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Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Metathesis of tobacco fatty acid methyl esters: Generation of industrially important platform chemicals  

Science Journals Connector (OSTI)

Abstract Self-methathesis of vegetable oil based unsaturated fatty acids provide a renewable and convenient route for the preparation of a number of platform chemicals useful for the production of polymers, biolubricants and other industrial products. The present study is focused on the use of the unsaturated non-edible oil methyl esters of tobacco (Nicotiana tabacum 82.2%) self- metathesis. Metathesis was carried out reacting equimolar quantities of fatty acid methyl esters (6.8†mm) with Grubbs second generation catalyst (0.3†mm) at 40Ė45†įC for 36†h. The metathesized products were characterized using GC and GCĖMS analysis. Self-metathesis of the tobacco methyl esters resulted in the formation of hydrocarbons, of which 9-octadecene (24%) and a cyclodecacyclododecene (19%) were found to be major. In addition 9-octadecenoic acid methyl ester (17%) and 9,12-octadecadienoic acid methyl esters (11%) were also observed. The study also discusses the molecules involved in the formation of the above intermediates which are useful for the preparation of a number of industrial products.

Yelchuri Vyshnavi; Rachapudi B.N. Prasad; Mallampalli S.L. Karuna

2013-01-01T23:59:59.000Z

2

Experimental investigations on diesel engine fuelled with methyl esters of cotton seed oil  

Science Journals Connector (OSTI)

In this investigation, cotton seed methyl ester (CSME) was prepared by transesterification using potassium hydroxide (KOH) as catalyst. The engine performance was analysed with different blends of biodiesel and was compared with neat diesel. It was concluded that the lower blends of biodiesel are closer to diesel as far as thermal efficiency is concerned. In the lower blends, the brakes specific fuel consumption is also comparatively reduced. The smoke density also increases for the blends of methyl ester of cotton seed oil diesel compared to neat diesel operation. The oxides of nitrogen (NOx) emission level are decreased with the blends of methyl ester of cotton seed oil compared to neat diesel. The results proved that the use of biodiesel (produced from cotton seed oil) in compression ignition engine is a viable alternative to diesel.

M. Saravanan; A. Anbarasu; M. Loganathan

2013-01-01T23:59:59.000Z

3

Combustion, performance and emission analysis of diesel engine fuelled with methyl esters of Pongamia oil  

Science Journals Connector (OSTI)

The methyl esters of vegetable oils, known as biodiesel are increasingly becoming popular because of their low environmental impact and potential as a green alternative fuel for diesel engine, and that they would not require significant modification of existing engine hardware. Methyl ester of Pongamia oil (PME) is derived through transesterification process. Experimental investigations have been carried out to examine properties, performance and emissions of different blends (B00, B20, B40, B60, B80 and B100) of PME comparison to diesel. A computer assisted single cylinder constant speed water cooled four stroke direct diesel engine (5 HP), which is commonly used in the agricultural sector for driving the pumps and small electrical generators is selected for the experimental investigation. The performance, emissions and combustion characteristics are analysed. The combustion parameters considered for this analysis are cylinder pressure and rate of heat release. The brake thermal efficiency is slightly reduced and hydrocarbon, carbon monoxide and smoke emissions in the exhaust are reduced when fuelled with methyl esters compared to diesel. But the NOx emissions are high when fuelled with methyl esters compared to diesel. [Received: December 11, 2009; Accepted: March 21, 2010

T. Hari Prasad; K. Hema Chandra Reddy; M. Muralidhara Rao

2010-01-01T23:59:59.000Z

4

Modelling Study of the Low-Temperature Oxidation of Large Methyl Esters J. Biet, V. Warth, O. Herbinet*  

E-Print Network [OSTI]

-decane / methyl palmitate mixture in a jet-stirred reactor. This paper also presents the construction and a comparison of models for methyl esters from C7 up to C17 in terms of conversion in a jet-stirred reactor, the development of renewable energy is more vital than ever [1,2]. The production of biofuels such as methyl

Paris-Sud XI, Université de

5

Chapter 22 - Whole Algal Biomass In situ Transesterification to Fatty Acid Methyl Esters as Biofuel Feedstocks  

Science Journals Connector (OSTI)

Abstract This chapter addresses the yield of lipids quantified as fatty acid methyl esters (FAME) by using different catalysts and catalyst combinations, and the acid catalyst hydrochloric acid providing a consistently high level of conversion to FAME. The discussion is accompanied by a link to the large-scale application of this process as a whole biomass conversion pathway. Microalgae-focused lipid technologies for biofuel applications, renewable and biodiesel fuel properties are described along with in situ transesterification of oleaginous algal biomass, choice of catalyst for in situ whole biomass transesterification, and the analytical characterization of lipid content in algal biomass using in situ transesterification.

Lieve M.L. Laurens

2015-01-01T23:59:59.000Z

6

Investigation on combustion characteristics of crude rice bran oil methyl ester blend as a heavy duty automotive engine fuel  

Science Journals Connector (OSTI)

In the present work, an attempt was made to test the suitability of crude rice bran oil methyl ester (CRBME) blend as a heavy duty automotive engine fuel. A four stroke, six cylinder direct injection 117.6 kW turbo-charged compression ignition (CI) engine was used for the work. The operation of the engine with CRBME blend showed that the peak pressure increased with lower maximum rate of pressure rise and maximum heat release rate with shorter delay period. Burning rate of the CRBME blend was slower and required a higher crank angle to complete the combustion cycle when compared to diesel. The brake thermal efficiency of the CRBME blend was lower than that of diesel at all speeds except at 2300rpm. As the measured combustion and performance parameters for CRBME blend differs only by a smaller magnitude when compared with diesel, this investigation ensures the suitability of the CRBME blend as fuel for heavy duty automotive engine without any design modifications [Received: August 12, 2010; Accepted: August 29, 2010

S. Saravanan; G. Nagarajan; S. Sampath

2011-01-01T23:59:59.000Z

7

Performance analysis and exhaust emissions of neem methyl ester operated compression ignition engine  

Science Journals Connector (OSTI)

Neem oil methyl ester (NOME) was prepared from neem oil using alkaline catalyzed transesterification. The important fuel properties of NOME 20% blend of NOME with diesel were compared with those of diesel. Optimum injection pressures were determined for neat diesel and NOME-20 blend. Comparison of brake specific fuel consumption (BSFC) brake thermal efficiency (BTE) exhaust gas temperature (EGT) and smoke density was done for diesel and NOME-20 blend at their respective optimum injection pressure. Higher BSFC a slight decrease in BTE and a sharp decrease in EGT and smoke density were recorded with NOME-20 blend. Emissions with NOME-20 blend were also compared with diesel emissions at their respective optimum injection pressures. Significant reductions in carbon monoxide hydrocarbon and oxides of nitrogen and increase in carbon-di-oxide were observed with NOME-20 blend. Hence neem biodiesel has an environmental importance over diesel and shows a promising future.

Vinod Singh Yadav; Kamal Kishore Khatri; Deepak Tanwar; Ajayta; Dilip Sharma; S. L. Soni

2013-01-01T23:59:59.000Z

8

Testing Waste Olive Oil Methyl Ester as a Fuel in a Diesel Engine  

Science Journals Connector (OSTI)

In this sense, to gain knowledge about the implications of its use, waste olive oil methyl ester was evaluated as a fuel for diesel engines during a 50-h short-term performance test in a diesel direct-injection Perkins engine. ... At the beginning of the last century, Rudolph Diesel fueled a diesel engine with the oil of an African groundnut (peanut), thus demonstrating the idea of using vegetable oil as a substitute for No. 2 diesel fuel. ... In this way, we obtained a volume value for each trio of working values, making a brake-specific fuel consumption comparison between different tests or fuels possible, as shown in Table 2, where Vi is the volume value for each test and V50 corresponds to that of No. 2 diesel fuel after 50 h (the test that showed the minimum value). ...

M. P. Dorado; E. Ballesteros; J. M. Arnal; J. Gůmez; F. J. Lůpez Gimťnez

2003-10-02T23:59:59.000Z

9

Performance and emissions of a diesel tractor engine fueled with marine diesel and soybean methyl ester  

Science Journals Connector (OSTI)

Biodiesel is an alternative fuel that is cleaner than petrodiesel. Biodiesel can be used directly as fuel for a diesel engine without having to modify the engine system. It has the major advantages of having high biodegradability, excellent lubricity and no sulfur content. This paper presents the results of investigations carried out in studying the fuel properties of soybean methyl ester (SME) and its blend with marine diesel fuel from 5%, 20% and 50% blends by volume and in running a diesel engine with these fuels. The results indicate that the use of biodiesel produces lower smoke opacity (up to 74%), but higher brake specific fuel consumption (BSFC) (up to 12%) compared to marine fuel (MF). The measured carbon monoxide (CO) emissions of B5 and B100 fuels were found to be 3% and 52% lower than that of the MF, respectively.

B. Gokalp; E. Buyukkaya; H.S. Soyhan

2011-01-01T23:59:59.000Z

10

Determination of Total Biodiesel Fatty Acid Methyl, Ethyl Esters, and Hydrocarbon Types in Diesel Fuels by Supercritical Fluid Chromatography-Flame Ionization Detection  

Science Journals Connector (OSTI)

......Determination of Total Biodiesel Fatty Acid Methyl...vortex mixer. This process produced solutions ranging...D5186 indicated that the biodiesel esters were not eluted...0%. For further evaluation, the quantitative analysis...determination of the biodiesel ester components by......

John W. Diehl; Frank P. DiSanzo

11

Emissions and engine performance from blends of soya and canola methyl esters with ARB {number_sign}2 diesel in a DCC 6V92TA MUI engine  

SciTech Connect (OSTI)

A Detroit Diesel 6V92TA MUI engine was operated on several blends of EPA No. 2 diesel, California ARB No. 2 diesel, soya methyl ester (SME) and canola methyl ester (CME). Various fuels and fuel blend characteristics were determined and engine emissions from these fuels and blends were compared. Increasing percentages of SME and CME blended with either ARB or EPA diesels led to increased emissions of NO{sub x}, CO{sub 2} and soluble particulate matter. Also noted were reductions in total hydrocarbons, CO and insoluble particulate matter. Chassis dynamometer tests conducted on a 20/80 SME/ARB blend showed similar emissions trends. The data suggest that certain methyl ester/No. 2 diesel blends in conjunction with delays in engine timing and technologies that reduce the soluble fraction of particulate emissions merit further exploration as emissions reducing fuel options for North American mass transits (except in California, which mandates ARB diesel).

Spataru, A.; Romig, C.

1995-12-31T23:59:59.000Z

12

Emissions and engine performance from blends of soya and canola methyl esters with ARB No. 2 diesel in a DDC 6V92TA MUI engine  

SciTech Connect (OSTI)

A Detroit Diesel 6V92TA MUI engine was operated on several blends of EPA No. 2 diesel, soya methyl ester (SME) and canola methyl ester (CME). Various fuels and fuel blend characteristics were determined and engine emissions from these fuels and blends were compared. Increasing percentages of SME and CME blended with either ARB or EPA diesels led to increased emissions of NO{sub x}, CO{sub 2} and soluble particulate matter. Also noted were reductions in total hydrocarbons, CO and insoluble particulate matter. Chassis dynamometer tests conducted on a 20/80 SME/ARB blend showed similar emission trends. The data suggest that certain methyl ester/No. 2 diesel blends in conjunction with technologies that reduce the soluble fraction of particulate emissions merit further exploration as emissions reducing fuel options for North American mass transit sectors (except California, which mandates ARB diesel).

Spataru, A.; Romig, C. [ADEPT Group, Inc., Los Angeles, CA (United States)

1995-11-01T23:59:59.000Z

13

E-Print Network 3.0 - anhydroecgonine methyl ester Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Idaho Collection: Environmental Sciences and Ecology 9 A Novel Post-translational Modification of Yeast Elongation Factor 1A Summary: that is released as volatile methyl groups...

14

Modeling study of the lowtemperature oxidation of large methyl esters from C11 to C19  

E-Print Network [OSTI]

in biodiesel fuels has been investigated. Models have been developed for these species and then detailed; Biodiesel fuels; Modeling; Oxidation * Corresponding author: Olivier Herbinet Laboratory of Reaction the differences with the combustion of alkanes induced by the ester function. While biodiesel fuels deriving from

Boyer, Edmond

15

Determination of Total Biodiesel Fatty Acid Methyl, Ethyl Esters, and Hydrocarbon Types in Diesel Fuels by Supercritical Fluid Chromatography-Flame Ionization Detection  

Science Journals Connector (OSTI)

......Research and Engineering, Paulsboro...determining total biodiesel methyl and...in diesel fuels by supercritical...mixture. Introduction The proposed use of biodiesel esters derived...as diesel fuel blending...of Total Biodiesel Fatty Acid...in Diesel Fuels by Supercritical...Research and Engineering, Paulsboro......

John W. Diehl; Frank P. DiSanzo

16

Combustion analysis of a direct injection diesel engine when fuelled with sunflower methyl ester and its diesel blends  

Science Journals Connector (OSTI)

Uncertainty in the availability of petroleum-based fuels in the near future and stringent pollution norms have triggered a search for renewable and clean-burning fuels. The use of vegetable oil as an alternative fuel has for long been in the pipeline, but its direct use has been limited because of its higher viscosity. In this work, sunflower oil was taken as feedstock and the feasibility of sunflower oil methyl ester (SFME) as an alternative fuel for diesel engines was investigated. Tests were conducted in a 4.4 kW, single cylinder, naturally aspirated direct injection diesel engine. It was observed that the premixed combustion phase of SFME and its blends were less intense compared with diesel oil. In addition, it was observed that SFME and its blends had slightly lower thermal efficiency and lower tailpipe emissions than diesel oil.

G. Lakshmi Narayana Rao; S. Saravanan; P. Selva Ilavarasi; G. Devasagayam

2009-01-01T23:59:59.000Z

17

The comparative analysis of diesel engine combustion and emission parameters fuelled with palm oil methyl esters and its diesel blends  

Science Journals Connector (OSTI)

In this work, the combustion and emission characteristics of a direct injection compression ignition engine fuelled with diesel-Palm Oil Methyl Ester (POME) blends are investigated. This study shows that the ignition delay decreases with increase in the POME addition. The maximum rate of pressure rise and maximum rate of heat release decreases with increase in POME addition at all loads. As the percentage of POME in the blend increases, the crank angle at which the maximum rate of heat release takes place advances. The brake thermal efficiency decreases with increase in POME addition. The unburned hydrocarbon, carbon monoxide and soot intensity decreases, while nitrogen oxides (NOx) increase with increase in POME addition. [Received: April 4, 2008; Accepted: November 24, 2008

G. Lakshmi Narayana Rao; S. Saravanan; P. Selva Ilavarasi

2009-01-01T23:59:59.000Z

18

Low Temperature Autoignition of C8H16O2 Ethyl and Methyl Esters in a Motored Engine  

Broader source: Energy.gov [DOE]

The alkyl chain of fatty acid esters experience the typical paraffin-like low temperature oxidation sequence; the alkyl chain length of fatty acid esters has a crucial impact on the ignition behavior of fatty acid esters

19

Characteristics of the performance and emissions of a HSDI diesel engine running with cottonseed oil or its methyl ester and their blends with diesel fuel  

Science Journals Connector (OSTI)

An experimental study has been conducted to evaluate the use of various blends of cottonseed oil or its methyl ester (bio-diesel) with diesel fuel, in blend ratios from 10/90 up to 100/0, in a fully instrumented, four-stroke, High Speed Direct Injection (HSDI), Ricardo/Cussons 'Hydra' diesel engine. The tests were conducted using each of the above fuel blends or neat fuels, with the engine working at a medium and a high load. Volumetric fuel consumption, exhaust smokiness and exhaust-regulated gas emissions such as nitrogen oxides, carbon monoxide and unburnt hydrocarbons were measured. The differences in the performance and exhaust emissions from the baseline operation of the engine, that is, when working with neat diesel fuel, were determined and compared, as well as the differences between cottonseed oil or its methyl ester and their blends. Theoretical aspects of diesel engine combustion were used to aid the correct interpretation of the engine behaviour.

Constantine D. Rakopoulos; Kimon A. Antonopoulos; Dimitrios C. Rakopoulos; Emmanuel C. Kakaras; Efthimios G. Pariotis

2007-01-01T23:59:59.000Z

20

A comparative evaluation of Al 2 O 3 coated low heat rejection diesel engine performance and emission characteristics using fuel as rice bran and pongamia methyl ester  

Science Journals Connector (OSTI)

In this study for the first time a nanoceramic Al 2 O 3 was used as a coatingmaterial in the low heat rejection engine concept. Experiments were conducted on single cylinder four stroke water cooled and direct injection diesel engine. First the engine was tested at different load conditions without coating. Then combustion chamber surfaces (cylinder head cylinder liner valves and piston crown face) were coated with nanoceramic material of Al 2 O 3 using plasma spray method. Comparative evaluation on performance and emission characteristics using fuel as rice bran methyl ester pongamia methyl ester and biodiesel/diesel fuel mixtures was studied in the ceramiccoated and uncoated engines under the same running conditions. An increase in engine power and a decrease in specific fuel consumption as well as significant improvements in exhaust gas emissions (except NOx) and smoke density were observed in the ceramiccoated engines compared with those of the uncoated engine.

M. Mohamed Musthafa; S. P. Sivapirakasam; M. Udayakumar

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Experimental Autoignition of C4-C6 Saturated and Unsaturated Methyl and Ethyl Esters H. Bennadji*, J. Biet, L. Coniglio-Jaubert, F. Billaud, P.A. Glaude, F. Battin-Leclerc  

E-Print Network [OSTI]

. Keywords: Biodiesel, Methyl esters, Ethyl esters, Shock tube, Reaction mechanism. 1. Introduction Biodiesel is an alternative fuel which can be used directly to a diesel engine without modifying the engine system. Basically separate infrastructure. The use of biodiesel in conventional diesel engines results in substantial

Boyer, Edmond

22

Evaluation of RME (rapeseed methyl ester) and mineral diesel fuels behaviour in quiescent vessel and EURO 5 engine  

Science Journals Connector (OSTI)

Abstract Alternative diesel fuels for internal combustion engines have grown significantly in interest in the last decade. This is due to the potential benefits in pollutant emissions and particulate matter reduction. Nevertheless at possible increase in nitrogen oxide (NOx), and almost certainly increase of fuel consumption have been observed. In this paper, mineral diesel and RME (rapeseed methyl ester) fuels have been characterized in a non-evaporative spray chamber and in an optically-accessible single-cylinder engine using a Common Rail injector (8 holes, 148į cone opening angle and 480†cc/30s@10†MPa flow number) to measure the spatial fuel distribution, the temporal evolution and the vaporizationĖcombustion processes. The injection process and mixture formation have been investigated at the Urban Driving Cycle ECE R15: 1500†rpm at 0.2†MPa of break mean effective pressure. Characteristic parameters of the spray like penetration length and liquid fuel distribution have been analysed and they have been correlated with the exhaust gaseous and particulate matter emissions. In the spray-analysis in non-evaporative conditions, short events (pilot) are mostly affected by asymmetries in the fuel distributions with noticeable standard deviations at low injected quantities. In the engine tests, the jets reached immediately the stabilization. A comparative analysis on the liquid phase of the spray, in non-evaporative and evaporative conditions, has permitted to investigate better the mixture formation. Its effect on pollutant emissions has been analysed for both fuels.

Luigi Allocca; Ezio Mancaruso; Alessandro Montanaro; Luigi Sequino; Bianca Maria Vaglieco

2014-01-01T23:59:59.000Z

23

An experimental study of gaseous exhaust emissions of diesel engine using blend of natural fatty acid methyl ester  

Science Journals Connector (OSTI)

Vegetable oil form in Natural Fatty Acid Methyl Ester (FAME) has their own advantages: first of all they are available everywhere in the world. Secondly, they are renewable as the vegetables which produce oil seeds can be planted year after year. Thirdly, they are friendly with our environment, as they seldom contain sulphur element in them. This makes vegetable fuel studies become current among the various popular investigations. This study is attempt to optimization of using blend FAME on diesel engine by experimental laboratory. The investigation experimental project is comparison between using blend FAME and base diesel fuel. The engine experiment is conducted with YANMAR TF120M single cylinder four stroke diesel engine set-up at variable engine speed with constant load. The data have been taken at each point of engine speed during the stabilized engine-operating regime. Measurement of emissions parameters at difference engine speed conditions have generally indicated lower in emission NOx, but slightly higher on CO2 emission. The result also shown that the blends FAME are good in fuel consumption and potentially good substitute fuels for diesel engine

Agung Sudrajad; Ismail Ali; Khalid Samo; Danny Faturachman

2012-01-01T23:59:59.000Z

24

Accurate and Reliable Quantification of Total Microalgal Fuel Potential as Fatty Acid Methyl Esters by in situ Transesterfication  

SciTech Connect (OSTI)

In the context of algal biofuels, lipids, or better aliphatic chains of the fatty acids, are perhaps the most important constituents of algal biomass. Accurate quantification of lipids and their respective fuel yield is crucial for comparison of algal strains and growth conditions and for process monitoring. As an alternative to traditional solvent-based lipid extraction procedures, we have developed a robust whole-biomass in situ transesterification procedure for quantification of algal lipids (as fatty acid methyl esters, FAMEs) that (a) can be carried out on a small scale (using 4-7 mg of biomass), (b) is applicable to a range of different species, (c) consists of a single-step reaction, (d) is robust over a range of different temperature and time combinations, and (e) tolerant to at least 50% water in the biomass. Unlike gravimetric lipid quantification, which can over- or underestimate the lipid content, whole biomass transesterification reflects the true potential fuel yield of algal biomass. We report here on the comparison of the yield of FAMEs by using different catalysts and catalyst combinations, with the acid catalyst HCl providing a consistently high level of conversion of fatty acids with a precision of 1.9% relative standard deviation. We investigate the influence of reaction time, temperature, and biomass water content on the measured FAME content and profile for 4 different samples of algae (replete and deplete Chlorella vulgaris, replete Phaeodactylum tricornutum, and replete Nannochloropsis sp.). We conclude by demonstrating a full mass balance closure of all fatty acids around a traditional lipid extraction process.

Laurens, L. M. L.; Quinn, M.; Van Wychen, S.; Templeton, D. W.; Wolfrum, E. J.

2012-04-01T23:59:59.000Z

25

Effect of palm methyl ester-diesel blends performance and emission of a single-cylinder direct-injection diesel engine  

Science Journals Connector (OSTI)

The purpose of this study is to investigate engine performance and exhaust emission when using several blends of neat palm oil methyl ester (POME) with conventional diesel (D2) in a small direct injection diesel engine and to compare the outcomes to that of the D2 fuel. Engine performances exhaust emissions and some other important parameters were observed as a function of engine load and speed. In addition the effect of modifying compression ratio was also carried out in this study. From the engine experimental work neat and blended fuels behaved comparably to diesel (D2) in terms of fuel consumption thermal efficiency and rate of heat released. Smoke density showed better results than that emitted by D2 operating under similar conditions due to the presence of inherited oxygen and lower sulphur content in the biofuel and its blends. The emissions of CO CO2 and HC were also lower using blended mixtures and in its neat form. However NOx concentrations were found to be slight higher for POME and its blends and this was largely due to higher viscosity of POME and possibly the presence of nitrogen in the palm methyl ester. General observation indicates that biofuel blends can be use without many difficulties in this type of engine but for optimized operation minor modifications to the engine and its auxiliaries are required.

Mazlan Said; Azhar Abdul Aziz

2012-01-01T23:59:59.000Z

26

In-cylinder pressure characteristics of a CI engine using blends of diesel fuel and methyl esters of beef tallow  

SciTech Connect (OSTI)

A Cummins N14-410 diesel engine was operated on 12 fuels produced by blending methyl tallowate, methyl soyate, and ethanol with no. 2 diesel fuel. Engine in-cylinder pressure data were used to evaluate engine performance. Peak cylinder pressures for each fuel blend at all engine speeds were lower than peak pressure for diesel fuel with the exception of the 80% diesel, 13% methyl tallowate, and 7% ethanol; and the 80% diesel, 6.5% methyl tallowate, 6.5% methyl soyate and 7% ethanol blends. The indicated mean effective pressure (IMEP) values for all fuel blends were less than for diesel fuel. The differences in IMEP values correlated with differences in power output of the engine. Similarly, maximum rates of pressure rise for most fuel blends were less than for diesel fuel. It was concluded that the fuel blends used in this study would have no detrimental long-term effects on engine performance, wear, and knock. 6 refs., 4 figs., 7 tabs.

Ali, Y.; Hanna, M.A.; Borg, J.E. [Univ. of Nebraska, Lincoln, NE (United States)

1996-05-01T23:59:59.000Z

27

A comparative study of Al2O3 coated LHR engine characteristic using rice bran and mahua methyl ester as a fuel  

Science Journals Connector (OSTI)

In this study, for the first time, a nano material of Al2O3 was used as ceramic layer in low heat rejection engine concepts. The coating was carried out by plasma spray method on the combustion chamber surfaces (cylinder head, cylinder liner, valves and crown surfaces) of the DI diesel engine. A comparative evaluation of Al2O3 coated engine was carried out between two types of biodiesel (methyl ester of rice bran and mahua oil) and diesel. Experiments were conducted on single cylinder, four strokes, water cooled and direct injection diesel engine. The test run was also repeated for uncoated engine and compared. The results indicated that, an increase in engine power (6.3-11.4%) and decrease in specific fuel consumption (0.8-10.9%), as well as significant improvements in exhaust gas emissions (except NOx) and smoke opacity (19.6-28.9%) were observed in Al2O3 coated engine compared with that of the uncoated engine.

M. Mohamed Musthafa; S.P. Sivapirakasam; M. Udayakumar

2012-01-01T23:59:59.000Z

28

Response surface methodology based prediction of engine performance and exhaust emissions of a diesel engine fuelled with canola oil methyl ester  

Science Journals Connector (OSTI)

The objective of this study was to investigate the effect of fuel injection timing and engine speed on engine performance and exhaust emission parameters using a diesel engine running on canola oil methyl ester (COME). COME was produced by means of the transesterification method and tested at full load with various engine speeds by changing fuel injection timing (12 15 and 18?įCA) in a turbocharged direct injection (TDI) diesel engine. The experiments were designed using response surface methodology (RSM) which is one of the well-known design of experiment technique for predicting the responses engine performance and exhaust emission parameters from a second order polynomial equation obtained by modeling the relation between fuel injection timing (t) and engine speed (n) parameters. By using the second order full quadratic RSM models obtained from experimental results responses brake power brake torque brake mean effective pressure brake specific fuel consumption brake thermal efficiency exhaust gas temperature oxygen (O2) oxides of nitrogen (NOx) carbon dioxide (CO2) carbon monoxide (CO) and light absorption coefficient (K) affected from factors t and n were able to be predicted by 95% confidence interval.

2013-01-01T23:59:59.000Z

29

Engine performance and emissions from the combustion of low-temperature Fischer‚??Tropsch synthetic diesel fuel and biodiesel rapeseed methyl ester blends  

Science Journals Connector (OSTI)

The combustion of oxygenated biodiesel (rapeseed methyl ester (RME)) improves the engine-out particulate matter, hydrocarbon and carbon monoxide (CO) emissions, while the low-temperature Fischer‚??Tropsch synthetic paraffinic diesel fuel improves engine-out NOx, CO, hydrocarbon and particulate matter emissions. Blending synthetic diesel (SD) fuel with oxygenated biodiesel could unlock potential performance synergies in the fuel properties (e.g. O2 content in RME and high cetane number of the synthetic fuels) of such blends and benefit engine performance and emissions. The combustion of synthetic diesel fuel/RME blend, named synthetic diesel B50, has shown similar combustion characteristics to diesel fuel, while simultaneous improvements in engine efficiency and smoke-NOx trade-off were achieved by taking advantage of the fuel's properties. The engine thermal efficiency was dependent on the fuel type, and followed the general trend: synthetic diesel > SDB50 > diesel > RME. Therefore, it has been shown that the design of a synthetic fuel with properties similar to the fuel blends presented in this work could improve engine-out NOx, smoke and hydrocarbon emissions and maintain or improve engine performance.

Kampanart Theinnoi; Athanasios Tsolakis; Sathaporn Chuepeng; Andrew P.E. York; Roger F. Cracknell; Richard H. Clark

2009-01-01T23:59:59.000Z

30

Graphene composite for improvement in the conversion efficiency of flexible poly 3-hexyl-thiophene:[6,6]-phenyl C{sub 71} butyric acid methyl ester polymer solar cells  

SciTech Connect (OSTI)

The solution of thin graphene-sheets obtained from a simple ultrasonic exfoliation process was found to chemically interact with [6,6]-phenyl C{sub 71} butyric acid methyl ester (PCBM) molecules. The thinner graphene-sheets have significantly altered the positions of highest occupied molecular orbital and lowest unoccupied molecular orbital of PCBM, which is beneficial for the enhancement of the open circuit voltage of the solar cells. Flexible bulk heterojunction solar cells fabricated using poly 3-hexylthiophene (P3HT):PCBM-graphene exhibited a power conversion efficiency of 2.51%, which is a ?2-fold increase as compared to those fabricated using P3HT:PCBM. Inclusion of graphene-sheets not only improved the open-circuit voltage but also enhanced the short-circuit current density owing to an improved electron transport.

Chauhan, A. K., E-mail: akchau@barc.gov.in, E-mail: akc.barc@gmail.com; Gusain, Abhay; Jha, P.; Koiry, S. P.; Saxena, Vibha; Veerender, P.; Aswal, D. K.; Gupta, S. K. [Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)

2014-03-31T23:59:59.000Z

31

A Detailed Chemical Kinetic Reaction Mechanism for Oxidation of Four Small Alkyl Esters in Laminar Premixed Flames  

SciTech Connect (OSTI)

A detailed chemical kinetic reaction mechanism has been developed for a group of four small alkyl ester fuels, consisting of methyl formate, methyl acetate, ethyl formate and ethyl acetate. This mechanism is validated by comparisons between computed results and recently measured intermediate species mole fractions in fuel-rich, low pressure, premixed laminar flames. The model development employs a principle of similarity of functional groups in constraining the H atom abstraction and unimolecular decomposition reactions in each of these fuels. As a result, the reaction mechanism and formalism for mechanism development are suitable for extension to larger oxygenated hydrocarbon fuels, together with an improved kinetic understanding of the structure and chemical kinetics of alkyl ester fuels that can be extended to biodiesel fuels. Variations in concentrations of intermediate species levels in these flames are traced to differences in the molecular structure of the fuel molecules.

Westbrook, C K; Pitz, W J; Westmoreland, P R; Dryer, F L; Chaos, M; Osswald, P; Kohse-Hoinghaus, K; Cool, T A; Wang, J; Yang, B; Hansen, N; Kasper, T

2008-02-08T23:59:59.000Z

32

Esters of propane-1,3-diboric and propane-1,3-dithioboric acids  

Science Journals Connector (OSTI)

The polymer formed by hydroborating boron-trialkyl reacts with methyl borate, giving the tetramethyl ester of propane-1,3-diboric acid.

B. M. Mikhailov; V. F. Pozdnev

1962-10-01T23:59:59.000Z

33

Detailed Chemical Kinetic Reaction Mechanism for Biodiesel Components Methyl Stearate and Methyl Oleate  

SciTech Connect (OSTI)

New chemical kinetic reaction mechanisms are developed for two of the five major components of biodiesel fuel, methyl stearate and methyl oleate. The mechanisms are produced using existing reaction classes and rules for reaction rates, with additional reaction classes to describe other reactions unique to methyl ester species. Mechanism capabilities were examined by computing fuel/air autoignition delay times and comparing the results with more conventional hydrocarbon fuels for which experimental results are available. Additional comparisons were carried out with measured results taken from jet-stirred reactor experiments for rapeseed methyl ester fuels. In both sets of computational tests, methyl oleate was found to be slightly less reactive than methyl stearate, and an explanation of this observation is made showing that the double bond in methyl oleate inhibits certain low temperature chain branching reaction pathways important in methyl stearate. The resulting detailed chemical kinetic reaction mechanism includes more approximately 3500 chemical species and more than 17,000 chemical reactions.

Naik, C; Westbrook, C K; Herbinet, O; Pitz, W J; Mehl, M

2010-01-22T23:59:59.000Z

34

Syntheses of 11 F-labeled carboxylic esters within a  

E-Print Network [OSTI]

and with reduced infusion rate. Radioactive methyl ester 4b was obtained from the reaction of 1 (10 mM) with 2b in 56% decay-corrected radiochemical yield (RCY) at an infusion rate of 10 mL min21 , and when the infusion rate was reduced to 1 mL min21 , the RCY increased to 88%. The synthesis of the non

Shen, Jun

35

Method of making alkyl esters  

DOE Patents [OSTI]

Methods of making alkyl esters are described herein. The methods are capable of using raw, unprocessed, low-cost feedstocks and waste grease. Generally, the method involves converting a glyceride source to a fatty acid composition and esterifying the fatty acid composition to make alkyl esters. In an embodiment, a method of making alkyl esters comprises providing a glyceride source. The method further comprises converting the glyceride source to a fatty acid composition comprising free fatty acids and less than about 1% glyceride by mass. Moreover, the method comprises esterifying the fatty acid composition in the presence of a solid acid catalyst at a temperature ranging firm about 70.degree. C. to about 120.degree. C. to produce alkyl esters, such that at least 85% of the free fatty acids are converted to alkyl esters. The method also incorporates the use of packed bed reactors for glyceride conversion and/or fatty acid esterification to make alkyl esters.

Elliott, Brian (Wheat Ridge, CO)

2010-09-14T23:59:59.000Z

36

Experimental Investigations of an IC Engine Operating with Alkyl Esters of Jatropha, Karanja and Castor Seed Oil  

Science Journals Connector (OSTI)

Abstract Diesel engines are efficient systems popularly used to meet electricity and other power requirements for agriculture, industry, transportation and decentralized power generation. Vegetable oils can be successfully used in Compression Ignition (CI) engine either through engine modifications or fuel modifications, later being more feasible option. Fuel modification options include blending of vegetable oils with mineral diesel, transesterification, cracking/pyrolysis, micro-emulsion, and hydrogenation to reduce polymerization and viscosity, transesterification of vegetable oil with a short chain alcohol i.e. methanol or ethanol being most popular. Several non-edible plant oils have been found to be promising crude oils for the production of biodiesel. Methanol is most commonly used in commercial production of biodiesel. Fatty acid alkyl esters (FAAE) produced from higher alcohols is of interest as they may have different fuel properties in comparison to methyl or ethyl esters. In the present investigations, preparation of methanol, ethanol, propanol and butanol were used for formation of alkyl esters of Jatropha, Karanja and Castor. The composition of Jatropha, Karanja and Castor oil were analysed and alcoholysis process for preparing alkyl esters of Jatropha, Karanja and Castor oil with various alcohols was optimised. Alkyl ester-diesel blends were used to test the diesel engine at different load conditions and extensive performance and emissions studies were conducted in single cylinder direct injection compression ignition engines. It is concluded that lower blends of ethyl, propyl and butyl esters of Jatropha and Karanja feedstock have physico-chemical properties similar to methyl esters. However, deviation from the properties became larger for higher blending ratio. Therefore, in order to get engine performance in close range of diesel, the optimum blending ratio of higher alkyl esters need to be even less than methyl esters. Lower blends of higher alkyl esters are expected to give engine characteristics in close proximity to diesel overcoming the limitations of bio-diesel, while retaining the advantages.

Sanjay Bajpai; Lalit Mohan Das

2014-01-01T23:59:59.000Z

37

Performance and emission characteristics of a diesel engine using esters of palm olein/soybean oil blends  

Science Journals Connector (OSTI)

In this experimental study, the engine performance and exhaust emissions of a diesel direct injection engine using mixed palm olein‚??soybean vegetable oil ethyl ester (POSEE) and methyl ester (POSME) have been examined. The results of experimental studies have shown that the torque and brake power output of an engine, which uses biodiesels, is slightly lower and specific fuel consumption is higher than in an engine using conventional diesel fuel. It has also been observed that there is a decrease in both carbon monoxide and hydrocarbon (HC) emissions, which indicates an advantage of exhaust emissions. Although methyl ester's CO2 emissions decreased compared with those of diesel fuel, NO and NOX emissions were higher with the biodiesels.

Imdat Taymaz; Mucahit Sengil

2010-01-01T23:59:59.000Z

38

Method of making a cyanate ester foam  

DOE Patents [OSTI]

A cyanate ester resin mixture with at least one cyanate ester resin, an isocyanate foaming resin, other co-curatives such as polyol or epoxy compounds, a surfactant, and a catalyst/water can react to form a foaming resin that can be cured at a temperature greater than 50.degree. C. to form a cyanate ester foam. The cyanate ester foam can be heated to a temperature greater than 400.degree. C. in a non-oxidative atmosphere to provide a carbonaceous char foam.

Celina, Mathias C.; Giron, Nicholas Henry

2014-08-05T23:59:59.000Z

39

Rheology of silicon carbide/vinyl ester nanocomposites  

E-Print Network [OSTI]

New York, 1999. SILICON CARBIDE/VINYL ESTER NANOCOMPOSITESRheology of Silicon Carbide/Vinyl Ester NanocompositesABSTRACT: Silicon carbide (SiC) nanoparticles with no

Yong, Virginia; Hahn, H. Thomas

2006-01-01T23:59:59.000Z

40

Experimental and modeling study of the thermal decomposition of methyl decanoate  

E-Print Network [OSTI]

in internal combustion engines [2], [3], [4], [5] and [6]. Biodiesel fuels are composed of methyl esters) 1288-1300" DOI : 10.1016/j.combustflame.2010.11.009 #12;1. Introduction Fuel thermal decomposition are of importance in some practical cases such as diesel engines. The first reactions of diesel fuels

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Identification of process suitable diluent  

SciTech Connect (OSTI)

The Sigma Team for Minor Actinide Separation (STMAS) was formed within the USDOE Fuel Cycle Research and Development (FCRD) program in order to develop more efficient methods for the separation of americium and other minor actinides (MA) from used nuclear fuel. The development of processes for MA separations is driven by the potential benefits; reduced long-term radiotoxicty of waste placed in a geologic repository, reduced timeframe of waste storage, reduced repository heat load, the possibility of increased repository capacity, and increased utilization of energy potential of used nuclear fuel. The research conducted within the STMAS framework is focused upon the realization of significant simplifications to aqueous recycle processes proposed for MA separations. This report describes the research efforts focused upon the identification of a process suitable diluent for a flowsheet concept for the separation of MA which is based upon the dithiophosphinic acid (DPAH) extractants previously developed at the Idaho National Laboratory (INL).

Dean R. Peterman

2014-01-01T23:59:59.000Z

42

Synthesis of a new energetic nitrate ester  

SciTech Connect (OSTI)

Nitrate esters have been known as useful energetic materials since the discovery of nitroglycerin by Ascanio Sobrero in 1846. The development of methods to increase the safety and utility of nitroglycerin by Alfred Nobel led to the revolutionary improvement in the utility of nitroglycerin in explosive applications in the form of dynamite. Since then, many nitrate esters have been prepared and incorporated into military applications such as double-based propellants, detonators and as energetic plasticizers. Nitrate esters have also been shown to have vasodilatory effects in humans and thus have been studied and used for treatments of ailments such as angina. The mechanism of the biological response towards nitrate esters has been elucidated recently. Interestingly, many of the nitrate esters used for military purposes are liquids (ethylene glycol dinitrate, propylene glycol dinitrate, etc). Pentaerythritol tetranitrate (PETN) is one of the only solid nitrate esters, besides nitrocellulose, that is used in any application. Unfortunately, PETN melting point is above 100 {sup o}C, and thus must be pressed as a solid for detonator applications. A more practical material would be a melt-castable explosive, for potential simplification of manufacturing processes. Herein we describe the synthesis of a new energetic nitrate ester (1) that is a solid at ambient temperatures, has a melting point of 85-86 {sup o}C and has the highest density of any known nitrate ester composed only of carbon, hydrogen, nitrogen and oxygen. We also describe the chemical, thermal and sensitivity properties of 1 as well as some preliminary explosive performance data.

Chavez, David E [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

43

Host cells and methods for producing 3-methyl-2-buten-1-ol, 3-methyl-3-buten-1-ol, and 3-methyl-butan-1-ol  

DOE Patents [OSTI]

The invention provides for a method for producing a 5-carbon alcohol in a genetically modified host cell. In one embodiment, the method comprises culturing a genetically modified host cell which expresses a first enzyme capable of catalyzing the dephosphorylation of an isopentenyl pyrophosphate (IPP) or dimethylallyl diphosphate (DMAPP), such as a Bacillus subtilis phosphatase (YhfR), under a suitable condition so that 5-carbon alcohol is 3-methyl-2-buten-1-ol and/or 3-methyl-3-buten-1-ol is produced. Optionally, the host cell may further comprise a second enzyme capable of reducing a 3-methyl-2-buten-1-ol to 3-methyl-butan-1-ol, such as a reductase.

Chou, Howard H. (Berkeley, CA); Keasling, Jay D. (Berkeley, CA)

2011-07-26T23:59:59.000Z

44

Ester, Alaska: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Ester, Alaska: Energy Resources Ester, Alaska: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 64.8472222¬į, -148.0144444¬į Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":64.8472222,"lon":-148.0144444,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

45

Unconventional Air-Stable Interdigitated Bilayer Formed by 2,3-Disubstituted Fatty Acid Methyl Esters  

Science Journals Connector (OSTI)

The diffusion-limited aggregation (DLA) model is applied to describe the formation of the fractal structures of the bilayer as observed in the second plateau. ... For the fluorescence microscopy investigations, the film balance (144 cm2, Riegler & Kirstein) was mounted onto the stage of the Olympus microscope BX-FLA (Hamburg, Germany) equipped with a mercury lamp (USH-102D 100 W, power supply unit BH2-RFL-T3), an objective (LMPLFL 50◊), and a CCD camera with a camera controller (Hamamatsu C4742-95, Hamamatsu, Japan). ...

Xiaodong Chen; Susanne Wiehle; Markus Weygand; Gerald Brezesinski; Ute Klenz; Hans-Joachim Galla; Harald Fuchs; GŁnter Haufe; Lifeng Chi

2005-10-05T23:59:59.000Z

46

Effect of Unburned Methyl Esters on the NOx Conversion of Fe-Zeolite SCR Catalyst  

SciTech Connect (OSTI)

Engine and flow reactor experiments were conducted to determine the impact of biodiesel relative to ultra-low-sulfur diesel (ULSD) on inhibition of the selective catalytic reduction (SCR) reaction over an Fe-zeolite catalyst. Fe-zeolite SCR catalysts have the ability to adsorb and store unburned hydrocarbons (HC) at temperatures below 300 C. These stored HCs inhibit or block NO{sub x}-ammonia reaction sites at low temperatures. Although biodiesel is not a hydrocarbon, similar effects are anticipated for unburned biodiesel and its organic combustion products. Flow reactor experiments indicate that in the absence of exposure to HC or B100, NO{sub x} conversion begins at between 100 and 200 C. When exposure to unburned fuel occurs at higher temperatures (250-400 C), the catalyst is able to adsorb a greater mass of biodiesel than of ULSD. Experiments show that when the catalyst is masked with ULSD, NO{sub x} conversion is inhibited until it is heated to 400 C. However, when masked with biodiesel, NO{sub x} conversion is observed to begin at temperatures as low as 200 C. Engine test results also show low-temperature recovery from HC storage. Engine tests indicate that, overall, the SCR system has a faster recovery from HC masking with biodiesel. This is at least partially due to a reduction in exhaust HCs, and thus total HC exposure with biodiesel.

Williams, A.; Ratcliff, M.; Pedersen, D.; McCormick, R.; Cavataio, G.; Ura, J.

2010-03-01T23:59:59.000Z

47

Transesterification of rubber seed oil by sonication technique for the production of methyl esters  

Science Journals Connector (OSTI)

The research and development activities in several countries on this subject have been mostly on sunflower, safflor, soybean, rapeseed and peanut among others; most of these being edible in Indian context. Thus, ...

S. Nivetha Ragavan; D. Vetha Roy

2011-07-01T23:59:59.000Z

48

Low Temperature Autoignition of C8H16O2 Ethyl and Methyl Esters...  

Broader source: Energy.gov (indexed) [DOE]

500 600 700 800 900 1000 300 320 340 360 380 400 420 Apparent Heat Release Rate (kJDeg) Bulk Cylinder Gas Temperature (K) CA (Deg) -0.01 0.01 0.03 0.05 0.07 0.09 0.11 50 250 450...

49

Usage of Fuel Mixtures Containing Ethanol and Rapeseed Oil Methyl Esters in a Diesel Engine  

Science Journals Connector (OSTI)

However, its use in the diesel engine cycle is hampered by the poor motor-fueling characteristics of lower alcohols and, primarily, the limited solubility of ethanol in fossil diesel fuel and its low self-ignition characteristics. ... Coefficient ? = Gair/(GfL0) estimates air supply into a diesel engine cylinder (indicator process), taking into account the differences of stoichiometric ratio L0 of the tested fuels, caused by the increase of the E portion in the RME?E mixture (Gair is air consumption, and Gf is fuel consumption). ... Future research will concentrate on the analysis of fuel injection and heat release rate characteristics in a cylinder, while a diesel engine is running on biodiesel fuels RME?E, and also on the operational parameters of diesel engines when fossil diesel fuel is replaced with three-component fuels D?RME?E. ...

Sergejus Lebedevas; Galina Lebedeva; Violeta Makareviciene; Prutenis Janulis; Egle Sendzikiene

2008-11-12T23:59:59.000Z

50

Experimental and Computational Thermochemical Study of 2-and 3-Thiopheneacetic Acid Methyl Esters  

E-Print Network [OSTI]

, biodiagnostics, electronic and optoelectronic devices, and conductive polymers. The present study reports found widespread use in modern drug design,3 biodiagnostics,4 electronic and optoelectronic devices,5

Chickos, James S.

51

Beyond Fatty Acid Methyl Esters: Expanding the Renewable Carbon Profile with Alkenones from Isochrysis sp.  

Science Journals Connector (OSTI)

∂ Department of Botany, Faculty of Science, Alexandria University, Alexandria 21526, Egypt ... (a) Mata, T. M.; Martins, A. A.; Caetano, N. S. Renewable Sustainable Energy Rev. 2010, 14, 217Ė 232 ...

Gregory W. OíNeil; Catherine A. Carmichael; Tyler J. Goepfert; James M. Fulton; Gerhard Knothe; Connie Pui Ling Lau; Scott R. Lindell; Nagwa G-E. Mohammady; Benjamin A. S. Van Mooy; Christopher M. Reddy

2012-03-12T23:59:59.000Z

52

Combustion chemical kinetics of biodiesel and related compounds (methyl and ethyl esters): Experiments and  

E-Print Network [OSTI]

energy resource that has been consumed by the world's population, exceeding natural gas, coal, nuclear a shift toward alternative sources of energy that are renewable, sustainable, efficient, cost Industries Chimiques de Nancy, Laboratoire Réactions et Génie des Procédés, UMR CNRS 7274, 1 rue Grandville

Paris-Sud XI, Université de

53

4, 11371165, 2007 Suitability QCL for  

E-Print Network [OSTI]

BGD 4, 1137­1165, 2007 Suitability QCL for eddy covariance P. S. Kroon et al. Title Page Abstract Centre of the Netherlands (ECN), Department of Air Quality and Climate Change, Netherlands 2 TU Delft, Department of Multi-Scale Physics, Research group Clouds, Climate and Air Quality, Netherlands 3 Aerodyne

Boyer, Edmond

54

Preparation of {alpha},{beta}-unsaturated carboxylic acids and esters  

DOE Patents [OSTI]

Disclosed is a process for the preparation of {alpha},{beta}-unsaturated carboxylic acids and esters thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic acid, ester or anhydride in the presence of a catalyst comprising an oxide of niobium.

Gogate, M.R.; Spivey, J.J.; Zoeller, J.R.

1998-09-15T23:59:59.000Z

55

E-Print Network 3.0 - activated ester self-assembled Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ester) Summary: behavior of DNA with the polymer to form self-assembled PHP esterDNA complexes was characterized... 3 and 4). Condensation of Polyanion by...

56

E-Print Network 3.0 - acid esters evaluated Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Abstract... This paper describes an exploratory study on the synthesis of fatty acidpotato starch esters using... : potato starch, fatty acid starch esters, starch laurate, ......

57

Experimental and Kinetic Modeling Study of Extinction and Ignition of Methyl Decanoate in Laminar Nonpremixed Flows  

SciTech Connect (OSTI)

Methyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate is investigated in nonpremixed, nonuniform flows. Experiments are performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream is measured as a function of the strain rate at extinction, and critical conditions of ignition are measured in terms of the temperature of the oxidizer stream as a function of the strain rate. It is not possible to use a fully detailed mechanism for methyl decanoate to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources. Therefore a skeletal mechanism was deduced from a detailed mechanism of 8555 elementary reactions and 3036 species using 'directed relation graph' method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of ignition were calculated using this skeletal mechanism and are found to agree well with experimental data. The predicted strain rate at extinction is found to be lower than the measurements. In general, the methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.

Seshadri, K; Lu, T; Herbinet, O; Humer, S; Niemann, U; Pitz, W J; Law, C K

2008-01-09T23:59:59.000Z

58

Project Profile: Deep Eutectic Salt Formulations Suitable as...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids Project Profile: Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids Halotechnics...

59

Synthesis and Decarboxylative Coupling of Sulfonyl Acetic Esters  

E-Print Network [OSTI]

The synthesis and palladium-catalyzed decarboxylative allylation (DCA) of ?-sulfonyl allyl esters is the central focus of this dissertation. Specifically we describe the development of the racemic reaction in which the scope and mechanism...

Weaver, Jimmie Dean

2010-04-28T23:59:59.000Z

60

Controlling DNA Methylation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Controlling DNA Methylation Though life on earth is composed of a diverse range of organisms, some with many different types of tissues and cells, all these are encoded by a molecule we call DNA. The information required to build a protein is stored in DNA within the cells. Not all the message in the DNA is used in each cell and not all the message is used all the time. During cell differentiation, the cells become dedicated for their specific function which involves selectively activating some genes and repressing others. Gene regulation is an important event in the developmental biology and the biology of various diseases, but a more complex process. Controlling DNA Methylation Though life on earth is composed of a diverse range of organisms, some with many different types of tissues and cells, all these are encoded by a molecule we call DNA. The information required to build a protein is stored in DNA within the cells. Not all the message in the DNA is used in each cell and not all the message is used all the time. During cell differentiation, the cells become dedicated for their specific function which involves selectively activating some genes and repressing others. Gene regulation is an important event in the developmental biology and the biology of various diseases, but a more complex process. In the bacteria there are distinct enzymes while one is capable of cleaving DNA, the other protects DNA by modification. The complementary function provided by the set of enzymes offers a defense mechanism against the phage infection and DNA invasion. The incoming DNA is cleaved sequence specifically by the class of enzymes called restriction endonuclease (REase). The host DNA is protected by the sequence specific action of matching set of enzymes called the DNA methyltransferase (MTase). The control of the relative activities of the REase and MTase is critical because a reduced ratio of MTase/REase activity would lead to cell death via autorestriction. However too high a ratio would fail to provide protection against invading viral DNA. In addition a separate group of proteins capable of controlling R-M proteins have been identified in various restriction-modification (R-M) systems which are called C proteins (Roberts et al., 2003).

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment  

E-Print Network [OSTI]

SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment of Dalhousie University.................................................................................................. 2 2.2 Solar Radiation Data for Calculating Solar Energy Resource .................... 3 3 Campus.1 Evaluation of Suitability for Solar Energy Generation................................ 12 4.2 Solar

Brownstone, Rob

62

Low-temperature emission spectra of 9-alkylanthracene esters: Dimer photodecomposition and monomer pair interactions in polymer hosts  

SciTech Connect (OSTI)

Effects due to variation in the alkyl chain length of photodimers of 9-alkylanthracene esters on their photodecomposition efficiencies at 12 K and, by implication, the photoproduct migration as a function of temperature within polymer hosts are investigated. It is shown that dimers with longer alkyl chains have a lower photodecomposition efficiency. The extent of photoproduct migration within the polymer following photodecomposition was also studied as a function of alkyl chain length. This migration and its modulation of the interaction between the separating monomers is shown to affect the emission spectrum. Thus, monomer migration was studied in temperature cycling experiments. It was also found, for the polymer hosts investigated - poly(methyl methacrylate), poly(vinyl chloride), and polystyrene - that these properties are host dependent. This result is probably due to the void space differences that exist among these polymers. 17 refs., 10 figs.

Salt, K.; Scott, G.W. (Univ. of California, Riverside, CA (United States))

1994-10-06T23:59:59.000Z

63

Agronomic Suitability of Bioenergy Crops in Mississippi  

SciTech Connect (OSTI)

In Mississippi, some questions need to be answered about bioenergy crops: how much suitable land is available? How much material can that land produce? Which production systems work best in which scenarios? What levels of inputs will be required for productivity and longterm sustainability? How will the crops reach the market? What kinds of infrastructure will be necessary to make that happen? This publication helps answer these questions: √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę Which areas in the state are best for bioenergy crop production? √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę How much could these areas produce sustainably? √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę How can bioenergy crops impact carbon sequestration and carbon credits? √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę How will these crops affect fertilizer use and water quality? √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬

Lemus, Rocky; Baldwin, Brian; Lang, David

2011-10-01T23:59:59.000Z

64

Biosynthesis and urinary excretion of methyl sulfonium derivatives of the sulfur mustard analog, 2-chloroethyl ethyl sulfide, and other thioethers  

SciTech Connect (OSTI)

Thioether methyltransferase was previously shown to catalyze the S-adenosylmethionine-dependent methylation of diemthyl selenide, dimethyl telluride, and various thioethers to produce the corresponding methyl onium ions. In this paper we show that the following thioethers are also substrates for this enzyme in vitro: 2-hydroxyethyl ethyl sulfide, 2-chloroethyl ethyl sulfide, thiodiglycol, t-butyl sulfide, and isopropyl sulfide. To demonstrate thioether methylation in vivo, mice were injected with (methyl-{sup 3}H)methionine plus different thioethers, and extracts of lungs, livers, kidneys, and urine were analyzed by high-performance liquid chromatography for the presence of ({sup 3}H)methyl sulfonium ions. The following thioethers were tested, and all were found to be methylated in vivo: dimethyl sulfide, diethyl sulfide, methyl n-propyl sulfide, tetrahydrothiophene, 2-(methylthio)ethylamine, 2-hydroxyethyl ethyl sulfide, and 2-chloroethyl ethyl sulfide. This supports our hypothesis that the physiological role of thioether methyltransferase is to methylate seleno-, telluro-, and thioethers to more water-soluble onium ions suitable for urinary excretion. Conversion of the mustard gas analog, 2-chloroethyl ethyl sulfide, to the methyl sulfonium derivative represents a newly discovered mechanism for biochemical detoxification of sulfur mustards, as this conversion blocks formation of the reactive episulfonium ion that is the ultimate alkylating agent for this class of compounds.

Mozier, N.M.; Hoffman, J.L. (Univ. of Louisville, KY (USA))

1990-12-01T23:59:59.000Z

65

E-Print Network 3.0 - acid mono-2-ethylhexyl ester Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

B. Magnetic properties a b s t r a c t FeVinyl ester... surfactant or coupling agent. Vinyl ester monomer serves as a coupling agent with one side covalently bound Source: Guo,...

66

E-Print Network 3.0 - acid dimethyl ester Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Properties of Higher Fatty Esters of Corn Starch Summary: fatty esters (C8C18) of potato starch and corn amylose using fatty acid chlorides and pyridine... exploratory...

67

E-Print Network 3.0 - acid esters inhibit Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Surfaces Summary: for catalysis or inhibition however. Recent studies with agrochemicals possessing carboxylic acid ester... . Keywords: Naptalam; amide hydrolysis; metal...

68

Aerogels and Polymorphism of Isotactic Poly(4-methyl-pentene-1)  

Science Journals Connector (OSTI)

Aerogels and Polymorphism of Isotactic Poly(4-methyl-pentene-1) ... Monolithic and highly crystalline aerogels of isotactic poly(4-methyl-pentene-1) (i-P4MP1) have been prepared by sudden solvent extraction with supercritical carbon dioxide from thermoreversible gels. ... Gels with cocrystalline phases lead to aerogels exhibiting the denser crystalline form II, whereas all the other considered gels lead to aerogels exhibiting the thermodynamically stable form I. Aerogels obtained from form I gels, which do not undergo a crystalline phase transition during the CO2 extraction process present the high structural stability most suitable for the preparation of porous membranes. ...

Christophe Daniel; Jenny G. Vitillo; Gianluca Fasano; Gaetano Guerra

2011-03-10T23:59:59.000Z

69

Recommendation by the Secretary of Energy Regarding the Suitability...  

Broader source: Energy.gov (indexed) [DOE]

Recommendation by the Secretary of Energy Regarding the Suitability of the Yucca Mountain Site for a Repository Under the Nuclear Waste Policy Act of 1982 Recommendation by the...

70

Suitability, Position Sensitivity Designations, and Related Personnel Matters  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order identifies the interrelationships among suitability, security and access authorizations; to establish guidance and policy regarding position sensitivity designations, certain background investigations, and suitability determinations; and to establish the policies and procedures regarding waivers of pre-employment investigations. Chg 1, dated 7-8-92.

1989-12-19T23:59:59.000Z

71

Phosphate ester inhibitors solve naphthenic acid corrosion problems  

SciTech Connect (OSTI)

Crude oils containing naphthenic acids can cause a variety of corrosion problems in any of several process areas. But because of the complexity of naphthenic acid corrosion, no routine technique is available for predicting corrosion from this source. Certain high-temperature corrosion inhibitors with a general phosphate ester structure have shown good mitigation of naphthenic acid corrosion in commercial applications. A description of two such cases will help refiners know what to look for to prevent similar occurrences in their plants.

Babaian-Kibala, E. (Nalco Chemical Co., Sugar Land, TX (United States))

1994-02-28T23:59:59.000Z

72

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels  

Science Journals Connector (OSTI)

Catalytic Hydrothermal Conversion of Triglycerides to Non-ester Biofuels ... Results derived from soybean oil, jatropha oil, and tung oil show that certain biofuel fractions met JP-8 specifications and Navy distillate specifications. ... Therefore, tung-oil-derived CH biofuel will have added value as a blend stock for existing FT jet fuels and emerging biofuels such as those produced from the UOP/ENI EcofiningTM process to meet fuel specifications by increasing density and aromatic content. ...

Lixiong Li; Edward Coppola; Jeffrey Rine; Jonathan L. Miller; Devin Walker

2010-01-13T23:59:59.000Z

73

Adsorption studies of phthalic acid esters in aqueous solutions  

E-Print Network [OSTI]

they are produced in large quantities and are frequently found in environmental samples. Montmorillonite, kaolinite, Ca-montmorillonite, calcite, and a sediment sample were used as representative marine particulates. Both phthalic acid esters were adsorbed onto... and desorbed from the solid adsorbents and the glass test tubes used in the adsorption experiments . A study of the kinetics of phthal ate adsorption showed that equilibrium was attained after 12 hours. At equilibrium, the amount of phthalate bound to a...

Sullivan, Kevin Francis

2012-06-07T23:59:59.000Z

74

Properties and Performance of Levulinate Esters as Diesel Blend Components  

Science Journals Connector (OSTI)

The esters were treated with the cetane-enhancing compound 2-ethyl hexyl nitrate and were tested as blends with diesel fuel in a 2008 model year Cummins ISB engine with the measurement of regulated pollutant emissions over the federal heavy duty diesel transient cycle. ... The various approaches to biomass conversion can be divided into two general types: thermochemical (gasification, pyrolysis, acid hydrolysis, combustion, and liquefaction) and biochemical (fermentation, enzymatic hydrolysis, and anaerobic and aerobic digestion). ...

Earl Christensen; Aaron Williams; Stephen Paul; Steve Burton; Robert L. McCormick

2011-10-05T23:59:59.000Z

75

Sorption of Phthalate Esters and PCBs in a Marine Ecosystem  

E-Print Network [OSTI]

Sorption of Phthalate Esters and PCBs in a Marine Ecosystem C H E R Y L E . M A C K I N T O S H to particulate matter in aquatic environments. Sorption plays a key role in controlling the long-term fate of the sorption of many commercial DPEs do not exist. To characterize the sorptive nature of DPEs in a real

Gobas, Frank

76

Combustion and emission characteristics of diesel engine fuelled with methyl esters of pungam oil and rice bran oil  

Science Journals Connector (OSTI)

Biodiesel derived from vegetable oils and animal fats can be used in diesel engines with little or no modifications. In this work, the combustion, performance and emission characteristics of various biodiesel (rice bran oil and pungam oil) and their blends are evaluated in a direct injection diesel engine. Lower ignition delay, higher peak pressure and heat release rate with almost same brake thermal efficiency are obtained for 20% biodiesel blend as compared with diesel fuel. They exhibited lower unburned hydrocarbon, carbon monoxide and soot emissions with a penalty of higher NOx emissions.

G. Lakshmi Narayana Rao; N. Nallusamy; S. Sampath; K. Rajagopal

2008-01-01T23:59:59.000Z

77

A determination of the heats of combustion of the five-carbon fatty acids and their methyl and ethyl esters  

E-Print Network [OSTI]

'srr Ins~ Ce?c ~c Dl? 30? Tbe bstwLs sodAL 1Need wss ohtwixlsd frccc ths Q?S? Wool? Bar? of ghsnclalPds? Tbs hest ef ~tdocc wss giwRl se g6?QQ shs? kja/g? cocos (weighed in wceccs) er QLg eaL/g? essa (in @sees)? 3 oslorie? 0?wg$840 sbs, +? 'ei ~ r...LLd bs ~aied fer tbs fi~carhc?L aCCLds?ad the baste of vaoorisat4os of tbs ether Lsaee4e ac@de ae4hsated a4 their ~g, xdn4s The bs?te of vsyorhwQ. oe o' ths sands a4 2~ C? wars estiaated ly a?S~ 4R? k", ~? ~4lcsi55, ccsd '~ ~ . -? AIL' %7? Q? ~ +sad...

Gilby, Ralph F

2012-06-07T23:59:59.000Z

78

Suitability of Non-Energy Greenhouse Gases for Emissions Trading  

Science Journals Connector (OSTI)

This paper assesses the suitability of different sources of non-energy greenhouse gases for emissions trading. Different forms of emissions trading are defined and criteria for determining whether a source is sui...

Erik Haites; Angelo Proestos

2000-01-01T23:59:59.000Z

79

E-Print Network 3.0 - acid diethyl ester Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

University Collection: Chemistry 98 RAFT Polymerization of a Novel Activated Ester Monomer and Conversion to a Terpyridine-Containing Homopolymer Summary: -succinimide...

80

E-Print Network 3.0 - antiproliferative cephalotaxus esters Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

JP, Perchellet EM. Phorbol ester tumor promoters and multistage skin carcinogenesis. ISI Atlas... . Perchellet EM, Gali HU, Gao XM, Perchellet JP. Ability of the nonphorbol...

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

E-Print Network 3.0 - activated ester terminated Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Developmental Biology, University of Michigan Collection: Biology and Medicine 39 Synthesis of Higher Fatty Acid Starch Esters using Vinyl Laurate and Stearate as Reactants...

82

Poly(vinylidenefluoride)-hexafluoropropyleneĖmethyl N-methylpyrrolidinium-N-acetate trifluoromethanesulfonylimideĖlithium trifluoromethanesulfonylimide gel electrolytes  

Science Journals Connector (OSTI)

New polymer-ionic liquid-lithium salt gel electrolytes (PILGEs) were prepared using poly(vinylidenefluoride)-hexafluoropropylene copolymer (PVdF(HFP)), methyl N-methylpyrrolidinium-N-acetate trifluoromethanesulfonimide ([MMEPyr][TFSI]), and lithium trifluoromethanesulfonylimide (LiTFSI) in order to investigate the effects of ionic liquids containing an ester group on the electrochemical properties of polymer gel electrolytes. Free standing ionic gels consisting of PVdF(HFP), [MMEPyr][TFSI], and LiTFSI were prepared in a range of weight ratio of polymer/[MMEPyr][TFSI]/LiTFSI†=†1/2/0.1†?†1. Ionic conductivities for the prepared \\{PILGEs\\} were measured with changing temperature and weight ratio of LiTFSI and the obtained values were found to be reasonable (10?4†S†cm?1) over the operating temperatures.

Ki-Sub Kim; Seul Bee Lee; Hyunjoo Lee; Hoon Sik Kim; Youngwoo Lee; Kwangsoo Kwack

2009-01-01T23:59:59.000Z

83

Development of a Sustainable Catalytic Ester Amidation Process  

Science Journals Connector (OSTI)

Development of a Sustainable Catalytic Ester Amidation Process ... In this paper, and as part of our ongoing interests in the advancement and uptake of green synthesis in a discovery chemistry setting,(17-19) we report our efforts to develop a significantly more sustainable process and demonstrate its applicability to the synthesis of a range of lead-like substrates. ... Overall, consideration of the isolated yields obtained with this new and sustainable coupling protocol indicates that the current method is an extremely viable alternative compared to the previously developed approach. ...

Nicola Caldwell; Craig Jamieson; Iain Simpson; Allan J. B. Watson

2013-07-30T23:59:59.000Z

84

Process Reform, Security and Suitability - December 17, 2008 | Department  

Broader source: Energy.gov (indexed) [DOE]

Process Reform, Security and Suitability - December 17, 2008 Process Reform, Security and Suitability - December 17, 2008 Process Reform, Security and Suitability - December 17, 2008 December 17, 2008 This is to report on the progress made to improve the timeliness and effectiveness of our hiring and clearing decisions and the specific plan to reform the process further, in accordance with our initial proposals made in April ofthis year. In response to significant, continuing security clearance timeliness concerns, Congress called for improvements and established specific timeliness goals as part of the Intelligence Reform and Terrorism Prevention Act of 2004 (IRTPA). Since the enactment of IRTPA, average timeliness for 90 percent of all clearance determinations reported has been substantially improved, from 265 days (in 2005) to 82 days (4th Quarter,

85

Web Page Classification on Child Suitability Carsten Eickhoff  

E-Print Network [OSTI]

Web Page Classification on Child Suitability Carsten Eickhoff Delft University of Technology Delft, Netherlands c.eickhoff@tudelft.nl Pavel Serdyukov Delft University of Technology Delft, Netherlands p.serdyukov@tudelft.nl Arjen P. de Vries Centrum Wiskunde & Informatica Amsterdam, Netherlands arjen@acm.org ABSTRACT Children

86

Structural Interactions within Lithium Salt Solvates: Cyclic Carbonates and Esters  

SciTech Connect (OSTI)

Only limited information is available regarding the manner in which cyclic carbonate and ester solvents coordinate Li+ cations in electrolyte solutions for lithium batteries. One approach to gleaning significant insight into these interactions is to examine crystalline solvate structures. To this end, eight new solvate structures are reported with ethylene carbonate, ?-butyrolactone and ?-valerolactone: (EC)3:LiClO4, (EC)2:LiClO4, (EC)2:LiBF4, (GBL)4:LiPF6, (GBL)1:LiClO4, (GVL)1:LiClO4, (GBL)1:LiBF4 and (GBL)1:LiCF3SO3. The crystal structure of (EC)1:LiCF3SO3 is also re-reported for comparison. These structures enable the factors which govern the manner in which the ions are coordinated and the ion/solvent packingóin the solid-stateóto be scrutinized in detail.

Seo, D. M.; Afroz, Taliman; Allen, Joshua L.; Boyle, Paul D.; Trulove, Paul C.; De Long, Hugh C.; Henderson, Wesley A.

2014-11-13T23:59:59.000Z

87

Wind farm land suitability indexing using multi-criteria analysis  

Science Journals Connector (OSTI)

Wind farm siting can be considered as Multi Criteria Decision Making (MCDM) problem that consists of set of alternative locations and set of selection criteria. This study applied multi-criteria decision making approach using Analytical Hierarchy Process with Ordered Weigh Averaging AHP-OWA aggregation function to derive wind farm land suitability index and classification under Geographical Information System (GIS) environment. Linguistic quantifierís version of AHP-OWA aggregation function was used to classify lands based on their suitability for wind farm installation. Different selection criteria were considered including economical (distance to road, terrain slope), social (urban area), environmental (historical locations, wildlife and natural reserves) and technical (wind power density, energy demand matching, percentage of sustainable wind, turbulence intensity, sand dunes). A case study of the proposed approach is implemented and presented for Oman.

Sultan Al-Yahyai; Yassine Charabi; Adel Gastli; Abdullah Al-Badi

2012-01-01T23:59:59.000Z

88

Corrosion resistant coatings suitable for elevated temperature application  

DOE Patents [OSTI]

The present invention relates to corrosion resistance coatings suitable for elevated temperature applications, which employ compositions of iron (Fe), chromium (Cr), nickel (Ni) and/or aluminum (Al). The compositions may be configured to regulate the diffusion of metals between a coating and a substrate, which may then influence coating performance, via the formation of an inter-diffusion barrier layer. The inter-diffusion barrier layer may comprise a face-centered cubic phase.

Chan, Kwai S. (San Antonio, TX); Cheruvu, Narayana Sastry (San Antonio, TX); Liang, Wuwei (Austin, TX)

2012-07-31T23:59:59.000Z

89

Methylal and Methylal-Diesel Blended Fuels from Use In Compression-Ignition Engines  

SciTech Connect (OSTI)

Gas-to-liquids catalytic conversion technologies show promise for liberating stranded natural gas reserves and for achieving energy diversity worldwide. Some gas-to-liquids products are used as transportation fuels and as blendstocks for upgrading crude derived fuels. Methylal (CH{sub 3}-O-CH{sub 2}-O-CH{sub 3}) also known as dimethoxymethane or DMM, is a gas-to-liquid chemical that has been evaluated for use as a diesel fuel component. Methylal contains 42% oxygen by weight and is soluble in diesel fuel. The physical and chemical properties of neat methylal and for blends of methylal in conventional diesel fuel are presented. Methylal was found to be more volatile than diesel fuel, and special precautions for distribution and fuel tank storage are discussed. Steady state engine tests were also performed using an unmodified Cummins 85.9 turbocharged diesel engine to examine the effect of methylal blend concentration on performance and emissions. Substantial reductions of particulate matter emissions h ave been demonstrated 3r IO to 30% blends of methylal in diesel fuel. This research indicates that methylal may be an effective blendstock for diesel fuel provided design changes are made to vehicle fuel handling systems.

Keith D. Vertin; James M. Ohi; David W. Naegeli; Kenneth H. Childress; Gary P. Hagen; Chris I. McCarthy; Adelbert S. Cheng; Robert W. Dibble

1999-05-05T23:59:59.000Z

90

E-Print Network 3.0 - acid isopropyl ester Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5087-5090,1988 0040-403988 3.00 + .oO Printed in Great Britain Pergamon Press plc Summary: into their corresponding esters using Jones' (acidic), and permanganate or...

91

A Csp3ĖCsp3 Bond Forming Reductive Condensation of ?-Keto Esters and Enolizable Carbon Pronucleophiles  

Science Journals Connector (OSTI)

The preparation of densely functionalized unsymmetrical 1,4-dicarbonyl structural motifs by a phosphorus(III)-mediated reductive condensation of ?-keto esters and enolizable carbon pronucleophiles is described. The reaction, which is initiated by KukhtinĖ...

Wei Zhao; Darla M. Fink; Carolyn A. Labutta; Alexander T. Radosevich

2013-06-05T23:59:59.000Z

92

Emulsion polymerization of ethylene-vinyl acetate-branched vinyl ester using a pressure reactor system.  

E-Print Network [OSTI]

??A new pressure reactor system was designed to synthesize a novel branched ester-ethylene-vinyl acetate (BEEVA) emulsion polymer. The reactor system was capable of handling pressureÖ (more)

Tan, Chee Boon

2008-01-01T23:59:59.000Z

93

E-Print Network 3.0 - acid allyl ester Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbons of High Summary: to this problem. This is the case of the copper-mediated SN2 substitu- tion of chiral allylic esters of defined... Ratios of Cuprate Addition on...

94

E-Print Network 3.0 - acid 2-benzothiazolylthiomethyl ester Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

results for: acid 2-benzothiazolylthiomethyl ester Page: << < 1 2 3 4 5 > >> 1 GTQ, Chemistry 212, Dr. Glaser, FS96 --1 --GTQ on Lactones. (30 points, reaction chem., mechanistic...

95

E-Print Network 3.0 - acetoacetic acid esters Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sample search results for: acetoacetic acid esters Page: << < 1 2 3 4 5 > >> 1 GTQ, Chemistry 212, Dr. Glaser, FS96 --1 --GTQ on Michael Reactions. (20 points, synthesis,...

96

Synthesis of Esters from Cage-Like Unsaturated Hydrocarbons, Carboxylic Acid Anhydrides, and Water  

Science Journals Connector (OSTI)

A convenient method for the preparation of esters was developed on the basis of reaction of cage-like polycyclic olefins with carboxylic acid anhydrides and water. Mixed anhydrides were found to give rise to t...

M. K. Mamedov; E. K. Nabieva; R. A. Rasulova

97

Silicon nanocrystals as light sources: stable, efficient and fast photoluminescence with suitable passivation  

Science Journals Connector (OSTI)

Silicon optoelectronics is an emerging technological platform, which holds promise for providing better performance, mostly in terms of lower dissipation losses, than the traditional electronics. However, a monolithic integrated light source is still missing since bulk silicon is a very poor light emitter due to its indirect bandgap. The situation dramatically changes when the size of the crystal is reduced down into nanometric dimension (<5 nm), when efficient room-temperature luminescence of these tiny silicon nanocrystals sets in. In this contribution, we present a study of silicon nanocrystals as light sources. We compare the photoluminescence properties of silicon nanocrystals with three different types of surface passivation (hydrogen, silicon oxide and methyl-based capping), which has substantial impact. We show that with sufficiently small sizes and suitable surface passivation, the photoluminescence properties of silicon nanocrystals can reach a level comparable with direct-bandgap semiconductor nanocrystals (radiative lifetime of 10 ns, stable macroscopic quantum yield of 20%). Apart from studying photoluminescence properties on a macroscopic level, we also carried out microscopical room-temperature single-nanocrystal photoluminescence spectroscopy experiments. These spectra revealed the occurrence of a fine structure (peaks 150 meV apart), practically identical with a structure already observed in single-nanocrystal spectra of silicon by other groups and very similar to a structure observed in a fundamentally different type of semiconductor nanocrystals (IIVI material). We propose that all these observations are linked with the same process, most probably the emission of trions in nanocrystals, although further measurements are necessary to support this claim.

Kateř ina Ků sov√°

2012-01-01T23:59:59.000Z

98

Effect of salinity on methylation of mercury  

SciTech Connect (OSTI)

Monomethyl and dimethylmercury are potent neurotoxins subject to biomagnification in food webs. This fact was tragically demonstrated by the Minamata and Niigata poisoning incidents in Japan in which 168 persons who ate seafood from mercury polluted waters were poisoned, 52 fatally. Shortly after these two incidents, work conducted in freshwater environments demonstrated the microbial conversion of inorganic and phenylmercury compounds to mono- and di-methylmercury. Consideration of some fragmentary evidence from the literature, however, indicates that the rate and the significance of microbial methylation of mercury in freshwater and saltwater environments may not be the same. A demonstrated relationship between mercury methylation rates and water salinity would greatly influence our thinking about mercury pollution effects in marine versus freshwater environments. Since we were unable to locate published reports on this subject, we are investigating the influence of salinity on the rate of mercury methylation in an estuarine sediment.

Blum, J.E.; Bartha, R.

1980-09-01T23:59:59.000Z

99

Accelerated Degradation of Methyl Iodide by Agrochemicals  

Science Journals Connector (OSTI)

Accelerated Degradation of Methyl Iodide by Agrochemicals ... Integrating the application of certain agrochemicals with soil fumigation provides a novel approach to reduce excessive fumigant emissions. ... This study investigated the potential for several agrochemicals that are commonly used in farming operations, including fertilizers and nitrification inhibitors, to transform MeI in aqueous solution. ...

Wei Zheng; Sharon K. Papiernik; Mingxin Guo; Scott R. Yates

2003-01-01T23:59:59.000Z

100

Low temperature synthesis of methyl formate  

DOE Patents [OSTI]

A gas reaction process for the preferential production of methyl formate over the co-production of methanol wherein the reactant ratio of CO/H.sub.2 is upgraded and this reaction takes place at low temperatures of 50.degree.-150.degree. C. and moderate pressures of .gtoreq.100 psi.

Mahajan, Devinder (Selden, NY); Slegeir, William A. (Hampton Bays, NY); Sapienza, Richard S. (Shoreham, NY); O'Hare, Thomas E. (Huntington Station, NY)

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

SUITABILITY OF MAGNESIUM OXIDE AS A VISAR WINDOW  

SciTech Connect (OSTI)

Impedance matching of a velocity interferometer for any reflector (VISAR) window to a material under study helps simplify a shock experiment by effectively allowing one to measure an in situ particle velocity. The shock impedance of magnesium oxide (MgO) falls roughly midway between those of sapphire and LiF, two of the most frequently used VISAR window materials. A series of symmetric impact experiments was performed to characterize the suitability of single crystal, (100) oriented magnesium oxide as a VISAR window material. These experiments yielded good results and show the viability of MgO as a VISAR window up to 23 GPa. Results were used to determine window correction factors and, subsequently, to estimate the pressure induced change in index of refraction. In many of the shots in this work we exceeded the Hugoniot elastic limit (HEL) of MgO, and both elastic and plastic waves are evident in the velocity profiles. The presence of both waves within the VISAR window complicates the typical VISAR window correction analysis. Preliminary analysis of the elastic and plastic contributions to the window correction is presented.

G. D. Stevens; L. R. Veeser; P. A. Rigg; R. S. Hixson

2005-01-01T23:59:59.000Z

102

Motion detector suitable for detecting earthquakes and the like  

SciTech Connect (OSTI)

A motion detector device is described suitable for detecting vibrational tremors such as earthquakes comprising: an inertial mass, spring means comprising a spring barb oriented principally for motion along a horizontal axis and a coil spring oriented principally for motion along a vertical axis, means for resiliently supporting the inertial mass on the spring means for resilient motion along both the horizontal and vertical axes comprising means for anchoring the spring barb at one end thereof and means for connecting the coil spring between the other end of the spring barb and the inertial mass, the mass and spring means forming a resonant mechanical vibration circuit at a predetermined vibrational frequency corresponding to that of the vibrational tremor to be detected, spaced apart oppositely positioned electrical switching contact means connected to the spring means and the inertial mass respectively, the contact means being brought into switching contact with each other when the vibrational circuit is excited at the predetermined vibrational frequency, and alarm means connected to the switching means for providing an alarm signal when the contact means are brought into switching contact.

Windisch, D.E.

1987-09-01T23:59:59.000Z

103

E-Print Network 3.0 - amplified methylation polymorphism Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Sciences and Ecology 2 Infraspecific DNA Methylation Polymorphism in Cotton (Gossypium Summary: Infraspecific DNA Methylation Polymorphism in Cotton (Gossypium...

104

Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids  

SciTech Connect (OSTI)

Concentrating solar power (CSP) facilities are comprised of many miles of fluid-filled pipes arranged in large grids with reflective mirrors used to capture radiation from the sun. Solar radiation heats the fluid which is used to produce steam necessary to power large electricity generation turbines. Currently, organic, oil-based fluid in the pipes has a maximum temperature threshold of 400 įC, allowing for the production of electricity at approximately 15 cents per kilowatt hour. The DOE hopes to foster the development of an advanced heat transfer fluid that can operate within higher temperature ranges. The new heat transfer fluid, when used with other advanced technologies, could significantly decrease solar electricity cost. Lower costs would make solar thermal electricity competitive with gas and coal and would offer a clean, renewable source of energy. Molten salts exhibit many desirable heat transfer qualities within the range of the project objectives. Halotechnics developed advanced heat transfer fluids (HTFs) for application in solar thermal power generation. This project focused on complex mixtures of inorganic salts that exhibited a high thermal stability, a low melting point, and other favorable characteristics. A high-throughput combinatorial research and development program was conducted in order to achieve the project objective. Over 19,000 candidate formulations were screened. The workflow developed to screen various chemical systems to discover salt formulations led to mixtures suitable for use as HTFs in both parabolic trough and heliostat CSP plants. Furthermore, salt mixtures which will not interfere with fertilizer based nitrates were discovered. In addition for use in CSP, the discovered salt mixtures can be applied to electricity storage, heat treatment of alloys and other industrial processes.

Raade, Justin; Roark, Thomas; Vaughn, John; Bradshaw, Robert

2013-07-22T23:59:59.000Z

105

ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) |  

Open Energy Info (EERE)

ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) ESTER, Enel integrated System for TEsts on stoRage (Smart Grid Project) Jump to: navigation, search Project Name ESTER, Enel integrated System for TEsts on stoRage Country Italy Headquarters Location Livorno, Italy Coordinates 43.551876¬į, 10.308011¬į Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.551876,"lon":10.308011,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

106

Lubricant return comparison of naphthenic and polyol ester oils in R-134a household refrigeration applications  

SciTech Connect (OSTI)

This paper presents mineral oils and polyol esters as possible lubricant options for domestic refrigeration applications employing R-134a as the heat exchange fluid. A performance comparison, based on data presented, is made between the mineral oils and polyol esters evaluated. To more closely examine lubricant return with N-70 and R-134a and ensure that the oil is not contributing to any deterioration in efficiency due to its accumulation in evaporators, a special test unit was designed with a difficult oil return configuration and its performance carefully monitored. Oil return with a hydrofluorocarbon-miscible polyol ester, R-133-O was also evaluated in this setup and its performance results compared to those obtained with the naphthenic refrigeration oil.

Reyes-Gavilan, J.L.; Flak, G.T.; Tritcak, T.R. [Witco Corp., Oakland, NJ (United States)

1996-12-31T23:59:59.000Z

107

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles  

SciTech Connect (OSTI)

The viscosities of both aqueous and cyanate ester monomer (BECy) based suspensions of alumina nanoparticle were studied. The applications for these suspensions are different: aqueous suspensions of alumina nanoparticles are used in the production of technical ceramics made by slip casting or tape casting, and the BECy based suspensions are being developed for use in an injection-type composite repair resin. In the case of aqueous suspensions, it is advantageous to achieve a high solids content with low viscosity in order to produce a high quality product. The addition of a dispersant is useful so that higher solids content suspensions can be used with lower viscosities. For BECy suspensions, the addition of nanoparticles to the BECy resin is expected to enhance the mechanical properties of the cured composite. The addition of saccharides to aqueous suspensions leads to viscosity reduction. Through DSC measurements it was found that the saccharide molecules formed a solution with water and this resulted in lowering the melting temperature of the free water according to classic freezing point depression. Saccharides also lowered the melting temperature of the bound water, but this followed a different rule. The shear thinning and melting behaviors of the suspensions were used to develop a model based on fractal-type agglomeration. It is believed that the structure of the particle flocs in these suspensions changes with the addition of saccharides which leads to the resultant viscosity decrease. The viscosity of the BECy suspensions increased with solids content, and the viscosity increase was greater than predicted by the classical Einstein equation for dilute suspensions. Instead, the Mooney equation fits the viscosity behavior well from 0-20 vol% solids. The viscosity reduction achieved at high particle loadings by the addition of benzoic acid was also investigated by NMR. It appears that the benzoic acid interacts with the surface of the alumina particle which may be the cause of the viscosity reduction. The flow behavior of alumina particles in water and BECy is markedly different. Aqueous alumina suspensions are shear thinning at all alumina loadings and capable of 50 vol% loading before losing fluidity whereas BECy/alumina suspensions show Newtonian behavior up to 5 vol%, and above 5 vol% show shear thinning at all shear rates. Highly loaded suspensions (i.e. 20vol% alumina) exhibit shear thinning at low and moderate shear rates and shear thickening at higher shear rates. The maximum particle loading for a fluid suspension, in this case, appears to be about 20 vol%. The difference in the viscosity of these suspensions must be related to the solvent-particle interactions for each system. The reason is not exactly known, but there are some notable differences between BECy and water. Water molecules are {approx}0.28 nm in length and highly hydrogen bonded with a low viscosity (1 mPa's) whereas in the cyanate ester (BECy) system, the solvent molecule is about 1.2 nm, in the largest dimension, with surfaces of varied charge distribution throughout the molecule. The viscosity of the monomer is also reasonably low for organic polymer precursor, about 7 mPa's. Nanoparticles in water tend to agglomerate and form flocs which are broken with the shear force applied during viscosity measurement. The particle-particle interaction is very important in this system. In BECy, the particles appear to be well dispersed and not as interactive. The solvent-particle interaction appears to be most important. It is not known exactly how the alumina particles interact with the monomer, but NMR suggests hydrogen bonding. These hydrogen bonds between the particle and monomer could very well affect the viscosity. A conclusion that can be reached in this work is that the presence of hydroxyl groups on the surface of the alumina particles is significant and seems to affect the interactions between other particles and the solvent. Thus, the hydrogen bonding between particles, particle/additive and/or particle/solvent dictates the behavior of nanos

Lawler, Katherine

2009-08-05T23:59:59.000Z

108

Assessing the Suitability of Recycled Plastics Used as Agricultural Soil Covers:? Migration Study and Experimental Harvest  

Science Journals Connector (OSTI)

The present work is focused on evaluating the suitability of recycling postconsumer agricultural plastic films again for the same use. The criteria to assess the suitability was based on migration study. Both overall and specific migration tests were ...

C. NerŪn; R. Batlle

1998-12-05T23:59:59.000Z

109

Nanoscale array structures suitable for surface enhanced raman scattering and methods related thereto  

DOE Patents [OSTI]

Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.

Bond, Tiziana C.; Miles, Robin; Davidson, James C.; Liu, Gang Logan

2014-07-22T23:59:59.000Z

110

Production of methyl tert-alkyl ethers  

SciTech Connect (OSTI)

The transition to the use of unleaded gasolines has required the replacement of tetraethyl lead by oxygen-containing compounds such as methanol, ethanol, and ethers, which are termed {open_quotes}oxygenates{close_quotes} in the technical literature. These may be used in commercial gasolines in amounts of 10-15% by volume, equivalent to 2% oxygen by weight. When methyl tert-butyl ether (MTBE) is used, the oxygen content may amount to 2.7% by weight. This oxygenate gives a significant improvement of knock resistance of naphtha fractions, the greatest effects being observed for straight-run naphthas and reformer naphthas produced under normal conditions; the MTBE also improves the engine power and economy characteristics and lowers the carbon monoxide content in the exhaust by 15-30% and the hydrocarbon content by 7-8%. This paper describes methods for the production of MTBE and also methyl tert-alkyl ethers.

Trofimov, V.A.

1995-01-01T23:59:59.000Z

111

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis flavicarpa) with citric acid by using  

E-Print Network [OSTI]

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis for extraction of high-ester yellow passion fruit pectin. √? 2007 Elsevier Ltd. All rights reserved. Keywords: Pectin extraction; Passion fruit peel; Degree of esterification; Response surface methodology; Central

Ferreira, M√°rcia M. C.

112

E-Print Network 3.0 - assessing donor suitability Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

guidelines for potential renal transplant recipients prior to initiating evaluation process. Summary: to determine patient's transplant suitability. These patients are...

113

A density functional theory model of mechanically activated silyl ester hydrolysis  

SciTech Connect (OSTI)

To elucidate the mechanism of the mechanically activated dissociation of chemical bonds between carboxymethylated amylose (CMA) and silane functionalized silicon dioxide, we have investigated the dissociation kinetics of the bonds connecting CMA to silicon oxide surfaces with density functional calculations including the effects of force, solvent polarizability, and pH. We have determined the activation energies, the pre-exponential factors, and the reaction rate constants of candidate reactions. The weakest bond was found to be the silyl ester bond between the silicon and the alkoxy oxygen atom. Under acidic conditions, spontaneous proton addition occurs close to the silyl ester such that neutral reactions become insignificant. Upon proton addition at the most favored position, the activation energy for bond hydrolysis becomes 31 kJ?mol{sup ?1}, which agrees very well with experimental observation. Heterolytic bond scission in the protonated molecule has a much higher activation energy. The experimentally observed bi-exponential rupture kinetics can be explained by different side groups attached to the silicon atom of the silyl ester. The fact that different side groups lead to different dissociation kinetics provides an opportunity to deliberately modify and tune the kinetic parameters of mechanically activated bond dissociation of silyl esters.

Pill, Michael F.; Schmidt, Sebastian W. [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany) [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany); Institut fŁr Physikalische Chemie, Christian-Albrechts-Universitšt zu Kiel, OlshausenstraŖe 40, 24098 Kiel (Germany); Center for Nanoscience (CeNS), Geschwister-Scholl-Platz 1, 80539 Munich (Germany); Beyer, Martin K. [Institut fŁr Physikalische Chemie, Christian-Albrechts-Universitšt zu Kiel, OlshausenstraŖe 40, 24098 Kiel (Germany) [Institut fŁr Physikalische Chemie, Christian-Albrechts-Universitšt zu Kiel, OlshausenstraŖe 40, 24098 Kiel (Germany); Institut fŁr Ionenphysik und Angewandte Physik, Leopold-Franzens-Universitšt Innsbruck, TechnikerstraŖe 25, 6020 Innsbruck (Austria); Clausen-Schaumann, Hauke [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany) [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany); Center for Nanoscience (CeNS), Geschwister-Scholl-Platz 1, 80539 Munich (Germany); Kersch, Alfred, E-mail: akersch@hm.edu [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany)] [Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstr. 34, 80335 Munich (Germany)

2014-01-28T23:59:59.000Z

114

E-Print Network 3.0 - acid ester derivatives Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sample search results for: acid ester derivatives Page: << < 1 2 3 4 5 > >> 1 Exam 2, Chemistry 212, Dr. Glaser, FS96 --1 --C h e m i s t r y 2 1 2 --F a l l S e m e s t e r 1 9 9...

115

Mercury methylation in periphyton of the Florida Everglades  

Science Journals Connector (OSTI)

... aquatic ecosystems is of global concern due to health effects associated with eating fish with ... This new methylation site has implications for trophic transfer of

116

A review on environmental factors regulating arsenic methylation in humans  

SciTech Connect (OSTI)

Subjects exposed to arsenic show significant inter-individual variation in urinary patterns of arsenic metabolites but insignificant day-to-day intra-individual variation. The inter-individual variation in arsenic methylation can be partly responsible for the variation in susceptibility to arsenic toxicity. Wide inter-ethnic variation and family correlation in urinary arsenic profile suggest a genetic effect on arsenic metabolism. In this paper the environmental factors affecting arsenic metabolism are reviewed. Methylation capacity might reduce with increasing dosage of arsenic exposure. Furthermore, women, especially at pregnancy, have better methylation capacity than their men counterparts, probably due to the effect of estrogen. Children might have better methylation capacity than adults and age shows inconsistent relevance in adults. Smoking and alcohol consumption might be associated with a poorer methylation capacity. Nutritional status is important in the methylation capacity and folate may facilitate the methylation and excretion of arsenic. Besides, general health conditions and medications might influence the arsenic methylation capacity; and technical problems can cause biased estimates. The consumption of seafood, seaweed, rice and other food with high arsenic contents and the extent of cooking and arsenic-containing water used in food preparation may also interfere with the presentation of the urinary arsenic profile. Future studies are necessary to clarify the effects of the various arsenic metabolites including the trivalent methylated forms on the development of arsenic-induced human diseases with the consideration of the effects of confounding factors and the interactions with other effect modifiers.

Tseng, C.-H. [National Taiwan University College of Medicine, Taipei, Taiwan (China); Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan (China); Department of Medical Research and Development, National Taiwan University Hospital Yun-Lin Branch, Yun-Lin, Taiwan (China); School of Public Health, Taipei Medical University, Taipei, Taiwan (China); Division of Environmental Health and Occupational Medicine of the National Health Research Institutes, Taipei, Taiwan (China)], E-mail: ccktsh@ms6.hinet.net

2009-03-15T23:59:59.000Z

117

Effect of Fuel Injection Timing on the Emissions of a Direct-Injection (DI) Diesel Engine Fueled with Canola Oil Methyl Ester?Diesel Fuel Blends  

Science Journals Connector (OSTI)

(3, 4) A lot of researchers have reported that using biodiesel as a fuel in diesel engines causes a diminution in harmful exhaust emissions as well as equivalent engine performance with diesel fuel. ... Engine tests have been carried out with the aim of obtaining comparative measures of torque, power, specific fuel consumption and emissions such as CO, smoke d. and NOx to evaluate and compute the behavior of the diesel engine running on the above-mentioned fuels. ... Ma, Z.; Huang, Z. H.; Li, C.; Wang, X. B.; Miao, H.Effects of fuel injection timing on combustion and emission characteristics of a diesel engine fueled with diesel?propane blends Energy Fuels 2007, 21 ( 3) 1504Ė 1510 ...

Cenk Sayin; Metin Gumus; Mustafa Canakci

2010-03-11T23:59:59.000Z

118

OBSERVATIONS IN REACTIVITY BETWEEN BH CONTAINING COMPOUNDS AND ORGANOMETALLIC REAGENTS: SYNTHESIS OF BORONIC ACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES  

E-Print Network [OSTI]

Reaction of BH 3 :THF with magnesium hydride byproduct. A.It was also observed that magnesium hydride can partiallyACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES A dissertation

Clary, Jacob William

2012-01-01T23:59:59.000Z

119

Green Solvents for Polymerization of Methyl Methacrylate to Poly(Methyl Methacrylate)  

Science Journals Connector (OSTI)

Solvents are often volatile organic compounds (VOCs) ... decade, chemistry research into the use of greener, alternative solvents has been grown enormously. Alternative solvents suitable for green chemistry are t...

S. Krishna Mohan

2012-01-01T23:59:59.000Z

120

EA-1157: Methyl Chloride via Oxyhydrochlorination of Methane: A Building  

Broader source: Energy.gov (indexed) [DOE]

57: Methyl Chloride via Oxyhydrochlorination of Methane: A 57: Methyl Chloride via Oxyhydrochlorination of Methane: A Building Black for Chemicals and Fuels from Natural Gas, Carrollton, Kentucky EA-1157: Methyl Chloride via Oxyhydrochlorination of Methane: A Building Black for Chemicals and Fuels from Natural Gas, Carrollton, Kentucky SUMMARY This EA evaluates the environmental impacts for the proposal to advance Oxyhydrochlorination technology to an integrated engineering-scale process. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD September 27, 1996 EA-1157: Finding of No Significant Impact Methyl Chloride via Oxyhydrochlorination of Methane: A Building Black for Chemicals and Fuels from Natural Gas September 27, 1996 EA-1157: Final Environmental Assessment Methyl Chloride via Oxyhydrochlorination of Methane: A Building Black for

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
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121

Evaluation of bisphenol E cyanate ester for the resin-injection repair of advanced composites  

SciTech Connect (OSTI)

This thesis is a compilation of a general introduction and literature review that ties together the subsequent chapters which consist of two journal articles that have yet to be submitted for publication. The overall topic relates to the evaluation and application of a new class of cyanate ester resin with unique properties that lend it applicable to use as a resin for injection repair of high glass transition temperature polymer matrix composites. The first article (Chapter 2) details the evaluation and optimization of adhesive properties of this cyanate ester and alumina nanocomposites under different conditions. The second article (Chapter 3) describes the development and evaluation of an injection repair system for repairing delaminations in polymer matrix composites.

Wilber Yaote Lio

2009-12-19T23:59:59.000Z

122

The effects of solvent mixtures on the gel permeation chromatography of alkanes, fatty acids, and fatty acid esters  

E-Print Network [OSTI]

THE EFFECTS OF SOLVENT MIXTURES ON THE GEL PERMEATION CHROMATOGRAPHY OF ALKANES, FATTY ACIDS, AND FATTY ACID ESTERS A Thesis PATRICK LEE BOLTON Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1985 Major Subject: Chemistry THE EFFECTS OP SOLVENT MIXTURES ON THE GEL PERMEATION CHROMATOGRAPHY OF ALKANES, FATTY ACIDS, AND FATTY ACID ESTERS A Thesis by PATRICK LEE BOLTON Approved...

Bolton, Patrick Lee

1985-01-01T23:59:59.000Z

123

E-Print Network 3.0 - arsenic methylation profiles Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: , urinary arsenic methylation profiles, and urothelial carcinoma susceptibility. Food Chem. Toxicol. 46, 929... and in vitro studies suggest that methylated arsenic...

124

Assessing certainty and uncertainty in riparian habitat suitability models by identifying parameters with extreme outputs  

Science Journals Connector (OSTI)

The aim of this paper is to introduce a computationally efficient uncertainty assessment approach using an index-based habitat suitability model. The approach focuses on uncertainty in ecological knowledge regarding parameters of index curves and weights. ... Keywords: Habitat model, Riparian vegetation, Suitability index, Uncertainty

Baihua Fu, Joseph H. A. Guillaume

2014-10-01T23:59:59.000Z

125

Variation in habitat suitability does not always relate to variation in species' plant functional traits  

Science Journals Connector (OSTI)

...Variation in habitat suitability does not always relate to variation...this positive relationship does not hold for some species...Cornelissen, J. H. C. , 2003 A handbook of protocols for standardised...Variation in habitat suitability does not always relate to variation...

2010-01-01T23:59:59.000Z

126

Engineering of Bacterial Methyl Ketone Synthesis for Biofuels  

Science Journals Connector (OSTI)

...composition to optimize diesel fuel properties. Supplemental...for the synthesis of fuels and chemicals. Nature...2003. Tools for genetic engineering in the amino acid-producing...Knothe, G . 2008. biodiesel: optimizing fatty ester composition to improve fuel properties. Energy Fuels...

Ee-Been Goh; Edward E. K. Baidoo; Jay D. Keasling; Harry R. Beller

2011-10-28T23:59:59.000Z

127

The use of novel biodegradable, optically active and nanostructured poly(amide-ester-imide) as a polymer matrix for preparation of modified ZnO based bionanocomposites  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer A novel biodegradable and nanostructured PAEI based on two amino acids, was synthesized. Black-Right-Pointing-Pointer ZnO nanoparticles were modified via two different silane coupling agents. Black-Right-Pointing-Pointer PAEI/modified ZnO BNCs were synthesized through ultrasound irradiation. Black-Right-Pointing-Pointer ZnO particles were dispersed homogeneously in PAEI matrix on nanoscale. Black-Right-Pointing-Pointer The effect of ZnO nanoparticles on the properties of synthesized polymer was examined. -- Abstract: A novel biodegradable and nanostructured poly(amide-ester-imide) (PAEI) based on two different amino acids, was synthesized via direct polycondensation of biodegradable N,N Prime -bis[2-(methyl-3-(4-hydroxyphenyl)propanoate)]isophthaldiamide and N,N Prime -(pyromellitoyl)-bis-L-phenylalanine diacid. The resulting polymer was characterized by FT-IR, {sup 1}H NMR, specific rotation, elemental analysis, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) analysis. The synthesized polymer showed good thermal stability with nano and sphere structure. Then PAEI/ZnO bionanocomposites (BNCs) were fabricated via interaction of pure PAEI and ZnO nanoparticles. The surface of ZnO was modified with two different silane coupling agents. PAEI/ZnO BNCs were studied and characterized by FT-IR, XRD, UV/vis, FE-SEM and TEM. The TEM and FE-SEM results indicated that the nanoparticles were dispersed homogeneously in PAEI matrix on nanoscale. Furthermore the effect of ZnO nanoparticle on the thermal stability of the polymer was investigated with TGA and DSC technique.

Abdolmaleki, Amir, E-mail: abdolmaleki@cc.iut.ac.ir [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of) [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Mallakpour, Shadpour, E-mail: mallak@cc.iut.ac.ir [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of) [Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of); Borandeh, Sedigheh [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)] [Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran (Iran, Islamic Republic of)

2012-05-15T23:59:59.000Z

128

Solar Energy to Drive Absorption Cooling Systems Suitable for Small Building Applications  

E-Print Network [OSTI]

results and an overview of the performance of low capacity single stage and half-effect absorption cooling systems, suitable for residential and small building applications. The primary heat source is solar energy supplied from flat plate collectors...

Gomri, R.

2010-01-01T23:59:59.000Z

129

Mapping red squirrel (Sciurus vulgaris) habitat suitability using GIS and remote sensing techniques†  

E-Print Network [OSTI]

The British red squirrel population has dramatically declined in the last years. The survival of the species in the UK may depend on the careful selection and management of suitable habitats. A deep understanding of its habitat requirements...

de Lamo, Xavier

2010-01-01T23:59:59.000Z

130

Methyl Bromide Recovery on Activated Carbon with Repeated Adsorption and Electrothermal Regeneration  

Science Journals Connector (OSTI)

The desorbed methyl bromide could then be recovered by condensation. ... The volume fraction of methyl bromide required to condense at 0 įC and atmospheric pressure is 0.895. ... To prevent the condensed methyl bromide from contacting air (and therefore evaporating), the methyl bromide was introduced under a layer of water inside the volumetric cylinder. ...

Jon D. Snyder; James G. Leesch

2001-05-24T23:59:59.000Z

131

Control of mercury methylation in wetlands through iron addition  

E-Print Network [OSTI]

Mason, R. P. ; Flegal, A. R. , Mercury speciation in the SanP. ; Flegal, A. R. , Decadal mercury trends in San FranciscoP. G. ; Nelson, D. C. , Mercury methylation from unexpected

Sedlak, David L; Ulrich, Patrick D

2009-01-01T23:59:59.000Z

132

Methyl bromide emissions to the atmosphere from temperate woodland ecosystems†  

E-Print Network [OSTI]

The environmental importance of methyl bromide (CH3Br) arises from its contribution to stratospheric ozone loss processes and, as a consequence, its emissions from anthropogenic sources are subject to the Montreal Protocol. A better understanding...

Drewer, Julia; Heal, Kate V; Smith, Keith A; Heal, Mathew R

2008-01-01T23:59:59.000Z

133

The Genetics of de novo Methylation in Arabidopsis thaliana  

E-Print Network [OSTI]

domains akin to UHRF1 and the VIM proteins. These proteinsthe VARIANT IN METHYLATION (VIM) family. In higher orderUHRF1 in mammal or the VIM proteins in plants. UHRF1/VIM

Greenberg, Maxim Van Cleef

2012-01-01T23:59:59.000Z

134

Graft polymerization of methyl methacrylate onto short leather fibers  

Science Journals Connector (OSTI)

In this work, the graft polymerization of methyl methacrylate (MMA) monomer onto short leather fibers (SLF) was investigated as a function of the ... grafting efficiency) were determined. Composites formulated wi...

T. J. Madera-Santana; F. VŠzquez Moreno

1999-03-01T23:59:59.000Z

135

A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester composites.  

E-Print Network [OSTI]

?? Enhancement of mechanical, thermal and hygrothermal properties of carbon fiber/vinyl ester (CFVE) composites through nanoparticle reinforcement has been investigated. CFVE composites are becoming moreÖ (more)

Powell, Felicia M.

2012-01-01T23:59:59.000Z

136

A study of the effects of nanoparticle modification on the thermal, mechanical and hygrothermal performance of carbon/vinyl ester compounds.  

E-Print Network [OSTI]

??Enhancement of mechanical, thermal and hygrothermal properties of carbon fiber/vinyl ester (CFVE) composites through nanoparticle reinforcement has been investigated. CFVE composites are becoming more andÖ (more)

Powell, Felicia M.

2012-01-01T23:59:59.000Z

137

The synthesis of some N-methylated aminoalkylphosphonic acids  

E-Print Network [OSTI]

(XLIII) were o heated with diethyl hydrogenphosphonate (XVI) at approximately 100 until the evolution of dimethylarnine (XXX) ceased. The 1-dimethyl- amino 1-alkenes (XLIV) reacted exothermically with diethyl hydro- genphosphonate (XVI) once... exothermically with methyl iodide at room temperature whereas the other eaters, which contained more bulky (R) substituents, did not. Secondly, the betaine obtained m the highest yield, N, N, N-trimethyl-N-(phosphono- methyl)ammonium hydroxide, mner salt...

Eikenberry, Jon Nathan

1966-01-01T23:59:59.000Z

138

Identification of Argentinian saline drylands suitable for growing Salicornia bigelovii for bioenergy  

Science Journals Connector (OSTI)

Abstract Salicornia bigelovii is an oilseed halophyte species that can be grown using saltwater in saline and coastal areas where conventional crops cannot be grown. Due to its high oil content, comparable with commercial crops, is a promising feedstock for biodiesel production. To determine the agroclimatic zoning of S. bigelovii in Argentina, thermal and rainfall indexes from its center of origin were taken into account and plotted for the period 1981Ė2010. The overlapping of the temperature and rainfall maps defined the agroclimatic zoning which determined optimal, very suitable, suitable, marginal and non-suitable areas for cultivation of S. bigelovii in Argentina. Subsequently, the Dryland Salinity classification of FAO was used to identify putative sites of implantation of S. bigelovii in moderately and strongly saline phases where soil electrical conductivity ranges from 12.4 to 22.1†mmhos/cm. Finally, the overlapping of both the agroclimatic suitability and Dryland Salinity maps afforded the agro-ecological suitability map, which showed the same five fitness classes defined in the agroclimatic zoning.

S.L. Falasca; A. Ulberich; A. Acevedo

2014-01-01T23:59:59.000Z

139

Neutron scattering investigations on methyl group dynamics in polymers.  

E-Print Network [OSTI]

Among the different dynamical processes that take place in polymers, methyl group rotation is perhaps the simplest one, since all the relevant interactions on the methyl group can be condensed in an effective mean-field one-dimensional potential. Recent experimental neutron scattering results have stimulated a new revival of the interest on methyl group dynamics in glasses and polymer systems. The existence of quantum rotational tunnelling of methyl groups in polymers was expected for a long time but only very recently (1998), these processes have been directly observed by high-resolution neutron scattering techniques. This paper revises and summarizes the work done on this topic over last ten years by means of neutron scattering. It is shown that the results obtained in many chemically and structurally different polymers can be consistently described in the whole temperature range ó from the quantum tunnelling limit to the classical hopping regime ó as well as in the librational spectrum, in terms of the Rotation Rate Distribution Model (RRDM), which was first proposed in 1994. This model introduces a distribution of potential barriers for methyl group rotation, which is associated to the disorder present in any structural glass. The molecular and structural origin of the barrier distribution in polymers is discussed on the basis of a huge collection of investigations reported in the literature, including recent fully atomistic molecular dynamics simulations.

Juan Colmenero; Angel J. Moreno; Angel AlegrŪa

2005-01-01T23:59:59.000Z

140

New gas mixtures suitable for rare event detection using a Micromegas-TPC detector  

E-Print Network [OSTI]

The aim of the presented work was to develop further techniques based on a Micromegas-TPC, in order to reach a high gas gain with good energy resolution, and to search for gas mixtures suitable for rare event detection. This paper focuses on xenon, which is convenient for the search of neutrinoless double beta decay in 136 Xe. Conversely, a small admixture of xenon to CF 4 can reduce attachment in the latter. This gas mixture would be suitable for dark matter searches and the study of solar and reactor neutrinos. Various configurations of the Micromegas plane were investigated and are described.

L. Ounalli; J-L. Vuilleumier; D. Schenker; J-M. Vuilleumier

2008-12-29T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Nested methylation-specific polymerase chain reaction cancer detection method  

DOE Patents [OSTI]

A molecular marker-based method for monitoring and detecting cancer in humans. Aberrant methylation of gene promoters is a marker for cancer risk in humans. A two-stage, or "nested" polymerase chain reaction method is disclosed for detecting methylated DNA sequences at sufficiently high levels of sensitivity to permit cancer screening in biological fluid samples, such as sputum, obtained non-invasively. The method is for detecting the aberrant methylation of the p16 gene, O 6-methylguanine-DNA methyltransferase gene, Death-associated protein kinase gene, RAS-associated family 1 gene, or other gene promoters. The method offers a potentially powerful approach to population-based screening for the detection of lung and other cancers.

Belinsky, Steven A. (Albuquerque, NM); Palmisano, William A. (Edgewood, NM)

2007-05-08T23:59:59.000Z

142

Wood Gas Processing To Generate Pure Hydrogen Suitable for PEM Fuel Cells  

Science Journals Connector (OSTI)

Wood Gas Processing To Generate Pure Hydrogen Suitable for PEM Fuel Cells ... A temperature profile along the three reactors was set, attempting to optimize the overall CO conversion rate. ... Low GHSV, low sulfur loads in the feed gas (see Table 7), and the approach of temperature optimization enabled high overall conversion rates. ...

Silvester Fail; Nicolas Diaz; Florian Benedikt; Michael Kraussler; Julian Hinteregger; Klaus Bosch; Marius Hackel; Reinhard Rauch; Hermann Hofbauer

2014-10-31T23:59:59.000Z

143

Temperature-controlled neutron reflectometry sample cell suitable for study of photoactive thin films  

E-Print Network [OSTI]

Temperature-controlled neutron reflectometry sample cell suitable for study of photoactive thin design intended for the study of photoactive materials using neutron reflectometry. The cell can maintain of that atom. More details on the technique of neutron reflectometry can be found elsewhere.2 Neutron

Barrett, Christopher

144

Antipatharian Diversity and Habitat Suitability Mapping in the Mesophotic Zone of the Northwestern Gulf of Mexico  

E-Print Network [OSTI]

. Habitat suitability models for the distribution of black coral species at selected banks in the northwestern Gulf of Mexico were generated. Presence-only models made using the MaxEnt modeling program were compared to presence-absence models made using...

Nuttall, Marissa F

2013-04-03T23:59:59.000Z

145

Oil and Gas CDT Are non-marine organic-rich shales suitable exploration  

E-Print Network [OSTI]

Oil and Gas CDT Are non-marine organic-rich shales suitable exploration targets? The University will receive 20 weeks residential training of broad relevance to the oil and gas industry: 10 weeks in Year 1 and also experienced oil and gas industry professionals. The supervisors at Oxford and Exeter have

Henderson, Gideon

146

1,4-Addition of Lithium Diisopropylamide to Unsaturated Esters: Role of Rate-Limiting Deaggregation, Autocatalysis,  

E-Print Network [OSTI]

1,4-Addition of Lithium Diisopropylamide to Unsaturated Esters: Role of Rate-Limiting Deaggregation, Autocatalysis, Lithium Chloride Catalysis, and Other Mixed Aggregation Effects Yun Ma, Alexander C. Hoepker.edu Abstract: Lithium diisopropylamide (LDA) in tetrahydrofuran at -78 ¬įC undergoes 1,4-addition

Collum, David B.

147

Algorithms and Applications for Spatial Data Mining Martin Ester, Hans-Peter Kriegel, Jrg Sander (University of Munich)  

E-Print Network [OSTI]

- 1 - Algorithms and Applications for Spatial Data Mining Martin Ester, Hans-Peter Kriegel, Jörg) for an overview of spatial data mining). Finding implicit reg- ularities, rules or patterns hidden in spatial for spatial data is more complex than for relational data. This applies to both the efficiency of algorithms

Kriegel, Hans-Peter

148

The influence of molecular structure of fatty acid monoalkyl esters on diesel combustion  

SciTech Connect (OSTI)

The subject of this paper is a series of experiments conducted on a single-cylinder research engine investigating the influence of molecular structure on the combustion behaviour of fatty acid alcohol ester (biodiesel) molecules under diesel engine conditions. The fuels employed in these experiments comprised various samples of pure individual fatty acid alcohol ester molecules of different structure, as well as several mixtures of such molecules. The latter consisted in biodiesel fuels produced by the transesterification of naturally occurring plant oils or animal fat with a monohydric alcohol. It was observed that the molecular structure of the fuel significantly influenced the formation of NO{sub x} and particulate matter and their respective concentration in the exhaust gas. The influence on the formation of NO{sub x} in particular, appeared to be exerted first through the effect which the molecular structure had on the auto-ignition delay occurring after the fuel was injected into the combustion chamber, and second through the flame temperature at which the various molecules burned. The emission of particulates on the other hand showed correlation with the number of double bonds in the fuel molecules for the case of larger accumulation mode particles, and with the boiling point of the fuel samples for the case of the smaller, nucleation mode particles. The effect of ignition delay on the exhaust emissions of these pollutants was isolated by adding the ignition promoting molecule 2-ethylhexyl nitrate to some of the fuel samples in closely specified concentrations, so as to equalise the ignition delay for the relevant fuel samples. The removal of the ignition delay as a main influence on the combustion process enabled the observation of the lesser effects of adiabatic flame temperature. (author)

Schoenborn, Alessandro; Ladommatos, Nicos [Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom); Williams, John; Allan, Robert; Rogerson, John [BP Oil UK Limited, Technology Centre, Whitchurch Hill, Pangbourne, Reading, RG8 7QR (United Kingdom)

2009-07-15T23:59:59.000Z

149

Effect of pressure on methylated glycine derivatives: relative roles of hydrogen bonds and steric repulsion of methyl groups  

Science Journals Connector (OSTI)

Phase transitions with fragmentation of the single crystals into fine powder were observed for partially methylated N-methyl and N,N-dimethylglycine, whereas the structural changes in N,N,N-trimethylglycine were continuous with some peculiar features in the 1.4-2.0 GPa pressure range, and accompanied by splitting of the crystals into several large fragments. Structural rearrangements in N-methylglycine and N,N,N-trimethylglycine were strongly dependent on the rate of pressure variation: the higher the rate of increasing pressure, the lower the pressure at which the phase transition occurred.

Kapustin, E.A.

2014-05-31T23:59:59.000Z

150

Environmental and age effects on methylation changes in human brain and blood cells  

E-Print Network [OSTI]

Previous studies have shown that DNA methylation may 1 e associated with disease, aging, the rate of aging and genetics. In this thesis, age is accurately predicted from DNA methylation in brain and blood tissues using two ...

Giguzinsky, Orit

2014-01-01T23:59:59.000Z

151

E-Print Network 3.0 - anhydride-vinyl methyl ether Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4-Methyl-2-pentanol Other secondary alcohols... - quire handling with precautions. Acrolein tert-Butyl methyl ether Di(1-propynl) ether n... Methoxy-1,3,5,7- cyclooctatetraene...

152

Mercury (Hg) and methyl mercury (MMHg) bioaccumulation in three fish species (sea food) from Persian Gulf  

Science Journals Connector (OSTI)

In this study, mercury (Hg) and methyl mercury (MMHg) were determined in three fish species including benthic, benthopelagic and pelagic fish from Arvand river, northwest of Persian Gulf. Mercury and methyl mercu...

Sajad Abdolvand; Sahar Kayedinejad EsfahaniÖ

2014-09-01T23:59:59.000Z

153

Cyclic chronopotentiometric studies of the LiAl anode in methyl acetate  

Science Journals Connector (OSTI)

The applicability of methyl acetate as a solvent for ambient temperature lithium secondary batteries was investigated using cyclic chronopotentiometry. Methyl acetate was found to be stable towards lithium-alumin...

Y. S. Fung; H. C. Lai

1989-03-01T23:59:59.000Z

154

Mercury Methylation by Planktonic and Biofilm Cultures of Desulfovibrio desulfuricans  

Science Journals Connector (OSTI)

Mercury Methylation by Planktonic and Biofilm Cultures of Desulfovibrio desulfuricans ... The similarity of the relationships in the presence and absence of a biofilm indicates that the existence of the biofilm does not appear to change the relative availability of the dominant mercuric sulfide species to SRB, which is consistent with our previous work with E. coli (18). ...

Chu-Ching Lin; Jennifer A. Jay

2007-09-01T23:59:59.000Z

155

Ultrafast photochemistry of methyl hydroperoxide on ice particles  

E-Print Network [OSTI]

Ultrafast photochemistry of methyl hydroperoxide on ice particles M. A. Kambouresa , S. AOOH, on water clusters produces a surprisingly wide range of products on a subpicosecond time scale | photodissociation Photoinduced processes at surfaces of water or ice are of interest in atmospheric chemistry

Nizkorodov, Sergey

156

Estimating Rooftop Suitability for PV: A Review of Methods, Patents, and Validation Techniques  

SciTech Connect (OSTI)

A number of methods have been developed using remote sensing data to estimate rooftop area suitable for the installation of photovoltaics (PV) at various geospatial resolutions. This report reviews the literature and patents on methods for estimating rooftop-area appropriate for PV, including constant-value methods, manual selection methods, and GIS-based methods. This report also presents NREL's proposed method for estimating suitable rooftop area for PV using Light Detection and Ranging (LiDAR) data in conjunction with a GIS model to predict areas with appropriate slope, orientation, and sunlight. NREL's method is validated against solar installation data from New Jersey, Colorado, and California to compare modeled results to actual on-the-ground measurements.

Melius, J.; Margolis, R.; Ong, S.

2013-12-01T23:59:59.000Z

157

The Presentation of a Suitable Model for Creating Knowledge Management in Educational Institutes (Higher Education)  

Science Journals Connector (OSTI)

The purpose of this article is to evaluate the status of higher education to establish knowledge management. The present study, with its descriptive model, investigates the situation in Islamic Azad University regarding organizational culture, information technology, organizational structure and human resources in order to establish a suitable model for knowledge management. The statistical population of this study includes all members of the board of education and the staff of the Islamic Azad University Tehran Central Branch. In order to analyze the research questions, the researcher made use of descriptive and inferential statistics. The findings of the research indicated that in the above-mentioned university, the situation of human resources is suitable, the status of organizational structure and culture is average and it is poor for that of information technology for the application of knowledge management. Finally, based on the research results, the executive model and the stages and steps of implementation of knowledge have been presented.

Seyeed farhad Eftekharzade; Batool mohammadi

2011-01-01T23:59:59.000Z

158

Phase 1 Methyl Iodide Deep-Bed Adsorption Tests  

SciTech Connect (OSTI)

Nuclear fission results in the production of fission products (FPs) and activation products including iodine-129, which could evolve into used fuel reprocessing facility off-gas systems, and could require off-gas control to limit air emissions to levels within acceptable emission limits. Research, demonstrations, and some reprocessing plant experience have indicated that diatomic iodine can be captured with efficiencies high enough to meet regulatory requirements. Research on the capture of organic iodides has also been performed, but to a lesser extent [Jubin 2012b]. Several questions remain open regarding the capture of iodine bound in organic compounds. Deep-bed methyl iodide adsorption testing has progressed according to a multi-laboratory methyl iodide adsorption test plan. This report summarizes the first phase of methyl iodide adsorption work performed according to this test plan using the deep-bed iodine adsorption test system at the Idaho National Laboratory (INL), performed during Fiscal Year (FY) 2013 and early FY-2014. Testing has been performed to address questions posed in the test plan, and followed the testing outline in the test plan. Tests established detection limits, developed procedures for sample analysis with minimal analytical interferences, and confirmed earlier results that show that the methyl iodide reacts when in contact with the AgZ sorbent, and not significantly in the gas flow upstream of the sorbent. The reaction(s) enable separation of the iodine from the organic moiety, so that the iodine can chemisorb onto the sorbent. The organic moiety can form other compounds, some of which are organic compounds that are detected and can be tentatively identified using GC-FID and GCMS. Test results also show that other gas constituents (NOx and/or H2O) can affect the methyl iodide reactions. With NOx and H2O present in the gas stream, the majority of uncaptured iodine exiting iodine-laden sorbent beds is in the form of I2 or HI, species that are soluble in NaOH scrubbing solution for iodine analysis. But when NOx and H2O are not present, then the majority of the uncaptured iodine exiting iodine-laden sorbent is in the form of methyl iodide. Methyl iodide adsorption efficiencies have been high enough so that initial DFs exceed 1,000 to 10,000. The methyl iodide mass transfer zone depths are estimated at 4-8 inches, possibly deeper than mass transfer zone depths estimated for I2 adsorption on AgZ. Additional deep-bed testing and analyses are recommended to (a) expand the data base for methyl iodide adsorption under various conditions specified in the methyl iodide test plan, and (b) provide more data for evaluating organic iodide reactions and reaction byproducts for different potential adsorption conditions.

Nick Soelberg; Tony Watson

2014-08-01T23:59:59.000Z

159

Suitability of Shape Memory Alloys for vibration isolation with application to launch vehicle payloads  

E-Print Network [OSTI]

of the requirements for the degree of MASTER OF SCIENCE December 2001 Major Subject; Aerospace Engineering SUITABILITY OF SHAPE iVIEMORY ALLOYS FOR VIBRATION ISOLA'I ION IVITH APPLICATION TO LAUNCH VEHICLE PAYLOADS A Thesis JOHN JERAMY MAYES Submitted to Texas... CHAPTER I IiUTRODUCTIOX Technology has advanced significantly in recent years, enabling significant increases in the performance of many types of devices while also allowing those devices to become smaller in size and mass. The advances in the dcsigri...

Mayes, John Jeramy

2012-06-07T23:59:59.000Z

160

Is linear response to x-rays suitable for digital dental x-ray imaging systems? óTheoretical and experimental considerations  

Science Journals Connector (OSTI)

The purpose of this study was to consider theoretically and experimentally the suitability of linear response to x-rays for digital dental x-ray imaging systems.

Keiichi Nishikawa PhD; Mamoru Wakoh DDS; PhD; Kinya Kuroyanagi DDS; PhD

2003-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Small-angle neutron scattering study of poly(methyl methacrylate-block-sodium acrylate-block-methyl methacrylate) and poly(sodium acrylate-block-methyl methacrylate-block-sodium acrylate) triblock copolymers in aqueous solutions  

Science Journals Connector (OSTI)

?Small-angle neutron scattering experiments were made on poly(methyl methacrylate-block-sodium acrylate-block-methyl methacrylate) [p(MMA-b-NaA-b-MMA)] and p(NaA-b-MMA-b...-NaA) solutions by varying the compositi...

Szabolcs Vass; Kristina Haimer; Gerhard MeierÖ

2002-03-01T23:59:59.000Z

162

Plug repairs of marine glass fiber / vinyl ester laminates subjected to in-plane shear stress or in-plane bending moment  

E-Print Network [OSTI]

Glass fiber / vinyl ester composite laminates represent an important class of modem fiber composites being proposed or used in state-of-the-art shipbuilding. This thesis examined the effectiveness of chopped strand mat ...

Urrutia Valenzuela, Roberto

2010-01-01T23:59:59.000Z

163

Nanoparticle Emissions from a Heavy-Duty Engine Running on Alternative Diesel Fuels  

Science Journals Connector (OSTI)

Nanoparticle Emissions from a Heavy-Duty Engine Running on Alternative Diesel Fuels ... Neat vegetable oils or animal fats are not suitable for high-speed diesel engines, and thus a transesterification process is required to produce fatty acid methyl esters (FAME). ... General trends in size distribution measurements are shown in Figure 1. ...

Juha Heikkilš; Annele Virtanen; Topi RŲnkkŲ; Jorma Keskinen; Pšivi Aakko-Saksa; Timo Murtonen

2009-11-16T23:59:59.000Z

164

Development of a Habitat Suitability Index Model for the Sage Sparrow on the Hanford Site  

SciTech Connect (OSTI)

Mitigation threshold guidelines for the Hanford Site are based on habitat requirements of the sage sparrow (Amphispiza belli) and only apply to areas with a mature sagebrush (Artemisia tridentata) overstory and a native understory. The sage sparrow habitat requirements are based on literature values and are not specific to the Hanford Site. To refine these guidelines for the Site, a multi-year study was undertaken to quantify habitat characteristics of sage sparrow territories. These characteristics were then used to develop a habitat suitability index (HSI) model which can be used to estimate the habitat value of specific locations on the Site.

Duberstein, Corey A.; Simmons, Mary Ann; Sackschewsky, Michael R.; Becker, James M.

2008-01-01T23:59:59.000Z

165

Global methylation responses to low dose radiation exposure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

methylation responses to low dose radiation exposure methylation responses to low dose radiation exposure Pamela J Sykes, Michelle R Newman, Benjamin J Blyth and Rebecca J Ormsby Haematology and Genetic Pathology, Flinders University and Medical Centre, Flinders Centre for Cancer Prevention and Control, Bedford Park, Adelaide, South Australia 5042 Australia. (pam.sykes@flinders.edu.au). Our goal is to study the mechanisms involved in biological responses to low doses of radiation in vivo in the dose range that is relevant to population and occupational exposures. At high radiation doses, DNA double-strand breaks are considered the critical lesion underlying the initiation of radiation-induced carcinogenesis. However, at the very low radiation doses relevant for the general public, the induction of DNA double-strand breaks

166

Occurrence of Methyl Triclosan, a Transformation Product of the Bactericide Triclosan, in Fish from Various Lakes in Switzerland  

Science Journals Connector (OSTI)

Occurrence of Methyl Triclosan, a Transformation Product of the Bactericide Triclosan, in Fish from Various Lakes in Switzerland ... The bactericide triclosan and methyl triclosan, an environmental transformation product thereof, have been previously detected in lakes and a river in Switzerland. ... Both compounds are emitted via wastewater treatment plants (WWTPs), with methyl triclosan probably being formed by biological methylation. ...

Marianne E. Balmer; Thomas Poiger; Christian Droz; Kathrin Romanin; Per-Anders Bergqvist; Markus D. MŁller; Hans-Rudolf Buser

2003-12-06T23:59:59.000Z

167

Role of methyl nitrate in plasma exhaust treatment  

SciTech Connect (OSTI)

There is growing interest in the use of a nonthermal plasma combined with a catalyst for NO{sub x} removal from diesel engine exhaust streams. Such exhaust streams contain excess oxygen (typically 6--10%), low concentrations of hydrocarbons (typically 100--1,000 ppm), and significant concentrations of water (typically 5--12%). Conversion of NO{sub x} to environmentally acceptable compounds, without requiring a scrubber or an added reductant, is the desired end result. In their research the authors observe the formation of substantial amounts of methyl nitrate (CH{sub 3}ONO{sub 2}) in the plasma-catalyst system. CH{sub 3}ONO{sub 2} was prepared and added to the gas blend on test equipment simulating a diesel exhaust gas. A dielectric barrier plasma discharge was followed by a zeolite-based catalyst. Methyl nitrate introduced upstream of the plasma discharge is largely unreacted upon passing through the plasma. CH{sub 3}ONO{sub 2} arriving at the catalyst is converted to methanol and NO{sub 2}. While methyl nitrate was shown to be formed in this system, it is not a significant intermediate in the mechanism of conversion of NO{sub x} to nitrogen.

Hoard, J.W.; Wallington, T.J.; Ball, J.C.; Hurley, M.D.; Wodzisz, K.; Balmer, M.L.

1999-10-01T23:59:59.000Z

168

GPS Visitor Tracking and Recreation Suitability Mapping: Tools for understanding and managing visitor use  

Science Journals Connector (OSTI)

Abstract Understanding space in parks and protected areas is becoming more important as recreation and other uses in these areas change and increase. Spatial demand and space utility are of particular importance to multiple-use forests, which may have competing demands and limited acreage. For managers to balance the demands of society, maintain healthy ecosystems, and generate revenue these demands must be integrated on some level. Spatial data and analysis can help with integration; however, social science data can be difficult to integrate into spatial modeling and analysis. This study examined the integration of two mapping methods that can assist in the incorporation of social science data into spatial models: Recreation Suitability Mapping (RSM) and GPS Visitor Tracking (GVT). Visitor use preferences were spatially mapped to create recreation suitability models for competing recreation activity groups, and GPS tracking of visitor use was used to compare and contrast actual user patterns with mapped preferences. Combining RSM and GVT proved useful for informing visitor management in a small acreage, multi-use public forest experiencing high spatial demand. Theoretical, methodological, and practical implications are discussed.

J. Adam Beeco; Jeffrey C. Hallo; Matthew T.J. Brownlee

2014-01-01T23:59:59.000Z

169

An electrochemical method suitable for preparing nine metal-nitride powders  

SciTech Connect (OSTI)

We present an electrochemical method that is suitable for the preparation of metal-nitride ceramic materials that is both simple and general. We begin with a single-compartment electrochemical cell containing suitable metal (M) anodes and cathodes (M=Al, Mo, Nb, Ni, Ti, V, W, Zn, or Zr) and a NH{sub 3}/NH{sub 4}X (X=Br or Cl) electrolyte solution. Application of a sufficiently high voltage results in oxidation and dissolution of M to M{sup n+} at the anode and reduction of NH{sub 3} to NH{sub 2}- at the cathode. When M=Al, this results in formation of an insoluble inorganic polymer, which can subsequently be calcined above 600{degrees}C to yield phase-pure AlN. For some of the other metals, a simple ammoniated metal ion is formed at the anode, but calcination of this material also leads to the corresponding metal nitride. The phases and morphologies of the powders depends strongly on the calcining conditions. The important point is that this method is general for the preparation of metal-nitride powders even though the pathway that leads to the powders is metal-dependent. This talk will focus primarily on the preparation of AlN, which is an important packaging material for the electronics industry, and NbN, which is a superconductor (T{sub c}{approximately}17 K) with important technological applications.

Wade, T.; Crooks, R.M. [Texas A& M Univ., College Station, TX (United States)

1995-12-31T23:59:59.000Z

170

Phonon lifetime in SiSn and its suitability for hot-carrier solar cells  

SciTech Connect (OSTI)

We present a phononic and electronic study of SiSn in the zinc-blende phase. A detailed description of the longitudinal optical (LO) phonon decay in a three-phonon process is presented together with the corresponding lifetime. The necessity to go beyond the zone center phonon approximation in this case is highlighted as it reveals a steep dependence of the lifetime on the initial phonon wavenumber, which differs from usual semiconductors. The electronic band structure is calculated within the GW formalism and shows a small direct band gap. It is shown that the LO-phonon resulting from electron cooling has a lifetime four to eight orders of magnitude above all the known value in semiconductors for this process. We finally show the suitability of SiSn for hot-carrier solar cells, as it is endowed with ultra-slow cooling of hot carriers.

Levard, Hugo; Laribi, Sana; Guillemoles, Jean-FranÁois [Institute for Research and Development on Photovoltaic Energy (IRDEP), UMR 7174, EDF R and D/CNRS/Chimie ParisTech, 6 quai Watier, 78401 Chatou (France)

2014-06-02T23:59:59.000Z

171

Agrochemicals suitable for downy mildew control in New Zealand boysenberry production  

Science Journals Connector (OSTI)

The effectiveness of different agrochemical treatments for downy mildew control in boysenberry was evaluated in situ during the 2000/01 and 2001/02 growing seasons in New Zealand. Agrochemicals tested were azoxystrobin, dichlofluanid, phosphorus acid, metalaxyl-M (metalaxyl-M+dithianon and/or metalaxyl-M+mancozeb). Agrochemical treatments consisted of single or multiple applications integrated into a commercial spray programme. Downy mildew was assessed for primocane, leaf and/or berry infections (Ďdryberryí). Disease pressure was very different in the two seasons, with growers experiencing small losses (agrochemicals suitable for downy mildew control during low and high disease pressure, but also opened questions with regard to our current understanding of the disease cycle and pathways of infection.

M. Walter; P. Harris-Virgin; W. Thomas; G. Tate; N.W. Waipara; G. Langford

2004-01-01T23:59:59.000Z

172

"Seeing" Mercury Methylation in Progress  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mercury in the environment can easily reach toxic levels. In a process called methylation, Hg is transformed into a form that can be accumulated in the muscle and fatty tissue of fish. Accumulated levels of methylmercury become higher as the fish grow, and levels are magnified up the food web as larger fish eat smaller fish, a process called biomagnification. As a result, mercury concentrations in fish can be millions of times higher than in surrounding waters [1]. Fish advisories have been set to limit consumption of certain fish higher up on the food web, especially for pregnant women and small children (see Figure 1). Mercury in the environment can easily reach toxic levels. In a process called methylation, Hg is transformed into a form that can be accumulated in the muscle and fatty tissue of fish. Accumulated levels of methylmercury become higher as the fish grow, and levels are magnified up the food web as larger fish eat smaller fish, a process called biomagnification. As a result, mercury concentrations in fish can be millions of times higher than in surrounding waters [1]. Fish advisories have been set to limit consumption of certain fish higher up on the food web, especially for pregnant women and small children (see Figure 1). figure 1 Figure 1. Mercury health risks Health advisory from the CALFED Science Program to limit consumption of fish, in order to avoid excessive accumulation of Hg. Methylated Hg is biomagnified up the food chain, attaining high levels in some types of sportfish. http://science.calwater.ca.gov/images/scinews_hg_da_lg.jpg

173

Asymmetric synthesis of both enantiomers of esters and ?-lactones from optically active 1-chlorovinyl p-tolyl sulfoxides and lithium ester enolates with the formation of a tertiary or a quaternary carbon stereogenic center at the ?-position  

Science Journals Connector (OSTI)

Treatment of optically active 1-chlorovinyl p-tolyl sulfoxides having two different substituents at the 2-position, which were synthesized from aldehydes or unsymmetrical ketones and (R)-(?)-chloromethyl p-tolyl sulfoxide in two or three steps, with the lithium enolate of tert-butyl acetate gave optically active adducts in 99% chiral induction from the sulfur stereogenic center. The adducts were converted to optically active esters, carboxylic acids, and ?-lactones, which have a tertiary or a quaternary carbon stereogenic center at the ?-position. A synthesis of optically active spiro-lactones was realized starting from 2-cyclohexenone by this method.

Shimpei Sugiyama; Tsuyoshi Satoh

2005-01-01T23:59:59.000Z

174

Protein arginine methyltransferase 1 regulates herpes simplex virus replication through ICP27 RGG-box methylation  

SciTech Connect (OSTI)

Protein arginine methylation is involved in viral infection and replication through the modulation of diverse cellular processes including RNA metabolism, cytokine signaling, and subcellular localization. It has been suggested previously that the protein arginine methylation of the RGG-box of ICP27 is required for herpes simplex virus type-1 (HSV-1) viral replication and gene expression in vivo. However, a cellular mediator for this process has not yet been identified. In our current study, we show that the protein arginine methyltransferase 1 (PRMT1) is a cellular mediator of the arginine methylation of ICP27 RGG-box. We generated arginine substitution mutants in this domain and examined which arginine residues are required for methylation by PRMT1. R138, R148 and R150 were found to be the major sites of this methylation but additional arginine residues serving as minor methylation sites are still required to sustain the fully methylated form of ICP27 RGG. We also demonstrate that the nuclear foci-like structure formation, SRPK interactions, and RNA-binding activity of ICP27 are modulated by the arginine methylation of the ICP27 RGG-box. Furthermore, HSV-1 replication is inhibited by hypomethylation of this domain resulting from the use of general PRMT inhibitors or arginine mutations. Our data thus suggest that the PRMT1 plays a key role as a cellular regulator of HSV-1 replication through ICP27 RGG-box methylation.

Yu, Jungeun; Shin, Bongjin; Park, Eui-Soon; Yang, Sujeong; Choi, Seunga [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of) [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of); BK21 Bio Brain Center, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of); Kang, Misun [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of)] [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of); Rho, Jaerang, E-mail: jrrho@cnu.ac.kr [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of) [Department of Microbiology, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of); BK21 Bio Brain Center, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of); GRAST, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764 (Korea, Republic of)

2010-01-01T23:59:59.000Z

175

E-Print Network 3.0 - arginine methylated miwi Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2005 IEEE Intrinsic Disorder and Protein Modifications Summary: studies methylated proteins and describes methods of building a predictor for arginine and lysine... arginine...

176

Structures, intermolecular rotation barriers, and thermodynamic properties of chlorinated methanols and chlorinated methyl hydroperoxides.  

E-Print Network [OSTI]

??Thermochemical property data on chlorinated methanols and methyl hydroperoxides are important in oxidation, combustion and atmospheric photochemistry of chlorocarbons, Enthalpy, entropy, and heat capacities areÖ (more)

Sun, Hongyan

2000-01-01T23:59:59.000Z

177

Pressure dependence of tunneling and librational modes of coupled methyl groups in lithium acetate  

Science Journals Connector (OSTI)

The pressure dependence of the tunneling and librational modes of the coupled methyl groups in lithium acetate dihydrate was studied by inelastic neutron scattering...

A. Heidemann; J. Eckert; L. PassellÖ

1987-01-01T23:59:59.000Z

178

Tunneling of coupled methyl groups in lithium acetate: The isotope effect  

Science Journals Connector (OSTI)

We studied by high resolution inelastic neutron scattering the isotope effect of tunneling of coupled methyl groups in lithium acetate dihydrate (LIAC). Fully protonated, fully...

A. Heidemann; H. Friedrich; E. GŁntherÖ

1989-01-01T23:59:59.000Z

179

A study of transportation factors affecting the suitability of Houston, Texas, as a wool scouring plant site  

E-Print Network [OSTI]

A STUDY OF TRANSPORTATION FACTORS AFFECTING THE SUITABILITY OF HOUSTON, TEXAS AS A WOOL SCOURING PLANT SITE A Thesis By Hoy A. Richards Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial... fulfillment of the requirements for the degree MASTER OF SCIENCE May 1961 Ma)or Sub)ect Economi. cs A STUDY OF TRANSPORTATION FACTORS AFFECTING THE SUITABILITY OF HOUSTON, TEXAS AS A WOOL SCOURING PLANT SITE A Thesis By Hoy A. Richards Approved...

Richards, Hoy Andrew

2012-06-07T23:59:59.000Z

180

GIS-based study of the spatial distribution suitability of livestock and poultry farming: The case of Putian, Fujian, China  

Science Journals Connector (OSTI)

Abstract Spatial distribution, based on which the spatial layout and scale for regional livestock and poultry farming are determined, is critical to planning. At present, quantitative research on this topic is rare in China and even elsewhere. To assist in rational planning as well as in the scientific layout of the spatial distribution of livestock and poultry farms, this study establishes an evaluation index system for the spatial distribution suitability of the livestock and poultry sector and adopts Delphi method and analytic hierarchy process (AHP) to standardize each evaluation factor that affects the suitable spatial layout of livestock and poultry farming and consequently, to assign weights. The system is based on theory of land suitability; the organic combination of social, economic, and environmental factors; and geographic information system technology. GIS software is employed to generate the thematic maps of a single evaluation factor. The score of each block of livestock farming land suitability evaluation is then generated based on the results of the suitability analysis for a single factor along with the weighted calculation result of the weight of each evaluation factor and the application of the GIS overlay function. Results show that regardless of the size or proportion of areas suitable for livestock and poultry farming, Xianyou County and Hanjiang District remain suitable for livestock and poultry breeding layout; quantity distribution should give priority to these two areas as well. Recommendations to adjust spatial layout planning for livestock and poultry farming in Putian, Xianyou County, must be improved. The north and northwest areas should be considered in the layout for livestock and poultry farming. Planning for Hanjiang District should be readjusted, and priority should be given to Zhuangbian Town, Dayang Village, Xinxian Town, and Jiangkou Town. Chengxiang and Licheng Districts are relatively ideal and require only appropriate fine tuning. Planning for Xiuyu District should be readjusted, and priority should be given to suitable villages and towns, such as Dongqiao Town, Hushi Town, and Dongzhuang Town.

Lihong Peng; Wenwen Chen; Ming Li; Yu Bai; Yipeng Pan

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Sub-millimeter sized methyl butanoate droplet combustion: Microgravity experiments  

E-Print Network [OSTI]

1. Introduction Biodiesel is a renewable fuel source suitable for use within the current transport of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA b Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA Available online 5 September

Walter, M.Todd

182

A web-based participatory GIS (PGIS) for offshore wind farm suitability within Lake Erie, Ohio  

Science Journals Connector (OSTI)

Abstract This study presents the design and implementation of a web-based Participatory Geographic Information System (PGIS) framework intended for offshore wind suitability analysis. The PGIS prototype presented here integrates GIS and decision-making tools that are intended to involve different stakeholders and the public for solving complex planning problems and building consensus. Public involvement from the early planning stage of projects with a spatial nature is very important for future legitimacy and acceptance of these projects. Therefore, developing and executing a system that facilitates effective public involvement for resolving contentious issues can help in fostering long-lasting agreements. The prototype here is a distributed and asynchronous PGIS that combines a discussion forum, a mapping tool and a decision tool. The potential strengths and benefits of this PGIS are demonstrated in a hypothetical case study in Lake Erie, northern Ohio. In the hypothetical case study, participants evaluate the importance of three decision alternatives using different evaluation criteria for expressing their individual preferences. The individual preferences are aggregated by Borda Count (BC) method for generating the group solution, which is used for synthesizing the different evaluation aspects such as the importance of criteria, ranking of the decision alternatives and planning issues related to environmental and socio-economic concerns from the participants.

Addisu D. Mekonnen; Pece V. Gorsevski

2015-01-01T23:59:59.000Z

183

Search for Suitable ICRF Operation Window for the Shaped H-mode Operation of KSTAR  

SciTech Connect (OSTI)

KSTAR will try to achieve its 1st shaped H-mode plasma in 2010 campaign. The available power is limited by our plan for auxiliary heating system. Up to 2010, NBI with 1 MW, LHCD 0.5 MW, and ECH with 0.5 MW power will be prepared. To accomplish high beta plasma, TF magnetic field will be reduced to 2 T from rated field of 3.5 T. In this case the ECH contribution to H-mode power threshold requirement is ignorant because the 84 GHz frequency does not meet neither fundamental nor second harmonic resonance in the discharge area. Therefore the ICRF heating should carry out important roll to reach power threshold. The ICRF system of tunable frequency from 30 to 60 MHz will come with 1 MW power in 2010. To maximize the ICRF heating efficiency for H-mode purpose, we try to find suitable condition of ICRF heating parameters through the simulation using by TORIC code. Optimizations of RF frequency, toroidal modes controllable by 4 current straps, and the minority concentration are performed. Possibilities of second harmonic heating of minority and the mode converted heating near resonance layer are also studied.

Park, B. H.; Kim, J. Y. [National Fusion Research Institute, Gwahangno 113, Yusung-gu, Daejeon 305-333 (Korea, Republic of)

2009-11-26T23:59:59.000Z

184

Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II  

SciTech Connect (OSTI)

This report serves as the final technical report and users manual for the 'Rigorous Screening Technology for Identifying Suitable CO2 Storage Sites II SBIR project. Advanced Resources International has developed a screening tool by which users can technically screen, assess the storage capacity and quantify the costs of CO2 storage in four types of CO2 storage reservoirs. These include CO2-enhanced oil recovery reservoirs, depleted oil and gas fields (non-enhanced oil recovery candidates), deep coal seems that are amenable to CO2-enhanced methane recovery, and saline reservoirs. The screening function assessed whether the reservoir could likely serve as a safe, long-term CO2 storage reservoir. The storage capacity assessment uses rigorous reservoir simulation models to determine the timing, ultimate storage capacity, and potential for enhanced hydrocarbon recovery. Finally, the economic assessment function determines both the field-level and pipeline (transportation) costs for CO2 sequestration in a given reservoir. The screening tool has been peer reviewed at an Electrical Power Research Institute (EPRI) technical meeting in March 2009. A number of useful observations and recommendations emerged from the Workshop on the costs of CO2 transport and storage that could be readily incorporated into a commercial version of the Screening Tool in a Phase III SBIR.

George J. Koperna Jr.; Vello A. Kuuskraa; David E. Riestenberg; Aiysha Sultana; Tyler Van Leeuwen

2009-06-01T23:59:59.000Z

185

Suitability of Tedlarģ gas sampling bags for siloxane quantification in landfill gas  

Science Journals Connector (OSTI)

Landfill or digester gas can contain man-made volatile methylsiloxanes (VMS), usually in the range of a few milligrams per normal cubic metre (Nm3). Until now, no standard method for siloxane quantification exists and there is controversy with respect to which sampling procedure is most suitable. This paper presents an analytical and a sampling procedure for the quantification of common VMS in biogas via GCĖMS and polyvinyl fluoride (Tedlarģ) bags. Two commercially available Tedlar bag models are studied. One is equipped with a polypropylene valve with integrated septum, the other with a dual port fitting made from stainless steel. Siloxane recovery in landfill gas samples is investigated as a function of storage time, temperature, surface-to-volume ratio and background gas. Recovery was found to depend on the type of fitting employed. The siloxanes sampled in the bag with the polypropylene valve show high and stable recovery, even after more than 30 days. Sufficiently low detection limits below 10†?g†Nm?3 and good reproducibility can be achieved. The method is therefore well applicable to biogas, greatly facilitating sampling in comparison with other common techniques involving siloxane enrichment using sorption media.

M. Ajhar; B. Wens; K.H. Stollenwerk; G. Spalding; S. YŁce; T. Melin

2010-01-01T23:59:59.000Z

186

Strategic selection of suitable projects for hybrid solar-wind power generation systems  

Science Journals Connector (OSTI)

Because of the pressing need for maintaining a healthy environment with reasonable costs, China is moving toward the trend for generating electricity from renewable resources. Both solar energy and wind power have received a tremendous attention from private associations, political groups, and electric power companies to generate power on a large scale. A drawback is their unpredictable nature and dependence on weather. Fortunately, the problems can be partially tackled by using the strengths of one source to overcome the weakness of the other. Especially, a large fraction of the solar resource is available at times of peak electrical load. However, the complexity of using two different resources together makes the hybrid solar-wind generation systems more difficult to analyze. Accordingly, this paper first briefly introduces the solar-wind generation system and next develops its critical success criteria. Then, a fuzzy analytic hierarchy process associated with benefits, opportunities, costs and risks, is proposed to help select a suitable solar-wind power generation project.

Hsing Hung Chen; He-Yau Kang; Amy H.I. Lee

2010-01-01T23:59:59.000Z

187

Biodegradation of triclosan and formation of methyl-triclosan in activated sludge under aerobic conditions  

E-Print Network [OSTI]

Biodegradation of triclosan and formation of methyl-triclosan in activated sludge under aerobic Keywords: Triclosan Triclosan methyl Waste water treatment Aerobic transformation a b s t r a c t Triclosan of this compound has led to the elevated concentrations of triclosan in wastewater, wastewater treatment plants

Kolaei, Alireza Rezania

188

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance of anaerobes  

E-Print Network [OSTI]

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance Keywords: Methylmercury Oxygen minimum zone Arabian Sea Equatorial Eastern Pacific Mercury methylation Although a large fraction of the world's population is exposed to mercury through consumption of marine

Morel, François M. M.

189

Genome Sequence of Mercury-Methylating and Pleomorphic Desulfovibrio africanus strain Walvis Bay  

SciTech Connect (OSTI)

Desulfovibrio africanus strain Walvis Bay is an anaerobic sulfate-reducing bacterium capable of producing methylmercury (MeHg), a potent human neurotoxin. The mechanism of methylation by this and other organisms is unknown. We present the 4.2-Mb genome sequence to provide further insight into microbial mercury methylation and sulfate-reducing bacteria.

Brown, Steven D [ORNL; Wall, Judy D. [University of Missouri; Kucken, A M [University of Missouri, Columbia; Gilmour, C C [Smithsonian Environmental Research Center, Edgewater, MD; Podar, Mircea [ORNL; Brandt, Craig C [ORNL; Teshima, Hazuki [Los Alamos National Laboratory (LANL); Detter, J C [U.S. Department of Energy, Joint Genome Institute; Han, Cliff [Los Alamos National Laboratory (LANL); Land, Miriam L [ORNL; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Han, James [U.S. Department of Energy, Joint Genome Institute; Pennacchio, Len [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Pitluck, Samual [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [ORNL; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Palumbo, Anthony Vito [ORNL; Elias, Dwayne A [ORNL

2011-01-01T23:59:59.000Z

190

Characterization of the Deltaproteobacteria in contaminated and uncontaminated stream sediments and identification of potential mercury methylators  

SciTech Connect (OSTI)

Microbial communities were examined in surface stream sediments at 5 contaminated sites and 1 control site near Oak Ridge, TN, USA, to identify bacteria that could be contributing to mercury (Hg) methylation. The phylogenetic composition of the sediment bacterial community was examined over 3 quarterly sampling periods (36 samples) using 16S rRNA gene pyrosequencing. Only 3064 sequences (0.85% of the total community) were identified as Deltaproteobacteria, the only group known to methylate Hg, using the Ribosomal Database Project classifier at the 99% confidence threshold. Constrained ordination techniques indicated statistically significant positive linear correlations between Desulfobulbus spp., Desulfonema spp. and Desulfobacca spp. and methyl-Hg concentrations at the Hg-contaminated sites. In contrast, the distribution of organisms related to Byssovorax spp. was significantly correlated to inorganic carbon, nitrate and uranium concentrations but not to Hg or methyl-Hg. Overall, the abundance and richness of Deltaproteobacteria sequences were higher in uncontaminated sediments, while the majority of the members present at the contaminated sites were either known potential metal-reducers/methylators or metal tolerant species. Given the abundance relative to other known Hg methylators and the association with methyl-Hg, Desulfobulbus spp. is considered a prime candidate for involvement in Hg methylation in these streams.

Mosher, Jennifer [ORNL; Vishnivetskaya, Tatiana A [ORNL; Elias, Dwayne A [ORNL; Podar, Mircea [ORNL; Brooks, Scott C [ORNL; Brown, Steven D [ORNL; Brandt, Craig C [ORNL; Palumbo, Anthony Vito [ORNL

2012-01-01T23:59:59.000Z

191

-methyl-adenine: an epigenetic signal for DNA-protein interactions Didier Wion 1  

E-Print Network [OSTI]

, and pathogenic E. coli, Dam methylation is required for virulence. In - Proteobacteria, CcrM methylation, and has attracted ample interest because of its involvement in human disease 8 . In contrast 9 and alters DNA curvature 10 . Such structural effects can influence DNA-protein interactions

Boyer, Edmond

192

Epigenetic regulation, such as cy-tosine DNA methylation, is im-  

E-Print Network [OSTI]

The project mapped 100,000 synthetic RRBS reads from human chr21 directly to the fragments using RRBSProject 4 Epigenetic regulation, such as cy- tosine DNA methylation, is im- portant in gene regulation. Precise measurements of genome-wide DNA methylation at single-base resolution have only recently

Wang, Hsin-Min

193

et al. (2008) identified several additional methylation sites on FOXO1 that ap-  

E-Print Network [OSTI]

, it remains to be deter- mined how methylation alters the activity and posttranslational regulation. In this light, methylation could, therefore, play a very general role in the regulation of FOXO1 activity serve as a link between aging and age-related diseases such as diabe- tes and cancer. FOXO dysregulation

Hertel, Klemens J.

194

M3D: a kernel-based test for spatially correlated changes in methylation profiles  

Science Journals Connector (OSTI)

......properly cited. M3D: a kernel-based test for spatially correlated changes in methylation...shape, across pre-defined regions. The test statistic explicitly accounts for differences...analysis of methylation data. Empirical tests on real and simulated data sets show an......

Tom Mayo; Gabriele Schweikert; Guido Sanguinetti

2014-11-01T23:59:59.000Z

195

Sorption/Desorption Kinetics and Equilibria of Atrazine, Diuron, And Bensulfuron Methyl on Selected Soils  

E-Print Network [OSTI]

Sorption/Desorption Kinetics and Equilibria of Atrazine, Diuron, And Bensulfuron Methyl on Selected Soils M. Zhou, R. K. Trubey, T. M. Priester and T. H. Carski Sorption/desorption isotherm equilibria to diuron and bensulfuron methyl sorption. The low l/nd (isotherm slope for desorption) values showed

Sparks, Donald L.

196

NEUTRON SCATTERING STUDY OF METHYL GROUP ROTATION IN SOLID PARA-AZOXYANISOLE (PAA)  

E-Print Network [OSTI]

587 NEUTRON SCATTERING STUDY OF METHYL GROUP ROTATION IN SOLID PARA-AZOXYANISOLE (PAA) H. HERVET diffusion incohérente de neutrons, que dans le PAA solide les groupes méthyle sont animés d'un mouvement de that the methyl groups in solid PAA undergo random rotational motion around their three-fold axis

Paris-Sud XI, Université de

197

Cell-free synthesis system suitable for disulfide-containing proteins  

SciTech Connect (OSTI)

Highlights: ? Cell-free synthesis system suitable for disulfide-containing proteins is proposed. ? Disulfide bond formation was facilitated by the use of glutathione buffer. ? DsbC catalyzed the efficient shuffling of incorrectly formed disulfide bonds. ? Milligram quantities of functional {sup 15}N-labeled BPTI and lysozyme C were obtained. ? Synthesized proteins were both catalytically functional and properly folded. -- Abstract: Many important therapeutic targets are secreted proteins with multiple disulfide bonds, such as antibodies, cytokines, hormones, and proteases. The preparation of these proteins for structural and functional analyses using cell-based expression systems still suffers from several issues, such as inefficiency, low yield, and difficulty in stable-isotope labeling. The cell-free (or in vitro) protein synthesis system has become a useful protein production method. The openness of the cell-free system allows direct control of the reaction environment to promote protein folding, making it well suited for the synthesis of disulfide-containing proteins. In this study, we developed the Escherichia coli (E. coli) cell lysate-based cell-free synthesis system for disulfide-containing proteins, which can produce sufficient amounts of functional proteins for NMR analyses. Disulfide bond formation was facilitated by the use of glutathione buffer. In addition, disulfide isomerase, DsbC, catalyzed the efficient shuffling of incorrectly formed disulfide bonds during the protein synthesis reaction. We successfully synthesized milligram quantities of functional {sup 15}N-labeled higher eukaryotic proteins, bovine pancreatic trypsin inhibitor (BPTI) and human lysozyme C (LYZ). The NMR spectra and functional analyses indicated that the synthesized proteins are both catalytically functional and properly folded. Thus, the cell-free system is useful for the synthesis of disulfide-containing proteins for structural and functional analyses.

Matsuda, Takayoshi [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan) [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan); Cell-Free Technology Application Laboratory, RIKEN Innovation Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan); Watanabe, Satoru [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan)] [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan); Kigawa, Takanori, E-mail: kigawa@riken.jp [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan) [NMR Pipeline Methodology Team, RIKEN Systems and Structural Biology Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan); Cell-Free Technology Application Laboratory, RIKEN Innovation Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045 (Japan); Department of Computational Intelligence and Systems Science, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8502 (Japan)

2013-02-08T23:59:59.000Z

198

Geographic market suitability analysis for low- and intermediate-temperature solar IPH systems  

SciTech Connect (OSTI)

Previous studies of the industrial market for solar energy systems have considered the level of solar radiation as the main determinant of geographic markets in the US. This study evaluates geographical markets extensively based on such criteria as output of different types of low- and intermediate-temperature solar thermal collectors, air quality constraints for competitive fuels, state solar tax incentives, fuel costs, low industrial use of coal, high industrial growth areas, and industry energy consumption in different parts of the US. Market suitability analysis and mapping techniques, refined in the past 20 years by land use planners, were used to evaluate geographical markets. A computer-aided system, Generalized Map Analysis Planning System (GMAPS), performed interactive, cellular, computer mapping, and composite mapping. Results indicate that the US Southwest and West are the most attractive geographical markets for solar IPH, based on an equal weighting of the evaluation criteria. The West North-Central and East South-Central regions appear to have the least attractive markets. Specific areas within states where solar IPH systems have distinct marketing advantages also are apparent from the composite maps. However, when different weights are assigned to the various criteria, the results change significantly for some regions of the country, such as the New England, Mid-Atlantic, and West South-Central 2 regions. The results of this work will become less valid in the future as state incentives for solar IPH, air quality regulations, and the status of competitive fuels all change. Volume I contains study results and maps.

Turner, A.K.; Weber, J.C.; DeAngelis, M.

1981-12-01T23:59:59.000Z

199

Stereoselective SN2? alkylation reaction sequence of the ?,?-epoxy ?,?-unsaturated ester system via ?,?-chlorohydrin intermediates by the use of a R3AlĖCuCN reagent  

Science Journals Connector (OSTI)

A novel stereoselective SN2? alkylation reaction sequence of the ?,?-epoxy ?,?-unsaturated ester system has been developed which involves a regioselective substitution reaction with chloride ions at the ?-position and a subsequent SN2? alkylation reaction of the resulting ?-chloro-?-hydroxy derivatives with a R3AlĖCuCN reagent. The new methodology was demonstrated to be applicable to a variety of substrates and to provide various ?-hydroxy-?-alkyl-?,?-unsaturated esters including those bearing a quaternary asymmetric carbon atom at the ?-position in a highly stereoselective manner and high yields.

Fumihiko Yoshimura; Atsushi Matsui; Atsushi Hirai; Keiji Tanino; Masaaki Miyashita

2009-01-01T23:59:59.000Z

200

In vitro regulation of porcine Leydig cell steroidogenesis by insulin-like growth factor I (IGF-I) and the phorbol ester 12-myristate-13- acetate (PMA)  

E-Print Network [OSTI]

IN VITRO REGULATION OP PORCINE LEYDIG CELL STEROIDOGENESIS BY INSULIN-LIKE GROWTH FACTOR I (IGF-I) AND THE PHORBOL ESTER 12-MYRISTATE-13-ACETATE (PMA) A Thesis by JOSEPH THOMAS FRENCH Submitted to the Graduate College of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1988 Major Subject: Physiology of Reproduction IN VITRO REGULATION OF PORCINE LEYDIG CELL STEROIDOGENESIS BY INSULIN-LIKE GROWTH FACTOR I (IGF-I) AND THE PHORBOL ESTER...

French, Joseph Thomas

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Study of degumming process and evaluation of oxidative stability of methyl and ethyl biodiesel of Jatropha curcas L. oil from three different Brazilian states  

Science Journals Connector (OSTI)

Abstract This work describes the production of biodiesel from Jatropha curcas oil. The kernel samples provided by Embrapa-PI, were first crushed in a blender and then subjected to extraction with hexane. The oil yield was between 54.71†Ī†0.47 and 64.16†Ī†2.88%. The J.†curcas oil was then submitted to two different kinds of degumming, first with water and second with H3PO4 to evaluate the influence of these processes in the yield of the transesterification reaction. Methyl and ethyl biodiesel prepared from the degummed oil with H3PO4 had higher conversions than those prepared with the degummed with water. Therefore, among the processes of degumming studied, H3PO4 was more suitable for the treatment of J.†curcas oil. The study shows the results about oxidation stability were good, because the biodiesels methyl and ethyl biodiesel have induction period at 13.51†h and 13.03†h without antioxidant addition when submitted a Rancimat text. Such biodiesels had their physicochemical parameters defined under the specifications of ANP Resolutions nį 14/2012 (ANP- National Agency of Petroleum, Natural Gas and Biofuels from Brazil). The results showed that J.†curcas cultivation in Brazil is an adequate source for biodiesel production, considering the technical standards available.

Francisca Diana da Silva Araķjo; Iranildo C. Araķjo; Isabella Cristhina G. Costa; Carla VerŰnica Rodarte de Moura; Mariana H. Chaves; EugÍnio Celso E. Araķjo

2014-01-01T23:59:59.000Z

202

THE JOURNAL OF CHEMICAL PHYSICS 138, 054301 (2013) Photodissociation dynamics of the methyl perthiyl radical at 248 nm  

E-Print Network [OSTI]

the photodissociation of the methyl perthiyl radical CH3SS at 248 nm. The radical was produced by flash pyrolysis

Neumark, Daniel M.

203

Optical measurements of methyl group tunneling in molecular crystals: Temperature dependence of the nuclear spin conversion rate  

E-Print Network [OSTI]

) The tunneling methyl groups in dimethyl-s-tetrazine (DMST) doped single crystals of durene were investigated

204

Methyl-CpG island-associated genome signature tags  

DOE Patents [OSTI]

Disclosed is a method for analyzing the organismic complexity of a sample through analysis of the nucleic acid in the sample. In the disclosed method, through a series of steps, including digestion with a type II restriction enzyme, ligation of capture adapters and linkers and digestion with a type IIS restriction enzyme, genome signature tags are produced. The sequences of a statistically significant number of the signature tags are determined and the sequences are used to identify and quantify the organisms in the sample. Various embodiments of the invention described herein include methods for using single point genome signature tags to analyze the related families present in a sample, methods for analyzing sequences associated with hyper- and hypo-methylated CpG islands, methods for visualizing organismic complexity change in a sampling location over time and methods for generating the genome signature tag profile of a sample of fragmented DNA.

Dunn, John J

2014-05-20T23:59:59.000Z

205

High Temperature Chemical Kinetic Combustion Modeling of Lightly Methylated Alkanes  

SciTech Connect (OSTI)

Conventional petroleum jet and diesel fuels, as well as alternative Fischer-Tropsch (FT) fuels and hydrotreated renewable jet (HRJ) fuels, contain high molecular weight lightly branched alkanes (i.e., methylalkanes) and straight chain alkanes (n-alkanes). Improving the combustion of these fuels in practical applications requires a fundamental understanding of large hydrocarbon combustion chemistry. This research project presents a detailed high temperature chemical kinetic mechanism for n-octane and three lightly branched isomers octane (i.e., 2-methylheptane, 3-methylheptane, and 2,5-dimethylhexane). The model is validated against experimental data from a variety of fundamental combustion devices. This new model is used to show how the location and number of methyl branches affects fuel reactivity including laminar flame speed and species formation.

Sarathy, S M; Westbrook, C K; Pitz, W J; Mehl, M

2011-03-01T23:59:59.000Z

206

Experimental studies on poly methyl methacrylate based gel polymer electrolytes for application in electrical double layer capacitors  

Science Journals Connector (OSTI)

Studies have been carried out on gel polymer electrolytes comprising poly methyl methacrylate (PMMA)-ethylene carbonate (EC)Ėpropylene carbonate (PC)Ėsalts, LiClO4, NaClO4 and (C2H5)4NClO4 (TEAClO4) with a view to using them as electrolytes in electrical double layer capacitors (EDLCs) based on activated charcoal powder electrodes. The optimum composition of gel electrolytes, PMMA (20?wt%)ĖEC?:?PC (1?:?1 v/v)Ė1.0?M salts exhibit high ionic conductivity of the order of ~10?3?S?cm?1 at room temperature with good mechanical/dimensional stability, suitable for their application in EDLCs. The EDLCs have been characterized using linear sweep cyclic voltammetry, galvanostatic chargeĖdischarge tests and ac impedance spectroscopy. The values of capacitance of 68Ė151?mF?cm?2 (equivalent to single electrode specific capacitance of 38Ė78?Fg?1 of activated charcoal powder) have been observed. These values correspond to a specific energy of 5.3Ė10.8?Wh?kg?1 and a power density of 0.19Ė0.22?kW?kg?1. The capacitance values have been observed to be stable up to 5000 voltammetric cycles or even more. A comparison of studies shows the predominant role of anions of the gel electrolytes in the capacitive behaviour of EDLCs.

S A Hashmi; Ashok Kumar; S K Tripathi

2007-01-01T23:59:59.000Z

207

Modeling the environmental suitability of recreational trails in the Sam Houston National Forest: an application of spatial technologies and the universal soil loss equation  

E-Print Network [OSTI]

suitability will be higher than that measured in areas of high suitability. CHAPTER III METHODOLOGY Trail Inventory The first phase of this study involved a GPS inventory of ORV trails in the Sam Houston National Forest. Although these trails... suitability will be higher than that measured in areas of high suitability. CHAPTER III METHODOLOGY Trail Inventory The first phase of this study involved a GPS inventory of ORV trails in the Sam Houston National Forest. Although these trails...

Holzer, Damon Michael

2012-06-07T23:59:59.000Z

208

Determination of Six Phthalic Acid Esters in Orange Juice Packaged by PVC Bottle Using SPE and HPLC-UV: Application to the Migration Study  

Science Journals Connector (OSTI)

......Y. Kang, W. Den, H. Bai, and F. Ko. Direct quantitative analysis of phthalate esters as micro-contaminants in cleanroom air and wafer surfaces by auto-thermal desorption-gas chromatography-mass spectrometry. J. Chromatogr. A 1070: 137145......

Zhiyong Guo; Danyi Wei; Meili Wang; Sui Wang

2010-10-01T23:59:59.000Z

209

Abstract 2013: Modulation of cellular uptake and increased therapeutic efficacy of the azacytidine-elaidic acid ester CP-4200 in vitro and in vivo  

Science Journals Connector (OSTI)

...azacytidine-elaidic acid ester CP-4200 in vitro and in vivo Bodo Brueckner 1 Maria Rius 1 Maria Rivera Markelova 2 Iduna Fichtner 3 Petter-Arnt...might have important therapeutic implications. Reference: Brueckner, B., et al. (2010). Mol. Cancer Ther. 9: 1256-1264...

Bodo Brueckner; Maria Rius; Maria Rivera Markelova; Iduna Fichtner; Petter-Arnt Hals; Marit Liland Sandvold; Frank Lyko

2011-07-12T23:59:59.000Z

210

Poly(?-amino ester) Nanoparticle Delivery of TP53 Has Activity against Small Cell Lung Cancer In Vitro and In Vivo  

Science Journals Connector (OSTI)

...Therapeutics Poly(beta-amino ester) Nanoparticle Delivery of TP53 Has Activity against...TP53 delivery in vitro and in vivo. Nanoparticle delivery of TP53 resulted in expression...chain (S), or an end group (E). Nanoparticle preparation For each transfection...

Chandrashekhar D. Kamat; Ron B. Shmueli; Nick Connis; Charles M. Rudin; Jordan J. Green; Christine L. Hann

2013-04-01T23:59:59.000Z

211

Conversion of the Common Food Constituent 5-Hydroxymethylfurfural into a Mutagenic and Carcinogenic Sulfuric Acid Ester in the Mouse in Vivo  

Science Journals Connector (OSTI)

Conversion of the Common Food Constituent 5-Hydroxymethylfurfural into a Mutagenic and Carcinogenic Sulfuric Acid Ester in the Mouse in Vivo ... 5-Hydroxymethylfurfural (HMF), formed by acid-catalyzed dehydration and in the Maillard reaction from reducing sugars, is found at high levels in numerous foods. ... Hydroxymethylfurfural, A Versatile Platform Chemical Made from Renewable Resources ...

Bernhard H. Monien; Heinz Frank; Albrecht Seidel; Hansruedi Glatt

2009-04-22T23:59:59.000Z

212

Top Spot is an intelligent advertising product that targets your most suitable listings to the right people  

E-Print Network [OSTI]

Top Spot is an intelligent advertising product that targets your most suitable listings estate agency both before and after signing up to Top Spot. 72% MORE VIEWS^ Advertising with Top Spot Premium design ­ bold colour and larger "Hero Shot" photo Smarter, efficient and targeted advertising

Peters, Richard

213

Assessment of managed aquifer recharge site suitability and influence using a GIS and3 numerical modeling4  

E-Print Network [OSTI]

and wetlands; land subsidence and an associated loss of storage39 capacity; and seawater intrusion simulated MAR projects placed in locations identified as "highly suitable" reduce seawater23 intrusion to reduce seawater intrusion more rapidly, but at a cost of efficiency, as these projects25 also result

Fisher, Andrew

214

Variable temperature, relative humidity ,,0%100%..., and liquid neutron reflectometry sample cell suitable for polymeric and biomimetic materials  

E-Print Network [OSTI]

Variable temperature, relative humidity ,,0%­100%..., and liquid neutron reflectometry sample cell , and bulk liquid neutron reflectometry sample cell suitable for the study of polymeric and biomimetic. This permits the study, by neutron reflectometry, of samples that are intrinsically unstable in bulk water

Barrett, Christopher

215

Abstract-This paper deals to the suitability of Complexity Measure of ECG signals for the classification of cardiac  

E-Print Network [OSTI]

Abstract- This paper deals to the suitability of Complexity Measure of ECG signals algorithms used in both surface ECG monitors and in implantable cardiovertor/defibrillators rely on simple to ECG classification mainly because of the poor results obtained. However, one of the advantages

Ayesta, Urtzi

216

Genomic DNA methylation in various developmental stages of two plant pathogenic fungi  

E-Print Network [OSTI]

blotting procedure. The blots were then hybridized with DNA probes from the highly repeated Neurospora crassa rDNA repeat unit labeled with [a. P] dCTP in a random-primed oligolabeling reaction. Results of the hybridizations were visualized... shows s. high degree of methylation at the inner (3') C in both stages (mycelia and sclerotia) at the genomic level. The rRNA genes exhibit the same high level of methylation at the 3' C with the addition of some stage specific methylation...

Schliesing, Laura Jo

1990-01-01T23:59:59.000Z

217

Separation of methyl t-butyl ether from close boiling C[sub 5] hydrocarbons by extractive distillation  

SciTech Connect (OSTI)

A method for recovering methyl t-butyl ether from a mixture of methyl t-butyl ether and 1-pentene which comprises distilling a mixture of methyl t-butyl ether and 1-pentene in the presence of about one part of an extractive agent per part of methyl t-butyl ether -- 1-pentene mixture, recovering the 1-pentene as overhead product and obtaining the methyl t-butyl ether and the extractive agent from the still pot, wherein said extractive agent consists of one material selected from the group consisting of sulfolane, nitroethane, t-butanol, ethylene glycol diacetate, 1-methoxy-2-propanol acetate, methyl isoamyl ketone, ethylene glycol methyl ether, propylene glycol phenyl ether and diethyl malonate.

Berg, L.

1993-07-20T23:59:59.000Z

218

Bioremediation of the organophosphate methyl parathion using genetically engineered and native organisms  

E-Print Network [OSTI]

to remediate hazardous substances at significantly higher rates than found with natural systems. Specifically, degradation of methyl parathion (MP) by hydrolysis with a genetically engineered Escherichia coli was investigated along with degradation of one...

Diaz Casas, Adriana Z.

2005-11-01T23:59:59.000Z

219

Rotating disk sorptive extraction of triclosan and methyl-triclosan from water samples  

Science Journals Connector (OSTI)

A method of sample preparation based on use of rotating disk sorptive extraction (RDSE) has been developed for determination of triclosan (TCS) and methyl-triclosan (MTCS) in water samples. The sorptive...w/v), d...

Lourdes Jachero; Betsabet Sepķlveda; Inťs AhumadaÖ

2013-09-01T23:59:59.000Z

220

X-ray and Neutron Scattering Studies of Methyl Iodide and Hydrogen Confined in Porous Media.  

E-Print Network [OSTI]

??X-ray diffraction was used to study the liquid - solid phase transition and structure of methyl iodide confined in porous GelTech© glass, with 25, 50Ö (more)

Glanville, Yvonne

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Aberrant Promoter Methylation and Silencing of Laminin-5-Encoding Genes in Breast Carcinoma  

Science Journals Connector (OSTI)

...cells, become motile, and subsequently force their path through surrounding obstacles...Alterations in DNA methylation: a fundamental aspect of neoplasia. Adv. Cancer Res...Breast Staging in AJCC Cancer Staging Handbook, Ed. 5 171-180, Lippincott-Raven...

Ubaradka G. Sathyanarayana; Asha Padar; Chun Xian Huang; Makoto Suzuki; Hisayuki Shigematsu; B. Nebiyou Bekele; and Adi F. Gazdar

2003-12-15T23:59:59.000Z

222

E-Print Network 3.0 - alternative 2-c-methyl-d-erythritol 4-phosphate...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Cara L. Jenkins1 Summary: phosphoramidite. Tetrahedron Lett 28, 101-102. 19 Giner J-L & Ferris WV Jr (2002) Synthesis of 2-C-methyl-d-erythritol Source: Raines,...

223

Proton spin conversion of coupled methyl groups in lithium acetate studied by inelastic neutron scattering  

Science Journals Connector (OSTI)

The temperature dependence of the tunneling spectrum of methyl groups in lithium acetate dihydrate has been studied in the temperature...3 pairs which are isolated from each other. However, from the fact that the...

A. Heidemann; K. J. Abed; C. J. BarkerÖ

1987-01-01T23:59:59.000Z

224

Halogenated 1'-methyl-1,2'-bipyrroles (MBPs) in the Norwestern Atlantic  

E-Print Network [OSTI]

Halogenated 1'-methyl-1,2'-bipyrroles (MBPs) are a distinctive class of marine organic compounds. They are naturally produced, they have a unique carbon structure, they are highly halogenated, and they bioaccumulate in ...

Pangallo, Kristin C

2009-01-01T23:59:59.000Z

225

Novel syngas-based process for methyl methacrylate  

SciTech Connect (OSTI)

Research Triangle Institute (RTI), Eastman Chemical Company, and Bechtel are developing a novel process for synthesis of methyl methacrylate (MMA) from coal-derived syngas, under a contract from the U.S. Department of Energy, Pittsburgh Energy Technology Center. This three-step process consists of synthesis of a propionate, its condensation with formaldehyde, and esterification of resulting methacrylic acid (MAA) with methanol to produce MMA. Eastman has focused on the research on propionate synthesis step. The resultant Mo catalysts work efficiently at much less severe conditions (170{degrees}C and 30 atm) than the conventional Ni catalysts (270{degrees}C and 180 atm). Bechtel has performed an extensive cost analysis, which shows that Eastman`s propionate synthesis process is competitive with other technologies to produce the anhydride. In the second step, RTI and Eastman have developed active and stable V-SI-P and Ta metal oxide catalysts for condensation reactions of propionates with formaldehyde. RTI has demonstrated a novel correlation among the catalyst acid-base properties, condensation reaction yield, and long-term catalyst activity. Current research focuses on enhancing the condensation reaction yields, acid-base properties, in situ condensation in a high- temperature, high-pressure (HTHP) slurry reactor, and alternate formaldehyde feedstocks. Based on Eastman and RTI laboratory reactor operating data, a cost estimate is also being developed for the integrated process.

Gogate, M.R.; Spivey, J.J. [Research Triangle Institute, Research Triangle Park, NC (United States); Zoeller, J.R. [Eastman Chemical Co., Kingsport, TN (United States); Choi, G.N. [Bechtel, Inc., San Francisco, CA (United States); Tam, S.S. [Bechtel, Inc., Houston, TX (United States); Tischer, R.E. [USDOE Pittsburgh Energy Technology Center, PA (United States); Srivastava, R.D. [Burns and Roe Services Corp., Pittsburgh, PA (United States)

1996-12-31T23:59:59.000Z

226

An evaluation of the 3M Organic Vapor Monitor #3500 as a short term exposure limit sampling device for acetone, methyl ethyl ketone, and methyl iso butyl ketone  

E-Print Network [OSTI]

. An exploded view of the monitor is illustrated in Figure 1. The theory of diffusive sampling considers a concentration gra- dient between the ambient air and the adsorbent to be the driving force for sampling. For the adsorption to be controlled by diffu...AN EVALUATION OF THE 3M ORGANIC VAPOR MONITOR 43500 AS A SHOR'I TERM EXPOSURE LIMIT SAMPLING DEVICE FOR ACETONE, METHYL ETHYL KETONE, AND METHYL ISO BUTYL KETONE A Thesis by LLOYD B. ANDREW III Submitted to the Graduate College of Texas ASM...

Andrew, Lloyd B.

2012-06-07T23:59:59.000Z

227

Radio-methyl vorozole and methods for making and using the same  

DOE Patents [OSTI]

Radiotracer vorozole compounds for in vivo and in vitro assaying, studying and imaging cytochrome P450 aromatase enzymes in humans, animals, and tissues and methods for making and using the same are provided. [N-radio-methyl] vorozole substantially separated from an N-3 radio-methyl isomer of vorozole is provided. Separation is accomplished through use of chromatography resins providing multiple mechanisms of selectivity.

Kim, Sung Won; Biegon, Anat; Fowler, Joanna S.

2014-08-05T23:59:59.000Z

228

Radio-methyl vorozole and methods for making and using the same  

DOE Patents [OSTI]

Radiotracer vorozole compounds for in vivo and in vitro assaying, studying and imaging cytochrome P450 aromatase enzymes in humans, animals, and tissues and methods for making and using the same are provided. [N-radio-methyl] vorozole substantially separated from an N-3 radio-methyl isomer of vorozole is provided. Separation is accomplished through use of chromatography resins providing multiple mechanisms of selectivity.

Kim, Sung Won; Biegon, Anat; Fowler, Joanna S.

2014-08-12T23:59:59.000Z

229

Storage effects on desorption efficiencies of methyl ethyl ketone and styrene collected on activated charcoal  

E-Print Network [OSTI]

efficier&cy nf methyl etiiy', Ketone and styrene monomer adsorbed on activated charcoal samples, and stored under isotherm&al condit'ions, were investigated as a function of storage time. The dependence of the storage time effects on the storage temp...- erature and compound concentration were also studied. Results showed no siqnif', cant storag&e time effects on adsorbed styrene after sixty days of storage. A very significant decrease in the desorption ef iciency of methyl ethyl ketone was observed...

Dommer, Richard Alvin

2012-06-07T23:59:59.000Z

230

State Restrictions on Methyl Tertiary Butyl Ether (released in AEO2006)  

Reports and Publications (EIA)

By the end of 2005, 25 states had barred, or passed laws banning, any more than trace levels of methyl tertiary butyl ether (MTBE) in their gasoline supplies, and legislation to ban MTBE was pending in 4 others. Some state laws address only MTBE; others also address ethers such as ethyl tertiary butyl ether (ETBE) and tertiary amyl methyl ether (TAME). Annual Energy Outlook 2006 assumes that all state MTBE bans prohibit the use of all ethers for gasoline blending.

2006-01-01T23:59:59.000Z

231

Alcohol to Ester 21 ALCOHOL TO ESTER  

E-Print Network [OSTI]

.) Attach a Claisen adapter to the flask. Place a thermometer adapter with a thermometer in the main arm of the Claisen adapter so that the thermometer point is immersed in the liquid (but not so deep sulfuric acid (may be strong exotherm). Rapidly plug the Claisen adapter (with thermometer and condenser

Jasperse, Craig P.

232

Recommendation by the Secretary of Energy Regarding the Suitability of the Yucca Mountain Site for a Repository Under the Nuclear Waste Policy Act of 1982  

Broader source: Energy.gov [DOE]

Recommendation by the Secretary of Energy Regarding the Suitability of the Yucca Mountain Site for a Repository Under the Nuclear Waste Policy Act of 1982

233

Novel Class of Benzoic Acid Ester Derivatives as Potent PDE4 Inhibitors for Inhaled Administration in the Treatment of Respiratory Diseases  

Science Journals Connector (OSTI)

A series of novel ester derivatives of 1-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-(3,5-dichloropyridin-4-yl) ethanol have been synthesized and evaluated for inhibitory activity toward cAMP-specific phosphodiesterase-4 (PDE4). ... Intratracheal administration of compound 32a was performed by placing the micronized drug blended with lactose into a dry powder insufflator (Penn Century, Philadelphia, PA, USA). ...

Elisabetta Armani; Gabriele Amari; Andrea Rizzi; Renato De Fanti; Eleonora Ghidini; Carmelida Capaldi; Laura Carzaniga; Paola Caruso; Matilde Guala; Ilaria Peretto; Elena La Porta; Pier T. Bolzoni; Fabrizio Facchinetti; Chiara Carnini; Nadia Moretto; Riccardo Patacchini; Franco Bassani; Valentina Cenacchi; Roberta Volta; Francesco Amadei; Silvia Capacchi; Maurizio Delcanale; Paola Puccini; Silvia Catinella; Maurizio Civelli; Gino Villetti

2014-01-08T23:59:59.000Z

234

Organic synthesis as an effective approach to chemical, pharmaceutical, and biosynthetic investigations of natural products  

E-Print Network [OSTI]

acetate on the thiol and hydrolysis of the methyl ester were achieved in one step by treatment with lithium

Suyama, Takashi L.

2009-01-01T23:59:59.000Z

235

Caffeic acid phenethyl ester downregulates phospholipase D1 via direct binding and inhibition of NF?B transactivation  

SciTech Connect (OSTI)

Highlights: ēWe found CAF…, a natural product that suppresses expression and activity of PLD1. ēCAPE decreased PLD1 expression by inhibiting NF?B transactivation. ēCAPE rapidly inhibited PLD activity via its binding to a Cys837 of PLD1. ēPLD1 downregulation by CAPE inhibited invasion and proliferation of glioma cells. -- Abstract: Upregulation of phospholipase D (PLD) is functionally linked with oncogenic signals and tumorigenesis. Caffeic acid phenethyl ester (CAPE) is an active compound of propolis extract that exhibits anti-proliferative, anti-inflammatory, anti-oxidant, and antineoplastic properties. In this study, we demonstrated that CAPE suppressed the expression of PLD1 at the transcriptional level via inhibition of binding of NF?B to PLD1 promoter. Moreover, CAPE, but not its analogs, bound to a Cys837 residue of PLD1 and inhibited enzymatic activity of PLD. CAPE also decreased activation of matrix metalloproteinases-2 induced by phosphatidic acid, a product of PLD activity. Ultimately, CAPE-induced downregulation of PLD1 suppressed invasion and proliferation of glioma cells. Taken together, the results of this study indicate that CAPE might contribute to anti-neoplastic effect by targeting PLD1.

Park, Mi Hee; Kang, Dong Woo [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of)] [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of); Jung, Yunjin [College of Pharmacy, Pusan National University, Busan 609-735 (Korea, Republic of)] [College of Pharmacy, Pusan National University, Busan 609-735 (Korea, Republic of); Choi, Kang-Yell [Translational Research Center for Protein Function Control, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul (Korea, Republic of)] [Translational Research Center for Protein Function Control, Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul (Korea, Republic of); Min, Do Sik, E-mail: minds@pusan.ac.kr [Department of Molecular Biology, Pusan National University, Busan 609-735 (Korea, Republic of)

2013-12-06T23:59:59.000Z

236

Polystyrene/Poly(methyl methacrylate) Blends in the Presence of Cyclohexane: Selective Solvent Washing or Equilibrium Adsorption?  

E-Print Network [OSTI]

-cyclohexane (PS:CH), poly(methyl methacrylate)-carbon tetrachloride (PMMA:CCl4), and PS:CCl4 adsorbing

237

Geometric and Electronic Structures of the Ni(I) and Methyl-Ni(III)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 9 Geometric and Electronic Structures of the Ni(I) and Methyl-Ni(III) Intermediates of Methyl-Coenzyme M Reductase Methyl-coenzyme M reductase (MCR) from methanogenic archaea catalyzes the terminal step in biological methane synthesis. Using coenzyme B (CoBSH) as the two-electron donor, MCR reduces methyl-coenzyme M (methyl-SCoM) to form methane and the heterodisulfide product, CoBS-SCoM. MCR contains an essential redox active nickel tetrapyrrolic cofactor called coenzyme F430 at its active site, which is active in the reduced Ni(I) state (MCRred1). All of the biologically generated methane, amounting to 1 billion tons per annum globally, is formed by MCR. Furthermore, recent evidence indicates that anaerobic methane oxidation is also catalyzed by MCR and occurs by a reversal of the methane synthesis reaction. Methane is a potent greenhouse gas, trapping 20 times more heat than CO2. In addition, methane is also an important and clean fuel as it produced the least amount of CO2 per unit of heat released. Thus, it is critically important to understand the mechanism of formation of the smallest hydrocarbon in nature.

238

Electron stimulated reactions of methyl iodide coadsorbed with amorphous solid water  

SciTech Connect (OSTI)

The electron stimulated reactions of methyl iodide (MeI) adsorbed on and suspended within amorphous solid water (ice) were studied using a combination of postirradiation temperature programmed desorption and reflection absorption infrared spectroscopy. For MeI adsorbed on top of amorphous solid water (ice), electron beam irradiation is responsible for both structural and chemical transformations within the overlayer. Electron stimulated reactions of MeI result principally in the formation of methyl radicals and solvated iodide anions. The cross section for electron stimulated decomposition of MeI is comparable to the gas phase value and is only weakly dependent upon the local environment. For both adsorbed MeI and suspended MeI, reactions of methyl radicals within MeI clusters lead to the formation of ethane, ethyl iodide, and diiodomethane. In contrast, reactions between the products of methyl iodide and water dissociation are responsible for the formation of methanol and carbon dioxide. Methane, formed as a result of reactions between methyl radicals and either parent MeI molecules or hydrogen atoms, is also observed. The product distribution is found to depend on the film's initial chemical composition as well as the electron fluence. Results from this study highlight the similarities in the carbon-containing products formed when monohalomethanes coadsorbed with amorphous solid water are irradiated by either electrons or photons.

Perry, C. C.; Faradzhev, N. S.; Madey, T. E.; Fairbrother, D. H. [Department of Chemistry, Oakwood College, Huntsville, Alabama 35896 (United States); Department of Physics and Astronomy, and Laboratory for Surface Modification, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8019 (United States); Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

2007-05-28T23:59:59.000Z

239

Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Two Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns Nan Zhao a , Ju Guan a , Farhad Forouhar b , Timothy J. Tschaplinski c , Zong-Ming Cheng a , Liang Tong b , Feng Chen a, * a Department of Plant Sciences, University of Tennessee, 252 Ellington Plant Science Bldg., 2431 Joe Johnson Drive, Knoxville, TN 37996, USA b Department of Biological Sciences, Northeast Structural Genomics Consortium, Columbia University, New York, NY 10027, USA c Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA a r t i c l e i n f o Article history: Received 3 June 2008 Received in revised form 27 October 2008 Available online 10 January 2009 Keywords: Black cottonwood Populus trichocarpa Methyl esterase SABP2 Methyl salicylate Salicylic acid Gene family Molecular modeling a b s t r a c t Two genes encoding proteins

240

DOEEA-1157 ENVIRONlMENTAL ASSESSMENT METHYL CHLORIDE VIA OXYHYDROCHLOFUNATION OF METHANE:  

Broader source: Energy.gov (indexed) [DOE]

57 57 ENVIRONlMENTAL ASSESSMENT METHYL CHLORIDE VIA OXYHYDROCHLOFUNATION OF METHANE: A BUILDING BLOCK FOR CHEMICALS AND FUELS FROM NATURAL GAS DOW CORNING CORPORATION CARROLLTON, KENTUCKY SEPTEMBER 1996 U.S. DEPARTMENT OF ENERGY PITTSBURGH ENERGY TECHNOLOGY CENTER CUM ~~~~~~~~ DOEEA-1157 ENVIRONlMENTAL ASSESSMENT METHYL CHLORIDE VIA OXYHYDROCHLORINATION OF METHANE: A BUILDING BLOCK FOR CHEMICALS AND FUELS FROM NATURAL GAS DOW CORNING CORPORATION CARROLLTON, KENTUCKY SEPTEMBER 1996 U.S. DEPARTMENT OF ENERGY PITTSBURGH ENERGY TECHNOLOGY CENTER Portions of this document may be illegible in electronic image products. Image are produced from the best available original document. &E/,Etq --,/s7 FINDING OF NO SIGNIFICANT IMPACT FOR THE PROPOSED METHYL CHLORIDE V

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

The role of DNA methylation in catechol-enhanced erythroid differentiation of K562 cells  

SciTech Connect (OSTI)

Catechol is one of phenolic metabolites of benzene in vivo. Catechol is also widely used in pharmaceutical and chemical industries. In addition, fruits, vegetables and cigarette smoke also contain catechol. Our precious study showed that several benzene metabolites (phenol, hydroquinone, and 1,2,4-benzenetriol) inhibited erythroid differentiation of K562 cells. In present study, the effect of catechol on erythroid differentiation of K562 cells was investigated. Moreover, to address the role of DNA methylation in catechol-induced effect on erythroid differentiation in K562 cells, methylation levels of erythroid-specific genes were analyzed by Quantitative MassARRAY methylation analysis platform. Benzidine staining showed that exposure to catechol enhanced hemin-induced hemoglobin accumulation in K562 cells in concentration- and time-dependent manners. The mRNA expression of erythroid specific genes, including ?-globin, ?-globin, ?-globin, erythroid 5-aminolevulinate synthase, erythroid porphobilinogen deaminase, and transcription factor GATA-1 genes, showed a significant concentration-dependent increase in catechol-treated K562 cells. The exposure to catechol caused a decrease in DNA methylation levels at a few CpG sites in some erythroid specific genes including ?-globin, ?-globin and erythroid porphobilinogen deaminase genes. These results indicated that catechol improved erythroid differentiation potency of K562 cells at least partly via up-regulating transcription of some erythroid related genes, and suggested that inhibition of DNA methylation might be involved in up-regulated expression of some erythroid related genes. -- Highlights: ? Catechol enhanced hemin-induced hemoglobin accumulation. ? Exposure to catechol resulted in up-regulated expression of erythroid genes. ? Catechol reduced methylation levels at some CpG sites in erythroid genes.

Li, Xiao-Fei; Wu, Xiao-Rong; Xue, Ming; Wang, Yan; Wang, Jie; Li, Yang; Suriguga,; Zhang, Guang-Yao; Yi, Zong-Chun, E-mail: yizc@buaa.edu.cn

2012-11-15T23:59:59.000Z

242

Genomic DNA methylation at specific stages in the life cycle of two fungi  

E-Print Network [OSTI]

Member) John R, Gold (Member) J. A. ang (Head of De artment) August 1985 ABSTRACT Genomic DNA Methylation at Specific Stages in the Life Cycle of Two Fungi. (August 1985) Eldon Ralph Jupe, B. S. , Texas A df M University Chairman of Advisory... Member) John R, Gold (Member) J. A. ang (Head of De artment) August 1985 ABSTRACT Genomic DNA Methylation at Specific Stages in the Life Cycle of Two Fungi. (August 1985) Eldon Ralph Jupe, B. S. , Texas A df M University Chairman of Advisory...

Jupe, Eldon Ralph

2012-06-07T23:59:59.000Z

243

Lithium Methyl Carbonate as a Reaction Product of Metallic Lithiumand Dimethyl Carbonate  

SciTech Connect (OSTI)

To improve the understanding of passive film formation on metallic lithium in organic electrolyte, we synthesized and characterized lithium methyl carbonate (LiOCO{sub 2}CH{sub 3}), a prototypical component of the film. The chemical structure of this compound was characterized with Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared Spectroscopy (FTIR), and its thermal stability and decomposition pathway was studied by thermo-gravimetric analysis (TGA). The FTIR spectrum of chemically synthesized compound enabled us to resolve multiple products in the passive film on lithium in dimethyl carbonate (DMC). Lithium methyl carbonate is only one of the components, the others being lithium oxalate and lithium methoxide.

Zhuang, Guorong V.; Yang, Hui; Ross Jr., Philip N.; Xu, Kang; Jow, T. Richard

2005-10-16T23:59:59.000Z

244

Effects of Triclocarban, Triclosan, and Methyl Triclosan on Thyroid Hormone Action and Stress in Frog and Mammalian Culture Systems  

Science Journals Connector (OSTI)

Effects of Triclocarban, Triclosan, and Methyl Triclosan on Thyroid Hormone Action and Stress in Frog and Mammalian Culture Systems ... Triclosan (TCS) and triclocarban (TCC) are widely used broad spectrum bactericides that are common pollutants of waterways and soils. ... Methyl triclosan (mTCS) is the predominant bacterial TCS metabolite. ...

Ashley Hinther; Caleb M. Bromba; Jeremy E. Wulff; Caren C. Helbing

2011-05-16T23:59:59.000Z

245

An alternative approach to multiple testing for methylation QTL mapping reduces the proportion of falsely identified CpGs  

Science Journals Connector (OSTI)

......loci exist for DNA methylation and gene expression in human brain. PLoS Genet. (2010) 6:e1000952. Goeman JJ , Solari A...individual differences in gene-specific methylation in human brain. Am. J. Hum. Genet. (2010) 86:411-419. Supplementary......

Renť Luijk; Jelle J. Goeman; Eline P. Slagboom; Bastiaan T. Heijmans; Erik W. van Zwet

2014-10-01T23:59:59.000Z

246

IDENTIFYING THE USAGE PATTERNS OF METHYL TERT-BUTYL ETHER (MTBE) AND OTHER OXYGENATES IN GASOLINE USING GASOLINE  

E-Print Network [OSTI]

IDENTIFYING THE USAGE PATTERNS OF METHYL TERT-BUTYL ETHER (MTBE) AND OTHER OXYGENATES IN GASOLINE USING GASOLINE SURVEYS By Michael J. Moran, Rick M. Clawges, and John S. Zogorski U.S. Geological Survey 1608 Mt. View Rapid City, SD 57702 Methyl tert-butyl ether (MTBE) is commonly added to gasoline

247

The Acquisition of hMLH1 Methylation in Plasma DNA after Chemotherapy Predicts Poor Survival for Ovarian Cancer Patients  

Science Journals Connector (OSTI)

...these patients, 78 had died, giving the methylation study 74% power to detect a hazard ratio of 2 for the effect of acquired methylation...carcinoma. Proc Natl Acad Sci USA, 95: 6870-5, 1998. 23 De Wind N, Dekker M, van Rossum A, et al Mouse models for hereditary...

Gillian Gifford; Jim Paul; Paul A. Vasey; Stanley B. Kaye; and Robert Brown

2004-07-01T23:59:59.000Z

248

Syntrophs Dominate Sequences Associated with the Mercury Methylation-Related Gene hgcA in the Water Conservation Areas of the Florida Everglades  

Science Journals Connector (OSTI)

...methylation in this ecosystem. The dominant methylators...microorganisms in the aquatic environment: a critical...biogeochemistry in subtropical ecosystems. Lewis Publishers...in the South Florida ecosystem: distribution, sources...and management for restoration. Crit. Rev. Environ...

Hee-Sung Bae; Forrest E. Dierberg; Andrew Ogram

2014-08-08T23:59:59.000Z

249

Synthesis of Signals for De Novo DNA Methylation in Neurospora crassa  

Science Journals Connector (OSTI)

...Tests of various 25- to 100-bp synthetic DNA sequences revealed that both T...developed a new system to test short synthetic DNA fragments for their potential...DNA methylation in N. crassa by synthetic DNA fragments a Plasmid designation...

Hisashi Tamaru; Eric U. Selker

2003-04-01T23:59:59.000Z

250

Methylation of Mercury by Bacteria Exposed to Dissolved, Nanoparticulate, and Microparticulate Mercuric Sulfides  

E-Print Network [OSTI]

Methylation of Mercury by Bacteria Exposed to Dissolved, Nanoparticulate, and Microparticulate in the environment is partly controlled by the bioavailability of inorganic divalent mercury (Hg(II)) to anaerobic matter to form chemical species that include organic-coated mercury sulfide nanoparticles as reaction

251

An experimental and detailed chemical kinetic modelling study of 2methyl furan oxidation  

E-Print Network [OSTI]

platform chemical 5hydroxymethylfurfural now a possibility [4], [5], [6] and [7]. 25DMF offers significantAn experimental and detailed chemical kinetic modelling study of 2methyl furan oxidation.55­1.65, initial temperatures of 298­398 K and atmospheric pressure. A detailed chemical kinetic mechanism

Paris-Sud XI, Université de

252

Chloromethane, Methyl Donor in Veratryl Alcohol Biosynthesis in Phanerochaete chrysosporium and Other Lignin-Degrading Fungi  

Science Journals Connector (OSTI)

...standard on a GE Omega 500-MHz NMR spectrometer, with 16...1 ppb (vol/vol) in the atmosphere (27). ACKNOWLEDGMENTS We...Analysis of human serum and plasma using the LKB 4400 amino acid...distribution of methyl chloride in the atmosphere. J. Geophys. Res. 85...

David B. Harper; John A. Buswell; James T. Kennedy; John T. G. Hamilton

1990-11-01T23:59:59.000Z

253

Water Research 37 (2003) 37563766 Seasonal and daily variations in concentrations of methyl-  

E-Print Network [OSTI]

by volume to gasoline from November to February, and blending 11% MTBE by volume during the rest of the year; accepted 24 March 2003 Abstract Methyl-tertiary-butyl ether (MTBE), an additive used to oxygenate gasoline of gasoline-powered watercraft. This paper documents and explains both seasonal and daily variations in MTBE

Toran, Laura

254

Selective Methylation Changes on the Bacillus subtilis Chemotaxis Receptor McpB Promote Adaptation*  

E-Print Network [OSTI]

. In the same background, McpB(E630D,E637D) produced methanol only upon aspara- gine addition, whereas McpB(Q371D,E630D) produced methanol only upon asparagine removal. Thus methanol release from Mcp, from which methanol is released in response to all stimuli. McpB has four putative methylation sites

Ordal, George W.

255

he increasing frequency of detection of the widely used gasoline additive methyl tert-  

E-Print Network [OSTI]

T he increasing frequency of detection of the widely used gasoline additive methyl tert- butyl, the September 15, 1999, Report of the Blue Ribbon Panel on Oxygenates in Gasoline (1) states that between 5 with large releases (e.g., LUFTs). Unprecedented growth in use Use of MTBE as a gasoline additive began

256

Arsenic methylation capacity and obesity are associated with insulin resistance in obese children and adolescents  

Science Journals Connector (OSTI)

Abstract The goal of the present study was to compare the arsenic methylation capacities in elementary school and junior high school students in an area of Taiwan with low arsenic exposure, and explore the influence of both arsenic methylation capacity and obesity on insulin resistance in these children and adolescents using the HOMA-IR index. We recruited 303 elementary school students and 319 junior high school students in Taipei City from September 2007 to November 2011. Concentrations of inorganic arsenic (arsenite?+?arsenate), monomethylarsonic acid (MMAV) and dimethylarsinic acid (DMAV) were determined by a high-performance liquid chromatography-linked hydride generator and atomic absorption spectrometry. Insulin resistance was determined by HOMA-IR. Elementary school students had significantly lower inorganic arsenic percentage and a higher DMAV percentage than junior high school students. It seems that the former had better arsenic methylation capability than the latter. The HOMA-IR value was significantly and positively related to the sum of the urinary inorganic and methylated arsenic (TotalAs) concentrations and also the BMI Z score, with the regression coefficients (?) being 0.058 (p?

Hsiu-Chen Lin; Yung-Kai Huang; Horng-Sheng Shiue; Liang-Sien Chen; Cheuk-Sing Choy; Shiau-Rung Huang; Bor-Cheng Han; Yu-Mei Hsueh

2014-01-01T23:59:59.000Z

257

Fundamental Reaction Pathways and Free-Energy Barriers for Ester Hydrolysis of Intracellular Second-Messenger 3Ď,5Ď-Cyclic Nucleotide  

Science Journals Connector (OSTI)

We have performed a series of first-principles electronic structure calculations to study competing reaction pathways and the corresponding free-energy barriers for the ester hydrolysis of intracellular second-messenger adenosine 3Ď,5Ď-cyclic monophosphate (cAMP) and related phosphodiesters including trimethylene phosphate (TMP). ... 3Ď,5Ď-Cyclic nucleotides, such as adenosine 3Ď,5Ď-cyclic monophosphate (cAMP) found by Sutherland and Rall nearly a half-century ago,1 are intracellular second messengers that are essential to vision, muscle contraction, neurotransmission, exocytosis, cell growth, and differentiation. ...

Xi Chen; Chang-Guo Zhan

2004-03-31T23:59:59.000Z

258

A 0.042 mm^2 programmable biphasic stimulator for cochlear implants suitable for a large number of channels  

E-Print Network [OSTI]

This paper presents a compact programmable biphasic stimulator for cochlear implants. By employing double-loop negative feedback, the output impedance of the current generator is increased, while maximizing the voltage compliance of the output transistor. To make the stimulator circuit compact, the stimulation current is set by scaling a reference current using a two stage binary-weighted transistor DAC (comprising a 3 bit high-voltage transistor DAC and a 4 bit low-voltage transistor DAC). With this structure the power consumption and the area of the circuit can be minimized. The proposed circuit has been implemented in AMS 0.18um high-voltage CMOS IC technology, using an active chip area of about 0.042mm^2. Measurement results show that proper charge balance of the anodic and cathodic stimulation phases is achieved and a dc blocking capacitor can be omitted. The resulting reduction in the required area makes the proposed system suitable for a large number of channels.

Ngamkham, W; Serdijn, W A; Bes, C J; Briaire, J J; Frijns, J H M

2015-01-01T23:59:59.000Z

259

A comparative analysis of business structures suitable forfarmer-owned wind power projects in the United States  

SciTech Connect (OSTI)

For years, farmers in the United States have looked with envy on their European counterparts' ability to profitably farm the wind through ownership of distributed, utility-scale wind projects. Only within the past few years, however, has farmer- or community-owned wind power development become a reality in the United States. The primary hurdle to this type of development in the United States has been devising and implementing suitable business and legal structures that enable such projects to take advantage of tax-based federal incentives for wind power. This article discusses the limitations of such incentives in supporting farmer- or community-owned wind projects, describes four ownership structures that potentially overcome such limitations, and finally conducts comparative financial analysis on those four structures, using as an example a hypothetical 1.5 MW farmer-owned project located in the state of Oregon. We find that material differences in the competitiveness of each structure do exist, but that choosing the best structure for a given project will largely depend on the conditions at hand; e.g., the ability of the farmer(s) to utilize tax credits, preference for individual versus ''cooperative'' ownership, and the state and utility service territory in which the project will be located.

Bolinger, Mark; Wiser, Ryan

2004-11-11T23:59:59.000Z

260

Spectroscopic investigation of the vibrational quasi-continuum arising from internal rotation of a methyl group  

SciTech Connect (OSTI)

The goal of this project is to use spectroscopic techniques to investigate in detail phenomena involving the vibrational quasi-continuum in a simple physical system. Acetaldehyde was chosen for the study because: (i) methyl groups have been suggested to be important promotors of intramolecular vibrational relaxation, (ii) the internal rotation of a methyl group is an easily describle large-amplitude motion, which should retain its simple character even at high levels of excitation, and (iii) the aldehyde carbonyl group offers the possibility of both vibrational and electronic probing. The present investigation of the ground electronic state has three parts: (1) understanding the {open_quotes}isolated{close_quotes} internal-rotation motion below, at, and above the top of the torsional barrier, (2) understanding in detail traditional (bond stretching and bending) vibrational fundamental and overtone states, and (3) understanding interactions involving states with multiquantum excitations of at least one of these two kinds of motion.

Hougen, J.T. [NIST, Gaithersburg, MD (United States)

1993-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Evidence for low-temperature isotopic ordering in methyl-monodeuterated lithium acetate dihydrate  

Science Journals Connector (OSTI)

We measured the heat capacities of methyl-monodeuterated lithium acetate dihydrate single crystals (LiC2H2DO2∑2H2O) at 2 K < T < 20 K and Raman spectra at ambient conditions. Significant excess heat capacities were found at T†=†14.5†K and 5.5†K. The thermodynamic data is compared to that of fully protonated and fully deuterated LiAc and interpreted in terms of phase transitions between a classical dynamically disordered phase above 14.5†K, a phase stable between 14.5†K and 5.5†K in which there is quantum tunnelling of the methyl groups, and an isotopically ordered phase below 5.5†K.

F. SchrŲder; B. Winkler; J.D. Bauer; E. HaussŁhl; B. Rivera Escoto; F. Tristan Lůpez; M. Avalos Borja; C. Richter; J. Ferner

2012-01-01T23:59:59.000Z

262

Iron-catalyzed reaction products of ?-tocopherol with methyl 13(S)-hydroperoxy-9(Z),11(E)-octadecadienoate  

Science Journals Connector (OSTI)

?-Tocopherol was reacted with methyl 13(S)-hydroperoxy-9(Z),11(E)-octadecadienoate in the presence of an iron-chelate, Fe(III)-acetylacetonate, at 37įC in benzene. The...E)-octadecenoate, four stereoisomers of me...

Ryo Yamauchi; Norio Yamamoto; Koji Kato

1995-05-01T23:59:59.000Z

263

N-Methyl-N-Allylpyrrolidinium Based Ionic Liquids for Solvent-Free Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

We prepared four new ionic liquids consisting of N-methyl-N-allylpyrrolidinium cation in conjunction with anions including iodide, nitrate, thiocyanate, and dicyanamide, respectively, and measured their physical properties of density, viscosity, and ...

Ning Cai; Jing Zhang; Difei Zhou; Zhihui Yi; Jin Guo; Peng Wang

2009-02-16T23:59:59.000Z

264

Consumption of Tropospheric Levels of Methyl Bromide by C1 Compound-Utilizing Bacteria and Comparison to Saturation Kinetics  

Science Journals Connector (OSTI)

ARTICLE GEOMICROBIOLOGY Consumption of Tropospheric Levels of Methyl...bacteria showed no significant consumption of 12 pptv MeBr; thus, the ability...experiments supplied with pptv MeBr. Consumption of MeBr was measured on duplicate...

Kelly D. Goodwin; Ruth K. Varner; Patrick M. Crill; Ronald S. Oremland

2001-12-01T23:59:59.000Z

265

Infra red spectroscopy, flash pyrolysis, thermally assisted hydrolysis and methylation (THM) in the presence of tetramethylammonium hydroxide  

E-Print Network [OSTI]

Infra red spectroscopy, flash pyrolysis, thermally assisted hydrolysis and methylation (THM to sporopollenin or algaenan. This is in agreement with flash pyrolysis­gas chromatography­mass spectrometry (py

266

Assessment of the acute toxicity of triclosan and methyl triclosan in wastewater based on the bioluminescence inhibition of Vibrio fischeri  

Science Journals Connector (OSTI)

In this work, the contributions of triclosan and its metabolite methyl triclosan to the overall acute toxicity of wastewater...Vibrio fischeri.... The protocol used in this paper involved various steps. First, th...

Marinella Farrť; Daniela Asperger; Lina KantianiÖ

2008-04-01T23:59:59.000Z

267

Enhanced reductive degradation of methyl orange in a microbial fuel cell through cathode modification with redox mediators  

Science Journals Connector (OSTI)

A model azo dye, methyl orange (MO), was reduced through in situ utilization of the electrons derived from the anaerobic conversion of organics in a microbial fuel cell (MFC). The MO reduction process could be...

Rong-Hua Liu; Guo-Ping Sheng; Min SunÖ

2011-01-01T23:59:59.000Z

268

Coupled tunnelling motion of a pair of methyl groups in lithium acetate studied by inelastic neutron scattering  

Science Journals Connector (OSTI)

The tunnelling and torsional motions of methyl groups in lithium acetate dihydrate (CH3COOLi∑2H2O) have been studied in detail by incoherent inelastic neutron scattering. The results are interpreted by a model of...

S. Clough; A. Heidemann; A. H. HorsewillÖ

1984-01-01T23:59:59.000Z

269

Cyclic voltammetric investigation of the formation of intermetallic phases at a LiAl electrode in methyl acetate  

Science Journals Connector (OSTI)

The formation of various Li/Al intermetallic phases at the LiAl electrode in methyl acetate was studied using cyclic voltammetry. The thickness ... the reverse sweep, increased acceptance of deposited lithium, ro...

Y. S. Fung; H. C. Lai

1992-03-01T23:59:59.000Z

270

Abstract 293: High-throughput methylation sequencing of targeted genes in breast cancer specimens using nanofluidic PCR prepared libraries  

Science Journals Connector (OSTI)

...are more than 100 candidate genes reported throughout the literatures as promoter hypermethylated in breast cancers (Pubmeth web resource). More recently, with the application of genome wide array-based methylation profile analysis and next generation...

Jun Wang; Zibo Li; Yepeng Wu; Xinwu Guo; Shengyun Li; Zhi Xiao; Feiyu Chen; Zhongping Deng; Lizhong Dai; Wenjun Yi; Lili Tang

2014-10-01T23:59:59.000Z

271

CORRELATION OF DNA METHYLATION WITH MERCURY CONTAMINATION IN MARINE ORGANISMS: A CASE STUDY OF NOAA MUSSEL WATCH TISSUE SAMPLES  

E-Print Network [OSTI]

American oysters (Crassostrea virginica) obtained from the NOAA Mussel Watch program were screened for DNA methylation, a type of epigenetic response to stressors. Oysters were collected from sites in the Gulf of Mexico having high mercury...

Brinkmeyer, Robin; Taylor, Robert; Germ, Kaylyn E.

2011-08-04T23:59:59.000Z

272

Remediation of Methyl Iodide in Aqueous Solution and Soils Amended with Thiourea  

Science Journals Connector (OSTI)

Remediation of Methyl Iodide in Aqueous Solution and Soils Amended with Thiourea ... Therefore, spraying thiourea on the soil surface to form a ďreactive surface barrierĒ may be an effective and innovative strategy for controlling fumigant emissions to the atmosphere and for improving environmental protection. ... Currently, new and innovative remediation technologies including bioremediation, phytoremediation, and chemical remediation have been proposed for use in cleaning polluted soil and groundwater. ...

Wei Zheng; Sharon K. Papiernik; Mingxin Guo; Scott R. Yates

2004-01-08T23:59:59.000Z

273

DNA methylation patterns in IGF-II promoters and prognosis of ovarian cancer  

Science Journals Connector (OSTI)

...of DNA methylation; 3 targeted regions of P2 (P2A, P2B and P2C), while 2 assays each focused on P3 (P3A and P3B) and P4...promoters, which varied from 20% (P2A) to 47% (P2B) and 52% (P2C) in promoter 2, 49% (P3A) and 13% (P3B) in promoter 3...

Alicia Beeghly; D. Katsaros; S. Fracchioli; H. Chen; A. T. Prescott; A. Wiley; Herbert Yu

2005-05-01T23:59:59.000Z

274

An assessment of methyl mercury and volatile mercury in land-applied sewage sludge  

SciTech Connect (OSTI)

In 1993, the US Environmental Protection Agency issued regulations covering the land-application of municipal sewage sludge. These regulations established maximum pollutant concentrations and were based upon a risk assessment of human exposure. Mercury, assumed to be inorganic and non-volatile, was one pollutant evaluated. From April, 1995 through February, 1996, the authors studied the species of mercury contaminating municipal sludge applied to land, and the potential for volatilization of mercury from land-applied sludge. Methyl mercury was found at 0.1% of total mercury concentrations and was emitted from land-applied sludge to the atmosphere. Elemental mercury (Hg) was formed in land-applied sludge via the reduction of oxidized mercury and was also emitted to the atmosphere. Hg emission from land-applied sludge was significantly elevated over background soil emission. Methyl mercury is more toxic and more highly bioaccumulated than inorganic mercury, and warrants assessment considering these special criteria. Additionally, mercury emission from sludge-amended soil may lead to the contamination of other environmental media with significant concentrations of the metal. Although these pathways were not evaluated in the regulatory risk assessment, they are an important consideration for evaluating the risks from mercury in land-applied sludge. This presentation will summarize the results of a re-assessment of US EPA regulations regarding the land-application of municipal sewage sludge using data on methyl mercury toxicity and mercury transport in the atmosphere.

Carpi, A. [Cornell Univ., Ithaca, NY (United States); Lindberg, S.E. [Oak Ridge National Lab., TN (United States)

1995-12-31T23:59:59.000Z

275

Electrochemical properties of lithium hexafluoroarsenate in methyl acetate at various temperatures  

Science Journals Connector (OSTI)

Abstract Electrical conductivities of LiAsF6 in methyl acetate were measured in concentration range of 0.4269Ė2.2672†mol∑kg?†1 at 253.15, 263.15, 273.15, 283.15, 293.15, 303.15, 313.15, and 323.15†K. Data were treated by using the semi-empirical CasteelĖAmis equation at high concentrations. The dependence of conductivities on the temperature was described by the Arrhenius relationship. It was shown that activation energies for conductivity linearly increased with the mole fraction of LiAsF6. The variation tendency of the energies of activation for the conductivities of LiAsF6 in the order of aprotic solvents (propylene carbonate, ?-butyrolactone, methyl acetate, tetrahydrofuran) has been discussed on the basis of the hypothesis that various conduction mechanisms occur at high concentration in the solvents of low permittivity. The anodic and cathodic stabilities of the LiAsF6 in methyl acetate were measured on a Pt electrode, a wide enough electrochemical stability window being observed.

Elena Yu. Tyunina; Marina D. Chekunova

2013-01-01T23:59:59.000Z

276

Arsenic methylation capability and hypertension risk in subjects living in arseniasis-hyperendemic areas in southwestern Taiwan  

SciTech Connect (OSTI)

Background: Cumulative arsenic exposure (CAE) from drinking water has been shown to be associated with hypertension in a dose-response pattern. This study further explored the association between arsenic methylation capability and hypertension risk among residents of arseniasis-hyperendemic areas in Taiwan considering the effect of CAE and other potential confounders. Method: There were 871 subjects (488 women and 383 men) and among them 372 were diagnosed as having hypertension based on a positive history or measured systolic blood pressure {>=} 140 mm Hg and/or diastolic blood pressure {>=} 90 mm Hg. Urinary arsenic species were determined by high-performance liquid chromatography-hydride generator and atomic absorption spectrometry. Primary arsenic methylation index [PMI, defined as monomethylarsonic acid (MMA{sup V}) divided by (As{sup III} + As{sup V})] and secondary arsenic methylation index (SMI, defined as dimethylarsinic acid divided by MMA{sup V}) were used as indicators for arsenic methylation capability. Results: The level of urinary arsenic was still significantly correlated with cumulative arsenic exposure (CAE) calculated from a questionnaire interview (p = 0.02) even after the residents stopped drinking the artesian well water for 2-3 decades. Hypertensive subjects had higher percentages of MMA{sup V} and lower SMI than subjects without hypertension. However, subjects having CAE > 0 mg/L-year had higher hypertension risk than those who had CAE = 0 mg/L-year disregard a high or low methylation index. Conclusion: Inefficient arsenic methylation ability may be related with hypertension risk.

Huang, Y.-K. [Graduate Institute of Medical Sciences, School of Medicine, Taipei Medical University, Taipei, Taiwan (China); Tseng, C.-H. [National Taiwan University College of Medicine, Taipei, Taiwan (China); Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan (China); Department of Medical Research and Development, National Taiwan University Hospital Yun-Lin Branch, Yun-Lin, Taiwan (China); Huang, Y.-L. [Department of Public Health, School of Medicine, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei 110, Taiwan (China); Yang, M.-H. [Department of Nuclear Science, National Tsing-Hua University, Hsinchu, Taiwan (China); Chen, C.-J. [Genomic Research Center, Academia Sinica, Taipei, Taiwan (China); Graduate Institute of Epidemiology, College of Public Health, National Taiwan University Taipei, Taiwan (China); Hsueh, Y.-M. [Department of Public Health, School of Medicine, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei 110, Taiwan (China)]. E-mail: ymhsueh@tmu.edu.tw

2007-01-15T23:59:59.000Z

277

Crystal structure of N-(tert-but≠oxy≠carbon≠yl)phenyl≠alanylde≠hydro≠alanine isopropyl ester (Boc-Phe-Ala-OiPr)  

Science Journals Connector (OSTI)

In the crystal structure of the de≠hydro≠dipeptide (Boc-Phe-Ala-OiPr), the mol≠ecule has a trans configuration of the N-methyl≠amide group. Its geometry is different from saturated peptides but is in excellent agreement with other de≠hydro≠alanine compounds. In the crystal, an N-HO hydrogen bond links the mol≠ecules in a herringbone packing arrangement.

Lenartowicz, P.

2014-11-29T23:59:59.000Z

278

Automated Strong Cation Exchange Extraction of Fatty Acid Esters of 3-(N-Phenylamino)-1,2-propanediol from Oil Samples for Routine Quantification by HPLC-APCI/MS/MS  

Science Journals Connector (OSTI)

Fatty acid esters of 3-(N-phenylamino)-1,2-propanediol are currently considered the best chemical markers of toxic oils related to the Spanish toxic oil syndrome. ... The automatic procedure was carried out using a Spark Holland Marathon automatic injector connected to a Prospekt unit provided with a solvent delivery unit for automated SPE (Figure 2). ...

Rosa E. Calaf; Juana PeŮa; Sonia Paytubi; Montserrat Carrascal; Manuel Posada; Emilio Gelpi; Joaquin Abian

2001-10-05T23:59:59.000Z

279

Densities and isobaric vapor-liquid equilibria of butyl esters (methanoate to butanoate) with ethanol at 101.32 kPa  

SciTech Connect (OSTI)

Vapor-liquid equilibrium and densities at 101.32 kPa have been determined for the binary systems formed by four butyl esters (from methanoate to butanoate) with ethanol. The four systems exhibit positive deviations from ideal behavior, and all data (p-T-x-y) were found to be thermodynamically consistent. The activity coefficients and the dimensionless function G{sup E}/RT of the solution were correlated with its concentration by different equations. Am azeotrope was found in the mixture butyl methanoate (1) + ethanol (2) at T = 350.9 K and x{sub 1} = y{sub 1} = 0.088. The group contribution models ASOG and modified UNIFAC gave fair predictions.

Gonzalez, E.; Ortega, J. [Univ. of Las Palmas de Gran Canaria (Spain)

1995-11-01T23:59:59.000Z

280

UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Are non-marine organic-rich shales suitable exploration targets?  

E-Print Network [OSTI]

UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Are non-marine organic-rich shales suitable exploration targets? (EARTH-15-SR2) Host institution: University of Oxford Supervisor 1: Stuart Robinson Supervisor 2: Steve Hesselbo (University of Exeter) Project description: Shales

Henderson, Gideon

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

An Elliptic Curve Processor Suitable For RFIDTags L. Batina 1 , J. Guajardo 2 , T. Kerins 2 , N. Mentens 1 , P. Tuyls 2 , and I. Verbauwhede 1  

E-Print Network [OSTI]

An Elliptic Curve Processor Suitable For RFID­Tags L. Batina 1 , J. Guajardo 2 , T. Kerins 2 , N.Guajardo,Tim.Kerins,Pim.Tuyls}@philips.com Abstract. RFID­Tags are small devices used for identification purposes in many applications nowa­ days when their security and privacy is concerned. It is widely believed that devices with such constrained

282

An Elliptic Curve Processor Suitable For RFID-Tags L. Batina1, J. Guajardo2, T. Kerins2, N. Mentens1, P. Tuyls2, and I. Verbauwhede1  

E-Print Network [OSTI]

of sight, introduces a privacy threat. While walking home with tagged items in their bags, consumers canAn Elliptic Curve Processor Suitable For RFID-Tags L. Batina1, J. Guajardo2, T. Kerins2, N. Mentens.Guajardo,Tim.Kerins,Pim.Tuyls}@philips.com Abstract. RFID-Tags are small devices used for identification purposes in many applications nowa- days

283

A preliminary sub-basin scale evaluation framework of site suitability for onshore aquifer-based CO{sub 2} storage in China  

SciTech Connect (OSTI)

Development of a reliable, broadly applicable framework for the identification and suitability evaluation of potential CO{sub 2} storage sites is essential before large-scale deployment of carbon dioxide capture and geological storage (CCS) can commence. In this study, a sub-basin scale evaluation framework was developed to assess the suitability of potential onshore deep saline aquifers for CO{sub 2} storage in China. The methodology, developed in consultation with experts from the academia and the petroleum industry in China, is based on a multi-criteria analysis (MCA) framework that considers four objectives: (1) storage optimization, in terms of storage capacity and injectivity; (2) risk minimization and storage security; (3) environmental restrictions regarding surface and subsurface use; and (4) economic considerations. The framework is designed to provide insights into both the suitability of potential aquifer storage sites as well as the priority for early deployment of CCS with existing CO{sub 2} sources. Preliminary application of the framework, conducted using GIS-based evaluation tools revealed that 18% of onshore aquifer sites with a combined CO{sub 2} storage capacity of 746 gigatons are considered to exhibit very high suitability, and 11% of onshore aquifer sites with a total capacity of 290 gigatons exhibit very high priority opportunities for implementation. These onshore aquifer sites may provide promising opportunities for early large-scale CCS deployment and contribute to CO{sub 2} mitigation in China for many decades.

Wei, Ning; Li, Xiaochun; Wang, Ying; Dahowski, Robert T.; Davidson, Casie L.; Bromhal Grant S.

2013-01-01T23:59:59.000Z

284

Detection and Quantification of Methyl tert-Butyl Ether-Degrading Strain PM1 by Real-Time TaqMan PCR  

Science Journals Connector (OSTI)

...purification Fresh Water microbiology Geologic...Polymerase metabolism Water Pollution, Chemical...bioremediation detection ethers ground water hydrocarbons methyl tert-butyl...pollutants pollution remediation sampling water resources...

Krassimira R. Hristova; Christian M. Lutenegger; Kate M. Scow

2001-11-01T23:59:59.000Z

285

Condensation Reaction of Methyl N-Phenylcarbamate with Formaldehyde over H? Catalyst  

Science Journals Connector (OSTI)

During the condensation of N-methyl carbamate (MPC) with formaldehyde, liquid acid catalysts, such as H2SO4(12, 13) HCl,(14) and ZnCl2(15) have shown the best catalytic performance with water as a reaction medium. ... Using the organic solvents entails several challenges, such as the recovery and separation of solvents, and consequently increases the production cost. ... Finally, the temperature was increased under He atmosphere [50 cm3 (STP) minĖ1] at 10 įC minĖ1 and TPD profiles were recorded at temperatures up to 500 įC. ...

Fang Li; Rui Min; Jing Li; Liya Gao; Wei Xue; Yanji Wang; Xinqiang Zhao

2014-03-07T23:59:59.000Z

286

Isobaric vapor-liquid equilibria in the system methyl propanoate + n-butyl alcohol  

SciTech Connect (OSTI)

Isobaric vapor-liquid equilibria were determined at 74.66, 101.32, and 127.99 kPa for binary mixtures containing methyl propanoate + n-butyl alcohol by using a dynamic still with vapor and liquid circulation. No azeotrope was detected. The data were found to be thermodynamically consistent according to the point to point test. Application of the group-contribution models ASOG, UNIFAC, and modified UNIFAC to the activity coefficients at the three pressures studied gives average errors of less than 10%, 11%, and 3%, respectively.

Susial, P.; Ortega, J. (Univ. de Las Palmas de Gran Canaria, Canary Islands (Spain). Lab. de Termodinamica y Fisicoquimica)

1993-10-01T23:59:59.000Z

287

Characterization of the Deltaproteobacteria in Contaminated and Uncontaminated Surface Stream Sediments and Identification of Potential Mercury Methylators  

SciTech Connect (OSTI)

Microbial communities were examined in surface stream sediments at five contaminated sites and one control site near Oak Ridge, TN in order to identify bacteria that could be contributing to mercury methylation. The phylogenetic composition of the sediment bacterial community was examined over three quarterly sampling periods (36 samples) using 16s rRNA pyrosequencing. Only 3064 sequences (0.85 % of the total community) were identified as Deltaproteobacteria by the RDP classifier at the 99% confidence threshold. Constrained ordination techniques indicated significant positive correlations between Desulfobulbus spp., Desulfonema spp. and Desulfobacca spp. and methyl mercury concentrations in the contaminated sites. On the contrary, the distribution of organisms related to Byssovorax was significantly correlated to inorganic carbon, nitrate and uranium concentrations. Overall, the abundance and richness of Deltaproteobacteria sequences were higher in the sediments of the site, while the majority of the members present at the contaminated sites were either known metal reducers/methylators or metal tolerant species.

Mosher, Jennifer J [ORNL; Vishnivetskaya, Tatiana A [ORNL; Elias, Dwayne A [ORNL; Podar, Mircea [ORNL; Brooks, Scott C [ORNL; Brown, Steven D [ORNL; Brandt, Craig C [ORNL; Palumbo, Anthony Vito [ORNL

2012-01-01T23:59:59.000Z

288

Long-Range Ferromagnetic Ordering in Two-Dimensional Coordination Polymers Co[N(CN)2]2(L) [L ) Pyrazine Dioxide (pzdo) and 2-Methyl  

E-Print Network [OSTI]

) Pyrazine Dioxide (pzdo) and 2-Methyl Pyrazine Dioxide (mpdo)] with Dual ¬Ķ- and ¬Ķ3-[N(CN)2] Bridges Hao by the addition of ancillary ligands of pyrazine dioxide (pzdo) and 2-methyl pyrazine dioxide (mpdo) into the Co]- , possesses three coordination nitrogen atoms and several possible coordination modes: terminal, bidentate 1

Gao, Song

289

Polarization insensitive in-fiber mode-locker based on carbon nanotube with N-methyl-2-pryrrolidone solvent filled fiber microchamber  

E-Print Network [OSTI]

Polarization insensitive in-fiber mode-locker based on carbon nanotube with N-methyl-2-pryrrolidone://apl.aip.org/authors #12;Polarization insensitive in-fiber mode-locker based on carbon nanotube with N-methyl-2; published online 8 March 2012) We report an in-fiber laser mode locker based on carbon nanotube with n

Turitsyn, Sergei K.

290

Hydrogen Peroxide Acts as a Second Messenger for the Induction of Defense Genes in Tomato Plants in Response to Wounding, Systemin, and Methyl Jasmonate  

Science Journals Connector (OSTI)

...levels of proteinase inhibitor I in their leaves...systemin, OGA, chitosan, and the plant...accumulation of proteinase inhibitor I that was induced...systemin, OGA, and chitosan, as well as methyl...or 125 mug/mL chitosan or exposed to methyl...assayed for proteinase inhibitor I content in leaf...

Martha L. Orozco-C√°rdenas; Javier Narv√°ez-V√°squez; Clarence A. Ryan

291

Detailed chemical kinetic oxidation mechanism for a biodiesel Olivier Herbineta  

E-Print Network [OSTI]

experiments in an engine and oxidation of rapeseed oil methyl esters in a jet- stirred reactor. An important to biofuels and due to the presence of the ester group in the reactant. The model also predicts ignition delay

Paris-Sud XI, Université de

292

PROPERTY CHANGES OF CYANATE ESTER/EPOXY INSULATION SYSTEMS CAUSED BY AN ITER-LIKE DOUBLE IMPREGNATION AND BY REACTOR IRRADIATION  

SciTech Connect (OSTI)

Because of the double pancake design of the ITER TF coils the insulation will be applied in several steps. As a consequence, the conductor insulation as well as the pancake insulation will undergo multiple heat cycles in addition to the initial curing cycle. In particular the properties of the organic resin may be influenced, since its heat resistance is limited. Two identical types of sample consisting of wrapped R-glass/Kapton layers and vacuum impregnated with a cyanate ester/epoxy blend were prepared. The build-up of the reinforcement was identical for both insulation systems; however, one system was fabricated in two steps. In the first step only one half of the reinforcing layers was impregnated and cured. Afterwards the remaining layers were wrapped onto the already cured system, before the resulting system was impregnated and cured again. The mechanical properties were characterized prior to and after irradiation to fast neutron fluences of 1 and 2x10{sup 22} m{sup -2}(E>0.1 MeV) in tension and interlaminar shear at 77 K. In order to simulate the pulsed operation of ITER, tension-tension fatigue measurements were performed in the load controlled mode. The results do not show any evidence for reduced mechanical strength caused by the additional heat cycle.

Prokopec, R.; Humer, K.; Fillunger, H.; Maix, R. K.; Weber, H. W. [Atominstitut, Vienna University of Technology, 1020 Wien (Austria)

2010-04-08T23:59:59.000Z

293

Abscisic Acid and its Ŗ-D-Glucopyranosyl Ester in Saplings of Scots Pine (Pinus sylvestris L.) in Relation to Water Stress  

Science Journals Connector (OSTI)

Summary In different shoot parts of Scots pine saplings abscisic acid (ABA) and its Ŗ-D-glucopyranosyl ester (ABA-glu) have been identified by chromatographical methods and mass spectrometry. Changes in the endogenous levels of ABA and its main metabolite ABA-glu have been determined by gas chromtography in relation to water stress (1, 2 and 4 h) and rewatering (30 min and 4 h). At the beginning of water stress ABA increased in young shoots and the needles of older parts, but decreased in the axis. Simultaneously an ABA-glu peak occurred especially in the needles indicating that both ABA biosynthesis and metabolism are stimulated by water stress. During 30 min rewatering the ABA level increased in all shoot parts, most intensively in the axis. From the results obtained it can be concluded that the increase of free ABA level at the beginning of water stress is based mainly on ABA biosynthesis, whereas during rewatering a partial re-activation of ABA-glu might be involved.

E. Hoque; W. Dathe; M. Tesche; G. Sembdner

1983-01-01T23:59:59.000Z

294

Wear of poly (methyl methacrylate) against a metallic surface in dry Jean Geringer, Bernard Forest, Pierre Combrade  

E-Print Network [OSTI]

@emse.fr b Centre technique Framatome-ANP 1, rue B. Marcet F-71205 Le Creusot Cedex Abstract Wear of Poly1 Wear of poly (methyl methacrylate) against a metallic surface in dry conditions Jean Geringer, femoral stem-bone cement in the field of hip prosthesis. First of all, no significant wear was observed

Paris-Sud XI, Université de

295

The Acquisition of hMLH1 Methylation in Plasma DNA after Chemotherapy Predicts Poor Survival for Ovarian Cancer Patients  

Science Journals Connector (OSTI)

...died, giving the methylation study 74% power to detect a hazard ratio of 2 for the effect...subgroup analysis and greatly weaken the power of the statistical analysis. However...Sci USA, 95: 6870-5, 1998. 23 De Wind N, Dekker M, van Rossum A, et al Mouse...

Gillian Gifford; Jim Paul; Paul A. Vasey; Stanley B. Kaye; and Robert Brown

2004-07-01T23:59:59.000Z

296

Reaction of trans-dichloro-bis[N(1)-methyl-2-(arylazo)imidazole] ruthenium(II) with tertiary phosphines  

Science Journals Connector (OSTI)

Trans-dichloro-bis[N(1)-methyl-2-(arylazo)imidazol e] ruthenium(II) (tcc-Ru(MeL)2Cl2) reacts with tertiary phosphines giving rise to species of type [RuCl(P)-(MeL)2]+ and [Ru(P-P)(MeL)2]2+ in which Cl, P and P...

Tarun Kumar Misra; Chittaranjan Sinha

1999-04-01T23:59:59.000Z

297

MODELING FRETTING-CORROSION WEAR OF 316L SS AGAINST POLY(METHYL METHACRYLATE) WITH THE POINT DEFECT  

E-Print Network [OSTI]

1 MODELING FRETTING-CORROSION WEAR OF 316L SS AGAINST POLY(METHYL METHACRYLATE) WITH THE POINT; ddm2@psu.edu c Center of Research Excellence in Corrosion Research Institute King Fahd University at investigating experimentally fretting corrosion, that is, corrosion induced by friction of AISI 316L SS against

Boyer, Edmond

298

Regionally Specific and Genome-Wide Analyses Conclusively Demonstrate the Absence of CpG Methylation in Human Mitochondrial DNA  

Science Journals Connector (OSTI)

...genome-wide in vertebrate nuclear DNA, the state of methylation...cytosines at non-CpG sites in the nuclear DNA in these studies ranged...Table 6 Analysis of published datasets of genome-wide sodium bisulfite...Cs in mtDNA At non-CpGs in nuclear DNA Akalin et al. (10) a...

Elizabeth E. Hong; Cindy Y. Okitsu; Andrew D. Smith; Chih-Lin Hsieh

2013-05-13T23:59:59.000Z

299

Abstract 4242: Methylation, SNP and expression analysis of the Vitamin D receptor (VDR) gene in different tumor tissues.  

Science Journals Connector (OSTI)

...receptor (VDR) gene in different tumor tissues. Matthew L. Poulin Ann Meyer Gregory Gonzalez Kevin Bi Liying Yan EpigenDx, Inc...biomarkers for different cancers. Citation Format: Matthew L. Poulin, Ann Meyer, Gregory Gonzalez, Kevin Bi, Liying Yan. Methylation...

Matthew L. Poulin; Ann Meyer; Gregory Gonzalez; Kevin Bi; Liying Yan

2013-08-14T23:59:59.000Z

300

Abstract 1360: DNA methylation analysis in self-sampled material as a triage test in hrHPV positive women  

Science Journals Connector (OSTI)

...in self-sampled material as a triage test in hrHPV positive women Aniek Boers 1 Remko...DNA methylation analysis as a triage test in hrHPV positive women outperformed cytology...in self-sampled material as a triage test in hrHPV positive women. [abstract...

Aniek Boers; Remko P. Bosgraaf; Roland W. van Leeuwen; Ed Schuuring; Leon FAG Massuger; Johan Bulten; Willem J. Melchers; Ate GJ van der Zee; Ruud L. Bekkers; Bea Wisman

2014-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Class I Chitinase and -1,3-Glucanase Are Differentially Regulated by Wounding, Methyl Jasmonate, Ethylene, and  

E-Print Network [OSTI]

, Ethylene, and Gibberellin in Tomato Seeds and Leaves1 Chun-Ta Wu2 and Kent J. Bradford* Department. Wounding and methyl jasmonate (MeJA) induced Chi9 expression, whereas ethylene, abscisic acid, sodium. However, MeJA, wounding, and particularly ethylene induced both genes in leaves, whereas GA induced only

Bradford, Kent

302

Gas-Phase Identity SN2 Reactions of Halide Anions and Methyl Halides with Retention of Configuration  

E-Print Network [OSTI]

Gas-Phase Identity SN2 Reactions of Halide Anions and Methyl Halides with Retention back-side and front-side SN2 reactions are found to involve the same ion-molecule complex (X-,,,H3CX of a front-side SN2 reaction with retention of configuration at saturated carbon. Analysis of our

Schlegel, H. Bernhard

303

3-Methyl-1,2-BN-Cyclopentane: A Promising H2 Storage Material?  

SciTech Connect (OSTI)

We provide detailed characterization of properties for 3-methyl-1,2-BN-cyclopentane 1 that are relevant to H2 storage applications such as viscosity, thermal stability, H2 gas stream purity, and polarity. The viscosity of 1 at room temperature is 25Ī5 cP, about one fourth the viscosity of olive oil. TGA/MS analysis indicates that liquid carrier 1 is thermally stable at 30 įC but decomposes slowly at 50 įC. RGA data suggest that the H2 desorption from 1 is a clean process, producing relatively pure H2 gas. Compound 1 is a polar zwitterionic type liquid consistent with theoretical predictions and solvatochromic studies. "T.A. acknowledges support from the Fuel Cell Technology Program at U.S. DOE, Office of Energy Efficiency 65 and Renewable Energy. Pacific Northwest National Laboratory is operated by Battelle."

Luo, Wei; Neiner, Doinita; Karkamkar, Abhijeet J.; Parab, Kshitij; Garner, Edward B.; Dixon, David A.; Matson, Dean W.; Autrey, Thomas; Liu, Shih-Yuan

2013-01-21T23:59:59.000Z

304

Energy Saving in Conventional and Unconventional Batch Reactive Distillation: Application to Hydrolysis of Methyl Lactate System  

Science Journals Connector (OSTI)

Abstract In this work, energy consumption in a middle vessel batch reactive distillation (MVBRD) column is considered for the production of lactic acid via hydrolysis of methyl lactate. A dynamic optimization problem incorporating a process model is formulated to minimize the batch time which consequently minimizes the total energy consumption. The problem is subject to constraints on the amount and purity of lactic acid. The optimisation variables are reflux ratio and/or reboil ratio which are treated as piecewise constant. The earlier work of the authors on energy consumption in conventional batch reactive distillation column (CBRD) for the same reaction system is used for comparative analysis with the energy consumption in MVBRD. As an example, for a given separation task, the optimization results show that MVBRD is capable of saving over 23†% energy compared to energy consumption in CBRD column for the same task.

Elmahboub A. Edreder; Mansour Emtir; Iqbal M. Mujtaba

2014-01-01T23:59:59.000Z

305

Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film  

SciTech Connect (OSTI)

The Raman spectra of bilayer graphene covered with poly(methyl methacrylate) (PMMA) were investigated. Both the G and 2D peaks of PMMA-coated graphene were stiff and broad compared with those of uncovered graphene. This could be attributed to the residual strain induced by high-temperature baking during fabrication of the nanodevice. Furthermore, the two 2D peaks stiffened and broadened with increasing laser power, which is just the reverse to uncovered graphene. The stiffness is likely caused by graphene compression induced by the circular bubble of the thin PMMA film generated by laser irradiation. Our findings may contribute to the application of PMMA in the strain engineering of graphene nanodevices.

Xia Minggang [MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, 710049 (China); Center on Experimental Physics, School of Science, Xi'an Jiaotong University, 710049 (China); Su Zhidan; Zhang Shengli [MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, 710049 (China); Department of Applied Physics, School of Science, Xi'an Jiaotong University, 710049 (China)

2012-09-15T23:59:59.000Z

306

Heterogeneous catalyst for the production of acetic anhydride from methyl acetate  

DOE Patents [OSTI]

This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.

Ramprasad, D.; Waller, F.J.

1999-04-06T23:59:59.000Z

307

Heterogeneous catalyst for the production of acetic anhydride from methyl acetate  

DOE Patents [OSTI]

This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.

Ramprasad, Dorai (Allentown, PA); Waller, Francis Joseph (Allentown, PA)

1999-01-01T23:59:59.000Z

308

Isomerization of methyl linoleate on ruthenium(III) alkoxide complex; Mathematical modeling  

SciTech Connect (OSTI)

The isomerization of methyl linoleate using ruthenium alkoxide complexes is described. With alcohols, such as isopropyl alcohol (IPA), 1-butanol, 1-hexanol, and 1-octanol, isomerization of double bonds to produce a conjugated system is the main reaction, with hydrogenation being the side reaction. The latter is formed via the conjugated product. Based on kinetic and infrared spectroscopic data, it is concluded that the active catalytic species is a ruthenium hydride complex formed by the decomposition of the unstable alkoxide. The reaction is mathematically modeled, and the rate parameters are obtained by fitting the simulation to experimental data. These values are compared with data obtained from reactions carried out with supported ruthenium-nickel heterogeneous catalyst.

Mukesh, D.; Narasimhan, C.S.; Ramnarayan, K.; Deshpande, V.M

1989-08-01T23:59:59.000Z

309

Embedded Piezoresistive Microcantilever Sensors Functionalized for the Detection of Methyl Salicylate  

SciTech Connect (OSTI)

Sensors designed to detect the presence of methyl salicylate (MeS) have been tested. These sensors use a sensor platform based on the embedded piezoresistive microcantilever (EPM) design. Sensing materials tested in this study included the polymer poly (ethylene vinyl acetate), or PEVA as well as a composite sensing material consisting of the enzyme SA-binding protein 2, or SABP-2. The SABP-2 was immobilized within a biocompatible Hypol gel matrix. The PEVA-based sensors exhibited slower but reversible responses to MeS vapors, recovering fully to their initial state after the analyte was removed. SABP-2 sensors exhibited faster overall response to the introduction of MeS, responding nearly instantly. These sensors, however, do not recover after exposures have ended. Sensors using the SABP-2 sensing materials act instead as integrating sensors, measuring irreversibly the total MeS dose obtained.

Porter, T. L. [UNLV; Venedam, R. J. [NSTec

2013-03-01T23:59:59.000Z

310

Methyl Chloride from Direct Methane Partial Oxidation: A High-Temperature Shilov-Like Catalytic System  

SciTech Connect (OSTI)

The intention of this study is to demonstrate and evaluate the scientific and economic feasibility of using special solvents to improve the thermal stability of Pt-catalyst in the Shilov system, such that a high reaction temperature could be achieved. The higher conversion rate (near 100%) of methyl chloride from partial oxidation of methane under the high temperature ({approx} 200 C) without significant Pt0 precipitation has been achieved. High concentration of the Cl- ion has been identified as the key for the stabilization of the Pt-catalysts. H/D exchange measurements indicated that the over oxidation will occur at the elevated temperature, developments of the effective product separation processes will be necessary in order to rationalize the industry-visible CH4 to CH3Cl conversion.

Yongchun Tang; John (Qisheng) Ma

2012-03-23T23:59:59.000Z

311

Evaluation of Suitability of Selected Set of Department of Defense Military Bases and Department of Energy Facilities for Siting a Small Modular Reactor  

SciTech Connect (OSTI)

This report summarizes the approach that ORNL developed for screening a sample set of US Department of Defense (DOD) military base sites and DOE sites for possible powering with an SMR; the methodology employed, including spatial modeling; and initial results for several sample sites. The objective in conducting this type of siting evaluation is demonstrate the capability to characterize specific DOD and DOE sites to identify any particular issues associated with powering the sites with an SMR using OR-SAGE; it is not intended to be a definitive assessment per se as to the absolute suitability of any particular site.

Poore III, Willis P [ORNL; Belles, Randy [ORNL; Mays, Gary T [ORNL; Omitaomu, Olufemi A [ORNL

2013-03-01T23:59:59.000Z

312

A STUDY OF FUNDAMENTAL REACTION PATHWAYS FOR TRANSITION METAL ALKYL COMPLEXES. I. THE REACTION OF A NICKEL METHYL COMPLEX WITH ALKYNES. II. THE MECHANISM OF ALDEHYDE FORMATION IN THE REACTION OF A MOLYBDENUM HYDRIDE WITH MOLYBDENUM ALKYLS  

SciTech Connect (OSTI)

I. This study reports the rapid reaction under mild conditions of internal or terminal alkynes with methyl (acetyl~ acetonato) (triphenylphosphine) nickel (1) in either aromatic or ether solvents. In all cases vinylnickel products 2 are formed by insertion of the alkyne into the nickel=methyl bond. These complexes may be converted into a variety of organic products (e.g. alkenes, esters, vinyl halides) by treatment with appropriate reagents. Unsymmetrical alkynes give selectively the one regioisomer with the sterically largest substituent next to the nickel atom. In order to investigate the stereochemistry of the initial insertion, a x-ray diffraction study of the reaction of 1 with diphenylacetylene was carried out. This showed that the vinylnickel complex formed by overall trans insertion was the product of the reaction. Furthermore, subsequent slow isomerization of this complex, to a mixture of it and the corresponding cis isomer, demonstrated that this trans addition product is the kinetic product of the reaction. In studies with other alkynes, the product of trans addition was not always exclusively (or even predominantly) formed, but the ratio of the stereoisomers formed kinetically was substantially different from the thermodynamic ratio. Isotope labeling, added phosphine, and other experiments have allowed us to conclude that the mechanism of this reaction does involve initial cis addition. However, a coordinatively unsaturated vinylnickel complex is initially formed which can undergo rapid, phosphine-catalyzed cis-trans isomerization in competition with its conversion to the isolable phosphine-substituted kinetic reaction products. II. The reaction of CpMo(CO){sub 3}H (1a) with CpMo(CO){sub 3}R (2, R= CH{sub 3}, C{sub 2}H{sub 5}) at 50{degrees} C in THF gives the aldehyde RCHO and the dimers [CpMo(CO){sub 3}]{sub 2} (3a) and [CpMo(CO){sub 2}]{sub 2} (4a). Labeling one of the reactants with a methylcyclopentadienyl ligand it was possible to show that the mixed dimers MeCpMo(CO){sub 3}-(CO){sub 3}MoCp (3b) and MeCpMo(CO){sub 2}{triple_bond}(CO){sub 2}MoCp (4b) are the predominant kinetic products of the reaction. Additionally labeling the carbonyl ligands of 1a with {sup 13}CO led to the conclusion that all three of the carbonyl ligands in 1a end up in the tetracarbonyl dimers 4a if the reaction is carried out under a continuous purge of argon Trapping studies failed to find any evidence for the intermediacy of either [CpMo(CO){sub 3}]{sup -} or [CpMo(CO){sub 3}]{sup +} in this reaction. A mechanism is proposed that involves the initial migration of the alkyl ligand in 2 to CO forming an unsaturated acyl complex which reacts with 1a to give a binuclear complex containing a three center-two electron Mo-H-Mo bond. This complex then selectively looses a carbonyl from the acyl molybdenum, migrates the hydride to that same metal, and forms a metal-metal bond. This binuclear complex with the hydride and acyl ligands on one metal reductively eliminates aldehyde, and migrates a carbonyl ligand, to give 4a directly. The other product 3a is formed by addition of two molecules of free CO to 4a.

Huggins, John Mitchell

1980-06-01T23:59:59.000Z

313

Tyrosine hydroxylase is activated and phosphorylated at different sites in rat pheochromocytoma PC 12 cells treated with phorbol ester and forskolin  

SciTech Connect (OSTI)

The effects of phorbol ester (4..beta..-phorbol, 12..beta..-myristate, 13..cap alpha..-acetate; TPA), an activator of Ca/sup + +//phospholipid-dependent protein kinase (PK-C), and forskolin, which stimulates adenylate cyclase and cyclic AMP-dependent protein kinase (cAMP-PK), on the activation and phosphorylation of tyrosine hydroxylase (TH) in rat pheochromocytoma (PC 12) cells were examined. Incubation of the cells with TPA (0.01-1 ..mu..M) or forskolin (0.01-0.1 ..mu..M) produces increases in activation and phosphorylation of TH in a concentration-dependent manner. The stimulatory effects of TPA are dependent on extracellular Ca/sup + +/ and are inhibited by pretreatment of the cells with trifluoperazine (TFP). The effects of forskolin are independent of Ca/sup + +/ and are not inhibited by TFP. In cells treated with forskolin, the time course of the increase in cAMP correlates with the increases in TH activity and phosphorylation. cAMP levels do not increase in cells treated with TPA. There is an increase in the phosphorylation of only one tryptic phosphopeptide derived from TH in cells treated with either forskolin or TPA. The peptide phosphorylated in TPA-treated cells exhibits different elution characteristics on HPLC from that in forskolin-treated cells. The authors conclude that TH in PC 12 cells is phosphorylated on different sites by cAMP-PK and PK-C. Phosphorylation of either of these sites is associated with enzyme activation.

Tachikawa, E.; Tank, A.W.; Weiner, D.H.; Mosimann, W.F.; Yanagihara, N.; Weiner, N.

1986-03-01T23:59:59.000Z

314

Download Full-text PDF  

Science Journals Connector (OSTI)

M. HALE cannot be resolved in view of the primi-. Department of Mechanical Engineering, tive state of ... sis of the methyl esters by gas-liquid chro- matography†...

2000-02-13T23:59:59.000Z

315

33rd International Symposium on Combustion Hottel Lecture Application...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Delay Times * Species Time-Histories * Reaction Rate Constants * Methyl Ester Studies * Ignition Delay Times Long-Term Objectives * Generate high-quality fundamental kinetics...

316

Chemistry: Theory - Combustion Energy Frontier Research Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Theory Chemistry: Theory Presentations from 2010 CEFRC First Annual Conference MultireferenceCorrelated WavefunctionCalculations and Reaction Flux Analyses of Methyl Ester...

317

Biodiesel from Used Frying Oil. Variables Affecting the Yields and Characteristics of the Biodiesel  

Science Journals Connector (OSTI)

Biodiesel from Used Frying Oil. ... The objective of the work was to characterize the methyl esters for use as biodiesels in compression ignition motors. ...

Josť M. Encinar; Juan F. GonzŠlez; Antonio RodrŪguez-Reinares

2005-06-15T23:59:59.000Z

318

Report of the Peer Review Panel on the early site suitability evaluation of the Potential Repository Site at Yucca Mountain, Nevada; Yucca Mountain Site Characterization Project  

SciTech Connect (OSTI)

The US Department of Energy (DOE) Yucca mountain Site Characterization Project Office (YMPO) assigned Science Applications International Corporation (SAIC), the Technical and Management Support Services (T&MSS) contractor to the YmPo, the task of conducting an Early Site Suitability Evaluation (ESSE) of the Yucca mountain site as a potential site for a high-level radioactive waste repository. First, the assignment called for the development of a method to evaluate a single site against the DOE General Guidelines for Recommendation of Sites for Nuclear Waste Repositories, 10 CFR Part 960. Then, using this method, an evaluation team, the ESSE Core Team, of senior YMP scientists, engineers, and technical experts, evaluated new information obtained about the site since publication of the final Environmental Assessment (DOE, 1986) to determine if new suitability/unsuitability findings could be recommended. Finally, the Core Team identified further information and analyses needed to make final determinations for each of the guidelines. As part of the task, an independent peer review of the ESSE report has been conducted. Expertise was solicited that covered the entire spectrum of siting guidelines in 10 CFR Part 960 in order to provide a complete, in-depth critical review of the data evaluated and cited in the ESSE report, the methods used to evaluate the data, and the conclusions and recommendations offered by the report. Fourteen nationally recognized technical experts (Table 2) served on the Peer Review Panel. The comments from the Panel and the responses prepared by the ESSE Core Team, documented on formal Comment Response Forms, constitute the body of this document.

NONE

1992-01-01T23:59:59.000Z

319

Whole Genome Analysis of Functional Protein Binding Sites and DNA Methylation: Application to p53 and Low Dose Ionizing Radiation.  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Whole Genome Analysis of Functional Protein Binding Sites and DNA Methylation: Whole Genome Analysis of Functional Protein Binding Sites and DNA Methylation: Application to p53 and Low Dose Ionizing Radiation. Krassimira Botcheva, John J. Dunn and Carl W. Anderson Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA The effects of exposure to low doses of ionizing radiation on humans results largely from changes in gene expression mediated by the activation of sequence-specific DNA binding proteins (transcription factors) as well as changes to other chromosomal proteins and perhaps to DNA. To develop a molecular understanding of the consequences of exposures to low doses of ionizing radiation, it will be necessary to understanding where radiation-activated transcription factors bind in whole genomes and how

320

4-O-Methyl-?-l-idopyranosyluronic acid linked to xylan from kraft pulp: isolation procedure and characterisation by NMR spectroscopy  

Science Journals Connector (OSTI)

The tetrasaccharide 2?-O-(4-O-methyl-?-l-idopyranosyluronic acid)xylotriose was isolated from enzymatically hydrolysed, unbleached, birch kraft pulp by anion-exchange chromatography in two steps. The primary structure of the tetrasaccharide was determined by 1H and 13C NMR spectroscopy, using homonuclear and heteronuclear two-dimensional techniques. NOE data and 3JH.H coupling constants show that the 4-O-methyl-?-l-idopyranosyluronic acid in the tetrasaccharide is predominantly in the 1C4 chair conformation. The pKa value (3.17) for 4-O-methyliduronic acid attached ?-(1 ? 2) to xylose was determined from the pH-dependent chemical shift of H-5. The amount of 4-O-methyliduronic acid (0.1Ė0.5 mol%) in surface xylan of unbleached birch and pine kraft pulps was determined by extensive xylanase treatment and further analysis by NMR spectroscopy and high-performance anion-exchange chromatography.

Anita Teleman; Matti Siika-aho; Harri Sorsa; Johanna Buchert; Marjukka Perttula; Tiina Hausalo; Maija Tenkanen

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Bioaccumulation of triclocarban, triclosan, and methyl-triclosan in a North Texas wastewater treatment plant receiving stream and effects of triclosan on algal lipid synthesis.  

E-Print Network [OSTI]

??Triclosan (TCS) and triclocarban (TCC), widely used antimicrobial agents found in numerous consumer products, are incompletely removed by wastewater treatment plant (WWTP) processing. Methyl-triclosan (M-TCS)Ö (more)

Coogan, Melinda Ann

2007-01-01T23:59:59.000Z

322

Hydrolysis of cellulose to produce glucose with solid acid catalysts in 1-butyl-3-methyl-imidazolium chloride ([bmIm][Cl]) with sequential water addition  

Science Journals Connector (OSTI)

Selective glucose production by cellulose hydrolysis with initial or sequential water addition in the presence of solid acid catalysts in 1-butyl-3-methyl-imidazolium chloride ([bmIm][Cl]) under microwave irra...

Kaori Ishida; Shiho Matsuda; Masaru WatanabeÖ

2014-12-01T23:59:59.000Z

323

Effect of monomer/nanoclay interaction on the kinetics of atom transfer radical homo- and copolymerization of styrene and methyl acrylate  

Science Journals Connector (OSTI)

Atom transfer radical homo- and copolymerization of styrene and methyl acrylate initiated with CCl3...-terminated poly(vinyl acetate) macroinitiator were performed at 90įC in the presence of nanoclay (Cloisite 30...

Mahdi Abdollahi; Mohammad Ali Semsarzadeh

2012-04-01T23:59:59.000Z

324

Study on PCB 101, PCB 153, mercury and methyl mercury content in blue crab Portunus Pelagicus from Khuzestan shore (Persian Gulf)  

Science Journals Connector (OSTI)

Distribution of polychlorinated biphenyl (PCB 101, PCB 153), Mercury (Hg) and methyl mercury (MMHg) in muscle, gill and hepatopancreas of blue swimming crab Portunus segnis from Persian Gulf were investigated. In...

Abdolah Raeisi Sarasiab; Mehdi Hosseini

2014-06-01T23:59:59.000Z

325

Oxidation Kinetics of Pure and Blended Methyl Octanoate/n-Nonane/Methylcyclohexane: Measurements and Modeling of OH*/CH* Chemiluminescence, Ignition Delay Times and Laminar Flame Speeds  

E-Print Network [OSTI]

fuels at 1.5 atm indicated the following ignition delay time order, from shortest to longest: methyl octanoate atm (nominal) the order remained, in general, consistent. Under fuel-lean conditions, ignition...

Rotavera, Brandon Michael

2012-07-16T23:59:59.000Z

326

Hydrogenolysis of methyl formate over copper on silica. I. Study of surface species by in situ infrared spectroscopy  

SciTech Connect (OSTI)

The hydrogenolysis of methyl formate to methanol over silica-supported copper has been studied using in situ infrared spectroscopy coupled with simultaneous determination of rate. Under flow reaction conditions two forms of adsorbed methyl formate exist. One has a carbonyl absorption at 1726 cm/sup -1/ and is bound to the support by the hydrogen bonding with a heat of adsorption of 65 kJ mol/sup -1/. The second absorbs at 1666 cm/sup -1/ and is bound to copper with an approximate heat of adsorption of 140 kJ mol/sup -1/. At 457 K the hydrogenolysis rate is directly proportional to the band intensity of the latter and hence it, or another species in equilibrium with it, is involved in the rate-determining step. Adsorption of CO from CO/H/sub 2/ mixtures gives rise to a single infrared band at 2117 cm/sup -1/, the corresponding heat of adsorption being 60 kJ mol/sup -1/. Competitive measurements under hydrogenolysis conditions show that methyl formate will partially displace adsorbed CO and not vice versa. Nonetheless CO does reversibly inhibit the rate and this is attributed to its adsorption displacing hydrogen from the surface. The lower concentration of surface hydrogen also reduces the rate of hydrogenation of a formaldehyde intermediate leading to its deposition as a polymer as revealed by infrared bands at 1483 and 1375 cm/sup -1/. The same polymer accretes more rapidly during the reverse methanol to methyl formate reaction for which CO is a substantial by-product and hydrogen pressures are much lower than used for hydrogenolysis. Continuous deactivation of the catalyst is then observed.

Monti, D.M.; Cant, N.W.; Trimm, D.L.; Wainwright, M.S.

1986-07-01T23:59:59.000Z

327

Durability of Poly(Methyl Methacrylate) Lenses Used in Concentrating Photovoltaic Modules: Preprint  

SciTech Connect (OSTI)

Concentrating photovoltaic (CPV) technology has recently gained interest based on their expected low levelized cost of electricity, high efficiency, and scalability. Many CPV systems use Fresnel lenses made of poly(methyl methacrylate)(PMMA) to obtain a high optical flux density. The optical and mechanical durability of such components, however, are not well established relative to the desired service life of 30 years. Specific reliability issues may include: reduced optical transmittance, discoloration, hazing, surface erosion, embrittlement, crack growth, physical aging, shape setting (warpage), and soiling. The initial results for contemporary lens- and material-specimens aged cumulatively to 6 months are presented. The study here uses an environmental chamber equipped with a xenon-arc lamp to age specimens at least 8x the nominal field rate. A broad range in the affected characteristics (including optical transmittance, yellowness index, mass loss, and contact angle) has been observed to date, depending on the formulation of PMMA used. The most affected specimens are further examined in terms of their visual appearance, surface roughness (examined via atomic force microscopy), and molecular structure (via Fourier transform infrared spectroscopy).

Miller, D. C.; Gedvilas, L. M.; To, B.; Kennedy, C. E.; Kurtz, S. R.

2010-08-01T23:59:59.000Z

328

Re-refining of waste mineral insulating oil by extraction with N-methyl-2-pyrrolidone  

Science Journals Connector (OSTI)

Extraction with N-methyl-2-pyrrolidone (NMP) via the three-stage mixerĖsettler operation was studied as possible process for re-refining of waste mineral insulating oil. The following extraction process parameters were investigated systematically in order to determine their optimum values: amount of water as co-solvent in NMP, extraction temperature and solvent/oil ratio. The process parameters and resulting oil chemical compositions were found to influence the electrical properties and the oxidation stability of the re-refined oil. The levels of aromatic, paraffinic and polycyclic aromatic hydrocarbons were determined using IR spectroscopy and HPLC, while other relevant chemical and electrical properties of waste and re-refined oil were determined according to IEC, ISO and ASTM standards. Extraction using NMP was found to be an adequate method for waste mineral insulating oil re-refining, according to the application properties of the re-refined oil. Moderate extraction temperature, 1% water in NMP and a low solvent/oil ratio (0.5) were determined to be the optimum process parameters.

Jelena Luki?; Aleksandar Orlovi?; Michael Spiteller; Jovan Jovanovi?; Dejan Skala

2006-01-01T23:59:59.000Z

329

Effect of reticuloendothelial system blockade on the biotransformation of methyl mercury in the rat  

SciTech Connect (OSTI)

It has been reported that methyl mercury (MeHg) administered to animals is biotransformed to inorganic mercury. Several studies have presented that there are two degradation process, by intestinal microflora and by animal tissues themselves. In a previous paper, the authors reported the biotransformation of MeHg in the rat was enhanced by phenylhydrazine administration, and inhibited by splenectomy or treatment with carrageenan (CAR). They suggested that spleen and liver might be the important sites for formation of inorganic mercury, and that reticuloendothelial system (RES) cells in these organs might play a major role in this biotransformation. The clearance activity of RES cells, mainly located in the liver and spleen, can be depressed by saturating those cells with CAR, colloidal carbon (CC), trypan blue (TB), colloidal iron (CFe), dextran sulfate, silica. The purpose of this study is to confirm the relationship between RES function and biotransformation of MeHg by using four representative blockers, CC, TB, CFe and CAR. The inhibited biotransformation of MeHg in RES-blocker-treated rats was evaluated by measuring the amount of total and inorganic mercury in tissues. On the other hand, RES cell activity was measured by carbon clearance tests.

Suda, Ikuo; Takahashi, Hitoshi (Kumamoto Univ. Medical School (Japan))

1990-04-01T23:59:59.000Z

330

The dependence of the methylation of mercury on the landfill stabilization process and implications for the landfill management  

Science Journals Connector (OSTI)

Abstract Mercury species and other chemical characteristics of the leachate from anaerobic and semi-aerobic landfills were analyzed to investigate the factors that control mercury methylation during the landfill stabilization process. At the early landfill stage, the total mercury (THg) and the monomethyl mercury (MMHg) released rapidly and significantly, the \\{THg\\} concentration of the semi-aerobic landfill leachate was obviously higher than that of the anaerobic landfill leachate, while compared with the semi-aerobic landfill, the \\{MMHg\\} concentration in the anaerobic landfill was higher. As the landfill time increased, both of \\{THg\\} and \\{MMHg\\} concentration decreased quickly, the \\{THg\\} concentration in the anaerobic landfill was much higher than that in semi-aerobic landfill, while the \\{MMHg\\} concentration in the anaerobic landfill was lower than that in the semi-aerobic landfill. Generally, the concentrations of dimethyl mercury (DMHg) in the anaerobic landfill leachate were slightly higher than in the semi-aerobic landfill leachate during the stabilization process. A significant positive correlation was found between the \\{DMHg\\} concentrations and the pH value in anaerobic landfill leachate, but this correlation was opposite in the semi-aerobic landfill. The oxidativeĖreductive potential (ORP) condition was found to be the controlling factor of the methylation process during the early stage. However, the chemical characteristics, especially the TOC concentration, appeared to be the dominant factor affecting the methylation process as the landfill time increased.

Xiaoli Chai; Yongxia Hao; Zhonggen Li; Wei Zhu; Wentao Zhao

2015-01-01T23:59:59.000Z

331

Biodiesel production from vegetable oil and waste animal fats in a pilot plant  

Science Journals Connector (OSTI)

Abstract In this study, corn oil as vegetable oil, chicken fat and fleshing oil as animal fats were used to produce methyl ester in a biodiesel pilot plant. The FFA level of the corn oil was below 1% while those of animal fats were too high to produce biodiesel via base catalyst. Therefore, it was needed to perform pretreatment reaction for the animal fats. For this aim, sulfuric acid was used as catalyst and methanol was used as alcohol in the pretreatment reactions. After reducing the FFA level of the animal fats to less than 1%, the transesterification reaction was completed with alkaline catalyst. Due to low FFA content of corn oil, it was directly subjected to transesterification. Potassium hydroxide was used as catalyst and methanol was used as alcohol for transesterification reactions. The fuel properties of methyl esters produced in the biodiesel pilot plant were characterized and compared to EN 14214 and ASTM D6751 biodiesel standards. According to the results, ester yield values of animal fat methyl esters were slightly lower than that of the corn oil methyl ester (COME). The production cost of COME was higher than those of animal fat methyl esters due to being high cost biodiesel feedstock. The fuel properties of produced methyl esters were close to each other. Especially, the sulfur content and cold flow properties of the COME were lower than those of animal fat methyl esters. The measured fuel properties of all produced methyl esters met ASTM D6751 (S500) biodiesel fuel standards.

Ertan Alptekin; Mustafa Canakci; Huseyin Sanli

2014-01-01T23:59:59.000Z

332

Acetylene Ester from Aster spinosus  

Science Journals Connector (OSTI)

...STUDIES RELATED TO NATURALLY-OCCURING ACETYLENE COMPOUNDS .6...knowl-edge of the structures of naturally-occurring acetylenes may...ultra-violet or other radiation, or heat was applied to the...conditions which might have arisen naturally can be approximated by thermodynamic...

Jeffrey C. Spitzer; Cornelius Steelink

1964-12-11T23:59:59.000Z

333

Sugar Esters: Fact or Fantasy?  

Science Journals Connector (OSTI)

Sugar Research Foundation gets broad process patent, but cost, process problems slow commercialization ... Many are plagued by scaleup and other process snags. ...

1959-07-13T23:59:59.000Z

334

Delayed neurotoxicity of phenylphosphonothioate esters  

Science Journals Connector (OSTI)

...Moscovitch, in Handbook of Behavioral Neurobiology...Grason-Stadler power supply (Model E...visual and motor systems. In this connection...central ner-vous system cannot. The observation...regeneration or restoration of function of the...cen-tral nervous system. Application of...

MB Abou-Donia

1979-08-17T23:59:59.000Z

335

Methyl-parathion decreases sperm function and fertilization capacity after targeting spermatocytes and maturing spermatozoa  

SciTech Connect (OSTI)

Paternal germline exposure to organophosphorous pesticides (OP) has been associated with reproductive failures and adverse effects in the offspring. Methyl parathion (Me-Pa), a worldwide-used OP, has reproductive adverse effects and is genotoxic to sperm. Oxidative damage has been involved in the genotoxic and reproductive effects of OP. The purpose of this study was to determine the effects of Me-Pa on spermatozoa function and ability to fertilize. Male mice were exposed to Me-Pa (20 mg/kg bw, i.p.) and spermatozoa from epididymis-vas deferens were collected at 7 or 28 days post-treatment (dpt) to assess the effects on maturing spermatozoa and spermatocytes, respectively. DNA damage was evaluated by nick translation (NT-positive cells) and SCSA (percentDFI); lipoperoxidation (LPO) by malondialdehyde production; sperm function by spontaneous- and induced-acrosome reactions (AR); mitochondrial membrane potential (MMP) by using the JC-1 flurochrome; and, fertilization ability by an in vitro assay and in vivo mating. Results showed alterations in DNA integrity (percentDFI and NT-positive cells) at 7 and 28 dpt, in addition to decreased sperm quality and a decrease in induced-AR; reduced MMP and LPO was observed only at 7 dpt. We found negative correlations between LPO and all sperm alterations. Altered sperm functional parameters were associated with reduced fertilization rates at both times, evaluated either in vitro or in vivo. These results show that Me-Pa exposure of maturing spermatozoa and spermatocytes affects many sperm functional parameters that result in a decreased fertilizing capacity. Oxidative stress seems to be a likely mechanism ofthe detrimental effects of Me-Pa in male germ cells.

Pina-Guzman, Belem; Sanchez-Gutierrez, M.; Marchetti, Francesco; Hernandez-Ochoa, I.; Solis-Heredia, M.J .; Quintanilla-Vega, B.

2009-05-03T23:59:59.000Z

336

Microhydration Effects on the Intermediates of the SN2 Reacation of Iodide Anion with Methyl Iodine  

SciTech Connect (OSTI)

Reactions of halide anions with methyl halides (X- + CH3Y ? XCH3 + Y-) are bimolecular nucleophilic substitution (SN2) reactions that have been well investigated in the last few decades.[1] Figure 1 shows typical potential energy surfaces (PESs) proposed for symmetric (X- + CH3X ? XCH3 + X-) SN2 reactions along the reaction coordinate. In the gas phase, the PES has two minima corresponding to the stable X-(CH3X) complexes.[2] The PES is substantially distorted by the solvation. Since the negative charge is delocalized over the [XēēēCH3ēēēX]- moiety at the transition state the stabilization energy gained by the solvation is smaller for the transition state than that for the (X- + CH3X) reactants or the X- (CH3X) complexes. In solution, a large potential barrier exists between the reactants and products. The rate constants of these reactions in protic solvents were reported to be a few orders of magnitude smaller than those in aprotic solvents; this trend was explained by the formation of solvation shells of protic molecules around the halide anions.[1,3] Morokuma has previously reported a theoretical study on the PES of the (Cl- + CH3Cl ? ClCH3 + Cl-) SN2 reaction with a few H2O molecules. The attachment of H2O molecules to the Cl-(CH3Cl) reactive system produces metastable isomers, which affect the reaction mechanism.[4] Johnson and coworkers extensively investigated the structure and reactions of halide anion complexes in the gas phase using photodissociation spectroscopy.

Doi, Keisuke; Togano, Eijiro; Xantheas, Sotiris S.; Nakanishi, Ryuzo; Nagata, Takashi; Ebata, Takayuki; Inokuchi, Yoshiya

2013-04-15T23:59:59.000Z

337

Experimental investigations of the performance, emission and combustion characteristics of a biodiesel (ethyl ester of fish oil) fuelled direct-injection diesel engine  

Science Journals Connector (OSTI)

The thirst for fuel is steadily increasing as technology continues to open new areas of exploration. At the same time, the indiscriminate extraction of fossil fuels may also result in pollutant emissions which cause major impacts on ecological systems. In order to overcome the above problems, a suitable biodiesel should be used to replace the diesel fuel. Hence, in this work, feasibility of using biodiesel prepared from fish oil was investigated. Experimental tests were carried out to evaluate the performance, emission and combustion characteristics of a single cylinder, constant speed engine using several blends under variable load conditions. It was found that NOx, HC and CO emission was reduced for blends along with a marginal increase of brake thermal efficiency and smoke. The ignition delay and maximum heat release rate were reduced compared to diesel. Ultimately, fish oil can indeed become the appropriate source for biodiesel with environmental benefits.

G. Sakthivel; G. Nagarajan; M. Ilangkumaran

2013-01-01T23:59:59.000Z

338

Suitability of salt-gradient solar ponds for electrical power generation in the US Trust Territory of the Pacific Islands, Guam, and American Samoa  

SciTech Connect (OSTI)

The procedures and findings of a study to assess the suitability of salt-gradient solar ponds for base-load (firm) electricity generation in the US Trust Territory of the Pacific Islands (TTPI), Guam and American Samoa are described. The general conclusion is that solar pond power plants (SPPPs) are viable both technically and economically for some applications, possibly including atolls. The most practical immediate application would be to small and intermediate power users such as villages and airports. It is recommended that (1) at least one small SPPP be built immediately on a dry land site such as for the main village on Peleliu, Palau, (considered in this report) or at other identified feasible sites, and (2) that a design study be conducted to adapt the technology to atoll sites. This study was carried out by first reviewing all available literature on solar ponds and the regions concerned. All the regions in question were visited. Several sites were selected for specific study and SPPP conceptual designs were developed for these sites. These sites are (1) North Peleliu, Palau, with (2) Peleliu airport as an auxiliary site, (3) Aimeliik, Palau, and (4) atoll environments. Cultural, political, environmental and legal considerations were given equal weight with technical and economic factors, and locally resident persons were used as interpreters and liaisons. There exists strong support in the government and the community to develop these proposed site-specific SPPPs and land is available. Power needs were defined, construction and operation costs were calculated and performance was predicted for the site-specific designs. The results of the Palau site-specific studies were generalized to other areas and environments in the TTPI, Guam and American Samoa. An economic analysis of the SPPP conceptual design developed for Palau was made using the discounted cash flow method.

McCord, T.B.; Bathen, K.H.; Boesgaard, H.; Fanale, F.P.; McCord, C.S.; Scudder, R.J.; Weeks, D.D.; Yuen, J.W.L.

1982-11-01T23:59:59.000Z

339

Change of caged dynamics at Tg in hydrated proteins found after suppressing the methyl-group rotation contribution  

E-Print Network [OSTI]

In conventional glassformers at sufficiently short times and low enough temperatures, molecules are mutually caged by the intermolecular potential. The fluctuation and dissipation from motion of caged molecules when observed by elastic incoherent neutron scattering exhibit a change in temperature dependence of the mean square displacement (MSD) at the glass transition temperature Tg. This is a general and fundamental property of caged dynamics in glassformers, which is observed always near Tg independent of the energy resolution of the spectrometer. Recently we showed the same change of T-dependence at Tg is present in proteins solvated with bioprotectants, coexisting with the dynamic transition at a higher temperature Td. In these solvated proteins, all having Tg and Td higher than the proteins hydrated by water alone, the observation of the change of T-dependence of the MSD at Tg is unobstructed by the methyl-group rotation contribution at lower temperatures. On the other hand, proteins hydrated by water alone have lower Tg and Td, and hence unambiguous evidence of the transition of MSD at Tg is hard to find. Notwithstanding, evidence on the break of the MSD at Tg can be found by deuterating the protein to suppress the methyl-group contribution. An alternative strategy is the use of a spectrometer that senses motions faster than 15 ps, which confers the benefit of shifting both the onset of methyl-group rotation contribution as well as the dynamic transition to higher temperatures, and again the change of MSD at Tg becomes evident. The break of the elastic intensity or the MSD at Tg coexists with the dynamics transition at Td in hydrated and solvated proteins. Recognition of this fact helps to remove inconsistency and conundrum encountered in interpreting the data that thwart progress in understanding the origin of the dynamic transition and its connection to biological function.

K. L. Ngai; S. Capaccioli; A. Paciaroni

2011-06-29T23:59:59.000Z

340

Rheological Properties of Poly(methyl methacrylate)/Nanoclay Composites As Investigated by Creep Recovery in Shear  

Science Journals Connector (OSTI)

Rheological Properties of Poly(methyl methacrylate)/Nanoclay Composites As Investigated by Creep Recovery in Shear ... For different polymer systems filled with nanoclays a strong influence of the filler on rheological properties of the composites in the molten state was reported from experiments performed in oscillatory shear. ... Very interesting is the fact that there is no difference of the mean layer distance for the exemplarily shown PMMA 7N masterbatch with 23.8 vol % nanoclay after solution mixing compared to the composite diluted with pure PMMA 7N after melt mixing. ...

Helmut Muenstedt; Nikolaos Katsikis; Joachim Kaschta

2008-11-21T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

PEMFC cathode catalyst contamination evaluation with a RRDE-methyl methacrylate  

Science Journals Connector (OSTI)

Abstract This study was undertaken to provide insight into the mechanism of methyl methacrylate (MMA) contamination on the cathodes in proton exchange membrane fuel cells (PEMFCs). The effect of various concentrations of MMA on the oxygen reduction reaction (ORR) was investigated using a rotating ring-disk electrode (RRDE). The adsorption of MMA on the Pt/C electrode leads to a reduction in the electrochemical surface area (ECSA) and a decrease in the mass activity of the ORR. Increasing the MMA concentration causes an increase in its coverage on Pt and a decrease in the ORR mass activity. At high MMA concentration (0.1†M), the O2 transportation is also affected, resulting in a large decrease in the diffusion limiting current. For all of the MMA concentrations measured, a shift in the ORR reaction pathway from a 4-electron to 2-electron mechanism is observed, as indicated by the increase in the H2O2 production on the ring. Using the RRDE measurements and the Levich plots, the total charge transfer number is confirmed to decrease from 4 for the clean electrode to lower values due to the increase in the H2O2 side reactions. The shift in the reaction pathway is hypothesized to be caused by the inhibition of dual adsorption of the O2 molecules, due to steric hindrance induced by MMA adsorption on the Pt/C electrode. Tafel evaluation indicates a continuous increase in the slope with an increase in the MMA concentration, which indicates that the passage of electrons for the ORR at the electrode surface is altered by the adsorption of MMA. A recovery effect was also investigated and a water rinsing process was used to recover the electrode. Only a partial recovery was obtained with a water rinse followed by potential cycling over the same potential range as the initial ECSA measurements. The unrecovered performance is attributed to MMA remnants on the catalyst surface, which can be removed by potential cycling over a wider potential range with a larger anodic potential limit.

Junjie Ge; Jean St-Pierre; Yunfeng Zhai

2014-01-01T23:59:59.000Z

342

Detailed chemical kinetic mechanism for the oxidation of biodiesel fuels blend surrogate.  

SciTech Connect (OSTI)

Detailed chemical kinetic mechanisms were developed and used to study the oxidation of two large unsaturated esters: methyl-5-decenoate and methyl-9-decenoate. These models were built from a previous methyl decanoate mechanism and were compared with rapeseed oil methyl esters oxidation experiments in a jet stirred reactor. A comparative study of the reactivity of these three oxygenated compounds was performed and the differences in the distribution of the products of the reaction were highlighted showing the influence of the presence and the position of a double bond in the chain. Blend surrogates, containing methyl decanoate, methyl-5-decenoate, methyl-9-decenoate and n-alkanes, were tested against rapeseed oil methyl esters and methyl palmitate/n-decane experiments. These surrogate models are realistic kinetic tools allowing the study of the combustion of biodiesel fuels in diesel and homogeneous charge compression ignition engines.

Herbinet, O; Pitz, W J; Westbrook, C K

2009-07-21T23:59:59.000Z

343

General matrix ENDOR line shape model applied to the methyl radical in lithium acetate dihydrate using single crystal data  

Science Journals Connector (OSTI)

A new general matrix ENDOR line shape model is tested against ENDOR data on the methyl radical in ??irradiated lithium acetate dihydrate. All parameters in the line shape model are determined or narrowly limited by experiment. These include the dipolar tensors of all protons within 5 Ň of the methyl radical the microwave and radiofrequency magnetic fields and the electronic and nuclear spinĖlattice and spinĖspin relaxation times. The theoretical simulations agree satisfactorily with the experimental lineshape microwavemagnetic field dependence radiofrequency magnetic field dependence and angular variation of single crystalENDOR line intensities. The effective nuclear spinĖlattice relaxation time is ?10 ms at 77 K and seems to be dominated by an angularly independent nuclear relaxation mechanism. The angularly dependent electronĖnuclear dipolar interaction is found to be of much less importance for the ENDOR response. It is noted that the angular variation of ENDOR intensities is an important parameter to assess the nuclear relaxation mechanisms that control the ENDOR response. Data on cw and pulsed matrix ENDOR are compared and found to be similar. It is also shown that a model based on idealized line shape theory for disordered systems can satisfactorily reproduce matrix ENDOR line shapes. Both models allow calculation of the relative contributions from angularly independent and dependent ENDOR responses.

Larry Kevan; P. A. Narayana; K. Toriyama; M. Iwasaki

1979-01-01T23:59:59.000Z

344

Hydration properties of natural and synthetic DNA sequences with methylated adenine or cytosine bases in the R.DpnI target and BDNF promoter studied by molecular dynamics simulations  

Science Journals Connector (OSTI)

Adenine and cytosine methylation are two important epigenetic modifications of DNA sequences at the levels of the genome and transcriptome. To characterize the differential roles of methylating adenine or cytosine with respect to their hydration properties we performed conventional MD simulations and free energy perturbation calculations for two particular DNA sequences namely the brain-derived neurotrophic factor (BDNF) promoter and the R.DpnI-bound DNA that are known to undergo methylation of C5-methyl cytosine and N6-methyl adenine respectively. We found that a single methylated cytosine has a clearly favorable hydration free energy over cytosine since the attached methyl group has a slightly polar character. In contrast capping the strongly polar N6 of adenine with a methyl group gives a slightly unfavorable contribution to its free energy of solvation. Performing the same demethylation in the context of a DNA double-strand gave quite similar results for the more solvent-accessible cytosine but much more unfavorable results for the rather buried adenine. Interestingly the same demethylation reactions are far more unfavorable when performed in the context of the opposite (BDNF or R.DpnI target) sequence. This suggests a natural preference for methylation in a specific sequence context. In addition free energy calculations for demethylating adenine or cytosine in the context of B-DNA vs. Z-DNA suggest that the conformational B-Z transition of DNA transition is rather a property of cytosine methylated sequences but is not preferable for the adenine-methylated sequences investigated here.

2014-01-01T23:59:59.000Z

345

High-Throughput Hacking of the Methylation Patterns in Breast Cancer by In vitro Transcription and Thymidine-Specific Cleavage Mass Array on MALDI-TOF Silico-Chip  

Science Journals Connector (OSTI)

...Research Article Cancer Genes and Genomics High-Throughput Hacking of the Methylation Patterns in Breast Cancer by In vitro Transcription...Supplement: Supplementary Data Supplementary Data High-throughput hacking of the methylation patterns in breast cancer by in vitro transcription...

Ramin Radpour; Mahdi Montazer Haghighi; Alex Xiu-Cheng Fan; Peyman Mohammadi Torbati; Sinuhe Hahn; Wolfgang Holzgreve; Xiao Yan Zhong

2008-11-01T23:59:59.000Z

346

1981). Their basic solution is to find a suitable backfilling material to minimize the contact resistance and to maintain high ground thermal conductivity around the cable even under very  

E-Print Network [OSTI]

#12;1981). Their basic solution is to find a suitable backfilling material to minimize the contact resistance and to maintain high ground thermal conductivity around the cable even under very dry ground contact resistance or soil dry-out or both. This paper presents a mathematical model describing

Oak Ridge National Laboratory

347

This list includes a sampling of volunteer opportunities and organizations working in the field of Marketing. These opportunities may be suitable for students majoring or interested in these areas. You can find full  

E-Print Network [OSTI]

of Marketing. These opportunities may be suitable for students majoring or interested in these areas. You can Opportunity - Marketing & Publicity Committee Web Site: http://www.fitchburgfields.org Promote educational volunteers with marketing, business, public relations or related training and education. Contact Person

Sheridan, Jennifer

348

Syntrophs Dominate Sequences Associated with the Mercury Methylation-Related Gene hgcA in the Water Conservation Areas of the Florida Everglades  

Science Journals Connector (OSTI)

...great concern because of potential adverse impacts on human and wildlife health through mercury accumulation in aquatic food webs. We developed a new PCR primer set targeting hgcA, a gene encoding a corrinoid protein essential for Hg methylation across...

Hee-Sung Bae; Forrest E. Dierberg; Andrew Ogram

2014-08-08T23:59:59.000Z

349

Methyl tert-butyl ether (MTBE) is a volatile organic com-pound (VOC) derived from natural gas that is added to gas-  

E-Print Network [OSTI]

Methyl tert-butyl ether (MTBE) is a volatile organic com- pound (VOC) derived from natural gas Water in Urban and Agricultural Areas made from methanol, which is derived primarily from natural gas that is added to gas- oline either seasonally or year round in many parts of the United States to increase

350

1-Methyl Naphthalene Reorientation at the Air-Liquid Interface upon Water Saturation Studied by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy  

E-Print Network [OSTI]

will encounter gas-phase water molecules or may react with atmospheric oxidants. The uptake and reaction1-Methyl Naphthalene Reorientation at the Air-Liquid Interface upon Water Saturation Studied by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy Elizabeth L. Hommel and Heather C. Allen

351

Anharmonicity and isomorphic phase transition: a multi-temperature X-ray single-crystal and powder diffraction study of 1-(2'-aminophenyl)-2-methyl-4-nitroimidazole  

Science Journals Connector (OSTI)

Multi-temperature single-crystal and powder diffraction experiments on 1-(2'-aminophenyl)-2-methyl-4-nitroimidazole show that this crystal undergoes an isomorphic phase transition with the coexistence of two phase domains over a wide temperature range. The anharmonic approach was the only way to model the resulting disorder.

Poulain, A.

2014-02-28T23:59:59.000Z

352

Downregulation of Filamin A Interacting Protein 1-Like is Associated with Promoter Methylation and Induces an Invasive Phenotype in Ovarian Cancer  

Science Journals Connector (OSTI)

...System as described in Materials and Methods. The y-axis...artifacts resulting from the handling of FFPE tissues, by...out as described in Materials and Methods. Methylation...A, the schematic diagram of the putative CpG...out as described in Materials and Methods, and is...

Elizabeth R. Burton; Aneesa Gaffar; Soo Jin Lee; Folashade Adeshuko; Kathleen D. Whitney; Joon-Yong Chung; Stephen M. Hewitt; Gloria S. Huang; Gary L. Goldberg; Steven K. Libutti; and Mijung Kwon

2011-08-01T23:59:59.000Z

353

Bis(4-methyl≠anilinium) and bis≠(4-iodo≠anilinium) penta≠molybdates from laboratory X-ray powder data and total energy minimization  

Science Journals Connector (OSTI)

The crystal structures of bis≠(4-methyl≠anilinium) and bis≠(4-iodo≠anilinium) penta≠molybdates were determined using laboratory X-ray data and refined by total energy minimization methods. The obtained structures present alternating organic cation and inorganic polyanion layers bound by weak bonding (apart from ionic inter≠actions).

Oszajca, M.

2013-10-31T23:59:59.000Z

354

Application of basic zeolites in the decomposition reaction of 2-methyl-3-butyn-2-ol and the isomerization of 3-carene  

Science Journals Connector (OSTI)

Basic zeolite catalysts can be generated via ion exchange or via impregnation with alkali metals and alkali metal acetates following different methods. The decomposition of 2-methyl-3-butyn-2-ol and the isomerization reaction of 3-carene to 2-carene have been studied in the gas phase over various basic zeolites to investigate their value as test reactions for basic properties of zeolites.

U Meyer; W.F Hoelderich

1999-01-01T23:59:59.000Z

355

Pelargonium Oil and Methyl Hexaneamine (MHA): Analytical Approaches Supporting the Absence of MHA in Authenticated Pelargonium graveolens Plant Material and Oil  

Science Journals Connector (OSTI)

......research-article Articles Pelargonium Oil and Methyl Hexaneamine (MHA): Analytical...Pelargonium graveolens Plant Material and Oil Mahmoud A. ElSohly 1 2 3 4 * Waseem Gul...Pelargonium graveolens) leaves, stems, roots or oil, and therefore qualifies as a dietary ingredient......

Mahmoud A. ElSohly; Waseem Gul; Kareem M. ElSohly; Timothy P. Murphy; Aroona Weerasooriya; Amar G. Chittiboyina; Bharathi Avula; Ikhlas Khan; Amy Eichner; Larry D Bowers

2012-09-01T23:59:59.000Z

356

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N. Romeo, A. Bosio, A. Romeo, M. Bianucci, L. Bonci, C. Lenti  

E-Print Network [OSTI]

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N-mail:Nicola.Romeo@fis.unipr.it ABSTRACT: It has been demonstrated that CdTe/CdS thin film solar cells can exhibit an efficiency around 16 Film. 1 INTRODUCTION CdTe/CdS thin film solar cells have a good possibility to be produced on large

Romeo, Alessandro

357

Lack of induction of O/sup 6/-methylguanine-DNA methyltransferase in mammalian cells treated with N-methyl-N'-nitro-N-nitrosoguanidine  

SciTech Connect (OSTI)

A synthetic DNA substrate containing O/sup 6/-methyl(8-/sup 3/H)-guanine was used to assay demethylation of the premutagenic base by O/sup 6/-methylguanine-DNA methyltransferase in extracts of HeLa cells, Chinese hamster ovary cells and normal rat kidney cells which had been treated with multiple doses of N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). No induction of methyltransferase activity was observed in any of the cell lines tested. Constitutive levels of methyltransferase in cell lines proficient (Mex/sup +/) in O/sup 6/-methylguanine repair were decreased in a dose-dependent fashion by either single or multiple treatments with MNNG over a broad range of dose levels. Recovery of constitutive levels of activity required 24- to 48-h incubation periods. Repair deficient (Mex/sup -/) cell lines lacked both constitutive and inducible methyltransferase activity. 42 references, 4 figures, 1 table.

Foote, R.S.; Mitra, S.

1984-01-01T23:59:59.000Z

358

A theoretical study of the ion pair SN2 reaction between lithium isocyanates with methyl fluoride with inversion and retention mechanism  

Science Journals Connector (OSTI)

This paper is devoted to a detailed theoretical study of an ion pair SN2 reaction LiNCO+CH3F in the gas phase and in solution at the level of MP2(full)/6-31+G**//HF/6-31+G**. Two possible reaction mechanisms, inversion and retention, are discussed. There are eight possible reaction pathways. The inversion mechanism is more favorable no matter in the gas phase or in solution based on analyses of the transition structures. Methyl isocyanate should form preferentially in the gas phase and more stable methyl cyanate is the main product in solution. The retardation of the reaction in solvents was attributed to the difference in solvation in the separated reactants and in the transition state.

Hua-jie Zhu; Yi Ren; Jie Ren

2004-01-01T23:59:59.000Z

359

Self-supported poly(methyl methacrylateĖacrylonitrileĖvinyl acetate)-based gel electrolyte for lithium ion battery  

Science Journals Connector (OSTI)

Self-supported gel polymer electrolyte (GPE) was prepared based on copolymer, poly(methyl methacrylateĖacrylonitrileĖvinyl acetate) (P(MMAĖANĖVAc)). The copolymer P(MMAĖANĖVAc) was synthesized by emulsion polymerization and the copolymer membrane was prepared through phase inversion. The structure and the performance of the copolymer, the membrane and the GPE were characterized by FTIR, NMR, SEM, XRD, DSC/TG, LSV, CA, and EIS. It is found that the copolymer was formed through the breaking of double bond CC in each monomer. The membrane has low crystallinity and has low glass transition temperature, 39.1†įC, its thermal stability is as high as 310†įC, and its mechanical strength is improved compared with P(MMAĖAN). The GPE is electrochemically stable up to 5.6†V (vs. Li/Li+) and its conductivity is 3.48†◊†10?3†S†cm?1 at ambient temperature. The lithium ion transference number in the GPE is 0.51 and the conductivity model of the GPE is found to obey the VogelĖTammanĖFulcher (VTF) equation.

Y.H. Liao; D.Y. Zhou; M.M. Rao; W.S. Li; Z.P. Cai; Y. Liang; C.L. Tan

2009-01-01T23:59:59.000Z

360

Poly(methyl methacrylate) as a self-assembled gate dielectric for graphene field-effect transistors  

SciTech Connect (OSTI)

We investigate poly(methyl methacrylate) (PMMA) as a low thermal budget organic gate dielectric for graphene field effect-transistors (GFETs) based on a simple process flow. We show that high temperature baking steps above the glass transition temperature (?130?įC) can leave a self-assembled, thin PMMA film on graphene, where we get a gate dielectric almost for ďfreeĒ without additional atomic layer deposition type steps. Electrical characterization of GFETs with PMMA as a gate dielectric yields a dielectric constant of k?=?3.0. GFETs with thinner PMMA dielectrics have a lower dielectric constant due to decreased polarization arising from neutralization of dipoles and charged carriers as baking temperatures increase. The leakage through PMMA gate dielectric increases with decreasing dielectric thickness and increasing electric field. Unlike conventional high-k gate dielectrics, such low-k organic gate dielectrics are potentially attractive for devices such as the proposed Bilayer pseudoSpin Field-Effect Transistor or flexible high speed graphene electronics.

Sanne, A.; Movva, H. C. P.; Kang, S.; McClellan, C.; Corbet, C. M.; Banerjee, S. K. [Microelectronics Research Center, University of Texas, Austin, Texas 78758 (United States)

2014-02-24T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Investigations on the quality of dispersion of nanofillers in poly(methyl methacrylate) composites by creep-recovery experiments  

Science Journals Connector (OSTI)

Nanocomposites with poly(methyl methacrylate) as the matrix and three different types of fillers namely nanoclay nanosilica and multiwalled carbon nanotubes were prepared using various methods for the dispersion of the particular fillers. The morphology was analyzed using light and transmission electron microscopy. The composites were investigated by creep-recovery experiments in addition to conventional dynamic-mechanical measurements. While the changes of the storage modulus G ? are not very distinctive for low filler concentrations the differences in the recoverable compliance measured by creep-recovery experiments become significant. The better the quality of dispersion the higher is the recoverable compliance. This finding is explained by an interaction of macromolecules with the particle surface which is more pronounced for well dispersed particles as they offer a larger surface area. Therefore creep-recovery measurements can very sensitively be used for the determination of the quality of dispersion. This rheological method integrates over the state of the whole sample whereas transmission electron microscopy analyses only a tiny part of it.

Christian Triebel; Nikolaos Katsikis; Hana StarŠ

2010-01-01T23:59:59.000Z

362

Ca0.9Mn0.5Ti0.5O3??: A Suitable Oxygen Carrier Material for Fixed-Bed Chemical Looping Combustion under Syngas Conditions  

Science Journals Connector (OSTI)

Ca0.9Mn0.5Ti0.5O3??: A Suitable Oxygen Carrier Material for Fixed-Bed Chemical Looping Combustion under Syngas Conditions ... Power generation using chemical looping combustion (CLC) technology has emerged as a promising CO2-capture-based alternative to conventional technology. ... Because of the high oxidation enthalpy, Ca0.9Mn0.5Ti0.5O3?? does not give full combustion of the syngas; still 95% conversion is achieved. ...

Mehdi Pishahang; Yngve Larring; Michael McCann; Rune Bredesen

2014-06-06T23:59:59.000Z

363

Hard Cider Varieties Suitable for Northern  

E-Print Network [OSTI]

and color, sugar content, flavor, & starch ­ evaluated tree yield, vigor, and harvest date · 2007: We `dessert' apple maturity: ­ firmness, brix, starch ­ flavor, blush, shape, flesh color and quality ­ tree Acidity ­ pH ­ Brix ­ Alcohol content #12;Adams Apple · Late season, dark maroon apple with bland red

364

Gas leakage and distribution characteristics of methyl bromide and sulfuryl fluoride during fumigations in a pilot flour mill  

Science Journals Connector (OSTI)

The half-loss time (HLT) is used as an indicator to quantify gas leakage rates during methyl bromide (MB) and sulfuryl fluoride (SF) fumigations. Comparisons of \\{HLTs\\} between three MB and three SF fumigations were quantified in the Hal Ross pilot flour mill, Department of Grain Science and Industry, Kansas State University, USA. The sealing quality or gas tightness of the mill before each fumigation was verified by a pressurization test. Fumigant concentrations during the six fumigations were monitored continuously at 30 locations among the five mill floors during the 24†h fumigation period. A weather station on the mill roof monitored barometric pressure, wind speed and direction, temperature, and relative humidity. A data logger on each mill floor recorded temperature and relative humidity. The pressurization test showed that the relationship between airflow rate and building static pressure varied among the fumigations despite the same areas being sealed by two separate fumigation service providers due to environmental conditions not being identical among the fumigations. Concentration differences of both fumigants within the mill ranged from 2 to 7†g/m3. The observed \\{HLTs\\} for the MB and SF fumigations were in the range of 3.61 to 28.64†h and 9.97 to 31.65†h, respectively, and were inversely related only to wind speeds during fumigation and not any other environmental conditions recorded. In our study, the fumigant leakage rate was found to be predominantly a function of wind speed rather than inherent gas characteristics of MB and SF.

Watcharapol Chayaprasert; Dirk E. Maier; Bhadriraju Subramanyam; Michelle Hartzer

2012-01-01T23:59:59.000Z

365

Dissociation of internal energy-selected methyl bromide ion revealed from threshold photoelectron-photoion coincidence velocity imaging  

SciTech Connect (OSTI)

Dissociative photoionization of methyl bromide (CH{sub 3}Br) in an excitation energy range of 10.45Ė16.90 eV has been investigated by using threshold photoelectron-photoion coincidence (TPEPICO) velocity imaging. The coincident time-of-flight mass spectra indicate that the ground state X{sup 2}E of CH{sub 3}Br{sup +} is stable, and both A{sup 2}A{sub 1} and B{sup 2}E ionic excited states are fully dissociative to produce the unique fragment ion of CH{sub 3}{sup +}. From TPEPICO 3D time-sliced velocity images of CH{sub 3}{sup +} dissociated from specific state-selected CH{sub 3}Br{sup +} ion, kinetic energy release distribution (KERD) and angular distribution of CH{sub 3}{sup +} fragment ion are directly obtained. Both spin-orbit states of Br({sup 2}P) atom can be clearly observed in fast dissociation of CH{sub 3}Br{sup +}(A{sup 2}A{sub 1}) ion along CĖBr rupture, while a KERD of Maxwell-Boltzmann profile is obtained in dissociation of CH{sub 3}Br{sup +}(B{sup 2}E) ion. With the aid of the re-calculated potential energy curves of CH{sub 3}Br{sup +} including spin-orbit coupling, dissociation mechanisms of CH{sub 3}Br{sup +} ion in A{sup 2}A{sub 1} and B{sup 2}E states along CĖBr rupture are revealed. For CH{sub 3}Br{sup +}(A{sup 2}A{sub 1}) ion, the CH{sub 3}{sup +} + Br({sup 2}P{sub 1/2}) channel is occurred via an adiabatic dissociation by vibration, while the Br({sup 2}P{sub 3/2}) formation is through vibronic coupling to the high vibrational level of X{sup 2}E state followed by rapid dissociation. CĖBr bond breaking of CH{sub 3}Br{sup +}(B{sup 2}E) ion can occur via slow internal conversion to the excited vibrational level of the lower electronic states and then dissociation.

Tang, Xiaofeng [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China) [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China); National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China); Zhou, Xiaoguo, E-mail: xzhou@ustc.edu.cn, E-mail: yanbing@jlu.edu.cn; Liu, Shilin [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China) [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Sun, Zhongfa [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China)] [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 (China); Liu, Fuyi; Sheng, Liusi [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China)] [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China); Yan, Bing, E-mail: xzhou@ustc.edu.cn, E-mail: yanbing@jlu.edu.cn [Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012 (China)] [Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012 (China)

2014-01-28T23:59:59.000Z

366

Sandia National Laboratories: fatty acid ethyl esters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

367

Synthesis of 6-Methyl-9-propyldibenzothiophene-4-ol amended to 9-isopropyl-6-methyldibenzothiophene-4-ol. Final technical report, July 25, 1991--January 25, 1993  

SciTech Connect (OSTI)

This is a draft final technical report on Task 1 of a contract to synthesize 6-Methyl-9-propyldibenzothiophene-4-ol, as amended to 9- isopropyl-6-methyldibenzothiophene-4-ol. This report is a compilation of data presented in earlier reports. The first annual report dealt with an attempted synthesis of 4-methoxy-6-methyl-9- propyldibenzothiophene (the original target compound), the successful synthesis and delivery of 200 grams of the sulfide 1,4-diethyl-2- [(2{prime}-methoxyphenyl)-thio]benzene, and initial work on a new synthesis route for the preparation of the new target compound 9- isopropyl-6-methyldibenzothiophene-4-ol. The change to the new target compound and the new synthesis route became necessary when it was learned that the sulfide mixture could not be cyclized to the substituted dibenzothiophene mixture. The second annual report described the successful preparation of 45 g of the new target compound using the new synthesis route. Subsequently funds were provided to synthesize an additional 45 g of the new target using the same reaction scheme. This task was recently completed.

Eisenbraun, E.J.

1992-02-17T23:59:59.000Z

368

CO2-limitation-inducible Green Recovery of fatty acids from cyanobacterial biomass  

Science Journals Connector (OSTI)

...other microbial bioreactors such as algae, E. coli, and yeast...fatty acyl methyl, or ethyl esters (biodiesel), and alkanes...Green Recovery is introduced into algae. Fig. S1. One fluorescence microscopy...

Xinyao Liu; Sarah Fallon; Jie Sheng; Roy Curtiss III

2011-01-01T23:59:59.000Z

369

E-Print Network 3.0 - alcohols aldehydes acids Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5087-5090,1988 0040-403988 3.00 + .oO Printed in Great Britain Pergamon Press plc Summary: been shown to convert aldehydes to methyl esters, whereas secondary alcohols...

370

C/EBP? (NF-M) Is Essential for Activation of the p20K Lipocalin Gene in Growth-Arrested Chicken Embryo Fibroblasts  

Science Journals Connector (OSTI)

...intensively investigated in cells submitted to ionizing radiations. In these conditions, the p53 tumor suppressor is...RodanIdentification of fatty acid methyl ester as naturally occuring transcriptional regulators of the members of the peroxysome...

Selena Kim; Pei-Lin Mao; Mark Gagliardi; Pierre-Andrť Bťdard

1999-08-01T23:59:59.000Z

371

High-performance organic solar cells based on a low-bandgap poly-thienothiophene-benzodithiophene polymer and fullerene composite prepared by using the airbrush spray-coating technique  

Science Journals Connector (OSTI)

In the present work, we have demonstrated high-performance organic solar cells with spray coated active layers. The influence ... butyric acid (PC71BM) methyl ester bulk heterojunction solar cells is presented. A...

Palanisamy Kumar; Santhakumar KannappanÖ

2013-04-01T23:59:59.000Z

372

Optimization of an Electron Transport Layer to Enhance the Power Conversion Efficiency of Flexible Inverted Organic Solar Cells  

Science Journals Connector (OSTI)

The photovoltaic (PV) performance of flexible inverted organic solar cells (IOSCs) with an active layer consisting...61-butlyric acid methyl ester was investigated by varying the thicknesses of ZnO seed layers an...

Kang Hyuck Lee; Brijesh Kumar; Hye-Jeong Park; Sang-Woo Kim

2010-12-01T23:59:59.000Z

373

Investigation of aged organic solar cell stacks by cross-sectional transmission electron microscopy coupled with elemental analysis  

Science Journals Connector (OSTI)

Polymer solar cells are of great interest as candidates for...61...-butyric acid methyl ester (P3HT and PCBM, respectively). Phase segregation of the blend has been extensively investigated by transmission electr...

P. Favia; E. Voroshazi; P. Heremans; H. Bender

2013-04-01T23:59:59.000Z

374

Hafnium metallocene compounds used as cathode interfacial layers for enhanced electron transfer in organic solar cells  

Science Journals Connector (OSTI)

We have used hafnium metallocene compounds as cathode interfacial layers for organic solar cells [OSCs]. A metallocene compound consists of...6, 6]-phenyl C61 butyric acid methyl ester, bis-(ethylcyclopentadienyl...

Keunhee Park; Seungsik Oh; Donggeun Jung; Heeyeop ChaeÖ

2012-01-01T23:59:59.000Z

375

The Juvenile Hormone Binding Protein in the Hemolymph of Manduca sexta Johannson (Lepidoptera: Sphingidae)  

Science Journals Connector (OSTI)

...fatty-acid methyl ester, and indeed, most previous workers have treated it as a virtually water- insoluble lipoidal...Incorporated (1970) Application Bulletin AN32, p. 2, Oak Ridge, Tenn. 12. Whitmore, D., Jr., Whitmore, E...

Karl J. Kramer; Larry L. Sanburg; Ferenc J. Kťzdy; John H. Law

1974-01-01T23:59:59.000Z

376

CA is particularly vulnerable to the costs associated with unmitigated climate change. A warming climate would generate more smoggy days, ozone, and foster more large brush  

E-Print Network [OSTI]

-acid-methyl-ester (FAME)) · Renewable diesel and gasoline (e.g., "drop-in" fuels or hydrocarbons, biomass-to-liquid (BTL% Forestry, 242 TBtu, 41% Agriculture, 137 TBtu, 24% Potential Feedstock Energy in Biomass 507 Trillion Btu

California at Davis, University of

377

Ris Energy Report 5 Renewable-based fuels for transport 4 Introduction  

E-Print Network [OSTI]

- etable oils. Interesterification of the glyceride molecule using an alcohol, usually methanol, produces, in which methanol is reacted with glycerides to produce glycerin and methyl esters. biodiesel may also

378

Biodiesel Engine Testing MECH-457 Final Report  

E-Print Network [OSTI]

at UBC has begun producing biodiesel fuel from waste cooking oils acquired from campus kitchens. Using methanol and a base catalyst, glycerol can be separated from the oil, leaving a mixture of methyl esters

379

Comparing the biodiesel and biogasoil production from different natural triglycerides  

Science Journals Connector (OSTI)

Regarding the sustainable mobility, product quality and environmental aspects fatty acids methyl esters and biogasoils were compared. They were produced by the transesterification and special hydrocracking (including the isomerization, as well) of triglycerides, ... Keywords: biodiesel, biogasoil, feedstock supply, quality comparison

JenŲ Hancsůk; ZoltŠn Varga; SŠndor KovŠcs; TamŠs Kasza

2011-12-01T23:59:59.000Z

380

Quantification of Underivatized Fatty Acids From Vegetable Oils by HPLC with UV Detection  

Science Journals Connector (OSTI)

......harvest time, extraction processes from fruits or seeds, etc...oils by triacylglyc- erols evaluation of profile using HPLC/ELSD...large-scale manufacturing processes. IIE Transactions 34: 881890...fatty acid methyl esters in biodiesel produced from yellow horn......

V. Guarrasi; M.R. Mangione; V. Sanfratello; V. Martorana; D. Bulone

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Chapter 6 - Algae as a Fuel Source  

Science Journals Connector (OSTI)

Unlike higher plants, microalgae lack leaves or roots but are still capable of engaging in photosynthesis. Because of this, they produce about half of the earthís atmospheric oxygen and simultaneously consume half of its carbon dioxide. This makes them desirable for the reduction of greenhouse gases while producing the means for the production of renewable fuels. Of the half million existing species, Chlorophyceae, the so-called green algae, are best for biodiesel production since they can exhibit a fourfold daily increase in number. Concerns about the sustainability of open ponds have led to closed photobioreactors for algae production. The high triglyceride content of algae makes them suitable for renewable diesel. The triglycerides are transesterified with methanol to form the corresponding methyl esters and byproduct glycerol. The products can be used as a drop-in jet fuel. Firms active in algae-based fuel development are Solazyme, Algenol Corp., and Origin Oil.

Arthur M. Brownstein

2015-01-01T23:59:59.000Z

382

Two-dimensional hydrogen-bonded polymers in the crystal structures of the ammonium salts of phen≠oxy≠acetic acid, (4-fluoro≠phen≠oxy)acetic acid and (4-chloro-2-methyl≠phen≠oxy)acetic acid  

Science Journals Connector (OSTI)

The crystal of the isomorphous anhydrous ammonium salts of phen≠oxy≠acetic acid and (4-fluoro≠phen≠oxy)acetic acid and that of the hemihydrate ammonium salt of 4-chloro-2-methyl≠phen≠oxy)acetic acid show two-dimensional layered structures based on conjoined cyclic hydrogen-bonded motifs.

Smith, G.

2014-11-19T23:59:59.000Z

383

Charting a dynamic DNA methylation landscape of the human Michael J. Ziller1,2,3, Hongcang Gu1, Fabian Mller3,4, Julie Donaghey1,2,3, Linus T.-Y.  

E-Print Network [OSTI]

Charting a dynamic DNA methylation landscape of the human genome Michael J. Ziller1,2,3, Hongcang Center, University of T√ľbingen, T√ľbingen, Germany 7Program in Translational NeuroPsychiatric GenomicsGs participate in genomic regulation. Here we report the in depth analysis of 42 whole genome bisulfite

384

Deconjugative Conversion of r-Alkynyl Esters to r,r-Disubstituted -Alkynyl Esters  

E-Print Network [OSTI]

. Optimal conditions included the use of 2 equiv of lithium diisopropylamide in THF with HMPA of 2 equiv of lithium diisopropyl- amide (LDA). Our studies indicated that 2 equiv of LDA most likely led to the formation of dianion inter- mediate A. Upon the addition of excess electrophile (TMS-Cl, Me

Lepore, Salvatore D.

385

Analysis of Fatty Acid and Alcoholic Components of Sebaceous Lipid Types  

Science Journals Connector (OSTI)

......chromatography of the acetates. Ratios were determined...specificity for the synthesis of alcohols. Introduction...and Alcohols For the synthesis of cyclopropanoid acids...the methyl esters with lithium aluminum hydride. The...anhydride and the respective acetates together with the methyl......

Hugh J. O'Neill; Leon L. Gershbein

1976-01-01T23:59:59.000Z

386

NOx Reduction from Biodiesel Fuels  

Science Journals Connector (OSTI)

NOx Reduction from Biodiesel Fuels ... NOx emissions appear to be different for biodiesels from different feedstocks. ... For the suite of biodiesels prepared from nearly pure fatty acids, all biodiesel fuels produced higher NOx than certification diesel with the following exceptions:? methyl palmitate, methyl laurate, ethyl stearate, and the ethyl ester of hydrogenated soybean oil. ...

Sandun Fernando; Chris Hall; Saroj Jha

2005-11-19T23:59:59.000Z

387

Pharmacological characterization of LY233053: A structurally novel tetrazole-substituted competitive N-methyl-D-aspartic acid antagonist with a short duration of action  

SciTech Connect (OSTI)

This study reports the activity of a structurally novel excitatory amino acid receptor antagonist, LY233053 (cis-(+-)-4-((2H-tetrazol-5-yl)methyl)piperidine-2-carboxylic acid), the first tetrazole-containing competitive N-methyl-D-aspartic acid (NMDA) antagonist. LY233053 potently inhibited NMDA receptor binding to rat brain membranes as shown by the in vitro displacement of (3H) CGS19755 (IC50 = 107 +/- 7 nM). No appreciable affinity in (3H)alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) or (3H)kainate binding assays was observed (IC50 values greater than 10,000 nM). In vitro NMDA receptor antagonist activity was further demonstrated by selective inhibition of NMDA-induced depolarization in cortical wedges (IC50 = 4.2 +/- 0.4 microM vs. 40 microM NMDA). LY233053 was effective after in vivo systemic administration in a number of animal models. In neonatal rats, LY233053 selectively blocked NMDA-induced convulsions (ED50 = 14.5 mg/kg i.p.) with a relatively short duration of action (2-4 hr). In pigeons, LY233053 potently antagonized (ED50 = 1.3 mg/kg i.m.) the behavioral suppressant effects of 10 mg/kg of NMDA. However, a dose of 160 mg/kg, i.m., was required to produce phencyclidine-like catalepsy in pigeons. In mice, LY233053 protected against maximal electroshock-induced seizures at lower doses (ED50 = 19.9 mg/kg i.p.) than those that impaired horizontal screen performance (ED50 = 40.9 mg/kg i.p.). Cholinergic and GABAergic neuronal degenerations after striatal infusion of NMDA were prevented by single or multiple i.p. doses of LY233053. In summary, the antagonist activity of LY233053 after systemic administration demonstrates potential therapeutic value in conditions of neuronal cell loss due to NMDA receptor excitotoxicity.

Schoepp, D.D.; Ornstein, P.L.; Leander, J.D.; Lodge, D.; Salhoff, C.R.; Zeman, S.; Zimmerman, D.M. (Eli Lilly and Company, Indianapolis, IN (USA))

1990-12-01T23:59:59.000Z

388

Correlation of hetorogeneous blood flow and uptake of a di-methyl-branched IODO fatty acid in the normal and ischemic dog heart  

SciTech Connect (OSTI)

Myocardial blood flow (MBF) is heterogeneously distributed in normal and ischemic myocardium (myoc). Methylated iodinated fatty acids, like 15-(p-I-125-iodophenyl)-3,3-dimethylpentadecanoic acid (DMIPPA) can be used to study fatty acid metabolism with SPECT. We studied the relationship between DMIPPA uptake and MBF. In 10 open-chest dogs, ischemica was induced in the LAD coronary artery by an extra-corporal bypass system. MBF was measured with Sc-46 labeled microspheres. Fourty min. after DMIPPA iv. (34{plus_minus}4 MBq), hearts were excised and left ventricles were cut into 120 pieces, weighed and radioactivities counted. MBF and DMIPPA uptake were determined by counting in normal and ischemic myoc. Heterogeneity is expressed as the coefficient of variation (CV) and agreement as the CV of the DMIPPA uptake to MBF ratio. A control study, normal flow in LAD, in 4 dogs revealed no differences in MBF or DMIPPA uptake between the cannulated versus native perfused myoc. We conclude the DMIPPA detects ischemia, in which it shows a different relation with MBF compared to normal myoc. DMIPPA is less heterogeneously distributed than MBF and agreement between MFB and DMIPPA uptake decreases during ischemia.

Sloof, G.W.; Visser, F.C.; Comans, E.F.I. [Free Univ. Hospital, Amsterdam (Netherlands)]|[Oak Ridge National Lab., TN (United States)] [and others

1995-05-01T23:59:59.000Z

389

Direct photo-etching of poly(methyl methacrylate) using focused extreme ultraviolet radiation from a table-top laser-induced plasma source  

SciTech Connect (OSTI)

In order to perform material interaction studies with intense extreme ultraviolet (EUV) radiation, a Schwarzschild mirror objective coated with Mo/Si multilayers was adapted to a compact laser-based EUV plasma source (pulse energy 3 mJ at {lambda}=13.5 nm, plasma diameter {approx}300 {mu}m). By 10x demagnified imaging of the plasma a pulse energy density of {approx}75 mJ/cm{sup 2} at a pulse length of 6 ns can be achieved in the image plane of the objective. As demonstrated for poly(methyl methacrylate) (PMMA), photoetching of polymer surfaces is possible at this EUV fluence level. This paper presents first results, including a systematic determination of PMMA etching rates under EUV irradiation. Furthermore, the contribution of out-of-band radiation to the surface etching of PMMA was investigated by conducting a diffraction experiment for spectral discrimination from higher wavelength radiation. Imaging of a pinhole positioned behind the plasma accomplished the generation of an EUV spot of 1 {mu}m diameter, which was employed for direct writing of surface structures in PMMA.

Barkusky, Frank; Peth, Christian; Bayer, Armin; Mann, Klaus [Laser-Laboratorium-Goettingen e.V., Hans-Adolf-Krebs-Weg 1, D-37077 Goettingen (Germany)

2007-06-15T23:59:59.000Z

390

Direct photo-etching of poly(methyl methacrylate) using focused extreme ultraviolet radiation from a table-top laser-induced plasma source  

Science Journals Connector (OSTI)

In order to perform material interaction studies with intense extreme ultraviolet(EUV)radiation a Schwarzschild mirror objective coated with Mo/Si multilayers was adapted to a compact laser-based EUVplasma source (pulse energy 3 ? mJ ? at ? ? = 13.5 ? nm plasma diameter ? 300 ? ? m ). By 10 ◊ demagnified imaging of the plasma a pulse energy density of ? 75 ? mJ ? cm 2 at a pulse length of 6 ns can be achieved in the image plane of the objective. As demonstrated for poly(methyl methacrylate) (PMMA) photoetching of polymer surfaces is possible at this EUV fluence level. This paper presents first results including a systematic determination of PMMA etching rates under EUVirradiation. Furthermore the contribution of out-of-band radiation to the surface etching of PMMA was investigated by conducting a diffraction experiment for spectral discrimination from higher wavelength radiation. Imaging of a pinhole positioned behind the plasma accomplished the generation of an EUV spot of 1 ? ? m diameter which was employed for direct writing of surface structures in PMMA.

Frank Barkusky; Christian Peth; Armin Bayer; Klaus Mann

2007-01-01T23:59:59.000Z

391

Synthesis of 2'-deoxy-2'-[.sup.18F]fluoro-5-methyl-1-B-D-arabinofuranosyluracil (.sup.18F-FMAU)  

DOE Patents [OSTI]

The present invention relates to methods of synthesizing .sup.18F-FMAU. In particular, .sup.18F-FMAU is synthesized using one-pot reaction conditions in the presence of Friedel-Crafts catalysts. The one-pot reaction conditions are incorporated into a fully automated cGMP-compliant radiosynthesis module, which results in a reduction in synthesis time and simplifies reaction conditions. The one-pot reaction conditions are also suitable for the production of 5-substituted thymidine or cytidine analogs. The products from the one-pot reaction (e.g. the labeled thymidine or cytidine analogs) can be used as probes for imaging tumor proliferative activity. More specifically, these [.sup.18F]-labeled thymidine or cytidine analogs can be used as a PET tracer for certain medical conditions, including, but not limited to, cancer disease, autoimmunity inflammation, and bone marrow transplant.

Li, Zibo; Cai, Hancheng; Conti, Peter S

2014-12-16T23:59:59.000Z

392

Miscibility of blends of poly(methyl methacrylate) and oligodiols based on a bisphenol A nucleus and ethylene oxide or propylene oxide branches  

E-Print Network [OSTI]

Cloud-point curves of blends of poly(methyl methacrylate) (PMMA) with a series of oligodiols based on a bisphenol A nucleus and short branches of poly(ethylene oxide) or poly(propylene oxide) (BPA-EO or BPA-PO), and with PEO and PPO oligomers, were obtained using a light transmission device. Experimental results were fitted with the Flory- Huggins model using an interaction parameter depending on both temperature and composition. For PMMA/PEO and PMMA/PPO blends, the miscibility increased when increasing the size of the diol, due to the significant decrease in the entropic and enthalpic terms contributing to the interaction parameter. This reflected the decrease in the selfassociation of solvent molecules and in the contribution of terminal OH groups to the mismatching of solubility parameters. For PMMA/BPA-EO blends, a decrease of the entropic contribution to the interaction parameter when increasing the size of the oligodiol was also found. However, the effect was counterbalanced by the opposite contribution of combinatorial terms leading to cloud-point curves located in approximately the same temperature range. For PMMA/BPA-PO blends, the interaction parameter exhibited a very low value. In this case, the effect of solvent size was much more important on combinatorial terms than on the interaction parameter, leading to an increase in miscibility when decreasing the oligodiol size. For short BPA-PO oligodiols no phase separation was observed. The entropic contribution of the interaction parameter exhibited an inverse relationship with the size of the oligodiols, independent of the nature of the chains bearing the hydroxyls and the type of OH groups (primary or secondary). This indicates that the degree of self-association of solvent molecules through their OH terminal groups, was mainly determined by their relative sizes.

B. Jaffrennou; E. R. Soule; F. Mechin; J. Borrajo; J. P. Pascault; R. J. J. Williams

2013-11-21T23:59:59.000Z

393

Acute effects of a sarin-like organophosphorus agent, bis(isopropyl methyl)phosphonate, on cardiovascular parameters in anaesthetized, artificially ventilated rats  

SciTech Connect (OSTI)

The organophosphorus compound sarin irreversibly inhibits acetylcholinesterase. We examined the acute cardiovascular effects of a sarin-like organophosphorus agent, bis(isopropyl methyl)phosphonate (BIMP), in anaesthetized, artificially ventilated rats. Intravenous administration of BIMP (0.8 mg/kg; the LD50 value) induced a long-lasting increase in blood pressure and tended to increase heart rate. In rats pretreated with the non-selective muscarinic-receptor antagonist atropine, BIMP significantly increased both heart rate and blood pressure. In atropine-treated rats, hexamethonium (antagonist of ganglionic nicotinic receptors) greatly attenuated the BIMP-induced increase in blood pressure without changing the BIMP-induced increase in heart rate. In rats treated with atropine plus hexamethonium, intravenous phentolamine (non-selective ?-adrenergic receptor antagonist) plus propranolol (non-selective ?-adrenergic receptor antagonist) completely blocked the BIMP-induced increases in blood pressure and heart rate. In atropine-treated rats, the reversible acetylcholinesterase inhibitor neostigmine (1 mg/kg) induced a transient increase in blood pressure, but had no effect on heart rate. These results suggest that in anaesthetized rats, BIMP induces powerful stimulation of sympathetic as well as parasympathetic nerves and thereby modulates heart rate and blood pressure. They may also indicate that an action independent of acetylcholinesterase inhibition contributes to the acute cardiovascular responses induced by BIMP. - Highlights: ē A sarin-like agent BIMP markedly increased blood pressure in anaesthetized rats. ē Muscarinic receptor blockade enhanced the BIMP-induced increase in blood pressure. ē Ganglionic nicotinic receptor blockade attenuated the BIMP-induced response. ē Blockade of ?- as well as ?-receptors attenuated the BIMP-induced response.

Watanabe, Yoshimasa [Department of Pharmacology, Graduate School of Medical Sciences, Nagoya City University, Nagoya (Japan); Itoh, Takeo, E-mail: titoh@med.nagoya-cu.ac.jp [Department of Pharmacology, Graduate School of Medical Sciences, Nagoya City University, Nagoya (Japan); Shiraishi, Hiroaki [Department of Forensic Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima (Japan); Maeno, Yoshitaka [Department of Forensic Medical Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya (Japan); Arima, Yosuke; Torikoshi, Aiko; Namera, Akira [Department of Forensic Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima (Japan); Makita, Ryosuke [Department of Nursing, Faculty of Health Sciences, Hiroshima Cosmopolitan University, Hiroshima (Japan); Yoshizumi, Masao [Department of Cardiovascular Physiology and Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima (Japan); Nagao, Masataka [Department of Forensic Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima (Japan)

2013-10-01T23:59:59.000Z

394

Detailed chemical kinetic oxidation mechanism for a biodiesel surrogate  

SciTech Connect (OSTI)

A detailed chemical kinetic mechanism has been developed and used to study the oxidation of methyl decanoate, a surrogate for biodiesel fuels. This model has been built by following the rules established by Curran et al. for the oxidation of n-heptane and it includes all the reactions known to be pertinent to both low and high temperatures. Computed results have been compared with methyl decanoate experiments in an engine and oxidation of rapeseed oil methyl esters in a jet stirred reactor. An important feature of this mechanism is its ability to reproduce the early formation of carbon dioxide that is unique to biofuels and due to the presence of the ester group in the reactant. The model also predicts ignition delay times and OH profiles very close to observed values in shock tube experiments fueled by n-decane. These model capabilities indicate that large n-alkanes can be good surrogates for large methyl esters and biodiesel fuels to predict overall reactivity, but some kinetic details, including early CO{sub 2} production from biodiesel fuels, can be predicted only by a detailed kinetic mechanism for a true methyl ester fuel. The present methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.

Herbinet, O; Pitz, W J; Westbrook, C K

2007-09-20T23:59:59.000Z

395

Detailed chemical kinetic oxidation mechanism for a biodiesel surrogate  

SciTech Connect (OSTI)

A detailed chemical kinetic mechanism has been developed and used to study the oxidation of methyl decanoate, a surrogate for biodiesel fuels. This model has been built by following the rules established by Curran et al. for the oxidation of n-heptane and it includes all the reactions known to be pertinent to both low and high temperatures. Computed results have been compared with methyl decanoate experiments in an engine and oxidation of rapeseed oil methyl esters in a jet stirred reactor. An important feature of this mechanism is its ability to reproduce the early formation of carbon dioxide that is unique to biofuels and due to the presence of the ester group in the reactant. The model also predicts ignition delay times and OH profiles very close to observed values in shock tube experiments fueled by n-decane. These model capabilities indicate that large n-alkanes can be good surrogates for large methyl esters and biodiesel fuels to predict overall reactivity, but some kinetic details, including early CO2 production from biodiesel fuels, can be predicted only by a detailed kinetic mechanism for a true methyl ester fuel. The present methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.

Herbinet, O; Pitz, W J; Westbrook, C K

2007-09-17T23:59:59.000Z

396

Synthesis of nitrogen heterocycles as potential herbicidal compounds  

E-Print Network [OSTI]

of lsatin in 90% Acetic Acid. . aa ~ ~ ~ e ~ ~ o ~ o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ i ~ o ~ ~ b. Prepared by the Method Reported by Buchmsn and Sargent. . . . ~ ~ e ~ o a ~ ~ a ~ e ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Infrared Spectrum of 6, 8-Dichloro-2-methylcin- choninic... Acido ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ t ~ ~ ~ ~ ~ ~ ~ ~ ~ 4t ~ ~ ~ ~ ~ ~ ~ Page 37 3 ~ Infrared Spectrum oi' the Methyl Ester of 6, 8- Dichloro-2-methylcinchoninic Acid. . . , . ???, ?, ,?? Infrared Spectrum of the Ethyl Ester of 6, 8...

Al-Naji, Hassan Ali

2012-06-07T23:59:59.000Z

397

Total Syntheses of Linear Poly-Thiazole/Oxazole Plantazolicin A and its biosynthetic precursor Plantazolicin B  

E-Print Network [OSTI]

condensed with cysteine ethyl ester hydrochloride salt 15, before oxidation of thiazolidine 25 using manganese dioxide to give thiazole 8 in and overall yield of 42%. This yield was comparable to those obtained previously for 8, but avoided the use... , condensation with cysteine methyl ester hydrochloride 13 and MnO2 mediated oxidation to afford thiazole 4b in an acceptable 41% overall yield. This is a marked improvement on the previous synthesis for related fragments. Removal of all nitrogen protection...

Wilson, Zoe E.; Fenner, Sabine; Ley, Steven V.

2014-11-25T23:59:59.000Z

398

5 CFR 731, Suitability - Drug Testing for DOE Positions  

Broader source: Energy.gov (indexed) [DOE]

Office of Personnel Management § 731.101 written notice must include informa- tion on the applicable penalties or in- junctions that may be imposed under 18 U.S.C. 216(a), (b), and (c) for viola- tions of the post-employment restric- tions in 18 U.S.C. 207(c). The notice also must indicate that employees covered by 18 U.S.C. 207(c) are subject to 18 U.S.C. 207(f), which imposes additional post-employment restrictions on rep- resenting, aiding, or advising certain foreign entities. (b) Notwithstanding paragraph (a) of this section, the post-employment re- strictions in 18 U.S.C. 207(c) apply to covered employees without regard to whether they receive written notice from their employing agency. § 730.105 Savings provision. Any post-employment restrictions

399

A Sensorless Direct Torque Control Scheme Suitable for Electric Vehicles  

E-Print Network [OSTI]

is a good candidate for EVs propulsion. Index Terms--Electric vehicle, Induction motor, sensorless drive; however, they have not yet used the most remarkable advantages of electric motors. Indeed, an electric, Algeria. The electric propulsion system is the heart of EVs [1-2]. It consists of the motor drive

Paris-Sud XI, Université de

400

Assessing the land use suitability of mined areas in Appalachia  

SciTech Connect (OSTI)

The Land Use Decision Methodology (LUDM) is a planning framework for mined area land use planning. The LUDM was developed to consider the range of institutional and environmental factors that impact reclamation and land use planning for mined lands. The LUDM was developed as a generalized planning framework rather than a complex/rigid methodology. A matrix that supports the detailed site analysis component of the LUDM was also developed. The matrix has utility for illustrating the impacts that a number of mining related conditions/environmental problems can exert on the environmental feasibility and economics of alternative reclamation plans.

Gorton, W.T.; Yuill, C.B.

1982-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Multimodal interaction: A suitable strategy for including older users?  

Science Journals Connector (OSTI)

......control and modulate applied forces and have difficulty receiving...Human-Computer Interaction Handbook: Fundamentals, Evolving Technologies and Emerging...and speed of behavior. In: Handbook of Human Factors and the Older......

Anja B. Naumann; Ina Wechsung; JŲrn Hurtienne

2010-11-01T23:59:59.000Z

402

Process Reform, Security and Suitability- December 17, 2008  

Broader source: Energy.gov [DOE]

This is to report on the progress made to improve the timeliness and effectiveness of our hiring and clearing decisions and the specific plan to reform the process further, in accordance with our initial proposals made in April ofthis year.

403

The suitability of coal gasification in India's energy sector  

E-Print Network [OSTI]

Integrated Gasification Combined Cycle (IGCC), an advanced coal-based power generation technology, may be an important technology to help India meet its future power needs. It has the potential to provide higher generating ...

Simpson, Lori Allison

2006-01-01T23:59:59.000Z

404

Assessment of the suitability of zircons for thermoluminescence dating  

E-Print Network [OSTI]

, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands b Nuclear Geophysics Division, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands c Department of Geological

Donoghue, Joseph

405

Multimodal interaction: A suitable strategy for including older users?  

Science Journals Connector (OSTI)

......shared between environment and device, participants received only...modalities (e.g. reading of and listening to the same text simultaneously...modalities in a handheld mobile device (touch, speech, motion control...modalities in a multimodal device. In particular, we wanted......

Anja B. Naumann; Ina Wechsung; JŲrn Hurtienne

2010-11-01T23:59:59.000Z

406

Suitability of Fuzzy Systems and Neural Networks for Industrial Applications  

E-Print Network [OSTI]

IEEE #12;negative values and the resulted neuron excitation net is calculated as a sum of products within a limited signal range between zero and one. Neural networks can handle basically an unlimited signal range between zero and one. In general, all parameters of fuzzy systems are designed, while

Wilamowski, Bogdan Maciej

407

Shifting suitability for malaria vectors across Africa with warming climates  

E-Print Network [OSTI]

[http://www.ornl.gov/landscan/]. Oak Ridge, Tennessee: Oak Ridge National Laboratory 31. Coetzee M, Craig M, le Sueur D: Distribution of African malaria mosquitoes belonging to the Anopheles gambiae complex. Parasitology Today 2000, 16:74-77. 32. New M...

Peterson, A. Townsend

2009-05-10T23:59:59.000Z

408

New Metallization Technique Suitable for 6-MW Pilot Production...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of 16% based on 100% UMG Si. This was reached in December 2008 with the demonstration of energy conversion efficiency greater than 16% on two 6-in. cells using 100% UMG Si...

409

Electrically calibrated absolute radiometer suitable for measurement automation  

Science Journals Connector (OSTI)

New electrically calibrated absolute radiometers (ESRs) were developed having fast response and high responsivity; these ESRs are specially useful for measurement automation. They are...

Boivin, Louis-Philippe; McNeely, Francis T

1986-01-01T23:59:59.000Z

410

Mercury Monohalides: Suitability for Electron Electric Dipole Moment Searches  

E-Print Network [OSTI]

Heavy polar diatomic molecules are the primary tools for searching for the T-violating permanent electric dipole moment of the electron (eEDM). Valence electrons in some molecules experience extremely large effective electric fields due to relativistic interactions. These large effective electric fields are crucial to the success of polar-molecule-based eEDM search experiments. Here we report on the results of relativistic ab initio calculations of the effective electric fields in a series of molecules that are highly sensitive to an eEDM, the mercury monohalides (HgF, HgCl, HgBr,and HgI). We study the influence of the halide anions on effective electric field, and identify HgBr and HgI as interesting candidates for future electric dipole moment search experiments.

Prasannaa, V S; Abe, M; Das, B P

2014-01-01T23:59:59.000Z

411

Fixing the Java bytecode verifier by a suitable type domain  

Science Journals Connector (OSTI)

The Java Virtual Machine embodies a verifier which performs a set of checks on bytecode programs before their execution. The verifier performs a data-flow analysis applied to a type-level abstract interpretation of the code. The current implementations ...

Roberto Barbuti; Luca Tesei; Cinzia Bernardeschi; Nicoletta De Francesco

2002-07-01T23:59:59.000Z

412

Location, location, location: finding a suitable home among the noise  

Science Journals Connector (OSTI)

...a macroalgae-dominated rocky reef; Whangateau Harbour...other external sources. The flat response at approximately 35...e. habitats associated with rocky or coral reefs. By contrast...preferred settlement habitat, rocky reef [39]. This previous...

2012-01-01T23:59:59.000Z

413

Identifying Suitable Degradation Parameters for Individual-Based Prognostics  

SciTech Connect (OSTI)

The ultimate goal of most prognostic systems is accurate prediction of the remaining useful life of individual systems or components based on their use and performance. Traditionally, individual-based prognostic methods use a measure of degradation to make lifetime estimates. Degradation measures may include sensed measurements, such as temperature or vibration level, or inferred measurements, such as model residuals or physics-based model predictions. Often, it is beneficial to combine several measures of degradation into a single parameter. Parameter features such as trendability, monotonicity, and prognosability can be used to compare candidate prognostic parameters to determine which is most useful for individual-based prognosis. By quantifying these features for a given parameter, the metrics can be used with any traditional optimization technique to identify an appropriate parameter. This parameter may be used with a parametric extrapolation model to make prognostic estimates for an individual unit. The proposed methods are illustrated with an application to simulated turbofan engine data.

Coble, Jamie B.; Hines, Wes

2012-09-30T23:59:59.000Z

414

Viscosity of aqueous and cyanate ester suspensions containing alumina nanoparticles.  

E-Print Network [OSTI]

??Concentrated aqueous alumina nanoparticle suspensions with additions of saccharides such as fructose, glucose, sucrose, and others were studied by rheometry and low temperature differential scanningÖ (more)

Lawler, Katherine Ann

2009-01-01T23:59:59.000Z

415

Numerical models of phosphate esters in the Chattahoochee River  

E-Print Network [OSTI]

A numerical model was constructed to assess the magnitude of organophosphoric acid triester sinks in the Chattahoochee River and to identify concentration patterns downstream of point source discharges. The model was built ...

Haffey, Samuel Fraad, 1973-

2004-01-01T23:59:59.000Z

416

Heats of Combustion of Fatty Acids and Fatty Acid Esters  

Science Journals Connector (OSTI)

...The military uses JP-8, a kerosene type hydrocarbon, to fuel most of its vehicles and ... , no traditional biodiesel meets the requirements for heat of combustion, freezing point, viscosity and oxidative stabi...

Felicia Levine; Ronald V. Kayea IIIÖ

2014-02-01T23:59:59.000Z

417

Springer-Verlag Berlin Heidelberg 2003 Bioaccumulation of Phthalate Esters  

E-Print Network [OSTI]

Bioaccumulation Factors BBP Butylbenzyl Phthalate BCFs Bioconcentration Factors BSAF Biota-Sediment Accumulation F

Gobas, Frank

418

Preparation of thio and seleno sugar esters of dimethylantimonous acid  

E-Print Network [OSTI]

arsenic in the periodic table and an extension of the work done with arsenic and phosphorus to include the antimony analogues presents a logical extension of this effort. 12 Sagan, et al. , have prepared eaters of dialkyl- arsinous acids using... in the preparation of the phosphorus analogues of the sugar arsenites. The synthesis of dialkylphosphinous acid eaters of the thio and seleno sugars was effected via the reaction of symmetrical tetraalkyldiphosphines with bis(2, 3, 4, 6 ? tetra-0-acetyl...

Baimbridge, Charles Lynn

2012-06-07T23:59:59.000Z

419

Perfluoro Aryl Boronic Esters as Chemical Shuttle Additives  

Broader source: Energy.gov (indexed) [DOE]

Barriers * Barriers addressed - D. Abuse Tolerance, Reliability and Ruggedness - A. Cost - E. Life * Technical Target - to employ a redox shuttle molecule in a large format...

420

Quantitative relationships between structure and reactivity of aliphatic esters  

E-Print Network [OSTI]

bnglneering -xpcrtuent station and fron the Robert A. belch IIosearoh Foundation. Introduat ion . ' ethos of ~lysis ~ 0 Quleul-. tion of;1~to Oonst nt, s : iste riel s ~ o ~ I. 'iyters ~ ~ ~ 16 lC 11, . i~::' . ' Crt ~d*iP' 1~&'" :~ppsrstus z&& rl...-tt'rdor Rotc Cansta, ts for . :. oetntas IIIc. Ceoond- rder ". :;te Const tots ". tr Identicr lly Jis tbstt ttttod stars 't 0 IV. Ct, t" an "ct. 'tyl stere V. . )c' o~ cot otcs z2 'tl, . &oto on fde. otic. . t ly Cisubctitttted . . coors . 1. mymificction...

Yager, Billy Joe

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Exact analysis of polycrystalline electron spin echo envelope modulation including mutual nuclear arrangements and quadrupole interactions and its application to methyl radicals in irradiated crystals of lithium acetate dihydrate  

Science Journals Connector (OSTI)

The method of exact analysis including mutual nuclear arrangements and quadrupole interactions is developed for electron spin echo envelope modulation (ESEM) from polycrystalline samples using the formulation in an arbitrary laboratory coordinate system which makes it possible to perform an exact angular integration. In order to assess polycrystalline ESEM by comparing with electron nuclear double resonance(ENDOR) data the method is applied to analyze deuterium hyperfine modulation on the two?pulse electron spin echo (ESE) envelope decay observed for methyl radicals radiolytically produced in CD3COOLi???2H2O and CH3COOLi???2D2O. The results are totally consistent with our previous study by single crystal1H ENDOR. Through this application importance of the nuclear quadrupole term is also shown based on the exact method. The rigid deuterons in the water of crystallization show a marked quadrupole effect as compared with those in the freely rotating CD3 group. The contributions from the distant nuclei to the modulation pattern are also studied by the exact method using the crystallographic data. We have further clarified that the origin of the disagreement of a previous Li ESEM with our ENDOR is mainly in the use of a unit spin density on the spin probe despite its reduction by delocalization to the environment.

Machio Iwasaki; Kazumi Toriyama

1985-01-01T23:59:59.000Z

422

Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830  

E-Print Network [OSTI]

challenges is the conversion of the algae lipids to fungible fuels. This brief literature review focuses be applied to ongoing research with algae- derived lipids. Algae lipids (oil) are similar to other oils as fatty acid methyl esters, or FAMEs, which are widely used as biodiesel. An alternate processing route

423

Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels  

E-Print Network [OSTI]

in simulations of biodiesel oxidation in jet-stirred reactor and intermediate shock tube ignition and oxidation in the relative amounts of the same five methyl ester components. Keywords: Biofuels; Reaction mechanisms intermediate species produced during biofuel combustion that are not present in combustion of more conventional

Paris-Sud XI, Université de

424

Effect of Ethanol on Blending Stability and Diesel Engine Emissions  

Science Journals Connector (OSTI)

Effect of Ethanol on Blending Stability and Diesel Engine Emissions ... Industrial & Engineering Chemistry Research2013 52 (44), 15504-15508 ... This article describes the effects of hydroxylated biodiesel (castor oil methyl ester Ė COME) on the properties, combustion, and emissions of butanolĖdiesel blends used within compression ignition engines. ...

MagŪn Lapuerta; Octavio Armas; Reyes GarcŪa-Contreras

2009-07-28T23:59:59.000Z

425

Investigation of the Performance and Emission Characteristics of Biodiesel Fuel Containing Butanol under the Conditions of Diesel Engine Operation  

Science Journals Connector (OSTI)

(17) However, emissions of engines fueled with multicomponent fuels containing fossil diesel, butanol, and rapeseed oil butyl/methyl esters have not been tested. ... Break specific fuel consumption when engine is fuelled with fossil diesel fuel (n = 1500 min?1). ... For all cases, engine torque was retained the same by adjusting fueling rate. ...

Sergejus Lebedevas; Galina Lebedeva; Egle Sendzikiene; Violeta Makareviciene

2010-07-23T23:59:59.000Z

426

Chlorophyll-Derived, Cyclic Tetrapyrrole-Based Purpurins as Efficient Near-Infrared-Absorption Donor Materials for Dye-Sensitized and Organic Solar Cells  

Science Journals Connector (OSTI)

Near-infrared-absorbing chlorophyll derivatives, namely purpurin-18 methyl esters, with (c-H2P and c-ZnP) and without (H2P and ZnP) carboxyl group at the C3 position of chlorin macrocycle have been studied in eit...

Taojun Zhuang; Yuwei Wang; Xiao-Feng Wang

2014-01-01T23:59:59.000Z

427

Barrier to Rotation around the Csp2-Csp2 Bond of the Ketoaldehyde Enol Ether MeC(O)CHCH?OEt As Determined by 13C NMR and ab Initio Calculations  

Science Journals Connector (OSTI)

NMR measurements and ab initio calculations were applied to determine the barriers to rotation around formally single bonds of the title methyl-?-ethoxyvinyl ketone, i.e., the vinylogue of the ethyl ester of acetic acid. For comparison, ab initio ...

Hans-Christian Siebert; Emad Tajkhorshid; Janusz Dabrowski

2001-08-22T23:59:59.000Z

428

Acetic Acid from the Carbonylation of Chloride Methane Over Rhodium Based Catalysts  

E-Print Network [OSTI]

of commercially important materials like vinyl acetate monomer (VAM), cellulose acetate, and acetate esters. MoreAcetic Acid from the Carbonylation of Chloride Methane Over Rhodium Based Catalysts Yafang Fan √? that makes use of the latest advance in methyl chloride production is reported. Acetic acid was produced from

Bao, Xinhe

429

Green waxes, adhesives and lubricants  

Science Journals Connector (OSTI)

...predicted shortage of energy resources and environmental...the development of green waxes, adhesives...acid methyl esters. Green Chem. 9, 469-474...synergistic antioxidants. Energy Fuels 21, 2408-2414...predicted shortage of energy resources and environmental...the development of green waxes, adhesives...

2010-01-01T23:59:59.000Z

430

Smog and Photochemical Pollution First observed in Los Angeles  

E-Print Network [OSTI]

) #15; Best approach: avoid petroleum fuels: alternative energy sources like biodiesel { Biodiesel: rape { Introduction of NO and hydrocarbons (RH) shifts natural balance of NO x =O 3 and OH cycles Daily Cycle 1. Cars methyl ester (RME) produced from rapeseed oil (vegetable oil) can be used directly in diesel engines

Schofield, Jeremy

431

Gas-Liquid Chromatographic Analysis of Long-Chain Fatty Alcohols  

Science Journals Connector (OSTI)

......6 FEBRUARY 1968 of lithium aluminum hydride hydrogenolysis...starting materials for the synthesis of glyceryl ethers...polar liquid phases. Acetate derivatives used by...TMS) and trifluoro- acetate (TFA) derivatives...the methyl esters by lithium aluminum hydride reduction......

Randall Wood

1968-02-01T23:59:59.000Z

432

BEHAVIOR, CHEMICAL ECOLOGY Role of Bacteria in Mediating the Oviposition Responses  

E-Print Network [OSTI]

these substrates and from an organic infusion made with oak leaves. Through fatty acid-methyl ester analyses, six isolates from oak leaf infusion were identi√?ed to species. The response of gravid (from soil-contaminated cotton towels), and an undetermined Bacillus species (from oak leaf infusion

433

A novel extracellular cyclic lipopeptide which promotes flagellum-dependent and -independent spreading growth of Serratia marcescens.  

Science Journals Connector (OSTI)

...acid analyzer was used for amino acid composition analysis. A C-terminal amino acid...GLC-MS also indicated the percentage compositions of the methyl esters. Composi- tions...229-253. 5. Fokkema, N. J. 1988. Agrochemicals and beneficial role of phyllosphere...

T Matsuyama; K Kaneda; Y Nakagawa; K Isa; H Hara-Hotta; I Yano

1992-03-01T23:59:59.000Z

434

Influence of Fatty Acid Structure on Fuel Properties of Algae Derived Biodiesel  

Science Journals Connector (OSTI)

Abstract Physical and chemical properties of biofuel are influenced by structural features of fatty acid such as chain length, degree of unsaturation and branching of the chain. A simple and reliable calculation method to estimate fuel property is therefore needed to avoid experimental testing which is difficult, costly and time consuming. Typically in commercial biodiesel production such testing is done for every batch of fuel produced. In this study 9 different algae species were selected that were likely to be suitable for subtropical climates. The fatty acid methyl esters (FAMEs) of all algae species were analysed and the fuel properties like cetane number (CN), cold filter plugging point (CFPP), kinematic viscosity (KV), density and higher heating value (HHV) were determined. The relation of each fatty acid with particular fuel property is analysed using multivariate and multi-criteria decision method (MCDM) software. They showed that some fatty acids have major influences on the fuel properties whereas others have minimal influence. Based on the fuel properties and amounts of lipid content rank order is drawn by PROMETHEE-GAIA which helped to select the best algae species for biodiesel production in subtropical climates. Three species had fatty acid profiles that gave the best fuel properties although only one of these (Nannochloropsis oculata) is considered the best choice because of its higher lipid content.

Muhammad Aminul Islam; Godwin A. Ayoko; Richard Brown; Doug Stuart; Kirsten Heimann

2013-01-01T23:59:59.000Z

435

Counter-anion role in the formation of two supra≠molecular complexes: [Ag2(DPP)2](ClO4)2?CH3CN and [Ag2(DPP)2(NO3)2] {DPP is N-[(di≠phenyl≠phosphanyl)methyl]pyridin-4-amine}  

Science Journals Connector (OSTI)

In the Ag complex of N-[(di≠phenyl≠phosphanyl)methyl]pyridin-4-amine (DPP) with perchlorate, the unique Ag+ cation has a near-linear coordination geometry consisting of one pyridine N atom and one P atom from two different DPP ligands. In the analogous complex with nitrate, the nitrate anions weakly chelate to each Ag+ cation, leading to each Ag+ cation having a distorted tetra≠hedral coordination geometry consisting of one pyridine N atom and one P atom from two different DPP ligands, and two chelating nitrate O atoms.

Liang, G.-M.

2014-03-25T23:59:59.000Z

436

Molecular Cell Methylation of a Histone Mimic  

E-Print Network [OSTI]

,3 Andrew N. Krutchinsky,2 Ingrid Mecklenbra¨ uker,1 Agnes Viale,5 Eugene Rudensky,1 Ming-Ming Zhou,4., 2004; Huang et al., 2006; Kouskouti et al., 2004; Zhang et al., 2005). In contrast, little progr

Chait, Brian T.

437

Phytoremediation of Ionic and Methyl Mercury P  

SciTech Connect (OSTI)

Our long-term goal is to enable highly productive plant species to extract, resist, detoxify, and/or sequester toxic heavy metal pollutants as an environmentally friendly alternative to physical remediation methods. We have focused this phytoremediation research on soil and water-borne ionic and methylmercury. Mercury pollution is a serious world-wide problem affecting the health of human and wild-life populations. Methylmercury, produced by native bacteria at mercury-contaminated wetland sites, is a particularly serious problem due to its extreme toxicity and efficient biomagnification in the food chain. We engineered several plant species (e.g., Arabidopsis, tobacco, canola, yellow poplar, rice) to express the bacterial genes, merB and/or merA, under the control of plant regulatory sequences. These transgenic plants acquired remarkable properties for mercury remediation. (1) Transgenic plants expressing merB (organomercury lyase) extract methylmercury from their growth substrate and degrade it to less toxic ionic mercury. They grow on concentrations of methylmercury that kill normal plants and accumulate low levels of ionic mercury. (2) Transgenic plants expressing merA (mercuric ion reductase) extract and electrochemically reduce toxic, reactive ionic mercury to much less toxic and volatile metallic mercury. This metal transformation is driven by the powerful photosynthetic reducing capacity of higher plants that generates excess NADPH using solar energy. MerA plants grow vigorously on levels of ionic mercury that kill control plants. Plants expressing both merB and merA degrade high levels of methylmercury and volatilize metallic mercury. These properties were shown to be genetically stable for several generations in the two plant species examined. Our work demonstrates that native trees, shrubs, and grasses can be engineered to remediate the most abundant toxic mercury pollutants. Building on these data our working hypothesis for the next grant period is that transgenic plants expressing the bacterial merB and merA genes will (a) remove mercury from polluted soil and water and (b) prevent methylmercury from entering the food chain. Our specific aims center on understanding the mechanisms by which plants process the various forms of mercury and volatilize or transpire mercury vapor. This information will allow us to improve the design of our current phytoremediation strategies. As an alternative to volatilizing mercury, we are using several new genes to construct plants that will hyperaccumulate mercury in above-ground tissues for later harvest. The Department of Energy's Oak Ridge National Laboratory and Brookhaven National Laboratory have sites with significant levels of mercury contamination that could be cleaned by applying the scientific discoveries and new phytoremediation technologies described in this proposal. The knowledge and expertise gained by engineering plants to hyperaccumulate mercury can be applied to the remediation of other heavy metals pollutants (e.g., arsenic, cesium, cadmium, chromium, lead, strontium, technetium, uranium) found at several DOE facilities.

Meagher, Richard B.

1999-06-01T23:59:59.000Z

438

Conformation-Selective Methylation of Geminivirus DNA  

Science Journals Connector (OSTI)

...X15984) (22) were inoculated into the experimental host Nicotiana benthamiana Domin and grown in a greenhouse with supplementary lighting or in a climate chamber as described previously (81), under containment according to gene technology...

T. Paprotka; K. Deuschle; V. Metzler; H. Jeske

2011-08-10T23:59:59.000Z

439

Effects of Biodiesel from Used Frying Palm Oil on the Exhaust Emissions of an Indirect Injection (IDI) Diesel Engine  

Science Journals Connector (OSTI)

McDonald (27) studied a 50% blend of yellow grease methyl ester with No. 2 diesel fuel (B50) used in a General Motors L65 GMT 600 turbo-charged, IDI diesel engine. ... This is typical for diesel engines because the air?fuel equivalence ratio slightly decreases with an increasing engine speed. ... A 1994 Dodge 2500 turbocharged and intercooled diesel pickup fueled with 100% Et ester of rapeseed oil was driven by personnel representing the University of Idaho, Agricultural Engineering Department from Moscow, Idaho to Los Angeles, California and back to Moscow and then from Moscow to Ocean City, Maryland and back to Moscow, Idaho. ...

Ahmet Necati Ozsezen; Mustafa Canakci; Cenk Sayin

2008-06-28T23:59:59.000Z

440

A fivefold inter≠penetrating diamond≠oid three-dimensional metal-organic framework constructed from benzene-1,4-di≠acetic acid and flexible triazole derivatives: poly[[(2-benzene-1,4-di≠acetato-2O:O){2-1,4-bis≠[(1H-1,2,4-triazol-1-yl)methyl]benzene-2N4:N4'}zinc(II)] monohydrate  

Science Journals Connector (OSTI)

The title compound has a fivefold inter≠penetrating diamondoid three-dimensional metal-organic framework, with each ZnII centre surrounded by two O-donor atoms from monodentate carboxyl≠ate groups belonging to two different benzene-1,4-di≠acetate ligands and by two triazole N-donor atoms from two different 1,4-bis≠[(1H-1,2,4-triazol-1-yl)methyl]benzene ligands.

Shen, H.

2013-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Combustion, performance and emission characteristics of a DI CI engine using biodiesel with varied fatty acid composition  

Science Journals Connector (OSTI)

Five Biodiesel produced from different vegetable oils were tested on a diesel engine to study the effect of biodiesel fatty acid composition specifically unsaturated composition on the engine combustion. The results from fuel analysis show that biodiesel (93% unsaturated fatty acid ester composition) with 55% linolenic ester has a higher density of 0.89 kg/m≥, lower viscosity of 3.8 cSt, heating value of 39 MJ/kg and cetane number of 49. The engine combustion results exhibits a longer premixed and shorter diffusion burning phase with higher peak pressure of 72 bars and higher cumulative heat release compared to other fatty ester composition. The performance and emission results show that emits more oxides of nitrogen of 16.83 g/kWh and exhibits higher thermal efficiency of 29.76% compared to diesel of 12.83 g/kWh and 28.41% respectively. Biodiesel with 45% saturated ester and 55% unsaturated ester composition shows a NOX neutral fuel with a penalty of 1.75% in thermal efficiency. No significant differences in unburnt hydrocarbon (UBHC), carbon monoxide (CO) and smoke emissions among the biodiesel fuels were noticed except linseed oil methyl ester.

Sukumar Puhan; A. Gopinath; G. Nagarajan

2009-01-01T23:59:59.000Z

442

As Global energy consumption rises, more research is being conducted towards alternative renewable  

E-Print Network [OSTI]

renewable fuels. · Combustion modeling is being used to simulate biodiesel combustion in diesel engines operate suitably in a diesel engine. · These results also demonstrate that the methyl oleate could-1039787" Investigation of Methyl Oleate as a Surrogate Fuel for Biodiesel, in a Direct Injection Diesel

Hutcheon, James M.

443

Formation of Methyl Nitrite and Methyl Nitrate during Plasma Treatment of Diesel Exhaust  

Science Journals Connector (OSTI)

FTIR spectroscopy was used to identify CH3ONO and CH3ONO2 as products of the nonthermal plasma treatment of simulated diesel exhaust. This is the first observation of CH3ONO formation in such systems. The yield of CH3ONO relative to CH3ONO2 scaled ...

T. J. Wallington; J. W. Hoard; M. P. Sulbaek Andersen; M. D. Hurley; Y. Nakano; M. Kawasaki

2003-08-08T23:59:59.000Z

444

The Role of the Ocean in the Atmospheric Budgets of Methyl Bromide, Methyl Chloride and Methane  

E-Print Network [OSTI]

of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Shari A. Yvon-Lewis Committee Members, John D. Kessler Robert Rhew Gunnar W. Schade... to work with her. I would like to thank my committee members, Drs. John D. Kessler, Robert Rhew and Gunnar W. Schade. I went to two cruises with John and coauthored several papers with him. He gave me a lot of help and inspiration for methane study. He...

Hu, Lei

2012-10-19T23:59:59.000Z

445

Identification of Differentially Methylated Sequences in Colorectal Cancer by Methylated CpG Island Amplification  

Science Journals Connector (OSTI)

...genotype of each panel was determined. Linkage analysis was performed using the RH server of Stanford University (http://www-shgc.stanford.edu/RH/index.html). PCR primer sequences used to amplify each clone are available upon request. RT-PCR...

Minoru Toyota; Coty Ho; Nita Ahuja; Kam-Wing Jair; Qing Li; Mutsumi Ohe-Toyota; Stephen B. Baylin; Jean-Pierre J. Issa

1999-05-15T23:59:59.000Z

446

Biodiesel Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Biodiesel Basics Biodiesel Basics Biodiesel Basics July 30, 2013 - 2:43pm Addthis Looking for Biodiesel stations? Checkout the Alternative Fuels Data Center station locator. Biodiesel station locator Biodiesel is a domestically produced, renewable fuel that can be manufactured from vegetable oils, animal fats, or recycled restaurant greases. What is Biodiesel? Biodiesel is a liquid fuel made up of fatty acid alkyl esters, fatty acid methyl esters, or long-chain mono alkyl esters. It is produced from renewable sources such as new and used vegetable oils and animal fats and is a cleaner-burning replacement for petroleum-based diesel fuel. It is nontoxic and biodegradable. Like petroleum diesel, biodiesel is used to fuel compression-ignition (diesel) engines. B20, which is 20% biodiesel and 80% petroleum diesel, is

447

Reduction of NOx emission on NiCrAl-Titanium Oxide coated direct injection diesel engine fuelled with radish (Raphanus sativus) biodiesel  

Science Journals Connector (OSTI)

The main aim of this study is the experimental investigation of single cylinder DI diesel engine with and without coating. Diesel and radish (Raphanus sativus) oil Methyl Ester are used as fuels and the results are compared to find the effect of biodiesel in a thermal barrier coating engine. For this purpose engine cylinder head valves and piston crown are coated with 100??m of nickel-chrome-aluminium bond coat and 450??m of TiO2 by the plasma spray method. Radish oil methyl ester is produced by the transesterification process method. From the experimental investigation slight increase in specific fuel consumption in thermal barrier coating engine is observed when compared with the uncoated engine whereas NOx HC Smoke and CO emissions decreased with coated engine for all test fuels used in the coated engine when compared with that of the uncoated engine.

V. Ravikumar; D. Senthilkumar

2013-01-01T23:59:59.000Z

448

LLNL Chemical Kinetics Modeling Group  

SciTech Connect (OSTI)

The LLNL chemical kinetics modeling group has been responsible for much progress in the development of chemical kinetic models for practical fuels. The group began its work in the early 1970s, developing chemical kinetic models for methane, ethane, ethanol and halogenated inhibitors. Most recently, it has been developing chemical kinetic models for large n-alkanes, cycloalkanes, hexenes, and large methyl esters. These component models are needed to represent gasoline, diesel, jet, and oil-sand-derived fuels.

Pitz, W J; Westbrook, C K; Mehl, M; Herbinet, O; Curran, H J; Silke, E J

2008-09-24T23:59:59.000Z

449

Direct conversion of algal biomass to biofuel  

SciTech Connect (OSTI)

A method and system for providing direct conversion of algal biomass. Optionally, the method and system can be used to directly convert dry algal biomass to biodiesels under microwave irradiation by combining the reaction and combining steps. Alternatively, wet algae can be directly processed and converted to fatty acid methyl esters, which have the major components of biodiesels, by reacting with methanol at predetermined pressure and temperature ranges.

Deng, Shuguang; Patil, Prafulla D; Gude, Veera Gnaneswar

2014-10-14T23:59:59.000Z

450

Reaction Profiles during Exhaust-Assisted Reforming of Diesel Engine Fuels  

Science Journals Connector (OSTI)

Reaction Profiles during Exhaust-Assisted Reforming of Diesel Engine Fuels ... The reforming efficiency was dependent on the fuel type and followed the general trend of bioethanol > rapeseed methyl ester > low-sulfur diesel fuel. ... The use of exhaust gas recirculation (EGR) in diesel engines reduces nitrogen oxide (NOx) emissions but results in an increased release of smoke and particulate matter (PM), as well as higher fuel consumption. ...

A. Tsolakis; A. Megaritis; S. E. Golunski

2005-03-10T23:59:59.000Z

451

Lipid Metabolism, Learning Ability and Potential Biomarkers for Atherosclerosis in Monk Parrots (Myiopsitta monachus) Fed N-3 Fatty Acids  

E-Print Network [OSTI]

EC Esterified Cholesterol EOOC Extinguish the Open One Cube Behavior EPA Eicosapentaenoic Acid FAMEs Fatty Acid Methyl Esters FC Free Cholesterol FLX Flaxseed Diet HALA High ?-Linolenic Acid Diet HDL High-Density Lipoprotein LA Linoleic Acid... LALA Low ?-Linolenic Acid Diet LDL Low-Density Lipoprotein LP-C Lipoprotein Cholesterol ix MALA Medium ?-Linolenic Acid Diet MDA Malondialdehyde OOC Open One Cube Learning Task PUFA Polyunsaturated Fatty Acid ROOC Relearn Open One Cube Learning...

Petzinger, Christina

2012-07-16T23:59:59.000Z

452

Simple uniaxial pressure device for ac-susceptibility measurements suitable for closed cycle refrigerator system  

SciTech Connect (OSTI)

A simple design of the uniaxial pressure device for the measurement of ac-susceptibility at low temperatures using closed cycle refrigerator system is presented for the first time. This device consists of disc micrometer, spring holder attachment, uniaxial pressure cell, and the ac-susceptibility coil wound on stycast bobbin. It can work under pressure till 0.5 GPa and at the temperature range of 30-300 K. The performance of the system at ambient pressure is tested and calibrated with standard paramagnetic salts [Gd{sub 2}O{sub 3}, Er{sub 2}O{sub 3}, and Fe(NH{sub 4}SO{sub 4}){sub 2}6H{sub 2}O], Fe{sub 3}O{sub 4}, Gd metal, Dy metal, superconductor (YBa{sub 2}Cu{sub 3}O{sub 7}), manganite (La{sub 1.85}Ba{sub 0.15}MnO{sub 3}), and spin glass material (Pr{sub 0.8}Sr{sub 0.2}MnO{sub 3}). The performance of the uniaxial pressure device is demonstrated by investigating the uniaxial pressure dependence of La{sub 1.85}Ba{sub 0.15}MnO{sub 3} single crystal with P parallel c axis. The Curie temperature (T{sub c}) decreases as a function of pressure with P parallel c axis (dT{sub c}/dP{sub parallelcaxis}=-11.65 K/GPa) up to 46 MPa. The design is simple, is user friendly, and does not require pressure calibration. Measurement can even be made on thin and small size oriented crystals. The failure of the coil is remote under uniaxial pressure. The present setup can be used as a multipurpose uniaxial pressure device for the measurement of Hall effect and thermoelectric power with a small modification in the pressure cell.

Arumugam, S.; Manivannan, N.; Murugeswari, A. [High Pressure Low Temperature Lab, School of Physics, Bharathidasan University, Tiruchirappalli 620 024 (India)

2007-06-15T23:59:59.000Z

453

A high etendue spectrometer suitable for core charge eXchange recombination spectroscopy on ITER  

SciTech Connect (OSTI)

A feasibility study for the use of core charge exchange recombination spectroscopy on ITER has shown that accurate measurements on the helium ash require a spectrometer with a high etendue of 1mm{sup 2}sr to comply with the measurement requirements [S. Tugarinov et al., Rev. Sci. Instrum. 74, 2075 (2003)]. To this purpose such an instrument has been developed consisting of three separate wavelength channels (to measure simultaneously He/Be, C/Ne, and H/D/T together with the Doppler shifted direct emission of the diagnostic neutral beam, the beam emission (BES) signal), combining high dispersion (0.02 nm/pixel), sufficient resolution (0.2 nm), high efficiency (55%), and extended wavelength range (14 nm) at high etendue. The combined measurement of the BES along the same sightline within a third wavelength range provides the possibility for in situ calibration of the charge eXchange recombination spectroscopy signals. In addition, the option is included to use the same instrument for measurements of the fast fluctuations of the beam emission intensity up to 2 MHz, with the aim to study MHD activity.

Jaspers, R. J. E.; Scheffer, M. [Science and Technology of Nuclear Fusion, Eindhoven University of Technology, Eindhoven (Netherlands); Kappatou, A. [FOM Institute DIFFER - Dutch Institute for Fundamental Energy Research, Association EURATOM-FOM, Nieuwegein (Netherlands); Valk, N. C. J. van der; Durkut, M.; Snijders, B. [TNO Science and Industry, P.O. Box 155, 2600 AD Delft (Netherlands); Marchuk, O.; Biel, W. [Institut fuer Energie und Klimaforschung-IEK-4 Forschungszentrum, Juelich GmbH, 52425 Juelich (Germany); Pokol, G. I. [Institute of Nuclear Techniques, Budapest University of Technology and Economics, EURATOM Association, P. O. Box 91, H-1521 Budapest (Hungary); Erdei, G. [Department of Atomic Physics, Budapest University of Technology and Economics, EURATOM Association, P. O. Box 91, H-1521 Budapest (Hungary); Zoletnik, S.; Dunai, D. [WIGNER RCP, RMKI, EURATOM Association, P. O. Box 91, H-1521 Budapest (Hungary)

2012-10-15T23:59:59.000Z

454

J Nucl Med . Author manuscript Noninternalizing monoclonal antibodies are suitable candidates for I125  

E-Print Network [OSTI]

decays were calculated. These values were used to calculate the irradiation dose by the MIRD formalism

Paris-Sud XI, Université de

455

An improved parallel hybrid bi-conjugate gradient method suitable for distributed parallel computing  

Science Journals Connector (OSTI)

An improved parallel hybrid bi-conjugate gradient method (IBiCGSTAB(2) method, in brief) for solving large sparse linear systems with nonsymmetric coefficient matrices is proposed for distributed parallel environments. The method reduces five global ... Keywords: Distributed parallel environments, Global communication, IBiCGSTAB(2) method, Krylov subspace method, Sparse nonsymmetric linear system

Tong-Xiang Gu; Xian-Yu Zuo; Xing-Ping Liu; Pei-Lu Li

2009-04-01T23:59:59.000Z

456

An integrated approach to evaluating the suitability of the Potosi Dolomite as a carbon sequestration target  

Science Journals Connector (OSTI)

...The Eminence is a relatively light-colored, fine- to medium-grained dolomite that contains abundant chert, quartz grains...thick to massively bedded, gray to light brown, fine- to medium-crystalline dolomite characterized by vugs lined with dolomite...

Hannes E. Leetaru; Valeri Smith; Yasmin Adushita; Jared T. Freiburg

457

Biomass waste gasification - Can be the two stage process suitable for tar reduction and power generation?  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Comparison of one stage (co-current) and two stage gasification of wood pellets. Black-Right-Pointing-Pointer Original arrangement with grate-less reactor and upward moving bed of the pellets. Black-Right-Pointing-Pointer Two stage gasification leads to drastic reduction of tar content in gas. Black-Right-Pointing-Pointer One stage gasification produces gas with higher LHV at lower overall ER. Black-Right-Pointing-Pointer Content of ammonia in gas is lower in two stage moving bed gasification. - Abstract: A pilot scale gasification unit with novel co-current, updraft arrangement in the first stage and counter-current downdraft in the second stage was developed and exploited for studying effects of two stage gasification in comparison with one stage gasification of biomass (wood pellets) on fuel gas composition and attainable gas purity. Significant producer gas parameters (gas composition, heating value, content of tar compounds, content of inorganic gas impurities) were compared for the two stage and the one stage method of the gasification arrangement with only the upward moving bed (co-current updraft). The main novel features of the gasifier conception include grate-less reactor, upward moving bed of biomass particles (e.g. pellets) by means of a screw elevator with changeable rotational speed and gradual expanding diameter of the cylindrical reactor in the part above the upper end of the screw. The gasifier concept and arrangement are considered convenient for thermal power range 100-350 kW{sub th}. The second stage of the gasifier served mainly for tar compounds destruction/reforming by increased temperature (around 950 Degree-Sign C) and for gasification reaction of the fuel gas with char. The second stage used additional combustion of the fuel gas by preheated secondary air for attaining higher temperature and faster gasification of the remaining char from the first stage. The measurements of gas composition and tar compound contents confirmed superiority of the two stage gasification system, drastic decrease of aromatic compounds with two and higher number of benzene rings by 1-2 orders. On the other hand the two stage gasification (with overall ER = 0.71) led to substantial reduction of gas heating value (LHV = 3.15 MJ/Nm{sup 3}), elevation of gas volume and increase of nitrogen content in fuel gas. The increased temperature (>950 Degree-Sign C) at the entrance to the char bed caused also substantial decrease of ammonia content in fuel gas. The char with higher content of ash leaving the second stage presented only few mass% of the inlet biomass stream.

Sulc, Jindrich; Stojdl, Jiri; Richter, Miroslav; Popelka, Jan [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kralova Vysina 7, 400 96 Usti nad Labem (Czech Republic); Svoboda, Karel, E-mail: svoboda@icpf.cas.cz [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kralova Vysina 7, 400 96 Usti nad Labem (Czech Republic); Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 02 Prague 6 (Czech Republic); Smetana, Jiri; Vacek, Jiri [D.S.K. Ltd., Ujezdecek - Dukla 264, 415 01 Teplice I (Czech Republic); Skoblja, Siarhei; Buryan, Petr [Dept. of Gas, Coke and Air protection, Institute of Chemical Technol., Technicka 5, 166 28 Prague 6 (Czech Republic)

2012-04-15T23:59:59.000Z

458

Development and management of a radon assessment strategy suitable for underground railway tunnelling projects  

Science Journals Connector (OSTI)

......annum for the duration of each project. INTRODUCTION The construction...best practice at the time of project development and for tunnelling...national authorities are at liberty to choose a different (lower...throughout the duration of the project. Pylon radon gas and radon......

C. J. Purnell; G. Frommer; K. Chan; A. A. Auch

2004-04-01T23:59:59.000Z

459

Low-frequency piezoelectric energy harvesting prototype suitable for the MEMS implementation  

Science Journals Connector (OSTI)

A low-frequency piezoelectric energy harvester based on impact vibration assembled with a compliant driving beam and two rigid generating beams is presented. The ambient low frequency is up-converted to high resonant frequency by the periodic impact ... Keywords: Energy harvester, Frequency up-conversion, Low frequency

Lei Gu

2011-02-01T23:59:59.000Z

460

E-Print Network 3.0 - ag superlens suitable Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the transmission properties of an optical far-field superlens for imaging beyond... December 2, 2005 (Doc. ID 63657) A conventional optical superlens for imaging beyond the...

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

"Transforming Ethnographic Data and Analytical Problems into Network Data Suitable for Complementary Analysis and Theory"  

E-Print Network [OSTI]

Anthropology 27 June 2005 FTP/Colleagues/Heady-Halle Abstract. The paper is designed to serve as a guide for integrating network analysis into major research institutes in social anthropology and related fields Although written from a broadly integrative anthropological sciences perspective, the eightfold organization

White, Douglas R.

462

Toward Improved Identifiability of Soil Hydraulic Parameters: On the Selection of a Suitable Parametric Model  

E-Print Network [OSTI]

Parametric Model Jasper A. Vrugt,* Willem Bouten, Hoshin V. Gupta, and Jan W. Hopmans ABSTRACT Richards

Vrugt, Jasper A.

463

Characterization of enzymes suitable as endpoint temperature indicators in turkey muscle  

E-Print Network [OSTI]

'Advisciry Committee: Dr. , (immy T. Keeton Tv, enty ? six et&clog?nc&us enzym?s iii unhc;itcd, saline extr;ters from Pectr&raiis major and Sartariris rurl ey miisclcs rir 24 - 72 hr postusorrem were evaluated using standard analytical mcthods (B?rgl11?y?r, 1974...). Eighteen enzymes v;ith activity of 100 ? 1000 U/Kg inuscl?. (higlil or 10 ? 1(KI U/K? riiuscle (medium) activity level, were tested to detcrmin? los c&r';rcrrvrr) betw?cn 6S" and 75'C. Six enzyme activities, LDH, MDH, C&O'I'. Gl'I'. TI'I;&riel ICDI I, v...

Hsu, Yih-Chih

2012-06-07T23:59:59.000Z

464

Suitability of artificial neural networks for designing LoC circuits  

Science Journals Connector (OSTI)

The simulation of complex LoC (Lab-on-a-Chip) devices is a process that requires solving computationally expensive partial differential equations. An interesting alternative uses artificial neural networks for creating computationally feasible models ... Keywords: LoC, MOR, artificial neural networks, lab-on-a-chip, microfluidic devices, nanofluidic devices

David Moreno; Sandra Gůmez; Juan Castellanos

2011-06-01T23:59:59.000Z

465

Long-Term Trends in Summertime Habitat Suitability for Delta Smelt, Hypomesus transpacificus  

E-Print Network [OSTI]

Francisco Bay at the Golden Gate Bridge to the loca- tion ofFrancisco Bay under the Golden Gate Bridge, and freshwater

Nobriga, Matthew L.; Sommer, Ted R.; Feyrer, Frederick; Fleming, Kevin

2008-01-01T23:59:59.000Z

466

A reduced-form statistical climate model suitable for coupling with economic emissions projections  

E-Print Network [OSTI]

In this work, we use models based on past data and scientific analysis to determine possible future states of the environment. We attempt to improve the equations for temperature and greenhouse gas concentration used in ...

Rabin, Gregory S

2007-01-01T23:59:59.000Z

467

Design and Development of New Algorithm for Web Content Mining Suitable for Mobile Systems.  

E-Print Network [OSTI]

??The thesis develops new algorithm and technique to extract the secure and fast educational content for kids according to their age and redirect the interestÖ (more)

Gupta, Neha

2015-01-01T23:59:59.000Z

468

Environmental siting suitability analysis for commercial scale ocean renewable energy| A southeast Florida case study.  

E-Print Network [OSTI]

?? This thesis aims to facilitate the siting and implementation of Florida Atlantic University Southeast National Marine Renewable Energy Center (FAU SNMREC) ocean current energyÖ (more)

Mulcan, Amanda

2015-01-01T23:59:59.000Z

469

Special Polynomial Families for Generating More Suitable Elliptic Curves for Pairing-Based Cryptosystems  

E-Print Network [OSTI]

Technological University Singapore dp@pmail.ntu.edu.sg cuishi@pmail.ntu.edu.sg ecwchan@ntu.edu.sg Abstract of effective polynomial families of pairing-friendly elliptic curves. For larger values of k, Brezing and Weng enough to make 4q ­ t2 small as to produce effective values of D. Barreto and Naehrig [17] generated non

470

Transparent and Conductive Carbon Nanotube Multilayer Thin Films Suitable as an Indium Tin Oxide Replacement  

E-Print Network [OSTI]

Transparent electrodes made from metal oxides suffer from poor flexibility and durability. Highly transparent and electrically conductive thin films based on carbon nanotubes (CNTs) were assembled as a potential indium tin oxide (ITO) replacement...

Park, Yong Tae

2012-07-16T23:59:59.000Z

471

Wireless sensor networks and service-oriented architecture, as suitable approaches to be applied into ITS  

Science Journals Connector (OSTI)

In this paper, Wireless Sensor Networks (WSN) and Service-Oriented Architecture (SOA) approaches are analyzed given that represent both emerging and key role for Intelligent Transportations Systems (ITS). However, It is worth noting that WSN and SOA ... Keywords: ITS, SOA, WSN, intelligent transportation systems, navigation, parking systems, service-oriented architecture, web services, wireless sensors networks

Luis Felipe Herrera-Quintero; Francisco MaciŠ-Pťrez; Diego Marcos-Jorquera; Virgilio Gilart-Iglesias

2012-05-01T23:59:59.000Z

472

The Hardness of Cottonseed Cake as Related to its Suitability for Feeding.  

E-Print Network [OSTI]

TEXAS AGRICULTURAL EXPERIMENT STA1'1ON A. B. CONNER, DIRECTOR COLLEGE STATION, BICAZOS COUNTY, TEXAS BULLETIN NO. 523 MARCH, 1936 DIVISION OF CHEMISTRY The Hardness of Cottonseed Cake as Related to its Suitabilit: for Feeding... Relation of hardness to consumption of cottonseed cake by sheep_- 23 classification of cottonseed cake with respect to hardness _----------_-_-__-- 25 Acknowledgment 2 7 Summary 27 BULLETIN NO. 523 MARCH, 1936 THE HARDNESS OF COTTONSEED CAKE AS RELATED...

Fraps, G. S. (George Stronach); Marrs, C. D. (Cecil Douglas)

1936-01-01T23:59:59.000Z

473

Is a Swine Model of Arteriovenous Malformation Suitable for Human Extracranial Arteriovenous Malformation? A Preliminary Study  

SciTech Connect (OSTI)

Objective: A chronic arteriovenous malformation (AVM) model using the swine retia mirabilia (RMB) was developed and compared with the human extracranial AVM (EAVM) both in hemodynamics and pathology, to see if this brain AVM model can be used as an EAVM model. Methods: We created an arteriovenous fistula between the common carotid artery and the external jugular vein in eight animals by using end-to-end anastomosis. All animals were sacrificed 1 month after surgery, and the bilateral retia were obtained at autopsy and performed hematoxylin and eosin staining and immunohistochemistry. Pre- and postsurgical hemodynamic evaluations also were conducted. Then, the blood flow and histological changes of the animal model were compared with human EAVM. Results: The angiography after operation showed that the blood flow, like human EAVM, flowed from the feeding artery, via the nidus, drained to the draining vein. Microscopic examination showed dilated lumina and disrupted internal elastic lamina in both RMB of model and nidus of human EAVM, but the thickness of vessel wall had significant difference. Immunohistochemical reactivity for smooth muscle actin, angiopoietin 1, and angiopoietin 2 were similar in chronic model nidus microvessels and human EAVM, whereas vascular endothelial growth factor was significant difference between human EAVM and RMB of model. Conclusions: The AVM model described here is similar to human EAVM in hemodynamics and immunohistochemical features, but there are still some differences in anatomy and pathogenetic mechanism. Further study is needed to evaluate the applicability and efficacy of this model.

Lv, Ming-ming, E-mail: lvmingming001@163.com [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Oral and Maxillofacial Surgery, Shanghai Key Laboratory of Stomatology (China)] [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Oral and Maxillofacial Surgery, Shanghai Key Laboratory of Stomatology (China); Fan, Xin-dong, E-mail: fanxindong@yahoo.com.cn [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Radiology (China)] [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Radiology (China); Su, Li-xin, E-mail: sulixin1975@126.com [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Oral and Maxillofacial Surgery, Shanghai Key Laboratory of Stomatology (China)] [Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Department of Oral and Maxillofacial Surgery, Shanghai Key Laboratory of Stomatology (China)

2013-10-15T23:59:59.000Z

474

Carbon dioxide adsorbents containing magnesium oxide suitable for use at high temperatures  

DOE Patents [OSTI]

Adsorption of carbon dioxide from gas streams at temperatures in the range of 300 to 500.degree. C. is carried out with a solid adsorbent containing magnesium oxide, preferably promoted with an alkali metal carbonate or bicarbonate so that the atomic ratio of alkali metal to magnesium is in the range of 0.006 to 2.60. Preferred adsorbents are made from the precipitate formed on addition of alkali metal and carbonate ions to an aqueous solution of a magnesium salt. Atomic ratios of alkali metal to magnesium can be adjusted by washing the precipitate with water. Low surface area adsorbents can be made by dehydration and CO.sub.2 removal of magnesium hydroxycarbonate, with or without alkali metal promotion. The process is especially valuable in pressure swing adsorption operations.

Mayorga, Steven Gerard (Allentown, PA); Weigel, Scott Jeffrey (Allentown, PA); Gaffney, Thomas Richard (Allentown, PA); Brzozowski, Jeffrey Richard (Macungie, PA)

2001-01-01T23:59:59.000Z

475

E-Print Network 3.0 - allocation suitability score Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A particularity of SbQA is that it allocates queries while considering both query load Source: Ecole Polytechnique, Centre de mathmatiques Collection: Mathematics 8...

476

The suitability of semi-continuous liquid chromatography for renal function replacement  

E-Print Network [OSTI]

hemodialysis-HD), has long been the accepted method for managing human metabolic waste levels for those with partial or complete kidney (renal) function loss. So well established is this modality, that it has become routine in hospitals and clinical set..., these results reveal Cl droppino slightly with bicarbonate- buffered HD and remaininc fairly constant wi. th acetate. Noradrena- line levels stayed. Dearly unchanged. Intercompartmental fluid ois? tribution was the factor studied by Schuenerann et -l. (1D...

Blackwell, Gregory Allen

2012-06-07T23:59:59.000Z

477

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings  

DOE Patents [OSTI]

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Farmer, Joseph C; Wong, Frank M.G.; Haslam, Jeffery J; Ji, Xiaoyan; Day, Sumner D; Blue, Craig A; Rivard, John D.K.; Aprigliano, Louis F; Kohler, Leslie K; Bayles, Robert; Lemieux, Edward J; Yang, Nancy; Perepezko, John H; Kaufman, Larry; Heuer, Arthur; Lavernia, Enrique J

2013-09-03T23:59:59.000Z

478

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings  

DOE Patents [OSTI]

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Farmer, Joseph C.; Wong, Frank M. G.; Haslam, Jeffery J.; Ji, Xiaoyan (Jane); Day, Sumner D.; Blue, Craig A.; Rivard, John D. K.; Aprigliano, Louis F.; Kohler, Leslie K.; Bayles, Robert; Lemieux, Edward J.; Yang, Nancy; Perepezko, John H.; Kaufman, Larry; Heuer, Arthur; Lavernia, Enrique J.

2013-07-09T23:59:59.000Z

479

bandwidth, moderate gain, and good radiation patterns suitable for WLAN/WiMAX application.  

E-Print Network [OSTI]

for wireless applications, Microwave Opt Technol Lett 50 (2008), 2794­2797. 2. W.S. Chen and Y.H. YU. REFERENCES 1. W.C. Liu, J.L. Jaw, and B.C. Chen, Triple-band CPW-fed monop- ole antenna with branch strips

Park, Seong-Ook

480

MODELING SITE SUITABILITY FOR ESTABLISHING DEDICATED ENERGY CROPS IN NORTHERN KENTUCKY.  

E-Print Network [OSTI]

??Dedicated energy crops have the potential to supply a sustainable biomass feedstock to support the bioenergy industry. However, a major constraint for promoting energy cropsÖ (more)

Nepal, Sandhya

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "methyl esters suitable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Screening commercial surfactants suitable for remediating DNAPL source zones by solubilization  

SciTech Connect (OSTI)

Surfactants can enhance the removal of nonaqueous-phase-liquids (NAPLs) from porous media by two very different mechanisms: (1) increased solubilization that occurs in the presence of surfactant micelles and (2) mobilization of NAPL ganglia held by capillary forces. Solubilization technologies pose less risk of uncontrolled NAPL migration and are less complex to design. Since dense-NAPLs, like PCE, pose the greatest risk of migration, there is a need for more information on surfactants that are capable of solubilizing DNAPLs and removing them as water continuous, low viscosity, microemulsion without mobilization. Forty-two commercial, water-soluble surfactants were screened for PCE solubilization in batch experiments and one nonionic (Brij 97) and one anionic (SDS) surfactant were further evaluated in column experiments. Of the 42 surfactants that were screened, 12 nonionic surfactants with HLB values between 10.8 and 13.2 solubilized the most PCE. However, as PCE solubilization exceeded {approximately}40,000 mg/L, macroemulsion stability became a problem. Addition of IPA did not affect the amount of PCE solubilized but decreased macroemulsion stability, resulting in more rapid formation of Winsor Type 1 microemulsions. The most efficient surfactants were Brij 97 and Ritoleth 10, both being ethoxylated oleyl alcohol ethers, At 3 wt % IPA and surfactant, these surfactants solubilized >70,000 mg PCE/L. In column experiments, Brij 97/IPA removed >92% of the residual PCE in 11 pore volumes without mobilizing the PCE. An SDS/pentanol/IPA system removed 98% in {approximately}9.5 pore volumes, but about 30% of the PCE was mobilized. Removal of PCE was rate-limited with Brij 97/IPA, suggesting that flow interruption may be an effective remediation strategy.

Zhou, M.; Rhue, R.D.

2000-05-15T23:59:59.000Z

482

Project Profile: Deep Eutectic Salt Formulations Suitable as Advanced Heat Transfer Fluids  

Broader source: Energy.gov [DOE]

Halotechnics, under the Thermal Storage FOA, is conducting high-throughput, combinatorial research and development of salt formulations for use as highly efficient heat transfer fluids (HTFs).

483

Fiber-optic communication links suitable for on-board use in modern aircraft  

E-Print Network [OSTI]

electromagnetic interference, which can affect the operational performance of these RF systems installed in aircraft. In most cases, due to bundled RF cables, electromagnetic interference in aircraft may interfere to increased susceptibility to electromagnetic interference (EMI)[8-9]. Considering other alternatives

Atiquzzaman, Mohammed

484

Assessment of Rooftop Area in Austin Energy's Service Territory Suitable for PV Development  

Broader source: Energy.gov [DOE]

As part of the Solar America Cities program, Austin Energy proposed to perform an assessment of the rooftop area available for PV development within its service area. Austin Energy contracted with Clean Energy Associates (CEA) to perform the analysis. This report summarizes the project objectives, data sources and methodological approach employed, and results.

485

High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries  

DOE Patents [OSTI]

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1.times.10.sup.7 Pa and an ionic conductivity of at least 1.times.10.sup.-5 Scm.sup.-1. The electrolyte is made under dry conditions to achieve the noted characteristics. In another aspect, the electrolyte exhibits a conductivity drop when the temperature of electrolyte increases over a threshold temperature, thereby providing a shutoff mechanism for preventing thermal runaway in lithium battery cells.

Mullin, Scott; Panday, Ashoutosh; Balsara, Nitash Pervez; Singh, Mohit; Eitouni, Hany Basam; Gomez, Enrique Daniel

2014-04-22T23:59:59.000Z

486

Suitability of the 3D radiosonde temperature field for climate change  

E-Print Network [OSTI]

temperatures on standard levels anomalised relative to the 1971-90 mean. The versions used here are 2.1, which) retrievals as a reference, and 2.1s which has corrections applied in the stratosphere only. This provides us, Stratospheric Ozone GS Greenhouse gases, Sulphate aerosols GHG Greenhouse gases SOL Solar forcing (Hoyt

Feigon, Brooke

487

Ecotoxicological assessment of organic wastes spread on land: Towards a proposal of a suitable test battery  

Science Journals Connector (OSTI)

Abstract The land spreading of organic wastes in agriculture is a common practice in Europe, under the regulation of the Directive 86/278/EEC. One of the objectives of this Directive is to prevent harmful effects of organic wastes on soil, plants and animals. Despite this regulatory framework, there is still a lack of harmonized ecotoxicological test strategy to assess the environmental hazard of such wastes. The aim of this study was to provide a first step towards the a priori ecotoxicological assessment of organic wastes before their land use. For that purpose, nine different organic wastes were assessed using direct (i.e. terrestrial tests) and indirect (i.e. tests on water eluates) approaches, for a total of thirteen endpoints. Then, multivariate analyzes were used to discriminate the most relevant test strategy, among the application rates and bioassays used. From our results, a draft of test strategy was proposed, using terrestrial bioassays (i.e. earthworms and plants) and a concentration range between one and ten times the recommended application rates of organic wastes.

Pierre Huguier; Nicolas Manier; Laure Chabot; Pascale Bauda; Pascal Pandard

2015-01-01T23:59:59.000Z

488

Process for producing an aggregate suitable for inclusion into a radiation shielding product  

SciTech Connect (OSTI)

The present invention is directed to methods for converting depleted uranium hexafluoride to a stable depleted uranium silicide in a one-step reaction. Uranium silicide provides a stable aggregate material that can be added to concrete to increase the density of the concrete and, consequently, shield gamma radiation. As used herein, the term "uranium silicide" is defined as a compound generically having the formula U.sub.x Si.sub.y, wherein the x represents the molecules of uranium and the y represent the molecules of silicon. In accordance with the present invention, uranium hexafluoride is converted to a uranium silicide by contacting the uranium hexafluoride with a silicon-containing material at a temperature in a range between about 1450.degree. C. and about 1750.degree. C. The stable depleted uranium silicide is included as an aggregate in a radiation shielding product, such as a concrete product.

Lessing, Paul A. (Idaho Falls, ID); Kong, Peter C. (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

489

Suitability of Metallic Materials for Interconnects in Solid Oxide Fuel Cells  

Science Journals Connector (OSTI)

FeCr model alloys with variation of chromium content, reactive element addition and spinel forming elements were studied in respect to oxidation resistance at 800įC. Additionally, in-situ studies were carried ...

W. J. Quadakkers; J. Piron-AbellanÖ

2002-01-01T23:59:59.000Z

490

An output feedback for a chain of integrator suitable for the use of dynamic scaling  

E-Print Network [OSTI]

such that the associated Lyapunov function U satisfies (5), and also : U E (^X, E) D E + U ^X (^X, E) D ^X c2 U(^X, E

Boyer, Edmond

491

Weathering and aggregate suitabilityóA case history from the ďVictoriaĒ project, Sri Lanka  

Science Journals Connector (OSTI)

The Victoria Project under construction near Kandy in Sri Lanka, required 1.7 million tonnes of aggregate to be quarried in slightly weathered gneiss. This paper describes an investigation into the strength an...

C. Stevens

1984-06-01T23:59:59.000Z

492

Irrigation-suitability land classification of the Rechna Doab in Pakistan  

E-Print Network [OSTI]

AND GROUNDWATER SALINITY AND ALKALINITY . . . . . . . . . . . . . . . 25 Kinds of Salt Affected Soils Experience in the Study Area Use of Satellite Imagery Waterlogging, Salinity, and Crop Yield Crop Salt ? Tolerance Quality of Irrigation Water Water... of the Saturated Extract Relationship between Yield of Cotton and Soil Salinity Effect of Increasing Salinity in Irrigation Water upon Soil Saturation Extract EH'ect of Different Leaching Fraction (LF) Values on Soil Water Salinity Variance in Salt...

Rehman, Gauhar

2012-06-07T23:59:59.000Z

493

ON THE SUITABILITY OF LONGITUDINAL PROFILE MEASUREMENTS USING COHERENT SMITH-PURCELL RADIATION  

E-Print Network [OSTI]

Kittelmann, C. Thomas, ESS, Lund, Sweden Abstract The use of Smith-Purcell radiation to measure electrons power, it is mandatory to understand the beam dynamics and to determine the beam size and profile with precision. In high power proton Linacs, such under- standing would allow a full characterization of the beam

Boyer, Edmond

494

A digital induction wattmeter suitable for use with the A-C network calculator  

E-Print Network [OSTI]

sections of the disk and the pointer are sade of conducting materially and a potential is applied between the pointer and the code sections which are connected through relay coils. When the pointer i' at rest, it is pushed against the disk... and the relays that are cpnnected to the potential source through the code sections are energised. Those that close give a digital indication of the angular position of the pointer. The angular resolution of thi ~ device is two percent. Another device...

Larsen, Michael Joe

2012-06-07T23:59:59.000Z

495

Achieving clean epitaxial graphene surfaces suitable for device applications by improved lithographic process  

SciTech Connect (OSTI)

It is well-known that the performance of graphene electronic devices is often limited by extrinsic scattering related to resist residue from transfer, lithography, and other processes. Here, we report a polymer-assisted fabrication procedure that produces a clean graphene surface following device fabrication by a standard lithography process. The effectiveness of this improved lithography process is demonstrated by examining the temperature dependence of epitaxial graphene-metal contact resistance using the transfer length method for Ti/Au (10?nm/50?nm) metallization. The Landauer-Buttiker model was used to explain carrier transport at the graphene-metal interface as a function of temperature. At room temperature, a contact resistance of 140 ?-?m was obtained after a thermal anneal at 523?K for 2?hr under vacuum, which is comparable to state-of-the-art values.

Nath, A., E-mail: anath@gmu.edu; Rao, M. V. [George Mason University, 4400 University Dr., Fairfax, Virginia 22030 (United States); Koehler, A. D.; Jernigan, G. G.; Wheeler, V. D.; Hite, J. K.; HernŠndez, S. C.; Robinson, Z. R.; Myers-Ward, R. L.; Eddy, C. R.; Gaskill, D. K. [U.S. Naval Research Laboratory, 4555 Overlook Ave. SW, Washington, D.C. 20375 (United States); Garces, N. Y. [Sotera Defense Solutions, 2200 Defense Hwy. Suite 405, Crofton, Maryland 21114 (United States)

2014-06-02T23:59:59.000Z

496

An Approach to Select a Best Suitable Video Server Falko Dressler  

E-Print Network [OSTI]

on the availability and the achieved transmission quality are very high. Therefore, multiple video servers called client, is requested to choose one of these servers for the particular transmission. Several transmission. New approaches are in progress, which allow a more meaningful selection. For example

Breu, Ruth

497

Fluorescent protein pair emit intracellular FRET signal suitable for FACS screening  

SciTech Connect (OSTI)

The fluorescent proteins ECFP and HcRed were shown to give an easily resolved FRET-signal when expressed as a fusion inside mammalian cells. HeLa-tat cells expressing ECFP, pHcRed, or the fusion protein pHcRed-ECFP were analyzed by flow cytometry after excitation of ECFP. Cells expressing HcRed-ECFP, or ECFP and HcRed, were mixed and FACS-sorted for FRET positive cells: HcRed-ECFP cells were greatly enriched (72 times). Next, cloned human antibodies were fused with ECFP and expressed anchored to the ER membrane. Their cognate antigens (HIV-1 gp120 or gp41) were fused to HcRed and co-expressed in the ER. An increase of 13.5 {+-} 1.5% (mean {+-} SEM) and 8.0 {+-} 0.7% in ECFP fluorescence for the specific antibodies reacting with gp120 or gp41, respectively, was noted after photobleaching. A positive control (HcRed-ECFP) gave a 14.8 {+-} 2.6% increase. Surprisingly, the unspecific antibody (anti-TT) showed 12.1 {+-} 1.1% increase, possibly because overexpression in the limited ER compartment gave false FRET signals.

Johansson, Daniel X. [Karolinska Institutet, Department of Medicine, Karolinska Hospital, 171 76 Stockholm (Sweden); Brismar, Hjalmar [Karolinska Institutet, Department of Woman and Child Health, Karolinska Hospital, 171 76 Stockholm (Sweden); Royal Institute of Technology, Department of Cell Physics, KTH/SCFAB, 106 91 Stockholm (Sweden); Persson, Mats A.A. [Karolinska Institutet, Department of Medicine, Karolinska Hospital, 171 76 Stockholm (Sweden)]. E-mail: mats.persson@ki.se

2007-01-12T23:59:59.000Z

498

Power System Planning: Emerging Practices Suitable for Evaluating the Impact of High-Penetration Photovoltaics  

SciTech Connect (OSTI)

This report explores the impact of high-penetration renewable generation on electric power system planning methodologies and outlines how these methodologies are evolving to enable effective integration of variable-output renewable generation sources.

Bebic, J.

2008-02-01T23:59:59.000Z

499

Pitch Production Using Solvent Extraction of Coal: Suitability as Carbon Anode Precursor.  

E-Print Network [OSTI]

??Albertan coal has been used to produce extracts as precursor for production of anode coke. Coal extractability was studied using digestion with Tetralin in aÖ (more)

Mohammad Ali Pour, Mehdi

2009-01-01T23:59:59.000Z

500

Cryogenic, Conduction Cooled, End Pumped, Zigzag Slab Laser, Suitable For Power Scaling  

Science Journals Connector (OSTI)

Thermo mechanical and thermo optical properties of Yb:YAG improve significantly at cryogenic temperatures. We present the first end pumped, zigzag slab Yb:YAG geometry, which is...

Ganija, Miftar; Ottaway, David J; Veitch, Peter J; Munch, Jesper