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1

Chlorophyll and acid rain  

NLE Websites -- All DOE Office Websites (Extended Search)

Chlorophyll and acid rain Chlorophyll and acid rain Name: beachbum Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: A while ago I read an article that stated that after a plant received acid rain, there seemed to be less of chlorophyll a and b in the plant. I was wondering where does the chlorophyll go and what is the actual process (cell structure affected?). Replies: I think that less chlorophyll being present would be more likely a result of less being produced. Plant cell constantly turn over cell material, it will also constantly produce more. So if one compares a plant not exposed to acid rain (presumably producing a normal amount of chlorophyll and the exposed plant then one sees that the exposed plant has less chlorophyll than the unexposed plant. I do not think I can answer the rest of your question.

2

(Acid rain workshop)  

SciTech Connect

The traveler presented a paper entitled Susceptibility of Asian Ecosystems to Soil-Mediated Acid Rain Damage'' at the Second Workshop on Acid Rain in Asia. The workshop was organized by the Asian Institute of Technology (Bangkok, Thailand), Argonne National Laboratory (Argonne, Illinois), and Resource Management Associates (Madison, Wisconsin) and was sponsored by the US Department of Energy, the United Nations Environment Program, the United Nations Economic and Social Commission for Asia and the Pacific, and the World Bank. Papers presented on the first day discussed how the experience gained with acid rain in North America and Europe might be applied to the Asian situation. Papers describing energy use projections, sulfur emissions, and effects of acid rain in several Asian countries were presented on the second day. The remaining time was allotted to discussion, planning, and writing plans for a future research program.

Turner, R.S.

1990-12-05T23:59:59.000Z

3

Controlling acid rain  

E-Print Network (OSTI)

High concentrations of sulfuric and nitric acid in raTn fn the northeastern USA are caused by the large scale combustion of fossil fuels within this region. Average precipitation acidity is pH 4.2, but spatial and temporal ...

Fay, James A.

1983-01-01T23:59:59.000Z

4

Peer review plan muddies acid rain talks  

Science Journals Connector (OSTI)

Bilateral U.S./Canadian talks on an acid rain treaty are being buffeted by bitter winds of national politics and uncertain science. The latest ill wind to blow north, as far as the Canadians are concerned, is the U.S. plan to have peer reviewed all ...

1982-05-10T23:59:59.000Z

5

Fraud in the acid rain debate  

SciTech Connect

Electric utility executives, according to the author, and millions of other Americans are the victims of a gigantic fraud being carried on in the name of controlling acid rain. This fraud, states the author, involves the distorted, dire image of acidity in nature being created by environmental groups, politicians and others - to gain public sympathy for their legislative goals. The alleged fraud involves the very nature of the legislation being promoted as a low-cost cure for acid rain. On the basis of scientific evidence to date there is no assurance it will reduce acidity by any appreciable amount, but on the other hand it most certainly will cost users of electricity hundreds of billions of dollars in new costs. What has already happened to the nuclear industry is also meant for coal.

Bagge, C.

1984-06-01T23:59:59.000Z

6

E-Print Network 3.0 - acid rain effects Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of Mexican Mayan monuments. Ingenieria... eroding because of acid rain. Just as water dis- solves an Alka-Seltzer tablet, acid rain erodes... Autonomous University of...

7

E-Print Network 3.0 - artificial acid rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

the world. How does rain become ... Source: Jones, Clive G. - Cary Institute of Ecosystem Studies Collection: Environmental Sciences and Ecology 7 Effect of acid rain on...

8

E-Print Network 3.0 - acid rain information Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

389H)5 389 DIRECT FOLIAR EFFECTS OF SIMULATED ACID RAIN I. DAMAGE, GROWTH... acid rain (pH 5-6, 40, 30 and 2 0) were observed for seedlings of four deciduous tree species...

9

E-Print Network 3.0 - acid rain researchniva Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

389H)5 389 DIRECT FOLIAR EFFECTS OF SIMULATED ACID RAIN I. DAMAGE, GROWTH... acid rain (pH 5-6, 40, 30 and 2 0) were observed for seedlings of four deciduous tree species...

10

E-Print Network 3.0 - acid rain workshop Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

389H)5 389 DIRECT FOLIAR EFFECTS OF SIMULATED ACID RAIN I. DAMAGE, GROWTH... acid rain (pH 5-6, 40, 30 and 2 0) were observed for seedlings of four deciduous tree species...

11

E-Print Network 3.0 - acid rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

389H)5 389 DIRECT FOLIAR EFFECTS OF SIMULATED ACID RAIN I. DAMAGE, GROWTH... acid rain (pH 5-6, 40, 30 and 2 0) were observed for seedlings of four deciduous tree species...

12

E-Print Network 3.0 - acid rains status Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

389H)5 389 DIRECT FOLIAR EFFECTS OF SIMULATED ACID RAIN I. DAMAGE, GROWTH... acid rain (pH 5-6, 40, 30 and 2 0) were observed for seedlings of four deciduous tree species...

13

The urban perspectives of acid rain. Workshop summary  

SciTech Connect

This report documents discussions held during a workshop an Urban Perspective of Acid Rain. The workshop was sponsored by the Office of the Director, National Acid Precipitation Assessment Program (NAPAP). NAPAP anticipates giving increased emphasis to the benefits in urban areas of emissions reductions. The goal of this informal, exploratory workshop was to serve as a first step towards identifying pollutant monitoring, and research and assessment needs to help answer, from an urban perspective, the two key questions posed to NAPAP by Congress: (1) what are the costs, benefits, and effectiveness of the acid rain control program, and (2) what reductions in deposition, rates are needed in order to prevent adverse effects? The workshop addressed research activities needed to respond to these questions. The discussions focused. sequentially, on data needs, data and model availability, and data and modeling gaps. The discussions concentrated on four areas of effects: human health, materials, urban forests, and visibility.

Tonn, B.E.

1993-06-04T23:59:59.000Z

14

Energy technology and emissions control for acid rain abatement in Asia  

SciTech Connect

After more than ten years of research, acid rain is a sufficiently serious problem in North America to warrant control action. The acid rain problem has become a threat to the Asian continent as well. Emissions of sulfur dioxide and nitrogen oxides are already high and announces plans for increases in coal use by countries in the region imply a major increase in emissions in the future. This will inevitably lead to greater incidence of acid rain and probably significant environmental damage in some locations. The purpose of this paper is to examine some of the issues relating to acid-rain-control technology in Asia and to suggest ways to include technology options in integrated simulation models of acid rain in Asia. 14 refs., 9 figs., 6 tabs. (FL)

Streets, D.G.

1990-01-01T23:59:59.000Z

15

Global CO2 emissions trading: Early lessons from the U.S. acid rain program  

Science Journals Connector (OSTI)

The U.S. Environmental Protection Agency is implementing a program of SO2 emission allowance trading as part of the Acid Rain Program authorized by the Clean Air Act Amendments of 1990. Electric utilities may use...

Barry D. Solomon

1995-05-01T23:59:59.000Z

16

Integrated Title V/acid rain permits: Transitioning through initial permit issuance and reopenings  

SciTech Connect

Titles IV and V of the Clean Air Act Amendments of 1990 (Act or CAA) created two new stationary source permitting programs, one specific to acid rain (Title IV), and a second for operating permits in general (Title V). The Phase 2 portion of the acid rain program was designed to be implemented through the Title V operating permit program, thereby subjecting all Phase 2 acid rain sources to the requirements of Title V. Permits issued pursuant to Phase 2 of the acid rain program will be viewed as a self-contained portion of the Title V operating permit and will be governed by regulations promulgated under both Title IV and Title V. The requirements imposed by Title IV may not always be consistent with the broader operating permit program requirements of Title V, and when inconsistency occurs, the acid rain requirements will take precedence. This nonalignment will perhaps be most apparent during two stages of initial permitting: (1) the transition period following Title V program approval when permit application, issuance, and effective dates differ between the two programs, and (2) at the point when acid rain permits must be reopened to incorporate Phase 2 NO{sub x} requirements. This paper explores strategies for streamlining implementation of the two programs with particular focus on these two coordination issues.

Bloomfield, C. [Environmental Protection Agency, San Francisco, CA (United States)

1995-12-31T23:59:59.000Z

17

Acid rain program: CEMS submission instructions for monitoring plans, certification test notifications, and quarterly reports  

SciTech Connect

The Acid Rain Program regulations require all affected utility units to continuously measure, record and report SO2, NOx, volumetric flow data and CO2 emissions. All affected units also must continuously measure and record opacity, and must report opacity exceedances to the appropriate State or Local Agency. To ensure that your CEMS and fuel flowmeters are performing at an acceptable level, and providing quality assured data, you are required under 40 CFR 75.53, 75.62 (a) to submit a monitoring plan and certification test data for acid rain CEM certificaton. The purpose of this handbook is to help you fulfill your requirements under the Acid Rain Program. This handbook will walk you through the necessary steps for gaining CEMS certification, including filling out and mailing the proper forms, administering the required tests, and applying for certification and sending in electronic data to EPA.

NONE

1995-05-12T23:59:59.000Z

18

acid rain program: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

preservation A Rauramaa A Tommila J Ltd, Espoo Reseach Centre, PO Box 44, 02271 Espoo, Finland Formic acid is known to improve silage hygienic quality. Formic acid based...

19

Analysis of the strengths and weaknesses of acid rain electronic data reports  

SciTech Connect

Entergy Corporation is a Phase II utility with a fossil generation base composed primarily of natural gas and low sulfur coal. This paper presents an analysis of a large Phase II utility`s continuous emissions monitoring data reported to EPA under Title IV Acid Rain. Electric utilities currently report hourly emissions of NO{sub x}, SO{sub 2}, CO{sub 2}, fuel use, and generation through electronic data reports to EPA. This paper describes strengths and weaknesses of the data reported to EPA as determined through an analysis of 1995 data. Emissions reported by this company under acid rain for SO{sub 2} and NO{sub x} are very different from emissions reported to state agencies for annual emission inventory purposes in past years and will represent a significant break with historic trends. A comparison of emissions has been made of 1995 emissions reported under Electronic Data Reports to the emissions that would have been reported using emission factors and fuel data in past years. In addition, the paper examines the impacts of 40 CFR Part 75 Acid Rain requirements such as missing data substitution and monitor bias adjustments. Measurement system errors including stack flow measurement and false NO{sub x}Lb/MMBtu readings at very low loads are discussed. This paper describes the implications for public policy, compliance, emissions inventories, and business decisions of Part 75 acid rain monitoring and reporting requirements.

Schott, J. [Entergy Corp., Beaumont, TX (United States)

1997-12-31T23:59:59.000Z

20

Acid rain: commentary on controversial issues and observations on the role of fuel burning  

SciTech Connect

Even though much information has been accumulated on the subject of acid precipitation, lack of knowledge in certain technical areas precludes an adequate understanding of (1) how serious the acid precipitation problem really is and (2) what effect controlling sources of acid precipitation precursors would have in reducing acidification. It is nevertheless possible to draw some broad conclusions regarding the problem and to ascertain the direction that the required further work should take. This report presents the results of an investigation of various issues associated with acid rain. The following topics are addressed: occurrence of acid precipitation; effects of acid precipitation; sources of acid precipitation; transport, transformation, and deposition of acid pollutants; and fuel trend analysis. Recommendations for further research are included. (DMC)

Szabo, M.F.; Esposito, M.P.; Spaite, P.W.

1982-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

The Quality Assurance Manual and EPA`s acid rain data quality  

SciTech Connect

November 15, 1990 saw the passage of the Clean Air Act Amendments of 1990. Within this law was the requirements for all electric utility units greater than 25 megawatts of generated electrical capacity to monitor SO{sub 2}, NO{sub x}, CO{sub 2}, opacity, and volumetric flow of the stack gases. This paper summarizes the Acid Rain Program`s approach to Continuous Emissions Monitoring Systems (CEMS) Quality Control and Quality Assurance requirements and their use in the market based pollution control program of Title IV of the Clean Air Act Amendments of 1990. This paper attempts to present the perspective of the authors as to what is important for excellent monitoring system availability and ensuring accurate data acquisition. Emphasis is placed upon the Quality Assurance Manual required by the Acid Rain Regulations for affected unit`s to maintain and follow.

Bloomer, B.J. [EPA, Washington, DC (United States). Acid Rain Div.; Winkler, J.P. [EPA, Dallas, TX (United States)

1995-12-31T23:59:59.000Z

22

64Cu-1,4,7-Triazacyclononane-1,4-diacetic acid-para-aminobenzoic acid-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2  

E-Print Network (OSTI)

, 14). Prasanphanich et al. recently reported that the NOTA-based 64Cu-NOTA-8-Aoc-BBN(7­14) NH2 conjugate (where 8-Aoc = 8-aminooctanoic acid) exhibited decreased accumulation in hepatic tissue and maintain the good pharmacokinetic properties of the 64Cu-NOTA-8-Aoc-BBN(7­14)NH2 conjugate, Lane et al

Levin, Judith G.

23

Simplified turbulent spiral boundary layer and thermal wind simulator for acid rain modeling  

SciTech Connect

To determine the possible future impact of acid rain on the ecosystem requires the ability to numerically simulate the transport of various acids and their precursors from various sources to the locations of interest. Such a simulation is very complex and includes the evolution of the materials of interest as an aerosol within the ever changing local atmospheric motion. Wind patterns, however, are complex and difficult to model. They depend not only on local surface conditions and topology but on the global meteorological conditions. This paper presents an algebraic model to be used to simulate the vertical variation of the wind velocity and direction. The proposed model requires a minimum of input yet it qualitatively captures the mechanistic behavior of the wind with altitude. Results of the model are compared with both finite difference calculations and field data.

Lemmon, E.C.; Wiersma, G.B.; Bruns, D.A.

1986-04-01T23:59:59.000Z

24

Lots of data, how do we use it? Strengths and inaccuracies of utility acid rain electronic data reports  

SciTech Connect

Entergy Corporation is a Phase II utility with a fossil generation base composed primarily natural gas and low sulfur coal. This paper presents an analysis of a large Phase II utility`s continuous emissions monitoring data reported to EPA under Title IV Acid Rain. Electric utilities currently report hourly emissions of NOx, SO{sub 2}, CO{sub 2}, fuel use, and generation through electronic data reports to EPA. This paper describes strengths and weaknesses of the data reported to EPA as determined through an analysis of 1995 data. Emissions reported by this company tinder acid rain for SO{sub 2} and NOx are very different from emissions reported to state agencies for annual emission inventory purposes in past years and will represent a significant break with historic trends. A comparison of emissions has been made of 1995 emissions reported under Electronic Data Reports to the emissions that would have been reported using emission factors and fuel data in past years. In addition, the paper examines the impacts of 40 CFR Part 75 Acid Rain requirements such as missing data substitution and monitor bias adjustments. Measurement system errors including stack flow measurement and false NOx Lb/MMBtu readings at very low loads are discussed. This paper describes the implications for public policy, compliance, emissions inventories, and business decisions of Part 75 acid rain monitoring and reporting requirements.

Schott, J. [Entergy Corporation, Beaumont, TX (United States)

1996-12-31T23:59:59.000Z

25

Adequacy of low-sulfur coal supplies for meeting acid rain requirements  

SciTech Connect

As we have shown, acid rain legislation would create a large demand for low-sulfur bituminous coals. These coals are primarily found in Central Appalachia and in parts of the West, and would displace much of the highersulfur coal production now coming from the Midwest and Northern Appalachia. The magnitude of the related shifts in coal production are potentially huge. Previously, it has been assumed that these shifts in demands could be met by the industry. This paper has tried to highlight possible difficulties in actually meeting such demands. In the near-term, these difficulties concern the ability of the industry to develop mines and of the transportation industry to ship the coal. In the longer-term, questions can be raised regarding the amount, the quality, and the mineability of low-sulfur bituminous coal reserves. These potential difficulties in coal supply could affect attainment of the legislative goals. If not addressed and resolved in a timely fashion, the results could be a higher cost to meeting legislative goals and/or a longer time required to meet them.

Klein, D.E.

1983-06-01T23:59:59.000Z

26

Progress on Acidic Zirconia Mixed Oxides for Efficient NH3-SCR...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

levels 10 PSI laboratory test apparatus Computer FIC FIC FIC FIC FIC N 2 O 2 NO NH 3 TIC TIC TI MCT Detector TI TIC N 2 TI IR Source 2 3 4 3 3 3 5 6 7 8 9 10 heated gas line...

27

The role of the U.S. Clean Coal Technology Program in implementing the objectives of the joint Canada-U.S. acid rain mitigation initiative  

SciTech Connect

The Clean Coal Technology (CCT) Program was initiated by the US Department of Energy (DOE) in part as a response to the 1986 Joint Report of the US and Canadian Special Envoys on Acid Rain, with a particular focus on coal-burning electric power plants. The fist three solicitations of the CCT Program were aimed primarily at mitigating the potential impacts of acid rain. Subsequently, the Clean Air Act Amendments of 1990 established emission reduction targets for SO{sub 2} and No{sub x}, which influenced the goals of the last two CCT Program. This paper provides an overview of the CCT Program and reports the significant results, with emphasis on emissions reduction as well as their impact on ozone formation.

Baldwin, A.L.; Smith, D.N. [Dept. of Energy, Pittsburgh, PA (United States). Federal Energy Technology Center; Mann, A.W.; McIlvried, H.G.; Russell, D.L. Sr. [Burns and Roe Services Corp., Pittsburgh, PA (United States)

1997-12-31T23:59:59.000Z

28

64Cu-1,4,7-Triazacyclononane-1,4-diacetic acid-6-aminohexanoic acid-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2  

E-Print Network (OSTI)

. recently reported that the NOTA-based 64Cu-NOTA-8-Aoc-BBN(7­14) NH2 conjugate (where 8-Aoc = 8 pharmacokinetic properties of the 64Cu-NOTA-8-Aoc-BBN(7­14)NH2 conjugate, Lane et al. synthesized a new group of conjugates with the NOTA derivative NO2A and replaced the spacer 8-Aoc with an aliphatic or aromatic linking

Levin, Judith G.

29

64Cu-1,4,7-Triazacyclononane-1,4-diacetic acid-9-aminonanoic acid-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2  

E-Print Network (OSTI)

. recently reported that the NOTA-based 64Cu-NOTA-8-Aoc-BBN(7­14) NH2 conjugate (where 8-Aoc = 8 pharmacokinetic properties of the 64Cu-NOTA-8-Aoc-BBN(7­14)NH2 conjugate, Lane et al. synthesized a new group of conjugates with the NOTA derivative NO2A and replaced the spacer 8-Aoc with an aliphatic or aromatic linking

Levin, Judith G.

30

ARM - Instrument - rain  

NLE Websites -- All DOE Office Websites (Extended Search)

govInstrumentsrain govInstrumentsrain Documentation RAIN : Handbook RAIN : Instrument Mentor Monthly Summary (IMMS) reports RAIN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Rain Gauge (RAIN) Beneficiary of Recovery Act funding. Instrument Categories Surface Meteorology General Overview The tipping bucket rain gauge was located next to the disdrometer. It was replaced with a weighing bucket rain gauge in FY2010. Please contact the instrument mentor, if you have any questions. Output Datastreams rain : Rain gauge Primary Measurements The following measurements are those considered scientifically relevant. Precipitation Locations Eastern North Atlantic

31

Comparison of the efficiency of N2 and NH3 plasma treatments to improve the adhesion of PP films to in situ deposited Al coatings. Study of ageing phenomena in terms of acid-base properties  

Science Journals Connector (OSTI)

This paper reports on the characteristics of polypropylene (PP) treated at two different frequencies, 70 kHz and 13.56 MHz, in two plasma atmospheres, NH3 and N2 plasmas. Chemical modifications created on the plasma-treated material were investigated by different complementary surface analytical techniques (X-ray photoelectron spectroscopy (XPS) and contact angle measurements), which revealed a higher reactivity of the NH3 plasma. The incorporation of nitrogen plays an important role as revealed by the adhesion study of thermally evaporated aluminium with treated PP: the measured peel strengths were two times higher for NH3-treated surfaces than for N2-treated ones, with XPS measurements showing a sharper increase of N/C ratio as a function of treatment time for the former treatment. Ageing of the PP pretreated in NH3 was also studied in terms of surface acid-base properties. The work of adhesion, calculated from contact angle measurements, showed a distinct dependence on the pH value of the test liquids and good correlations were obtained with peel test results. The basic character of the NH3-treated PP disappears with ageing, leading to an amphoteric surface.

M. Tatoulian; F. Arefi-Khonsari; N. Shahidzadeh-Ahmadi; J. Amouroux

1995-01-01T23:59:59.000Z

32

A ACID RAIN Audrey Gibson  

E-Print Network (OSTI)

- SO2 Emissions of sulfur dioxide (SO2) and oxides of nitrogen (NOx) react in the atmosphere with water;Gas Natural Sources Concentration Carbon dioxide CO2 Decomposition 355 ppm Nitric oxide NO Electric discharge 0.01 ppm Sulfur dioxide SO2 Volcanic gases 0-0.01 ppm Table 1 Carbon dioxide, produced

Toohey, Darin W.

33

ARM - Datastreams - rain  

NLE Websites -- All DOE Office Websites (Extended Search)

Datastreamsrain Datastreamsrain Documentation Data Quality Plots Citation DOI: 10.5439/1025264 [ What is this? ] Generate Citation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : RAIN Rain gauge Active Dates 2006.03.01 - 2014.01.09 Measurement Categories Atmospheric State Originating Instrument Rain Gauge (RAIN) Measurements Only measurements considered scientifically relevant are shown below by default. Show all measurements Measurement Units Variable Altitude above mean sea level m alt Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time Record with error unitless error_latch ( time ) Frequency average, sensor 1 Hz frequency1 ( time ) Frequency average, sensor 2 Hz frequency2 ( time )

34

1H NMR investigation of the spin dynamics of the spin-frustrated trinuclear Fe cluster (NH4)[Fe3(?3-OH)(H2L)3(HL)3]?(H3L=orotic acid)  

Science Journals Connector (OSTI)

Proton nuclear-magnetic-resonance (NMR) measurements have been performed in the cluster (NH4)[Fe3(?3-OH)(H2L)3(HL)3]?(H3L=orotic acid) in order to investigate the electron spin dynamics of the Fe trinuclear unit. The proton NMR spectra and spin-lattice relaxation times T1 have been measured at temperatures between 3 K and room temperature. The 1/T1 rate exhibits a broad maximum around 50 K, which is attributed to slow local-field fluctuations of the electronic spin system of the order of the Larmor period, associated with magnetic excitations between the discrete low-lying energy levels of the cluster. The observation and relaxation analysis of the 1/T1 maximum provide an independent measurement of the energy difference between the ground and the first-excited state of the trinuclear unit and corroborates the results of previous static susceptibility measurements.

M. Fardis; G. Diamantopoulos; M. Karayianni; G. Papavassiliou; V. Tangoulis; A. Konsta

2001-11-30T23:59:59.000Z

35

Singin' in the Rain  

NLE Websites -- All DOE Office Websites (Extended Search)

Singin' in Singin' in the Rain News Featured Articles 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Headlines Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 11.25.13 Singin' in the Rain Ultra water-repellent material developed at Brookhaven Lab may lead to many warming applications. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Brookhaven Lab physicist Antonio Checco. Photo courtesy of Brookhaven National Laboratory When it comes to designing extremely water-repellent surfaces, shape and size matter. That's the finding of a group of scientists at the U.S. Department of Energy's Brookhaven National Laboratory, who investigated the

36

West Texas Rain  

E-Print Network (OSTI)

and Water Commission, Culberson County Underground Water District and county officials to install a 2,500-gallon rainwater harvesting tank at the Culberson County Courthouse. West Texas Rain Rainwater harvesting demonstration sites save water and money... (Above Left) One of the three rainwater harvesting demonstrations is located at the Culberson County Courthouse in Van Horn. This 2,500-gallon tank has been installed to catch and store the rainwater. (Above Right) Landscape irrigation using...

Supercinski, Danielle

2006-01-01T23:59:59.000Z

37

Optical Rain Gauge and Tipping Bucket Rain Gauge Comparisons  

NLE Websites -- All DOE Office Websites (Extended Search)

Rain Gauge and Tipping Bucket Rain Gauge Comparisons Rain Gauge and Tipping Bucket Rain Gauge Comparisons at the ARM Climate Research Facility TWP Sites Michael T. Ritsche 1 , Donna J. Holdridge 1 , Amanda Deieso 2 , Amy Kanta 2 , and Jenni Prell 2 1 Environmental Science Division, Argonne National Laboratory, Argonne, IL 2 Department of Geography, Northern Illinois University, DeKalb, IL 1. Introduction Measurement of rainfall and precipitation is a difficult task even in the best of circumstances. Different types of gauges are used depending on the type of precipitation expected (solid or liquid) and the rate at which it falls. The ARM Program uses two types of precipitation sensors in its surface meteorological systems: the optical rain gauge (ORG) and the tipping bucket rain gauge (TBRG). The ORG was originally

38

Rapid Ammonia Gas Transport Accounts for Futile Transmembrane Cycling under NH3/NH4  

E-Print Network (OSTI)

Rapid Ammonia Gas Transport Accounts for Futile Transmembrane Cycling under NH3/NH4 + Toxicity) seedlings is predominately of the gaseous NH3 species, rather than the NH4 + ion. Influx of 13 NH3/13 NH4 + , which exceeded 200 mmol g­1 h­1 , was not commensurate with membrane depolarization or increases in root

Britto, Dev T.

39

Category:Concord, NH | Open Energy Information  

Open Energy Info (EERE)

Go Back to PV Economics By Location Go Back to PV Economics By Location Media in category "Concord, NH" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Concord NH Public Service Co of NH.png SVFullServiceRestauran... 74 KB SVHospital Concord NH Public Service Co of NH.png SVHospital Concord NH ... 75 KB SVLargeHotel Concord NH Public Service Co of NH.png SVLargeHotel Concord N... 74 KB SVLargeOffice Concord NH Public Service Co of NH.png SVLargeOffice Concord ... 76 KB SVMediumOffice Concord NH Public Service Co of NH.png SVMediumOffice Concord... 74 KB SVMidriseApartment Concord NH Public Service Co of NH.png SVMidriseApartment Con... 71 KB SVOutPatient Concord NH Public Service Co of NH.png SVOutPatient Concord N... 72 KB SVPrimarySchool Concord NH Public Service Co of NH.png

40

Effects of Acid Rain on Freshwater Ecosystems  

Science Journals Connector (OSTI)

...and T. R. Carrick, FreshwaterBid. 3, 437 (1973). 56. R. J. Hall and F. P...Mulder, Soil Sci. Soc.Am.J. 49, 437 (1985) and D. K. Nordstrom and J...WI, 30 September to 3 October 1984. (Tappi Press, Atlanta, 1984), pp. 149-156...

D. W. SCHINDLER

1988-01-08T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Japan no help to rain forests  

Science Journals Connector (OSTI)

... TokyoJAPAN is severely criticized for its role in the destruction of the world's tropical rain ... .

David Swinbanks

1989-04-20T23:59:59.000Z

42

NEWTON: Why Does It Rain  

NLE Websites -- All DOE Office Websites (Extended Search)

Why Does It Rain? Why Does It Rain? Name: Drama Status: student Grade: K-3 Location: FL Country: USA Date: Fall 2011 Question: Why does it rain? Replies: Drama, When water is heated it evaporates into the air. You cannot see the water in the air, but sometimes you can feel it (especially when it is hot outside). Have you ever noticed that on some warm days it is really humid (sticky and sweaty) and other warm days it feels dry? You might have also noticed that in the morning, when the air is cool, you might find dew or mist on the leaves and grass. This occurs because cold air cannot hold much of moisture. There is a limit to the amount of water that air can hold. This limit is known as the saturation limit (or dew point). When the air is completely saturated and cannot hold any more water, then it comes down as rain (and leaves all that heat in the air).

43

Rain  

E-Print Network (OSTI)

fire, a woodchip flaring in his cupped palm as he passed. A fireman had come out after Brusher from the entrance of the fire temple across the way. The king summarily returned the enchanted wave of the man-boy, whose longish face became doubly...

Sparks, William Joseph

1992-01-01T23:59:59.000Z

44

WIND/RAIN BACKSCATTER MODELING AND WIND/RAIN RETRIEVAL FOR SCATTEROMETER AND  

E-Print Network (OSTI)

/rain backscatter model is developed that has inputs of surface rain rate, incidence angle, wind speed, wind from rain causes estimated wind speeds to be biased high and estimated wind directions to be biased directions are used as the wind direction estimate and the wind speed is derived from SAR by inversion

Long, David G.

45

SAR Imagery: Rain Forests, South America  

NLE Websites -- All DOE Office Websites (Extended Search)

Images of Rain Forests in South America Images of Rain Forests in South America The ORNL DAAC now offers a CD-ROM volume containing Synthetic Aperture Radar (SAR) imagery of the rain forest region of South America, including the Amazon Basin. The images were collected during 1995-1996 as part of an international project led by the National Space Development Agency of Japan (NASDA) to map the world's rain forest regions to high resolution by means of SAR. The 4-disc volume--entitled "JERS-1 SAR Global Rain Forest Mapping Project: Vol. AM-1, South America"--is made available under the auspices of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These CDs can be ordered through the ORNL DAAC at http://daac.ornl.gov/prepaks.shtml (look for the "LBA" listings).

46

Company Name: JobsInNH.com  

E-Print Network (OSTI)

Company Name: JobsInNH.com Web Site: www.jobsinnh.com Industry: Advertising & Marketing Brief Company Overview: "Since 2002, JobsInNH.com has been New Hampshire?s #1 employment resource. As recruiting and accelerate your job search. Connect with the best employers in the state who are hiring now" Majors

New Hampshire, University of

47

acid  

Office of Legacy Management (LM)

Acid/Pueblo Canyon, New Mexico, Site is Acid/Pueblo Canyon, New Mexico, Site is located near the town of Los Alamos, New Mexico, approximately 25 miles northwest of Santa Fe and 60 miles north-northeast of Albuquerque. The site is accessible from Canyon Road, which runs just south of the former waste treatment plant. The plant was situated on a mesa that forms the south rim of Acid Canyon. Acid Canyon is a small tributary near the head

48

acid  

NLE Websites -- All DOE Office Websites (Extended Search)

Acid/Pueblo Canyon, New Mexico, Site. Acid/Pueblo Canyon, New Mexico, Site. This site is managed by the U.S. Department of Energy Office of Legacy Management. Site Description and History The Acid/Pueblo Canyon, New Mexico, Site is located near the town of Los Alamos, New Mexico, approximately 25 miles northwest of Santa Fe and 60 miles north-northeast of Albuquerque. The site is accessible from Canyon Road, which runs just south

49

DOE - Office of Legacy Management -- R Brew Co - NH 01  

NLE Websites -- All DOE Office Websites (Extended Search)

R Brew Co - NH 01 R Brew Co - NH 01 FUSRAP Considered Sites Site: R. BREW CO. (NH.01 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Concord , New Hampshire NH.01-1 Evaluation Year: 1994 NH.01-2 Site Operations: Conducted vacuum furnace tests using uranium and copper billets. NH.01-1 NH.01-3 Site Disposition: Eliminated - Potential for contamination remote NH.01-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium NH.01-1 NH.01-3 Radiological Survey(s): Yes - radiological monitoring during operations NH.01-3 Site Status: Eliminated from consideration under FUSRAP Also see Documents Related to R. BREW CO. NH.01-1 - Memorandum/Checklist; Landis to File; Subject: R. Brew

50

Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team,  

E-Print Network (OSTI)

Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team, UNH Cooperative Extension The explosion of apple blossoms in May transforms the most gnarled old tree into a delicate cloud of beauty (1817-1862) in his essay "The Wild Apple Tree," described the blossoms perfectly: `The flowers

New Hampshire, University of

51

Disdrometer and Tipping Bucket Rain Gauge Handbook  

SciTech Connect

The Distromet disdrometer model RD-80 and NovaLynx tipping bucket rain gauge model 260-2500E-12 are two devices deployed a few meters apart to measure the character and amount of liquid precipitation. The main purpose of the disdrometer is to measure drop size distribution, which it does over 20 size classes from 0.3 mm to 5.4 mm. The data from both instruments can be used to determine rain rate. The disdrometer results can also be used to infer several properties including drop number density, radar reflectivity, liquid water content, and energy flux. Two coefficients, N0 and ?, from an exponential fit between drop diameter and drop number density, are routinely calculated. Data are collected once a minute. The instruments make completely different kinds of measurements. Rain that falls on the disdrometer sensor moves a plunger on a vertical axis. The disdrometer transforms the plunger motion into electrical impulses whose strength is proportional to drop diameter. The rain gauge is the conventional tipping bucket type. Each tip collects an amount equivalent to 0.01 in. of water, and each tip is counted by a data acquisition system anchored by a Campbell CR1000 data logger.

Bartholomew. MJ

2009-12-01T23:59:59.000Z

52

CONDENSATION OF CHONDRULES: CONDITIONS FOR "FIERY RAIN".  

E-Print Network (OSTI)

CONDENSATION OF CHONDRULES: CONDITIONS FOR "FIERY RAIN". L. Grossman1,2 and A. V. Fedkin1 . 1 Dept little Na condenses above the solidus, and Na2O contents of most chondrules plot above Na2O was condensed at near-liquidus temperatures. In the context of melting chondrule precursors, we showed that Na

Grossman, Lawrence

53

Wind/Rain Backscatter Modeling and Wind/Rain Retrieval for Scatterometer and Synthetic Aperture Radar.  

E-Print Network (OSTI)

??Using co-located space-borne satellite (TRMM PR, ESCAT on ERS 1/2) measurements, and numerical predicted wind fields (ECMWF), the sensitivity of C-band backscatter measurement to rain (more)

Nie, Congling

2008-01-01T23:59:59.000Z

54

Determination of the ( Ammonium (NH4  

E-Print Network (OSTI)

, paleoclimate history, biologic cycling of nutrients, ground-water contamination, and natural remediation contributed to understanding of water-supply sustainability, ground-water/surface-water interactionsDetermination of the ( 15 N/ 14 N) of Ammonium (NH4 + ) in Water: RSIL Lab Code 2898 Chapter 15

55

Multi-Index Rain Detection: A New Approach for Regional Rain Area Detection from Remotely Sensed Data  

Science Journals Connector (OSTI)

In this article, a new approach called Multi-Index Rain Detection (MIRD) is suggested for regional rain area detection and was tested for India using Kalpana-1 satellite data. The approach was developed based on the following hypothesis: better ...

Shruti Upadhyaya; R. Ramsankaran

2014-12-01T23:59:59.000Z

56

Pillared smectite modified with carbon and manganese as catalyst for SCR of NOx with NH3. Part I. General characterization and catalyst screening  

Science Journals Connector (OSTI)

Carbon- and manganese-modified zirconia-pillared smectites were prepared, characterized (XRD, BET and pore analysis, XPS) and tested in selective catalytic reduction of NOx with NH3. Both untreated and acidic pre...

Lucjan Chmielarz; Roman Dziembaj; Teresa Grzybek; Jerzy Klinik

57

NH House Committee_April27 2005  

NLE Websites -- All DOE Office Websites (Extended Search)

Mercury Control Mercury Control Technology R&D Program for Coal-Fired Boilers Working Session of the New Hampshire House Science, Technology, & Energy Committee April 26, 2005 Concord, New Hampshire Thomas J. Feeley, III thomas.feeley@netl.doe.gov National Energy Technology Laboratory NH House Committee_April 2005 Mercury Control Technology Field Testing Program Performance/Cost Objectives * Have technologies ready for commercial demonstration by 2007 for all coals * Reduce "uncontrolled" Hg emissions by 50-70% * Reduce cost by 25-50% compared to baseline cost estimates Baseline Costs: $50,000 - $70,000 / lb Hg Removed 2000 Year Cost NH House Committee_April 2005 Stages of Mercury Control Technology Development DOE RD&D Model Lab/Bench/Pilot-Scale Testing Field Testing

58

The effect of rain on freeway capacity  

E-Print Network (OSTI)

. The procedure used was basically a process of selection and processing of data from historical records. The facility used as a source of traific information was t' he Gulf Freeway in Houston, Texas, and rs. infall records were obtained from the Weather... to separate acceptable data, and the accepted capacity figures were related to the weather condition of wet or dry which prevs. iled on the relevant occs. sion. The results showed that rain does have a significant effect on freevray capacity which is very...

Jones, Edward Roy

2012-06-07T23:59:59.000Z

59

Cloud Computing: Rain-Clouds System  

E-Print Network (OSTI)

Abstract Cloud Computing is the on demand service can be provided to the users at any time. It delivers the software, data access, computing as a service rather than the product. The Cloud application simplifies the computing technology by providing pay-per-use customer relationship. It is the theory that familiar to cheaper devices with low processing power, lower storage capacities, great flexibility and many more things. The security of cloud computing is a major factor as users store sensitive and confidential information with cloud storage providers. The range of these providers may be un trusted and harmful. The purpose of adopting cloud computing in an organization is to decide between a public cloud ? and private cloud ? by means of privacy. Public clouds often known as provider clouds are administrated by third parties and services are offered on pay-per-use basis. Private clouds or internal clouds are owned by the single firm but it has some metrics such as lacking of availability of services (such as memory, server) and network resources which leads it to down. Due to this, technology moves toward the concept of Multi clouds or Rain Clouds. This paper displays the use of multi-clouds or rain clouds due to its ability to handle the huge amount of data traffic that affect the cloud computing user.

Harinder Kaur

60

Ab initio molecular dynamics investigations on the SN2 reactions of OH? with NH2F and \\{NH2Cl\\}  

Science Journals Connector (OSTI)

The bimolecular nucleophilic substitution (SN2) reactions of hydroxide anion (OH?) with fluoroamine (NH2F) and chloramine (NH2Cl) have been investigated with ab initio molecular dynamics simulations. For the SN2 reaction of OH? with NH2F, there are two main dynamic reaction pathways after passing the [HONH2F]? barrier. The first one is that the [HONH2F]? transition state directly dissociates to the products of F? and NH2OH without involving any dynamic intermediate complex, and on the contrary, the other one involves the dynamic hydrogen bond F?H?NH?OH and/or F?H?O?NH2 intermediate complexes. As to the SN2 reaction of OH? with NH2Cl, there is only one dominant dynamic reaction pathway, which leads to the products of Cl? and NH2OH directly. According to our calculations, the statistical theories including the RiceRamspergerKasselMarcus (RRKM) theory and transition state (TS) theory cannot be utilized to model the reaction kinetics for these two SN2 reactions.

Feng Yu; Lei Song; Xiaoguo Zhou

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

The Effect of Rain on ERS Scatterometer Measurements  

E-Print Network (OSTI)

on the sea surface also generate turbulence in the upper water layer which attenuates the capillary wave transparent to C-band scatterometer sig- nals due to the fact that atmospheric attenuation and backscat- ter measurements in rainy conditions [1] [2]. In a raining area, rain striking the water surface creates splash

Long, David G.

62

Comparing TRMM rainfall retrieval with NOAA buoy rain gauge data  

E-Print Network (OSTI)

to December of 2001. TRMM's 3G68 product provides instantaneous rain rate data averaged over 0.5? x 0.5? latitude-longitude grid boxes for the TRMM Microwave Imager (TMI), Precipitation Radar (PR), and a combined algorithm (COMB). The buoy's rain rate data...

Phillips, Amy Blackmore

2002-01-01T23:59:59.000Z

63

Rain increases the energy cost of bat flight  

Science Journals Connector (OSTI)

...properly cited. Rain increases the energy cost of bat flight Christian C. Voigt...moistening of their body inflicts energy costs on flight by reducing lift and...test the idea that rain imposes energy costs on flying bats. We quantified...

2011-01-01T23:59:59.000Z

64

An anticipatory integrated assessment of regional acidification: The RAINS-Asia model  

SciTech Connect

Across large parts of Asia, air pollution problems are becoming more and more evident. Rainfall in some areas, including China, Japan, and Thailand, has been measured to be 10 times more acidic than unpolluted rain. Increasing evidence of acidification damage to ecosystems such as surface waters, soils, and economically important crops, is beginning to appear. In addition, urban air quality in many areas of the region continues to decrease. Current economic forecasts predict continued rapid economic growth in the region, which will bring with it increasing emissions of air pollutants, especially sulfur. The total primary energy demand in Asia currently doubles every twelve years (as compared to a world average of every 28 years). Coal is expected to continue to be the dominant energy source, with coal demand projected to increase by 65 percent per year, a rate that outpaces regional economic growth. If current trends in economic development and energy use in Asia continue, emissions of sulfur dioxide, one of the key components in acid rain, will more than triple within the next 30 years. Many ecosystems will be unable to continue to absorb these increased levels of pollution without harmful effects, thus creating a potential danger for irreversible environmental damage in many areas. In view of the potential environmental consequences of projected growth in Asian energy consumption, emissions, and air pollution, the World Bank, together with the Asian Development Bank, have funded a project to develop and implement an integrated assessment model for the acid deposition phenomenon in Asia. The Regional Air Pollution INformation and Simulation model for Asia (RAINS-Asia) is a software tool to help decision makers assess and project future trends in emissions, transport, and deposition of air pollutants, and their potential environmental effects.

Amann, M. [International Institute for Applied Systems Analysis, Laxenburg (Austria); Carmichael, G.R. [Univ. of Iowa, Iowa City, IA (United States); Foell, W. [Resource Management Associates, Madison, WI (United States)] [and others

1996-12-31T23:59:59.000Z

65

NH4-smectite: Characterization, hydration properties and hydro mechanical behaviour  

E-Print Network (OSTI)

NH4-smectite: Characterization, hydration properties and hydro mechanical behaviour M. Gautier a and drive to environmental problems. The purpose of this study was to understand the hydro- physical changes the pressure on small amounts of samples, proved the strong increase of the permeability of NH4-smectite

Paris-Sud XI, Université de

66

NH Clean Power Act (New Hampshire) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NH Clean Power Act (New Hampshire) NH Clean Power Act (New Hampshire) NH Clean Power Act (New Hampshire) < Back Eligibility Agricultural Commercial Industrial Investor-Owned Utility Municipal/Public Utility Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State New Hampshire Program Type Environmental Regulations Provider NH Department of Environmental Services The Act calls for annual reductions of multiple pollutants, including SO2, Nox, CO2, and mercury. The Act calls for an 87% reduction in SO2 emissions and a 70% reduction in Nox emissions from 1999 levels. CO2 emissions are to be reduced to 1990 levels by the end of 2006. Act is implemented under NH Rules Env-A 2900. This act applies specifically to three existing fossil

67

Solar Decathlon: Rain and Shine | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine October 20, 2009 - 7:00am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. For all the bad weather, however, the mood in DC was very upbeat. This was the fourth Solar Decathlon, an event that has seen great strides since its launch in 2002. The mission of the event is to promote solar energy and energy efficiency in buildings, through innovative engineering and scholarly dedication. I would venture to say that this year might mark the event's greatest success, with TWO teams from Canada, as well as returning

68

Solar Decathlon: Rain and Shine | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine October 20, 2009 - 7:00am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. For all the bad weather, however, the mood in DC was very upbeat. This was the fourth Solar Decathlon, an event that has seen great strides since its launch in 2002. The mission of the event is to promote solar energy and energy efficiency in buildings, through innovative engineering and scholarly dedication. I would venture to say that this year might mark the event's greatest success, with TWO teams from Canada, as well as returning

69

ARM - Field Campaign - Rain Microphysics Study with Disdrometer and  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsRain Microphysics Study with Disdrometer and Polarization govCampaignsRain Microphysics Study with Disdrometer and Polarization Radar Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Rain Microphysics Study with Disdrometer and Polarization Radar 2005.04.28 - 2005.06.30 Lead Scientist : Guifu Zhang For data sets, see below. Description Understanding rain microphysics is important for accurate rainfall rate estimation and for improving parameterization in numerical weather prediction (NWP). The NCAR video disdrometer was installed at the ARM site at the Kessler farm. The disdrometer was also put side-by-side with the NSSL disdrometer for comparison/calibration and to study sampling effects. The disdrometer observations were used to verify KOUN polarimeteric radar

70

Two Modes of Change of the Distribution of Rain  

Science Journals Connector (OSTI)

The frequency and intensity of rainfall determine its character and may change with climate. A methodology for characterizing the frequency and amount of rainfall as functions of the rain rate is developed. Two modes of response are defined, one ...

Angeline G. Pendergrass; Dennis L. Hartmann

2014-11-01T23:59:59.000Z

71

E-Print Network 3.0 - acid ammonium phosphate Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Corrosive - base NH4OAc Ammonium acetate Irritant PBS Phosphate buffered saline PEG Polyethylene... Calcium chloride Irritant CAPS 3-(Cyclohexylamino)-1-propanesulfonic acid...

72

Elementary steps of the catalytic NO{sub x} reduction with NH{sub 3}: Cluster studies on reaction paths and energetics at vanadium oxide substrate  

SciTech Connect

We consider different reaction scenarios of the selective catalytic reduction (SCR) of NO in the presence of ammonia at perfect as well as reduced vanadium oxide surfaces modeled by V{sub 2}O{sub 5}(010) without and with oxygen vacancies. Geometric and energetic details as well as reaction paths are evaluated using extended cluster models together with density-functional theory. Based on earlier work of adsorption, diffusion, and reaction of the different surface species participating in the SCR we confirm that at Brnsted acid sites (i.e., OH groups) of the perfect oxide surface nitrosamide, NH{sub 2}NO, forms a stable intermediate. Here adsorption of NH{sub 3} results in NH{sub 4} surface species which reacts with gas phase NO to produce the intermediate. Nitrosamide is also found as intermediate of the SCR near Lewis acid sites of the reduced oxide surface (i.e., near oxygen vacancies). However, here the adsorbed NH{sub 3} species is dehydrogenated to surface NH{sub 2} before it reacts with gas phase NO to produce the intermediate. The calculations suggest that reaction barriers for the SCR are overall higher near Brnsted acid sites of the perfect surface compared with Lewis acid sites of the reduced surface, examined for the first time in this work. The theoretical results are consistent with experimental findings and confirm the importance of surface reduction for the SCR process.

Gruber, M.; Hermann, K. [Inorganic Chemistry Department, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany)] [Inorganic Chemistry Department, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany)

2013-12-28T23:59:59.000Z

73

EPR and IR studies of [Ru(NH?)?]+-Y and [Ru(NH?)?N?]+-Y type zeolites  

E-Print Network (OSTI)

EPR AND IR STUDIES OF [Ru(NH ) ] -Y 3 6 AND [Ru(NE ) N ] -Y TYPE ZEOLITES 2+ A Thesis by RAYMOND LEON LEUBNER Submitted to the Graduate College of Texas A&M University in partia1 fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1973 Major Subject: Chemistry EPR AND IR STUDIES OF [Ru(NH3) ] -Y 3+ AND [Ru(NH3) N ) -Y TYPE ZEOLITES 2+ 3&2 A Thesis by RAYMOND LEON LEUBNER Approved as to style and content by: (Chairman of Committ (Head of Department) (Memb...

Leubner, Raymond Leon

2012-06-07T23:59:59.000Z

74

Measurement and Modeling of Spatial NH3 Storage Distributions...  

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

in a Commercial Small Port Cu Zeolite Urea SCR Catalyst Measurement and Modeling of Spatial NH3 Storage Distributions in a Commercial Small Port Cu Zeolite Urea SCR Catalyst...

75

Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics...  

NLE Websites -- All DOE Office Websites (Extended Search)

Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics in orthorhombic ammonia borane. Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics in...

76

Vibrational spectroscopy of the ammoniated ammonium ions NH sub 4 sup + (NH sub 3 ) sub n (n = 1-10)  

SciTech Connect

The gas-phase vibration-internal rotation spectra of mass-selected ammoniated ammonium ions, NH{sub 4}{sup +}(NH{sub 3}){sub n} (for n = 1-10), have been observed from 2600 to 4000 cm{sup {minus}1}. The spectra show vibrational features that have been assigned to modes involving both the ion core species, NH{sub 4}{sup +}, and the first shell NH{sub 3} solvent molecules. Nearly free internal rotation of the solvent molecules about their local C{sub 3} axes in the first solvation shell has been observed in the smaller clusters (n = 1-6). For the larger clusters studied (n = 7-10) the spectra converge, with little difference between clusters differing by one solvent molecule. For these clusters, the spectrum in the 3200-3500 cm{sup {minus}1} region is quite similar to that of liquid ammonia, and the entire region of 2600-3500 cm{sup {minus}1} also bears considerable resemblance to the spectra of ammonium salts dissolved in liquid ammonia under some chemical conditions. This indicates the onset of a liquidlike environment for the ion core and first shell solvent molecules in clusters as small as NH{sub 4}{sup +}(NH{sub 3}){sub 8}.

Price, J.M.; Crofton, M.W.; Lee, Y.T. (Lawrence Berkeley Lab., CA (United States) Univ. of California, Berkeley (United States))

1991-03-21T23:59:59.000Z

77

Public Service Co of NH | Open Energy Information  

Open Energy Info (EERE)

NH NH (Redirected from PSNH) Jump to: navigation, search Name Public Service Co of NH Place New Hampshire Service Territory New Hampshire Website www.psnh.com Green Button Landing Page www.psnh.com/SaveEnergyMo Green Button Reference Page www.psnh.com/SaveEnergyMo Green Button Implemented Yes Utility Id 15472 Utility Location Yes Ownership I NERC Location NPCC NERC NPCC Yes ISO NE Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Activity Retail Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections

78

Effects of Rain Attenuation on Satellite Video Transmission  

E-Print Network (OSTI)

. The effectiveness of site diversity as a mitigation technique is also studied. II. WEATHER EFFECTS Satellite path is the major weather effect of concern for satellite communications operating at frequencies aboveEffects of Rain Attenuation on Satellite Video Transmission Yee Hui Lee and Stefan Winkler Nanyang

Winkler, Stefan

79

E-Print Network 3.0 - acid silicates Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: domes - block and ash flows fumaroles groundwater crack conduit magma reservoir gas plume acid rain prevailing... 12;4 Lava Dome Lava Dome 12;5 fumaroles groundwater...

80

PORTSMOUTH HARBOR AND PISCATAQUA RIVER, NH & ME NAVIGATION IMPROVEMENT PROJECT  

E-Print Network (OSTI)

the states of New Hampshire and Maine. The existing project consists of 35-foot deep entrance channel, with a minimum width of 400 feet, extending about 6.2 miles from deep water at the harbor entrance upriverPORTSMOUTH HARBOR AND PISCATAQUA RIVER, NH & ME NAVIGATION IMPROVEMENT PROJECT 21 August 2014

US Army Corps of Engineers

Note: This page contains sample records for the topic "nh acid rain" 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

Characteristics of V2O5/Ti-PILC catalyst for the reduction of NO by NH3  

Science Journals Connector (OSTI)

Titania-pillared clay (Ti-PILC) as a catalyst support exhibited peculiar physicochemical characteristics compared to that of titania for the reduction of NO by NH3. The morphological variation of Ti-PILC was examined with respect to the preparation method. For the freeze-dried Ti-PILC, the development of needle-like crystallites, which may reveal the formation of a house-of-cards structure by delamination of Ti-PILC, has been observed. Ti-PILC catalyst contains high surface acidity examined by NH3 TPD. Without the impregnation of WO3 and MoO3 on V2O5/Ti-PILC catalyst as a promoter, the catalyst exhibits competitive NO removal performance to a commercial V2O5-WO3/TiO2 catalyst. In addition, Ti-PILC catalyst also exhibits the strong sulfur tolerance mainly attributed to the unique pore structure of the catalyst.

Ho Jeong Chae; In-Sik Nam; Young Gul Kim; Hee Sung Yang; Hyun Chul Choi{rk; Seok Lyong Song{rk

1999-01-01T23:59:59.000Z

82

Public Service Co of NH | Open Energy Information  

Open Energy Info (EERE)

Name Public Service Co of NH Name Public Service Co of NH Place New Hampshire Service Territory New Hampshire Website www.psnh.com Green Button Landing Page www.psnh.com/SaveEnergyMo Green Button Reference Page www.psnh.com/SaveEnergyMo Green Button Implemented Yes Utility Id 15472 Utility Location Yes Ownership I NERC Location NPCC NERC NPCC Yes ISO NE Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Activity Retail Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now!

83

Evaluation of NH3-SCR Catalyst Technology on a 250-kW Stationary...  

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

NH3-SCR Catalyst Technology on a 250-kW Stationary Diesel Genset Evaluation of NH3-SCR Catalyst Technology on a 250-kW Stationary Diesel Genset 2005 Diesel Engine Emissions...

84

Study of On-Board Ammonia (NH3) Generation for SCR Operation...  

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

Study of On-Board Ammonia (NH3) Generation for SCR Operation Study of On-Board Ammonia (NH3) Generation for SCR Operation The feasibility of on-board ammonia generation was...

85

Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as...  

NLE Websites -- All DOE Office Websites (Extended Search)

Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as Probed by Reaction Kinetics and EPR Studies. Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as Probed by...

86

EECBG Success Story: Grants to Help N.H. Towns Conserve Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Grants to Help N.H. Towns Conserve Energy EECBG Success Story: Grants to Help N.H. Towns Conserve Energy March 19, 2010 - 4:17pm Addthis New Hampshire has a plan to lower expenses...

87

NH3 generation over commercial Three-Way Catalysts and Lean-NOx...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

use by sector * cars light trucks 3 Managed by UT-Battelle for the U.S. Department of Energy Why NH 3 -generation on TWCs? * Zeolite-based NH 3 -SCR has been shown to have very...

88

Low Temperature Milling of the LiNH2 + LiH Hydrogen Storage System...  

NLE Websites -- All DOE Office Websites (Extended Search)

Milling of the LiNH2 + LiH Hydrogen Storage System. Low Temperature Milling of the LiNH2 + LiH Hydrogen Storage System. Abstract: Ball milling of the LiNH2 + LiH storage system was...

89

E-Print Network 3.0 - asian tropical rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

out that in the case of tropical cyclones or warm rain, substantial amounts... the flash density. CG-lightning and precipitation data are used to compute the values ......

90

E-Print Network 3.0 - atlantic rain forest Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

. 2006. Biased seed rain in forest edges: Evidence from the Brazilian Atlantic forest. Biol. Conserv. 132... forest typical for eastern lowland Borneo (Slik et al. 2009). The...

91

E-Print Network 3.0 - alluvial atlantic rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

types of lowland tropical rain forest: alluvial, sandstone hill... , and kerangas (heath) forest. Alluvial soils are more nutrient rich and have higher soil moisture than...

92

Theoretical study of the ammoniated NH/sub 4/ radical and related structures  

SciTech Connect

The ground- and some of the excited-state surfaces for the reaction of the Rydberg radical NH/sub 4/ to give either NH/sub 3/ + H or NH/sub 2/ + H/sub 2/ are computed. The preferred ground reaction channel is that observed experimentally, the formation of NH/sub 3/ + H. The Rydberg character, as well as the low barrier for fragmentation, is rationalized using a Rydberg extended-state structure correlation diagram. The excited-state surfaces show deep potential wells whose forms are also rationalized using this correlation diagram. Calculations on the surface of tetramethylammonium radical show no enhanced stability due to alkyl substitution. Comparative calculations on the complexation energies of HN/sub 4//sup +/ (NH/sub 3/)/sub n/ and NH/sub 4/(NH/sub 3/)/sub n/, n = 1-6, show the semiionic character of the Rydberg radical. The variation of stepwise complexation energies with n for the Rydberg species is not completely understood. The stability of solvated NH/sub 4/ radical in liquid NH/sub 3/ is estimated to be of the same order as (NH/sub 4//sup +/)/sub s/ + (e/sup -/)/sub s/.

Kassab, E.; Evleth, E.M.

1987-03-18T23:59:59.000Z

93

Simultaneous Retreival of Surface Wind Speed and Rain Rate using Radar and Radiometer Measurements  

E-Print Network (OSTI)

to simultaneously retrieve the vertical profile of precipitation and the near-surface wind speed. ResultsSimultaneous Retreival of Surface Wind Speed and Rain Rate using Radar and Radiometer Measurements simultaneously estimates the over ocean near-surface wind speed and rain rate profile using data from a 10.7 GHz

Ruf, Christopher

94

On the infiltration of rain water through the soil with runo# of the excess water  

E-Print Network (OSTI)

On the infiltration of rain water through the soil with runo# of the excess water Iacopo Borsi '' Viale Morgagni 67/A, 50134 Firenze, Italy Abstract This paper deals with the modelling of the rain water infiltration through the soil above the aquifer in case of runo# of the excess water. The main feature

Fasano, Antonio

95

Smith, Higgin, and Raines Supplementary Data Site-specific folate conjugation to a cytotoxic protein  

E-Print Network (OSTI)

Smith, Higgin, and Raines Supplementary Data ­S1­ Site-specific folate conjugation to a cytotoxic protein Bryan D. Smith, Joshua J. Higgin, and Ronald T. Raines* Page Contents DNA Synthesis S4 References and Notes S5 1 H NMR Spectrum of Folate Analogue 1 #12;Smith, Higgin

Raines, Ronald T.

96

RAIN AND WIND ESTIMATION FROM SEAWINDS IN HURRICANES AT ULTRA HIGH RESOLUTION  

E-Print Network (OSTI)

function (GMF) which relates wind to backscatter (0 ) is not well understood for extremely high wind speedsRAIN AND WIND ESTIMATION FROM SEAWINDS IN HURRICANES AT ULTRA HIGH RESOLUTION Brent A. Williams method for estimating wind and rain in hurricanes from SeaWinds at ultra-high resolution is developed. We

Long, David G.

97

Array-type NH.sub.3 sensor  

SciTech Connect

An array-type sensor that senses NH.sub.3 includes non-Nernstian sensing elements constructed from metal and/or metal-oxide electrodes on an O.sub.2 ion conducting substrate. In one example sensor, one electrode may be made of platinum, another electrode may be made of manganese (III) oxide (Mn.sub.2O.sub.3), and another electrode may be made of tungsten trioxide (WO.sub.3). Some sensing elements may further include an electrode made of La.sub.0.6Sr.sub.0.4Co.sub.0.2Fe.sub0.8O.sub.3 and another electrode made of LaCr.sub.0.95.Mg.sub.0.05O.sub.3.

West, David Lawrence; Montgomery, Frederick Charles; Armstrong, Timothy R; Warmack, Robert J

2013-12-31T23:59:59.000Z

98

Progress on Acidic Zirconia Mixed Oxides for Efficient NH3-SCR Catalysis  

Energy.gov (U.S. Department of Energy (DOE))

Details progress on non-zeolitic zirconia-based mixed oxides as promising new SCR catalyst materials and results of engine bench testing of full-size SCR prototype confirms Details progress on non-zeolitic zirconia-based mixed oxides as promising new SCR catalyst materials and results of engine bench testing of full-size SCR prototype confirms potential for formulation of Euro 6 SCR catalysts

99

Progress on Acidic Zirconia Mixed Oxides for Efficient NH3-SCR...  

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

mixed oxides as promising new SCR catalyst materials and results of engine bench testing of full-size SCR prototype confirms Details progress on non-zeolitic zirconia-based...

100

A review of "The Restoration: England in the 1660s." by N.H. Keeble  

E-Print Network (OSTI)

80 SEVENTEENTH-CENTURY NEWS N.H. Keeble. The Restoration: England in the 1660s. History of Early Modern England series. Oxford: Blackwell, 2002. xvi + 270 pp. $34.95. Review by TY M. REESE, UNIVERSITY OF NORTH DAKOTA. N.H. Keeble...80 SEVENTEENTH-CENTURY NEWS N.H. Keeble. The Restoration: England in the 1660s. History of Early Modern England series. Oxford: Blackwell, 2002. xvi + 270 pp. $34.95. Review by TY M. REESE, UNIVERSITY OF NORTH DAKOTA. N.H. Keeble...

Ty M. Reese

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

On the Differences in Storm Rainfall from Hurricanes Isidore and Lili. Part I: Satellite Observations and Rain Potential  

E-Print Network (OSTI)

Observations and Rain Potential HAIYAN JIANG AND JEFFREY B. HALVERSON Joint Center for Earth Systems Technology 2007) ABSTRACT It has been well known for years that the heavy rain and flooding of tropical cyclones's potential for inland flooding 3­4 days in advance of landfall. 1. Introduction The combination of rain

Jiang, Haiyan

102

Theoretical studies of the structures and electronic properties of U(NH{sub 2}){sub 3} and Np(NH{sub 2}){sub 3}  

SciTech Connect

The electronic structure of the model compounds U(NH{sub 2}){sub 3} and Np(NH{sub 2}){sub 3} is investigated with the aid of ab initio electronic structure techniques. The electronic ground states and equilibrium geometries of these complexes are determined using multi-configuration SCF techniques. Comparisons are made to their counterparts U(CH{sub 3}){sub 3} and Np(CH{sub 3}){sub 3}.

Hay, P.J.; Martin, R.L.

1993-10-01T23:59:59.000Z

103

Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal...  

NLE Websites -- All DOE Office Websites (Extended Search)

Storage Properties of New Hydrogen-Rich BH3NH3-Metal Hydride (TiH2, ZrH2, MgH2, andor CaH2) Composite Systems. Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal...

104

July 2013 GIS Workshops in Lee, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

July 2013 GIS Workshops in Lee, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED Registration://gisworkshops.org email: gis@unh.edu Presented at the NH Sea Grant Extension Offices in Lee by the UNHCE Geospatial Outreach Program Workshop summary: Participants learn the basics of Geographic Information System (GIS

New Hampshire, University of

105

Futile transmembrane NH4 cycling: A cellular hypothesis to explain ammonium  

E-Print Network (OSTI)

4 to be preferred by plants, as its assimilation requires less energy than that of NO3 (1), only with intensive agriculture and cultivation of livestock, where high levels of NH3 emission, and subsequent NH4 is exceeded by as much as 10-fold, and damage to forest and agricultural crops alike has been attributed

Britto, Dev T.

106

A little rain doesn't fix it: Farmers and ranchers remain cautious as drought continues  

E-Print Network (OSTI)

A little rain doesn?t fix it Farmers and ranchers remain cautious as drought continues Summer 2012 tx H2O 11 ] Story by Danielle Kalisek Rains in the Brazos Valley early in 2012 helped this grass green up, but more rains are needed now... have helped ease the pressure, farmers and ranchers remain cautious, remembering the pain of last year as they prepare for the future. ?If you look at what the climatologists are saying, the La Ni?a event expired around the end of April, and we...

Kalisek, Danielle

2012-01-01T23:59:59.000Z

107

Analysis of TRMM Precipitation Radar Algorithms and Rain over the Tropics and Southeast Texas  

E-Print Network (OSTI)

sensitivity of the heating distribution to the stratiform rain fraction. The TRMM PR has two main algorithms to determine rain type and rain totals. The so-called 2A23 algorithm classifies radar profiles as stratiform or convective, while the so- called 2A... meters apart from 20 km down to near the surface, the latter of which can be used to estimate rainfall at the surface for regions across the tropics and portions of the mid-latitudes. The data collected by the PR is processed using a hierarchy...

Funk, Aaron

2013-12-10T23:59:59.000Z

108

Clean coal technology and acid rain compliance: An examination of alternative incentive proposals  

SciTech Connect

The Clean Air Act Amendments (CAAA) of 1990 rely primarily on the use of market incentives to stimulate least-cost compliance choices by electric utilities. Because of the potential risks associated with selecting Clean Coal Technologies (CCTs) and the public-good nature of technology commercialization, electric utilities may be reluctant to adopt CCTs as part of their compliance strategies. This paper examines the nature of the risks and perceived impediments to adopting CCTs as a compliance option. It also discusses the incentives that regulatory policy makers could adopt to mitigate these barriers to CCT adoption. (VC)

McDermott, K.A. (Center for Regulatory Studies, Normal, IL (United States)); South, D.W. (Argonne National Lab., IL (United States))

1991-01-01T23:59:59.000Z

109

Clean coal technology and acid rain compliance: An examination of alternative incentive proposals  

SciTech Connect

The Clean Air Act Amendments (CAAA) of 1990 rely primarily on the use of market incentives to stimulate least-cost compliance choices by electric utilities. Because of the potential risks associated with selecting Clean Coal Technologies (CCTs) and the public-good nature of technology commercialization, electric utilities may be reluctant to adopt CCTs as part of their compliance strategies. This paper examines the nature of the risks and perceived impediments to adopting CCTs as a compliance option. It also discusses the incentives that regulatory policy makers could adopt to mitigate these barriers to CCT adoption. (VC)

McDermott, K.A. [Center for Regulatory Studies, Normal, IL (United States); South, D.W. [Argonne National Lab., IL (United States)

1991-12-31T23:59:59.000Z

110

Lessons from Phase 2 compliance with the U.S. Acid Rain Program  

E-Print Network (OSTI)

This paper provides preliminary answers to four questions concerning the behavior of agents operating under the SO2 Allowance Trading Program that could not be adequately answered until several years' data on compliance ...

Ellerman, A. Denny

2003-01-01T23:59:59.000Z

111

CHOOSING A TRADING COUNTERPART IN THE U.S. ACID RAIN MARKET  

E-Print Network (OSTI)

. Privates are mostly U.S. electricity generators. We find that the SO2 allowances market, as the electricity. Counterparts can be chosen among three alternatives proved to be independent: market makers, brokers or private with large stocks but they also value positively the presence of many brokers (and privates). In line

Paris-Sud XI, Université de

112

E-Print Network 3.0 - acid rain stress Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Environmental Sciences and Ecology ; Geosciences 24 Fog Water and Ecosystem Function: Heterogeneity in a California Summary: and nitrogen (N) fluxes from hori-...

113

An Introduction to Rain Garden Design and Installation Friday, May, 3, 2013 8:30-3:30 pm (Installation rain date May 6)  

E-Print Network (OSTI)

, 2013 To register contact Candace Dolan cjdolan@ccsnh.edu or Call 603-559-1529 A light breakfast Coordinator; Dr. Cathy Neal, UNHCE Specialist, Landscape Horticulture; Julia Peterson, NH Sea Grant

New Hampshire, University of

114

Food resources of the rain forest by Claude Marcel HLADJK and Annette HLAD!K  

E-Print Network (OSTI)

certainly present in the African rain forest long before humankind, provide large starchy tubers. In order the mostcommon wild yamsofthe forest, Dioscorea burldlliana, has globular tubers localed at the end of narrow

Paris-Sud XI, Université de

115

Effects of Rain Rate and Wind Magnitude on SeaWinds Scatterometer Wind Speed Errors  

Science Journals Connector (OSTI)

Rain within the footprint of the SeaWinds scatterometer on the QuikSCAT satellite causes more significant errors than existed with its predecessor, the NASA scatterometer (NSCAT) on Advanced Earth Observing Satellite-I (ADEOS-I). Empirical ...

David E. Weissman; Mark A. Bourassa; Jeffrey Tongue

2002-05-01T23:59:59.000Z

116

E-Print Network 3.0 - african equatorial rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

22352255 doi: 10.1256qj.05.121 Stratiform precipitation production over sub-Saharan Africa and the tropical Summary: , resulting in less stratiform rain. Strong upper-level...

117

Air and rain toxics deposition monitoring in Galveston Bay Texas  

SciTech Connect

In order to fulfill the mandates of the Great Waters Program and portions of the Clean Air Act Amendments of 1990, the Environmental Protection Agency (EPA) has initiated atmospheric monitoring research in important and representative water bodies, including coastal waters, for evidence of atmospheric deposition of pollutants. These pollutants include nutrients, trace metals, polynuclear aromatic hydrocarbons and PCBs. A site was established in Seabrook Texas on the western shore of Galveston Bay representative of southern, coastal water system. This study determines selected environmental pollutants of potential concern to Galveston Bay and other Gulf coastal waters. While information is currently being generated by other investigations in Galveston Bay, such as EPA EMAP, Galveston Bay National Estuary, NOAA Status and Trends and other programs on contaminants in sediments and organisms, little reliable data is available to assess atmospheric deposition. The importance of atmospheric deposition of contaminants to Galveston Bay, based on air and rain samples collected continuously from March 1995 to March 1996 will be presented and compared to the results from other Great Waters Program sites. These results are critical to the understanding of the relative importance of various contaminant inputs to Galveston Bay by estimating atmospheric depositional fluxes.

Wade, T.; Sweet, S.; Park, J.; Cifuentes, L.; Tindale, N.; Santschi, P.; Gill, G. [Texas A and M Univ., College Station, TX (United States). Coll. of Geosciences and Maritime Studies

1995-12-31T23:59:59.000Z

118

3-D agricultural air quality modeling: Impacts of NH3/H2S gasphase reactions and bi-directional exchange of NH3  

Science Journals Connector (OSTI)

Abstract Accurately simulating the transport and fate of reduced nitrogen (NHx=ammonia (NH3)+ammonium (NH4+))- and sulfur-containing compounds emitted from agricultural activities represents a major challenge in agricultural air quality modeling. In this study, the Community Multiscale Air Quality (CMAQ) modeling system is further developed and improved by implementing 22 ammonia (NH3)/hydrogen sulfide (H2S) related gas-phase reactions and adjusting a few key parameters (e.g., emission potential) for bi-directional exchange of NH3 fluxes. Several simulations are conducted over the eastern U.S. domain at a 12-km horizontal resolution for January and July 2002 to examine the impacts of those improved treatments on air quality. The 5th generation mesoscale model (MM5) and CMAQ predict an overall satisfactory and consistent performance with previous modeling studies, especially for 2-m temperature, 2-m relative humidity, ozone (O3), and fine particulate matter (PM2.5). High model biases exist for precipitation in July and also dry/wet depositions. The updated model treatments contribute to O3, NHx, and PM2.5 by up to 0.4ppb, 1.0?gm?3, and 1.0?gm?3 in January, respectively, and reduce O3 by up to 0.8ppb and contribute to \\{NHx\\} and PM2.5 by up to 1.2 and 1.1?gm?3 in July, respectively. The spatial distributions of O3 in both months and sulfur dioxide (SO2) in January are mainly affected by inline dry deposition velocity calculation. The spatial distributions of SO2 and sulfate (SO42?) in July are affected by both inline dry deposition velocity and NH3/H2S reactions. The variation trends of NH3, NHx, ammonium nitrate (NH4NO3), PM2.5 and total nitrogen (TN) are predominated by bi-directional exchange of NH3 fluxes. Uncertainties of NH3 emission potentials and empirical constants used in the bi-directional exchange scheme may significantly affect the concentrations of \\{NHx\\} and PM2.5, indicating that a more accurate and explicit treatment for those parameters should be considered in the future work.

Kai Wang; Yang Zhang

2014-01-01T23:59:59.000Z

119

OPTICAL CONSTANTS OF NH{sub 3} AND NH{sub 3}:N{sub 2} AMORPHOUS ICES IN THE NEAR-INFRARED AND MID-INFRARED REGIONS  

SciTech Connect

Ammonia ice has been detected on different astrophysical media ranging from interstellar medium (ISM) particles to the surface of various icy bodies of our solar system, where nitrogen is also present. We have carried out a detailed study of amorphous NH{sub 3} ice and NH{sub 3}:N{sub 2} ice mixtures, based on infrared (IR) spectra in the mid-IR (MIR) and near-IR (NIR) regions, supported by theoretical quantum chemical calculations. Spectra of varying ice thicknesses were obtained and optical constants were calculated for amorphous NH{sub 3} at 15 K and 30 K and for a NH{sub 3}:N{sub 2} mixture at 15 K over a 500-7000 cm{sup 1} spectral range. These spectra have improved accuracy over previous data, where available. Moreover, we also obtained absolute values for the band strengths of the more prominent IR features in both spectral regions. Our results indicate that the estimated NH{sub 3} concentration in ISM ices should be scaled upward by ?30%.

Zanchet, Alexandre; Rodrguez-Lazcano, Yamilet; Glvez, scar; Herrero, Vctor J.; Escribano, Rafael; Mat, Beln, E-mail: belen.mate@csic.es [Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid (Spain)

2013-11-01T23:59:59.000Z

120

Simulation of an Ar/NH{sub 3} low pressure magnetized direct current discharge  

SciTech Connect

A two-dimensional fluid model has been used to investigate the properties of plasma in an Ar/NH{sub 3} low pressure magnetized direct current discharge. We compared the simulation results with the theoretical and experimental results of the other gas discharge in which the magnetic field is considered. Results that obtained using this method are in good agreement with literature. The simulation results show that the positive ammonia ion density follows the positive argon ion density. The Ar{sub 2}{sup +} density is slightly higher than the Ar{sup +} density at 100 mTorr. The largest ammonia ion is NH{sub 3}{sup +} ion, followed by NH{sub 2}{sup +}, NH{sub 4}{sup +}, and NH{sup +} ions. The contribution of NH{sup +} ions to the density of the positive ammonia ions is marginal. The influence of pressure on the plasma discharge has been studied by simulation, and the mechanisms have been discussed. The average plasma density increases as pressure increased. The plasma density appears to be more inhomogeneous than that at the lower pressure. The ratio of charge particles changed as pressure increased. The Ar{sup +} density is slightly higher than the Ar{sub 2}{sup +} density as the pressure increased. It makes NH{sub 4}{sup +} ratio increase as pressure increased. It shows that the electron temperature drops with rising pressure by numerical calculation.

Li Zhi [School of Science, University of Science and Technology Liaoning, Anshan 114051 (China); School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024 (China); Zhao Zhen [School of Chemistry and Life Science, Anshan Normal University, Anshan 114007 (China); School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051 (China); Li Xuehui [Physiccal Science and Technical College, Dalian University, Dalian 116622 (China)

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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.


121

Global distributions, time series and error characterization of atmospheric ammonia (NH[subscript 3]) from IASI satellite observations  

E-Print Network (OSTI)

Ammonia (NH[subscript 3]) emissions in the atmosphere have increased substantially over the past decades, largely because of intensive livestock production and use of fertilizers. As a short-lived species, NH[subscript 3] ...

Van Damme, M.

122

MISE EN VIDENCE D'UN ORDRE A COURTE DISTANCE DANS LA PHASE II DES CRISTAUX DE NH4Cl,  

E-Print Network (OSTI)

respectivement au point tricritique et au point de transition phase II - phase IV pour les cristaux de NH4Cl. Phase IV : phase cubique ordonnée ; tous les ions NH4 sont dans la configuration 1. Phase II : phase configuration 2. Phase III : phase tétragonale ordonnée ; les ions NH4 sont alternativement dans la

Boyer, Edmond

123

Consequences of Substituting 2NH2A for a in Synthetic DNAS  

Science Journals Connector (OSTI)

Chemical and spectroscopic consequences of replacing A with 2NH2A have been examined in a variety of synthetic DNAs. This substitution, which permits formation...m elevation, however, is much smaller in the deox...

Frank B. Howard; H. Todd Miles

1983-01-01T23:59:59.000Z

124

NH3 generation over commercial Three-Way Catalysts and Lean-NOx...  

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

formulations and operation for the in-situ generation of NH3, storage on a downstream SCR catalyst, and utilized to reduce the remaining NOx deer12toops.pdf More Documents &...

125

Volume 130, number 6 CHEMICAL PHYSICS LETTERS 24 October1986 VIBRATIONAL DEPENDENCE OF THE NH,+ (v2)+NO AND NO+(v) +NH,  

E-Print Network (OSTI)

Volume 130, number 6 CHEMICAL PHYSICS LETTERS 24 October1986 VIBRATIONAL DEPENDENCE OF THE NH,+ (v2 of an electron by the ion as it passes by its neutral collision partner. Such so-called charge transfer reactions reactions would suggest a fast rate controlled by the Langevin capture cross section [ 61. This in turn

Zare, Richard N.

126

Photo of the Week: Rain or Shine, Preparing for the 2013 Hurricane Season |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rain or Shine, Preparing for the 2013 Hurricane Rain or Shine, Preparing for the 2013 Hurricane Season Photo of the Week: Rain or Shine, Preparing for the 2013 Hurricane Season May 15, 2013 - 1:16pm Addthis President Barack Obama listens to Acting Energy Secretary Daniel B. Poneman during a meeting with electric utility CEOs and trade association representatives at the Department of Energy in Washington, D.C., May 8, 2013. The group met to discuss lessons learned during the response to Hurricane Sandy, as well as the ongoing preparations for 2013 hurricane season, which begins June 1. | Official White House Photo by Pete Souza. President Barack Obama listens to Acting Energy Secretary Daniel B. Poneman during a meeting with electric utility CEOs and trade association representatives at the Department of Energy in Washington, D.C., May 8,

127

Watch Out for the Snakes! 21 Biologists and one Physicist in a Rain Forest  

NLE Websites -- All DOE Office Websites (Extended Search)

Watch Out for the Snakes! 21 Biologists and one Physicist in a Rain Forest Watch Out for the Snakes! 21 Biologists and one Physicist in a Rain Forest in Nicaragua Speaker(s): Donald Grether Date: June 29, 2007 - 12:00pm Location: 90-3122 Don, his wife Becky, and their granddaughter Briana recently returned from spending almost three weeks at a field station in a rain forest in Nicaragua, along with UCLA faculty members, graduate students, and undergraduates. Our location was way off the beaten track, even for "eco-tourists", and could only be reached by a three-hour boat trip on Rio San Juan. No hot water or space heating or cooling, running water most but not all of the time, no electricity in our rooms, no windows, and no Internet. Sort of like a near-zero energy building. Don's presentation will include photos that give some sense of why we went, what it took to

128

Addition of NH{sub 3} to Al{sub 3}O{sub 3}{sup -}  

SciTech Connect

Recent computational studies on the addition of ammonia (NH{sub 3}) to the Al{sub 3}O{sub 3}{sup -} cluster anion [A. Guevara-Garcia, A. Martinez, and J. V. Ortiz, J. Chem. Phys. 122, 214309 (2005)] have motivated experimental and additional computational studies, reported here. Al{sub 3}O{sub 3}{sup -} is observed to react with a single NH{sub 3} molecule to form the Al{sub 3}O{sub 3}NH{sub 3}{sup -} ion in mass spectrometric studies. This is in contrast to similarly performed studies with water, in which the Al{sub 3}O{sub 5}H{sub 4}{sup -} product was highly favored. However, the anion PE spectrum of the ammoniated species is very similar to that of Al{sub 3}O{sub 4}H{sub 2}{sup -}. The adiabatic electron affinity of Al{sub 3}O{sub 3}NH{sub 3} is determined to be 2.35(5) eV. Based on comparison between the spectra and calculated electron affinities, it appears that NH{sub 3} adds dissociatively to Al{sub 3}O{sub 3}{sup -}, suggesting that the time for the Al{sub 3}O{sub 3}{sup -}{center_dot}NH{sub 3} complex to either overcome or tunnel through the barrier to proton transfer (which is higher for NH{sub 3} than for water) is short relative to the time for collisional cooling in the experiment.

Wyrwas, Richard B.; Jarrold, Caroline Chick; Das, Ujjal; Raghavachari, Krishnan [Indiana University, Department of Chemistry, Bloomington, Indiana 47405-7102 (United States)

2006-05-28T23:59:59.000Z

129

A Nonparametrized Ab Initio Determination of the Heat of Formation of Hydroxylamine, NH2OH  

SciTech Connect

Large basis set coupled cluster calculations through noniterative triple excitations were used to compute optimized structures, harmonic vibrational frequencies, atomization energies at 0 K and heats of formation at 298 K for hydroxylamine (NH2OH) and three related compounds (NH3, HNO and H2O2). The use of basis sets as large as augmented sextuple zeta resulted in small extrapolations to the complete basis set limit in order to achieve chemical accuracy ( 1 kcal/mol) in the thermodynamic properties. Complete basis set estimates were determined from several simple extrapolation formulas. In addition, four other corrections were applied to the frozen core atomization energies, (1) a zero point vibrational correction: (2) a core/valence correlation correction; (3) a Douglas-Kroll-Hess scalar relativistic correction; and (4) a first order atomic spin-orbit correction. For NH3 and HNO we incorporated a fifth correction term intended to approximate the difference between coupled cluster theory and the full configuration interact result. This correction was based on coupled cluster theory through iterative quadruple excitations (CCSDTQ). Excellent agreement with experiment was found for the heats of formation of NH3, HNO and H2O2. For NH2OH the best current estimate of the heat of formation at 298 K is 10.1 0.3 kcal/mol, which falls roughly midway between two experimental values at 12.0 2.4 and 7.9 1.5 kcal/mol.

Feller, David F.; Dixon, David A.

2003-12-04T23:59:59.000Z

130

Grants to Help N.H. Towns Conserve Energy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Grants to Help N.H. Towns Conserve Energy Grants to Help N.H. Towns Conserve Energy Grants to Help N.H. Towns Conserve Energy March 19, 2010 - 4:17pm Addthis New Hampshire has a plan to lower expenses and create jobs, all while conserving energy. In all, the state has received $17.3 million in Energy Efficiency and Conservation Block Grant (EECBG) funding. Of that, $9.6 million has been sent to the New Hampshire Office of Energy and Planning (NHOEP) to launch several energy saving projects. NHOEP established a subgrant program to award $6.6 million of the EECBG grant funding to local municipalities and counties. New Hampshire municipalities and counties submitted over 270 applications, totaling over $21 million in grant requests. "Substantial energy efficiency improvements will be made throughout the

131

Grants to Help N.H. Towns Conserve Energy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Grants to Help N.H. Towns Conserve Energy Grants to Help N.H. Towns Conserve Energy Grants to Help N.H. Towns Conserve Energy March 19, 2010 - 4:17pm Addthis New Hampshire has a plan to lower expenses and create jobs, all while conserving energy. In all, the state has received $17.3 million in Energy Efficiency and Conservation Block Grant (EECBG) funding. Of that, $9.6 million has been sent to the New Hampshire Office of Energy and Planning (NHOEP) to launch several energy saving projects. NHOEP established a subgrant program to award $6.6 million of the EECBG grant funding to local municipalities and counties. New Hampshire municipalities and counties submitted over 270 applications, totaling over $21 million in grant requests. "Substantial energy efficiency improvements will be made throughout the

132

A Review & Assessment of Current Operating Conditions Allowable Stresses in ASME Section III Subsection NH  

SciTech Connect

The current operating condition allowable stresses provided in ASME Section III, Subsection NH were reviewed for consistency with the criteria used to establish the stress allowables and with the allowable stresses provided in ASME Section II, Part D. It was found that the S{sub o} values in ASME III-NH were consistent with the S values in ASME IID for the five materials of interest. However, it was found that 0.80 S{sub r} was less than S{sub o} for some temperatures for four of the materials. Only values for alloy 800H appeared to be consistent with the criteria on which S{sub o} values are established. With the intent of undertaking a more detailed evaluation of issues related to the allowable stresses in ASME III-NH, the availabilities of databases for the five materials were reviewed and augmented databases were assembled.

R. W. Swindeman

2009-12-14T23:59:59.000Z

133

Superionicity in the hydrogen storage material Li2NH: Molecular dynamics simulations  

Science Journals Connector (OSTI)

We have employed ab initio molecular dynamics simulations in an attempt to study a temperature-induced order-disorder structural phase transformation that occurs in Li2NH at about 385 K. A structural phase transition was observed by us in the temperature range 300400 K, in good agreement with experiment. This transition is associated with a melting of the cation sublattice (Li+), giving rise to a superionic phase, which in turn is accompanied by an order-disorder transition of the N-H bond orientation. The results obtained here can contribute to a better understanding of the hydrogen storage reactions involving Li2NH and furthermore broaden its possible technological applications toward batteries and fuel cells.

C. Moyss Arajo; Andreas Blomqvist; Ralph H. Scheicher; Ping Chen; Rajeev Ahuja

2009-05-08T23:59:59.000Z

134

Efficient chemical regeneration of LiBH4NH3 spent fuel for hydrogen storage  

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Abstract The absence of an efficient method for the regeneration of ammine metal borohydrides (M(BH4)nxNH3, AMBs) from their dehydrogenated products has hindered their potential application as hydrogen storage materials. In this paper, we demonstrate a high-yield chemical regeneration of LiBH4NH3 based on a three step process (digestion (H+ addition), reduction (H? addition), and ammonia complexation) at ambient temperature. Our results demonstrated that LiBN polymer was digested by methanol to form LiB(OCH3)4, which can be converted into LiBH4 by using LiAlH4 in the reduction process. The generation of LiBH4NH3 in ammonia complexion step was achieved by exposing the obtained LiBH4 in an ammonia atmosphere.

Yingbin Tan; Xiaowei Chen; Guanglin Xia; Xuebin Yu

2014-01-01T23:59:59.000Z

135

Validation and Development of Melting Layer Models Using Constraints by Active/Passive Microwave Observations of Rain and the Wind-Roughened  

E-Print Network (OSTI)

Observations of Rain and the Wind-Roughened Ocean Surface SHANNON T. BROWN* AND CHRISTOPHER S. RUF Department

Ruf, Christopher

136

ENJOYING THE RAIN FOREST Nowhere in the world will your eyes observe a greater  

E-Print Network (OSTI)

than what is waiting for you in the rain forest in the Luquillo Mountains. According to ancient Indian and its people. The name Luquillo is derived from this god spirit's Indian name. Many of the sights you Trail PR 9966 To El Verde Km 7.8 Las Cabezas Observation Point Km 8.1 La Coca Falls Access Control Gate

137

AUGUST 2005AMERICAN METEOROLOGICAL SOCIETY | 1069 he Community Collaborative Rain, Hail, and  

E-Print Network (OSTI)

Educa- tion (ISE) program to expand into rural areas of far eastern Colorado, southern Wyoming, western. of rain over a small portion of Fort Collins, Colorado, on 28 July 1997, and a similar storm the following evening over the grasslands of northeastern Colorado. These floods were respon- sible for several

Rutledge, Steven

138

DISDROMETER RAIN DROP STATISTICS FOR DARWIN AND THE SOUTHERN GREAT PLAINS SITE  

E-Print Network (OSTI)

DISDROMETER RAIN DROP STATISTICS FOR DARWIN AND THE SOUTHERN GREAT PLAINS SITE M. J. Bartholomew Associates, LLC under Contract No. DE-AC02- 98CH10886 with the U.S. Department of Energy. The publisher-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript

139

Large-scale experimental wind-driven rain exposure investigations of building integrated photovoltaics  

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Building integrated photovoltaics (BIPVs) are photovoltaic materials that replace conventional building materials in parts of the building envelopes, such as roofs or facades, i.e. the BIPV system serves dual purposes, as both a building envelope material and a power generator. Hence, it is important to focus on the building envelope properties of a BIPV system in addition to energy generation performance when conducting experimental investigations of BIPVs. The aim of this work was to illustrate challenges linked to the building envelope properties of a BIPV system, and to develop and evaluate relevant methods for testing the building envelope properties of BIPV systems. A sample roof area with two BIPV modules was built and tested in a turnable box for rain and wind tightness testing of sloping building surfaces with the aim of investigating the rain tightness of the BIPV system, and observing how it withstood wind-driven rain at large-scale conditions. The BIPV sample roof went through testing with run-off water and wind-driven rain with incremental pulsating positive differential pressure over the sample at two different inclinations. The BIPV sample roof was during testing constantly visually monitored, and various leakage points were detected. In order to prevent such water penetration, the steel fittings surrounding the BIPV modules should ideally be better adapted to the BIPV modules and constricted to some extent. It is however important to maintain a sufficient ventilation rate simultaneously.

Christer Breivik; Bjrn Petter Jelle; Berit Time; ystein Holmberget; John Nygrd; Einar Bergheim; Arvid Dalehaug

2013-01-01T23:59:59.000Z

140

Floods are too much water on normally dry land. Rivers can flood after heavy rain  

E-Print Network (OSTI)

count. Flash floods move with lightning speed! Move to higher ground--leave everything and run. A flash heavily, there may be flash floods. Flash floods occur in mountain streams, canyons or dry washes. They also happen on low spots in cities and suburbs. Flash floods can occur even though it's not raining

Note: This page contains sample records for the topic "nh acid rain" 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

With Chest Waders, Hip Boots, Or Rain Gear R. O. Parker Jr.  

E-Print Network (OSTI)

With Chest Waders, Hip Boots, Or Rain Gear R. O. Parker Jr. Neither chest wade rs, hip boots, nor actually be the safe st. If y ou are wearing bulky clothing in addition toyour boots, and do nothing afte r my head, will my waterlogged boots '~ and clothing cause me to sink? If I plunge in head first

142

The time it never rained: How Texas water management has changed because of recurring droughts  

E-Print Network (OSTI)

. I get to thinkin? sometimes that maybe drouth is the normal condition here and the rainy years are the #25;eaks.? Charlie Flagg Chapter #23;#21; #31;e Time It Never Rained, by Elmer Kelton ?#30;e drought of the #23;#22;#21;#24;s was a lot...

Wythe, Kathy

2011-01-01T23:59:59.000Z

143

VALIDATION OF RAIN RATE RETRIEVALS FROM SEVIRI USING WEATHER RADAR OBSERVATIONS  

E-Print Network (OSTI)

and for improving parameterization cloud processes in numerical weather prediction (NWP) models or assimilation in these models. Although operational networks of Weather Radars are expanding over Europe and the United StatesVALIDATION OF RAIN RATE RETRIEVALS FROM SEVIRI USING WEATHER RADAR OBSERVATIONS R. A. Roebeling

Stoffelen, Ad

144

for Better Homes The effects of loads from wind, snow and rain on houses and other  

E-Print Network (OSTI)

for Better Homes The effects of loads from wind, snow and rain on houses and other light have not been known. Now, however, The Insurance Research Lab for Better Homes, a groundbreaking $7 these questions. What is The Insurance Research Lab for Better Homes? · First-of-its-kind facility that allows

Denham, Graham

145

Polymorphism and optical properties in [NH{sub 4}][InSe{sub 2}  

SciTech Connect

The solvothermal synthesis and characterization of two indium selenides with stoichiometry [NH{sub 4}][InSe{sub 2}] is described. Yellow [NH{sub 4}][InSe{sub 2}] (1), which exhibits a layered structure, was initially prepared in an aqueous solution of trans-1,4-diaminocyclohexane, and subsequently using a concentrated ammonia solution. A red polymorph of one-dimensional character, [NH{sub 4}][InSe{sub 2}] (2), was obtained using 3,5-dimethylpyridine as solvent. [NH{sub 4}][InSe{sub 2}] (1) crystallizes in the non-centrosymmetric space group Cc (a=11.5147(6), b=11.3242(6), c=15.9969(9) and ?=100.354(3)). The structural motif of the layers is the In{sub 4}Se{sub 10} adamantane unit, composed of four corner-linked InSe{sub 4} tetrahedra. These units are linked by their corners, forming [InSe{sub 2}]{sup ?} layers which are stacked back to back along the c-direction, and interspaced by [NH{sub 4}]{sup +}cations. The one-dimensional polymorph, (2), crystallizes in the tetragonal space group, I4/mcm (a=8.2519(16), c=6.9059 (14) ). This structure contains infinite chains of edge-sharing InSe{sub 4} tetrahedra separated by [NH{sub 4}]{sup +} cations. - Graphical abstract: Two polymorphic forms of [NH{sub 4}][InSe{sub 2}], which are yellow and red, have been prepared and their optical properties investigated. Highlights: Two new indium selenides prepared by a solvothermal method. Depending on synthesis conditions, two polymorphic forms of [NH{sub 4}][InSe{sub 2}] prepared. Layered polymorph contains In{sub 4}Se{sub 10} adamantane clusters, linked by their corners. One-dimensional polymorph contains [InSe{sub 2}]{sup ?} chains of edge-sharing tetrahedra. Non-centrosymmetric layered polymorph shows a second harmonic generation response.

Ewing, Sarah J. [Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS (United Kingdom); Woodward, David I. [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Powell, Anthony V. [Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS (United Kingdom); Vaqueiro, Paz, E-mail: P.Vaqueiro-Rodriguez@hw.ac.uk [Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS (United Kingdom)

2013-08-15T23:59:59.000Z

146

Measurement of Hyperfine Structure in the Infrared Rotation-Vibration Spectrum of NH-  

Science Journals Connector (OSTI)

Hyperfine structure (hfs) has been observed in the P, Q, and R branches of the fundamental rotation-vibration spectrum of the X?2 electronic state of the molecular anion NH-. A coaxial ion-beam-laser-beam spectrometer is employed in which rotation-vibration transitions are induced by a color-center laser operating near 3000 cm-1. The vibrationally excited ions autodetach, and the fast neutral NH is detected. The structure has been analyzed and the magnetic dipole hfs parameters obtained in both N14H- and N15H-. This is the first analyzed case of hfs in any molecular anion.

Harold C. Miller; Mohammad Al-Za'al; John W. Farley

1987-05-18T23:59:59.000Z

147

Atmospheric deposition of {sup 7}Be by rain events, incentral Argentina  

SciTech Connect

Beryllium-7 is a natural radionuclide that enters into the ecosystems through wet and dry depositions and has numerous environmental applications in terrestrial and aquatic ecosystems. Atmospheric wet deposition of {sup 7}Be was measured in central Argentina. Rain traps were installed (1 m above ground) and individual rain events have been collected. Rain samples were filtered and analyzed by gamma spectrometry. The gamma counting was undertaken using a 40%-efficient p-type coaxial intrinsic high-purity natural germanium crystal built by Princeton Gamma-Tech. The cryostat was made from electroformed high-purity copper using ultralow-background technology. The detector was surrounded by 50 cm of lead bricks to provide shielding against radioactive background. The detector gamma efficiency was determined using a water solution with known amounts of chemical compounds containing long-lived naturally occurring radioisotopes, {sup 176}Lu, {sup 138}La and {sup 40}K. Due to the geometry of the sample and its position close to the detector, the efficiency points from the {sup 176}Lu decay, had to be corrected for summing effects. The measured samples were 400 ml in size and were counted curing one day. The {sup 7}Be detection limit for the present measurements was as low as 0.2 Bq l{sup -1}. Thirty two rain events were sampled and analyzed (November 2006-May 2007). The measured values show that the events corresponding to low rainfall (<20 mm) are characterized by significantly higher activity concentrations (Bq l{sup -1}). The activity concentration of each individual event varied from 0.8 to 3.5 Bq l{sup -1}, while precipitations varied between 4 and 70 mm. The integrated activity by event of {sup 7}Be was fitted with a model that takes into account the precipitation amount and the elapsed time between two rain events. The integrated activities calculated with this model show a good agreement with experimental values.

Ayub, J. Juri; Velasco, H.; Rizzotto, M. [Grupo de Estudios Ambientales. Instituto de Matematica Aplicada San Luis. Universidad National de San Luis--CONICET. Ejercito de los Andes 950. Argentina (Argentina); Di Gregorio, D. E.; Huck, H. [Departamento de Fisica, Comision National de Energia Atomica, Av. Gral. Paz 1499, 1650 San Martin, Provincia de Buenos Aires (Argentina); Escuela de Ciencia y Tecnologia, Universidad National de San Martin. Martin de Irigoyen 3100, 1650 San Martin, Provincia de Buenos Aires, Argentina. (Argentina)

2008-08-07T23:59:59.000Z

148

Vol. 92 Concord, NH, Wednesday, November 6, 2013 No. 37 Weekly Market Bulletin  

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to recruit new members and future customers for the full-service cooperative grocery store the group plans sustainability. The cooperative- ly owned business "strives to serve the North Country of New HampshireVol. 92 Concord, NH, Wednesday, November 6, 2013 No. 37 Weekly Market Bulletin State of New

New Hampshire, University of

149

March 2012 GIS Workshops in Concord, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

March 2012 GIS Workshops in Concord, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED. phone: 603.862.1029 web: http://gisworkshops.org email: gis@unh.edu GIS 101: Learning to Map in the Digital Age March 27th, 9am to noon Topics covered: basic GIS concepts types of GIS data types of GIS

New Hampshire, University of

150

May 2012 GIS Workshops in Plymouth, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

May 2012 GIS Workshops in Plymouth, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED Registration. phone: 603.862.1029 web: http://gisworkshops.org email: gis@unh.edu GIS 101: Learning to Map in the Digital Age May 10, 9am to noon Topics covered: basic GIS concepts types of GIS data types of GIS software

New Hampshire, University of

151

April 2012 GIS Workshops in Conway, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

April 2012 GIS Workshops in Conway, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED Registration.862.1029 web: http://gisworkshops.org email: gis@unh.edu GIS 101: Learning to Map in the Digital Age April 18, 9am to noon Topics covered: basic GIS concepts types of GIS data types of GIS software $49 Skill

New Hampshire, University of

152

January 2012 GIS Workshops in Durham, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

January 2012 GIS Workshops in Durham, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED.862.1029 web: http://gisworkshops.org email: gis@unh.edu GIS 101: Learning to Map in the Digital Age January 10th, 9am to noon Topics covered: basic GIS concepts types of GIS data types of GIS software $49 Skill

New Hampshire, University of

153

June 2013 GIS Workshops in Plymouth, NH SPACE IS LIMITED -PRE-REGISTRATION IS REQUIRED  

E-Print Network (OSTI)

June 2013 GIS Workshops in Plymouth, NH SPACE IS LIMITED - PRE-REGISTRATION IS REQUIRED. phone: 603.862.1029 web: http://gisworkshops.org email: gis@unh.edu Presented at the Whole Village: Participants learn the basics of Geographic Information System (GIS) mapping software and explore a variety

New Hampshire, University of

154

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4?-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixedvalence complexes [(NH3)5Ru-L- Ru(NH3)5]5+ (L = N2,pyz, bipy, pym, bpa) is analyzed by the semiempirical CINDO +...

O. V. Sizova; V. I. Baranovskii; A. I. Panin

155

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixed-valence complexes [NH3)5Ru -L-Ru(NH3)5]5+ (L = N2, pyz, bipy, pym, bpa) is analyzed by the semiempiri...

O. V. Sizova; V. I. Baranovskii; A. I. Panin

2002-02-01T23:59:59.000Z

156

Presented in Concord, Merrimack and West Lebanon, NH by the UNHCE Geospatial Outreach Program ArcGIS Workshops Fall 2012  

E-Print Network (OSTI)

Drivers Permit 10 1-day, 9am to 4pm To be announced Topics covered: ArcGIS 10 Exploring GIS maps Basic GIS Lebanon, NH December 4-6, Merrimack, NH Topics covered: ArcGIS 10 Creating GIS maps GIS techniques GIS and applications, participants learn how to use ArcGIS 10 to produce effective maps, edit and create GIS data

New Hampshire, University of

157

CHNG 5 CHNG TRNH KHI PHC SM XUT: PHT TRIN V NH GI CC GII PHP ...............................................................................................................................................................1  

E-Print Network (OSTI)

Lng Môi Trng(CEQ) v vic thc hin Chính Sách Lut Môi Trng Quc Gia (NEPA) cng hng dn các t chc nghiên cu hp lý nu áp ng c mc tiêu và yêu cu ra, khôi phc hoc làm tng cht lng môi trng nhân sinh, và phòng tránh hoc gim thiu các hiu ng tiêu cc t hành ng ca các t chc ti cht lng môi trng nhân sinh (40 C

158

Radiochemical investigations of 177Lu-DOTA-8-Aoc-BBN[7-14]NH2: an in vitro/in vivo assessment of the targeting ability of this new radiopharmaceutical for PC-3 human prostate cancer cells  

Science Journals Connector (OSTI)

Bombesin (BBN), a 14 amino acid peptide, is an analogue of human gastrin releasing peptide (GRP) that binds to GRP receptors (GRPr) with high affinity and specificity. The \\{GRPr\\} is over expressed on a variety of human cancer cells including prostate, breast, lung, and pancreatic cancers. The specific aim of this study was to identify a BBN analogue that can be radiolabeled with 177Lu and maintains high specificity for \\{GRPr\\} positive prostate cancer tumors in vivo. A preselected synthetic sequence via solid phase peptide synthesis (SPPS) was designed to produce a DOTA-BBN (DOTA = 1,4,7,10-tetraazacyclododecane-N,N?,N??,N???-tetraacetic acid) conjugate with the following general structure: DOTA-X-Q-W-A-V-G-H-L-M-(NH2), where the spacer group, X = ?-NH2(CH2)7COOH (8-Aoc). The BBN-construct was purified by reversed phase-HPLC (RP-HPLC). Electrospray Mass Spectrometry (ES-MS) was used to characterize both metallated and non-metallated BBN-conjugates. The new DOTA-conjugate was metallated with 177Lu(III)Cl3 or non-radioactive Lu(III)Cl3. The 177Lu(III)- and non-radiolabeled Lu(III)-conjugates exhibit the same retention times under identical RP-HPLC conditions. The 177Lu-DOTA-8-Aoc-BBN[7-14]NH2 conjugate was found to exhibit optimal pharmacokinetic properties in CF-1 normal mice. In vitro and in vivo models demonstrated the ability of the 177Lu-DOTA-8-Aoc-BBN[7-14]NH2 conjugate to specifically target GRP receptors expressed on PC-3 human prostate cancer cells.

C.Jeffrey Smith; Hariprasad Gali; Gary L. Sieckman; Donald L. Hayes; Nellie K. Owen; Dana G. Mazuru; Wynn A. Volkert; Timothy J. Hoffman

2003-01-01T23:59:59.000Z

159

A novel method for the purification of prephenic acid  

E-Print Network (OSTI)

in the K ? of components eluting av with prephenate from G-10/NH4HC03 column. . III Elemental analysis of barium prephenate. . Page 22 28 30 is P rfi ti of p phe ic acid f ~oos o c essa. . . 35 LIST OF FIGURES Figure Prephenic acid Page... of the degree of cross-linking, type of gel and eluting solvent polarity on the separation of cis and trans-cin- namic acids. They found that the degree of cross-linking influences the degree of adsorption, as defined by K . The K for Sephadex 1 av av G-10...

Harding, Tammy Tiner

2012-06-07T23:59:59.000Z

160

Evaluation of Ensemble Configurations for the Analysis and Prediction of Heavy-Rain-Producing Mesoscale Convective Systems  

Science Journals Connector (OSTI)

This study investigates probabilistic forecasts made using different convection-allowing ensemble configurations for a three-day period in June 2010 when numerous heavy-rain-producing mesoscale convective systems (MCSs) occurred in the United ...

Russ S. Schumacher; Adam J. Clark

2014-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

A Real-Time Algorithm for Merging Radar QPEs with Rain Gauge Observations and Orographic Precipitation Climatology  

Science Journals Connector (OSTI)

High-resolution, accurate quantitative precipitation estimation (QPE) is critical for monitoring and prediction of flash floods and is one of the most important drivers for hydrological forecasts. Rain gauges provide a direct measure of ...

Jian Zhang; Youcun Qi; Carrie Langston; Brian Kaney; Kenneth Howard

2014-10-01T23:59:59.000Z

162

Experimentally Based Estimates of Relations between X-Band Radar Signal Attenuation Characteristics and Differential Phase in Rain  

Science Journals Connector (OSTI)

Correcting observed polarimetric radar variables for attenuation and differential attenuation effects in rain is important for meteorological applications involving measurements at attenuating frequencies such as those at X band. The results of ...

Sergey Y. Matrosov; Patrick C. Kennedy; Robert Cifelli

2014-11-01T23:59:59.000Z

163

Primate Diet and Biomass in Relation to Vegetation Composition and Fruiting Phenology in a Rain Forest in Gabon  

Science Journals Connector (OSTI)

To test the hypothesis that primate populations are limited by food resources, we studied the feeding ecology of three cercopithecines and one colobine in a rain forest in central Gabon. Simultaneously, we monito...

David Brugiere; Jean-Pierre Gautier

2002-10-01T23:59:59.000Z

164

Characteristics of U.S. Extreme Rain Events during 19992003 RUSS S. SCHUMACHER AND RICHARD H. JOHNSON  

E-Print Network (OSTI)

. JOHNSON Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado (Manuscript-rain-producing weather systems are organized and the conditions in which they occur, Schumacher and Johnson (2005

Johnson, Richard H.

165

Evaluation of Statistical Rainfall Disaggregation Methods Using Rain-Gauge Information for West-Central Florida  

SciTech Connect

Rainfall disaggregation in time can be useful for the simulation of hydrologic systems and the prediction of floods and flash floods. Disaggregation of rainfall to timescales less than 1 h can be especially useful for small urbanized watershed study, and for continuous hydrologic simulations and when Hortonian or saturation-excess runoff dominates. However, the majority of rain gauges in any region record rainfall in daily time steps or, very often, hourly records have extensive missing data. Also, the convective nature of the rainfall can result in significant differences in the measured rainfall at nearby gauges. This study evaluates several statistical approaches for rainfall disaggregation which may be applicable using data from West-Central Florida, specifically from 1 h observations to 15 min records, and proposes new methodologies that have the potential to outperform existing approaches. Four approaches are examined. The first approach is an existing direct scaling method that utilizes observed 15 min rainfall at secondary rain gauges, to disaggregate observed 1 h rainfall at more numerous primary rain gauges. The second approach is an extension of an existing method for continuous rainfall disaggregation through statistical distributional assumptions. The third approach relies on artificial neural networks for the disaggregation process without sorting and the fourth approach extends the neural network methods through statistical preprocessing via new sorting and desorting schemes. The applicability and performance of these methods were evaluated using information from a fairly dense rain gauge network in West-Central Florida. Of the four methods compared, the sorted neural networks and the direct scaling method predicted peak rainfall magnitudes significantly better than the remaining techniques. The study also suggests that desorting algorithms would also be useful to randomly replace the artificial hyetograph within a rainfall period.

Murch, Renee Rokicki [Florida Department of Transportation; Zhang, Jing [University of South Florida; Ross, Mark [University of South Florida; Ganguly, Auroop R [ORNL; Nachabe, Mahmood [University of South Florida

2008-01-01T23:59:59.000Z

166

Beamfilling correction study for retrieval of oceanic rain from passive microwave observations  

E-Print Network (OSTI)

Constant in R-T relationship????????????.??..?.??. 6 2 Spatial resolution for each TMI channel?????????????... 7 3 ARMAR system parameters ?????????.????????... 13 4 The impact of path averaging on STD of rain rate ??????..??? 21 5... except for TMI 19 GHz channel ???????????. 8 3 Same as Fig. 1 except for TMI 10 GHz channel ..????????.??.. 8 4 Comparison between Chiu?s BCF formula and real data BCF calculations???????????????????????.??.. 10 5 ARMAR observational...

Chen, Ruiyue

2004-09-30T23:59:59.000Z

167

The red rain phenomenon of Kerala and its possible extraterrestrial origin  

E-Print Network (OSTI)

A red rain phenomenon occurred in Kerala, India starting from 25th July 2001, in which the rainwater appeared coloured in various localized places that are spread over a few hundred kilometers in Kerala. Maximum cases were reported during the first 10 days and isolated cases were found to occur for about 2 months. The striking red colouration of the rainwater was found to be due to the suspension of microscopic red particles having the appearance of biological cells. These particles have no similarity with usual desert dust. An estimated minimum quantity of 50,000 kg of red particles has fallen from the sky through red rain. An analysis of this strange phenomenon further shows that the conventional atmospheric transport processes like dust storms etc. cannot explain this phenomenon. The electron microscopic study of the red particles shows fine cell structure indicating their biological cell like nature. EDAX analysis shows that the major elements present in these cell like particles are carbon and oxygen. Strangely, a test for DNA using Ethidium Bromide dye fluorescence technique indicates absence of DNA in these cells. In the context of a suspected link between a meteor airburst event and the red rain, the possibility for the extraterrestrial origin of these particles from cometary fragments is discussed.

Godfrey Louis; A. Santhosh Kumar

2006-01-02T23:59:59.000Z

168

The Roles of Cloud Drop Effective Radius and LWP in Determining Rain Properties in Marine Stratocumulus  

SciTech Connect

Numerical simulations described in previous studies showed that adding cloud condensation nuclei to marine stratocumulus can prevent their breakup from closed into open cells. Additional analyses of the same simulations show that the suppression of rain is well described in terms of cloud drop effective radius (re). Rain is initiated when re near cloud top is around 12-14 um. Cloud water starts to get depleted when column-maximum rain intensity (Rmax) exceeds 0.1 mm h-1. This happens when cloud-top re reaches 14 um. Rmax is mostly less than 0.1 mm h-1 at re<14 um, regardless of the cloud water path, but increases rapidly when re exceeds 14 um. This is in agreement with recent aircraft observations and theoretical observations in convective clouds so that the mechanism is not limited to describing marine stratocumulus. These results support the hypothesis that the onset of significant precipitation is determined by the number of nucleated cloud drops and the height (H) above cloud base within the cloud that is required for cloud drops to reach re of 14 um. In turn, this can explain the conditions for initiation of significant drizzle and opening of closed cells providing the basis for a simple parameterization for GCMs that unifies the representation of both precipitating and non-precipitating clouds as well as the transition between them. Furthermore, satellite global observations of cloud depth (from base to top), and cloud top re can be used to derive and validate this parameterization.

Rosenfeld, Daniel; Wang, Hailong; Rasch, Philip J.

2012-07-04T23:59:59.000Z

169

Influence of rain on air-sea gas exchange: Lessons from a model ocean David T. Ho,1,2  

E-Print Network (OSTI)

Influence of rain on air-sea gas exchange: Lessons from a model ocean David T. Ho,1,2 Christopher J-sea gas exchange: Lessons from a model ocean, J. Geophys. Res., 109, C08S18, doi:10.1029/2003JC001806. 1; published 1 July 2004. [1] Rain has been shown to significantly enhance the rate of air-water gas exchange

Ho, David

170

General Working Principles of CH3NH3PbX3 Perovskite Solar Cells  

Science Journals Connector (OSTI)

General Working Principles of CH3NH3PbX3 Perovskite Solar Cells ... Organometal halide perovskite-based solar cells have recently realized large conversion efficiency over 15% showing great promise for a new large scale cost-competitive photovoltaic technology. ... Using impedance spectroscopy measurements we are able to separate the physical parameters of carrier transport and recombination in working devices of the two principal morphologies and compositions of perovskite solar cells, viz. ...

Victoria Gonzalez-Pedro; Emilio J. Juarez-Perez; Waode-Sukmawati Arsyad; Eva M. Barea; Francisco Fabregat-Santiago; Ivan Mora-Sero; Juan Bisquert

2014-01-07T23:59:59.000Z

171

Two Dimensional Polyamides Prepared From Unsaturated Carboxylic Acids And Amines.  

DOE Patents (OSTI)

A polyamide and a process for preparing the polyamide are disclosed. The process comprises reacting in a reaction mixture a monomer selected from unsaturated carboxylic acids, esters of unsaturated carboxylic acids, anhydrides of unsaturated carboxylic acids, and mixtures thereof, and a first amine to form an intermediate reaction product in the reaction mixture, wherein the first amine is selected from RR.sub.1 NH, RNH.sub.2, RR.sub.1 NH.sub.2.sup.+, RNH.sub.3.sup.+ and mixtures thereof, wherein R and R.sub.1 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, and reacting the intermediate reaction product and a second amine to form a polyamide, wherein the second amine is selected from R.sub.2 R.sub.3 NH, R.sub.2 NH.sub.2, R.sub.2 R.sub.3 NH.sub.2.sup.+, R.sub.2 NH.sub.3.sup.+ and mixtures thereof wherein R.sub.2 and R.sub.3 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, wherein multiple of the R, R.sub.1, R.sub.2, and R.sub.3 are in vertically aligned spaced relationship along a backbone formed by the polyamide. In one version of the invention, the monomer is selected from maleic anhydride, maleic acid esters, and mixtures thereof. In another version of the invention, the first amine is an alkylamine, such as tetradecylamine, and the second amine is a polyalkylene polyamine, such as pentaethylenehexamine. In yet another version of the invention, the first amine and the second amine are olefinic or acetylenic amines, such as the reaction products of an alkyldiamine and an acetylenic carboxylic acid. The first amine and the second amine may be the same or different depending on the desired polyamide polymer structure.

McDonald, William F. (Utica, OH); Huang, Zhi Heng (East Lansing, MI); Wright, Stacy C. (Lansing, MI); Danzig, Morris (Northbrook, IL); Taylor, Andrew C. (Ann Arbor, MI)

2002-07-17T23:59:59.000Z

172

Measurement and Modeling of Spatial NH3 Storage Distributions in a Commercial Small Port Cu Zeolite Urea SCR Catalyst  

Energy.gov (U.S. Department of Energy (DOE))

A modified Spaci-IR technique can measure transient NH3 and NOx concentrations; data have been used to calibrate and validate an SCR model, with good agreement between experiments and simulations.

173

SPECTROSCOPIC INVESTIGATION OF (NH4)2S TREATED GaSeTe FOR RADIATION DETECTOR APPLICATIONS  

SciTech Connect

The surface of the layered III-VI chalcogenide semiconductor GaSeTe was treated with (NH{sub 4}){sub 2}S at 60 C to modify the surface chemistry and determine the effect on transport properties. Room temperature photoluminescence (PL) measurements were used to assess the effect of the (NH{sub 4}){sub 2}S treatment on surface defect states. Evaluation of the subsequent surface chemistry was performed with high-resolution core-level photoemission measurements. Metal overlayers were deposited on the (NH{sub 4}){sub 2}S treated surfaces and the I-V characteristics were measured. The measurements were correlated to understand the effect of (NH{sub 4}){sub 2}S modification of the interfacial electronic structure with the goal of optimizing the metal/GaSeTe interface for radiation detector devices.

Nelson, A; Laurence, T; Conway, A; Behymer, E; Sturm, B; Voss, L; Nikolic, R; Payne, S; Mertiri, A; Pabst, G; Mandal, K; Burger, A

2009-08-04T23:59:59.000Z

174

Compliance with revised acid rain monitoring requirements for gas and oil fired units: Appendix D and E of Part 75  

SciTech Connect

EPA`s CEM rule (40 CFR Part 75) implements the monitoring provisions of Title IV of the Clean Air Act Amendments of 1990. In most cases Part 75 requires utilities to monitor sulfur dioxide (SO{sub 2}), nitrogen oxide (NO{sub x}) and carbon dioxide emissions (CO{sub 2}), and volumetric flow and opacity using Continuous Emissions Monitoring Systems (CEMS). Appendix D and E of 40 CFR Part 75 provide alternatives to using Continuous Emissions Monitoring Systems (CEMS) to comply with the monitoring requirements of Title IV of the Clean Air Act. EPA is considering a number of changes to Part 75, including significant changes to Appendix D and E. Part 75 was originally promulgated on January 11, 1993. Due to both experience gained in the implementation of Phase 1 and the early implementation of Phase 2 and petitions filed by several groups, EPA has prepared a number of changes to Part 75. This paper discusses what EPA anticipates these changes will be and how EPA anticipates that these changes will affect the regulated community. In addition, it discusses EPA`s expectations for certification applications for units using Appendix D and E.

Sheppard, M.; Culligan, K. [EPA, Washington, DC (United States). Acid Rain Div.

1995-12-31T23:59:59.000Z

175

Acidity deterioration and coke deposition in a HZSM5 zeolite in the MTG process  

Science Journals Connector (OSTI)

Summary The total acidity deterioration and the acidity strength distribution of a catalyst prepared from a H-ZSM-5 zeolite has been studied in the MTG process carried out in catalytic chamber and in an isothermal fixed bed integral reactor. The acidity deterioration has been related to coke deposition. The evolution of the acidic structure and of coke deposition has been analysed in situ by diffuse reflectance FTIR in a catalytic chamber. The effect of operating conditions (time on stream and temperature) on acidity deterioration, coke deposition and coke nature has been studied from experiments in a fixed integral reactor. The technique for studying acidity yields a reproducible measurement of total acidity and acidity strength distribution of the catalyst deactivated by coke. The NH3 adsorption-desorption is measured by combination of scanning differential calorimetry and the FTIR analysis of the products desorbed.

A.T. Aguayo; P.L. Benito; A.G. Gayubo; M. Olazar; J. Bilbao

1994-01-01T23:59:59.000Z

176

Diffusive and rotational dynamics of condensed n-H2 confined in MCM-41  

SciTech Connect

In this paper, we report an inelastic neutron scattering study of liquid and solid n-H2 confined within MCM-41. This is a high surface area, mesoporous silica glass with a narrow pore size distribution centered at 3.5 nm. The scattering data provides information about the diffusive and rotational dynamics of the adsorbed n-H2 at low temperatures. In the liquid state, the neutron scattering data demonstrates that only a fraction of the adsorbed o-H2 is mobile on the picosecond time scale. This mobile fraction undergoes liquid-like jump diffusion, and values for the residence time t and effective mean-squared displacement hu2i are reported as a function of pore filling. In the solid state, the rotational energy levels of adsorbed H2 are strongly perturbed from their free quantum rotor behavior in the bulk solid. The underlying orientational potential of the hindered rotors is due to the surface roughness and heterogeneity of the MCM-41 pore walls. This potential is compared to the hindering potential of other porous silicas, such as Vycor. Strong selective adsorption makes the interfacial layer rich in o-H2, leaving the inner core volume consisting of a depleted mixture of o-H2 and p-H2.

Prisk, Timothy R [ORNL; Bryan, Matthew [Indiana University; Sokol, Paul E [ORNL

2014-01-01T23:59:59.000Z

177

Climate change as a confounding factor in reversibility of acidification: RAIN and CLIMEX projects Hydrology and Earth System Sciences, 5(3), 477486 (2001) EGS  

E-Print Network (OSTI)

Climate change as a confounding factor in reversibility of acidification: RAIN and CLIMEX projects to the roofed structure and a climate change manipulation (CLIMEX project) was superimposed on the clean rain 477 Hydrology and Earth System Sciences, 5(3), 477­486 (2001) © EGS Climate change as a confounding

Paris-Sud XI, Université de

178

Rain Garden construction in Monmouth County has accelerated consid-erably since the early planning days in 2003 with our local Watershed  

E-Print Network (OSTI)

and shore tour- ism industry came from people pollution Sunny Days for Rain Gardens -- Progress towardsRain Garden construction in Monmouth County has accelerated consid- erably since the early planning, Issue 3 August 2012 newsletternewsletter News of Environmental and Resource Management Issues and Events

Goodman, Robert M.

179

Changes in Tropical Rainfall Measuring Mission (TRMM) retrievals due to the orbit boost estimated from rain gauge data  

E-Print Network (OSTI)

-boost period and ~1.5% low during the post-boost period. The mean change in bias relative to the gauges is approximately 0.4 mm day^-1. The PR is biased significantly low relative to the gauges during both boost periods. The change in bias is rain rate...

DeMoss, Jeremy

2009-06-02T23:59:59.000Z

180

Week 4, Rain in my Brain On top of the Harbor Cone, Otago Peninsula, Pacific Ocean in the distance.  

E-Print Network (OSTI)

Week 4, Rain in my Brain On top of the Harbor Cone, Otago Peninsula, Pacific Ocean in the distance of the ocean or of this beautiful city from on-high and it all comes back that we're here, a dream come true

Bardsley, John

Note: This page contains sample records for the topic "nh acid rain" 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

Raindrop Size Distributions and Rain Characteristics in California Coastal Rainfall for Periods with and without a Radar Bright Band  

E-Print Network (OSTI)

S-band profiling radars showed that coastal winter storms in California and Oregon frequently do sites in northern California were revisited in the winter of 2003/04 in this study, which extends significant. Liquid water contents differ very little, however, for the two rain types. Dis- drometer

Yuter, Sandra

182

A Cloud-Patch Technique for Identification and Removal of No-Rain Clouds from Satellite Infrared Imagery  

Science Journals Connector (OSTI)

A new cloud-patch method for the identification and removal of no-rain cold clouds from infrared (IR) imagery is presented. A cloud patch is defined as a cluster of connected IR imagery pixels that are colder than a given IR brightness ...

Liming Xu; Soroosh Sorooshian; Xiaogang Gao; Hoshin V. Gupta

1999-08-01T23:59:59.000Z

183

DOE/SC-ARM/TR-079 Disdrometer and Tipping Bucket Rain Gauge  

NLE Websites -- All DOE Office Websites (Extended Search)

Disdrometer and Tipping Bucket Rain Gauge Handbook MJ Bartholomew December 2009 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and

184

Microsoft PowerPoint - 16.0855_Raines Draft Rev 4  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Management Update Management Update Project Management Update Bob Raines Director, Project Management Systems and Assessments * Everybody's Favorite Subject Cost Estimating * Cost Estimating * EVMS * Metrics * Take Aways Agenda 2 Agenda * Ahead of Schedule On Budget - S-2's Stretch Goal 177 Projects $92B TPC - 177 Projects, $92B TPC * Front End Planning - User Acceptance Testing - Comprehensive Training - System Documentation - Capacity/Throughput Testing Capacity/Throughput Testing - Communications via ESC * Thank You For Your Support! * Ensure New Contracts Include PARS II Requirement PARS II Everyone's Favorite Subject 3 PARS II : Everyone s Favorite Subject * DOE is Taking Advantage of PARS II Taking Advantage of PARS II Taking Advantage of PARS II Taking Advantage of PARS II - SC is Using PARS II For an IT Project

185

Two-photon optical pumping of NH/sub 3/ in a multipass cell  

SciTech Connect

A multipass cell was used in optical pumping of ammonia molecules by CO/sub 2/ laser radiation. Several new lasing lines were observed in the case of two-photon optical pumping of the NH/sub 3/ molecule at wavelengths in the range 16--35 ..mu... The output power of the various lines was in the range 10--50 kW. The divergence of the resultant radiation was diffraction-limited. A theoretical study was made of the two-photon pumping process. A stable (on the frequency scale) maximum was found in the gain profile of the output radiation. It was concluded that it should be possible to increase the energy and extend the emission spectrum of an ammonia laser pumped by double-photon absorption.

Bobrovskii, A.N.; Kiselev, V.P.; Kozhevnikov, A.V.; Likhanskii, V.V.; Mishchenko, V.A.; Myl'nikov, G.D.

1983-11-01T23:59:59.000Z

186

Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3  

E-Print Network (OSTI)

Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3 A.Bonfils , Y. Creff for an automotive selective catalytic reduction (SCR) system, for which the feedback is based on a NOx sensor the variety of en- countered technologies, selective catalytic reduction (SCR) is one of the most appealing

187

Adapted from laboratory protocols of the Center for Freshwater Biology, University of New Hampshire, Durham, N.H. 2010  

E-Print Network (OSTI)

, Durham, N.H. 2010 UNH CFB Protocol for the Monitoring of Cyanobacteria & Microcystins in Drinking Water delivery to UNH CFB lab. 5. Freeze the sample if delivery/ drop-off time exceeds 12 hours. Analyses: a, Quantiplate-ELISA Kit, (Portland, Me) with increased sensitivity (UNH, CFB). Results will be reported as ng

New Hampshire, University of

188

Effects of \\{NH4Cl\\} and MgCl2 on pretreatment and xylan hydrolysis of miscanthus straw  

Science Journals Connector (OSTI)

This study investigated the effects of \\{NH4Cl\\} and MgCl2 on pretreatment and xylan hydrolysis of miscanthus straw for biofuels production. It was observed that increasing the pretreatment temperature decreased the remaining solid, increased the enzymatic digestibility, and increased the xylan removal. When 0.25.0% \\{NH4Cl\\} and MgCl2 were employed in pretreatments, increasing the inorganic salt concentration slightly diminished the remaining solid, though the enzymatic digestibility was enhanced. Under the higher-than-2% condition, no xylan remained in the solid residues after pretreatment. With pretreatment time, the remaining solid slightly decreased, but the enzymatic digestibility was increased. Moreover, xylan removal was linearly increased to 15min, after which it was completely hydrolyzed. Overall, these results indicated that pretreatment by 2% \\{NH4Cl\\} or MgCl2 at 185C for 15min completely hydrolyzes the xylan of miscanthus straw. In scanning electron microscopy (SEM) images, the physical surface of the miscanthus straw showed an apparently damaged surface area and exposure of the internal structure after pretreatment with \\{NH4Cl\\} and MgCl2 by SEM.

Kyeong Eop Kang; Don-Hee Park; Gwi-Taek Jeong

2013-01-01T23:59:59.000Z

189

Coal ash as an absorbent to remove SO2, and its activity change in NO?NH3 reaction  

Science Journals Connector (OSTI)

After being activated with NaOH aqueous solution, coal ash showed a maximal sorption capacity of about...3 SO2/g ash. Catalytic activity of coal ash for the NO?NH3 reaction was gradually depressed by the presence...

F. Nozaki; O. Watanabe; T. Sodesawa

1984-01-01T23:59:59.000Z

190

Presented in Lee and Concord, NH by the UNHCE Geospatial Outreach Program ArcGIS Workshops Winter 2013  

E-Print Network (OSTI)

, 9am to 4pm January 17, 2013 Lee, NH Topics covered: ArcGIS 10.1 Exploring GIS maps Basic GIS: ArcGIS 10 Creating GIS maps.1 GIS techniques GIS data maintenance $495 standard, $349 reduced Skill.1 to produce effective maps, edit and create GIS data, as well as, conduct geospatial analysis. Participants

New Hampshire, University of

191

An AlGaAsGaAs quantum cascade laser operating with a thermoelectric cooler for spectroscopy of NH3  

E-Print Network (OSTI)

out using a compact thermo-electrically cooled laser package. The QCL described here is designedAn AlGaAs­GaAs quantum cascade laser operating with a thermoelectric cooler for spectroscopy of NH3. Langford b a Department of Electronics and Electrical Engineering, Rankine Building, University of Glasgow

192

Selective catalytic reduction of NO by NH3 on titanium pillared montmorillonite  

Science Journals Connector (OSTI)

The acidity of a titanium pillared montmorillonite (Ti-PILC) has been modified by two methods of...3 with or without SO2 has been investigated. For the three titanium pillared clays, a high resistance to SO2 pres...

H. L. del Castillo; A. Gil; P. Grange

1996-01-01T23:59:59.000Z

193

Thermochemical treatments based on NH3/O2 for improved graphite-based fiber electrodes in vanadium redox flow batteries  

Science Journals Connector (OSTI)

Abstract Electrochemical behavior of the polyacrylonitrile (PAN)-based graphite as a low cost electrode material for vanadium based redox batteries (VFB) in sulfuric acid medium has been improved by means of the successful introduction of nitrogen and oxygen-containing groups at the graphite surface by thermal activation under NH3/O2 (1:1) atmosphere. Influence of the temperature and treatment duration times have been studied towards the positive reaction of VFB. The structure, composition, and electrochemical properties of the treated samples have been characterized with field emission scanning electron microscopy, X-ray photoelectron spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The estimation of electrochemical surface area has also been evaluated. The treatment of PAN graphite material at 773K for 24-h leads to electrode materials with the best electrochemical activity towards the VO 2 + /VO2+ redox couple. This method produces an increase of the nitrogen and oxygen content at the surface up to 8% and 32%, respectively, and is proved to be a straightforward and cost-effective methodology. This improvement of the electrochemical properties is attributed to the incorporation of the nitrogen and oxygen-containing groups that facilitate the electron transfer through the electrode/electrolyte interface for both oxidation and reduction processes.

Cristina Flox; Javier Rubio-Garca; Marcel Skoumal; Teresa Andreu; Juan Ramn Morante

2013-01-01T23:59:59.000Z

194

Chemical analysis of HfO{sub 2}/Si (100) film systems exposed to NH{sub 3} thermal processing  

SciTech Connect

Nitrogen incorporation in HfO{sub 2}/SiO{sub 2} films utilized as high-k gate dielectric layers in advanced metal-oxide-semiconductor field effect transistors has been investigated. Thin HfO{sub 2} blanket films deposited by atomic layer deposition on either SiO{sub 2} or NH{sub 3} treated Si (100) substrates have been subjected to NH{sub 3} and N{sub 2} anneal processing. Several high resolution techniques including electron microscopy with electron energy loss spectra, grazing incidence x-ray diffraction, and synchrotron x-ray photoelectron spectroscopy have been utilized to elucidate chemical composition and crystalline structure differences between samples annealed in NH{sub 3} and N{sub 2} ambients as a function of temperature. Depth profiling of core level binding energy spectra has been obtained by using variable kinetic energy x-ray photoelectron spectroscopy with tunable photon energy. An 'interface effect' characterized by a shift of the Si{sup 4+} feature to lower binding energy at the HfO{sub 2}/SiO{sub 2} interface has been detected in the Si 1s spectra; however, no corresponding chemical state change has been observed in the Hf 4f spectra acquired over a broad range of electron take-off angles and surface sensitivities. The Si 2p spectra indicate Si-N bond formation beneath the HfO{sub 2} layer in the samples exposed to NH{sub 3} anneal. The NH{sub 3} anneal ambient is shown to produce a metastable Hf-N bond component corresponding to temperature driven dissociation kinetics. These findings are consistent with elemental profiles across the HfO{sub 2}/Si(100) interface determined by electron energy loss spectroscopy measurements. X-ray diffraction measurements on similarly treated films identify the structural changes resulting from N incorporation into the HfO{sub 2} films.

Lysaght, Patrick S.; Barnett, Joel; Bersuker, Gennadi I.; Woicik, Joseph C.; Fischer, Daniel A.; Foran, Brendan; Tseng, Hsing-Huang; Jammy, Raj [Front End Process Division, SEMATECH, 2706 Montopolis Drive, Austin, Texas 78741-6499 (United States); National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Physical Characterization Laboratory, Advanced Technology Development Facility, 2706 Montopolis Drive, Austin, Texas 78741-6499 (United States); Front End Process Division, SEMATECH, 2706 Montopolis Drive, Austin, Texas 78741-6499 (United States)

2007-01-15T23:59:59.000Z

195

Measurements of NH3 and CO2 with distributed-feedback diode lasers near 2.0 m in bioreactor vent gases  

E-Print Network (OSTI)

absorption transition at 5016.977 cm 1 was selected for trace gas monitoring. For CO2, an isolated transition of a diode-laser sensor used to record gas-phase NH3 and CO2 mole fractions, ex- plain the motivation for NH3 and 40 ppm for CO2, which is suitable for the expected vent gas concentrations. 2. Theory

196

Intramolecular Hydrogen Bonding in Disubstituted Ethanes. A Comparison of NH,,,O-and OH,,,O-Hydrogen Bonding through Conformational Analysis of 4-Amino-4-oxobutanoate  

E-Print Network (OSTI)

Intramolecular Hydrogen Bonding in Disubstituted Ethanes. A Comparison of NH,,,O- and OH,,,O- Hydrogen Bonding through Conformational Analysis of 4-Amino-4-oxobutanoate (succinamate) and Monohydrogen 1 of amide NH,,,O- and carboxyl OH,,,O- hydrogen bonds were investigated via conformational analysis

Goddard III, William A.

197

Effects of Hydrothermal Aging on NH3-SCR reaction over Cu/zeolites  

SciTech Connect

The effects of hydrothermal treatment on model Cu/zeolite catalysts were investigated to better understand the nature of Cu species for the selective catalytic reduction of NO{sub x} by NH{sub 3}. After hydrothermal aging at 800 C for 16 h, the NO{sub x} reduction performance of Cu-ZSM-5 and Cu-beta were significantly reduced at low temperatures, while that of Cu-SSZ-13 was not affected. When the zeolite framework aluminum species were probed using solid state {sup 27}Al-NMR, significant reduction in the intensities of the tetrahedral aluminum peak was observed for Cu-ZSM-5 and Cu-beta, although no increase in the intensities of the octahedral aluminum peak was observed. When the redox behavior of Cu species was examined using H{sub 2}-TPR, it was found that Cu{sup 2+} could be reduced to Cu{sup +} and to Cu{sup 0} fir Cu-ZSM-5 and Cu-beta catalysts, while Cu{sup 2+} could be reduced to Cu{sup +} only for Cu-SSZ-13. After hydrothermal aging, CuO and Cu-aluminate species were found to form in Cu-ZSM-5 and Cu-beta, while little changes were observed for Cu-SSZ-13.

Kwak, Ja Hun; Tran, Diana N.; Burton, Sarah D.; Szanyi, Janos; Lee, Jong H.; Peden, Charles HF

2012-02-06T23:59:59.000Z

198

Validation and Development of Melting Layer Models Using Constraints by Active/Passive Microwave Observations of Rain and the Wind-Roughened Ocean Surface  

Science Journals Connector (OSTI)

A physically based method is developed to estimate the microphysical structure of the melting layer in stratiform rain using airborne observations by a dual-frequency radar and a 10.7-GHz radiometer. The method employs a nonlinear optimal ...

Shannon T. Brown; Christopher S. Ruf

2007-04-01T23:59:59.000Z

199

Satellite Data Assimilation in Numerical Weather Prediction Models. Part II: Uses of Rain-Affected Radiances from Microwave Observations for Hurricane Vortex Analysis  

Science Journals Connector (OSTI)

A hybrid variational scheme (HVAR) is developed to produce the vortex analysis associated with tropical storms. This scheme allows for direct assimilation of rain-affected radiances from satellite microwave instruments. In the HVAR, the ...

Fuzhong Weng; Tong Zhu; Banghua Yan

2007-11-01T23:59:59.000Z

200

Synoptic-Scale Environments of Predecessor Rain Events Occurring East of the Rocky Mountains in Association with Atlantic Basin Tropical Cyclones  

Science Journals Connector (OSTI)

The synoptic-scale environments of predecessor rain events (PREs) occurring to the east of the Rocky Mountains in association with Atlantic basin tropical cyclones (TCs) are examined. PREs that occurred during 19882010 are subjectively classified ...

Benjamin J. Moore; Lance F. Bosart; Daniel Keyser; Michael L. Jurewicz

2013-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Current and Future Carbon Budgets of Tropical Rain Forest: A Cross Scale Analysis. Final Report  

SciTech Connect

The goal of this project was to make a first assessment of the major carbon stocks and fluxes and their climatic determinants in a lowland neotropical rain forest, the La Selva Biological Station, Costa Rica. Our research design was based on the concurrent use of several of the best available approaches, so that data could be cross-validated. A major focus of our effort was to combine meteorological studies of whole-forest carbon exchange (eddy flux), with parallel independent measurements of key components of the forest carbon budget. The eddy flux system operated from February 1998 to February 2001. To obtain field data that could be scaled up to the landscape level, we monitored carbon stocks, net primary productivity components including tree growth and mortality, litterfall, woody debris production, root biomass, and soil respiration in a series of replicated plots stratified across the major environmental gradients of the forest. A second major focus of this project was on the stocks and changes of carbon in the soil. We used isotope studies and intensive monitoring to investigate soil organic stocks and the climate-driven variation of soil respiration down the soil profile, in a set of six 4m deep soil shafts stratified across the landscape. We measured short term tree growth, climate responses of sap flow, and phenology in a suite of ten canopy trees to develop individual models of tree growth to daytime weather variables.

Oberbauer, S. F.

2004-01-16T23:59:59.000Z

202

nh Gi Thit Hi Ti Nguyn Thin Nhin ca V Trn Du Deepwater Horizon Cc D n Khu Vc  

E-Print Network (OSTI)

Lng Sò ip Nhm Tng C Hi ánh Bt Gii Trí Trong Vùng Cán Xong Florida s c thc hin Qun Bay (h thng Vnh St Okaloosa và Walton. Lý tng ra thì bng cách thc hin d án này,s lng sò ip ti các a im c can thip cui cùng có th s tng lên ti các mc t duy trì bn vng c cho vic ánh bt gii trí. S lng sò ip các Qun Gulf và

203

Electronic Structure of TiO2/CH3NH3PbI3 Perovskite Solar Cell Interfaces  

Science Journals Connector (OSTI)

The last two decades, the research on different types of mesoscopic solar cells has grown enormously, largely because this family of solar cells can be controlled in many different ways and for their easy production. ... Recently, the use of soluble semiconductors such as organicinorganic perovskites has shown great promise as light absorbers in solid-state mesoscopic solar cells. ... We report for the first time on a hole conductor-free mesoscopic methylammonium lead iodide (CH3NH3PbI3) perovskite/TiO2 heterojunction solar cell, produced by deposition of perovskite nanoparticles from a soln. of CH3NH3I and PbI2 in ?-butyrolactone on a 400 nm thick film of TiO2 (anatase) nanosheets exposing (001) facets. ...

Rebecka Lindblad; Dongqin Bi; Byung-wook Park; Johan Oscarsson; Mihaela Gorgoi; Hans Siegbahn; Michael Odelius; Erik M. J. Johansson; Hkan Rensmo

2014-01-24T23:59:59.000Z

204

National Acid Precipitation Assessment Program Report to Congress: An Integrated Assessment  

SciTech Connect

Under Title IX of the 1990 Clean Air Act Amendments, Congress reauthorized the National Acid Precipitation Assessment Program (NAPAP) to continue coordinating acid rain research and monitoring, as it had done during the previous decade, and to provide Congress with periodic reports. In particular, Congress asked NAPAP to assess all available data and information to answer two questions: (1) What are the costs, benefits, and effectiveness of Title IV? This question addresses the costs and economic impacts of complying with the Acid Rain Program as well as benefit analyses associated with the various human health and welfare effects, including reduced visibility, damages to materials and cultural resources, and effects on ecosystems. (2) What reductions in deposition rates are needed to prevent adverse ecological effects? This complex questions addresses ecological systems and the deposition levels at which they experience harmful effects. The results of the assessment of the effects of Title IV and of the relationship between acid deposition rates and ecological effects were to be reported to Congress quadrennially, beginning with the 1996 report to Congress. The objective of this Report is to address the two main questions posed by Congress and fully communicate the results of the assessment to decision-makers. Given the primary audience, most of this report is not written as a technical document, although information supporting the conclusions is provided along with references.

Uhart, M.; et al,

2005-08-01T23:59:59.000Z

205

DRIFT study of manganese/titania-based catalysts for low-temperature selective catalytic reduction of NO with NH{sub 3}  

SciTech Connect

Manganese oxides and iron-manganese oxides supported on TiO{sub 2} were prepared by the sol-gel method and used for low-temperature selective catalytic reduction (SCR) of NO with NH{sub 3}. Based on the previous study, Mn(0.4)/TiO{sub 2} and Fe(0.1)-Mn(0.4)/TiO{sub 2} were then selected to carry out the in situ diffuse reflectance infrared transform spectroscopy (DRIFT) investigation for revealing the reaction mechanism. The DRIFT spectroscopy for the adsorption of NH{sub 3} indicated the presence of coordinated NH{sub 3} and NH{sub 4}{sup +} on both of the two catalysts. When NO was introduced, the coordinated NH{sub 3} on the catalyst surface was consumed rapidly, indicating these species could react with NO effectively. When NH{sub 3} was introduced into the sample preadsorbed with NO + O{sub 2}, SCR reaction would not proceed on Mn(0.4)/TiO{sub 2}. However, for Fe(0.1)-Mn(0.4)/TiO{sub 2} the bands due to coordinated NH{sub 3} on Fe{sub 2}O{sub 3} were formed. Simultaneously, the bidentate nitrates were transformed to monodentate nitrates and NH{sub 4}{sup +} was detected. NO{sub 2} from the oxidation of NO on catalyst could react with NH{sub 4}{sup +} leading to the reduction of NO. Therefore, it was suggested that the SCR reaction on Fe(0.1)-Mn(0.4)/TiO{sub 2} could also take place in a different way from the reactions on Mn(0.4)/TiO{sub 2} proposed by other researchers. Furthermore, the SCR reaction steps for these two kinds of catalysts were proposed. 29 refs., 9 figs.

Zhongbiao Wu; Boqiong Jiang; Yue Liu; Haiqiang Wang; Ruiben Jin [Zhejiang University, Hangzhou (China). Dept. of Environmental Engineering

2007-08-15T23:59:59.000Z

206

Pd and PdAg Nanoparticles within a Macroreticular Basic Resin: An Efficient Catalyst for Hydrogen Production from Formic Acid Decomposition  

Science Journals Connector (OSTI)

Pd and PdAg Nanoparticles within a Macroreticular Basic Resin: An Efficient Catalyst for Hydrogen Production from Formic Acid Decomposition ... Palladium nanoparticles were immobilized within the pores of metal organic frameworks MIL-125 and amine-functionalized NH2-MIL-125 using photoassisted and ion exchange deposition methods. ...

Kohsuke Mori; Masahiro Dojo; Hiromi Yamashita

2013-04-15T23:59:59.000Z

207

Supporting Information Electric Field Reversal of Na2SO4, (NH4)2SO4, and Na2CO3 relative to CaCl2  

E-Print Network (OSTI)

water 1 M Na2 CO3 1 M Na2 SO4 1 M (NH4 )2 SO4 2 M CaCl2 2 M NaCl Re (2) (a.u.) Incident Infrared (cm -1.8 M CaCl2, 1.8 M NaCl, 1.1 M Na2CO3, 1.1 M Na2SO4, and 1.1 M (NH4)2SO4 salt solutions. ExperimentalS1 Supporting Information Electric Field Reversal of Na2SO4, (NH4)2SO4, and Na2CO3 relative to CaCl

208

Time-Resolved XAFS Spectroscopic Studies of B-H and N-H Oxidative Addition to Transition Metal Catalysts Relevant to Hydrogen Storage  

SciTech Connect

Successful catalytic dehydrogenation of aminoborane, H3NBH3, prompted questions as to the potential role of N-H oxidative addition in the mechanisms of these processes. N-H oxidative addition reactions are rare, and in all cases appear to involve initial dative bonding to the metal by the amine lone pairs followed by transfer of a proton to the basic metal. Aminoborane and its trimethylborane derivative block this mechanism and, in principle, should permit authentic N-H oxidative attrition to occur. Extensive experimental work failed to confirm this hypothesis. In all cases either B-H complexation or oxidative addition of solvent C-H bonds dominate the chemistry.

Bitterwolf, Thomas E. [University of Idaho

2014-12-09T23:59:59.000Z

209

The discovery of [Ru(NH3)5N2]2+: A case of serendipity and the scientific method  

Science Journals Connector (OSTI)

In this paper the author provides a personal account of the events leading up to the realization [Ru9NH3)5N2]2+ is a real species.

Caesar V. Senoff

1990-01-01T23:59:59.000Z

210

Experimental trial of a hollow-core waveguide used as an absorption cell for concentration measurement of NH3 gas with a CO2 laser  

Science Journals Connector (OSTI)

The basic idea of using a hollow-core waveguide as an absorption cell in a spectroscopic gas measurement system is proposed. Measurements of NH3 gas concentration were made...

Saito, Yasunori; Kanaya, Tatsunori; Nomura, Akio; Kano, Tetsuo

1993-01-01T23:59:59.000Z

211

Supporting Information Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3,  

E-Print Network (OSTI)

S1 Supporting Information Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3 interfaces of (a) 1.0 M and 2.0 M LiNO3, (b) 1.0 M and 1.7 M NaNO3, (c) 1.0 M and 1.6 M NH4NO3, and (d) 1.0 M water 1.0 M NaNO3 1.7 M NaNO3 c water 1.0 M NH4 NO3 1.6 M NH4 NO3 | (2) | 2 (10 3 arb.units) Wavenumber

212

.Research Module: Scheme 2. N-Benzylation of N-H Pyrazolidinones 3. 3 6. 60 Scheme 2 Procedure: N-Alkylation Using Aldehyde  

E-Print Network (OSTI)

folder. It will actually produce two NMR printouts for you. The first one will be dominated by methanol Scheme 1, add 10 mL of anhydrous methanol. · For 4-methoxy compoud 3c, add 20 mL of methanol, since the 4-Benzylation Synthesis of N-Benzyl Pyrazolidinones NH NH O R1 3a-e + H O 4 Methanol Solvent 0.05 CF3CO2H (catalyst) N N O

Jasperse, Craig P.

213

Synthesis of iron oxides and the influence of organic acids on the resolubilization of iron minerals  

E-Print Network (OSTI)

of Organ1c Acids on the Resolubi1 izat1on of Iron M1neral s. (May 1984) Er1c Thacher Clarke, B. A. , Southwestern University Chairman of Advisory Committee: Dr. Richard H. Loeppert Equilibrium Fe concentrat1ons of calcareous soil are readily... and reducing agents, buffered in 1. 0 N NH4 acetate at pH 3. 5 and 4. 75, Dissolution rate in oxalic acid decreased in the following order: ferrihydrite, lep1docroc1te, and goeth1te. Rate of Fe ox1de dissolution 1n the presence of com- plexing and reducing...

Clarke, Eric Thacher

2012-06-07T23:59:59.000Z

214

Theory of Hydride-Proton Transfer (HPT) Carbonyl Reduction by [Os(III)(tpy)(Cl)(NH=CHCH3)(NSAr)  

SciTech Connect

Quantum mechanical analysis reveals that carbonyl reduction of aldehydes and ketones by the imine-based reductant cis-[Os{sup III}(tpy)(Cl)(NH?CHCH{sub 3})(NSAr)] (2), which is accessible by reduction of the analogous nitrile, occurs by hydride-proton transfer (HPT) involving both the imine and sulfilimido ligands. In carbonyl reduction, water or alcohol is necessary to significantly lower the barrier for proton shuttling between ligands. The ?N(H)SAr group activates the carbonyl group through hydrogen bonding while the ?NC(H)CH{sub 3} ligand delivers the hydride.

Ess, Daniel H.; Schauer, Cynthia; Meyer, Thomas J.

2010-01-01T23:59:59.000Z

215

Exergy analysis of a novel air-cooled non-adiabatic absorption refrigeration cycle with NH3NaSCN and NH3LiNO3 refrigerant solutions  

Science Journals Connector (OSTI)

Abstract This paper presents a methodology of exergy analysis for ammonia-lithium nitrate and ammonia-sodium thiocyanate absorption refrigeration cycle which applies a novel air-cooled type non-adiabatic absorber to improve both the coefficient of performance and exegetic efficiency of the system under air cooling condition. A modified entropy calculation method for NH3/NaSCN and NH3/LiNO3 solutions is presented in this literature and different results are obtained comparing to previous research. In addition to the variation of solution temperature and pressure from specific working state to the reference state, the variation of solution concentration, which was always neglected by previous researchers in ammonia/salt solution exergy calculation, has been taken into account while analyzing the least potential of ammonia/salt solution for doing useful work, and a corresponding approach for specific exergy calculation is presented. The effects of generator temperature, absorber outlet temperature, absorber efficiency and other system parameters on system exergetic efficiency have been discussed in this study. Analysis results indicate that relatively high system performance can be obtained by air-cooled type ammonia/salt absorption refrigeration cycles when non-adiabatic absorbers are applied in these systems.

Dehua Cai; Guogeng He; Qiqi Tian; Weier Tang

2014-01-01T23:59:59.000Z

216

Absolute measurements of nitric acid by kilometer pathlength FT-IR (Fourier transform infrared) spectroscopy and their intercomparison with other measurement methods. Final report  

SciTech Connect

Measurements of ambient nitric acid (HNO/sub 3/) and ammonia (NH/sub 3/) concentrations were conducted using a Fourier transform infrared (FT-IR) spectrometer interfaced to an open-path, multiple-reflection optical system. These measurements provided benchmark data for gaseous HNO/sub 3/ and NH/sub 3/ during a field study, held at Claremont, California, September 11-19, 1985, which compared current analytical methods for determining nitrogenous species concentrations in the atmosphere. Hourly average concentrations of HNO/sub 3/ and NH/sub 3/ are reported, along with the calculated average concentrations for the sampling periods designated for the majority of the other measurement methods.

Winer, A.M.; Tuazon, E.C.; Biermann, H.W.; Wallington, T.J.

1986-05-01T23:59:59.000Z

217

Microbial Fuel Cells -Solar Times http://solar.rain-barrel.net/microbial-fuel-cells/ 1 of 3 6/28/2006 11:32 AM  

E-Print Network (OSTI)

.com Hydrogen Fuel Cells Buy Commercial & Educational Stacks PEM, Fuel Cell Generators & More! www.TheHydrogenCompany.com Hydrogen Fuel Cell Improve Your Fuel Economy 20 to 50% Begin Saving Fuel Now www.SaveMoreWithHydrogenMicrobial Fuel Cells - Solar Times http://solar.rain-barrel.net/microbial-fuel-cells/ 1 of 3 6

Lovley, Derek

218

Fatty acid analogs  

DOE Patents (OSTI)

In one aspect, a radioactively labeled analog of a fatty acid which is capable of being taken up by mammalian tissue and which exhibits an in vivo beta-oxidation rate below that with a corresponding radioactively labeled fatty acid.

Elmaleh, David R. (Newton Center, MA); Livni, Eli (Brookline, MA)

1985-01-01T23:59:59.000Z

219

Environmental radiological monitoring of air, rain, and snow on and near the Hanford Site, 1945-1957  

SciTech Connect

This report is a result of the Hanford Environmental Dose Reconstruction (HEDR) Project. The goal of the HEDR Project is to estimate the radiation dose that individuals could have received from emissions since 1944 at the Hanford Site near Richland, Washington. Members of the HEDR Project`s Environmental Monitoring Data Task have developed databases of historical environmental measurements of such emissions. Hanford documents were searched for information on the radiological monitoring of air, rain, and snow at and near the Hanford Site in Richland, Washington. The monitoring information was reviewed and summarized. The end product is a yearly overview of air, rain, and snow samples as well as ambient radiation levels in the air that were measured from 1945 through 1957. The following information is provided in each annual summary: the media sampled, the constituents (radionuclides) measured/reported, the sampling locations, the sampling frequencies, the sampling methods, and the document references. For some years a notes category is included that contains additional useful information. For the years 1948 through 1957, tables summarizing the sampling locations for the various sample media are also included in the appendix. A large number of documents were reviewed to obtain the information in this report. A reference list is attached to the end of each annual summary. All of the information summarized here was obtained from reports originating at Hanford. These reports are all publicly available and can be found in the Richland Operations Office (RL) public reading room. The information in this report has been compiled without analysis and should only be used as a guide to the original documents.

Hanf, R.W.; Thiede, M.E.

1994-03-01T23:59:59.000Z

220

4D Density Determination of NH Radicals in an MSE Microplasma Combining Planar Laser Induced Fluorescence and Cavity Ring-Down Spectroscopy  

SciTech Connect

An application of microplasmas is surface modification under mild conditions and of small, well defined areas. For this, an understanding of the plasma composition is of importance. First results of our work on the production and detection of NH radicals in a capacitively coupled radio frequency (RF) microplasma are presented. A microstructured comb electrode was used to generate a glow discharge in a hydrogen/nitrogen gas mixture by applying 13.56 MHz RF voltage. The techniques of planar laser induced fluorescence (PLIF) and cavity ring-down spectroscopy (CRDS) are used for space and time resolved, quantitative detection of the NH radical in the plasma. The rotational temperature was determined to be 820 K and, the density 5.1x10{sup 12} cm{sup 3}. Also, time dependent behaviour of the NH production was observed.

Visser, Martin; Schenk, Andreas; Gericke, Karl-Heinz [Technische Universitaet Braunschweig, Institut fuer Physikalische und Theoretische Chemie Hans-Sommer-Str. 10, 38106 Braunschweig (Germany)

2010-10-13T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Unusual defect physics in CH{sub 3}NH{sub 3}PbI{sub 3} perovskite solar cell absorber  

SciTech Connect

Thin-film solar cells based on Methylammonium triiodideplumbate (CH{sub 3}NH{sub 3}PbI{sub 3}) halide perovskites have recently shown remarkable performance. First-principle calculations show that CH{sub 3}NH{sub 3}PbI{sub 3} has unusual defect physics: (i) Different from common p-type thin-film solar cell absorbers, it exhibits flexible conductivity from good p-type, intrinsic to good n-type depending on the growth conditions; (ii) Dominant intrinsic defects create only shallow levels, which partially explain the long electron-hole diffusion length and high open-circuit voltage in solar cell. The unusual defect properties can be attributed to the strong Pb lone-pair s orbital and I p orbital antibonding coupling and the high ionicity of CH{sub 3}NH{sub 3}PbI{sub 3}.

Yin, Wan-Jian, E-mail: wanjian.yin@utoledo.edu; Shi, Tingting; Yan, Yanfa, E-mail: yanfa.yan@utoledo.edu [Department of Physics and Astronomy and Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, Ohio 43606 (United States)

2014-02-10T23:59:59.000Z

222

NOIlVUlSININdV NOIlVWdOdNI AOd3N3 ACTO3NH  

Gasoline and Diesel Fuel Update (EIA)

NOIlVUlSININdV NOIlVWdOdNI AOd3N3 NOIlVUlSININdV NOIlVWdOdNI AOd3N3 ACTO3NH 0661 This publication may be purchased from the Superintendent of Documents, U.S. Government Printing Office. Purchasing in formation for this or other Energy Information Administration (EIA) publications may be obtained from the Government Printing Office or ElA's National Energy Information Center. Questions on energy statistics should be directed to the Center by mail, telephone, or telecommunications device for the hearing impaired. Addresses, telephone numbers, and hours are as follows: National Energy Information Center Energy Information Administration Forrestal Building, Room 1F-048 Washington, DC 20585 (202) 586-8800 Telecommunications Device for the Hearing Impaired Only: (202) 586-1181 8 a.m. - 5 p.m., eastern time, M-F

223

nh Gi Thit Hi Ti Nguyn Thin Nhin ca V Trn Du Deepwater Horizon Cc D n Qun Franklin  

E-Print Network (OSTI)

Công Viên Bald Point Ca Tiu Bangc xut s xây dng các mái che cm tri, các li i lót ván, và mt nhà v sinh vi h thng x lý bng khí và bãi thi ti Công Viên Bald Point ca Tiu bang Alligator Point. Ngoài ra u xe kèm theo ti Cash Bayou. Xut Ci To Công Viên và Dc Th Thuyn Qun Franklin: D án Công Viên Indian

224

Kinetics of GaAs Dissolution in H2O2?NH4OH?H2O Solutions  

Science Journals Connector (OSTI)

Gallium arsenide and other group III?V semiconductors have found numerous applications in the electronics industry because of such characteristics as the direct band gap and higher electron mobility, which make them more suitable than silicon in the fabrication of optoelectronic and high-frequency devices. ... For example, the solubilities of both As2O3 and As2O5 in water increase between 15 and 40 C (Perry and Phillips, 1995), while Ga2O3 and Ga(OH)3 are insoluble in water and no data are available on the temperature dependence of their solubility at higher pH. ... Both Sheka et al. (1966) and Sidgwick (1950) confirm that gallium hydroxides are particularly soluble in NH4OH. ...

Christine Bryce; Dimitrios Berk

1996-12-04T23:59:59.000Z

225

NETL: News Release - DOE Selects Five NOx-Control Projects to Combat Acid  

NLE Websites -- All DOE Office Websites (Extended Search)

November 5, 2004 November 5, 2004 DOE Selects Five NOx-Control Projects to Combat Acid Rain and Smog Industry Partners to Focus on Reducing Emissions While Cutting Energy Costs PITTSBURGH, PA - Continuing efforts to cut acid rain and smog-producing nitrogen oxides (NOx) have prompted the U.S. Department of Energy to partner with industry experts to develop advanced NOx-control technologies. With the selection of five new NOx-control projects, the Energy Department continues as a leader in developing advanced technologies to achieve environmental compliance for the nation's fleet of coal-fired power plants. Although today's NOx-control workhorses, such as low-NOx burners and selective catalytic reduction (SCR), have been successfully deployed to address existing regulations, proposed regulations will require deeper cuts in NOx emissions, at a greater number of generating facilities. Many of the smaller affected plants will not be able to cost-effectively use today's technologies; these are the focus of the advanced technologies selected in this announcement.

226

Secondary economic impact of acid deposition control legislation in six coal producing states: Final report  

SciTech Connect

Among the difficult policy questions on the US environmental agenda is what to do about emissions to the earth's atmosphere of pollutants that may result in ''acid rain''. The Congress has considered several pieces of legislation spelling out potential approaches to the problem and setting goals for emission reduction, mostly emphasizing the control of oxides of sulfur and nitrogen. Significant policy concern is the dollar costs to the nation's economy of achieving the intended effects of the legislation and the potential impacts on economic activity---in particular, losses of both coal mining and secondary service sector employment in states and regions dependent on the mining of high sulfur coal. There are several direct economic effects of regulations such as the acid rain control legislation. One of the more obvious effects was the switching from high sulfur coal to low sulfur coal. This would result in increases in employment and coal business procurements in low sulfur coal mining regions, but also would result in lower employment and lower coal business procurements in high sulfur coal mining areas. The potential negative effects are the immediate policy concern and are the focus of this report. 15 refs., 1 fig., 17 tabs.

Scott, M.J.; Guthrie, S.J.

1988-12-01T23:59:59.000Z

227

Nucleic acid detection compositions  

DOE Patents (OSTI)

The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor I. (Madison, WI); Brow, Mary Ann (Madison, WI); Dahlberg, James L. (Madison, WI)

2008-08-05T23:59:59.000Z

228

Cleavage of nucleic acids  

DOE Patents (OSTI)

The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Prudent, James R. (Madison, WI); Hall, Jeff G. (Madison, WI); Lyamichev, Victor L. (Madison, WI); Brow, Mary Ann D. (Madison, WI); Dahlberg, James E. (Madison, WI)

2007-12-11T23:59:59.000Z

229

Template for SYNLETT and SYNTHESIS Thieme Stuttgart New York 2013-01-11 page 1 of 10 Abstract: Amine precursors such as NH-Boc (5) and NH-formyl  

E-Print Network (OSTI)

of the solvent. Ugi reaction of the ionic liquid-grafted amine 9bt with phthalaldehydic acid and tert derivatives, esters, Ugi reaction Introduction The demand for increasing numbers of compounds, no- tably

Paris-Sud XI, Université de

230

STANDARD OPERATING PROCEDURE ACIDS CONTAINING PHOSPHOROUS  

E-Print Network (OSTI)

12.1 STANDARD OPERATING PROCEDURE for ACIDS CONTAINING PHOSPHOROUS Location(s): ___________________________________________________ Chemical(s): Hypophosphorous acid, methylphosphonic acid, phosphonic acid, phosphoric acid, phosphorous

Pawlowski, Wojtek

231

Microorganisms for producing organic acids  

DOE Patents (OSTI)

Organic acid-producing microorganisms and methods of using same. The organic acid-producing microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid, acrylic acid, propionic acid, lactic acid, and others. Further modifications to the microorganisms increase production of such organic acids as 3-hydroxypropionic acid, lactate, and others. Methods of producing such organic acids as 3-hydroxypropionic acid, lactate, and others with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers are also provided.

Pfleger, Brian Frederick; Begemann, Matthew Brett

2014-09-30T23:59:59.000Z

232

Separation Nanotechnology of Diethylenetriaminepentaacetic Acid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanotechnology of Diethylenetriaminepentaacetic Acid Bonded Magnetic Nanoparticles for Spent Nuclear Fuel. Separation Nanotechnology of Diethylenetriaminepentaacetic Acid Bonded...

233

In vitro and in vivo analysis of [64Cu-NO2A-8-Aoc-BBN(714)NH2]: a site-directed radiopharmaceutical for positron-emission tomography imaging of T-47D human breast cancer tumors  

Science Journals Connector (OSTI)

Introduction Human breast cancer, from which the T-47D cell line was derived, is known to overexpress the gastrin-releasing peptide receptor (GRPR) in some cases. Bombesin (BBN), an agonist for the GRPR, has been appended with a radionuclide capable of positron-emission tomography (PET) imaging and therapy. 64Cu-NO2A-8-Aoc-BBN(714)NH2 (NO2A=1,4,7-triazacyclononane-1,4-diacetate) has produced high-quality microPET images of GRPR-positive breast cancer xenografted tumors in mice. Methods The imaging probe was synthesized by solid-phase peptide synthesis followed by manual conjugation of the 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA) bifunctional chelator and radiolabeling in aqueous solution. The radiolabeled conjugate was subjected to in vitro and in vivo studies to determine its specificity for the GRPR and its pharmacokinetic profile. A T-47D tumor-bearing mouse was imaged with microPET/CT and microMRI imaging. Results The 64Cu-NO2A-8-Aoc-BBN(714)NH2 targeting vector was determined to specifically localize in GRPR-positive tissue. Accumulation was observed in the tumor in sufficient quantities to allow for identification of tumors in microPET imaging procedures. For example, uptake and retention in T-47D xenografts at 1, 4 and 24 h were determined to be 2.270.08, 1.350.14 and 0.280.07 % ID/g, respectively. Conclusions The 64Cu-NO2A-8-Aoc-BBN(714)NH2 produced high-quality microPET images. The pharmacokinetic profile justifies investigation of this bioconjugate as a potentially useful diagnostic/therapeutic agent. Additionally, the bioconjugate would serve as a good starting point for modification and optimization of similar agents to maximize tumor uptake and minimize nontarget accumulation.

Adam F. Prasanphanich; Lauren Retzloff; Stephanie R. Lane; Prasant K. Nanda; Gary L. Sieckman; Tammy L. Rold; Lixin Ma; Said D. Figueroa; Samantha V. Sublett; Timothy J. Hoffman; Charles J. Smith

2009-01-01T23:59:59.000Z

234

Structure-Activity Relationships in NH3-SCR over Cu-SSZ-13 as Probed by Reaction Kinetics and EPR Studies  

SciTech Connect

Cu-SSZ-13 catalysts with various Cu loadings were prepared via solution ion exchange. The hydrated samples were studied with Electron Paramagnetic Resonance (EPR). Cu2+ ion coordination numbers were obtained by analyzing the hyperfine structures while Cu-Cu distances were estimated from line broadening of the EPR features. By coupling EPR and temperature-programmed reduction (TPR) results, two Cu2+ ion locations were suggested. Standard and fast NH3-SCR, as well as non-selective NH3 oxidation reactions were carried out over these catalysts at high space velocities. For the SCR reaction, intra-particle diffusion limitation was found throughout the reaction temperatures investigated. Although clear structure-activity relationships cannot be derived, the reaction results allow for reactant diffusivities and Cu2+ ion locations to be estimated. The slower NH3 oxidation reaction, on the other hand, is kinetically limited at low temperatures, and, therefore, allows for a correlation between Cu2+ ion location and reaction kinetics to be made. Furthermore, the dynamic Cu2+ ion motion as a function of temperature could also be derived from the NH3 oxidation kinetics.

Gao, Feng; Walter, Eric D.; Karp, Eric M.; Luo, Jin-Yong; Tonkyn, Russell G.; Kwak, Ja Hun; Szanyi, Janos; Peden, Charles HF

2013-04-01T23:59:59.000Z

235

Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3  

E-Print Network (OSTI)

SCR of NO with NH3 Padmanabha Reddy Ettireddy a , Neeraja Ettireddy a , Sergey Mamedov b , Punit-impregnation method for the low temperature selective catalytic reduction (SCR) of NO with ammonia as a reductantO2 supported catalysts for low temperature SCR reaction at catalyst bed temperature 175 8C under

Boolchand, Punit

236

Phase Transformations of the Ternary System (NH4)2SO4-H2SO4-H2O and the Implications for Cirrus Cloud Formation  

E-Print Network (OSTI)

the presence of NH4 + ions in the aerosol of the upper troposphere. Low-temperature ternary phase diagrams distribution alters the cloud's radiative properties, persistence, and surface area available for heterogeneous radiation, which insulates or warms Earth, and scattering the sun's visible radiation upward, thus cooling

237

Detailed modeling and laser-induced fluorescence imaging of nitric oxide in a NH3-seeded non-premixed methane/air flame  

E-Print Network (OSTI)

non-premixed methane/air flame John B. Bell, Marcus S. Day, Joseph F. Grcar Computing Sciences-induced fluorescence imaging of nitric oxide in a NH3-seeded non-premixed methane/air flame Abstract In this paper we study the formation of NO in laminar, nitrogen diluted methane diffusion flames that are seeded

Bell, John B.

238

Interactions of elevated CO2, NH3 and O3 on mycorrhizal infection, gas exchange and N metabolism in saplings of Scots pine  

Science Journals Connector (OSTI)

Four-year-old saplings of Scots pine (Pinus sylvestris) (L.) were exposed for 11 weeks in controlled-environment chambers to charcoad-filtered air, or to charcoal-filtered air supplemented with NH3 (40 ?g m?3), O

Marta Prez-Soba; Thomas A Dueck; Gigliola Puppi; Pieter J. C. Kuiper

1995-09-01T23:59:59.000Z

239

Inelastic Neutron Scattering Study of the Specific Features of the Phase Transitions in (NH4)2WO2F4  

SciTech Connect

Oxyfluoride (NH4)2WO2F4 has been studied by the inelastic neutron scattering method over a wide temperature range 10 300 K at two initial neutron energies of 15 and 60 meV. The role of tetrahedral ammonium groups in the mechanism of sequential phase transitions at T1 = 201 K and T2 = 160 K has been discussed.

Smirnov, Lev S [Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia; Kolesnikov, Alexander I [ORNL; Flerov, I. N. [Kirensky Institute of Physics, Krasnoyarsk, Russia; Laptash, N. M. [Institute of Chemistry, Vladivostok, Russia

2009-01-01T23:59:59.000Z

240

Mixed quantum/classical investigation of the photodissociation of NH3,,A~ ... and a practical method for maintaining zero-point energy  

E-Print Network (OSTI)

with a classical mechanical treatment of nuclear motion on coupled potential-energy surfaces. Whereas older mixedMixed quantum/classical investigation of the photodissociation of NH3,,A~ ... and a practical method for maintaining zero-point energy in classical trajectories David Bonhommeaua and Donald G

Truhlar, Donald G

Note: This page contains sample records for the topic "nh acid rain" 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

Reversible Acid Gas Capture  

SciTech Connect

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2009-08-01T23:59:59.000Z

242

Reversible Acid Gas Capture  

ScienceCinema (OSTI)

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2012-12-31T23:59:59.000Z

243

Analysis of the Performance of a Wind-Turbine Airfoil under Heavy-Rain Conditions Using a Multiphase Computational Fluid Dynamics Approach  

Science Journals Connector (OSTI)

These studies show that analyzing the performance of the wind-turbine airfoil under heavy-rain conditions is critical in evaluating the turbine efficiency and overall economic justification of wind farms with respect to the other alternative energy sources. ... The development of the energy generating costs of wind turbines directly depends on the wind turbine output, which depends upon the characteristics of the turbine blades and their surface roughness. ...

Ming Cai; Emadoddin Abbasi; Hamid Arastoopour

2012-11-21T23:59:59.000Z

244

Frequency stabilization of 1. 5-. mu. m InGaAsP distributed feedback laser to NH/sub 3/ absorption lines  

SciTech Connect

NH/sub 3/ absorption lines due to vibration-rotation transitions are observed at 1.50--1.54 ..mu..m by using an InGaAsP superluminescent diode. A 1.5-..mu..m InGaAsP distributed feedback (DFB) laser is frequency stabilized to an NH/sub 3/ linear absorption line at 15196 A. Frequency stability of sigma(2,tau) = 8 x 10/sup -11/tau/sup -1/ is achieved for an averaging time range of 10 ms< or =tau< or =1 s. Such an absolute frequency-stabilized DFB laser is useful for coherent optical system applications, since it is free from the longitudinal mode jumping which results from a wide range of temperature changes and long-term device degradation.

Yanagawa, T.; Saito, S.; Yamamoto, Y.

1984-10-15T23:59:59.000Z

245

Phase transitions in C2O4H NH4 1/2H2O : a light scattering study of the high pressure phase  

E-Print Network (OSTI)

1711 Phase transitions in C2O4H NH4 1/2H2O : a light scattering study of the high pressure phase J) Résumé. 2014 AHO présente, à la pression ordinaire, une transition de phase ferroélastique du deuxième phase III soit, comme la phase II, due à une mise en ordre des ions ammoniums : leur orientation serait

Paris-Sud XI, Université de

246

Nucleic Acid Softwars  

NLE Websites -- All DOE Office Websites (Extended Search)

Nucleic Acid Software Nucleic Acid Software FR3D, a software for finding local and composite recurrent structural motifs in RNA 3D structures. Sarver, M., Zirbel, C.L., Stombaugh, J., Mokdad, A. and Leontis, N.B. (2008) FR3D: finding local and composite recurrent structural motifs in RNA 3D structures. J Math Biol, 56, 215-252. RNAView, a program for quickly generating a display of RNA/DNA secondary structures with tertiary interactions. Yang, H., Jossinet, F., Leontis, N., Chen, L., Westbrook, J., Berman, H.M. and Westhof, E. (2003) Tools for the automatic identification and classification of RNA base pairs. Nucleic Acids Res, 31, 3450-3460. RNAMLview, a program to display and/or edit RNAView 2-dimensional diagrams. 3DNA, a software package for the analysis, rebuilding and visualization of three-dimensional nucleic acid structures.

247

Reactivity of Acid Generators  

NLE Websites -- All DOE Office Websites (Extended Search)

Reactivity of Acid Generators for Chemically Amplified Resists with Reactivity of Acid Generators for Chemically Amplified Resists with Low-Energy Electrons Atsuro Nakano, Takahiro Kozawa, Seiichi Tagawa, Tomasz Szreder, James F. Wishart, Toshiyuki Kai and Tsutomu Shimokawa Jpn. J. Appl. Phys., 45, L197-L200 (2006). [Find paper at the Japanese Journal of Applied Physics] Abstract: In chemically amplified resists for ionizing radiations such as electron beams and extreme ultraviolet (EUV), low-energy electrons play an important role in the pattern formation processes. The reactivity of acid generators with low-energy electrons was evaluated using solvated electrons in tetrahydrofuran, which were generated by a pulsed electron beam. The rate constants of acid generators with the solvated electrons ranged from 0.6 to 1.9 x 1011 M-1s-1

248

Fatty Acid Carcass Mapping  

E-Print Network (OSTI)

FATTY ACID CARCASS MAPPING A Thesis by STACEY NICOLE TURK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2008... Major Subject: Animal Science FATTY ACID CARCASS MAPPING A Thesis by STACEY NICOLE TURK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

Turk, Stacey N.

2010-01-14T23:59:59.000Z

249

Acidic deposition: State of science and technology. Report 24. Visibility: Existing and historical conditions - causes and effects. Final report  

SciTech Connect

One of the important effects associated with acid precipitation related pollutants is interference with radiation transfer (light transmission) in the atmosphere. An obvious result of such interference is visibility degradation--the impairment of atmospheric clarity or of the ability to perceive form, texture, and color. Climate modification constitutes another, somewhat less obvious, result. The purpose of the NAPAP State of Science/Technology report is to summarize current knowledge regarding these radiation transfer effects. Although the report focuses mainly on visibility issues, it does encompass the emerging field of climate modification. The links between the acid rain problem and radiation transfer effects, although indirect, are quite strong. The principal link is through sulfur dioxide emissions and sulfate aerosols. A secondary link occurs through nitrogen oxide emissions.

Trijonis, J.C.; Malm, W.C.; Pitchford, M.; White, W.H.; Charlson, R.

1990-10-01T23:59:59.000Z

250

Hydrothermal synthesis and structure of an open framework Co0.7Zn1.3(PO4)2(NH3CH2CH2NH3) and Co6.2(OH)4(PO4)4Zn1.80, a new adamite type phase  

Science Journals Connector (OSTI)

The hydrothermal reaction of cobalt(II)oxalate di-hydrate, zinc oxide, and triethyl-orthophosphate, using 1,2-diaminoethane as structure directing template in water, produced two major crystal phases in almost equal amount: the purple crystals of [NH3CH2CH2NH3][Co0.7Zn1.3(PO4)2] (1) and the red burgundy crystals of Co6.2(OH)4(PO4)4Zn1.80 (2), a new adamite type phase. The structure of [NH3CH2CH2NH3] [Co0.7Zn1.3(PO4)2] (1) exhibits a 3D open framework built from PO4 and (Co/Zn)O4 tetrahedra, and (Co/Zn)O5 trigonal bipyramids, forming two major channels, an 8-membered ring channel and a 16-membered ring channel, that host the ethanediammonium ions. The Co6.2(OH)4(PO4)4Zn1.80 (2) is isomorphous with adamite-type M2(OH)XO4 structure, with a condensed vertex and edge sharing network of (Co/Zn)O5, and distorted CoO6, and PO4 subunits. The cobalt preference for higher coordination numbers is displayed in this structure, where the octahedral sites are wholly occupied by cobalt. Thermal analysis confirmed that these compounds display high thermal stability.

Aderemi Oki; Matthias Zeller; Yaneth Coranza; Jose Luevano; Allen D. Hunter

2007-01-01T23:59:59.000Z

251

The utilization of tricarboxylic acid cycle acids and the uptake of succinic acid by Neurospora crassa  

E-Print Network (OSTI)

THE UTILIZATION OF TRICARBOXYLIC ACID CYCLE ACIDS AND THE UPTAKE OF SUCCINIC ACID BY NEUROSPORA CRASSA A Thesis by PATTI LYNN GILLILAND Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1978 Ma) or Subject: Microbiology THE UTILIZATION OF TRICARBOXYLIC ACID CYCLE ACIDS AND THE UPTAKE OF SUCCINIC ACID BY NEUROSPORA CRASSA A Thesis by PATTI LYNN GILLILAND Approved as to style and content by...

Gilliland, Patti Lynn

2012-06-07T23:59:59.000Z

252

THE c2d SPITZER SPECTROSCOPIC SURVEY OF ICES AROUND LOW-MASS YOUNG STELLAR OBJECTS. IV. NH{sub 3} AND CH{sub 3}OH  

SciTech Connect

NH{sub 3} and CH{sub 3}OH are key molecules in astrochemical networks leading to the formation of more complex N- and O-bearing molecules, such as CH{sub 3}CN and CH{sub 3}OCH{sub 3}. Despite a number of recent studies, little is known about their abundances in the solid state. This is particularly the case for low-mass protostars, for which only the launch of the Spitzer Space Telescope has permitted high-sensitivity observations of the ices around these objects. In this work, we investigate the {approx}8-10 {mu}m region in the Spitzer IRS (InfraRed Spectrograph) spectra of 41 low-mass young stellar objects (YSOs). These data are part of a survey of interstellar ices in a sample of low-mass YSOs studied in earlier papers in this series. We used both an empirical and a local continuum method to correct for the contribution from the 10 {mu}m silicate absorption in the recorded spectra. In addition, we conducted a systematic laboratory study of NH{sub 3}- and CH{sub 3}OH-containing ices to help interpret the astronomical spectra. We clearly detect a feature at {approx}9 {mu}m in 24 low-mass YSOs. Within the uncertainty in continuum determination, we identify this feature with the NH{sub 3} {nu}{sub 2} umbrella mode and derive abundances with respect to water between {approx}2% and 15%. Simultaneously, we also revisited the case of CH{sub 3}OH ice by studying the {nu}{sub 4} C-O stretch mode of this molecule at {approx}9.7 {mu}m in 16 objects, yielding abundances consistent with those derived by Boogert et al. based on a simultaneous 9.75 and 3.53 {mu}m data analysis. Our study indicates that NH{sub 3} is present primarily in H{sub 2}O-rich ices, but that in some cases, such ices are insufficient to explain the observed narrow FWHM. The laboratory data point to CH{sub 3}OH being in an almost pure methanol ice, or mixed mainly with CO or CO{sub 2}, consistent with its formation through hydrogenation on grains. Finally, we use our derived NH{sub 3} abundances in combination with previously published abundances of other solid N-bearing species to find that up to 10%-20% of nitrogen is locked up in known ices.

Bottinelli, Sandrine; Van Dishoeck, Ewine F.; Lahuis, Fred [Leiden Observatory, Leiden University, P.O. Box 9513, NL 2300 RA Leiden (Netherlands); Boogert, A. C. Adwin [IPAC, NASA Herschel Science Center, Mail Code 100-22, California Institute of Technology, Pasadena, CA 91125 (United States); Bouwman, Jordy; Beckwith, Martha; Oeberg, Karin I.; Linnartz, Harold [Raymond and Beverly Sackler Laboratory for Astrophysics, Leiden Observatory, Leiden University, P.O. Box 9513, NL 2300 RA Leiden (Netherlands); Pontoppidan, Klaus M.; Blake, Geoffrey A. [California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA 91125 (United States); Evans, Neal J., E-mail: sandrine.bottinelli@cesr.f [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States)

2010-08-01T23:59:59.000Z

253

Focus Sheet | Hydrofluoric Acid Health hazards of hydrofluoric acid  

E-Print Network (OSTI)

Focus Sheet | Hydrofluoric Acid Health hazards of hydrofluoric acid Hydrofluoric acid (HF characterized by weight loss, brittle bones, anemia, and general ill health. Safe use If possible, avoid working to exposures. #12;Focus Sheet | Hydrofluoric Acid Environmental Health and Safety Environmental Programs Office

Wilcock, William

254

Physicochemical characteristics of Ti-PILC as a catalyst support for the reduction of NO by NH3  

Science Journals Connector (OSTI)

A pillared interlayered clay (PILC) intercalated by titania has been prepared as a catalyst support in an attempt to overcome the drawbacks of titania. The morphological, thermal, and surface properties of Ti-PILC have been particularly examined to use as a support for a NO SCR catalyst. The Ti-PILC prepared here was found to exhibit higher surface area and stronger acidity and thermal stability than the titania used as a common catalyst support.

Ho Jeong Chae; In-Sik Nam; Suk Bong Hong

2003-01-01T23:59:59.000Z

255

A case study of the vertical-motion field and its relation to the subtropical jet stream during an unusual period of wintertime rain in Oklahoma and Texas  

E-Print Network (OSTI)

A CASE STUDY QF THE VERTICAL-MOTION FIELD AND ITS RELATION TO THE SUBTROPICAL JET STREAM DURING AN UNUSUAL PERIOD OF WINTERTIME RAIN IN OKLAHOMA AND TEXAS A Thesis MYRON DEROYCE SMITH Submitted to the Graduate College of Texas A8M University... IN OKLAHOMA AND TEXAS A Thesis by MYRON DEROYCE SMITH Approved as to style and content by: (Chairman of Committee) (Head of Depart ent) (Member) (Member) (Member) (Member) (Member) December 1972 ABSTRACT A Case Study of the Vertical-Motion Field...

Smith, Myron Deroyce

2012-06-07T23:59:59.000Z

256

Rain Machine (Solar Still)  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Working in groups, students build simple solar stills filled with salt water and observe what happens when the stills are placed in the sun. The students then taste the water they have collected and discuss what has happened in their stills.

257

ARM - Cloud and Rain  

NLE Websites -- All DOE Office Websites (Extended Search)

the movement is from equator towards the poles. This type of circulation has the name Hadley Cell circulation. However, when we look at the winds of the world, we also have to...

258

Optical high acidity sensor  

DOE Patents (OSTI)

An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.

Jorgensen, Betty S. (Jemez Springs, NM); Nekimken, Howard L. (Los Alamos, NM); Carey, W. Patrick (Lynnwood, WA); O'Rourke, Patrick E. (Martinez, GA)

1997-01-01T23:59:59.000Z

259

Nucleic Acid Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Nucleic Acid Tools Nucleic Acid Tools RNA 3D Motif Atlas, a representative collection of RNA 3D internal and hairpin loop motifs. Petrov, A.I., Zirbel, C.L., Leontis, N.B. (2013) Automated classification of RNA 3D motifs and the RNA 3D motif atlas. RNA. Non-redundant List of RNA-containing 3D structures. Leontis, N.B., & Zirbel, C.L. (2012) In Leontis, N. B., Westhof. E. (ed.), RNA 3D structure analysis and prediction. Springer Berlin Heidelberg Vol. 27, pp. 281-298. RNA Base Triple Atlas, a collection of motifs consisting of two RNA basepairs. Abu Almakarem, A.S., Petrov, A.I., Stombaugh, J., Zirbel, C.L. and Leontis, N.B. (2012) Comprehensive survey and geometric classification of base triples in RNA structures. Nucleic Acids Res, 40, 1407-1423. R3D Align, an application for detailed nucleotide to nucleotide

260

A Direct, Biomass-Based Synthesis of Benzoic Acid: Formic Acid-Mediated Deoxygenation of the Glucose-Derived Materials Quinic Acid and Shikimic Acid  

SciTech Connect

An alternative biomass-based route to benzoic acid from the renewable starting materials quinic acid and shikimic acid is described. Benzoic acid is obtained selectively using a highly efficient, one-step formic acid-mediated deoxygenation method.

Arceo, Elena; Ellman, Jonathan; Bergman, Robert

2010-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Some Practice Problems for the Amines/Acids Test 4 Draw the Mechanisms for the following Reactions  

E-Print Network (OSTI)

Me Br NH3 (excess) NH2 + NH4Br Cl NH3 (excess) NH2 + NH4Cl O O Cl O NaOHNH + N O T Answers 1. SN2 2. Deprotonatate 3. SN2 1. SN2 2. Deprotonatate 3. SN2 4. Deprotonate 5. SN2 1. SN2 2. Deprotonatate 1. Add 2 the Mechanisms for the following Reactions Page 4 has some synthesis-design practice

Jasperse, Craig P.

262

Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters  

DOE Patents (OSTI)

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; and b) hydrolyzing the quaternary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

Moens, Luc (Lakewood, CO)

2003-06-24T23:59:59.000Z

263

Mitigation of Hydrogen Capacity Losses during Pressure Cycling of the Li3NH System by the Addition of Nitrogen  

Science Journals Connector (OSTI)

Mitigation of Hydrogen Capacity Losses during Pressure Cycling of the Li3NH System by the Addition of Nitrogen ... We attribute this enhancement to the reaction of nitrogen with liquid lithium during cycling as the Gibbs free energy of formation of Li3N (?Go = ?98.7 kJ/mol) is more negative than that of LiH (?Go = ?50.3 ... This triggered intensive research on hydrogen as a renewable fuel because the exhaust gases in hydrogen-powered vehicles mainly contain water vapor. ...

Joshua Lamb; Dhanesh Chandra; Wen-Ming Chien; Delphine Phanon; Nicolas Penin; Radovan C?erny?; Klaus Yvon

2011-06-13T23:59:59.000Z

264

Effects of gaseous NH{sub 3} and SO{sub 2} on the concentration profiles of PCDD/F in flyash under post-combustion zone conditions  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Influence of NH{sub 3} and SO{sub 2} on 2378-PCDD/F in flyash and flue gases was investigated. Black-Right-Pointing-Pointer NH{sub 3} decreased the concentration of PCDD and PCDF by 34-75% in the flyash. Black-Right-Pointing-Pointer NH{sub 3} decreased the concentration of PCDD and PCDF by 21-40% from the flue gases. Black-Right-Pointing-Pointer SO{sub 2} led to 99% PCDD and 93% PCDF reductions in the flyash. Black-Right-Pointing-Pointer SO{sub 2} led to 89% PCDD and 76% PCDF reductions in the flue gases. - Abstract: The influence of gaseous ammonia and sulphur dioxide on the formation of 2378-substituted PCDD/F on a reference flyash from a municipal waste incinerator has been investigated using a laboratory scale fixed-bed reactor. The reference flyash samples (BCR-490) was reacted under a simulated flue gas stream at temperatures of 225 and 375 Degree-Sign C for 96 h. The experiments were carried out in two series: first with simulated flue gas alone, and then with injection of NH{sub 3} or SO{sub 2} gas into the flue gas just before the reactor inlet. It was found that the injection of gaseous ammonia into the flue gas could decrease the concentration of both PCDD and PCDF by 34-75% from the solid phase and by 21-40% from the gas phase. Converting the results to I-TEQ values, it could reduce the total I-TEQ values of PCDD and PCDF in the sum of the flyash and exhaust flue gas by 42-75% and 24-57% respectively. The application of SO{sub 2} led to 99% and 93% reductions in the PCDD and PCDF average congener concentrations, respectively in the solid phase. In the gas phase, the total reductions were 89% and 76% for PCDD and PCDF, respectively. Moreover, addition of SO{sub 2} reduced the total I-TEQ value of PCDD and PCDF in the flyash and exhaust flue gas together by 60-86% and 72-82% respectively. Sulphur dioxide was more effective than ammonia in suppressing PCDD/F formation in flyash under the conditions investigated.

Hajizadeh, Yaghoub; Onwudili, Jude A. [Energy Research Institute, University of Leeds, Leeds LS2 9JT (United Kingdom); Williams, Paul T., E-mail: p.t.williams@leeds.ac.uk [Energy Research Institute, University of Leeds, Leeds LS2 9JT (United Kingdom)

2012-07-15T23:59:59.000Z

265

Frequency stabilization of an InGaAsP distributed feedback laser to an NH/sub 3/ absorption line at 15137 A with an external frequency modulator  

SciTech Connect

The oscillation frequency of a 1.5-..mu..m InGaAsP distributed feedback laser is stabilized to an NH/sub 3/ linear absorption line at 15137 A. A LiNbO/sub 3/ external frequency modulator is used instead of direct frequency modulation of the laser to extract error signals. An effective bandwidth of 100 kHz for the feedback loop is obtained through this external modulation scheme. Frequency stability of sigma(2,tau) = 4 x 10/sup -11/ is achieved for an averaging time of 1 s< or =tau< or =100 s.

Yanagawa, T.; Saito, S.; Machida, S.; Yamamoto, Y.; Noguchi, Y.

1985-11-15T23:59:59.000Z

266

Critical properties at the field-induced Bose-Einstein condensation on NiCl2-4SC(NH2)2  

SciTech Connect

We report new magnetization measurements on the spin-gap compound NiCl{sub 2}-4SC(NH{sub 2}){sub 2} at the low-field boundary of the magnetic field induced ordering. The critical density of the magnetization is analyzed in terms of a Bose-Einstein condensation (BEC) of bosonic quasiparticles. The analysis of the magnetization at the transition leads to the conclusion for the preservation of the U(1) symmetry, as required for BEC. The experimental data are well described by quantum Monte Carlo simulations.

Sengupta, Pinaki [Los Alamos National Laboratory; Al-hassenieh, Khaled A [Los Alamos National Laboratory; Jaime, Macelo [Los Alamos National Laboratory; Paduan-filho, Armando [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

267

Acidizing of Sandstone Reservoirs Using HF and Organic Acids  

E-Print Network (OSTI)

Mud acid, which is composed of HCl and HF, is commonly used to remove the formation damage in sandstone reservoirs. However, many problems are associated with HCl, especially at high temperatures. Formic-HF acids have served as an alternative...

Yang, Fei

2012-10-19T23:59:59.000Z

268

Acid Placement in Acid Jetting Treatments in Long Horizontal Wells  

E-Print Network (OSTI)

In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe...

Sasongko, Hari

2012-07-16T23:59:59.000Z

269

Acid placement and coverage in the acid jetting process  

E-Print Network (OSTI)

Many open-hole acid treatments are being conducted by pumping acid through jetting ports placed at the end of coiled tubing or drill pipe. The filter-cake on the bore-hole is broken by the jet; the acid-soluble material is dissolved, creating...

Mikhailov, Miroslav I.

2009-05-15T23:59:59.000Z

270

Characteristics of vanadia on the surface of V2O5/Ti-PILC catalyst for the reduction of \\{NOx\\} by NH3  

Science Journals Connector (OSTI)

A series of vanadia catalysts impregnated on titania pillared interlayered clays (Ti-PILCs) were prepared to identify the characteristics of vanadia on the surface of Ti-PILC for the selective catalytic reduction (SCR) of NO by NH3. V2O5/Ti-PILC exhibited superior performance as a novel SCR catalyst compared to conventional catalysts including V2O5/TiO2 and V2O5/Al2O3. NO removal activity over the supported vanadia catalyst is strongly influenced by the structure of vanadia species on the catalyst surface. The structure of vanadia species on various supports including TiO2, Al2O3, and SiO2 along with Ti-PILC has been examined by XRD, NMR and Raman analyses for the comparative study. Increasing the content of vanadia up to the monolayer coverage of the surface of Ti-PILC catalyst enhanced the ratio of the polymerized surface vanadia species to the isolated ones. These results are well correlated with TOF of vanadia on the catalyst surface for the reduction of NO by NH3.

Ho Jeong Chae; In-Sik Nam; Sung-Won Ham; Suk Bong Hong

2004-01-01T23:59:59.000Z

271

Pantothenic acid biosynthesis in zymomonas  

DOE Patents (OSTI)

Zymomonas is unable to synthesize pantothenic acid and requires this essential vitamin in growth medium. Zymomonas strains transformed with an operon for expression of 2-dehydropantoate reductase and aspartate 1-decarboxylase were able to grow in medium lacking pantothenic acid. These strains may be used for ethanol production without pantothenic acid supplementation in seed culture and fermentation media.

Tao, Luan; Tomb, Jean-Francois; Viitanen, Paul V.

2014-07-01T23:59:59.000Z

272

Carboxylic acid sorption regeneration process  

DOE Patents (OSTI)

Carboxylic acids are sorbed from aqueous feedstocks into an organic liquid phase or onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with aqueous alkylamine thus forming an alkylammonium carboxylate which is dewatered and decomposed to the desired carboxylic acid and the alkylamine.

King, C. Judson (Kensington, CA); Poole, Loree J. (Baton Rouge, LA)

1995-01-01T23:59:59.000Z

273

Carboxylic acid sorption regeneration process  

DOE Patents (OSTI)

Carboxylic acids are sorbed from aqueous feedstocks into an organic liquid phase or onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with aqueous alkylamine thus forming an alkylammonium carboxylate which is dewatered and decomposed to the desired carboxylic acid and the alkylamine. 10 figs.

King, C.J.; Poole, L.J.

1995-05-02T23:59:59.000Z

274

Transition metal ion-assisted photochemical generation of alkyl halides and hydrocarbons from carboxylic acids  

SciTech Connect

Near-UV photolysis of aqueous solutions of propionic acid and aqueous Fe3+ in the absence of oxygen generates a mixture of hydrocarbons (ethane, ethylene and butane), carbon dioxide, and Fe2+. The reaction becomes mildly catalytic (about five turnovers) in the presence of oxygen which converts a portion of alkyl radicals to oxidizing intermediates that reoxidize Fe2+. The photochemistry in the presence of halide ions (X? = Cl?, Br?) generates ethyl halides via halogen atom abstraction from FeXn3?n by ethyl radicals. Near-quantitative yields of C2H5X are obtained at ?0.05 M X?. Competition experiments with Co(NH3)5Br2+ provided kinetic data for the reaction of ethyl radicals with FeCl2+ (k = (4.0 0.5) 106 M?1 s?1) and with FeBr2+ (k = (3.0 0.5) 107 M?1 s?1). Photochemical decarboxylation of propionic acid in the presence of Cu2+ generates ethylene and Cu+. Longer-chain acids also yield alpha olefins as exclusive products. These reactions become catalytic under constant purge with oxygen which plays a dual role. It reoxidizes Cu+ to Cu2+, and removes gaseous olefins to prevent accumulation of Cu+(olefin) complexes and depletion of Cu2+. The results underscore the profound effect that the choice of metal ions, the medium, and reaction conditions exert on the photochemistry of carboxylic acids.

Carraher, Jack; Pestovsky, Oleg; Bakac, Andreja

2012-03-14T23:59:59.000Z

275

DISTRIBUTION OF LANTHANIDE AND ACTINIDE ELEMENTS BETWEEN BIS-(2-ETHYLHEXYL)PHOSPHORIC ACID AND BUFFERED LACTATE SOLUTIONS CONTAINING SELECTED COMPLEXANTS  

SciTech Connect

With the renewed interest in the closure of the nuclear fuel cycle, the TALSPEAK process is being considered for the separation of Am and Cm from the lanthanide fission products in a next generation reprocessing plant. However, an efficient separation requires tight control of the pH which likely will be difficult to achieve on a large scale. To address this issue, we measured the distribution of lanthanide and actinide elements between aqueous and organic phases in the presence of complexants which were potentially less sensitive to pH control than the diethylenetriaminepentaacetic (DTPA) used in the process. To perform the extractions, a rapid and accurate method was developed for measuring distribution coefficients based on the preparation of lanthanide tracers in the Savannah River National Laboratory neutron activation analysis facility. The complexants tested included aceto-, benzo-, and salicylhydroxamic acids, N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN), and ammonium thiocyanate (NH{sub 4}SCN). The hydroxamic acids were the least effective of the complexants tested. The separation factors for TPEN and NH{sub 4}SCN were higher, especially for the heaviest lanthanides in the series; however, no conditions were identified which resulted in separations factors which consistently approached those measured for the use of DTPA.

Rudisill, Tracy S.; Diprete, David P.; Thompson, Major C.

2013-04-15T23:59:59.000Z

276

Ebola Virus Outbreak among Wild Chimpanzees Living in a Rain Forest of Co^te Pierre Formenty, Christophe Boesch, Monique Wyers, World Health Organization (WHO), TaiF Forest Project, and Centre  

E-Print Network (OSTI)

S120 Ebola Virus Outbreak among Wild Chimpanzees Living in a Rain Forest of Co^te d'Ivoire Pierre, Paris, France An outbreak of Ebola in nature is described for the first time. During a few weeks. Laboratory procedures included histology, immunohistochemistry, bacteriology, and serology. Ebola

277

METALLICITIES, DUST, AND MOLECULAR CONTENT OF A QSO-DAMPED Ly{alpha} SYSTEM REACHING log N(H I) = 22: AN ANALOG TO GRB-DLAs  

SciTech Connect

We present the elemental abundance and H{sub 2} content measurements of a damped Ly{alpha} (DLA) system with an extremely large H I column density, log N(H I) (cm{sup -2}) = 22.0 {+-} 0.10, at z{sub abs} = 3.287 toward the QSO SDSS J081634+144612. We measure column densities of H{sub 2}, C I, C I*, Zn II, Fe II, Cr II, Ni II, and Si II from a high signal-to-noise and high spectral resolution VLT-UVES spectrum. The overall metallicity of the system is [Zn/H] = -1.10 {+-} 0.10 relative to solar. Two molecular hydrogen absorption components are seen at z = 3.28667 and 3.28742 (a velocity separation of Almost-Equal-To 52 km s{sup -1}) in rotational levels up to J = 3. We derive a total H{sub 2} column density of log N(H{sub 2}) (cm{sup -2}) = 18.66 and a mean molecular fraction of f = 2N(H{sub 2})/[2N(H{sub 2}) + N(H I)] = 10{sup -3.04{+-}0.37}, typical of known H{sub 2}-bearing DLA systems. From the observed abundance ratios we conclude that dust is present in the interstellar medium of this galaxy, with an enhanced abundance in the H{sub 2}-bearing clouds. However, the total amount of dust along the line of sight is not large and does not produce any significant reddening of the background QSO. The physical conditions in the H{sub 2}-bearing clouds are constrained directly from the column densities of H{sub 2} in different rotational levels, C I and C I*. The kinetic temperature is found to be T Almost-Equal-To 75 K and the particle density lies in the range n{sub H} = 50-80 cm{sup -3}. The neutral hydrogen column density of this DLA is similar to the mean H I column density of DLAs observed at the redshift of {gamma}-ray bursts (GRBs). We explore the relationship between GRB-DLAs and the high column density end of QSO-DLAs finding that the properties (metallicity and depletion) of DLAs with log N(H I) > 21.5 in the two populations do not appear to be significantly different.

Guimaraes, R. [Programa de Modelagem Computacional-SENAI-Cimatec, 41650-010 Salvador, Bahia (Brazil); Noterdaeme, P.; Petitjean, P. [UPMC-CNRS, UMR7095, Institut d'Astrophysique de Paris, 98bis Blvd. Arago, F-75014 Paris (France); Ledoux, C. [European Southern Observatory, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19 (Chile); Srianand, R.; Rahmani, H. [Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411007 (India); Lopez, S., E-mail: rguimara@eso.org [Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago (Chile)

2012-06-15T23:59:59.000Z

278

Tiu Ch Chn La D n Khi Phc Sm Vo ngy 21 thng 4 nm 2011, cc y Vin nh Gi Tn Hi  

E-Print Network (OSTI)

con ngi bng cách khôi phc, phc hi môi trng sng, thay th, hoc thu gom mt lng tng ng vi ngun tài nguyên thiên nhiên có cht lng, giá tr sinh thái hoc dân dng tng ng n bù các tài nguyên và dch v b tn hi t s c, nhng vn c chp nhn và hu ích giúp sàng lc mt s lng ln các d án có tim nng. Không mt yu t nào c s dng nh

279

Air Pollution Grant Ideas Possible air pollutants to study: SO2, H2S, NO2, NH3, CO, CO2, O3.  

E-Print Network (OSTI)

. Nitrogen Dioxide: Nitrogen dioxide (NO2) is one of a group of highly reactive gasses known as "oxides://www.gradko.co.uk/ram/ Gradko tubes - http://www.gradko.co.uk/pdf/Nitrogen_Dioxide.pdf Grants and Funding Allegheny County of nitrogen," or "nitrogen oxides (NOx)." Other nitrogen oxides include nitrous acid and nitric acid. While

Short, Daniel

280

Nucleic acid detection methods  

DOE Patents (OSTI)

The invention relates to methods for rapidly determining the sequence and/or length a target sequence. The target sequence may be a series of known or unknown repeat sequences which are hybridized to an array of probes. The hybridized array is digested with a single-strand nuclease and free 3{prime}-hydroxyl groups extended with a nucleic acid polymerase. Nuclease cleaved heteroduplexes can be easily distinguish from nuclease uncleaved heteroduplexes by differential labeling. Probes and target can be differentially labeled with detectable labels. Matched target can be detected by cleaving resulting loops from the hybridized target and creating free 3-hydroxyl groups. These groups are recognized and extended by polymerases added into the reaction system which also adds or releases one label into solution. Analysis of the resulting products using either solid phase or solution. These methods can be used to detect characteristic nucleic acid sequences, to determine target sequence and to screen for genetic defects and disorders. Assays can be conducted on solid surfaces allowing for multiple reactions to be conducted in parallel and, if desired, automated. 18 figs.

Smith, C.L.; Yaar, R.; Szafranski, P.; Cantor, C.R.

1998-05-19T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Novel solid state proton-conductors based on polymeric non-oxy acids. Final report  

SciTech Connect

Objectives of this project were to prepare and characterize novel solid state proton-conductors and to evaluate these compounds as fuel cell electrolytes. The thrust was on the synthesis of new proton-conducting ``model`` and ``polymeric`` compounds, based on acid functions of the type (R{sub f}SO{sub 2}){sub 2}NH and (R{sub f}SO{sub 2}){sub 2}CH{sub 2} in appropriate fluorinated carbon structures, their physics-chemical characterization (Infra-red, Nuclear Magnetic Resonance, Differential Scanning Calorimetry, and X-ray Diffraction), and is pro. evaluation as candidate fuel cell electrolytes for use at elevated temperatures. This project consisted of four tasks (i) Synthesis of Proton-Conducting Polymer Electrolytes; (ii) Physical and Chemical Characterization of Proton-Conducting Polymer Electrolytes; (iii) Electrochemical Characterization of Proton-Conducting Polymer Electrolytes; and (iv) Evaluation of Proton-Conducting Polymer Electrolytes for Fuel Cells.

Appleby, A.J.; Srinivasan, S.; Parthasarathy, A.; Gonzalez, E.R. [Texas A and M Univ., College Station, TX (United States). Center for Electrochemical Systems and Hydrogen Research; DesMarteau, D.; Gillette, M.S.; Ghosh, J.K. [Clemson Univ., SC (United States). Dept. of Chemistry; Jalan, V.; Desai, M. [ElectroChem, Inc., Woburn, MA (United States)

1992-01-01T23:59:59.000Z

282

Acidity and aluminum toxicity caused by iron oxidation around anode bars  

SciTech Connect

Soil acidity and aluminum toxicity are serious environmental problems often found in humid temperate and tropical regions or in areas with acid rain. Iron oxidation in soils can also cause high concentrations of H{sup +}, which, in turn, causes an increase of Al{sup 3+} in the soil solution. To examine this problem, a study was undertaken to discover the cause of crop damage in crops planted over buried anode bars. Anode bars are part of an impressed current cathodic protection system for pipelines near Decatur, Illinois. Soil samples were collected from the problem site and from a non-problem site for comparison. Results showed that Fe oxidation around anode bars at the problem site is stimulated by electric current, a situation that results in high concentrations of H{sup +} and reduces soil pH to less than 3.0. Under the low pH condition, the content of available Al is very high, and therefore, the soil solution becomes toxic for soybean roots. Exchangeable Al was 360 to 700 ppm in soil immediately adjacent to anode bars but only 3 ppm in the soil midway between anode bars. The damage to the plants, such as reduced vegetative growth and lowered seed yield, developed in a circular pattern over the anode bars. Factors contributing to the problem were soil Fe content, rectifier voltage, and soil drainage.

Shen, S. [Dept. of Agriculture, Wyndmoor, PA (United States). ARS Eastern Regional Research Center] [Dept. of Agriculture, Wyndmoor, PA (United States). ARS Eastern Regional Research Center; Pepper, G.E.; Hassett, J.J.; Stucki, J.W. [Univ. of Illinois, Urbana, IL (United States)] [Univ. of Illinois, Urbana, IL (United States)

1998-08-01T23:59:59.000Z

283

Acidic gas capture by diamines  

DOE Patents (OSTI)

Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.

Rochelle, Gary (Austin, TX); Hilliard, Marcus (Missouri City, TX)

2011-05-10T23:59:59.000Z

284

Constructing and engineering fatty acid metabolic pathways for the production of fuels and chemicals  

E-Print Network (OSTI)

Glucose M9 Salts NH4Cl CaCl2 Mineral solution FeSO4 MgSO4Solution Glucose M9 Salts NH4Cl CaCl2 Mineral solution FeSO4

Steen, Eric James

2010-01-01T23:59:59.000Z

285

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M.Yu. Alyapyshev; V. A. Babain; I. V. Smirnov

2006-01-01T23:59:59.000Z

286

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M. Yu. Alyapyshev; V. A. Babain; I. V. Smirnov

2006-12-01T23:59:59.000Z

287

Processing of formic acid-containing ice by heavy and energetic cosmic ray analogues  

E-Print Network (OSTI)

Formic acid (HCOOH) has been extensively detected in space environments, including interstellar medium (gas and grains), comets and meteorites. Such environments are often subjected to the action of ionizing agents, which may cause changes in the molecular structure, thus leading to formation of new species. Formic acid is a possible precursor of pre-biotic species, such as Glycine (NH2CH2COOH). This work investigates experimentally the physicochemical effects resulting from interaction of heavy and energetic cosmic ray analogues (46MeV 58Ni11+) in H2O:HCOOH (1:1) ice, at 15 K, in ultrahigh vacuum regime, using Fourier transform infrared spectrometry in the mid-infrared region (4000-600 cm-1 or 2.5-12.5 microns). After the bombardment, the sample was slowly heated to room temperature. The results show the dissociation cross-section for the formic acid of 2.4x10^-13 cm2, and half-life due to galactic cosmic rays of 8x10^7 yr. The IR spectra show intense formation of CO and CO2, and small production of more com...

Bergantini, A; Rothard, H; Boduch, P; Andrade, D P P

2014-01-01T23:59:59.000Z

288

E-Print Network 3.0 - acid-grafted cotton wool Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

pants (avoid cotton). Wind and rain gear (jacket and pants... ). Ground cloth. Sturdy boots (a must). Polypropylene or wool underwear is recommended. ... Source: Cesare, Bernardo...

289

Ethylene Production from Linolenic Acid  

Science Journals Connector (OSTI)

... and Mapson1 have shown that linolenic 1 J acid may serve as a precursor of ethylene. The possi -bility that the ... . The possi -bility that the ethylene that is evolved from plants arises from linolenic acid was investigated by determining the relationship ...

F. B. ABELES

1966-04-02T23:59:59.000Z

290

Selective Catalytic Reduction (SCR) of nitric oxide with ammonia using Cu-ZSM-5 and Va-based honeycomb monolith catalysts: effect of H2 pretreatment, NH3-to-NO ratio, O2, and space velocity  

E-Print Network (OSTI)

In this work, the steady-state performance of zeolite-based (Cu-ZSM-5) and vanadium-based honeycomb monolith catalysts was investigated in the selective catalytic reduction process (SCR) for NO removal using NH3. The aim was to delineate the effect...

Gupta, Saurabh

2004-09-30T23:59:59.000Z

291

Experimental and Theoretical EPR Study of Jahn?Teller-Active [HIPTN[subscript 3]N]MoL Complexes (L = N[subscript 2], CO, NH[subscript 3])  

E-Print Network (OSTI)

The trigonally symmetric Mo(III) coordination compounds [HIPTN[subscript 3]N]MoL (L = N[subscript 2], CO, NH[subscript 3]; [HIPTN3N]Mo = [(3,5-(2,4,6-i-Pr[subscript 3]C[subscript 6]H[subscript 2])[subscript 2]C[subscript ...

McNaughton, Rebecca L.

292

Photochemical Studies on Xanthurenic Acid  

NLE Websites -- All DOE Office Websites (Extended Search)

Photochemical Studies on Xanthurenic Acid Photochemical Studies on Xanthurenic Acid J. E. Roberts, J. F. Wishart, L. Martinez, C. F. Chignell Photochem.Photobiol. 72, 467-471 (2000) Abstract: The tryptophan metabolite xanthurenic acid has been isolated from aged human cataractous lenses. The photophysical properties of xanthurenic acid were examined to determine if it is a potential chromophore for age-related cataractogenesis. We found that xanthurenic acid produces singlet oxygen (F*= 0.17; CD3OD) with the same efficiency as the lenticular chromophore N-formyl kynurenine and quenches singlet oxygen at a rate similar to other tryptophan metabolites (2.1 x 107 M-1 s-1; CD3OD) found in the eye. As the mechanisms of induction of cataracts may also involve redox reactions, the interactions of hydrated electrons (e-aq), the azide radical

293

Evidence of acid-base interactions between amines and model indoor surfaces  

NLE Websites -- All DOE Office Websites (Extended Search)

Evidence of acid-base interactions between amines and model indoor surfaces Evidence of acid-base interactions between amines and model indoor surfaces by ATR-FTIR spectroscopy Title Evidence of acid-base interactions between amines and model indoor surfaces by ATR-FTIR spectroscopy Publication Type Journal Article LBNL Report Number LBNL-63480 Year of Publication 2007 Authors Destaillats, Hugo, Brett C. Singer, and Lara A. Gundel Journal Atmospheric Environment Volume 41 Start Page Chapter Pagination 3177-3181 ISBN Number 1352-2310 Keywords acid-base, cellulose, gypsum, nicotine, pyridine, sorption, surface materials Abstract Molecular associations of pyridine with cellulose and gypsum, surrogates for common indoor surface materials, were studied using an attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectrophotometric method. The purpose of this study was to gain insight into the molecular interactions of amines with well-characterized materials that affect their partitioning between indoor air and surfaces. The experimental results suggest the presence of at least two sorptive states for volatile and semivolatile amines, attributed to the chemisorbed species and to a more labile surface state (i.e., physisorbed pyridine). Both exhibited spectroscopic signatures corresponding to aromatic C-H stretching modes (2950-3100 cm-1) in the studied spectral region. Chemisorbed pyridine could be identified by the presence of additional IR signals in the N-H and O-H stretching region of the spectrum (2900-3600 cm-1). During desorption under a stream of N2, surface enrichment in the chemisorbed species was evidenced by a slower reduction of the absorbance of the broad band at 2900-3600 cm-1 in relation to the total pyridine absorbance change. This spectroscopic evidence for acid-base interactions between amines and surfaces is consistent with the desorption behavior observed in previous work for nicotine from model surfaces.

294

A synchroton single crystal X-ray structure determination of (NH4)3Mo4P3O16: A microporous molybdenum phosphate with Mo4O6+4 cubes  

Science Journals Connector (OSTI)

Reaction of MoO3, Mo, (NH4)2HPO4, H3PO4, and H2O in a mole ratio of 1.4:1:3.6:6:120 at 360C for 16 hr gives a nearly quantitative yield of black cubes of (NH4)3Mo4P3O16 (1). The structure of (1) was solved from data collected on a 30 30 30 ?m3 crystal at the National Synchrotron Light Source at Brookhaven National Laboratory. The compound is cubic, space group P43m, with a = 7.736(2) , and was refined to residuals of R(Rw) = 0.035(0.049). Phosphate (1) is isotypic with Cs3Mo4P3O16 and is related to the iron arsenate mineral pharmacosiderite. Unlike the Cs+ compound, (1) can be rendered microporous by thermal removal of the NH+4 cations to give ammonia with the charge compensating proton remaining behind in the lattice. Water absorption isotherms show the reversible uptake of 5.6 wt% water, which corresponds to over 15 vol% void space in (1) after the NH3 removal. The framework consists of Mo4O6+4 cubes, with six Mo?Mo contacts of 2.570(4) , joined together together by (PO4)62 along ?100? to form a 3-D network composed of tetramers of triply edge-sharing Mo-centered octahedra and phosphate groups alternating along all ?100? directions. The windows and cavities in (1) are large enough that the NH+4 cations occupy several different positions in the unit cell.

H.E. King Jr.; Linda A. Mundi; Karl G. Strohmaier; Robert C. Haushalter

1991-01-01T23:59:59.000Z

295

Treatment of acid mine wastewaters  

SciTech Connect

Acid mine drainage often results from the oxidation sulfide minerals to form sulfuric acid. As a consequence, high concentrations of metals in the both the suspended and dissolved state result from the low pH water. This paper discusses several of the more common treatment methods for acid mine drainage including the use of chemical precipitation agents, pH correction agents, filtration methods, and biodegradation methods. Advanced treatment technologies are also briefly described and include microfiltration, reverse osmosis, ion exchange, and electrodialysis.

Hayward, D.; Barnard, R.

1993-06-01T23:59:59.000Z

296

Naphthenic acid corrosion literature survey  

SciTech Connect

Naphthenic acid corrosion is a growing concern for refineries processing crudes containing high levels of naphthenic acid. Due to this concern initiatives in place to better understand the mechanism of corrosion for mitigating the corrosion. During the 1996 Fall Corrosion Group, organized existing literature relevant to the literature search. Committee Week, NACE International many refineries have and evaluate methods T-8 Refining Industry a task group, T-8-22, to perform a review and compilation of naphthenic acid corrosion. This paper provides a summary of the literature research.

Babaian-Kibala, E. [Nalco/Exxon Energy Chemicals, Sugar Land, TX (United States); Nugent, M.J. [Tosco Refining Co., Linden, NJ (United States)

1999-11-01T23:59:59.000Z

297

Application of x-ray tomography to optimization of new NOx/NH3 mixed potential sensors for vehicle on-board emissions control  

SciTech Connect

Mixed potential sensors for the detection of hydrocarbons, NO{sub x}, and NH{sub 3} have been previously developed at Los Alamos National Laboratory (LANL). The LANL sensors have a unique design incorporating dense ceramic-pelletlmetal-wire electrodes and porous electrolytes. The performance of current-biased sensors using an yttria-stabilized zirconia (YSZ) electrolyte and platinum and La{sub 0.8}Sr{sub 0.2}CrO{sub 3} electrodes is reported. X-ray tomography has been applied to non-destructively examine internal structures of these sensors. NO{sub x} and hydrocarbon response of the sensors under various bias conditions is reported, and very little NO{sub x} response hysteresis was observed. The application of a 0.6 {mu}A bias to these sensors shifts the response from a hydrocarbon response to a NO{sub x} response equal for both NO and NO{sub 2} species at approximately 500 {sup o}C in air.

Nelson, Mark A [Los Alamos National Laboratory; Brosha, Eric L [Los Alamos National Laboratory; Mukundan, Rangachary [Los Alamos National Laboratory; Garzon, Fernando H [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

298

The Surface Texturing of Monocrystalline Silicon with NH4OH and Ion Implantation for Applications in Solar Cells Compatible with CMOS Technology  

Science Journals Connector (OSTI)

Abstract This work presents the development of photovoltaic cells based on p+/n junction in Si substrates, aimed at compatibility with fabrication processes with CMOS technology. The compatible processes, which are developed in this study, are the techniques: i) Si surface texturing, with the textured surface reflection of 15% obtained by the formation of micro-pyramids (heights between 3 and 7?m) using NH4OH (ammonium hydroxide) alkaline solution, which is free of undesirable contamination by Na+ and K+ ions, when NaOH and KOH traditional solutions are used, respectively, and ii) of the ECR-CVD (Electron Cyclotron Resonance - Chemical Vapor Deposition) deposition of SiNx (silicon nitride) anti-reflective coating (ARC), which is carried out at room temperature and can be performed after the end of cell fabrication without damage on metallic tracks and without variation of p+/n junction depth. The ARC coating characterization presented that the silicon nitride has a refractive index of 1.92 and a minimum reflectance of 1.03%, which is an excellent result for application in solar (or photovoltaic) cells. For the formation of the pn junction was used ion implantation process with 11B+, E=20KeV, dose of 1x1015cm2 and four rotations of 90 to get uniformity on texturized surfaces.

A.R. Silva; J. Miyoshi; J.A. Diniz; I. Doi; J. Godoy

2014-01-01T23:59:59.000Z

299

A photoemission study of Au, Ge, and O{sub 2} deposition on NH{sub 4}F etched Si(111)  

SciTech Connect

We have studied the interaction of a metal, Au, a semiconductor, Ge, and a non-metal, O{sub 2}, with the NH{sub 4}F etched Si(111) surface with photoemission spectroscopy. Two components were present in Si 2p core level spectra from the H-terminated surface. We observed the flat band condition from the as-etched, n-type, Si(111) surface. We performed stepwise depositions of Au and measured the band bending with photoemission spectroscopy. The Fermi level pinned near mid-gap as Au was deposited onto the as-etched surface. After the deposition of 1 ML of Au, a Au-silicide layer formed. This interfacial component indicated that the passivating H layer was compromised. As the Au coverage was increased, layers of pure Au formed between the bulk silicon and the Au-silicide layer. The observed behavior was nearly identical to that of Au deposition on the Si(111) 7 {times} 7 surface. Next, we tested the ability of the monohydride layer to sustain surfactant assisted growth of Ge. Ge islanding was observed at 400{degree}C indicating that good surfactant growth was not obtained. Although the monohydride layer was not a good surfactant for the Si(111) surface at this temperature, further study at different temperatures is needed to determine the ability of the ideal monohydride layer to act as a surfactant. Finally, we observed no oxidation of the as-etched surface at room temperature upon exposure to molecular oxygen.

Terry, J.; Cao, R.; Wigren, C.; Pianetta, P.

1994-03-01T23:59:59.000Z

300

FORMATION OF GLYCINE ON ULTRAVIOLET-IRRADIATED INTERSTELLAR ICE-ANALOG FILMS AND IMPLICATIONS FOR INTERSTELLAR AMINO ACIDS  

SciTech Connect

We report the synthesis of glycine on interstellar ice-analog films composed of water, methylamine (MA), and carbon dioxide under irradiation of ultraviolet (UV) photons. Analysis of the UV-irradiated ice films by in situ mass spectrometric methods revealed glycine and other isomers as photochemical products. Deuterium-labeling experiments were conducted to determine the structures of the photoproducts and to examine their formation pathways. The reactions occur via photocleavages of C-H and N-H bonds in MA, followed by subsequent reactions of the nascent H atom with CO{sub 2}, leading to the formation of HOCO and then to glycine and carbamic acid. The photochemical synthesis of glycine occurs efficiently at the ice surfaces, and the competing photosynthesis and photodestruction processes can reach a steady-state kinetic balance at an extended UV exposure, maintaining a substantial population level of glycine. The observation suggests that interstellar amino acids can be created on ice grains, and that they can also be stored in the ices by maintaining a kinetic balance under interstellar UV irradiation. As such, the transport of amino acids in interstellar space may be possible without depleting the net abundance of amino acids in the ices but rather increasing the structural diversity of the molecules.

Lee, Chang-Woo; Kim, Joon-Ki; Moon, Eui-Seong; Kang, Heon [Department of Chemistry, Seoul National University, Gwanak-gu, Seoul 151-747, Republic of Korea (H.K.) (Korea, Republic of); Minh, Y. C. [Korea Astronomy and Space Science Institute, 838 Daeduk-daero, Yuseong-gu, Daejeon 305-348 (Korea, Republic of)], E-mail: surfion@snu.ac.kr

2009-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Alterations in the phenotype of plant cells studied by NH2-terminal amino acid-sequence analysis of proteins electroblotted from two-dimensional gel-separated total extracts  

Science Journals Connector (OSTI)

...gels by current diffusion or electrodialysis techniques. Electroblotting...N-methylpyridinium iodide) in distilled water and gently shaken on an orbital...min in 100 ml of distilled water to remove unbound polybase...proportionally changed from hormone treatment. Proteins P1-P5 are present...

G. Bauw; M. De Loose; D. Inz; M. Van Montagu; J. Vandekerckhove

1987-01-01T23:59:59.000Z

302

Asphaltene damage in matrix acidizing  

E-Print Network (OSTI)

This work addresses the problem of asphaltene deposition that occurs during acid treatments of oil reservoirs. Asphaltenes are present to some degree in most hydrocarbons. Due to the molecular weight of the components these asphaltenes are more...

Hinojosa, Roberto Antonio

2012-06-07T23:59:59.000Z

303

Ab initio potential energy surfaces for NH,,3 -...NH,,3 -  

E-Print Network (OSTI)

.1063/1.3268920 I. INTRODUCTION The field of cold T 1 K and ultracold 1 mK molecules has attracted great interest in the last few years. The production of such ultra cold species may find impor- tant applications,11 There are, in principle, two different strate- gies for producing molecular samples at ultra low tempera

304

Factors controlling naphthenic acid corrosion  

SciTech Connect

A laboratory study was conducted to elucidate the influence of chemical and physical parameters on corrosion of type 1018 carbon steel (CS, UNS G10180) and 5% Cr-0.5% Mo steel in oils containing naphthenic acids (NAs) for application to crude oil refinery systems. Effects of test duration, temperature, and acid concentration were assessed for a range of single acids of varying carbon numbers and for NA mixtures in mineral oil (MO) and in heavy vacuum gas oil (HGVO). In addition, a limited study of the effect of hydrogen sulfide (H{sub 2}S) addition to the acid-oil mixture was conducted. Use of the total acid number (TAN) as a measure of corrosiveness of a crude oil was discredited further. For the same TAN value, molecular size and structure of the acid were shown to have an important influence. Tests conducted in HGVO showed lower corrosion rates than in MO, suggesting inhibition caused by S species in the oil or the steric hindrance of naphtheno-aromatic acids. In oil containing the mixture of NAs, the corrosion rate of type 1018 CS was lower than that for 5% Cr-0.5% Mo steel. The 0.1% H{sub 2}S that passed through the acid-oil mixtures had an inhibiting effect on corrosion. Predicting corrosiveness of a crude oil from the measurement of TAN, distribution of NA composition, and S content and form was particularly challenging. The simple tests used were informative, but further work will be required to establish a standard test method that can provide an adequate ranking of crudes.

Turnbull, A. [National Physical Lab., Teddington (United Kingdom); Slavcheva, E. [Bulgarian Academy of Sciences, Sofia (Bulgaria); Shone, B. [Ty Isa, Nr Mold (United Kingdom)

1998-11-01T23:59:59.000Z

305

Study of surface acidbase properties of natural clays and zeolites by the conversion of 2-methylbut-3-yn-2-ol  

Science Journals Connector (OSTI)

Abstract Surface acidbase properties of natural clays and non-clay minerals from Jordanian (J) and Russian (R) deposits as well as H-ZSM-5 were studied applying catalytic reaction of 2-methylbut-3-yn-2-ol (MBOH) conversion. Products of both acidic and basic pathways of the reaction were formed involving surface acid/basic sites of clay minerals. Specific conversions of MBOH decreased in the following order: kaolinite-R>hydromica-R>bentonite-J>red-kaolinite-J=palygorskite-R=H-ZSM-5>zeolite-J>white-kaolinite-J>diatomite-J, which fairly correlated with TPD-NH3 acidity assessment for a majority of samples. However, a contribution of basic sites to the reaction should be taken into account, especially for hydromica-R and kaolinite-R. The strength of acid sites of natural aluminosilicates was compared based on surface acidity and reaction product yields. After 116min of MBOH conversion, the strength of acid sites changed in the following order: kaolinite-R>palygorskite-R>bentonite-J>red- kaolinite-J>white-kaolinite-J>zeolite-J>diatomite-J>H-ZSM-5. At an early (17min) stage of the reaction, the strength of active sites for natural zeolite-J and H-ZSM-5 were comparable, while the latter underwent significant deactivation due to its microporous structure. The rise of activation temperature from 500C to 700C for montmorillonite containing sample increased the conversion of MBOH due to the formation of stronger or additional number of basic sites as a result of mineral dehydroxylation. Natural clay samples with a higher content of montmorillonite (3080%) altered the acidbase properties of the surface and observed higher ability to convert MBOH over acid and basic pathways.

Lyudmila Novikova; Frank Roessner; Larisa Belchinskaya; Murad AlSawalha; Victoriya Krupskaya

2014-01-01T23:59:59.000Z

306

NH_50m_Wind  

NLE Websites -- All DOE Office Websites (Extended Search)

Metadata also available as Metadata: IdentificationInformation DataQualityInformation SpatialDataOrganizationInformation SpatialReferenceInformation EntityandAttributeI...

307

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,SO2...n and ,,SO2...n,,H2O...m  

E-Print Network (OSTI)

dioxide emissions from combustion, coal treat- ment, and volcanos can form acids in the atmosphere,,H2O...m F. Dong Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523 and Technology, Colorado State University, Fort Collins, Colorado 80523 E. R. Bernsteina Department of Chemistry

Rocca, Jorge J.

308

Coupled-surface investigation of the photodissociation of NH{sub 3}(A-tilde): Effect of exciting the symmetric and antisymmetric stretching modes  

SciTech Connect

Using previously developed potential energy surfaces and their couplings, non-Born-Oppenheimer trajectory methods are used to study the state-selected photodissociation of ammonia, prepared with up to six quanta of vibrational excitation in the symmetric ({nu}{sub 1}) or antisymmetric ({nu}{sub 3}) stretching modes of NH{sub 3}(A-tilde). The predicted dynamics is mainly electronically nonadiabatic (that is, it produces ground electronic state amino radicals). The small probability of forming the excited-state amino radical is found, for low excitations, to increase with total energy and to be independent of whether the symmetric or antisymmetric stretch is excited; however some selectivity with respect to exciting the antisymmetric stretch is found when more than one quantum of excitation is added to the stretches, and more than 50% of the amino radical are found to be electronically excited when six quanta are placed in the antisymmetric stretch. These results are in contrast to the mechanism inferred in recent experimental work, where excitation of the antisymmetric stretch by a single quantum was found to produce significant amounts of excited-state products via adiabatic dissociation at total energies of about 7.0 eV. Both theory and experiment predict a broad range of translational energies for the departing H atoms when the symmetric stretch is excited, but the present simulations do not reproduce the experimental translational energy profiles when the antisymmetric stretch is excited. The sensitivity of the predicted results to several aspects of the calculation is considered in detail, and the analysis leads to insight into the nature of the dynamics that is responsible for mode selectivity.

Bonhommeau, David; Valero, Rosendo; Truhlar, Donald G. [Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431 (United States); Jasper, Ahren W. [Combustion Research Facility, Sandia National Laboratories, P.O. Box 969, Livermore, California 94551-0969 (United States)

2009-06-21T23:59:59.000Z

309

Synthesis of HA-Seeded TTCP (Ca4(PO4)2O) Powders at 12301C from Ca(CH3COO)2 . H2O and NH4H2PO4  

E-Print Network (OSTI)

Synthesis of HA-Seeded TTCP (Ca4(PO4)2O) Powders at 12301C from Ca(CH3COO)2 . H2O and NH4H2PO4 University, Clemson, South Carolina 29634 Tetracalcium phosphate (TTCP) Ca4(PO4)2O is one of the major powder- state process by soaking Ca- and P-containing precursors be- tween 13501 and 15001C. Such procedures

Tas, A. Cuneyt

310

Refinement of the crystal structure of the high-temperature phase G0 in (NH4)2WO2F4 (powder, x-ray, and neutron scattering)  

SciTech Connect

The (NH4)2WO2F4 compound undergoes a series of phase transitions: G0 -> 201 K -> G1 -> 160 K -> G2, with a significant change in entropy ( S1 ~ Rln10 at the G0 -> G1 transition), which indicates significant orientational disordering in the G0 phase and the order disorder type of the phase transition. X-ray diffraction is used to identify the crystal structure of the G0 phase as rhombohedral (sp. gr. Cmcm, Z = 4), determine the lattice parameters and the positions of all atoms (except hydrogen), and show that [WO2F4]2 ions can form a superposition of dynamic and static orientational disorders in the anionic sublattice. A determination of the orientational position of [NH4]+ ions calls for the combined method of elastic and inelastic neutron scattering. Inelastic neutron scattering is used to determine the state of hindered rotation for ammonium ions in the G0 phase. Powder neutron diffraction shows that the orientational disorder of NH4 ions can adequately be described within the free rotation approximation.

Novak, D. M. [Joint Institute for Nuclear Research, Dubna, Russia; Smirnov, Lev S [Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia; Kolesnikov, Alexander I [ORNL; Voronin, Vladimir [Institute of Metal Physics, Russia; Berger, I. F. [Institute of Metal Physics, Russia; Laptash, N. M. [Institute of Chemistry, Vladivostok, Russia; Vasil'ev, N. M. [Kirensky Institute of Physics, Krasnoyarsk, Russia; Flerov, I. N. [Kirensky Institute of Physics, Krasnoyarsk, Russia

2013-01-01T23:59:59.000Z

311

Solgel synthesis of iron(III) oxyhydroxide nanostructured monoliths using Fe(NO3)39H2O/CH3CH2OH/NH4OH ternary system  

Science Journals Connector (OSTI)

Iron(III) oxyhydroxide xerogels were prepared through solgel technology, using iron(III) nitrate nonahydrate as precursor, ethanol as solvent and ammonium hydroxide as gelation agent. This base is used for propylene oxide substitution, which was the gelation agent in previous works. Synthesis of a gel using NH4OH as a gelation agent is an innovative result with this type of precursor, since with metal salts the addition of a strong base commonly results in precipitation of the solid. The gel synthesis was achieved by controlling the base addition time. The dried material has a residual amount of organic impurities, in contrast with the significant amount detected in xerogels prepared using propylene oxide. The iron phase prevailing in the produced xerogels can be defined as ?-FeO(OH) (lepidocrocite), according to FTIR and Mssbauer analyses. The xerogels are formed by large clusters of well connected nanocrystallites of this phase. XRD revealed a crystalline phase retained inside the iron oxyhydroxide amorphous structure, which corresponds to NH4NO3 and results from the combination of NO3? and NH4+ ions in solution. The produced xerogel has a promising composition to be an oxidizing composite for the energetic materials area.

Lusa Dures; Orlando Oliveira; Leandro Benedini; Benilde F.O. Costa; Ana Matos Beja; Antnio Portugal

2011-01-01T23:59:59.000Z

312

Refinement of the crystal structure of the high-temperature phase G{sub 0} in (NH{sub 4}){sub 2}WO{sub 2}F{sub 4} (powder, X-ray, and neutron scattering)  

SciTech Connect

The (NH{sub 4}){sub 2}WO{sub 2}F{sub 4} compound undergoes a series of phase transitions: G{sub 0} {yields} 201, K {yields} G{sub 1} {yields} 160, and K {yields} G{sub 2}, with a significant change in entropy ({Delta}S{sub 1} {approx} Rln10 at the G{sub 0} {yields} G{sub 1} transition), which indicates significant orientational disordering in the G{sub 0} phase and the order-disorder type of the phase transition. X-ray diffraction is used to identify the crystal structure of the G{sub 0} phase as rhombohedral (sp. gr. Cmcm, Z = 4), determine the lattice parameters and the positions of all atoms (except hydrogen), and show that [WO{sub 2}F{sub 4}]{sup 2-} ions can form a superposition of dynamic and static orientational disorders in the anionic sublattice. A determination of the orientational position of [NH{sub 4}]{sup +} ions calls for the combined method of elastic and inelastic neutron scattering. Inelastic neutron scattering is used to determine the state of hindered rotation for ammonium ions in the G{sub 0} phase. Powder neutron diffraction shows that the orientational disorder of NH{sub 4} ions can adequately be described within the free-rotation approximation.

Novak, D. M., E-mail: dmn@nf.jinr.ru; Smirnov, L. S. [Joint Institute for Nuclear Research, Frank Neutron Physics Laboratory (Russian Federation)] [Joint Institute for Nuclear Research, Frank Neutron Physics Laboratory (Russian Federation); Kolesnikov, A. I. [Oak Ridge National Laboratory, Neutron Scattering Sciences Division (United States)] [Oak Ridge National Laboratory, Neutron Scattering Sciences Division (United States); Voronin, V. I.; Berger, I. F. [Russian Academy of Sciences, Institute of Metal Physics, Ural Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Metal Physics, Ural Branch (Russian Federation); Laptash, N. M. [Russian Academy of Sciences, Institute of Chemistry, Far Eastern Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Chemistry, Far Eastern Branch (Russian Federation); Vasil'ev, A. D.; Flerov, I. N. [Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)

2013-01-15T23:59:59.000Z

313

Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants  

DOE Patents (OSTI)

The present invention relates to a process for producing lipids containing the fatty acid, petroselinic acid, in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a {omega}12 desaturase from another species which does normally accumulate petroselinic acid. 19 figs.

Ohlrogge, J.B.; Cahoon, E.B.; Shanklin, J.; Somerville, C.R.

1995-07-04T23:59:59.000Z

314

Method for production of petroselinic acid and OMEGA12 hexadecanoic acid in transgenic plants  

DOE Patents (OSTI)

The present invention relates to a process for producing lipids containing the fatty acid petroselinic acid in plants. The production of petroselinic acid is accomplished by genetically transforming plants which do not normally accumulate petroselinic acid with a gene for a .omega.12 desaturase from another species which does normally accumulate petroselinic acid.

Ohlrogge, John B. (Okemos, MI); Cahoon, Edgar B. (Lansing, MI); Shanklin, John (Upton, NY); Somerville, Christopher R. (Okemos, MI)

1995-01-01T23:59:59.000Z

315

Sandstone Acidizing Using Chelating Agents and their Interaction with Clays  

E-Print Network (OSTI)

Sandstone acidizing has been carried out with mud acid which combines hydrochloric acid and hydrofluoric acid at various ratios. The application of mud acid in sandstone formations has presented quite a large number of difficulties like corrosion...

George, Noble Thekkemelathethil 1987-

2013-01-09T23:59:59.000Z

316

New syntheses of aminoalkylphosphonic acids  

E-Print Network (OSTI)

NEW SYNTHESES OF AMINOALKYLPHOSPHON1C ACIDS A Thesis by John Frederick DeBardeleben, Jr. Su'bmitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 196$ Major Subject: Chemistry NEW SYNTHESES OF AMINOALKYLPHOSPHONIC ACIDS A Thesis BY John Frederick DeBardeleben, Jr. Approved as to style and content hy: (Chairman of Committee) iJ C wc+'. A-c-~-' & (Head of Department...

DeBardeleben, John Frederick

2012-06-07T23:59:59.000Z

317

Kinetic Study on the Acid-Catalyzed Hydrolysis of Cellulose to Levulinic Acid  

Science Journals Connector (OSTI)

A variety of interesting bulk chemicals is accessible by the acid-catalyzed hydrolysis of cellulose. An interesting example is levulinic acid, a versatile precursor for fuel additives, polymers, and resins. A detailed kinetic study on the acid-catalyzed ...

B. Girisuta; L. P. B. M. Janssen; H. J. Heeres

2007-02-13T23:59:59.000Z

318

Acid Catalysis in Modern Organic  

E-Print Network (OSTI)

catalyst for organic synthesis". That is the starting sentence of this book by Yamamoto and Ishihara, which follows their earlier book "Lewis Acids in Organic Synthesis (2000)", and covers the new developments book that should be available in every well-equipped chemistry library. It will certainly be helpful

Snyder, Scott A.

319

A little rain must fall  

Science Journals Connector (OSTI)

... bordering mountain ranges1. In the mountain-range foothills, new meteoric water recharge depresses the geothermal gradient and surface heat flow as it moves downwards. In the basin centre, groundwater ... is controlled by details in the basin geometry, and local-ized highs arise in the geothermal gra-dients and surface heat flow.

Andrew P. Gize

1992-07-30T23:59:59.000Z

320

Turning Ocean Water Into Rain  

Science Journals Connector (OSTI)

...an alternative method of desalination for mainland communities...Although thermally driven desalination may be a good option for...a good attempt, but the economics will have to be proved. Kathiroli...are just starting out. Desalination. Turning ocean water into...

Yudhijit Bhattacharjee

2007-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

E-Print Network 3.0 - acid linoleic acid Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

FAs (linolenic, linoleic) - - monounsaturated FAs (oleic acid) - olive, canola - hydrogenation... Biol 458 Lecture 6 & 7 Fatty Acids 1 A. Introduction to acyl lipids...

322

Experimental and theoretical investigations of the reactions NH(X {sup 3}{sigma}{sup -})+D({sup 2}S){yields}ND(X {sup 3}{sigma}{sup -})+H({sup 2}S) and NH(X {sup 3}{sigma}{sup -})+D({sup 2}S){yields}N({sup 4}S)+HD(X {sup 1}{sigma}{sub g}{sup +})  

SciTech Connect

The rate coefficient of the reaction NH(X {sup 3}{sigma}{sup -})+D({sup 2}S){yields}{sup k{sub 1}}products (1) is determined in a quasistatic laser-flash photolysis, laser-induced fluorescence system at low pressures. The NH(X) radicals are produced by quenching of NH(a {sup 1}{delta}) (obtained in the photolysis of HN{sub 3}) with Xe and the D atoms are generated in a D{sub 2}/He microwave discharge. The NH(X) concentration profile is measured in the presence of a large excess of D atoms. The room-temperature rate coefficient is determined to be k{sub 1}=(3.9{+-}1.5)x10{sup 13} cm{sup 3} mol{sup -1} s{sup -1}. The rate coefficient k{sub 1} is the sum of the two rate coefficients, k{sub 1a} and k{sub 1b}, which correspond to the reactions NH(X {sup 3}{sigma}{sup -})+D({sup 2}S){yields}{sup k{sub 1a}}ND(X {sup 3}{sigma}{sup -})+H({sup 2}S) (1a) and NH(X {sup 3}{sigma}{sup -})+D({sup 2}S){yields}{sup k{sub 1b}}N({sup 4}S)+HD(X {sup 1}{sigma}{sub g}{sup +}) (1b), respectively. The first reaction proceeds via the {sup 2}A{sup ''} ground state of NH{sub 2} whereas the second one proceeds in the {sup 4}A{sup ''} state. A global potential energy surface is constructed for the {sup 2}A{sup ''} state using the internally contracted multireference configuration interaction method and the augmented correlation consistent polarized valence quadrupte zeta atomic basis. This potential energy surface is used in classical trajectory calculations to determine k{sub 1a}. Similar trajectory calculations are performed for reaction (1b) employing a previously calculated potential for the {sup 4}A{sup ''} state. The calculated room-temperature rate coefficient is k{sub 1}=4.1x10{sup 13} cm{sup 3} mol{sup -1} s{sup -1} with k{sub 1a}=4.0x10{sup 13} cm{sup 3} mol{sup -1} s{sup -1} and k{sub 1b}=9.1x10{sup 11} cm{sup 3} mol{sup -1} s{sup -1}. The theoretically determined k{sub 1} shows a very weak positive temperature dependence in the range 250{<=}T/K{<=}1000. Despite the deep potential well, the exchange reaction on the {sup 2}A{sup ''} ground-state potential energy surface is not statistical.

Qu, Z.-W.; Zhu, H.; Schinke, R.; Adam, L.; Hack, W. [Max-Planck-Institut fuer Dynamik und Selbstorganisation, D-37073 Goettingen (Germany); Max-Planck-Institut fuer biophysikalische Chemie, D-37077 Goettingen (Germany)

2005-05-22T23:59:59.000Z

323

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and then quenching the reactivity of the nitric acid prior to nitration of the mercury metal.

Greenhalgh, Wilbur O. (Richland, WA)

1989-01-01T23:59:59.000Z

324

Studies On Advanced Lead-Acid Batteries.  

E-Print Network (OSTI)

??Subsequent to the studies on precursor lead-acid systems by Daniel, Grove and Sindesten, practical lead-acid batteries began with the research and inventions of Raymond Gaston (more)

Martha, Surendra Kumar

2005-01-01T23:59:59.000Z

325

Modeling of Acid Fracturing in Carbonate Reservoirs  

E-Print Network (OSTI)

The acid fracturing process is a thermal, hydraulic, mechanical, and geochemical (THMG)-coupled phenomena in which the behavior of these variables are interrelated. To model the flow behavior of an acid into a fracture, mass and momentum balance...

Al Jawad, Murtada s

2014-06-05T23:59:59.000Z

326

Recovery of mercury from acid waste residues  

DOE Patents (OSTI)

Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and thence quenching the reactivity of the nitric acid prior to nitration of the mercury metal. 1 fig.

Greenhalgh, W.O.

1987-02-27T23:59:59.000Z

327

Synthesis of Biodiesel via Acid Catalysis  

Science Journals Connector (OSTI)

Synthesis of Biodiesel via Acid Catalysis ... Biodiesel is synthesized via the transesterification of lipid feedstocks with low molecular weight alcohols. ... Nonetheless, acid-catalyzed processes could produce biodiesel from low-cost feedstocks, lowering production costs. ...

Edgar Lotero; Yijun Liu; Dora E. Lopez; Kaewta Suwannakarn; David A. Bruce; James G. Goodwin, Jr.

2005-01-25T23:59:59.000Z

328

Chemical Additive Selection in Matrix Acidizing  

E-Print Network (OSTI)

critical detail of weak acid chemistry. One concern when using any acid in oilfield operations is the corrosion of well tubulars. Thus operators often choose to pump corrosion inhibitor, a chemical additive electrostatically attracted... in oilfield operations, each of which protects well tubulars using the same mechanism: by impeding the acid?s ability to diffuse to the tubing surface. Because of the unique attraction of corrosion inhibitor to the metal surface, and the corrosion inhibitor...

Weidner, Jason 1981-

2011-05-09T23:59:59.000Z

329

Reactions Between Water Soluble Organic Acids and Nitrates in...  

NLE Websites -- All DOE Office Websites (Extended Search)

Between Water Soluble Organic Acids and Nitrates in Atmospheric Aerosols: Recycling of Nitric Acid and Formation of Reactions Between Water Soluble Organic Acids and Nitrates in...

330

Sandia National Laboratories: Due Diligence on Lead Acid Battery...  

NLE Websites -- All DOE Office Websites (Extended Search)

Due Diligence on Lead Acid Battery Recycling March 23, 2011 Lead Acid Batteries on secondary containment pallet Lead Acid Batteries on secondary containment pallet In 2004, the US...

331

Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Acidic Polymers for Chemical Vapor Sensing. Hydrogen-Bond Acidic Polymers for Chemical Vapor Sensing. Abstract: A review with 171 references. Hydrogen-bond acidic polymers for...

332

Unnatural reactive amino acid genetic code additions  

DOE Patents (OSTI)

This invention provides compositions and methods for producing translational components that expand the number of genetically encoded amino acids in eukaryotic cells. The components include orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, orthogonal pairs of tRNAs/synthetases and unnatural amino acids. Proteins and methods of producing proteins with unnatural amino acids in eukaryotic cells are also provided.

Deiters, Alexander; Cropp, T. Ashton; Chin, Jason W.; Anderson, J. Christopher; Schultz, Peter G.

2014-08-26T23:59:59.000Z

333

Thermal Stability Of Formohydroxamic Acid  

SciTech Connect

The thermal stability of formohydroxamic acid (FHA) was evaluated to address the potential for exothermic decomposition during storage and its use in the uranium extraction process. Accelerating rate calorimetry showed rapid decomposition at a temperature above 65 {degree}?C; although, the rate of pressure rise was greater than two orders of magnitude less than the lower bound for materials which have no explosive properties with respect to transportation. FHA solutions in water and nitric acid did not reach runaway conditions until 150 {degree}?C. Analysis by differential scanning calorimetry showed that FHA melted at 67 {degree}?C and thermally decomposed at 90 {degree}?C with an enthalpy of -1924 J/g. The energics of the FHA thermal decomposition are comparable to those measured for aqueous solutions of hydroxylamine nitrate. Solid FHA should be stored in a location where the temperature does not exceed 20-25 {degree}?C. As a best practice, the solid material should be stored in a climate-controlled environment such as a refrigerator or freezer. FHA solutions in water are not susceptible to degradation by acid hydrolysis and are the preferred way to handle FHA prior to use.

Fondeur, F. F.; Rudisill, T. S.

2011-10-21T23:59:59.000Z

334

Radioiodinated fatty acid analogs for myocardial imaging  

SciTech Connect

Fatty acids are the preferred substrate for the normoxic heart. About sixty percent of the energy required by the myocardium is provided by fatty acid [beta]-oxidation. Many scientists have focused on the alterations in fatty acid metabolism in the ischemic heart for the development of radiolabelled fatty acids for functional imaging of the heart. Three main categories of compounds were synthesized: tetrazoles (1 and 2), glycidic and [alpha]-methylene acids (3-5), and analogs of oleic acid (6,7 and 7A). The tetrazole group has a similar pKa and size to that of a carboxyl group; however, such fatty acid analogs cannot undergo normal fatty acid metabolism. Glycidic and [alpha]-methylene analogs are potential irreversible inhibitors of fatty acid metabolism. Oleic acid analogs were investigated to assess the affect of stereochemical consequences on biodistribution. The key intermediates in the synthesis of the target compounds were [omega]-nitrophenyl alkylcarboxylic acids and alcohols, which were made using a variety of cross-coupling reactions. The Wittig reaction, which was used in the synthesis of tetrazole 1 and glycidic acid 3, gave low yields of the cross-coupled products. The remaining target compounds were synthesized by condensation of appropriate RCu (CN) ZnI and substituted benzyl bromides or by Pd[sup II] catalyzed cross-coupling of substituted arylhalides with suitable alkynes. The latter two reactions produced much higher yields of the desired products. All of the target compounds were radiolabeled with [sup 125]I by various Cu(I) catalyzed radioiodine exchange procedures and were then subjected to tissue biodistribution (TD) studies in rats. Except for the 15-(4-iodophenyl)-2-methylene-pentadecanoic acid (5), all of the fatty acid analogs failed to surpass clinically-used 15-(4-iodophenyl)pentadecanoic acid (IPPA) in their ability to be taken up and retained by the rat myocardium.

Ruyan, M.K.

1993-01-01T23:59:59.000Z

335

Acid Fracture and Fracture Conductivity Study of Field Rock Samples  

E-Print Network (OSTI)

Acid fracturing is a well stimulation strategy designed to increase the productivity of a producing well. The parameters of acid fracturing and the effects of acid interaction on specific rock samples can be studied experimentally. Acid injection...

Underwood, Jarrod

2013-11-15T23:59:59.000Z

336

Micro-electro-mechanical systems phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

2010-12-21T23:59:59.000Z

337

Micro-electro-mechanical systems phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte.

Sopchak, David A. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Graff, Robert T. (Modesto, CA)

2010-08-17T23:59:59.000Z

338

Common amino acid domain among endopolygalacturonases of ascomycete fungi.  

Science Journals Connector (OSTI)

...How- ever, amino acid compositions of homogeneous PGs appear...Mugnier (Rhone-Poulenc Agrochemical Co., France). C. lindemuthianum...Pharmacia). Amino acid composition. Amino acid analysis was...chromatography. amino acid compositions of the three purified materials...

J P Keon; G Waksman

1990-08-01T23:59:59.000Z

339

Recreation of Brnsted acid sites in phosphorus-modified HZSM-5(Ga) by modification with various metal cations  

Science Journals Connector (OSTI)

Abstract To investigate the recreation of Brnsted acid sites in phosphorus-modified HZSM-5(Ga) zeolites by modification with various metal cations, we prepared several HZSM-5(Ga) zeolites co-modified with Mg, Ca, La or Zr and P (M/P/HZSM-5(Ga)). From FT-IR, 31P MAS NMR, and NH3-TPD measurements, it was found that the introduced metal cations (M) of Mg, Ca, La, and Zr react with the pre-introduced phosphorus to generate phosphorus species such as Mx(PO4)y, resulting in the recreation of some native Brnsted acid sites (Si(OH)Ga). The degree of recreation of the Brnsted acid sites was strongly dependent on the M/Ga ratio and doped metal valence. Modification with La and Zr that have higher valences more effectively recreated the Brnsted acid sites compared to Mg and Ca, which have di-valence. The conversion of ethanol to propylene was carried out over the M/P/HZSM-5(Ga). The propylene yield increased with increasing M/Ga ratio and reached maximum values of ca. 26C-% for Zr/P/HZSM-5(Ga) with a Zr/Ga ratio of 0.25 and ca. 29C-% for La/P/HZSM-5(Ga) with a La/Ga ratio of 0.4. The propylene yield hardly changed for the co-modified HZSM-5(Ga) zeolites during the 24h of reaction time, indicating the suppression of both carbonaceous deposition and the release of gallium from the zeolite framework.

Nao Tsunoji; Takushi Sonoda; Yoshiyasu Furumoto; Masahiro Sadakane; Tsuneji Sano

2014-01-01T23:59:59.000Z

340

Morphology control of open-framework zinc phosphate Zn{sub 4}(H{sub 3}O)(NH{sub 4}){sub 3}(PO{sub 4}){sub 4} via microwave-assisted technique  

SciTech Connect

Open-framework zinc phosphates were synthesized by microwave-assisted technique, and it was shown that the morphology of as-prepared materials could be easily tailored by changing synthesis temperature, reaction time and pH value. During the synthesis, when the reaction temperature increases from 130 C to 220 C, the products transformed from hexagonal prisms to polyhedron along with the disappearance of the hexagonal prisms vertical plane. Simultaneously, both the reaction time and pH value could promote the nucleation and growth of crystal particles. More interestingly, the target products with different morphologies could be obtained by varying the usage of NaOH or NH{sub 3}H{sub 2}O at 130 C during the microwave synthesis process. - Graphical abstract: Zinc phosphates with variable morphologies can be obtained by simply tuning the microwave-heating temperatures. Display Omitted - Highlights: Synthesis of open-framework Zn{sub 4} (H{sub 3}O) (NH{sub 4}){sub 3}(PO{sub 4}){sub 4} compounds employing microwave technique. Dependence of morphology on the reaction conditions. Morphology transformation from hexagonal prisms to polyhedron was observed.

Ding, Ling [School of Textile and Material Science, Dalian Polytechnic University, Dalian 116034 (China); Song, Yu, E-mail: songyu@dlpu.edu.cn [School of Textile and Material Science, Dalian Polytechnic University, Dalian 116034 (China); Yang, Wei; Xue, Run-Miao [School of Textile and Material Science, Dalian Polytechnic University, Dalian 116034 (China); Zhai, Shang-Ru [Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034 (China); An, Qing-Da, E-mail: anqingda@dlpu.edu.cn [Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034 (China)

2013-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Acid-catalytic decomposition of peracetic acid in the liquid phase  

SciTech Connect

This paper elucidates the kinetic relationships of peracetic acid (PAA) decomposition in the presence of mineral acids and their heterogeneous analogs, polystyrene-di-vinylbenzene cation-exchangers, differing in physicochemical and morphological parameters. It is shown that the thermal decomposition of PAA in acetic acid is an acid-catalyzed reaction. The controlling step of the reaction is protonation of the substrate with formation of an active intermediate form. Sulfonated cation-exchangers are twice as effective as sulfuric acid in this process. Polystyrene-divinylbenzene sulfonated cation-exchangers can be used with success as acid catalysts in oxidation processes involving PAA, because of their high effectiveness, stability, and availability.

Kharchuk, V.G.; Kolenko, I.P.; Petrov, L.A.

1985-12-01T23:59:59.000Z

342

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1996-01-01T23:59:59.000Z

343

Self-assembling multimeric nucleic acid constructs  

DOE Patents (OSTI)

The invention is directed to constructs and compositions containing multimeric forms of nucleic acid. Multimeric nucleic acids comprise single-stranded nucleic acids attached via biotin to streptavidin and bound with a functional group. These constructs can be utilized in vivo to treat or identify diseased tissue or cells. Repeated administrations of multimeric nucleic acid compositions produce a rapid and specific amplification of nucleic acid constructs and their attached functional groups. For treatment purposes, functional groups may be toxins, radioisotopes, genes or enzymes. Diagnostically, labeled multimeric constructs may be used to identify specific targets in vivo or in vitro. Multimeric nucleic acids may also be used in nanotechnology and to create self-assembling polymeric aggregates such as membranes of defined porosity, microcircuits and many other products.

Cantor, Charles R. (Boston, MA); Niemeyer, Christof M. (Bremen, DE); Smith, Cassandra L. (Boston, MA); Sano, Takeshi (Boston, MA); Hnatowich, Donald J. (Brookline, MA); Rusckowski, Mary (Southborough, MA)

1999-10-12T23:59:59.000Z

344

Testing of organic acids in engine coolants  

SciTech Connect

The effectiveness of 30 organic acids as inhibitors in engine coolants is reported. Tests include glassware corrosion of coupled and uncoupled metals. FORD galvanostatic and cyclic polarization electrochemistry for aluminum pitting, and reserve alkalinity (RA) measurements. Details of each test are discussed as well as some general conclusions. For example, benzoic acid inhibits coupled metals well but is ineffective on cast iron when uncoupled. In benzoic acid inhibits coupled metals well but is ineffective on cast iron when uncoupled. In general, the organic acids provide little RA when titrated to a pH of 5.5, titration to a pH of 4.5 can result in precipitation of the acid. Trends with respect to acid chain length are reported also.

Weir, T.W. [ARCO Chemical Co., Newtown Square, PA (United States)

1999-08-01T23:59:59.000Z

345

Formation of calcium carbonate films on chitosan substrates in the presence of polyacrylic acid  

SciTech Connect

In this investigation, chitosan membranes with different surface average degrees of deacetylation (DA) are prepared and then are employed as the support matrix to culture calcium carbonate (CaCO{sub 3}). In the presence of high concentration of polyacrylic acid (PAA), the CaCO{sub 3} films obtained on the surface of all chitosan films mainly consisted of vaterite, which suggests the presence of bulk PAA plays an overwhelming part in stabilizing the vaterite. As a comparison, the influences of active groups indicate that only in case of low concentration PAA the thin CaCO{sub 3} films grown on chitosan with 8% DA mainly consisted of vaterite owing to the strong nucleation ability of -NH{sub 2} group, whereas, for those grown on chitosan with 80% DA the CaCO{sub 3} films mainly consisted of aragonite. A more complex scenario revealed that in the case of intermediate concentration of PAA the formed polymorphs behave as mixtures of vaterite and aragonite. - Graphical abstract: Chitosan membranes with different degrees of deacetylation (DA) are employed as support to culture calcium carbonate (CaCO{sub 3}). In high concentration of polyacrylic acid (PAA), the CaCO{sub 3} films obtained consisted of vaterite. However, the CaCO{sub 3} film grown on chitosan with 8% DA mainly consisted of vaterite as opposed to aragonite for chitosan with 8% DA. The schematic presentation of the formation of calcium carbonate on chitosan films with different degrees of acetylation in the presence of PAA with low-, mid- and high concentrations.

He, Linghao; Xue, Rui [Zhengzhou University of Light Industry Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002 (China); Song, Rui, E-mail: rsong@gucas.ac.c [Zhengzhou University of Light Industry Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002 (China); College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049 (China)

2009-05-15T23:59:59.000Z

346

Waste acid recycling via diffusion dialysis  

SciTech Connect

Inorganic acids are commonly used for surface cleaning and finishing of metals. The acids become unuseable due to contamination with metals or diluted and weakened. Diffusion dialysis has become a way to recover the useable acid and allow separation of the metals for recovery and sale to refineries. This technique is made possible by the use of membranes that are strong enough to withstand low ph and have long service life.

Steffani, C.

1995-05-26T23:59:59.000Z

347

Organic Phosphoric Acid of the Soil.  

E-Print Network (OSTI)

TEXAS AGRICULTURAL EXPERIMENT STATIONS BULLETIN NO. +6CT /36 CHEMICAL SECTION, FEBRUARY, 191 1 I TECHNICAL BULLETIN Organic Phosphoric Acid of the Soil BY G. S. FRAPS, Chemist POSTOFFICE College Station, Brazos County, 'Texas. ,\\ustin... . ................................................ introduction 5 .............................. hmmonia-Soluble Phosphoric Acid 5 ................ Solubility of Phosphates in Ammonia 6 I Fixation of Phosphoric Acid from Ammonia .......... 7 Effect of Ratio of Soil to Solvent in Extraction of Phos- I I...

Fraps, G. S. (George Stronach)

1911-01-01T23:59:59.000Z

348

Carboxylic acid accelerated formation of diesters  

DOE Patents (OSTI)

This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about 0 and 80 C in the substantial absence of a hydrogenation or carbonylation catalyst.

Tustin, G.C.; Dickson, T.J.

1998-04-28T23:59:59.000Z

349

Acid Doped Membranes for High Temperature PEMFC  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Acid Doped Membranes for High Temperature PEMFC to the High Temperature Membrane Working Group, May 25, 2004 in Philadelphia, PA.

350

Biomedical Application of Hyaluronic Acid Nanoparticles  

E-Print Network (OSTI)

Hyaluronic acid (HA) is a naturally occurring biodegradable polymer with a variety of applications in medicine including tissue engineering, dermatological fillers, and viscosupplementation for osteoarthritis treatment. ...

Fakhari, Amir

2012-05-31T23:59:59.000Z

351

Nucleic Acid Standards - Program List  

NLE Websites -- All DOE Office Websites (Extended Search)

List of Programs and References List of Programs and References CEHS M. A. El Hassan & C. R. Calladine (1995). ``The Assessment of the Geometry of Dinucleotide Steps in Double-Helical DNA: A New Local Calculation Scheme.'' J. Mol. Biol. 251, 648-664. X. J. Lu, M. A. El Hassan & C. A. Hunter (1997). ``Structure and Conformation of Helical Nucleic Acids: Analysis Program (SCHNAaP).''J. Mol. Biol. 273, 668-680. CompDNA (Please refer to Dr. Andrey A. Gorin: agor@sbnmr1.ski.mskcc.org OR Dr. Victor B. Zhurkin: zhurkin@lmmb.nci.nih.gov) A. A. Gorin, V. B. Zhurkin & W. K. Olson (1995). ``B-DNA Twisting Correlates with Base-pair Morphology.'' J. Mol. Biol. 247, 34-48. K. M. Kosikov, A. A. Gorin, V. B. Zhurkin & W. K. Olson (1999). ``DNA Stretching and Compression: Large-scale Simulations of Double Helical

352

Nucleic Acid Standards - Refinement Parameters  

NLE Websites -- All DOE Office Websites (Extended Search)

Refinement Parameters Refinement Parameters The DNA/RNA topology and parameter files for X-PLOR are shown below. These were tested with DNA structures and with protein-DNA complexes. X-PLOR topology file X-PLOR parameter files: X-PLOR parameter file For the refinement of high resolution structures (< 1.7 Angstroms) the parameter file with distinct bond distances and bond angles for both C2'-endo and C3'-endo conformations should be considered: X-PLOR parameter file for high resolution structures "New Parameters for the Refinement of Nucleic Acid Containing Structures." Gary Parkinson, Jaroslav Vojtechovsky, Lester Clowney, Axel Brunger*, and Helen M. Berman. (1996) Acta Cryst. D 52, 57-64 Rutgers University, Department of Chemistry, Piscataway, NJ 08855-0939; *The Howard Hughes Medical Institute and Departments of Molecular and

353

E-Print Network 3.0 - acid eicosapentaenoic acid Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sample search results for: acid eicosapentaenoic acid Page: << < 1 2 3 4 5 > >> 1 Fish or Fish Oil in the Diet and Heart Attacks MAURICE E. STANSBY Summary: . Further...

354

E-Print Network 3.0 - acids eicosapentaenoic acid Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sample search results for: acids eicosapentaenoic acid Page: << < 1 2 3 4 5 > >> 1 Fish or Fish Oil in the Diet and Heart Attacks MAURICE E. STANSBY Summary: . Further...

355

Organic acid-tolerant microorganisms and uses thereof for producing organic acids  

DOE Patents (OSTI)

Organic acid-tolerant microorganisms and methods of using same. The organic acid-tolerant microorganisms comprise modifications that reduce or ablate AcsA activity or AcsA homolog activity. The modifications increase tolerance of the microorganisms to such organic acids as 3-hydroxypropionic acid (3HP), acrylic acid, and propionic acid. Further modifications to the microorganisms such as increasing expression of malonyl-CoA reductase and/or acetyl-CoA carboxylase provide or increase the ability of the microorganisms to produce 3HP. Methods of generating an organic acid with the modified microorganisms are provided. Methods of using acsA or homologs thereof as counter-selectable markers include replacing acsA or homologs thereof in cells with genes of interest and selecting for the cells comprising the genes of interest with amounts of organic acids effective to inhibit growth of cells harboring acsA or the homologs.

Pfleger, Brian Frederick; Begemann, Matthew Brett

2014-05-06T23:59:59.000Z

356

Catalytic transformations of cellulose and its derived carbohydrates into 5-hydroxymethylfurfural, levulinic acid, and lactic acid  

Science Journals Connector (OSTI)

The catalytic transformation of cellulose into key building-block or platform chemicals such as 5-hydoxymethylfurfural (HMF), levulinic acid, and lactic acid under mild conditions, has attracted much attention...

Weiping Deng; Qinghong Zhang; Ye Wang

2014-12-01T23:59:59.000Z

357

Yeast display evolution of a kinetically efficient 13-amino acid substrate for lipoic acid ligase  

E-Print Network (OSTI)

Escherichia coli lipoic acid ligase (LplA) catalyzes ATP-dependent covalent ligation of lipoic acid onto specific lysine side chains of three acceptor proteins involved in oxidative metabolism. Our lab has shown that LplA ...

Puthenveetil, Sujiet

358

2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic Acid)s with...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic Acid)s with Frozen-in Free Volume for use in High Temperature Fuel Cells 2006 DOE Hydrogen Program Poly (p-phenylene Sulfonic...

359

The Arabidopsis hrl1 mutation reveals novel overlapping roles for salicylic acid, jasmonic acid and ethylene  

E-Print Network (OSTI)

and ethylene signalling in cell death and defence against pathogens Sendil K. Devadas1 , Alexander Enyedi2 molecules: salicylic acid (SA), jasmonic acid (JA) and ethylene (ET). The hrl1 (hypersensitive response

Raina, Ramesh

360

Effect of dietary cysteine, methionine, and sterculic acid on fatty acid distribution in rat adipose tissue  

E-Print Network (OSTI)

EFFECT OF DIETARY CYSTEINE, MFTHIONINE, AND STERCULIC ACID ON FATTY ACID DISTRIBUTION IN RAT ADIPOSE TISSUE A Thesis By MARY FRANCES BROTZE Submitted to the Graduate College of the Texas A(M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January 1968 Major Subject: BIOCHEMISTRY EFFECT OF DIETARY CYSTEINE, METHIONINE, AND STERCULIC ACID ON FATTY ACID DISTRIBUTION IN RAT ADIPOSE TISSUE A Thesis MAaY FRANCES BRC ~ '!E Approved as to style...

Brotze, Mary Frances

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Phase coexistence in the mixed crystal Rb[sub 1-x](NH[sub 4])[sub x]H[sub 2]AsO[sub 4  

SciTech Connect

A study of the coexistence phenomenon in mixed crystals of rubidium ammonium dihydrogen arsenate has been done. Coexistence in this study refers to the simultaneous presence of ferroelectric and proton glass phases as temperature is lowered below the ferroelectric phase transition temperature T[sub c]. Such coexistence is found to exist in these mixed crystals only for small ammonium concentrations. The results show that coexistence exists for lower ammonium concentration than previously suggested. A study was also done on crystals with larger ammonium concentrations that show pure proton glass behavior and the results compared with the coexistence phenomenon. Dielectric, spontaneous polarization and nuclear magnetic resonance experiments on mixed crystals with small ammonium concentrations show that at low temperatures there exists intimate coexistence of ferroelectric clusters with proton glass clusters below the glass transition temperature T[sub g]. In the proton glass phase, it is observed that a spread of relaxation times due to the creation and annihilation of HAsO[sub 4] and H[sub 3]AsO[sub 4] pairs as they diffuse through the crystal. Spin lattice relaxation times for the acid deuterons in a 10% ammoniated sample show a broad T[sub 1] minimum near the glass transition temperature which is characteristic of proton glasses. Field-cooling experiments were also done on the pure proton glass. The results are consistent with dielectric measurements, but the remanent polarization was found to be extremely small. This polarization was found to depend on the rate of heating and cooling the sample while performing the experiment.

Pinto, N.J.

1992-01-01T23:59:59.000Z

362

Further Investigation of Fluoboric Acid in Sandstone Acidizing Using ^(11)B and ^(19)F NMR  

E-Print Network (OSTI)

Although fluoboric acid (HBF_(4)) has long been known as one of the low-damaging acid treatments for clayey sandstone formations, little is known of its chemistry which could explain the mixed results of fluoboric acid in actual field application. A...

Pituckchon, Arpajit

2014-05-01T23:59:59.000Z

363

Effect of defaunation and amino acid supplementation on growth and amino acid balance in growing sheep  

E-Print Network (OSTI)

, and the wool growth. The supplementation with protected amino acids may increase the growth rate and may lead and the addition of protected methionine and lysine on animal growth and amino acids digestibility in the body week for 9 weeks. Amino acids were determined in feed, blood, wool and feces in order to calculate

Paris-Sud XI, Université de

364

Nitrates and Prussic Acid in Forages  

E-Print Network (OSTI)

When nitrates and prussic acid accumulate in forage, the feed may not be safe for livestock consumption. Learn the symptoms of nitrate and prussic acid poisoning and which plants are most likely to pose a risk to livestock. Also learn sampling...

Provin, Tony; Pitt, John L.

2003-01-06T23:59:59.000Z

365

Naphthenic acid corrosion by Venezuelan crudes  

SciTech Connect

Venezuelan crudes can contain levels of naphthenic acids that cause corrosion in distillation units designed for sweet crudes. This naphthenic acid corrosion can be mitigated in several ways, the most common of which is selective alloying. This paper will provide information from field experience on how various refineries worldwide have upgraded materials to run Venezuelan crudes in a cost effective way.

Hopkinson, B.E.; Penuela, L.E. [Lagoven, S.A., Judibana (Venezuela). Amuay Refinery

1997-09-01T23:59:59.000Z

366

Naphthenic acid corrosion in crude distillation units  

SciTech Connect

This paper summarizes corrosion experience in crude distillation units processing highly naphthenic California crude oils. Correlations have been developed relating corrosion rates to temperature and total acid number. There is a threshold acid number in the range of 1.5 to 2 mg KOH/g below which corrosion is minimal. High concentrations of hydrogen sulfide may raise this threshold value.

Piehl, R.L.

1988-01-01T23:59:59.000Z

367

Ion mobility and phase transitions in heptafluorodiantimonates(III) Cs(1?x)(NH4)xSb2F7 and K0.4Rb0.6Sb2F7 according to NMR and DSC data  

Science Journals Connector (OSTI)

Abstract Ion mobility and phase transitions in heptafluorodiantimonates(III) Cs1?x(NH4)xSb2F7 (x=0.2; 0.6) and K0.4Rb0.6Sb2F7 were studied by the 19F, 1H NMR and DSC. The character of ionic motions in fluoride and ammonium sublattices with temperature variations was investigated. Types of ion motions and temperature ranges in which they are observed were determined. It was found that the predominant form of ionic motions in high-temperature modifications is a diffusion of fluorine atoms, whereas the number of diffusing ammonium ions depends on the sample composition. The observed phase transitions in heptafluorodiantimonates(III) of cesiumammonium and potassiumrubidium with a formation of high-temperature modifications are transitions into a superionic state (?>10?3S/cm above 450K).

V.Ya. Kavun; M.M. Polyantsev; L.A. Zemnukhova; A.B. Slobodyuk; V.I. Sergienko

2014-01-01T23:59:59.000Z

368

Hydrogen storage in a combined M.sub.xAlH.sub.6/M'.sub.y(NH.sub.2).sub.z system and methods of making and using the same  

DOE Patents (OSTI)

As a promising clean fuel for vehicles, hydrogen can be used for propulsion, either directly or in fuel cells. Hydrogen storage compositions having high storage capacity, good dehydrogenation kinetics, and hydrogen release and uptake reactions which are reversible are disclosed and described. Generally a hydrogen storage composition of a metal aluminum hexahydride and a metal amide can be used. A combined system (Li.sub.3AIH.sub.6/3LiNH.sub.2) with a very high inherent hydrogen capacity (7.3 wt %) can be carried out at moderate temperatures, and with approximately 95% of that inherent hydrogen storage capacity (7.0%) is reversible over repeated cycling of release and uptake.

Lu, Jun (Salt Lake City, UT); Fang, Zhigang Zak (Salt Lake City, UT); Sohn, Hong Yong (Salt Lake City, UT)

2012-04-03T23:59:59.000Z

369

Arginine and Conjugated Linoleic Acid Reduce Fat Mass in Rats  

E-Print Network (OSTI)

????????????????????.. 3 Nitric oxide (NO)????????????????????... 3 NOS synthesis by iNOS and obesity?????????????. 4 Stearoyl CoA desaturase?????????????????? 5 Conjugated linoleic acid?????????????????? 5 MATERIALS... on a liquid scintillation counter. 12 Fatty acid analysis Fatty acid composition in liver and plasma was determined using a fatty acid methylation procedure (FAME). Fatty acids were extracted using Folch et al (38) methods. Methylation...

Nall, Jennifer L.

2010-10-12T23:59:59.000Z

370

Experimental Study of Acid Fracture Conductivity of Austin Chalk Formation  

E-Print Network (OSTI)

Acid fracture conductivity and the effect of key variables in the etching process during acid fracturing can be assessed at the laboratory scale. This is accomplished by using an experimental apparatus that simulates acid injection fluxes comparable...

Nino Penaloza, Andrea

2013-05-01T23:59:59.000Z

371

Experimental High Velocity Acid Jetting in Limestone Carbonates  

E-Print Network (OSTI)

Acid jetting is a well stimulation technique that is used in carbonate reservoirs. It typically involves injecting acid down hole at high flow rates through small orifices which cause high velocities of acid to strike the borehole wall...

Holland, Christopher

2014-04-30T23:59:59.000Z

372

Investigations of amino acid-based surfactants at liquid interfaces  

E-Print Network (OSTI)

Herein are presented collective studies of amino acid-based surfactants, also known as lipoamino acids, at liquid interfaces. Chapter III describes an investigation of domain morphology of N-Stearoylglutamic acid (N-SGA) Langmuir monolayers...

Yang, Dengliang

2005-11-01T23:59:59.000Z

373

Naphthenic acid corrosion in refinery settings  

SciTech Connect

Naphthenic acid corrosion has been a problem in the refining industry for many years. Recently interest in this problem has grown because crudes that contain naphthenic acid are being recovered from areas which were not known to produce this type of crude, such as china, India, and Africa. New techniques for identifying naphthenic acid corrosion and chemical treatments for preventing this attack are presented. Refinery case studies include stream analysis, failure analysis, and inhibitor use. Laboratory tests to show the effect of hydrogen sulfide and phosphorus-based inhibitors are discussed.

Babaian-Kibala, E. (Nalco Chemical Co., Sugar Land, TX (United States)); Craig, H.L. Jr. (Mobil Research and Development Corp., Paulsboro, NJ (United States)); Rusk, G.L. (Mobil Oil Co., Torrance, CA (United States)); Blanchard, K.V.; Rose, T.J.; Uehlein, B.L. (Nalco Chemical Co., Paulsboro, NJ (United States)); Quinter, R.C. (Sun Co., Newtown Square, PA (United States)); Summers, M.A. (Sun Co., Marcus Hook, PA (United States))

1993-04-01T23:59:59.000Z

374

Experimental Investigation for the Effects of the Core Geometry on the Optimum Acid Flux in Carbonate Acidizing  

E-Print Network (OSTI)

Previous matrix acidizing experimental research showed that there exists an optimum acid interstitial velocity (Vi-opt) that results in the minimum volume of acid used while providing the best stimulation results. There are already several...

Jin, Xiao

2013-11-21T23:59:59.000Z

375

Aerobic Heterotrophic Bacteria Indigenous to pH 2.8 Acid Mine Water: Microscopic Examination of Acid Streamers  

Science Journals Connector (OSTI)

...streamers" found in acid coal mine drainage consist of bacteria...than one species. Acidic coal mine drainage is characterized...of 11 states that comprise Appalachia and includes numerous other coal mining areas ofthe world. The acidic...

Patrick R. Dugan; Carol B. MacMillan; Robert M. Pfister

1970-03-01T23:59:59.000Z

376

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Studying Cellulose Fiber Structure by SEM, XRD, NMR and Acid Hydrolysis. Abstract: Cotton linters were partially hydrolyzed in dilute acid and the morphology of remaining...

377

adenylic acid: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

preservation A Rauramaa A Tommila J Ltd, Espoo Reseach Centre, PO Box 44, 02271 Espoo, Finland Formic acid is known to improve silage hygienic quality. Formic acid based...

378

Formation of iron complexs from trifluoroacetic acid based liquid...  

NLE Websites -- All DOE Office Websites (Extended Search)

of iron complexs from trifluoroacetic acid based liquid chromatography mobile phases as interference ions in liquid Formation of iron complexs from trifluoroacetic acid based...

379

Copper isotope fractionation in acid mine drainage. | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Copper isotope fractionation in acid mine drainage. Copper isotope fractionation in acid mine drainage. Abstract: We surveyed the Cu isotopic composition of primary minerals and...

380

Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with...  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with covalently-bound hexafluoroisopropanol groups. Hydrogen-bond acidic functionalized carbon nanotubes (CNTs) with...

Note: This page contains sample records for the topic "nh acid rain" 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

AVTA: 2010 Honda Civic HEV with Experimental Ultra Lead Acid...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2010 Honda Civic HEV with Experimental Ultra Lead Acid Battery Testing Results AVTA: 2010 Honda Civic HEV with Experimental Ultra Lead Acid Battery Testing Results The Vehicle...

382

Effects of Continuous Triiodothyronine Infusion on Citric Acid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Continuous Triiodothyronine Infusion on Citric Acid Cycle in the Normal Immature Swine Heart under Extracorporeal Effects of Continuous Triiodothyronine Infusion on Citric Acid...

383

Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen...  

NLE Websites -- All DOE Office Websites (Extended Search)

Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen Storage. Acid Initiation of Ammonia-Borane Dehydrogenation for Hydrogen Storage. Abstract: An abstract for this...

384

Ascorbic Acid and Cancer: A Review  

Science Journals Connector (OSTI)

...groups, together with the formation of hydrogen bonds, offer a probable explanation...and Landeau, B. R. Ascorbic acid economy in surgical patients. Ann. N. Y...Culver, P. L. Horseradish peroxidase/ hydrogen peroxide-catalyzed oxidation of the...

Ewan Cameron; Linus Pauling; and Brian Leibovitz

1979-03-01T23:59:59.000Z

385

Lactic acid fermentation of crude sorghum extract  

SciTech Connect

Crude extract from sweet sorghum supplemented with vetch juice was utilized as the carbohydrate source for fermentative production of lactic acid. Fermentation of media containing 7% (w/v) total sugar was completed in 60-80 hours by Lactobacillus plantarum, product yield averaging 85%. Maximum acid production rates were dependent on pH, initial substrate distribution, and concentration, the rates varying from 2 to 5 g/liter per hour. Under limited medium supplementation the lactic acid yield was lowered to 67%. The fermented ammoniated product contained over eight times as much equivalent crude protein (N x 6.25) as the original medium. Unstructured kinetic models were developed for cell growth, lactic acid formation, and substrate consumption in batch fermentation. With the provision of experimentally determined kinetic parameters, the proposed models accurately described the fermentation process. 15 references.

Samuel, W.A.; Lee, Y.Y.; Anthony, W.B.

1980-04-01T23:59:59.000Z

386

A Direct, Biomass-Based Synthesis of Benzoic Acid: Formic Acid-Mediated Deoxygenation of the Glucose-Derived Materials Quinic Acid and Shikimic Acid  

E-Print Network (OSTI)

R.G.B and J.A.E. ). Keywords: biomass carboxylic acids 10.1002/cssc.201000111 A Direct, Biomass-Based Synthesis ofaro- matic compounds from biomass resources could provide a

2010-01-01T23:59:59.000Z

387

Heterogeneous Reactions of Epoxides in Acidic Media  

E-Print Network (OSTI)

on sulfuric acid using Ion drift-Chemical Ionization Mass Spectrometry (ID-CIMS) showed an irreversible uptake of epoxides at room temperature resulting in the formation of less volatile products like diols, organosulfates and acetals. However, at lower...

Lal, Vinita

2012-02-14T23:59:59.000Z

388

Ascorbic Acid and Cancer: A Review  

Science Journals Connector (OSTI)

...skinned individuals resident in areas of high solar intensity, such as the southern United States, South Africa, and Australia. Experimentally, the...Effects of Ascorbic Acid Ascorbate and Energy Production. Cytochromes P-450 and b5are...

Ewan Cameron; Linus Pauling; and Brian Leibovitz

1979-03-01T23:59:59.000Z

389

PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS  

E-Print Network (OSTI)

PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS A Thesis by XUEHAO TAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 2009 Major Subject: Petroleum Engineering PREDICTING TEMPERATURE BEHAVIOR IN CARBONATE ACIDIZING TREATMENTS A Thesis by XUEHAO TAN Submitted to the Office of Graduate Studies of Texas A&M University...

Tan, Xuehao

2010-01-16T23:59:59.000Z

390

Primer on lead-acid storage batteries  

SciTech Connect

This handbook was developed to help DOE facility contractors prevent accidents caused during operation and maintenance of lead-acid storage batteries. Major types of lead-acid storage batteries are discussed as well as their operation, application, selection, maintenance, and disposal (storage, transportation, as well). Safety hazards and precautions are discussed in the section on battery maintenance. References to industry standards are included for selection, maintenance, and disposal.

NONE

1995-09-01T23:59:59.000Z

391

Amplification of trace amounts of nucleic acids  

DOE Patents (OSTI)

Methods of reducing background during amplification of small amounts of nucleic acids employ careful analysis of sources of low level contamination. Ultraviolet light can be used to reduce nucleic acid contaminants in reagents and equipment. "Primer-dimer" background can be reduced by judicious design of primers. We have shown clean signal-to-noise with as little as starting material as one single human cell (.about.6 picogram), E. coli cell (.about.5 femtogram) or Prochlorococcus cell (.about.3 femtogram).

Church, George M. (Brookline, MA); Zhang, Kun (Brighton, MA)

2008-06-17T23:59:59.000Z

392

Biologically produced acid precipitable polymeric lignin  

DOE Patents (OSTI)

A water soluble, acid precipitable polymeric degraded lignin (APPL), having a molecular weight of at least 12,000 daltons, and comprising, by percentage of total weight, at least three times the number of phenolic hydroxyl groups and carboxylic acid groups present in native lignin. The APPL may be modified by chemical oxidation and reduction to increase its phenolic hydroxyl content and reduce the number of its antioxidant inhibitory side chains, thereby improving antioxidant properties.

Crawford, Don L. (Moscow, ID); Pometto, III, Anthony L. (Moscow, ID)

1984-01-01T23:59:59.000Z

393

Catalytic oxidative conversion of cellulosic biomass to formic acid and acetic acid with exceptionally high yields  

Science Journals Connector (OSTI)

Abstract Direct conversion of raw biomass materials to fine chemicals is of great significance from both economic and ecological perspectives. In this paper, we report that a Keggin-type vanadium-substituted phosphomolybdic acid catalyst, namely H4PVMo11O40, is capable of converting various biomass-derived substrates to formic acid and acetic acid with high selectivity in a water medium and oxygen atmosphere. Under optimized reaction conditions, \\{H4PVMo11O40\\} gave an exceptionally high yield of formic acid (67.8%) from cellulose, far exceeding the values achieved in previous catalytic systems. Our study demonstrates that heteropoly acids are generally effective catalysts for biomass conversion due to their strong acidities, whereas the composition of metal addenda atoms in the catalysts has crucial influence on the reaction pathway and the product selectivity.

Jizhe Zhang; Miao Sun; Xin Liu; Yu Han

2014-01-01T23:59:59.000Z

394

The inability of rats to synthesize linoleic acid from cis-2-octenoic acid  

E-Print Network (OSTI)

THE INABILITY OF RATS TO SYNTHESI2E LINOLEIC ACID FROM CIS-2-OCTENOIC ACID A Thesis Robert Eugene Anderson Submitted to the Graduate College of the Texas A g: M University in partia1 fulfillment of the requirerents for the degree of MASTER... OF SCIENCE January 1965 Major Subjeot: Bioohemistry THE INABILITY OF RATS TQ SYNTHESIEE LINOLEIC ACID FROM CIS-2E)CTENOIC ACID A Thesis Robert, Eugene Anderson Approved as to style and content by: Chair n of Committee)~ (Head of Depart~ant, Member...

Anderson, Robert Eugene

2012-06-07T23:59:59.000Z

395

E-Print Network 3.0 - acids amino acids Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

State University Collection: Biology and Medicine 77 CHE 427627 THE ORGANIC CHEMISTRY OF BIOLOGICAL MOLECULES Summary: macromolecules: carbohydrates, amino acids, nucleic...

396

E-Print Network 3.0 - acid amino acid Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

State University Collection: Biology and Medicine 77 CHE 427627 THE ORGANIC CHEMISTRY OF BIOLOGICAL MOLECULES Summary: macromolecules: carbohydrates, amino acids, nucleic...

397

E-Print Network 3.0 - acid docosahexaenoic acid Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

SAGE-Hindawi Access to Research International Journal of Alzheimer's Disease Summary: APP secretion 19. 2.2. Fatty Acids on Membrane Physical Properties and APP Processing. Fatty...

398

E-Print Network 3.0 - acid-amino acid conjugates Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

amino acids is reported with the incorporation of one example into a ... Source: Beal, Peter A. - Department of Chemistry, University of Utah Collection: Chemistry 13 An...

399

Correlation between Fibroin Amino Acid Sequence and Physical Silk Properties*  

E-Print Network (OSTI)

moth (Ephe- stia kuehniella), and Indian meal moth (Plodia inter- punctella). The amino acid repeats

?urovec, Michal

400

Transcription factor-based biosensors for detecting dicarboxylic acids  

DOE Patents (OSTI)

The invention provides methods and compositions for detecting dicarboxylic acids using a transcription factor biosensor.

Dietrich, Jeffrey; Keasling, Jay

2014-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Arabidopsis Plastid AMOS1/EGY1 Integrates Abscisic Acid Signaling to Regulate Global Gene Expression  

E-Print Network (OSTI)

genes and maintains chloroplast functionality under NH4 + stress. Importantly, abi4 mutants defective and Kronzucker, 2002; von Wirén and Merrick, 2004). Extensive studies have been car- ried out that dissect

Kronzucker, Herbert J.

402

Purification Or Organic Acids Using Anion Exchange Chromatography.  

DOE Patents (OSTI)

Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.

Ponnampalam; Elankovan (Okemos, MI)

2001-09-04T23:59:59.000Z

403

Effective hole extraction using MoO{sub x}-Al contact in perovskite CH{sub 3}NH{sub 3}PbI{sub 3} solar cells  

SciTech Connect

We report an 11.4%-efficient perovskite CH{sub 3}NH{sub 3}PbI{sub 3} solar cell using low-cost molybdenum oxide/aluminum (i.e., MoO{sub x}/Al) as an alternative top contact to replace noble/precious metals (e.g., Au or Ag) for extracting photogenerated holes. The device performance of perovskite solar cells using a MoO{sub x}/Al top contact is comparable to that of cells using the standard Ag top contact. Analysis of impedance spectroscopy measurements suggests that using 10-nm-thick MoO{sub x} and Al does not affect charge-recombination properties of perovskite solar cells. Using a thicker (20-nm) MoO{sub x} layer leads to a lower cell performance caused mainly by a reduced fill factor. Our results suggest that MoO{sub x}/Al is promising as a low-cost and effective hole-extraction contact for perovskite solar cells.

Zhao, Yixin; Nardes, Alexandre M.; Zhu, Kai, E-mail: Kai.Zhu@nrel.gov [Chemical and Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

2014-05-26T23:59:59.000Z

404

Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal Hydride (TiH2, ZrH2, MgH2, and/or CaH2) Composite Systems  

SciTech Connect

Ammonia borane (AB = NH3BH3) is one of the most attractive materials for chemical hydrogen storage due to its high hydrogen contents of 19.6 wt.%, however, impurity levels of borazine, ammonia and diborane in conjunction with foaming and exothermic hydrogen release calls for finding ways to mitigate the decomposition reactions. In this paper we present a solution by mixing AB with metal hydrides (TiH2, ZrH2, MgH2 and CaH2) which have endothermic hydrogen release in order to control the heat release and impurity levels from AB upon decomposition. The composite materials were prepared by mechanical ball milling, and their H2 release properties were characterized by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The formation of volatile products from decomposition side reactions, such as borazine (N3B3H6) was determined by mass spectrometry (MS). Sieverts type pressure-composition-temperature (PCT) gas-solid reaction instrument was adopted to observe the kinetics of the H2 release reactions of the combined systems and neat AB. In situ 11B MAS-NMR revealed a destabilized decomposition pathway. We found that by adding specific metal hydrides to AB we can eliminate the impurities and mitigate the heat release.

Choi, Young Joon; Xu, Yimin; Shaw, Wendy J.; Ronnebro, Ewa

2012-04-19T23:59:59.000Z

405

Synergy of Lewis and Brnsted Acids on Catalytic Hydrothermal Decomposition of Hexose to Levulinic Acid  

Science Journals Connector (OSTI)

Levulinic acid (LA), an important platform chemical, is regarded as one of top 12 block chemicals. ... Phosphate standard concentrate (85%), glucose (99%), and levulinic acid (99%) were purchased from Aladdin Chemistry Co., Ltd. ... Fructose, chromium(III) chloride hexahydrate, and 5-HMF (purities of these chemicals ? 98%) were purchased from J&K Chemica, Ltd. ...

Fan Yang; Jie Fu; Jing Mo; Xiuyang Lu

2013-10-15T23:59:59.000Z

406

Acid Diversion in Carbonate Reservoirs Using Polymer-Based In-Situ Gelled Acids  

E-Print Network (OSTI)

Diversion in carbonates is more difficult than in sandstones because of the ability of acid to significantly increase the permeability in carbonates as it reacts in the pore spaces and flow channels of matrix. In-situ gelled acids that are based...

Gomaa, Ahmed Mohamed Mohamed

2012-07-16T23:59:59.000Z

407

Nucleic Acid Standards - Standard Ref. Frame  

NLE Websites -- All DOE Office Websites (Extended Search)

Standard Reference Standard Reference Standard Reference Frame Supplemental Information Ideal Geometries X-PLOR Parameters Valence Geometries RNA Ontology Consortium mmCIF Resources PDBML Resources A Standard Reference Frame for the Description of Nucleic Acid Base-pair Geometry A common point of reference is needed to describe the three-dimensional arrangements of bases and base pairs in nucleic acid structures. [1]. For example, parts of a structure, which appear "normal" according to one computational scheme, may be highly unusual according to another and vice versa. It is thus difficult to carry out comprehensive comparisons of nucleic acid structures and to pinpoint unique conformational features in individual structures. In order to resolve these issues, a group of

408

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer were selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide where the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures to an agricultural site is also disclosed.

Bonsignore, P.V.; Coleman, R.D.

1994-11-01T23:59:59.000Z

409

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene and polyethylene glycols, propylene and polypropylene glycols, P-dioxanone, 1,5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2% by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, Patrick V. (Joliet, IL); Coleman, Robert D. (Wheaton, IL)

1994-01-01T23:59:59.000Z

410

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer is described made from monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene glycol, propylene glycol, P-dioxanone, 1,5 dioxepan-2-one, 1,4-oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2 by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, P.V.; Coleman, R.D.

1996-10-08T23:59:59.000Z

411

Water and UV degradable lactic acid polymers  

DOE Patents (OSTI)

A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene glycol, propylene glycol, P-dioxanone, 1,5 dioxepan-2-one, 1,4-oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high molecular weight polyethylene oxide wherein the high molecular weight polyethylene oxide is present in the range of from about 2 by weight to about 50% by weight, suitable for films. A method of applying an active material selected from the class of seeds, seedlings, pesticides, herbicides, fertilizers and mixtures thereof to an agricultural site is also disclosed.

Bonsignore, Patrick V. (Joliet, IL); Coleman, Robert D. (Wheaton, IL)

1996-01-01T23:59:59.000Z

412

Photoenhanced anaerobic digestion of organic acids  

DOE Patents (OSTI)

A process is described for rapid conversion of organic acids and alcohols anaerobic digesters into hydrogen and carbon dioxide, the optimal precursor substrates for production of methane. The process includes addition of photosynthetic bacteria to the digester and exposure of the bacteria to radiant energy (e.g., solar energy). The process also increases the pH stability of the digester to prevent failure of the digester. Preferred substrates for photosynthetic bacteria are the organic acid and alcohol waste products of fermentative bacteria. In mixed culture with methanogenic bacteria or in defined co-culture with non-aceticlastic methanogenic bacteria, photosynthetic bacteria are capable of facilitating the conversion or organic acids and alcohols into methane with low levels of light energy input.

Weaver, Paul F. (Golden, CO)

1990-01-01T23:59:59.000Z

413

E-Print Network 3.0 - acid analysis including Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

predict the relative acid strength of a set... section. Findings Our analysis led to the identification of four distinct mental models of acid and acid... models of acid and acid...

414

Relative reactivities of solid benzoic acids  

E-Print Network (OSTI)

was always the acid salt, (RBZA) HK. For the reaction, RBZAH + Z R'BZAK, where R g R', the products were those predicted from Hammett o-constants for R and R'. Observations on the mode of reaction and free energy changes are given. The desirability... reaction series chosen was that. one most directly related to the Hammett substituent constants; namely, the reactions of various m- or p- monosubstituted benzoic acids with m- or p-monosubstituted potas- sium benzoate salts. CHAPTER Il RES ULTS...

Warwas, Edwin James

2012-06-07T23:59:59.000Z

415

Acid mine water aeration and treatment system  

DOE Patents (OSTI)

An in-line system is provided for treating acid mine drainage which basically comprises the combination of a jet pump (or pumps) and a static mixer. The jet pump entrains air into the acid waste water using a Venturi effect so as to provide aeration of the waste water while further aeration is provided by the helical vanes of the static mixer. A neutralizing agent is injected into the suction chamber of the jet pump and the static mixer is formed by plural sections offset by 90 degrees.

Ackman, Terry E. (Finleyville, PA); Place, John M. (Bethel Park, PA)

1987-01-01T23:59:59.000Z

416

Effect of Conjugated Linoleic Acid or Oleic Acid Addition on Fatty Acid Composition Profiles of Poultry Meat  

E-Print Network (OSTI)

on the omega-6 fatty acid accumulation in broiler chicken breast and thigh meat. Eight broilers from each treatment were processed at 4 and 6 weeks of age, respectively. Regarding the diets containing five different fat sources, broiler chickens fed CLA...

Shin, Dae Keun

2011-08-08T23:59:59.000Z

417

A method to attenuate U(VI) mobility in acidic waste plumes using humic acids  

SciTech Connect

Acidic uranium (U) contaminated plumes have resulted from acid-extraction of plutonium during the Cold War and from U mining and milling operations. A sustainable method for in-situ immobilization of U under acidic conditions is not yet available. Here, we propose to use humic acids (HAs) for in-situ U immobilization in acidic waste plumes. Our laboratory batch experiments show that HA can adsorb onto aquifer sediments rapidly, strongly and practically irreversibly. Adding HA greatly enhanced U adsorption capacity to sediments at pH below 5.0. Our column experiments using historically contaminated sediments from the Savannah River Site under slow flow rates (120 and 12 m/y) show that desorption of U and HA were non-detectable over 100 pore-volumes of leaching with simulated acidic groundwaters. Upon HA-treatment, 99% of the contaminant [U] was immobilized at pH < 4.5, compared to 5% and 58% immobilized in the control columns at pH 3.5 and 4.5, respectively. These results demonstrated that HA-treatment is a promising in-situ remediation method for acidic U waste plumes. As a remediation reagent, HAs are resistant to biodegradation, cost effective, nontoxic, and easily introducible to the subsurface.

Wan, J.; Dong, W.; Tokunaga, T.K.

2011-02-01T23:59:59.000Z

418

14 Engineering Drive Hanover, NH 03755  

E-Print Network (OSTI)

of their sponsors, the CEDC staff, faculty advisors and mentors, and the technical staff of Thayer's CAD facility Formula Racing Dartmouth Organic Farm Graphicast Maponics Norwich Technologies Optra Inc. Dr. Joseph Technologies Terry Smith Solaflect Energy Matt Strand Victor Technologies Walvisstaart B.V. Dr. Mitchell Wolf

419

Preparation of Some Substituted Terephthalic Acids  

E-Print Network (OSTI)

, with the dilithiation of 2,5-dibromotoluene with t-BuLi at ­78 8C, followed by reaction with dry ice and subsequent acid (3) is esterified,[9] then side-chain brominated with NBS, to produce dimethyl 2

Benin, Vladimir

420

Acid dyes removal using low cost adsorbents  

Science Journals Connector (OSTI)

Dyestuff production units and dyeing units have always had pressing need techniques that allow economical pre-treatment for colour in the effluent. The effectiveness of adsorption for dye removal from wastewaters has made it an ideal alternative to other expensive treatment options. Removal of acid green

A.H. Aydin; Y. Bulut; O. Yavuz

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Heterogeneous organic acid uptake on soot surfaces  

E-Print Network (OSTI)

observed the interaction between a number of carboxylic acids and soot from different fuel sources and formation mechanisms. A low pressure fast flow reactor was used to control the contact between the solid phase soot and gas phase organics, while chemical...

Levitt, Nicholas Paul

2009-05-15T23:59:59.000Z

422

MFR PAPER 1339 Phosphonoacetic Acid Inhibition of  

E-Print Network (OSTI)

phosphonoace- tic acid (PAA), functions specifically by inhibiting the herpesvirus coded DNA dependent DNA polymerase in its process of replicating virus DNA (Mao and Robishaw, [975). In tissue culture systems, PAA and Overby, 1975). In all cases, the effec- tive tissue culture dose of PAA which inhibited herpesvirus

423

Corrosion free phosphoric acid fuel cell  

DOE Patents (OSTI)

A phosphoric acid fuel cell with an electrolyte fuel system which supplies electrolyte via a wick disposed adjacent a cathode to an absorbent matrix which transports the electrolyte to portions of the cathode and an anode which overlaps the cathode on all sides to prevent corrosion within the cell.

Wright, Maynard K. (Bethel Park, PA)

1990-01-01T23:59:59.000Z

424

Detection of nucleic acid sequences by invader-directed cleavage  

DOE Patents (OSTI)

The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The 5' nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof. The present invention further relates to methods and devices for the separation of nucleic acid molecules based by charge.

Brow, Mary Ann D. (Madison, WI); Hall, Jeff Steven Grotelueschen (Madison, WI); Lyamichev, Victor (Madison, WI); Olive, David Michael (Madison, WI); Prudent, James Robert (Madison, WI)

1999-01-01T23:59:59.000Z

425

Producing a trimethylpentanoic acid using hybrid polyketide synthases  

DOE Patents (OSTI)

The present invention provides for a polyketide synthase (PKS) capable of synthesizing trimethylpentanoic acid. The present invention also provides for a host cell comprising the PKS and when cultured produces the trimethylpentanoic acid. The present invention also provides for a method of producing the trimethylpentanoic acid, comprising: providing a host cell of the present invention, and culturing said host cell in a suitable culture medium such that the trimethylpentanoic acid is produced, optionally isolating the trimethylpentanoic acid, and optionally, reducing the isolated trimethylpentanoic acid into a trimethylpentanol or an iso-octane.

Katz, Leonard; Fortman, Jeffrey L; Keasling, Jay D

2014-10-07T23:59:59.000Z

426

Investigating the Effect of Oil Saturation on Acid Propagation during Matrix Acidization of Carbonate Rocks  

E-Print Network (OSTI)

The existence of an optimum injection rate for wormhole propagation, and face dissolution at low injection rates during matrix acidizing are well established. However, little has been documented that describes how the presence of residual oil...

Kumar, Rahul Pradeep

2014-01-02T23:59:59.000Z

427

Effects of Acid Additives on Spent Acid Flowback through Carbonate Cores  

E-Print Network (OSTI)

Matrix acidizing is a well stimulation technique used to remove formation damage in the near wellbore region. But it comes with an associated set of challenges such as corrosion of the tubulars and iron precipitation in the formation. To counter...

Nasir, Ehsaan Ahmad

2012-07-16T23:59:59.000Z

428

Modeling Acid Transport and Non-Uniform Etching in a Stochastic Domain in Acid Fracturing  

E-Print Network (OSTI)

Success of acid fracturing depends on uneven etching along the fracture surfaces caused by heterogeneities such as variations in local mineralogy and variations in leakoff behavior. The heterogeneities tend to create channeling characteristics...

Mou, Jianye

2010-10-12T23:59:59.000Z

429

A study of the distribution of fatty acids in the system: cottonseed oil-oleic acid-isopropanol-water  

E-Print Network (OSTI)

A STDDY OF THI' DISTBIRliTION OF FATTY ACIDS IN THE SYSTEM: COTTONSFED OIL - OLEIC ACID - ISOPBOPANOL - YlATEB A Thesis Frank E. Lomb January 1948 Approval as to style and content recommended: Head ' t Te epartm nt of hem cal Engineer ng A... STUDY OF THE DISTHIBUTION OF FATTY ACIDS IN THE SYSTEM: COTTONSEED OIL - OLEIC ACID - ISOFHOPANOL - WATER A Thesis By Frank E. Lamb January 1948 A STUDY QF TNE DISTRIBUTION OF FATTY ACIDS IN TRE SYSTEM: COTTONSEED OII, - OIEIC ACID - ISOPROPANOL...

Lamb, Frank E

2012-06-07T23:59:59.000Z

430

A First Look at Yeast Fatty Acid Synthase  

NLE Websites -- All DOE Office Websites (Extended Search)

A First Look at Yeast Fatty Acid Synthase Print A First Look at Yeast Fatty Acid Synthase Print Fatty acids are the major constituents of eukaryotic and bacterial cellular membranes. They are used for functionally important post-translational protein modifications, and chains of fatty acids are the main storage compartments of an organism's chemical energy. Fatty acid synthesis is carried out by fatty acid sythase (FAS), which catalyzes cycles of multistep chemical reactions that are essentially the same in all organisms. FAS uses one acetyl-coenzyme A (CoA) and seven malonyl-CoA molecules to synthesize the 16-carbon palmitic acid, the most abundant fatty acid in eukaryotes. Now, for the first time, a group of researchers has determined the atomic structure of yeast Saccharomyces cerevisiae FAS derived from two crystals of the enzyme, using data collected at ALS Beamlines 8.2.1 and 8.2.2, as well as other synchrotron facilities.

431

Acid-catalyzed dehydrogenation of amine-boranes  

NLE Websites -- All DOE Office Websites (Extended Search)

Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. June 25, 2013 Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. Available for thumbnail of Feynman Center (505) 665-9090 Email Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric product. The method of dehydrogenating amine-boranes may be used to generate hydrogen for power generation sources such as fuel cells. U.S. Patent No.: 7,645,902 (DOE S-104,909) Patent Application Filing Date: June 22, 2006

432

A First Look at Yeast Fatty Acid Synthase  

NLE Websites -- All DOE Office Websites (Extended Search)

A First Look at Yeast Fatty Acid Synthase Print A First Look at Yeast Fatty Acid Synthase Print Fatty acids are the major constituents of eukaryotic and bacterial cellular membranes. They are used for functionally important post-translational protein modifications, and chains of fatty acids are the main storage compartments of an organism's chemical energy. Fatty acid synthesis is carried out by fatty acid sythase (FAS), which catalyzes cycles of multistep chemical reactions that are essentially the same in all organisms. FAS uses one acetyl-coenzyme A (CoA) and seven malonyl-CoA molecules to synthesize the 16-carbon palmitic acid, the most abundant fatty acid in eukaryotes. Now, for the first time, a group of researchers has determined the atomic structure of yeast Saccharomyces cerevisiae FAS derived from two crystals of the enzyme, using data collected at ALS Beamlines 8.2.1 and 8.2.2, as well as other synchrotron facilities.

433

Mid-ultraviolet Light-Emitting Diode Detects Dipicolinic Acid  

Science Journals Connector (OSTI)

Dipicolinic acid (DPA, 2,6-pyridinedicarboxylic acid) is a substance uniquely present in bacterial spores such as that from anthrax (B. anthracis). It is known that DPA can be...

Li, Qingyang; Dasgupta, Purnendu K; Temkin, Henryk; Crawford, M H; Fischer, A J; Allerman, A A; Bogart, K H A; Lee, S R

2004-01-01T23:59:59.000Z

434

TRL Acid and Solvent Wet Processing Rules and Guidelines  

E-Print Network (OSTI)

: General rules and guidelines for wet chemical processing in TRL. Author: KFlo hood and when transporting or handling chemicals. An acid-proof apron, sleeveTRL Acid and Solvent Wet Processing Rules and Guidelines Purpose

Reif, Rafael

435

Development and testing of an advanced acid fracture conductivity apparatus  

E-Print Network (OSTI)

wells. Acid fracturing is a standard practice to increase the production rate and to improve ultimate recovery in carbonate reservoirs. There have been successful cases in most carbonate reservoirs around the world. However acid fracture performance...

Zou, ChunLei

2006-08-16T23:59:59.000Z

436

Choline for neutralizing naphthenic acid in fuel and lubricating oils  

SciTech Connect

A method is described of neutralizing at least a portion of the naphthenic acids present in fuel and lubricating oils which contain naphthenic acids which comprises treating these oils with a neutralizing amount of choline.

Ries, D.G.; Roof, G.L.

1986-07-15T23:59:59.000Z

437

Identification of petroleum acids in Liaohe super-heavy oil  

Science Journals Connector (OSTI)

In this study, petroleum acids were extracted from the super-heavy oil of Liaohe oilfield, North-east China, by using acetic acid, and their structural components and properties were investigated by using FT-I...

Bencheng Wu; Jianhua Zhu

2009-12-01T23:59:59.000Z

438

Integrated 3D Acid Fracturing Model for Carbonate Reservoir Stimulation  

E-Print Network (OSTI)

in integrating fracture propagation, acid transport and dissolution, and well performance models in a seamless fashion for acid fracturing design. In this new approach, the fracture geometry data of a hydraulic fracture is first obtained from commercial models...

Wu, Xi

2014-06-23T23:59:59.000Z

439

High Temperature Fuel Cell (Phosphoric Acid) Manufacturing R...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fuel Cell (Phosphoric Acid) Manufacturing R&D High Temperature Fuel Cell (Phosphoric Acid) Manufacturing R&D Presented at the NREL Hydrogen and Fuel Cell Manufacturing R&D Workshop...

440

Nucleic acid based fluorescent sensor for copper detection  

DOE Patents (OSTI)

A nucleic acid enzyme responsive to copper, comprising an oligonucleotide comprising a nucleotide sequence of SEQ ID NO:1, wherein the nucleic acid enzyme is not self-cleaving.

Lu, Yi; Liu, Juewen

2013-04-02T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Conversion of carboxylate salts to carboxylic acids via reactive distillation.  

E-Print Network (OSTI)

??The purpose of this study is to convert carboxylate salts (e.g. calcium acetate, propionate, and butyrate) into carboxylic acids (e.g., acetic, propionic, and butyric acids). (more)

Williamson, Shelly Ann

2012-01-01T23:59:59.000Z

442

Influence of boric acid additive size on green lubricant performance  

Science Journals Connector (OSTI)

...towards green manufacturing processes, there...boric acid powder additives with canola oil...change present manufacturing process lines...powder-based lubricant additives As conceptually...of boric acid additive size on green...towards green manufacturing processes, there...

2010-01-01T23:59:59.000Z

443

The Effect of Heterogeneity on Matrix Acidizing of Carbonate Rocks  

E-Print Network (OSTI)

In matrix acidizing, the goal is to dissolve minerals in the rock to increase well productivity. This is accomplished by injecting an application-specific solution of acid into the formation at a pressure between the pore pressure and fracture...

Keys, Ryan S.

2010-07-14T23:59:59.000Z

444

Kinetic evaluation of the esterification of fatty acids to biodiesel  

Science Journals Connector (OSTI)

The free fatty acids of cotton seed oil were processed with methanol and ethanol into the corresponding alkyl fatty esters in the presence of diluted sulfuric acid. The products characterized as biodiesels pre...

Frederico A. D. Arajo; Sonia V. Pereira

2012-10-01T23:59:59.000Z

445

The determination of potential acidity in overburden sediments  

E-Print Network (OSTI)

Weathered Overburden Samples. Determination of Total Sulfur by LECO. Determination of Non-Sulfate Sulfur by LECO. Pyritic Iron Using the ASTM Method Potential Acidity Using a Rapid Oxidation Technique - Original Method. Potential Acidity Using a Rapid... the Sample. The Addition of Excess H 02. Catalysing the Decomposition of Excess H202. Leaching the Oxidized Sample with CaC12. Comparison of Potential Acidity Methods. F and T Tests. Potential Acidity of Weathered vs. Unweathered Samples. Total S...

O'Shay, Tracey Ann

2012-06-07T23:59:59.000Z

446

The biodegradation of organic acids by a heterogeneous bacterial culture  

E-Print Network (OSTI)

- tion of fatty acids results in multiple cleavage of the molecules to form shorter chain acids. It has been found (1I) that ethanoic and butanoic are the principle volatile acids present during digestion of sewage sludge while propanoic and pentanoic... was developed from a heterogeneous culture found in a sewage plant effluent. The culture was developed in a bench scale continuous flow activated. sludge reactor, and individual studies were made in a bench scale aerated batch reactor. The acids used were...

Tyer, Bobby Ray

1968-01-01T23:59:59.000Z

447

Nucleic Acid Standards - Sugar and Phosphate Constituents  

NLE Websites -- All DOE Office Websites (Extended Search)

Sugar and Phosphate Constituents Sugar and Phosphate Constituents The following tables contain the complete references for the structures used in a statistical survey of well-refined mononucleoside, mononucleotide, dinucleoside monophosphate, and trinucleoside diphosphate crystal structures found in the Cambridge Structural Database and the Nucleic Acid Database that appeared in The Journal of the American Chemical Society (Anke Gelbin, Bohdan Schneider, Lester Clowney, Shu-Hsin Hsieh, Wilma K. Olson, and Helen M. Berman. "Geometric Parameters in Nucleic Acids: Sugar Phosphate Constituents" (1996) 118, 519-529.) Table 1: References for Mononucleoside and Mononucleotide Structures Table 2: References for Dinucleoside Monophosphate and Trinucleoside Diphosphate Structures The following tables are summaries of the bond lengths, angles, and torsion

448

Improved Processes to Remove Naphthenic Acids  

NLE Websites -- All DOE Office Websites (Extended Search)

Improved Processes to Remove Naphthenic Acids Improved Processes to Remove Naphthenic Acids Final Technical Report (From October 1, 2002 to September 30, 2005) Principle Authors Aihua Zhang, Qisheng Ma, Kangshi Wang, Yongchun Tang (co-PI), William A. Goddard (PI), Date Report was issued: December 9, 2005 DOE Award number: DE-FC26-02NT15383 Name and Address of Submitting Organization California Institute of Technology 1200 East California Blvd., Pasadena, CA91125 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any

449

Critical review of naphthenic acid corrosion  

SciTech Connect

Naphthenic acid corrosion continues to be a reliability issue in refinery distillation units. A review of the subject is presented herein with special focus on field and laboratory data and on areas where research is needed. The review shows that several parameters are known to affect the corrosion process and their individual effect on crude corrosivity are somewhat understood. However, their combined effect is still subject to much controversy. The determination of a critical factor--naphthenic acid content--is still not standardized. It is shown herein that, by arranging the literature findings into three groups (1) furnace tubes and transfer lines, (2) vacuum column and (3) side cut piping, a better agreement of the literature data is achieved.

Tebbal, S. [SET Labs., Inc., Stafford, TX (United States)

1999-11-01T23:59:59.000Z

450

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance. 6 figs.

Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

1998-06-30T23:59:59.000Z

451

Sulfate and acid resistant concrete and mortar  

DOE Patents (OSTI)

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.

Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

1998-01-01T23:59:59.000Z

452

Reference electrode for strong oxidizing acid solutions  

DOE Patents (OSTI)

A reference electrode for the measurement of the oxidation-reduction potentials of solutions is especially suitable for oxidizing solutions such as highly concentrated and fuming nitric acids, the solutions of nitrogen oxides, N.sub.2 O.sub.4 and N.sub.2 O.sub.5, in nitric acids. The reference electrode is fabricated of entirely inert materials, has a half cell of Pt/Ce(IV)/Ce(III)/70 wt. % HNO.sub.3, and includes a double-junction design with an intermediate solution of 70 wt. % HNO.sub.3. The liquid junctions are made from Corning No. 7930 glass for low resistance and negligible solution leakage.

Rigdon, Lester P. (Livermore, CA); Harrar, Jackson E. (Castro Valley, CA); Bullock, Sr., Jack C. (Pleasanton, CA); McGuire, Raymond R. (Brentwood, CA)

1990-01-01T23:59:59.000Z

453

Lightweight, durable lead-acid batteries  

DOE Patents (OSTI)

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar (Lenoir City, TN); An, Ke (Knoxville, TX); Kiggans, Jr., James O. (Oak Ridge, TN); Dudney, Nancy J. (Knoxville, TN); Contescu, Cristian I. (Knoxville, TN); Baker, Frederick S. (Oak Ridge, TN); Armstrong, Beth L. (Clinton, TN)

2011-09-13T23:59:59.000Z

454

Lightweight, durable lead-acid batteries  

SciTech Connect

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar; An, Ke; Kiggans, Jr., James O; Dudney, Nancy J; Contescu, Cristian I; Baker, Frederick S; Armstrong, Beth L

2013-05-21T23:59:59.000Z

455

Nucleic acids, compositions and uses thereof  

DOE Patents (OSTI)

The subject invention provides at least one nucleic acid sequence encoding an aldouronate-utilization regulon isolated from Paenibacillus sp. strain JDR-2, a bacterium which efficiently utilizes xylan and metabolizes aldouronates (methylglucuronoxylosaccharides). The subject invention also provides a means for providing a coordinately regulated process in which xylan depolymerization and product assimilation are coupled in Paenibacillus sp. strain JDR-2 to provide a favorable system for the conversion of lignocellulosic biomass to biobased products. Additionally, the nucleic acid sequences encoding the aldouronate-utilization regulon can be used to transform other bacteria to form organisms capable of producing a desired product (e.g., ethanol, 1-butanol, acetoin, 2,3-butanediol, 1,3-propanediol, succinate, lactate, acetate, malate or alanine) from lignocellulosic biomass.

Preston, III, James F. (Micanopy, FL); Chow, Virginia (Gainesville, FL); Nong, Guang (Gainesville, FL); Rice, John D. (Gainesville, FL); St. John, Franz J. (Baltimore, MD)

2012-02-21T23:59:59.000Z

456

Nucleic acid compositions and the encoding proteins  

SciTech Connect

The subject invention provides at least one nucleic acid sequence encoding an aldouronate-utilization regulon isolated from Paenibacillus sp. strain JDR-2, a bacterium which efficiently utilizes xylan and metabolizes aldouronates (methylglucuronoxylosaccharides). The subject invention also provides a means for providing a coordinately regulated process in which xylan depolymerization and product assimilation are coupled in Paenibacillus sp. strain JDR-2 to provide a favorable system for the conversion of lignocellulosic biomass to biobased products. Additionally, the nucleic acid sequences encoding the aldouronate-utilization regulon can be used to transform other bacteria to form organisms capable of producing a desired product (e.g., ethanol, 1-butanol, acetoin, 2,3-butanediol, 1,3-propanediol, succinate, lactate, acetate, malate or alanine) from lignocellulosic biomass.

Preston, III, James F.; Chow, Virginia; Nong, Guang; Rice, John D.; St. John, Franz J.

2014-09-02T23:59:59.000Z

457

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

NLE Websites -- All DOE Office Websites (Extended Search)

Nitric Acid 34. Sulfuric acid... .5 will not be accepted through this program. Heavy metal, toxic, acidic (without solvents) and basic wastes should... . Mercaptans 4. ......

458

E-Print Network 3.0 - acid improves hypertriglyceridemia Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

contain unusual fatty acids that are valuable... p. 1 Lipid signals: jasmonic acid & green leaf volatiles i. Jasmonic acid and jasmonates... agronomic species i) diffent...

459

E-Print Network 3.0 - acid promotes detoxification Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Bile acid Detoxification, Synthesis... acid transport, synthesis and detoxification. The LCA-induced altered enzymes and transporter... ;Regulation of bile acid detoxification and...

460

E-Print Network 3.0 - acid operational experiences Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

acetic acid, propionic acid, butyric acid, valeric ... Source: Manning, Sturt - Cornell Tree-Ring Laboratory, Cornell University Collection: Environmental Sciences and Ecology 34...

Note: This page contains sample records for the topic "nh acid rain" 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

E-Print Network 3.0 - acid requirements based Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

(Eichhornia crassipes) to levulinic acid (LA) through an acid-catalysed hydrolysis reaction. LA has been... OHOH OH Diphenolic acid O CH3 Methyltetrahydrofuran O O OHNH2 ......

462

E-Print Network 3.0 - aminocyclopropane carboxylic acid Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

acid, which primarily loses the ele... -methylaziridinecarboxylic acid via an internal SN2 pathway, rather than protonated vinylglycine. Protonated amino acids... readily expel...

463

E-Print Network 3.0 - ammonia acetic acid Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

fluminic acid, or hydrogen. NITRIC ACID with: acetic... with: water, carbon dioxide, carbon tetrachloride, and other chlorinated hydrocarbons. ACETIC ACID with......

464

E-Print Network 3.0 - aromatic sulfonic acids Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

examples: Methane sulfonic... acid Ethane sulfonic acid 1-Propane sulfonic acid 1-Butane ... Source: Wikswo, John - Department of Physics and Astronomy, Vanderbilt University...

465

Naphthenic acid corrosion in the refinery  

SciTech Connect

Field tests and laboratory studies of refinery process streams are presented. The effects of temperature, velocity and physical state were studied with respect to alloy selection for corrosion resistant service. The amount of molybdenum in the austenitic stainless steel alloys is the dominant factor in conferring corrosion resistance. The Naphthenic Acid Corrosion Index (NACI) is useful in assessing the severity of corrosion under a variety of circumstances.

Craig, H.L. Jr. [Mobil Research and Development Corp., Paulsboro, NJ (United States)

1995-11-01T23:59:59.000Z

466

Alkaline earth cation extraction from acid solution  

DOE Patents (OSTI)

An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of diluent, free-flowing and particulate, and comprises a Crown ether that is a 4,4'(5')[C.sub.4 -C.sub.8 -alkylcyclohexano]18-Crown-6 dispersed on an inert substrate material.

Dietz, Mark (Elmhurst, IL); Horwitz, E. Philip (Naperville, IL)

2003-01-01T23:59:59.000Z

467

The Effect of Supercritical Fluids on Solid Acid Catalyst Alkylation  

Science Journals Connector (OSTI)

Box 1625, Idaho Falls, Idaho 83415-2208, and Marathon-Ashland Petroleum LLC, P.O. ... The liquid acid processes present serious safety and environmental concerns in both the transport and storage of concentrated liquid acids and the disposal of acid?oil sludges. ...

Daniel M. Ginosar; David N. Thompson; Kyle Coates; David J. Zalewski

2002-05-15T23:59:59.000Z

468

The Fixation of Phosphoric Acid by the Soil  

E-Print Network (OSTI)

KAS AtiRICULTURAL EXPERIMENT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BII BULLETIN NO. 304 eddent CEMBER, 1922 'ION OF PHOSPI ACID BY THE SOIL B. YOUNGBLOOD, DIRECTOR, COLLEGE STATION, BRAZOS COUNTY, TEXA STATION STAFF... ............................................... '7 ............................................... ;t of Acid 7' ........................................... of Ignition 8 ........................................ on by Minerals 10 ...................... on of Phosphoric Acid of Fertilizers 11...

Fraps, G. S. (George Stronach)

1922-01-01T23:59:59.000Z

469

How is ferulic acid transported into the Golgi apparatus? Lignin  

E-Print Network (OSTI)

How is ferulic acid transported into the Golgi apparatus? Lignin polymerization is also influenced]. These ferulic acid residues are thought to initiate lignin polymerization. It is not known how ferulic acid in the cell wall field, but also creates novel opportunities for the manipulation of lignin in crop plants

470

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid. 4 figs.

Horwitz, E.P.; Dietz, M.L.

1994-09-06T23:59:59.000Z

471

Production of carboxylic acid and salt co-products  

DOE Patents (OSTI)

This invention provide processes for producing carboxylic acid product, along with useful salts. The carboxylic acid product that is produced according to this invention is preferably a C.sub.2-C.sub.12 carboxylic acid. Among the salts produced in the process of the invention are ammonium salts.

Hanchar, Robert J.; Kleff, Susanne; Guettler, Michael V.

2014-09-09T23:59:59.000Z

472

EGVII endoglucanase and nucleic acids encoding the same  

DOE Patents (OSTI)

The present invention provides a novel endoglucanase nucleic acid sequence, designated egl7, and the corresponding EGVII amino acid sequence. The invention also provides expression vectors and host cells comprising a nucleic acid sequence encoding EGVII, recombinant EGVII proteins and methods for producing the same.

Dunn-Coleman, Nigel; Goedegebuur, Frits; Ward, Michael; Yao, Jian

2014-02-25T23:59:59.000Z

473

Process for the extraction of strontium from acidic solutions  

DOE Patents (OSTI)

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid.

Horwitz, E.P.; Dietz, M.L.

1993-01-01T23:59:59.000Z

474

The Effects of Initial Condition of Fracture Surfaces, Acid Spending, and Type on Conductivity of Acid Fracture  

E-Print Network (OSTI)

. Another area of interest is the variation of conductivity along the fracture due to acid spending. We also investigated the contact time, acid system type, and treatment temperature effects on conductivity using San Andres dolomite cores. The results...

Almomen, Ali Mansour

2013-07-24T23:59:59.000Z

475

Naphthenic acid corrosion in synthetic fuels production  

SciTech Connect

Serious corrosion damage to carbon steel piping in a fractionation unit associated with synthetic fuels production has been ascribed to the presence of naphthenic acids. Investigation of the problem revealed total acids numbers (TAN) ranging from 8--12mg KOH/g in the feed to the unit. Damage typically occurred in the temperature range 180--240 C and manifested as localized pitting, preferential weld corrosion, general wall thinning and end-grain attack. Filming amine corrosion inhibitors designed for refinery overhead systems have been proven ineffective and high temperature phosphate-based inhibitors could not be used due to potential catalyst poisoning in downstream refinery units. Coupon exposures indicated corrosion rates in the order of 2 mm/y on carbon steel in a reboiler line as well as pitting to austenitic stainless steel type UNS S30403. Line replacement in austenitic stainless steel UNS S31603 has been proven effective. The performance of this alloy is mainly ascribed to its molybdenum content. The absence of sulfur in the feed to the unit is also contributing to the alloy performance despite the extremely high total acid numbers.

Bruyn, H.I. de [Mossgas Ltd., Mossel Bay (South Africa)

1998-12-31T23:59:59.000Z

476

Cyclobutane amino acids and peptidomimetics, parallel catalyst screening for aziridination  

E-Print Network (OSTI)

takes the form: -2rt2[(ha*)2Vt t +. . . +2hka*b*Ut2] . . Page 65 66 67 68 69 74 75 76 77 2. 10 Hydrogen coordinates ( x 104 ) and isotropic displacement parameters (A2 x 103) for 40. . 78 3. 1 Results from a 96-weB plate 97 3. 2...C, NHBOC (i) cyanuric fluoride pyridine, CHsClr (ii) isopropylamine EtsN, CHaCta 'PrHN "c~NHBOC 38 (i) cyanuric fluoride pyridine, CHrCta HOaC, (ii) isopropylamine NHBOC 36 0 'PrNH NHBOC 39 Scheme 2. 10 Synthesis of tripeptide mimic 40...

Li, Shih-ming

2012-06-07T23:59:59.000Z

477

Effects of the mycotoxin penicillic acid on electrogenic sodium transport  

E-Print Network (OSTI)

. Maximal 1nh1- bition of sodium transport (89. 7%) by PA was achieved after 40 minutes reaction time. The addition of d1thiothreitol to the test med1a prevented short-c1rc1ut current inhibition 1ndicating that the mode of PA action on sod1um flux may..., and 45 minutes . 47 15 C-PA binding to 1ntact toad urigry bladder with and without addit1on of DTT to the C-PA before bladder app1 i cati on. . . 48 Relationship of radiotoxin binding to intact bladder with respect to inhibition of the sod1um pump...

Wilczynski, Teresa Anne

2012-06-07T23:59:59.000Z

478

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

479

Smoking Rain Clouds over the Amazon  

Science Journals Connector (OSTI)

...processes affect the water cycle, the pollution...the dynamics of atmospheric circulation. Several...concentrations of cloud condensation nuclei (CCN) in the...transport cloud water in deep convection...concentrations result in recovery of drop size. However...background. Stronger atmospheric instability and a...

M. O. Andreae; D. Rosenfeld; P. Artaxo; A. A. Costa; G. P. Frank; K. M. Longo; M. A. F. Silva-Dias

2004-02-27T23:59:59.000Z

480

Sahel Will Suffer Even if Rains Come  

Science Journals Connector (OSTI)

...Carnegie-Mellon University. Eli Reshotko, engineering, Case Western Reserve University; Domi-nick J. Sanchini, Rocketdyne Divi-sion, Rockwell International Corp., Canoga Park, Calif.; John H. Schmertmann, Schmertmann & Crapps, Inc...

JOHN WALSH

1984-05-04T23:59:59.000Z

Note: This page contains sample records for the topic "nh acid rain" 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

Smoking Rain Clouds over the Amazon  

Science Journals Connector (OSTI)

...plume over an active fire). Our results...aerosols, a large fraction of which are capable...regions, where it can release additional latent...smoke and heat from fires. They receive conflicting...greater latent heat release higher in the clouds...reported from a savanna fire (34...

M. O. Andreae; D. Rosenfeld; P. Artaxo; A. A. Costa; G. P. Frank; K. M. Longo; M. A. F. Silva-Dias

2004-02-27T23:59:59.000Z

482

Singing in the Rain 26 January 2011  

E-Print Network (OSTI)

Hansen spoke as an Expert Witness. His testimony was a disgrace in that he asserted global warming is so of simulating global temperature change, predicting a warming that so far is about 1/3 greater than observations severe a problem that actions intended to damage the power station (or any other coal- fired power

Hansen, James E.

483

Type II Diacylglycerol Acyltransferase from Claviceps purpurea with Ricinoleic Acid, a Hydroxyl Fatty Acid of Industrial Importance, as Preferred Substrate  

Science Journals Connector (OSTI)

...total fatty acids in sclerotium oil (2). Ricinoleic acid, a...CpDGAT2 cDNA were obtained using a Marathon cDNA amplification kit (BD...purified from Ricinus communis oil according to Donaldson (11...fatty acids in the sclerotium oil of this fungus (2). DGAT2...

Ioannis Mavraganis; Dauenpen Meesapyodsuk; Patricia Vrinten; Mark Smith; Xiao Qiu

2009-12-18T23:59:59.000Z

484

Dosage de la lignine insoluble en milieu acide : influence du prtraitement par hydrolyse acide sur la lignine Kla-  

E-Print Network (OSTI)

Dosage de la lignine insoluble en milieu acide : influence du prétraitement par hydrolyse acide sur la lignine Kla- son de bois et de paille Bernard MONTIES LN.R.A., Laboratoire de Chimie biologique et la lignine insoluble dans l'acide sulfurique concentré, lignine Klason, est décrit : il comporte une

Paris-Sud XI, Université de

485

Rate dependent finite deformation stressstrain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl  

E-Print Network (OSTI)

Rate dependent finite deformation stress­strain behavior of an ethylene methacrylic acid copolymer and an ethylene methacrylic acid butyl acrylate copolymer S. Deschanel a,*, B.P. Greviskes a , K. Bertoldi a , S dependence a b s t r a c t The large strain deformation behaviors of an ethylene methacrylic acid (EMAA

486

Acetic Acid Production by Clostridium thermoaceticum in pH-Controlled Batch Fermentations at Acidic pH  

Science Journals Connector (OSTI)

...and the conversion efficiencies to acetic acid and...neutral pH. The highest acetic acid concentrations...acetic acid, and efficiency of converting glucose...the CO2 was of the highest purity attainable...valve completely and venting for 90 s, closing...ii) A glass furnace tube was packed...

Robert D. Schwartz; Frederick A. Keller Jr.

1982-06-01T23:59:59.000Z

487

Phosphatidic acid: an emerging plant lipid second messenger  

Science Journals Connector (OSTI)

Evidence is accumulating that phosphatidic acid is a second messenger. Its level increases within minutes of a wide variety of stress treatments including ethylene, wounding, pathogen elicitors, osmotic and oxidative stress, and abscisic acid. Enhanced signal levels are rapidly attenuated by phosphorylating phosphatidic acid to diacylglycerol pyrophosphate. Phosphatidic acid is the product of two signalling pathways, those of phospholipases C and D, the former in combination with diacylglycerol kinase. Families of these genes are now being cloned from plants. Several downstream targets of phosphatidic acid have been identified, including protein kinases and ion channels.

Teun Munnik

2001-01-01T23:59:59.000Z

488

Continuous-flow free acid monitoring method and system  

DOE Patents (OSTI)

A free acid monitoring method and apparatus is provided for continuously measuring the excess acid present in a process stream. The disclosed monitoring system and method is based on the relationship of the partial pressure ratio of water and acid in equilibrium with an acid solution at constant temperature. A portion of the process stream is pumped into and flows through the monitor under the influence of gravity and back to the process stream. A continuous flowing sample is vaporized at a constant temperature and the vapor is subsequently condensed. Conductivity measurements of the condensate produces a nonlinear response function from which the free acid molarity of the sample process stream is determined.

Strain, J.E.; Ross, H.H.

1980-01-11T23:59:59.000Z

489

Naphthenic acids as antiwear additives for jet fuels  

SciTech Connect

One of the ways in which the antiwear properties of jet fuels can be improved is the use of lubricity agents, otherwise known as antiwear additives. Among the various compounds that have antiwear properties in these fuels, naphthenic, acids merit special attention. These are alicyclic carboxylic acids, in most cases monobasic, with five- and six-membered carbon rings; they have the general formula R(CH{sub 2}){sub n}COOH, where R is a naphthene radical. Natural naphthenic acids consist mainly of acids of the cyclopentane series, beginning with the simplest, in particular cyclopentylacetic acid. The lower naphthenic acids are monocyclic; the higher acids, beginning with C{sub 13}, are bicyclic and polycyclic. Naphthenic acids of the cyclohexane series are encountered less frequently; they may be found, for example, in Baku, California, and Sakhalin crudes. The most widely used method for obtaining naphthenic acids is the treatment of light distillates, lube distillates, and diesel fuels. The standard GOST 13302-77 establishes several grades of naphthenic acids, depending on the raw material and the production technology. This work was aimed at the utilization of wastes containing naphthenic acids, with subsequent use as jet fuel additives.

Deineko, P.S.; Vasil`eva, E.N.; Popova, O.V.; Bashkatova, S.T.

1995-05-01T23:59:59.000Z

490

Interaction of Uranium(VI) with Phthalic Acid  

SciTech Connect

Phthalic acid, a ubiquitous organic compound found in soil, water, and in domestic and nuclear wastes can affect the mobility and bioavailability of metals and radionuclides. We examined the complexation of uranium with phthalic acid by potentiometric titration, electrospray ionization-mass spectroscopy (ESI-MS), and extended X-ray absorption fine structure (EXAFS) analysis. Potentiometric titration of a 1:1 U/phthalic acid indicated uranyl ion bonding with both carboxylate groups of phthalic acid; above pH 5 the uranyl ion underwent hydrolysis with one hydroxyl group coordinated to the inner-sphere of uranium. In the presence of excess phthalic acid, ESI-MS analysis revealed the formation of both 1:1 and 1:2 U/phthalic acid complexes. EXAFS studies confirmed the mononuclear biligand 1:2 U/phthalic acid complex as the predominant form. These results show that phthalates can form soluble stable complexes with uranium and may affect its mobility.

Vazquez, G.; Dodge, C; Francis, A

2008-01-01T23:59:59.000Z

491

Processes to remove acid forming gases from exhaust gases  

DOE Patents (OSTI)

The present invention relates to a process for reducing the concentration of NO in a gas, which process comprises: (A) contacting a gas sample containing NO with a gaseous oxidizing agent to oxidize the NO to NO[sub 2]; (B) contacting the gas sample of step (A) comprising NO[sub 2] with an aqueous reagent of bisulfite/sulfite and a compound selected from urea, sulfamic acid, hydrazinium ion, hydrazoic acid, nitroaniline, sulfanilamide, sulfanilic acid, mercaptopropanoic acid, mercaptosuccinic acid, cysteine or combinations thereof at between about 0 and 100 C at a pH of between about 1 and 7 for between about 0.01 and 60 sec; and (C) optionally contacting the reaction product of step (A) with conventional chemical reagents to reduce the concentrations of the organic products of the reaction in step (B) to environmentally acceptable levels. Urea or sulfamic acid are preferred, especially sulfamic acid, and step (C) is not necessary or performed. 16 figs.

Chang, S.G.

1994-09-20T23:59:59.000Z

492

Effect of Hydrolysis on the Properties of a New Viscoelastic Surfactant-Based Acid  

E-Print Network (OSTI)

Viscoelastic surfactants (VES) have been widely used in acidizing and acid fracturing. They are used as diversion agents during matrix acid treatments and leakoff control agents during acid fracturing. At high temperatures, viscoelastic surfactants...

He, Zhenhua

2013-08-07T23:59:59.000Z

493

E-Print Network 3.0 - acid-base equilibrium Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Principles of Environmental Engineering Date Topic Reading Summary: Acid-Base Chemistry 86-195 28 Acid-Base Chemistry 31 Acid Base Chemistry Sept. 2 Acid-Base Chemistry...

494

Constructing and engineering fatty acid metabolic pathways for the production of fuels and chemicals  

E-Print Network (OSTI)

0 fatty acids in transgenic canola by overexpression of Ch0 fatty acids in transgenic canola by overexpression of Ch

Steen, Eric James

2010-01-01T23:59:59.000Z

495

Investigating fatty acid biosynthesis within the algal chloroplast using Chlamydomonas reinhardtii as a model  

E-Print Network (OSTI)

0 fatty acids in transgenic canola by overexpression of Ch0 fatty acids in transgenic canola by overexpression of Ch

Blatti, Jillian L.

2012-01-01T23:59:59.000Z

496

E-Print Network 3.0 - active lewis acid Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

levulinic acid. Proceeding... chemicals: kinetic study on the decomposition of 5-hydroxymethylfurfural into levulinic acid. ... Source: Groningen, Rijksuniversiteit - Centre for...

497

Phosphoric acid impurities in phosphoric acid fuel cell electrolytes. 2: Effects on the oxygen reduction reaction at platinum electrodes  

SciTech Connect

The effects of phosphorus acid additions on the oxygen reduction reaction at platinum electrodes in concentrated phosphoric acid were studied. The oxygen reduction currents decreased, and the Tafel slopes became more negative upon the addition of small concentrations of phosphorus acid. In addition,the phosphorus acid oxidation current tended to complete with the oxygen reduction current. These effects became more pronounced at higher phosphorus acid concentrations and at higher temperatures. Upon the addition of phosphorus acid the number of electrons involved in the oxygen reduction reaction decreased from a value close to four to a value approaching two, suggesting promotion of a two-electron reduction to peroxide. Therefore, in studies of the electrochemical reduction of oxygen in hot concentrated phosphoric acid or in fuel cell systems using hot concentrated phosphoric acid as electrolyte, it is recommended that precautions be taken against the inadvertent formation of the phosphorus acid. The removal of phosphorus acid from concentrated phosphoric acid by repeated potential cycling at 100 mV/s between + 0.5 and +1.50 V (vs. dynamic hydrogen electrode) was demonstrated.

Sugishima, Noboru; Hinatsu, J.T.; Foulkes, F.R. (Univ. of Toronto, Ontario (Canada). Dept. of Chemical Engineering and Applied Chemistry)

1994-12-01T23:59:59.000Z

498

Nucleic acid amplification using modular branched primers  

DOE Patents (OSTI)

Methods and compositions expand the options for making primers for use in amplifying nucleic acid segments. The invention eliminates the step of custom synthesis of primers for Polymerase Chain Reactions (PCR). Instead of being custom-synthesized, a primer is replaced by a combination of several oligonucleotide modules selected from a pre-synthesized library. A modular combination of just a few oligonucleotides essentially mimics the performance of a conventional, custom-made primer by matching the sequence of the priming site in the template. Each oligonucleotide module has a segment that matches one of the stretches within the priming site.

Ulanovsky, Levy (Westmont, IL)

2001-01-01T23:59:59.000Z

499

Solvent extraction of rare-earth metals by carboxylic acids  

SciTech Connect

The solvent extraction of the trivalent lanthanides and yttrium from nitrate media by solutions of carboxylic acids in xylene has been studied. Commercially available carboxylic acids such as Versatic 10 and naphthenic acids were used, as well as model compounds of known structure, such as 2-ethylhexanoic and 3-cyclohexylpropanoic acids. In a few cases, extraction of the metals from sulphate and chloride solutions was also investigated. The dependence of the extraction properties of the carboxylic acids on the atomic number of the lanthanide shows a definite relationship to the steric bulk of the carboxylic acid molecule quantified by means of the steric parameter, E{sub s}{prime} of the substituent alkyl group. The stoichiometries of the extracted complexes for representative light (La), middle (Gd) and heavy (Lu) rare-earth metals were investigated by the slope-analysis technique for a sterically hindered acid (Versatic 10 acid; -E{prime}{sub s} = 3.83) and an acid with low steric hindrance (3-cyclohexylpropanoic acid; -E{prime}{sub s} = 0.28). 14 refs., 13 figs., 3 tabs.

Preez, A.C. du; Preston, J.S. [Mintek, Randburg (South Africa)

1992-04-01T23:59:59.000Z

500

No evidence for acid-catalyzed secondary organic aerosol formation in power plant plumes over metropolitan Atlanta, Georgia - article no. L06801  

SciTech Connect

Aircraft-based measurements of the water-soluble fraction of fine PM organic carbon (WSOC) and inorganic salt composition in the Atlanta, GA region were conducted in the summer of 2004. Five notable plumes of SO{sub 2}, apparently from coal-fired power plants, were intercepted, and had NH{sub 4}{sup +}/SO4{sup 2-} molar ratios ranging from approximately 0.8 to 1.4 compared to molar ratios near 2 outside of the plumes. Sulfate aerosol concentrations increased from a regional background of 5 - 8 {mu} g m{sup -3} to as high as 19.5 {mu} g m{sup -3} within these plumes. No increase in WSOC concentrations was observed in plumes compared to out-of-plumes within a WSOC measurement uncertainty of 8%. These measurements suggest that secondary organic aerosol formation via heterogeneous acid-catalyzed reactions within power plant plumes are not likely a significant contributor to the ambient aerosol mass loading in Atlanta and the surrounding region. Because this region is rich in both biogenic and anthropogenic volatile organic carbon (VOC), the results may be widely applicable.

Peltier, R.E.; Sullivan, A.P.; Weber, R.J.; Wollny, A.G.; Holloway, J.S.; Brock, C.A.; de Gouw, J.A.; Atlas, E.L. [Georgia Institute for Technology, Atlanta, GA (United States). School for Earth and Atmospheric Science

2007-03-15T23:59:59.000Z