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1

The global nature of solar cycle variations of the solar wind dynamic pressure  

E-Print Network [OSTI]

1 The global nature of solar cycle variations of the solar wind dynamic pressure John Richardson: SOLAR WIND DYNAMIC PRESSURE #12;2 Abstract. The solar wind dynamic pressure measured near the ecliptic varies over the solar cycle. A major unanswered question has been whether this variation is a global

Richardson, John

2

PVT measurements for five natural gas mixtures  

E-Print Network [OSTI]

PVT MEASUREMENTS FOR FIVE NATURAL GAS MIXTURES A Thesis by PHILIP PARAYIL SIMON 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 August 1991..., The Netherlands), Ruhrgas (Germany), National Institute of Standards and Technology (Boulder, Colorado, USA), and Texas A&M University (USA). This work involved the measurement of the compressibility factors of the five natural gas mixtures at temperatures...

Simon, Philip Parayil

2012-06-07T23:59:59.000Z

3

The Non-Homologous Nature of Solar Diameter Variations  

E-Print Network [OSTI]

We show in this paper that the changes of the solar diameter in response to variations of large scale magnetic fields and turbulence are not homologous. For the best current model, the variation at the photospheric level is over 1000 times larger than the variation at a depth of 5 Mm, which is about the level at which f-mode solar oscillations determine diameter variations. This model is supported by observations that indicate larger diameter changes for high degree f-modes than for low degree f-modes, since energy of the former are concentrated at shallower layers than the latter.

Sabatino Sofia; Sarbani Basu; Pierre Demarque; Linghuai Li; Gerard Thuillier

2005-09-27T23:59:59.000Z

4

Towards measuring variations of Casimir energy by a superconducting cavity  

E-Print Network [OSTI]

We consider a Casimir cavity, one plate of which is a thin superconducting film. We show that when the cavity is cooled below the critical temperature for the onset of superconductivity, the sharp variation (in the far infrared) of the reflection coefficient of the film engenders a variation in the value of the Casimir energy. Even though the relative variation in the Casimir energy is very small, its magnitude can be comparable to the condensation energy of the superconducting film, and this gives rise to a number of testable effects, including a significant increase in the value of the critical magnetic field, required to destroy the superconductivity of the film. The theoretical ground is therefore prepared for the first experiment ever aimed at measuring variations of the Casimir energy itself.

Giuseppe Bimonte; Enrico Calloni; Giampiero Esposito; Leopoldo Milano; Luigi Rosa

2005-04-07T23:59:59.000Z

5

INCORPORATING NATURAL VARIATION INTO TIME SERIES-BASED LAND COVER CHANGE IDENTIFICATION  

E-Print Network [OSTI]

INCORPORATING NATURAL VARIATION INTO TIME SERIES-BASED LAND COVER CHANGE IDENTIFICATION VARUN in forests. The bulk of work in identifying land cover changes using remote sensing data involves image

Minnesota, University of

6

Variation of hydraulic conductance of some adult conifers under natural conditions  

E-Print Network [OSTI]

Variation of hydraulic conductance of some adult conifers under natural conditions A. Granier, N; in the liquid phase, the flow depends upon water potential gradients and hydraulic conductance from the soil present here some evaluations of hydraulic conductance of trees growing under natural conditions. Data

Paris-Sud XI, Université de

7

Natural mercury isotope variation in coal deposits and organic soils  

SciTech Connect (OSTI)

There is a need to distinguish among sources of Hg to the atmosphere in order to more fully understand global Hg pollution. In this study we investigate whether coal deposits within the United States, China, and Russia-Kazakhstan, which are three of the five greatest coal-producing regions, have diagnostic Hg isotopic fingerprints that can be used to discriminate among Hg sources. We also investigate the Hg isotopic composition of modern organic soil horizons developed in areas distant from point sources of Hg in North America. Mercury stored in coal deposits displays a wide range of both mass dependent fractionation and mass independent fractionation. {delta}{sup 202}Hg varies in coals by 3{per_thousand} and {Delta}{sup 201}Hg varies by 0.9{per_thousand}. Combining these two Hg isotope signals results in what may be a unique isotopic 'fingerprint' for many coal deposits. Mass independent fractionation of mercury has been demonstrated to occur during photochemical reactions of mercury. This suggests that Hg found in most coal deposits was subjected to photochemical reduction near the Earth's surface prior to deposition. The similarity in MDF and MIF of modern organic soils and coals from North America suggests that Hg deposition from coal may have imprinted an isotopic signature on soils. This research offers a new tool for characterizing mercury inputs from natural and anthropogenic sources to the atmosphere and provides new insights into the geochemistry of mercury in coal and soils. 35 refs., 2 figs., 1 tab.

Abir, Biswas; Joel D. Blum; Bridget A. Bergquist; Gerald J. Keeler; Zhouqing Xie [University of Michigan, Ann Arbor, MI (United States). Department of Geological Sciences

2008-11-15T23:59:59.000Z

8

Measurements of Methane Emissions at Natural Gas Production Sites  

E-Print Network [OSTI]

Measurements of Methane Emissions at Natural Gas Production Sites in the United States #12;Why = 21 #12;Need for Study · Estimates of methane emissions from natural gas production , from academic in assumptions in estimating emissions · Measured data for some sources of methane emissions during natural gas

Lightsey, Glenn

9

Gas exchange measurements in natural systems  

SciTech Connect (OSTI)

Direct knowledge of the rates of gas exchange in lakes and the ocean is based almost entirely on measurements of the isotopes /sup 14/C, /sup 222/Rn and /sup 3/He. The distribution of natural radiocarbon has yielded the average rate of CO/sub 2/ exchange for the ocean and for several closed basin lakes. That of bomb produced radiocarbon has been used in the same systems. The /sup 222/Rn to /sup 226/Ra ratio in open ocean surface water has been used to give local short term gas exchange rates. The radon method generally cannot be used in lakes, rivers, estuaries or shelf areas because of the input of radon from sediments. A few attempts have been made to use the excess /sup 3/He produced by decay of bomb produced tritium in lakes to give gas transfer rates. The uncertainty in the molecular diffusivity of helium and in the diffusivity dependence of the rate of gas transfer holds back the application of this method. A few attempts have been made to enrich the surface waters of small lakes with /sup 226/Ra and /sup 3/H in order to allow the use of the /sup 222/Rn and /sup 3/He methods. While these studies give broadly concordant results, many questions remain unanswered. The wind velocity dependence of gas exchange rate has yet to be established in field studies. The dependence of gas exchange rate on molecular diffusivity also remains in limbo. Finally, the degree of enhancement of CO/sub 2/ exchange through chemical reactions has been only partially explored. 49 references, 2 figures, 2 tables.

Broecker, W.S.; Peng, T.H.

1983-01-01T23:59:59.000Z

10

Variation of dispersion measure: evidence of geodetic precession of binary pulsars  

E-Print Network [OSTI]

Variations of dispersion measure (DM) have been observed in some binary pulsars, which can not be well explained by the propagation effects, such as turbulence of the interstellar media (ISM) between the Earth and the pulsar. This paper provides an alternative interpretation of the phenomena, the geodetic precession of the orbit plane of a binary pulsar system. The dynamic model can naturally avoid the difficulties of propagation explanations. Moreover the additional time delay represented by the DM variation of two binary pulsars can be fitted numerically, through which some interesting parameters of the binary pulsar system, i.e., the moment of inertia of pulsars can be obtained, $I_1=(2.0\\pm0.6)\\times 10^{45}$g cm$^{2}$. The elimination of the additional time delay by the dynamic effect means that ISM between the these pulsars and the Earth might also be stable, like some other binary pulsars.

B. P. Gong

2003-06-04T23:59:59.000Z

11

Natural variation in Brachypodium disctachyon: Deep Sequencing of Highly Diverse Natural Accessions (2013 DOE JGI Genomics of Energy and Environment 8th Annual User Meeting)  

SciTech Connect (OSTI)

Sean Gordon of the USDA on "Natural variation in Brachypodium disctachyon: Deep Sequencing of Highly Diverse Natural Accessions" at the 8th Annual Genomics of Energy & Environment Meeting on March 27, 2013 in Walnut Creek, Calif.

Gordon, Sean [USDA

2013-03-01T23:59:59.000Z

12

Natural convection airflow measurement and theory  

SciTech Connect (OSTI)

Natural convection is a major mechanism for heat distribution in many passive solar buildings, especially those with sunspaces. To better understand this mechanism, observations of air velocities and temperatures have been made in 13 different houses that encompass a wide variety of one- and two-story geometries. This paper extends previous reports. Results from one house are described in detail, and some generalizations are drawn from the large additional mass of data taken. A simple mathematical model is presented that describes the general nature of airflow and energy flow through an aperture.

Balcomb, J.D.; Jones, G.F.; Yamaguchi, Kenjiro

1984-01-01T23:59:59.000Z

13

NIST Measurement Services: Natural Gas Flow Calibration Service (NGFCS)  

E-Print Network [OSTI]

NIST Measurement Services: Natural Gas Flow Calibration Service (NGFCS) NIST Special Publication of Standards and Technology #12;i Table of Contents for the Natural Gas Flowmeter Calibration Service (NGFCS;1 Abstract This document describes NIST's high pressure natural gas flow calibration service (NGFCS). Flow

14

Measure Guideline: High Efficiency Natural Gas Furnaces  

SciTech Connect (OSTI)

This Measure Guideline covers installation of high-efficiency gas furnaces. Topics covered include when to install a high-efficiency gas furnace as a retrofit measure, how to identify and address risks, and the steps to be used in the selection and installation process. The guideline is written for Building America practitioners and HVAC contractors and installers. It includes a compilation of information provided by manufacturers, researchers, and the Department of Energy as well as recent research results from the Partnership for Advanced Residential Retrofit (PARR) Building America team.

Brand, L.; Rose, W.

2012-10-01T23:59:59.000Z

15

Distribution, geographic variation and natural history of Sceloporus parvus Smith (Sauria: Iguanidae)  

E-Print Network [OSTI]

s y1e and content by: Head of Department er Member December l977 442603 ABSTRACT Distribution, Geographic Variation and Natural History of Sceio~orus ~arvus Smith (Sauria: Iguanidae). (December 1977) Frederick Haman Mills, B. S. , Texas A... understood Cenozoic evolu+ion of i. he eastern I'iexican mountains and their associated vegetation types. The evolutionary hlsto y of th bg o p of ~Scelo t hl h S. pa s belong a a relatively primitive member probably begins in mid-Tertiary and as such can...

Wills, Frederick Haman

2012-06-07T23:59:59.000Z

16

Cyclic Combustion Variations in Dual Fuel Partially Premixed Pilot-Ignited Natural Gas Engines  

SciTech Connect (OSTI)

Dual fuel pilot ignited natural gas engines are identified as an efficient and viable alternative to conventional diesel engines. This paper examines cyclic combustion fluctuations in conventional dual fuel and in dual fuel partially premixed low temperature combustion (LTC). Conventional dual fueling with 95% (energy basis) natural gas (NG) substitution reduces NOx emissions by almost 90%t relative to straight diesel operation; however, this is accompanied by 98% increase in HC emissions, 10 percentage points reduction in fuel conversion efficiency (FCE) and 12 percentage points increase in COVimep. Dual fuel LTC is achieved by injection of a small amount of diesel fuel (2-3 percent on an energy basis) to ignite a premixed natural gas�������¢����������������air mixture to attain very low NOx emissions (less than 0.2 g/kWh). Cyclic variations in both combustion modes were analyzed by observing the cyclic fluctuations in start of combustion (SOC), peak cylinder pressures (Pmax), combustion phasing (Ca50), and the separation between the diesel injection event and Ca50 (termed �������¢����������������relative combustion phasing�������¢���������������). For conventional dual fueling, as % NG increases, Pmax decreases, SOC and Ca50 are delayed, and cyclic variations increase. For dual fuel LTC, as diesel injection timing is advanced from 20���������������° to 60���������������°BTDC, the relative combustion phasing is identified as an important combustion parameter along with SoC, Pmax, and CaPmax. For both combustion modes, cyclic variations were characterized by alternating slow and fast burn cycles, especially at high %NG and advanced injection timings. Finally, heat release return maps were analyzed to demonstrate thermal management strategies as an effective tool to mitigate cyclic combustion variations, especially in dual fuel LTC.

Srinivasan, K. K.; Krishnan, S. R.

2012-05-09T23:59:59.000Z

17

Variation of density with composition for natural gas mixtures in the supercritical region  

E-Print Network [OSTI]

Impact = $ 255,150,000 ___________________ This thesis follows the style and format of the AIChE Journal. 2 Table 2 shows the economic impact of using different orifice measurement standards as reported by Baldwin and Starling et al. (1997... parameters. 8 Starling et al. (1991) developed a natural gas equation of state with the accuracy to 0.02% for pure methane in a temperature range from 222 to 355K. For 84 natural gases with a range of compositions, the prediction is within 0...

Widia

2004-11-15T23:59:59.000Z

18

ACCURATE TEMPERATURE MEASUREMENTS IN A NATURALLY-ASPIRATED RADIATION SHIELD  

SciTech Connect (OSTI)

Experiments and calculations were conducted with a 0.13 mm fine wire thermocouple within a naturally-aspirated Gill radiation shield to assess and improve the accuracy of air temperature measurements without the use of mechanical aspiration, wind speed or radiation measurements. It was found that this thermocouple measured the air temperature with root-mean-square errors of 0.35 K within the Gill shield without correction. A linear temperature correction was evaluated based on the difference between the interior plate and thermocouple temperatures. This correction was found to be relatively insensitive to shield design and yielded an error of 0.16 K for combined day and night observations. The correction was reliable in the daytime when the wind speed usually exceeds 1 m s{sup -1} but occasionally performed poorly at night during very light winds. Inspection of the standard deviation in the thermocouple wire temperature identified these periods but did not unambiguously locate the most serious events. However, estimates of sensor accuracy during these periods is complicated by the much larger sampling volume of the mechanically-aspirated sensor compared with the naturally-aspirated sensor and the presence of significant near surface temperature gradients. The root-mean-square errors therefore are upper limits to the aspiration error since they include intrinsic sensor differences and intermittent volume sampling differences.

Kurzeja, R.

2009-09-09T23:59:59.000Z

19

Seasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements  

E-Print Network [OSTI]

of indoor air pollution sources. Concurrently, great efforts are made to make buildings energy efficient 1970s, while less attention has been paid to IAQ. Insufficient venting of indoor air pollutantsSeasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements Marie

Hansen, René Rydhof

20

Natural variations of /sup 13/C abundance in coal and bitumen as a tool to monitor co-processing  

SciTech Connect (OSTI)

The use of coal to facilitate the generation of transportation grade fuel bitumen, heavy oil for petroleum resids is a topic of continuing research. In order to optimize the upgrading process one needs to know in what proportion each feedstock contributes to each product fraction. Conventional analytical methods are neither able to distinguish the contribution from either feedstock in the synthetic products, nor measure the subtle changes in product character in response to differing process conditions. The inherent difference in the /sup 13/C//sup 12/C ratio between most coals and bitumens can be utilized as an isotopic tracer to assess the efficacy of co-processing. For example Vesta coal and Athabasca bitumen have sufficiently distinct /sup 13/C//sup 12/C ratios that the measured /sup 13/C//sup 12/C of any product will accurately reflect the proportion of feed incorporated into the product. From the elemental analysis and the /sup 13/C//sup 12/C ratio of the feedstock and products one can calculate the amount of carbon derived from coal (CDC) in each product fraction. Analogously the amount of bitumen derived carbon (BDC) can also be independently calculated. In this study the natural variation in /sup 13/C concentration was utilized as an isotopic tracer to evaluate co-processing efficiency of a one litre stirred autoclave under differing process conditions. Process variables examined were coal concentration, several iron based catalysts (Fe/sub 2/O/sub 3/; Fe/sub 2/O/sub 3/ impregnated with TiO/sub 2/, SnO/sub 2/, or ZnO and a sludge obtained from a nickel refinery) and temperature.

Muehlenbachs, K.; Steer, J.G. (Dept. of Geology, Univ. of Alberta, Edmonton Alberta, T6G 2E3 (CA)); Hogg, A. (Dept. of Chemistry, Univ. of Alberta, Edmonton Alberta T6G 2E3 (CA)); Ohuchi, T.; Beaulieu, G. (Coal Dept., Alberta Research Council, Devon, Alberta T0C 1E0 (CA))

1988-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Natural variations of sup 13 C abundance in coal and bitumen as a tool to monitor coprocessing  

SciTech Connect (OSTI)

The use of coal to facilitate the generation of transportation grade fuel from bitumen, heavy oil or petroleum resids is a topic of continuing research. In order to optimize the upgrading process one needs to know in what proportion each feedstock contributes to each product fraction. Conventional analytical methods are neither able to distinguish the contribution from either feedstock in the synthetic products, nor measure the subtle changes in product character in response to differing process conditions. The inherent difference in the {sup 13}C/{sup 12}C ratio between most coals and bitumen can be utilized as an isotopic tracer to assess the efficacy of coprocessing. For example Vesta coal and Athabasca bitumen have sufficiently distinct {sup 13}C/{sup 12}C ratios that the measured {sup 13}C/{sup 12}C of any product will accurately reflect the proportion of feed incorporated into the product. From the elemental analysis and the {sup 13}C/{sup 12}C ratio of the feedstock and products one can calculate the amount of carbon derived from coal (CDC) in each product fraction. Analogously the amount of bitumen derived carbon (BDC) can also be independently calculated. In this study the natural variation in {sup 13}C concentration was utilized as an isotopic tracer to evaluate coprocessing efficiency of a one liter stirred autoclave under differing process conditions. Process variables examined were coal concentration, several iron based catalysts (Fe{sub 2}O{sub 3}; Fe{sub 2}O{sub 3} impregnated with TiO{sub 2}, SnO{sub 2}, or ZnO and a sludge obtained from a nickel refinery) and temperature.

Muehlenbachs, K.; Steer, J.G.; Hogg, A.; Ohuchi, T.; Beaulieu, G. (Univ. of Alberta, Edmonton (Canada))

1988-01-01T23:59:59.000Z

22

Evaluation of Ultrasonic Measurement Variation in the Double-Shell Tank Integrity Project  

SciTech Connect (OSTI)

Washington River Protection Solutions (WRPS) under contract from the U.S. Department of Energy (DOE) is responsible for assessing the condition of the double-shell tanks (DST) on the Hanford nuclear site. WRPS has contracted with AREVA Federal Services LLC (AFS) to perform ultrasonic testing (UT) inspections of the 28 DSTs to assess the condition of the tanks, judge the effects of past corrosion control practices, and satisfy a regulatory requirement to periodically assess the integrity of the tanks. Since measurement inception in 1997, nine waste tanks have been examined twice (at the time of this report) providing UT data that can now be compared over specific areas. During initial reviews of these two comparable data sets, average UT wall-thickness measurement reductions were noted in most of the tanks. This variation could be a result of actual wall thinning occurring on the waste-tanks walls, or some other unexplained anomaly resulting from measurement error due to causes such as the then-current measurement procedures, operator setup, or equipment differences. WRPS contracted with the Pacific Northwest National Laboratory (PNNL) to assist in understanding why this variation exists and where it stems from.

Pardini, Allan F.; Weier, Dennis R.; Crawford, Susan L.; Munley, John T.

2010-01-12T23:59:59.000Z

23

Chapter 5. Variation within and between species Chapter 6. Natural selection at the molecular level  

E-Print Network [OSTI]

time ? How can we use this information to infer history and functions of different parts of the genome sequences Every individual has a slightly different genome Genomic variations are due to mutations (rates be made by comparing two or more genomic sequences Because mutation rates are very low, most

Wehenkel, Louis

24

Nature in Play: Measuring the Relationship of Nature and Unstructured Play through Case Studies  

E-Print Network [OSTI]

are given for three play spaces containing little nature, some nature, and complete nature in Bonn, Germany. The city has a rich environment and culture with a historic dedication to caring for the environment that made it ideal for a comparison... for encouraging me to apply to the Undergraduate Research Program and guiding me through the research process. She asked challenging questions that added depth to the project. Many individuals in Germany were helpful to my research. The resourceful Miriam...

McCleary, Lisa Christine

2009-06-09T23:59:59.000Z

25

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS  

E-Print Network [OSTI]

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS DETERMINATION DU and Technology, Norway ABSTRACT Pressure drop experiments on natural gas flow at 80 to 120 bar pressure and high of natural gas at typical operating pressures (100-180 bar). At such Reynolds numbers the classical Colebrook

Gudmundsson, Jon Steinar

26

Measurements of Laminar Flame Velocity for Components of Natural Gas  

E-Print Network [OSTI]

, BP 20451, 1 Rue Grandville, 54001 Nancy, France 2 Division of Combustion Physics, Lund University flame velocity of components of natural gas, methane, ethane, propane, and nbutane as well as of binary performed by the heat flux method using a newly built flat flame adiabatic burner at atmospheric pressure

Paris-Sud XI, Université de

27

A comparison of terrestrial water storage variations from GRACE with in situ measurements from Illinois  

E-Print Network [OSTI]

J. -F. Yeh et al. , Ground- water storage changes inferredstorage variations at these spatial scales, a GRACE ground-

Swenson, Sean; Yeh, Pat J.-F.; Wahr, John; Famiglietti, James

2006-01-01T23:59:59.000Z

28

Natural Nuclear Reactor Oklo and Variation of Fundamental Constants Part 1: Computation of Neutronics of Fresh Core  

E-Print Network [OSTI]

Using modern methods of reactor physics we have performed full-scale calculations of the natural reactor Oklo. For reliability we have used recent version of two Monte Carlo codes: Russian code MCU REA and world wide known code MCNP (USA). Both codes produce similar results. We have constructed a computer model of the reactor Oklo zone RZ2 which takes into account all details of design and composition. The calculations were performed for three fresh cores with different uranium contents. Multiplication factors, reactivities and neutron fluxes were calculated. We have estimated also the temperature and void effects for the fresh core. As would be expected, we have found for the fresh core a significant difference between reactor and Maxwell spectra, which was used before for averaging cross sections in the Oklo reactor. The averaged cross section of Sm-149 and its dependence on the shift of resonance position (due to variation of fundamental constants) are significantly different from previous results. Contrary to results of some previous papers we find no evidence for the change of the fine structure constant in the past and obtain new, most accurate limits on its variation with time: -4 10^{-17}year^{-1} < d alpha/dt/alpha < 3 10^{-17} year^{-1} A further improvement in the accuracy of the limits can be achieved by taking account of the core burnup. These calculations are in progress.

Yu. V. Petrov; A. I. Nazarov; M. S. Onegin; V. Yu. Petrov; E. G. Sakhnovsky

2005-09-15T23:59:59.000Z

29

Measured Natural Cooling Enhancement of a While House Fan  

E-Print Network [OSTI]

and with the fan at the low speed and high speed settings averaged 12.1, 53.8 and 75.0 feet per minute (fpm), respectively. The analogous values for the center of the living room were 6.7, 44.0 and 54.8 fpm. Velocities measured near open windows were more than... twice the above values. Increased air velocities can have a very beneficial effect on comfort at high temperature conditions. Fanger's Predicted Mean Vote (PMV) for comfort shows a very large influence for air velocities between 0 and 100 fpm (12...

Parker, D. S.

1994-01-01T23:59:59.000Z

30

Measuring the effects of online advertising on human behavior using natural and field experiments  

E-Print Network [OSTI]

This thesis investigates the effects of online advertising on human behavior: clicks, new-account sign-ups, and retail sales. Five chapters cover natural and field experiments used to measure these effects for both display ...

Lewis, Randall A. (Randall Aaron)

2010-01-01T23:59:59.000Z

31

Property measurement and correlation for homogeneous and naturally fractured low permeability cores  

E-Print Network [OSTI]

This thesis presents the results of measurements from ten naturally fractured Devonian Shale cores using a new laboratory technique to determine the distinctive properties of the matrix and the fractures. The new technique is based on a pressure...

Fan, Jin

2012-06-07T23:59:59.000Z

32

Final technical report for Phenomic Analysis of Natural and Induced Variation in Brachypodium Distachyon DE-SC0001526  

SciTech Connect (OSTI)

The goal of this project was to apply high-throughput, non-destructive phenotyping (phenomics) to collections of natural variants and induced mutants of the model grass Brachypodium distachyon and characterize a small subset of that material in detail. B. distachyon is well suited to this phenomic approach because its small size and rapid generation time allow researchers to grow many plants under carefully controlled conditions. In addition, the simple diploid genetics, high quality genome sequence and existence of numerous experimental tools available for B. distachyon allow us to rapidly identify genes affecting specific phenotypes. Our phenomic analysis revealed great diversity in biofuel-relevant traits like growth rate, biomass and photosynthetic rate. This clearly demonstrated the feasibility of applying a phenomic approach to the model grass B. distachyon. We also demonstrated the utility of B. distachyon for studying mature root system, something that is virtually impossible to do with biomass crops. We showed tremendous natural variation in root architecture that can potentially be used to design crops with superior nutrient and water harvesting capability. Finally, we demonstrated the speed with which we can link specific genes to specific phenotypes by studying two mutants in detail. Importantly, in both cases, the specific biological lessons learned were grass-specific and could not have been learned from a dicot model system. Furthermore, one of the genes affects cell wall integrity and thus may be a useful target in the context of biomass crop improvement. Ultimately, all this information can be used to accelerate the creation of improved biomass crops.

Vogel, John P.

2014-12-17T23:59:59.000Z

33

Measurement and modeling of uranium and strategic element sorption by amidoxime resins in natural seawater  

E-Print Network [OSTI]

MEASUREMENT AND MODELING OF URANIUM AND STRATEGIC ELEMENT SORPTION BY AMIDOXIME RESINS IN NATURAL SEAMATER A Thesis by JOSE GREGORIO PINA-JORDAN Submitted to the Graduate College oi' Texas A&M University in partial I...'ulfillment of the requirements for the degree of MASTER OP SCIENCE December i985 Major Subject: Nuclear Engineering MEASUREMENT AND MODELING OF URANIUM AND STRATEGIC ELEMENT SORPTION BY AMIDOXIME RESINS IN NATURAL SEANATER A thesis by JOSE GREGORIO PINA...

Pina-Jordan, Jose Gregorio

1985-01-01T23:59:59.000Z

34

The Retrocausal Nature of Quantum Measurement Revealed by Partial and Weak Measurements  

SciTech Connect (OSTI)

Quantum measurement is sometimes more effective when its result is not definite. Partial measurement turns the initial superposition not into a certain state but to a greater probability for it, enabling probing the quantum state in cases where complete measurement makes the noncommuting variables inaccessible. It also enables full quantum erasure that, unlike prevailing method, can be carried out even on recorded results. Aharonov's weak measurement is another method of imprecisely measuring quantum variables, outsmarting the uncertainty principle in even subtler ways. Happily, the two methods complement and corroborate one another in several interesting ways. We gedankenly apply these measurements to the EPR case. A pair of entangled particles undergoes more than one pair of partial and weak measurements, which, unlike complete measurements, leave them partially correlated. Their erasure is then shown to be as nonlocal as measurement itself. Surprisingly, the temporal relations between such measurements in the EPR setting do not follow the temporal sequence perceived by an external observer. For each particle, the measurements performed on the other operate as if they occurred (with signs reversed) in its own past, and in reversed order. This fully accords with Cramer's transactional interpretation and Aharonov's two state-vector formalism.

Elitzur, Avshalom C. [Iyar, Israeli Institute for Advanced Research, Rehovot (Israel); Cohen, Eliahu [School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel)

2011-11-29T23:59:59.000Z

35

Systematic variation in the apparent burning area of thermonuclear bursts and its implication for neutron star radius measurement  

E-Print Network [OSTI]

Precision measurements of neutron star radii can provide a powerful probe of the properties of cold matter beyond nuclear density. Beginning in the late 1970s it was proposed that the radius could be obtained from the apparent or inferred emitting area during the decay portions of thermonuclear (type I) X-ray bursts. However, this apparent area is generally not constant, preventing reliable measurement of the source radius. Here we report for the first time a correlation between the variation of the inferred area and the burst properties, measured in a sample of almost 900 bursts from 43 sources. We found that the rate of change of the inferred area during decay is anticorrelated with the burst decay duration. A Spearman rank correlation test shows that this relation is significant at the <10^{-45} level for our entire sample, and at the 7x10^{-37} level for the 625 bursts without photospheric radius expansion. This anticorrelation is also highly significant for individual sources exhibiting a wide range of burst durations, such as 4U 1636-536 and Aql X-1. We suggest that variations in the colour factor, which relates the colour temperature resulted from the scattering in the neutron star atmosphere to the effective temperature of the burning layer, may explain the correlation. This in turn implies significant variations in the composition of the atmosphere between bursts with long and short durations.

Sudip Bhattacharyya; M. Coleman Miller; Duncan K. Galloway

2009-08-28T23:59:59.000Z

36

Measurement of lithium isotope ratios by quadrupole-ICP-MS: application to seawater and natural carbonates  

E-Print Network [OSTI]

Measurement of lithium isotope ratios by quadrupole-ICP-MS: application to seawater and natural method for lithium isotope ratio (7 Li/6 Li) determinations with low total lithium consumption ( lithium from all matrix elements using small volume resin (2 ml/3.4 meq AG 50W-X8) and low volume elution

Weston, Ken

37

Laboratory measurements of wave height variations and currents along a steep-sided channel  

E-Print Network [OSTI]

towards the channel, when the basin is filling. The channel is evident by the dark rectangle in the middle of the figure. 16 3. 3: Truncated time series of case 1 atx=2. 5m andy=8. 0 m (55&t(70 s). The open circle in figure 3. 1 shows the measurement... position in the basin. . . . . . . . . . . . . . 19 3. 4: The ADV's side-looking 3-D sensor probe 20 3. 5: Plan view of where ADV measurements were taken. The circle indicates a representative location that is referred to in Figure 3. 6...

Way, Francis

2000-01-01T23:59:59.000Z

38

Indirect measurement of diluents in a multi-component natural gas  

DOE Patents [OSTI]

A method of indirectly measuring the diluent (nitrogen and carbon dioxide) concentrations in a natural gas mixture. The molecular weight of the gas is modeled as a function of the speed of sound in the gas, the diluent concentrations in the gas, and constant values, resulting in a model equation. A set of reference gas mixtures with known molecular weights and diluent concentrations is used to calculate the constant values. For the gas in question, if the speed of sound in the gas is measured at three states, the three resulting expressions of molecular weight can be solved for the nitrogen and carbon dioxide concentrations in the gas mixture.

Morrow, Thomas B.; Owen, Thomas E.

2006-03-07T23:59:59.000Z

39

The effect of natural water temperature variation on the monitoring and regulation of thermal discharge impacts : the role of predictive natural temperature models  

E-Print Network [OSTI]

Pollution control policies have been an outgrowth of increased awareness that measures must be taken to handle the increasing amounts of wastes and by-products of human activity. A particular problem in the policies is how ...

Ostrowski, Peter

1981-01-01T23:59:59.000Z

40

Nature of petrographic variation in Taylor-Copland Coal of middle Pennsylvanian Breathitt Formation of eastern Kentucky  

SciTech Connect (OSTI)

The Taylor-Copland Coal is petrographically distinctive in that it has lowest average vitrinite content (63%) and concomitant highest inertinite (25%) and exinite (12%) of all eastern Kentucky coals. Additionally, average total sulfur is 3.4%, or nearly twice the 1.8% figure determined for all eastern Kentucky samples. Deviations from the maceral averages are equally distinctive. Particularly interesting is an areally extensive, though discontinuous, sample sequence showing significantly lower vitrinites (commonly 40%), very high inertinites (40%), and high exinite content (15-20%). The high-inertinite and high total-sulfur trends and variations for each were presumed to be related to proximity to the coal of marine lithologic units of the overlying Magoffin Member. However, it was found that maceral and possible sulfur trends are probably unrelated to roof rock variation, but are related to existence or absence of a thick durain coal lithotype toward the middle of some coal beds. Palynology reveals that spores in the durain-rich samples are poorly preserved (micrinitized), but assemblages and relative percentages of genera forming the assemblages remained unchanged from those found in high-vitrinite (durain-free) samples. Unchanged spore assemblages possibly indicate that unchanging plant communities existed through the durain-forming episode of the Taylor-Copland swamp. Rather, the effect of the durain phase on the Taylor-Copland swamp was to accelerate degradation (oxidation) of peat deposits associated with the surrounding plant community.

Trinkle, E.J.; Hower, J.C.; Tully, D.G.; Helfrich, C.T.

1984-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

TESTING MODELS OF INTRINSIC BRIGHTNESS VARIATIONS IN TYPE Ia SUPERNOVAE AND THEIR IMPACT ON MEASURING COSMOLOGICAL PARAMETERS  

SciTech Connect (OSTI)

For spectroscopically confirmed Type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B - V - c) between the true B - V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the three-season Sloan Digital Sky Survey-II and 191 griz light curves from the Supernova Legacy Survey 3 year data release. We find that the simplest model of a wavelength-independent (coherent) scatter is not adequate, and that to describe the data the intrinsic-scatter model must have wavelength-dependent variations resulting in a {approx}0.02 mag scatter in B - V - c. Relatively weak constraints are obtained on the nature of intrinsic scatter because a variety of different models can reasonably describe this photometric data sample. We use Monte Carlo simulations to examine the standard approach of adding a coherent-scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced {chi}{sup 2} to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the correct wavelength dependence of the scatter, we find that this approach is valid and that the bias on the dark energy equation-of-state parameter w is much smaller ({approx}0.001) than current systematic uncertainties. However, incorrect model uncertainties can lead to a significant bias on the distance moduli, with up to {approx}0.05 mag redshift-dependent variation. This bias is roughly reduced in half after applying a Malmquist bias correction. For the recent SNLS3 cosmology results, we estimate that this effect introduces an additional systematic uncertainty on w of {approx}0.02, well below the total uncertainty. This uncertainty depends on the choice of viable scatter models and the choice of supernova (SN) samples, and thus this small w-uncertainty is not guaranteed in future cosmology results. For example, the w-uncertainty for SDSS+SNLS (dropping the nearby SNe) increases to {approx}0.04.

Kessler, Richard; Frieman, Joshua A. [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)] [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Guy, Julien; Betoule, Marc; El-Hage, Patrick [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France)] [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France); Marriner, John [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)] [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Brinkmann, Jon [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States)] [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States); Cinabro, David [Department of Physics, Wayne State University, Detroit, MI 48202 (United States)] [Department of Physics, Wayne State University, Detroit, MI 48202 (United States); Jha, Saurabh [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States)] [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Mosher, Jennifer [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States)] [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States); Schneider, Donald P., E-mail: kessler@kicp.uchicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

2013-02-10T23:59:59.000Z

42

Compilation of gas intrusion measurements, variations, and consequence modeling for SPR caverns.  

SciTech Connect (OSTI)

The intrusion of gas into oils stored within the SPR has been examined. When oil is stored in domal salts, gases intrude into the stored oil from the surrounding salt. Aspects of the mechanism of gas intrusion have been examined. In all cases, this gas intrusion results in increases in the oil vapor pressure. Data that have been gathered from 1993 to August 2002 are presented to show the resultant increases in bubble-point pressure on a cavern-by-cavern as well as on a stream basis. The measurement techniques are presented with particular emphasis on the TVP 95. Data analysis methods are presented to show the methods required to obtain recombined cavern oil compositions. Gas-oil ratios are also computed from the data and are presented on a cavern-by-cavern and stream basis. The observed increases in bubble-point pressure and gas-oil ratio are further statistically analyzed to allow data interpretation. Emissions plume modeling is used to determine adherence to state air regulations. Gas intrusion is observed to be variable among the sites and within each dome. Gas intrusions at Bryan Mound and Big Hill have resulted in the largest increases in bubble-point pressure for the Strategic Petroleum Reserve (SPR). The streams at Bayou Choctaw and West Hackberry show minimal bubble-point pressure increases. Emissions plume modeling, using the state mandated ISCST code, of oil storage tanks showed that virtually no gas may be released when H2S standards are considered. DOE plans to scavenge H2S to comply with the very tight standards on this gas. With the assumption of scavenging, benzene releases become the next most controlling factor. Model results show that a GOR of 0.6 SCF/BBL may be emissions that are within standards. Employing the benzene gas release standard will significantly improve oil deliverability. New plume modeling using the computational fluid dynamics code, FLUENT, is addressing limitations of the state mandated ISCST model.

Hinkebein, Thomas E.

2003-03-01T23:59:59.000Z

43

Indriect Measurement Of Nitrogen In A Mult-Component Natural Gas By Heating The Gas  

DOE Patents [OSTI]

Methods of indirectly measuring the nitrogen concentration in a natural gas by heating the gas. In two embodiments, the heating energy is correlated to the speed of sound in the gas, the diluent concentrations in the gas, and constant values, resulting in a model equation. Regression analysis is used to calculate the constant values, which can then be substituted into the model equation. If the diluent concentrations other than nitrogen (typically carbon dioxide) are known, the model equation can be solved for the nitrogen concentration.

Morrow, Thomas B. (San Antonio, TX); Behring, II, Kendricks A. (Torrance, CA)

2004-06-22T23:59:59.000Z

44

Measure Guideline: Combustion Safety for Natural Draft Appliances Through Appliance Zone Isolation  

SciTech Connect (OSTI)

This measure guideline covers how to assess and carry out the isolation of natural draft combustion appliances from the conditioned space of low-rise residential buildings. It deals with combustion appliances located either within the living space in enclosed closets or side rooms or outside the living space in an adjacent area like an attic or garage. This subset of houses does not require comprehensive combustion safety tests and simplified prescriptive procedures can be used to address safety concerns. This allows residential energy retrofit contractors inexperienced in advanced combustion safety testing to effectively address combustion safety issues and allow energy retrofits including tightening and changes to distribution and ventilation systems to proceed.

Fitzgerald, J.; Bohac, D.

2014-04-01T23:59:59.000Z

45

Compilation of Gas Intrusion Measurements, Variations, and Consequence Modeling for SPR Caverns  

SciTech Connect (OSTI)

The intrusion of gas into oils stored within the SPR has been examined. When oil is stored in domal salts, gases intrude into the stored oil from the surrounding salt. Aspects of the mechanism of gas intrusion have been examined. In all cases, this gas intrusion results in increases in the oil vapor pressure. Data that have been gathered from 1993 to August 2002 are presented to show the resultant increases in bubble-point pressure on a cavern-by-cavern as well as on a stream basis. The measurement techniques are presented with particular emphasis on the TVP 95. Data analysis methods are presented to show the methods required to obtain recombined cavern oil compositions. Gas-oil ratios are also computed from the data and are presented on a cavern-by-cavern and stream basis. The observed increases in bubble-point pressure and gas-oil ratio are further statistically analyzed to allow data interpretation. Emissions plume modeling is used to determine adherence to state air regulations. Gas intrusion is observed to be variable among the sites and within each dome. Gas intrusions at Bryan Mound and Big Hill have resulted in the largest increases in bubble-point pressure for the Strategic Petroleum Reserve (SPR). The streams at Bayou Choctaw and West Hackberry show minimal bubble-point pressure increases. Emissions plume modeling, using the state mandated ISCST code, of oil storage tanks showed that virtually no gas may be released when H2S standards are considered. DOE plans to scavenge H{sub 2}S to comply with the very tight standards on this gas. With the assumption of scavenging, benzene releases become the next most controlling factor. Model results show that a GOR of 0.6 SCF/BBL may be emissions that are within standards. Employing the benzene gas release standard will significantly improve oil deliverability. New plume modeling using the computational fluid dynamics code, FLUENT, is addressing limitations of the state mandated ISCST model.

HINKEBEIN, THOMAS E.

2003-03-01T23:59:59.000Z

46

Application of a ratiometric laser induced fluorescence (LIF) thermometry for micro-scale temperature measurement for natural convection flows  

E-Print Network [OSTI]

A ratiometric laser induced fluorescence (LIF) thermometry applied to micro-scale temperature measurement for natural convection flows. To eliminate incident light non-uniformity and imperfection of recording device, two fluorescence dyes are used...

Lee, Heon Ju

2004-11-15T23:59:59.000Z

47

Reconstructing the blood pressure waveform using a wearable photoplethysmograph sensor and hydrostatic pressure variations measured by accelerometers  

E-Print Network [OSTI]

An important part of a routine clinical examination is the assessment of the arterial blood pressure waveform. The variations in shape of the waveform indicate the presence of disease. In this work, a method is developed ...

Marinkovi?, Aleksandar, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

48

An initial look at the dynamics of the microscale flow field within a large wind farm in response to variations in the natural inflow  

SciTech Connect (OSTI)

This paper discusses some early results from a study to examine the influence of the natural inflow structure on the internal microscale turbulence environment of a large wind farm. Two fully equipped, high-resolution boundary layer measurement systems were employed to document the alteration of the turbulent structure as the flow entered and left a wind park consisting of 41 rows of turbines. These systems collected data continuously for a period of several weeks during the peak wind season in San Gorgonio Pass. In addition, statistical summaries of the inflow and outflow characteristics from a hub-height elevation were recorded prior to, during and after the detailed measurement period. Results of these hub-height summaries will be discussed and interpreted in this paper. 11 figs.

Kelley, N.D.

1989-10-01T23:59:59.000Z

49

UNDERSTANDING METHANE EMISSIONS SOURCES AND VIABLE MITIGATION MEASURES IN THE NATURAL GAS TRANSMISSION SYSTEMS: RUSSIAN AND U.S. EXPERIENCE  

SciTech Connect (OSTI)

This article will compare the natural gas transmission systems in the U.S. and Russia and review experience with methane mitigation technologies in the two countries. Russia and the United States (U.S.) are the world's largest consumers and producers of natural gas, and consequently, have some of the largest natural gas infrastructure. This paper compares the natural gas transmission systems in Russia and the U.S., their methane emissions and experiences in implementing methane mitigation technologies. Given the scale of the two systems, many international oil and natural gas companies have expressed interest in better understanding the methane emission volumes and trends as well as the methane mitigation options. This paper compares the two transmission systems and documents experiences in Russia and the U.S. in implementing technologies and programs for methane mitigation. The systems are inherently different. For instance, while the U.S. natural gas transmission system is represented by many companies, which operate pipelines with various characteristics, in Russia predominately one company, Gazprom, operates the gas transmission system. However, companies in both countries found that reducing methane emissions can be feasible and profitable. Examples of technologies in use include replacing wet seals with dry seals, implementing Directed Inspection and Maintenance (DI&M) programs, performing pipeline pump-down, applying composite wrap for non-leaking pipeline defects and installing low-bleed pneumatics. The research methodology for this paper involved a review of information on methane emissions trends and mitigation measures, analytical and statistical data collection; accumulation and analysis of operational data on compressor seals and other emission sources; and analysis of technologies used in both countries to mitigate methane emissions in the transmission sector. Operators of natural gas transmission systems have many options to reduce natural gas losses. Depending on the value of gas, simple, low-cost measures, such as adjusting leaking equipment components, or larger-scale measures, such as installing dry seals on compressors, can be applied.

Ishkov, A.; Akopova, Gretta; Evans, Meredydd; Yulkin, Grigory; Roshchanka, Volha; Waltzer, Suzie; Romanov, K.; Picard, David; Stepanenko, O.; Neretin, D.

2011-10-01T23:59:59.000Z

50

Commissioning of a magnetic suspension densitometer for high-accuracy density measurements of natural gas mixtures  

E-Print Network [OSTI]

of developing clean coal technology and its abundant, economical domestic sources made coal the focus of attention once again (Ferguson, 2002). The US DOE in conjunction with the industry initiated a research, development and demonstration (RD&D) program...). Until clean coal technologies mature to compete viably with natural gas, production of natural gas must be maintained or increased to avoid dependence upon imported petroleum oil. Although natural gas and coal may appear to rival each other in the mid...

Patil, Prashant Vithal

2009-05-15T23:59:59.000Z

51

Detecting internal corrosion of natural gas transmission pipelines: field tests of probes and systems for real-time corrosion measurement  

SciTech Connect (OSTI)

A field study was conducted to evaluate the use of automated, multi-technique electrochemical corrosion-rate monitoring devices and probes for detecting corrosion in environments similar to those found in natural gas transmission pipelines. It involved measurement of real-time corrosion signals from operating pipelines. Results and interpretation were reported from four different field test locations. Standard flush-mount and custom flange probes were used in four different environments at a gas-gathering site and one environment but two different probe orientations at a natural gas site. These sites were selected to represent normal and upset conditions common in gas transmission pipelines. The environments consisted of two different levels of humidified natural gas, liquid hydrocarbon, and water from natural gas. Probe locations included the 6 and 12 o?clock positions of a natural gas pipeline carrying 2-phase gas/liquid flow. The probe data was monitored using completely remote solar powered systems that provided real-time data transmission via wireless back to a pipeline control station. Data are also presented comparing the ECR probe data to that for coupons used to determine corrosion rate and to detect the presence of microbiologically influenced corrosion (MIC).

Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, M.; Kane, R.D. (InterCorr International); Meidinger, B. (Rocky Mountain Oilfield Testing Center)

2005-01-01T23:59:59.000Z

52

Seasonal variation of carbon monoxide in northern Japan: Fourier transform IR measurements and source-labeled model calculations  

E-Print Network [OSTI]

doi:10.1029/2002JD003093. Stricker, N. C. M. , A. Hahne, D.satellite measurements [ Stricker et al . , 1995] are shown

2006-01-01T23:59:59.000Z

53

Testing Models of Intrinsic Brightness Variations in Type Ia Supernovae, and their Impact on Measuring Cosmological Parameters  

E-Print Network [OSTI]

For spectroscopically confirmed type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte-Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B-V-c) between the true B-V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the 3-season Sloan Digital Sky Survey-II, and 191 griz light curves from the Supernova Legacy Survey 3-year data release. We find that the simplest model of a wavelength independent (coherent) scatter is not adequate, and that to describe the data the intrinsic scatter model must have wavelength-dependent variations. We use Monte Carlo simulations to examine the standard approach of adding a coherent scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced chi2 to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the c...

Kessler, Richard; Marriner, John; Betoule, Marc; Brinkmann, Jon; Cinabro, David; El-Hage, Patrick; Frieman, Joshua; Jha, Saurabh; Mosher, Jennifer; Schneider, Donald P

2012-01-01T23:59:59.000Z

54

Natural Ventilation in Buildings: Measurement in a Wind Tunnel and Numerical Simulation with Large Eddy Simulation  

E-Print Network [OSTI]

save energy compared to mechanical ventilation systems. In building design the prediction save energy consumed by the heating, ventilating, and air- conditioning systems in a building. In a naturally ventilated building, air is driven in and out due to pressure differences produced by wind

Chen, Qingyan "Yan"

55

High-accuracy P-p-T measurements of pure gas and natural gas like mixtures using a compact magnetic suspension densimeter  

E-Print Network [OSTI]

Control SNG3 Synthetic natural gas mixture SNG5 Synthetic natural gas mixture SSR Solid State Relay T Tee fitting Ta Tantalum Ti Titanium TLP Tension Leg Platform V Valve ZP Zero Point Greek letters ? Temperature...………………………………………………………….98 Figure VI.3. Percentage deviation of measured carbon dioxide densities from NIST -12 measured in 2006…………………………………………………….……99 Figure VI.4. Percentage deviation of measured nitrogen densities from NIST -12 measured in 2006...

Ejaz, Saquib

2007-09-17T23:59:59.000Z

56

Drift time variations in CdZnTe detectors measured with alpha-particles: Their correlation with the detector’s responses  

SciTech Connect (OSTI)

Homogeneity of properties related to material crystallinity is a critical parameter for achieving high-performance CdZnTe (CZT) radiation detectors. Unfortunately, this requirement is not always satisfied in today's commercial CZT material due to high concentrations of extended defects, in particular subgrain boundaries, which are believed to be part of the causes hampering the energy resolution and efficiency of CZT detectors. In the past, the effects of subgrain boundaries have been studied in Si, Ge and other semiconductors. It was demonstrated that subgrain boundaries tend to accumulate secondary phases and impurities causing inhomogeneous distributions of trapping centers. It was also demonstrated that subgrain boundaries result in local perturbations of the electric field, which affect the carrier transport and other properties of semiconductor devices. The subgrain boundaries in CZT material likely behave in a similar way, which makes them responsible for variations in the electron drift time and carrier trapping in CZT detectors. In this work, we employed the transient current technique to measure variations in the electron drift time and related the variations to the device performances and subgrain boundaries, whose presence in the crystals were confirmed with white beam X-ray diffraction topography and infrared transmission microscopy.

Bolotnikov A. E.; Butcher, J.; Hamade, M.; Petryk, M.; Bolotnikov, A.; Camarda, G.; Cui, Y.; Hossain, A.; Kim, K.; Yang, G.; and James, R.

2012-05-14T23:59:59.000Z

57

Laboratory measurements of the temporal and cross-shore variation of the wave-induced bed stress  

E-Print Network [OSTI]

Detailed laboratory measurements of horizontal velocity above a rough, fixed, impermeable slope were made to determine the effect of varying wave conditions on the shear stress in the swash zone. The research involved the design, construction...

Sukumaran, Ashok

2000-01-01T23:59:59.000Z

58

Measurements of Spatially Resolved Velocity Variations in Shock Compressed Heterogeneous Materials Using a Line-Imaging Velocity Interferometer  

SciTech Connect (OSTI)

Relatively straightforward changes in the optical design of a conventional optically recording velocity interferometer system (ORVIS) can be used to produce a line-imaging velocity interferometer wherein both temporal and spatial resolution can be adjusted over a wide range. As a result line-imaging ORVIS can be tailored to a variety of specific applications involving dynamic deformation of heterogeneous materials as required by the characteristic length scale of these materials (ranging from a few {micro}m for ferroelectric ceramics to a few mm for concrete). A line-imaging ORVIS has been successfully interfaced to the target chamber of a compressed gas gun driver and fielded on numerous tests in combination with simultaneous measurements using a dual delay-leg, ''push-pull'' VISAR system. These tests include shock loading of glass-reinforced polyester composites, foam reverberation experiments (measurements at the free surface of a thin aluminum plate impacted by foam), and measurements of dispersive velocity in a shock-loaded explosive simulant (sugar). Comparison of detailed spatially-resolved material response to the spatially averaged VISAR measurements will be discussed.

ASAY,JAMES R.; CHHABILDAS,LALIT C.; KNUDSON,MARCUS D.; TROTT,WAYNE M.

1999-09-01T23:59:59.000Z

59

A system for the real time, direct measurement of natural gas flow  

SciTech Connect (OSTI)

PMI/Badger Meter, Inc. with partial sponsorship from the Gas Research Institute, has designed and developed direct measurement total energy flow metering instrumentation. As industry demands for improved accuracy and speed of measurement have increased so has the complexity of the overall hardware and software systems. Considering traditional system approaches, few companies have the in house capability of maintaining a complete system. This paper addresses efforts to implement a direct, total gas energy flow metering system which is simple to use and cost effective.

Sowell, T. [PMI, Badger Meter, Inc., Tulsa, OK (United States)

1995-12-31T23:59:59.000Z

60

Studying variation of fundamental constants with molecules V. V. Flambaum  

E-Print Network [OSTI]

directly linked to experimentally measured atomic and molecular observables. Below we will show that huge, and Oklo natural nuclear reactor give us the space-time variation of constants on the Universe lifetime scale, i.e. on times from few bil- lion to more than ten billion years. Comparison of the frequencies

Titov, Anatoly

Note: This page contains sample records for the topic "measuring natural variations" 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

Measure Guideline: Combustion Safety for Natural Draft Appliances Using Indoor Air  

SciTech Connect (OSTI)

This measure guideline covers how to assess and carry out the combustion safety procedures for appliances and heating equipment that uses indoor air for combustion in low-rise residential buildings. Only appliances installed in the living space, or in an area freely communicating with the living space, vented alone or in tandem with another appliance are considered here. A separate measure guideline addresses combustion appliances located either within the living space in enclosed closets or side rooms or outside the living space in an adjacent area like an attic or garage that use outdoor air for combustion. This document is for inspectors, auditors, and technicians working in homes where energy upgrades are being conducted whether or not air infiltration control is included in the package of measures being applied. In the indoor combustion air case, guidelines summarized here are based on language provided in several of the codes to establish minimum requirements for the space using simplified prescriptive measures. In addition, building performance testing procedures are provided by testing agencies. The codes in combination with the test procedures offer comprehensive combustion safety coverage to address safety concerns, allowing inexperienced residential energy retrofit inspectors to effectively address combustion safety issues and allow energy retrofits to proceed.

Brand, L.

2014-04-01T23:59:59.000Z

62

U.S. Natural Gas System Methane Emissions: State of Knowledge from LCAs, Inventories, and Atmospheric Measurements (Presentation)  

SciTech Connect (OSTI)

Natural gas (NG) is a potential "bridge fuel" during transition to a decarbonized energy system: It emits less carbon dioxide during combustion than other fossil fuels and can be used in many industries. However, because of the high global warming potential of methane (CH4, the major component of NG), climate benefits from NG use depend on system leakage rates. Some recent estimates of leakage have challenged the benefits of switching from coal to NG, a large near-term greenhouse gas (GHG) reduction opportunity. During this presentation, Garvin will review evidence from multiple perspectives - life cycle assessments (LCAs), inventories and measurements - about NG leakage in the US. Particular attention will be paid to a recent article in Science magazine which reviewed over 20 years of published measurements to better understand what we know about total methane emissions and those from the oil and gas sectors. Scientific and policy implications of the state of knowledge will be discussed.

Heath, G.

2014-04-01T23:59:59.000Z

63

Sensors Synergistic With Nature For In-pile Nuclear Reactor Measurements  

SciTech Connect (OSTI)

To be able to evolve fuel and structural microstructure within a nuclear power reactor in an engineered manner, an effective extreme environment sensor must exist. The development of sensor technology for nondestructive and nonintrusive measurements in harsh environments is a very active field. However most of the effort has been in adapting existing sensing technology to meet the harsh environmental requirements. A different approach is being presented. The fundamental question that we are trying to answer is how do we take advantage of the harsh environment and maintain synergy between the sensor and the environment. This paper will discuss the synergistic senor being developed that takes advantage of the harsh environments.

James A. Smith; Dale K. Kotter; Steven L. Garrett; Randall A. Ali

2012-10-01T23:59:59.000Z

64

A comparison of light and velocity variations in Semiregular variables  

E-Print Network [OSTI]

NIR velocity variations are compared with simultaneous visual light curves for a sample of late-type semiregular variables (SRV). Precise radial velocity measurements are also presented for the SRV V450 Aql. Our aim is to investigate the nature of the irregular light changes found in these variables. Light and velocity variations are correlated in all stars of our sample. Based on these results we discuss several possibilities to explain the observed behavior. We find that pulsation is responsible for large amplitude variations. In a recent paper Lebzelter (1999) invoked large convective cells to understand observed velocity variations. This possibility is discussed with respect to the observed correlation between light and velocity changes. In the light of these results we investigate the origin of the semiregular variations.

T. Lebzelter; L. L. Kiss; K. H. Hinkle

2000-09-21T23:59:59.000Z

65

Harmonic Analysis of Time Variations Observed in the Solar Radio Flux Measured at 810 MHz from 1957 to 2004  

E-Print Network [OSTI]

Long-running measurements of the solar radio flux density at 810 MHz were processed. Based on the least-squares method and using modified periodograms and an iterative technique of fitting and subtracting sinusoids in the time domain, frequency, amplitude, and phase characteristics of any analyzed time series were obtained. Solar cycles 20, 21, and 22 and shorter segments around solar minima and maxima were examined separately. Also, dynamic studies with 405, 810, and 1620 day windows were undertaken. The harmonic representations obtained for all these time series indicate large differences among solar cycles and their segments. We show that the solar radio flux at 810 MHz violates the Gnevyshev-Ohl rule for the pair of cycles 22-23. Analyzing the period 1957-2004, the following spectral periods longer than 1350 days were detected: 10.6, 8.0, 28.0, 5.3, 55.0, 3.9, 6.0, 4.4, and 14.6 yr. For spectral periods between 270 and 1350 days the 11 yr cycle is not recognized. We think that these harmonics form ``impulses of activity'' or a quasi-biennial cycle defined in the Benevolenskaya model of the ``double magnetic cycle.'' The value of about 0.09 is proposed for the interaction parameter (between the low- and high-frequency components) of this model. We confirm the intermittent behavior of the periodicity near 155 days. Correlation coefficients between the radio emission at 810 MHz and sunspot numbers, as well as the radio emission at 2800 MHz calculated for 540 day intervals, depend on the solar cycle phase.

S. Zieba; J. Maslowski; A. Michalec; G. Michalek; A. Kulak

2007-01-15T23:59:59.000Z

66

PROBING THE NATURE OF THE HELIOSHEATH WITH THE NEUTRAL ATOM SPECTRA MEASURED BY IBEX IN THE VOYAGER 1 DIRECTION  

SciTech Connect (OSTI)

We are able to show by comparing modeled energetic neutral atoms (ENAs) spectra to those measured by Interstellar Boundary Explorer (IBEX) that the models along the Voyager 1 (V1) trajectory that best agree with the low energy IBEX data include extra heating due to ram and magnetic energy in the quasi-stagnation region or a kappa ion distribution (with ? = 2.0) in the outer heliosheath. The model explored is the multi-ion, multi-fluid (MI-MF) which treats the pick-up ions and the thermal ion fluids with separate Maxwellian distributions. These effects are included ad hoc in the modeled ENA since they are not present in the model. These results indicate that the low energy spectra of ENAs as measured by IBEX is sensitive to the physical nature of the heliosheath and to effects not traditionally present in current global models. Therefore, by comparing the low energy ENA spectra to models, we can potentially probe the heliosheath in locations beyond those probed by V1 and Voyager 2 (V2)

Opher, M.; Prested, C. [Astronomy Department, Boston University, 725 Commonwealth Avenue, Boston, MA (United States)] [Astronomy Department, Boston University, 725 Commonwealth Avenue, Boston, MA (United States); McComas, D. J. [Southwest Research Institute, San Antonio, TX 78238 (United States)] [Southwest Research Institute, San Antonio, TX 78238 (United States); Schwadron, N. A. [Department of Physics and Space Science Center, University of New Hampshire, Durham, NH 03824 (United States)] [Department of Physics and Space Science Center, University of New Hampshire, Durham, NH 03824 (United States); Drake, J. F., E-mail: mopher@bu.edu [Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742 (United States)

2013-10-20T23:59:59.000Z

67

Variation in hominoid molar enamel thickness Tanya M. Smith a,*, Anthony J. Olejniczak a  

E-Print Network [OSTI]

Variation in hominoid molar enamel thickness Tanya M. Smith a,*, Anthony J. Olejniczak a , Lawrence; fax: C49 341 35 50 399. E-mail addresses: tsmith@eva.mpg.de (T.M. Smith), aolejnic@ic.sunysb.edu (A has been commonly assessed as a linear measurement of enamel visible in worn or naturally fractured

Smith, Tanya M.

68

NATURAL VARIATION IN SPOTTING, HYOID TEETH COUNTS,  

E-Print Network [OSTI]

lands; irrigates reclaimed lands in the West; manages giant hydroelectric power systems; administers

69

Accurate Measurements and Modeling of the PpT Behavior of Pure Substances and Natural Gas-Like Hydrocarbon Mixtures  

E-Print Network [OSTI]

contributions to uapp(?) .................................. 48 3.8 Representative measurement uncertainties ................................................... 50 3.9 Gravimetric masses.../year assuming all other variables are 100 % accurate. Now, considering US measures 20 to 70 trillion cf each year, and assuming an average price of $2/mcf, a reduction of 0.01 % in measurement uncertainty (either density or flow) would save the industry $4...

Mantilla, Ivan

2012-10-19T23:59:59.000Z

70

Physical Consequences of a Momenta-Transfering Particle Theory of Induced Gravity and New Measurements Indicating Variation from Inverse Square Law at Length Scale of .1 mm: Statistical Time Properties of Gravitational Interaction and Analysis Thereof  

E-Print Network [OSTI]

This work presents physical consequences of our theory of induced gravity (Ref.1) regarding: 1) the requirement to consider shape and materials properties when calculating graviton cross section collision area; 2) use of Special Relativity; 3) implications regarding the shape of cosmos; 4) comparison to explanations using General Relativity; 5) properties of black holes; 6) relationship to the strong force and the theorized Higgs boson; 7) the possible origin of magnetic attraction; 8) new measurements showing variation from gravitational inverse square behavior at length scales of 0.1 mm and relationship to the Cosmological constant, and proof of the statistical time properties of the gravitational interaction.

Gary Christopher Vezzoli

2001-04-04T23:59:59.000Z

71

SHORT TIMESCALE VARIATIONS IN THE ATMOSPHERE OF ANTARES A  

SciTech Connect (OSTI)

We analyze three years of high-resolution spectroscopic data and find radial velocity variations with a characteristic timescale of 100 ± 6 days that are nearly sinusoidal. Simultaneous variations in line-depth ratios imply temperature variations of up to 100 K. No photometric variation is seen on a 100 day timescale. The timescale of the variation and its resonant nature suggest solar-like oscillations driven by large-scale convection.

Pugh, T.; Gray, David F., E-mail: tpugh@uwo.ca [Department of Physics and Astronomy, Western University, London, ON (Canada)

2013-11-01T23:59:59.000Z

72

Effects of genome-wide copy number variation on expression in mammalian cells  

E-Print Network [OSTI]

naturally occurring variation (deletions, duplications, triplications, etc) and have been limited to cis effects [27,28]. Radiation

Wang, Richard T; Ahn, Sangtae; Park, Christopher C; Khan, Arshad H; Lange, Kenneth; Smith, Desmond J

2011-01-01T23:59:59.000Z

73

A Generalized Finite Source Calibration Factor: A Natural Improvement to the Finite Source Correction Factor for Uranium Holdup Measurements  

SciTech Connect (OSTI)

This paper proposes refinements to the finite source correction factor used in holdup measurements. Specifically it focuses on a more general method to estimate the average detector response for a finite source. This proposed method for the average detector response is based directly on the Generalized Geometry Holdup (GGH) assay method. First, the finite source correction factor as originally proposed is reviewed in this paper. Following this review the GGH assay method is described. Lastly, a new finite area calibration factor based on GGH is then proposed for finite point and line sources. As an alternative to the direct use of the finite arca calibration factor, finite source correction factors are also derived from this calibration factor. This new correction factor can be used in a manner similar to the finite source correction factor as currently implemented.

Gunn, C.A.; Oberer, R.B.; chiang, L.G.; Ceo, R.N.

2003-01-28T23:59:59.000Z

74

Measurements of Nucleon-Induced Fission Cross-Sections of Separated Tungsten Isotopes and Natural Tungsten in the 50-200 MeV Energy Region  

E-Print Network [OSTI]

Neutron- and proton-induced fission cross-sections of separated isotopes of tungsten (182W, 183W, 184W, and 186W) and natural tungsten relative to 209Bi have been measured in the incident nucleon energy region 50-200 MeV using fission chambers based on thin-film breakdown counters (TFBC) at quasi-monoenergetic neutrons from the 7Li(p,n) reaction and at the proton beams of The Svedberg Laboratory (TSL), Uppsala University (Uppsala, Sweden). The preliminary experimental data are presented in comparison with the recent data for nuclei in the lead-bismuth region, as well as with predictions by the CEM03.01 event generator.

V. P. Eismont; N. P. Filatov; A. N. Smirnov; S. M. Soloviev; J. Blomgren; H. Conde; A. V. Prokofiev; S. G. Mashnik

2005-07-07T23:59:59.000Z

75

Measurements of 222Rn, 220Rn, and CO Emissions in Natural CO2 Fields in Wyoming: MVA Techniques for Determining Gas Transport and Caprock Integrity  

SciTech Connect (OSTI)

An integrated field-laboratory program evaluated the use of radon and CO2 flux measurements to constrain source and timescale of CO2 fluxes in environments proximate to CO2 storage reservoirs. By understanding the type and depth of the gas source, the integrity of a CO2 storage reservoir can be assessed and monitored. The concept is based on correlations of radon and CO2 fluxes observed in volcanic systems. This fundamental research is designed to advance the science of Monitoring, Verification, and Accounting (MVA) and to address the Carbon Storage Program goal of developing and validating technologies to ensure 99 percent storage performance. Graduate and undergraduate students conducted the research under the guidance of the Principal Investigators; in doing so they were provided with training opportunities in skills required for implementing and deploying CCS technologies. Although a final method or “tool” was not developed, significant progress was made. The field program identified issues with measuring radon in environments rich in CO2. Laboratory experiments determined a correction factor to apply to radon measurements made in CO2-bearing environments. The field program also identified issues with radon and CO2-flux measurements in soil gases at a natural CO2 analog. A systematic survey of radon and CO2 flux in soil gases at the LaBarge CO2 Field in Southwest Wyoming indicates that measurements of 222Rn (radon), 220Rn (thoron), and CO2 flux may not be a robust method for monitoring the integrity of a CO2 storage reservoir. The field program was also not able to correlate radon and CO2 flux in the CO2-charged springs of the Thermopolis hydrothermal system. However, this part of the program helped to motivate the aforementioned laboratory experiments that determined correction factors for measuring radon in CO2-rich environments. A graduate student earned a Master of Science degree for this part of the field program; she is currently employed with a geologic consulting company. Measurement of radon in springs has improved significantly since the field program first began; however, in situ measurement of 222Rn and particularly 220Rn in springs is problematic. Future refinements include simultaneous salinity measurements and systematic corrections, or adjustments to the partition coefficient as needed for more accurate radon concentration determination. A graduate student earned a Master of Science degree for this part of the field program; he is currently employed with a geologic consulting company. Both graduate students are poised to begin work in a CCS technology area. Laboratory experiments evaluated important process-level fundamentals that effect measurements of radon and CO2. Laboratory tests established that fine-grained source minerals yield higher radon emissivity compared to coarser-sized source minerals; subtleties in the dataset suggest that grain size alone is not fully representative of all the processes controlling the ability of radon to escape its mineral host. Emissivity for both 222Rn and 220Rn increases linearly with temperature due to reaction of rocks with water, consistent with faster diffusion and enhanced mineral dissolution at higher temperatures. The presence of CO2 changes the relative importance of the factors that control release of radon. Emissivity for both 222Rn and 220Rn in CO2-bearing experiments is greater at all temperatures compared to the experiments without CO2, but emissivity does not increase as a simple function of temperature. Governing processes may include a balance between enhanced dissolution versus carbonate mineral formation in CO2-rich waters.

Kaszuba, John; Sims, Kenneth

2014-09-30T23:59:59.000Z

76

Comparing SAR measurments of natural oil seeps in the Gulf of Mexico with mineral and biological slicks in the North Sea .  

E-Print Network [OSTI]

??In this thesis, natural oil seeps in Synthetic Aperture Radar (SAR) images are studied. The intension is to compare seeps to known oil slicks as… (more)

Hanssen, Claes Anders Storm

2013-01-01T23:59:59.000Z

77

authority compressed natural: Topics by E-print Network  

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

Plantago: Variation among Cohorts in a Natural Plant Population Author(s): Deborah A. Roach Biology and Medicine Websites Summary: classes can reduce the pre- cision of mortality...

78

Calculus of Variations  

E-Print Network [OSTI]

Calc. Var. 15, 451–491 (2002). Calculus of Variations. Donatella Danielli ..... u ? W1,p loc (Rn) such that for every ? ? W1,p o. (Rn) with compact support. (2.14).

Katharina Steingraeber Heidelberg 1107 1997 Oct 17 14:59:21

2002-11-18T23:59:59.000Z

79

Excitation functions of proton-induced reactions on natural Nd and production of radionuclides relevant for double beta decay: Completing measurement in 5-35 MeV energy range  

E-Print Network [OSTI]

Cross-sections for the proton-induced reactions on natural neodymium in energy regions 5-10 MeV and 30-35 MeV were measured using the cyclotron U-120M at the Nuclear Physics Institute at Rez near Prague. This measurement completes the investigation previously done in the 10-30 MeV energy range. Results revealed practical production thresholds and secondary maxima and minima in the excitation functions. It allowed for more appropriate calculation of thick target yields and production rates of many longer-lived radionuclides potentially disturbing the search for neutrinoless double beta decay. Measured cross-sections are consistent with our previously published data.

O. Lebeda; V. Lozza; J. Petzoldt; J. Stursa; V. Zdychova; K. Zuber

2015-04-16T23:59:59.000Z

80

Variational transition state theory  

SciTech Connect (OSTI)

This research program involves the development of variational transition state theory (VTST) and semiclassical tunneling methods for the calculation of gas-phase reaction rates and selected applications. The applications are selected for their fundamental interest and/or their relevance to combustion.

Truhlar, D.G. [Univ. of Minnesota, Minneapolis (United States)

1993-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Mean carrier transport properties and charge collection dynamics of single-crystal, natural type IIa diamonds from ion-induced conductivity measurements  

SciTech Connect (OSTI)

Ion-induced conductivity has been used to investigate the detector characteristics of diamond detectors. Both integrated-charge, and time-resolved current measurements were performed to examine the mean carrier transport properties of diamond and the dynamics of charge collection under highly-localized and high-density excitation conditions. The integrated-charge measurements were conducted with a standard pulse-counting system with {sup 241}Am radioactivity as the excitation source for the detectors. The time-resolved current measurements were performed using a 70 GHz random sampling oscilloscope with the detectors incorporated into high-speed microstrip transmission lines and the excitation source for these measurements was an ion beam of either 5-MeV He{sup +} or 10-MeV Si{sup 3+}. The detectors used in both experiments can be described as metal-semiconductor-metal (MSM) devices where a volume of the detector material is sandwiched between two metal plates. A charge collection model was developed to interpret the integrated-charge measurements which enabled estimation of the energy required to produce an electron-hole pair ({epsilon}{sub di}) and the mean carrier transport properties in diamond, such as carrier mobility and lifetime, and the behavior of the electrical contacts to diamond.

Han, S.S.

1993-09-01T23:59:59.000Z

82

A Variational Approach to MR Bias Correction  

E-Print Network [OSTI]

sequences, the MR signal is given by: We can target , T1, and T2 measurements through appropriate selectionA Variational Approach to MR Bias Correction Ayres Fan Stochastic Systems Group Research Qualifying Exam June 10, 2003 #12;Outline 1. Introduction to bias correction 2. Magnetic resonance imaging 3

Willsky, Alan S.

83

ORIGINAL PAPER Genetic variation of natural durability traits in Eucalyptus  

E-Print Network [OSTI]

-treated wood in some of the world's main wine-producing countries. · Methods Stem diameter at breast height over- and under- bark, heartwood proportion, wood density, methanol extrac- tives and fungal decay were. · Discussion NIR was an effective predictor of methanol extractives, moderately effective for basic density

Paris-Sud XI, Université de

84

Assessor Training Measurement Uncertainty  

E-Print Network [OSTI]

NVLAP Assessor Training Measurement Uncertainty #12;Assessor Training 2009: Measurement Uncertainty Training 2009: Measurement Uncertainty 3 Measurement Uncertainty ·Calibration and testing labs performing Training 2009: Measurement Uncertainty 4 Measurement Uncertainty ·When the nature of the test precludes

85

A variational principle in optics Jacob Rubinstein and Gershon Wolansky  

E-Print Network [OSTI]

A variational principle in optics Jacob Rubinstein and Gershon Wolansky Department of Mathematics a new variational principle in optics. We first formulate the principle for paraxial waves principle to the problem of phase reconstruction from intensity measurements. © 2004 Optical Society

Wolansky, Gershon

86

Lake level variations from satellite radar altimetry with  

E-Print Network [OSTI]

Lake level variations from satellite radar altimetry with retracking of multi-leading edge Shirzad level measurements Increase the number of reliable observations particularly in the shoreline cm Descending tracks Time [year] Waterlevel[m]Lake level variations from satellite radar altimetry

Stuttgart, Universität

87

Stochastic variation in reproductive success of a rare frog, Rana sevosa: implications for conservation and for monitoring amphibian  

E-Print Network [OSTI]

Stochastic variation in reproductive success of a rare frog, Rana sevosa: implications and Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, 2401 Chautauqua, Norman, OK

Richter, Stephen C.

88

First Direct Double-Beta Decay Q-value Measurement of 82Se in Support of Understanding the Nature of the Neutrino  

E-Print Network [OSTI]

In anticipation of results from current and future double-beta decay studies, we report a measurement resulting in a 82Se double-beta decay Q-value of 2997.9(3) keV, an order of magnitude more precise than the currently accepted value. We also present preliminary results of a calculation of the 82Se neutrinoless double-beta decay nuclear matrix element that corrects in part for the small size of the shell model single-particle space. The results of this work are important for designing next generation double-beta decay experiments and for the theoretical interpretations of their observations.

David L. Lincoln; Jason D. Holt; Georg Bollen; Maxime Brodeur; Scott Bustabad; Jonathan Engel; Samuel J. Novario; Matthew Redshaw; Ryan Ringle; Stefan Schwarz

2012-11-24T23:59:59.000Z

89

First Direct Double- Decay Q-Value Measurement of 82Se in Support of Understanding the Nature of the Neutrino  

SciTech Connect (OSTI)

In anticipation of results from current and future double- decay studies, we report a measurement resulting in a 82Se double- decay Q value of 2997.9(3) keV, an order of magnitude more precise than the currently accepted value. We also present preliminary results of a calculation of the 82Se neutrinoless double- decay nuclear matrix element that corrects in part for the small size of the shell model single-particle space. The results of this work are important for designing next generation double- decay experiments and for the theoretical interpretations of their observations.

Lincoln, David L. [NSCL, Michigan State University, East Lansing; Holt, Jason D. [Technische Univ. Darmstadt/GSI/UTK/ORNL; Bollen, Georg [NSCL, Michigan State University, East Lansing; Brodeur, Maxime [NSCL, Michigan State University, East Lansing; Bustabad, Scott [NSCL, Michigan State University, East Lansing; Engel, Jonathan [University of North Carolina, Chapel Hill; Novario, Samuel J. [NSCL, Michigan State University, East Lansing; Redshaw, Matthew [NSCL, Michigan State Univ.,/Central Michigan Univ.-Mt. Pleasant; Ringle, Ryan [NSCL, Michigan State University, East Lansing; Schwarz, Stefan [NSCL, Michigan State University, East Lansing

2013-01-01T23:59:59.000Z

90

Direct Test of the Time-Independence of Fundamental Nuclear Constants Using the Oklo Natural Reactor  

E-Print Network [OSTI]

[NOTE: This 1983 preprint is being uploaded to arXiv.org after the death of its author, who supported online distribution of his work. Contact info of the submitter is at http://ilya.cc .] The positions of neutron resonances have been shown to be highly sensitive to the variation of fundamental nuclear constants. The analysis of the measured isotopic shifts in the natural fossil reactor at Oklo gives the following restrictions on the possible rates of the interaction constants variation: strong ~2x10^-19 yr^-1, electromagnetic ~5x10^-18 yr^-1, weak ~10^-12 yr^-1. These limits permit to exclude all the versions of nuclear constants contemporary variation discussed in the literature. URL: http://alexonline.info >. For more recent analyses see hep-ph/9606486, hep-ph/0205206 and astro-ph/0204069 .

Alexander I. Shlyakhter

2003-07-03T23:59:59.000Z

91

Diurnal variations in methane emission from rice plants  

E-Print Network [OSTI]

A greenhouse study was conducted to investigate the mechanisms causing diurnal variations in methane emission from rice plants (Oryza sativa L.). Methane emission was measured using a closed chamber system on individual rice plants at five stages...

Laskowski, Nicholas Aaron

2004-11-15T23:59:59.000Z

92

Dimensional variation and roughness of LIGA fabricated microstructures  

SciTech Connect (OSTI)

We have measured the dimensional variation and sidewall roughness of features on PMMA micro- components fabricated by deep x-ray lithography in order to assess the effect of dimensional variation on subsequent assembly operations. Dimensional measurements were made using a stylus profilometer with a repeatability in step height of better than 0.01 {mu}m. Roughness measurements were made with the same profilometer scanning in a direction perpendicular to the length of the parts. 22 {mu}m and 54 {mu}m features exhibited dimensional variations described by a Gaussian distribution with standard deviations of 0.202 {mu}m and 0.381 {mu}m, respectively. This corresponds to a maximum relative variation of between 0.6% and 0.9%. Sidewall roughnesses were found to be in the range of 0.02 {mu}m to 0. 03 {mu}m, an insignificant contribution to the total variation when compared to overall dimensional variation. Several potential sources of this variation are discussed, but no single cause was identified as the source of the significant dimensional variation observed here.

Egert, C.M. [Oak Ridge National Lab., TN (United States); Wood, R. [Microelectronics Center of North Carolina, Research Triangle Park, NC (United States); Malek, C.K. [Louisiana State Univ., Baton Rouge, LA (United States)

1996-10-01T23:59:59.000Z

93

Measurement of the cross sections for the production of the isotopes {sup 74}As, {sup 68}Ge, {sup 65}Zn, and {sup 60}Co from natural and enriched germanium irradiated with 100-MeV protons  

SciTech Connect (OSTI)

The cross sections for the production of the radioactive isotopes {sup 74}As, {sup 68}Ge, {sup 65}Zn, and {sup 60}Co in metallic germanium irradiated with 100-MeV protons were measured, the experiments being performed both with germanium of natural isotopic composition and germanium enriched in the isotope {sup 76}Ge. The targets were irradiated with a proton beam at the facility for the production of radionuclides at the accelerator of the Institute for Nuclear Research (INR, Moscow). The data obtained will further be used to calculate the background of radioactive isotopes formed by nuclear cascades of cosmic-ray muons in new-generation experiments devoted to searches for the neutrinoless double-beta decay of {sup 76}Ge at underground laboratories.

Barabanov, I. R.; Bezrukov, L. B.; Gurentsov, V. I.; Zhuykov, B. L.; Kianovsky, S. V.; Kornoukhov, V. N.; Kohanuk, V. M.; Yanovich, E. A. [Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

2010-07-15T23:59:59.000Z

94

Effects of Spatial Variations in Packing Fraction on Reactor Physics Parameters in Pebble-Bed Reactors  

SciTech Connect (OSTI)

The well-known spatial variation of packing fraction near the outer boundary of a pebble-bed reactor core is cited. The ramifications of this variation are explored with the MCNP computer code. It is found that the variation has negligible effects on the global reactor physics parameters extracted from the MCNP calculations for use in analysis by diffusion-theory codes, but for local reaction rates the effects of the variation are naturally important. Included is some preliminary work in using first-order perturbation theory for estimating the effect of the spatial variation of packing fraction on the core eigenvalue and the fision density distribution.

William K. Terry; A. M. Ougouag; Farzad Rahnema; Michael Scott McKinley

2003-04-01T23:59:59.000Z

95

Measuring depth profiles of residual stress with Raman spectroscopy  

SciTech Connect (OSTI)

Knowledge of the variation of residual stress is a very important factor in understanding the properties of machined surfaces. The nature of the residual stress can determine a part`s susceptibility to wear deformation, and cracking. Raman spectroscopy is known to be a very useful technique for measuring residual stress in many materials. These measurements are routinely made with a lateral resolution of 1{mu}m and an accuracy of 0.1 kbar. The variation of stress with depth; however, has not received much attention in the past. A novel technique has been developed that allows quantitative measurement of the variation of the residual stress with depth with an accuracy of 10nm in the z direction. Qualitative techniques for determining whether the stress is varying with depth are presented. It is also demonstrated that when the stress is changing over the volume sampled, errors can be introduced if the variation of the stress with depth is ignored. Computer aided data analysis is used to determine the depth dependence of the residual stress.

Enloe, W.S.; Sparks, R.G.; Paesler, M.A.

1988-12-01T23:59:59.000Z

96

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous...

97

Primary Cosmic Ray Proton Flux Measured by AMS-02  

E-Print Network [OSTI]

The Alpha Magnetic Spectrometer (AMS-02) is a high energy particle detector designed to study origin and nature of cosmic rays up to a few TV from space. It was installed on the International Space Station (ISS) on May 19, 2011. During the first two years of operation AMS-02 performed precise measurements of the proton flux. In the low rigidity range, from 1 GV to 20 GV, the proton flux was daily measured with a statistical error less than 1%. In the same rigidity range a gradual decrease due to Solar modulation effect and transit variations due to Solar Flares and Coronal Mass Ejection were also observed. In the rigidity range from 20 GV up to 100 GV instead, AMS-02 data show no drastic variation and the results are consistent with other experiments. Above 100 GV, AMS-02 proton flux exhibits a single power low behavior with no fine structures nor brakes.

C. Consolandi; on Behalf of the AMS-02 Collaboration

2014-02-06T23:59:59.000Z

98

Influence of Multiplicative Stochastic Variation on Translational Elongation Rates  

E-Print Network [OSTI]

Recent experiments have shown that stochastic effects exerted at the level of translation contribute a substantial portion of the variation in abundance of proteins expressed at moderate to high levels. This study analyzes translational noise arising from fluctuations in residue-specific elongation rates. The resulting variation has multiplicative components that lead individual protein abundances in a population to exhibit approximately log-normal behavior. The high variability inherent in the process leads to parameter variation that has the features of a type of noise in biological systems that has been characterized as extrinsic. Elongation rate variation offers an accounting for a major component of extrinsic noise, and the analysis provided here highlights a probability distribution that is a natural extension of the Poisson and has broad applicability to many types of multiplicative noise processes.

Sandip Datta; Brian Seed

2014-09-15T23:59:59.000Z

99

Wavefunction Collapse via a Nonlocal Relativistic Variational Principle  

SciTech Connect (OSTI)

Since the origin of quantum theory in the 1920's, some of its practitioners (and founders) have been troubled by some of its features, including indeterminacy, nonlocality and entanglement. The 'collapse' process described in the Copenhagen Interpretation is suspect for several reasons, and the act of 'measurement,' which is supposed to delimit its regime of validity, has never been unambiguously defined. In recent decades, nonlocality and entanglement have been studied energetically, both theoretically and experimentally, and the theory has been reinterpreted in imaginative ways, but many mysteries remain. We propose that it is necessary to replace the theory by one that is explicitly nonlinear and nonlocal, and does not distinguish between measurement and non-measurement regimes. We have constructed such a theory, for which the phase of the wavefunction plays the role of a hidden variable via the process of zitterbewegung. To capture this effect, the theory must be relativistic, even when describing nonrelativistic phenomena. It is formulated as a variational principle, in which Nature attempts to minimize the sum of two spacetime integrals. The first integral tends to drive the solution toward a solution of the standard quantum mechanical wave equation, and also enforces the Born rule of outcome probabilities. The second integral drives the collapse process. We demonstrate that the new theory correctly predicts the possible outcomes of the electron two-slit experiment, including the infamous 'delayed-choice' variant. We observe that it appears to resolve some long-standing mysteries, but introduces new ones, including possible retrocausality (a cause later than its effect). It is not clear whether the new theory is deterministic.

Harrison, Alan K. [Los Alamos National Laboratory

2012-06-18T23:59:59.000Z

100

On seismic signatures of rapid variation  

E-Print Network [OSTI]

We present an improved model for an asteroseismic diagnostic contained in the frequency spacing of low-degree acoustic modes. By modelling in a realistic manner regions of rapid variation of dynamically relevant quantities, which we call acoustic glitches, we can derive signatures of the gross properties of those glitches. In particular, we are interested in measuring properties that are related to the helium ionization zones and to the rapid variation in the background state associated with the lower boundary of the convective envelope. The formula for the seismic diagnostic is tested against a sequence of theoretical models of the Sun, and is compared with seismic diagnostics published previously by Monteiro & Thompson (1998, 2005) and by Basu et al. (2004).

G. Houdek; D. O. Gough

2006-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Monthly and seasonal variation of mohair growth and quality traits  

E-Print Network [OSTI]

MONTHLY AND SEASONAL VARIATION OF MOHAIR GR(%TH AND QUALITY TRAITS A Thesis by Enrique Portal Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1972... and Quality Traits. (May 1972) Enrique Portal, Agriculture Engineer, Universidad Central de Venezuela Directed by Dr. James W. Bassett Eleven Angora does were used to measure variation in mohair fleeces traits from five body areas at two consecutive...

Portal, Enrique

1972-01-01T23:59:59.000Z

102

NATURAL GAS MARKET ASSESSMENT  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION NATURAL GAS MARKET ASSESSMENT PRELIMINARY RESULTS In Support.................................................................................... 6 Chapter 2: Natural Gas Demand.................................................................................................. 10 Chapter 3: Natural Gas Supply

103

acid natural products: Topics by E-print Network  

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

Escherichia coli with Amplified 23 Measurements of Methane Emissions at Natural Gas Production Sites Engineering Websites Summary: Measurements of Methane Emissions at...

104

High accuracy p-rho-t measurements up to 200 MPa between 200 K and 500 K using a compact single sinker magnetic suspension densimeter for pure and natural gas like mixtures  

E-Print Network [OSTI]

-74]. ............................................................. 90 FIGURE 54. Literature carbon dioxide deviations from NIST-12 database for temperatures between 240 K and 313 K [76]. ............................................ 91 FIGURE 55. Literature carbon dioxide deviations from NIST-12 database... based fuels such as coal, oil and natural gas. Among these, natural gas is the cleanest, safest, and most useful. Natural gas is a mixture of predominantly methane and other paraffinic hydrocarbons such as ethane, propane, butane, pentane etc...

Atilhan, Mert

2009-06-02T23:59:59.000Z

105

Comparative Analysis of Proteome and Transcriptome Variation...  

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

Comparative Analysis of Proteome and Transcriptome Variation in Mouse. Comparative Analysis of Proteome and Transcriptome Variation in Mouse. Abstract: The relationships between...

106

Variational Principle of Hydrodynamics and Quantization by Stochastic Process  

E-Print Network [OSTI]

The well-known hydrodynamical representation of the Schr\\"{o}dinger equation is reformulated by extending the idea of Nelson-Yasue's stochastic variational method. The fluid flow is composed by the two stochastic processes from the past and the future, which are unified naturally by the principle of maximum entropy. We show that this formulation is easily applicable to the quantization of scalar fields.

T. Kodama; T. Koide

2015-01-05T23:59:59.000Z

107

Nature of eclipsing pulsars  

E-Print Network [OSTI]

We present a model for pulsar radio eclipses in some binary systems, and test this model for PSRs B1957+20 and J2051-0827. We suggest that in these binaries the companion stars are degenerate dwarfs with strong surface magnetic fields. The magnetospheres of these stars are permanently infused by the relativistic particles of the pulsar wind. We argue that the radio waves emitted by the pulsar split into the eigenmodes of the electron-positron plasma as they enter the companion's magnetosphere and are then strongly damped due to cyclotron resonance with the ambient plasma particles. Our model explains in a natural way the anomalous duration and behavior of radio eclipses observed in such systems. In particular, it provides stable, continuous, and frequency-dependent eclipses, in agreement with the observations. We predict a significant variation of linear polarization both at eclipse ingress and egress. In this paper we also suggest several possible mechanisms of generation of the optical and $X$-ray emission ...

Khechinashvili, D; Gil, J; Khechinashvili, David; Melikidze, George; Gil, Janusz

2000-01-01T23:59:59.000Z

108

Nature of eclipsing pulsars  

E-Print Network [OSTI]

We present a model for pulsar radio eclipses in some binary systems, and test this model for PSRs B1957+20 and J2051-0827. We suggest that in these binaries the companion stars are degenerate dwarfs with strong surface magnetic fields. The magnetospheres of these stars are permanently infused by the relativistic particles of the pulsar wind. We argue that the radio waves emitted by the pulsar split into the eigenmodes of the electron-positron plasma as they enter the companion's magnetosphere and are then strongly damped due to cyclotron resonance with the ambient plasma particles. Our model explains in a natural way the anomalous duration and behavior of radio eclipses observed in such systems. In particular, it provides stable, continuous, and frequency-dependent eclipses, in agreement with the observations. We predict a significant variation of linear polarization both at eclipse ingress and egress. In this paper we also suggest several possible mechanisms of generation of the optical and $X$-ray emission observed from these binary systems.

David Khechinashvili; George Melikidze; Janusz Gil

2000-01-08T23:59:59.000Z

109

On the nature of cylic dispersion in spark assisted HCCI combustion  

SciTech Connect (OSTI)

We report experimental observations of cyclic combus-tion variability during the transition between propagating flame combustion and homogeneous charge compres-sion ignition (HCCI) in a single-cylinder, stoichiometri-cally fueled, spark-assisted gasoline engine. The level of internal EGR was controlled with variable valve actua-tion (VVA), and HCCI combustion was achieved at high levels of internal EGR using the VVA system. Spark-ignition was used for conventional combustion and was optionally available during HCCI. The transition region between purely propagating combustion and HCCI was mapped at multiple engine speeds and loads by incre-mentally adjusting the internal EGR level and capturing data for 2800 sequential cycles. These measurements revealed a complex sequence of high COV, cyclic com-bustion variations when operating between the propagat-ing flame and HCCI limits. We were able to experimen-tally demonstrate an increase in the zone of acceptable HCCI-like combustion by using the spark assist. A de-tailed analysis of the cyclic variations in the intermediate zone indicates that they are dominated by nonlinear, nonrandom processes. Comparisons with previous studies of lean-limit cyclic variations suggest that nonlin-ear EGR feedback is probably the major source of the observed variations for this engine. The predictable na-ture of this feedback suggests the possibility of develop-ing on-line diagnostics and proactive control algorithms for expanding stable HCCI operation and improving transitions between conventional and HCCI modes.

Wagner, Robert M [ORNL; Edwards, Kevin Dean [ORNL; Daw, C Stuart [ORNL; Green Jr, Johney Boyd [ORNL; Bunting, Bruce G [ORNL

2006-01-01T23:59:59.000Z

110

Regularization of Nonmonotone Variational Inequalities  

SciTech Connect (OSTI)

In this paper we extend the Tikhonov-Browder regularization scheme from monotone to rather a general class of nonmonotone multivalued variational inequalities. We show that their convergence conditions hold for some classes of perfectly and nonperfectly competitive economic equilibrium problems.

Konnov, Igor V. [Department of Applied Mathematics, Kazan University, ul. Kremlevskaya 18, Kazan 420008 (Russian Federation)], E-mail: Igor.Konnov@ksu.ru; Ali, M.S.S. [Department of Mathematics, Faculty of Education, Ain Shams University, Cairo (Egypt); Mazurkevich, E.O. [Informatics Problems Institute of AS RT, Kazan 420012 (Russian Federation)

2006-05-15T23:59:59.000Z

111

Azimuth Variation in Microwave Backscatter over the Greenland Ice Sheet  

E-Print Network [OSTI]

Azimuth Variation in Microwave Backscatter over the Greenland Ice Sheet Ivan S. Ashcraft and David backscatter measurements are becoming an important tool for monitoring the dynamic behavior of the Greenland ice sheet. However, most Greenland studies assume constant backscatter for varying azimuth angles

Long, David G.

112

Regulation of natural monopolies  

E-Print Network [OSTI]

This chapter provides a comprehensive overview of the theoretical and empirical literature on the regulation of natural monopolies. It covers alternative definitions of natural monopoly, regulatory goals, alternative ...

Joskow, Paul L.

2005-01-01T23:59:59.000Z

113

Historical Natural Gas Annual  

U.S. Energy Information Administration (EIA) Indexed Site

8 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

114

Historical Natural Gas Annual  

U.S. Energy Information Administration (EIA) Indexed Site

6 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

115

Historical Natural Gas Annual  

U.S. Energy Information Administration (EIA) Indexed Site

7 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

116

Natural Gas Rules (Louisiana)  

Broader source: Energy.gov [DOE]

The Louisiana Department of Natural Resources administers the rules that govern natural gas exploration and extraction in the state. DNR works with the Louisiana Department of Environmental...

117

Natural Resources Districts (Nebraska)  

Broader source: Energy.gov [DOE]

This statute establishes Natural Resources District, encompassing all of the area of the state, to conserve, protect, develop, and manage Nebraska's natural resources. These districts replace and...

118

Quantitative and qualitative measures of decomposition: Is there a link?  

SciTech Connect (OSTI)

Decomposition rates of loblolly pine coarse woody debris (CWD) were determined by mass loss and wood density changes for trees that differed in source of mortality (natural, girdle-poison, and felling). Specifically, three treatments were examined: (1) control (CON): natural mortality; (2) CD: 5-fold increase in CWD compared with the CON; and (3) CS: 12-fold increase in snags compared with the CON. The additional CWD in the CD treatment plots and the additional snags in the CS plots were achieved by felling (for the CD plots) or girdling followed by herbicide injection (for the CS plots) select trees in these plots. Consequently,mortality on the CD plots is due to natural causes and felling. Likewise, mortality on the CS plots is due to natural causes and girdle-poison. In each treatment plot, mortality due to natural causes was inventoried since 1997, whereas mortality due to girdle-poison and felling were inventoried since 2001. No significant difference was detected between the rates of decomposition for the CWD on these treatment plots, indicating that source of the tree mortality did not influence rates of decomposition once the tree fell. These experimental measures of decomposition were compared with two decay classification systems (three- and five-unit classifications) to determine linkages. Changes in wood density did not correlate to any decay classification, whereas mass loss had a weak correlation with decay class. However, the large degree of variation limits the utility of decay classification systems in estimating mass loss.

Eaton, Robert, J.; Sanchez, Felipe, G.

2009-03-01T23:59:59.000Z

119

Numerical integration of variational equations  

E-Print Network [OSTI]

We present and compare different numerical schemes for the integration of the variational equations of autonomous Hamiltonian systems whose kinetic energy is quadratic in the generalized momenta and whose potential is a function of the generalized positions. We apply these techniques to Hamiltonian systems of various degrees of freedom, and investigate their efficiency in accurately reproducing well-known properties of chaos indicators like the Lyapunov Characteristic Exponents (LCEs) and the Generalized Alignment Indices (GALIs). We find that the best numerical performance is exhibited by the \\textit{`tangent map (TM) method'}, a scheme based on symplectic integration techniques which proves to be optimal in speed and accuracy. According to this method, a symplectic integrator is used to approximate the solution of the Hamilton's equations of motion by the repeated action of a symplectic map $S$, while the corresponding tangent map $TS$, is used for the integration of the variational equations. A simple and systematic technique to construct $TS$ is also presented.

Ch. Skokos; E. Gerlach

2010-09-29T23:59:59.000Z

120

Frictional granular mechanics: A variational approach  

SciTech Connect (OSTI)

The mechanical properties of a cohesionless granular material are evaluated from grain-scale simulations. Intergranular interactions, including friction and sliding, are modeled by a set of contact rules based on the theories of Hertz, Mindlin, and Deresiewicz. A computer generated, three-dimensional, irregular pack of spherical grains is loaded by incremental displacement of its boundaries. Deformation is described by a sequence of static equilibrium configurations of the pack. A variational approach is employed to find the equilibrium configurations by minimizing the total work against the intergranular loads. Effective elastic moduli are evaluated from the intergranular forces and the deformation of the pack. Good agreement between the computed and measured moduli, achieved with no adjustment of material parameters, establishes the physical soundness of the proposed model.

Holtzman, R.; Silin, D.B.; Patzek, T.W.

2009-10-16T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Pennsylvania's Natural Gas Future  

E-Print Network [OSTI]

1 Pennsylvania's Natural Gas Future Penn State Natural Gas Utilization Workshop Bradley Hall sales to commercial and industrial customers ­ Natural gas, power, oil · Power generation ­ FossilMMBtuEquivalent Wellhead Gas Price, $/MMBtu Monthly US Spot Oil Price, $/MMBtu* U.S. Crude Oil vs. Natural Gas Prices, 2005

Lee, Dongwon

122

Research Highlights Nature Nanotechnology  

E-Print Network [OSTI]

© 2009 APS Research Highlights Nature Nanotechnology Published online: 17 July 2009 | doi:10 perfect fluid. Phys. Rev. Lett. 103, 025301 (2009). | Article |1. Nature Nanotechnology ISSN 1748 : Nature Nanotechnology http://www.nature.com/nnano/reshigh/2009/0709/full/nnano.2009.222.html 1 of 1 18

MĂĽller, Markus

123

Problems of Quantum Measurement  

E-Print Network [OSTI]

We derive the probabilities of measurement results from Schroedinger's equation plus a definition of macroscopic as a particular kind of thermodynamic limit. Bohr's insight that a measurement apparatus must be classical in nature and classically describable is made precise in a mathematical sense analogous to the procedures of classical statistical mechanics and the study of Hamiltonian heat baths.

Joseph F. Johnson

2007-10-02T23:59:59.000Z

124

340 Nature Vol. 264 November 25 1976 IS W.-F ----I  

E-Print Network [OSTI]

340 Nature Vol. 264 November 25 1976 IS W.-F ----I letters to nature Direct test of the constancy higher than Table 1 Comparison of upper bounds of the variation of nuclear constants Dyson, Davies discovered traces of ancient (1.8 x IO9 yr old) natural nuclear reactors in the uranium deposits of Oklo

Shlyakhter, Ilya

125

Natural gas monthly  

SciTech Connect (OSTI)

The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the Natural Gas Monthly features articles designed to assist readers in using and interpreting natural gas information.

NONE

1998-01-01T23:59:59.000Z

126

Super-Natural MSSM  

E-Print Network [OSTI]

We point out that the electroweak fine-tuning problem in the supersymmetric Standard Models (SSMs) is mainly due to the high energy definition of the fine-tuning measure. We propose super-natural supersymmetry which has an order one high energy fine-tuning measure automatically. The key point is that all the mass parameters in the SSMs arise from a single supersymmetry breaking parameter. In this paper, we show that there is no supersymmetry electroweak fine-tuning problem explicitly in the Minimal SSM (MSSM) with no-scale supergravity and Giudice-Masiero (GM) mechanism. We demonstrate that the $Z$-boson mass, the supersymmteric Higgs mixing parameter $\\mu$ at the unification scale, and the sparticle spectrum can be given as functions of the universal gaugino mass $M_{1/2}$. Because the light stau is the lightest supersymmetric particle (LSP) in the no-scale MSSM, to preserve $R$ parity, we introduce a non-thermally generated axino as the LSP dark matter candidate. We estimate the lifetime of the light stau b...

Du, Guangle; Nanopoulos, D V; Raza, Shabbar

2015-01-01T23:59:59.000Z

127

An Environmental Variation of Constants  

E-Print Network [OSTI]

Models of modified gravity, whereby local tests of gravity are evaded thanks to a screening mechanism of the chameleon or Damour-Polyakov types, lead to a spatial variation of the particle masses and the fine structure constant. This is triggered by the environmental dependence of the value of the scalar field whose presence modifies gravity. In dense media, the field settles at a density dependent value while in sparse environments it takes the background cosmological value. We estimate that the maximal deviation of constants from their present values is constrained by local tests of gravity, and must be less than $10^{-6}$.

Philippe Brax

2014-06-24T23:59:59.000Z

128

Compositional Variation Within Hybrid Nanostructures  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User Group andCompositional Variation Within Hybrid Nanostructures

129

Compositional Variation Within Hybrid Nanostructures  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationCleanCommunity InvolvementCompositional Variation Within Hybrid

130

Compositional Variation Within Hybrid Nanostructures  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationCleanCommunity InvolvementCompositional Variation Within

131

Hydrogen isotope fractionation in freshwater algae: I. Variations among lipids and species  

E-Print Network [OSTI]

Hydrogen isotope fractionation in freshwater algae: I. Variations among lipids and species Zhaohui Abstract Five species of freshwater green algae, including three strains of Botryococcus braunii (two in the algae, including alkadienes, botryococcenes, heptadecenes, fatty acids, and phytadiene, were measured

Sachs, Julian P.

132

Cascade Natural Gas- Conservation Incentives for New Homes  

Broader source: Energy.gov [DOE]

Cascade Natural Gas offers a variety of incentives to residential customers for including energy efficiency measures in new homes in Washington and Oregon. Incentives are available directly from...

133

Nature/Culture/Seawater  

E-Print Network [OSTI]

This essay considers seawater as a substance and symbol in anthropological and social theory. Seawater has occupied an ambiguous place with respect to anthropological categories of nature and culture. Seawater as nature ...

Helmreich, Stefan

134

Natural gas annual 1996  

SciTech Connect (OSTI)

This document provides information on the supply and disposition of natural gas to a wide audience. The 1996 data are presented in a sequence that follows natural gas from it`s production to it`s end use.

NONE

1997-09-01T23:59:59.000Z

135

Natural Resources Research Institute  

E-Print Network [OSTI]

/Loll ThermoWood Hybrid Poplars Peat A boost for the peat industry Value in Minnesota peat deposits Natural che

Netoff, Theoden

136

Natural gas annual 1994  

SciTech Connect (OSTI)

The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1994 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1990 to 1994 for each Census Division and each State. Annual historical data are shown at the national level.

NONE

1995-11-17T23:59:59.000Z

137

Natural gas annual 1995  

SciTech Connect (OSTI)

The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1995 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1991 to 1995 for each Census Division and each State. Annual historical data are shown at the national level.

NONE

1996-11-01T23:59:59.000Z

138

NATURAL CONVECTION IN ROOM GEOMETRIES  

SciTech Connect (OSTI)

Computer programs have been developed to numerically simulate natural convection in room geometries in two and three dimensions. The programs have been validated using published data from the literature, results from a full-scale experiment performed at Massachusetts Institute of Technology, and results from a small-scale experiment reported here. One of the computer programs has been used to study the influence of natural convection on the thermal performance of a single thermal zone in a direct-gain passive solar building. The results indicate that the building heating loads calculated by standard building energy analysis methods may be in error by as much as 50% as a result of their use of common assumptions regarding the convection processes which occur in an enclosure. It is also found that the convective heat transfer coefficients between the air and the enclosure surfaces can be substantially different from the values assumed in the standard building energy analysis methods, and can exhibit significant variations across a given surface.

Gadgil, A.; Bauman, Fred; Kammerud, R.; Ruberg, K.

1980-06-01T23:59:59.000Z

139

Detecting Density Variations and Nanovoids  

SciTech Connect (OSTI)

A combination of simulated and experimental data has been used to investigate the size range of nanovoids that can be detected in atom probe tomography data. Simulated atom probe tomography data have revealed that nanovoids as small as 1 nm in diameter can be detected in atom probe tomography data with the use of iso-density surfaces. Iso-density surfaces may be used to quantify the size, morphology and number density of nanovoids and other variations in density in atom probe tomography data. Experimental data from an aluminum-yttrium-iron metallic glass ribbon have revealed the effectiveness of this approach. Combining iso-density surfaces with atom maps also permits the segregation of solute to the nanovoids to be investigated. Field ion microscopy and thin section atom maps have also been used to detect pores and larger voids.

Miller, Michael K [ORNL; Longstreth-Spoor, L. [Washington University, St. Louis; Kelton, K. F. [Washington University, St. Louis

2011-01-01T23:59:59.000Z

140

Variations of Seminula Argentea (Shepherd)  

E-Print Network [OSTI]

not develop^ in response to merely local changes in the environment for similar forms are found in the Pennsylvanian strata of Hew Mexico, and occasionally in the lower Coal Measure beds of Kansas. However, the great chang* in land and sea near the close.... Nat. Sei. Philadelphia Proc,, p. 231. . Lower Coal Measures: Des Moines,Iowa. 1891 Athyris subtilita. ihitfield, New York Acad. Sei. Ann. vol, 5, p. 604, pl. 16, figs. 7-9. Coal Measures: Hocking County, Ohio. 1893 Seminula subtilita. Hall...

Miller, Raymond Foster

1912-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline...  

U.S. Energy Information Administration (EIA) Indexed Site

Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Thirty Largest U.S. Interstate Natural...

142

Resilience-Based Design of Natural Gas Distribution Networks  

E-Print Network [OSTI]

Case Study Resilience-Based Design of Natural Gas Distribution Networks G. P. Cimellaro, Ph.D., A response to natural disasters. In this paper, a new performance index measuring the functionality of a gas; Disaster resilience; Vulnerability; Gas networks; Damage assessment; Lifelines; Serviceability; Natural gas

Bruneau, Michel

143

Scuola Normale Superiore -Pisa September 1988 A Variational Definition of the Strain Energy  

E-Print Network [OSTI]

.1) is a natural regularity assumption, (2.2) has the important physical meaning that the energy becomes infinite when the volume locally vanishes; finally, (2.3) and (2.4) are growth assumptions on the energy. WeScuola Normale Superiore - Pisa September 1988 A Variational Definition of the Strain Energy

Acerbi, Emilio

144

THE RESPONSE OF HONEY BEES TO VARIATIONS IN SOLAR RADIATION AND TEMPERATURE  

E-Print Network [OSTI]

THE RESPONSE OF HONEY BEES TO VARIATIONS IN SOLAR RADIATION AND TEMPERATURE Robert M. BURRILL elements, solar radiation and temperature are considered. While these two elements are naturally numbers of departures. In the case of solar radiation intensity, the response is both positive

Paris-Sud XI, Université de

145

Minimizing Variation in Outdoor CPV Power Ratings: Preprint  

SciTech Connect (OSTI)

The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

Muller, M.; Marion, B.; Rodriguez, J.; Kurtz, S.

2011-07-01T23:59:59.000Z

146

Accommodating subject and instrument variations in spectroscopic determinations  

DOE Patents [OSTI]

A method and apparatus for measuring a biological attribute, such as the concentration of an analyte, particularly a blood analyte in tissue such as glucose. The method utilizes spectrographic techniques in conjunction with an improved instrument-tailored or subject-tailored calibration model. In a calibration phase, calibration model data is modified to reduce or eliminate instrument-specific attributes, resulting in a calibration data set modeling intra-instrument or intra-subject variation. In a prediction phase, the prediction process is tailored for each target instrument separately using a minimal number of spectral measurements from each instrument or subject.

Haas, Michael J. (Albuquerque, NM); Rowe, Robert K. (Corrales, NM); Thomas, Edward V. (Albuquerque, NM)

2006-08-29T23:59:59.000Z

147

Optimization Online - Variational principles with generalized ...  

E-Print Network [OSTI]

Dec 23, 2014 ... Variational principles with generalized distances and applications to behavioral sciences. T. Q. Bao(btruong ***at*** nmu.edu)

T. Q. Bao

2014-12-23T23:59:59.000Z

148

Optimization Online - Total variation superiorization schemes in ...  

E-Print Network [OSTI]

Oct 8, 2010 ... Total variation superiorization schemes in proton computed tomography ... check improved the image quality, in particular image noise, in the ...

S.N. Penfold

2010-10-08T23:59:59.000Z

149

Algorithms for Bilevel Pseudomonotone Variational Inequality ...  

E-Print Network [OSTI]

Page 1 ... Variational innequality (shortlyVI) is a fundamental topic in applied mathematics. VIs are used for formulating and solving various problems arising in

2012-01-12T23:59:59.000Z

150

No variations in transit times for Qatar-1 b  

E-Print Network [OSTI]

The transiting hot Jupiter planet Qatar-1 b was presented to exhibit variations in transit times that could be of perturbative nature. A hot Jupiter with a planetary companion on a nearby orbit would constitute an unprecedented planetary configuration, important for theories of formation and evolution of planetary systems. We performed a photometric follow-up campaign to confirm or refute transit timing variations. We extend the baseline of transit observations by acquiring 18 new transit light curves acquired with 0.6-2.0 m telescopes. These photometric time series, together with data available in the literature, were analyzed in a homogenous way to derive reliable transit parameters and their uncertainties. We show that the dataset of transit times is consistent with a linear ephemeris leaving no hint for any periodic variations with a range of 1 min. We find no compelling evidence for the existence of a close-in planetary companion to Qatar-1 b. This finding is in line with a paradigm that hot Jupiters are...

Maciejewski, G; Aceituno, F J; Ohlert, J; Puchalski, D; Dimitrov, D; Seeliger, M; Kitze, M; Raetz, St; Errman, R; Gilbert, H; Pannicke, A; Schmidt, J -G; Neuhäuser, R

2015-01-01T23:59:59.000Z

151

INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION  

SciTech Connect (OSTI)

The latitudinal distributions of the yearly mean rotation rates measured by Suzuki in 1998 and 2012 and Pulkkinen and Tuominen in 1998 are utilized to investigate internal-cycle variation of solar differential rotation. The rotation rate at the solar equator seems to have decreased since cycle 10 onward. The coefficient B of solar differential rotation, which represents the latitudinal gradient of rotation, is found to be smaller in the several years after the minimum of a solar cycle than in the several years after the maximum time of the cycle, and it peaks several years after the maximum time of the solar cycle. The internal-cycle variation of the solar rotation rates looks similar in profile to that of the coefficient B. A new explanation is proposed to address such a solar-cycle-related variation of the solar rotation rates. Weak magnetic fields may more effectively reflect differentiation at low latitudes with high rotation rates than at high latitudes with low rotation rates, and strong magnetic fields may more effectively repress differentiation at relatively low latitudes than at high latitudes. The internal-cycle variation is inferred as the result of both the latitudinal migration of the surface torsional pattern and the repression of strong magnetic activity in differentiation.

Li, K. J.; Xie, J. L.; Shi, X. J., E-mail: lkj@ynao.ac.cn [National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011 (China)

2013-06-01T23:59:59.000Z

152

Liquefied Natural Gas (Iowa)  

Broader source: Energy.gov [DOE]

This document adopts the standards promulgated by the National Fire Protection Association as rules for the transportation, storage, handling, and use of liquefied natural gas. The NFPA standards...

153

Natural gas dehydration apparatus  

DOE Patents [OSTI]

A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent.

Wijmans, Johannes G; Ng, Alvin; Mairal, Anurag P

2006-11-07T23:59:59.000Z

154

Natural Resources Specialist  

Broader source: Energy.gov [DOE]

(See Frequently Asked Questions for more information). Where would I be working ? Western Area Power Administration, Corporate Services Office, Office of the Chief Operating Officer, Natural...

155

Natural Heritage Program (Missouri)  

Broader source: Energy.gov [DOE]

Natural Heritage Reviews are conducted by the Missouri Department of Conservation on request in order to assess proposed project sites and adjacent lands. Reviews determine whether potential...

156

Natural Cooling Retrofit  

E-Print Network [OSTI]

of the most important design considerations for any method of Natural Cool ing is the chil led water temperature range selected for use during Natural Cool ing. Figure VI shows that for a hypo thetical Chicago plant, the hours of operation for a Natural..." system on the Natural Cool ing cycle. As the pressures and flow rates of the condenser and chil led water systems are seldom the same, the designer must pay careful attention to the cross over system design to ensure harmonious operations on both...

Fenster, L. C.; Grantier, A. J.

1981-01-01T23:59:59.000Z

157

,"Colorado Natural Gas Prices"  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Colorado Natural Gas Prices",8,"Monthly","112014","1151989" ,"Release Date:","1302015"...

158

Natural gas annual 1997  

SciTech Connect (OSTI)

The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. The 1997 data are presented in a sequence that follows natural gas (including supplemental supplies) from its production to its end use. This is followed by tables summarizing natural gas supply and disposition from 1993 to 1997 for each Census Division and each State. Annual historical data are shown at the national level. 27 figs., 109 tabs.

NONE

1998-10-01T23:59:59.000Z

159

Warner College of Natural Resources Warner College of Natural  

E-Print Network [OSTI]

, and scientific investigation of renewable and nonrenewable natural resources. Programs include the study of everyWarner College of Natural Resources Warner College of Natural Resources Office in Natural Resources, and Conservation Biology Forestry Geology Natural Resource Recreation and Tourism Natural Resources Management

Collett Jr., Jeffrey L.

160

Method and apparatus for generating a natural crack  

DOE Patents [OSTI]

A method and apparatus for generating a measurable natural crack includes forming a primary notch in the surface of a solid material. A nonsustained single pressure pulse is then generated in the vicinity of the primary notch, reuslting in the formation of a shock wave which travels through the material. The shock wave creates a measurable natural crack within the material which extends from the primary notch. The natural crack formed possesses predictable geometry, location and orientation.

Fulton, F.J.; Honodel, C.A.; Holman, W.R.; Weingart, R.C.

1982-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Generating Beta Variates Via Patchwork Rejection \\Lambda  

E-Print Network [OSTI]

Generating Beta Variates Via Patchwork Rejection \\Lambda H. Zechner and E. Stadlober, Graz --- Zusammenfassung Generating Beta Variates Via Patchwork Rejection. A new algorithm for sampling from beta(p; q deviates can often be accepted immediately, so that much fewer than two uniforms are needed for one beta

Stadlober, Ernst

162

A Fitting Robot for Variational Analysis  

E-Print Network [OSTI]

We develop a robot algorithm to maximise the number of distinct states reliably extracted from correlator data using the variational analysis method. The robot explores the variational parameter space and attempts to remove, as far as possible, the human element from the fitting of the subsequent orthogonalised data.

Alan Ó Cais; Derek Leinweber; Selim Mahbub; Tony Williams

2008-12-18T23:59:59.000Z

163

Nucleotide Frequency Variation Across Human Genes  

E-Print Network [OSTI]

Nucleotide Frequency Variation Across Human Genes Elizabeth Louie, Jurg Ott, and Jacek Majewski1 The Rockefeller University, New York, New York 10021, USA The frequencies of individual nucleotides exhibit significant fluctuations across eukaryotic genes. In this paper, we investigate nucleotide variation across

Majewski, Jacek

164

A Variational Formulation of Kinematic Waves 1 A VARIATIONAL FORMULATION OF  

E-Print Network [OSTI]

A Variational Formulation of Kinematic Waves 1 A VARIATIONAL FORMULATION OF KINEMATIC WAVES proposes two algorithms that, based on a variational version of kinematic wave (KW) theory (Daganzo, 2003, University of California, Berkeley, California, USA ABSTRACT It has been recently shown that all kinematic

Daganzo, Carlos F.

165

Hourly and daily variations of xylem sapflow in sweet chestnut coppices  

E-Print Network [OSTI]

Hourly and daily variations of xylem sapflow in sweet chestnut coppices using a thermal measurement in the thinned coppice. Materials and Methods A xylem sapflow measurement sensor com- prises two cylindrical u (°C). Psychrometer and net-radiometer were in- stalled on a tower in the thinned coppice

Paris-Sud XI, Université de

166

Methods for measuring turbine efficiency  

SciTech Connect (OSTI)

This article describes the most common methods used for measuring hydro turbine efficiency. These methods are the acoustic flowmeter method, the Gibson (pressure-time) method, pressure drop across a flow restriction, propeller-driven flowmeters, the volumetric method, Winter-Kennedy taps, and the thermodynamic method. A new computerized variation of the Gibson method is also described.

O'Kelly, F.

1992-04-01T23:59:59.000Z

167

47 Natural Gas Market Trends NATURAL GAS MARKET TRENDS  

E-Print Network [OSTI]

47 Natural Gas Market Trends Chapter 5 NATURAL GAS MARKET TRENDS INTRODUCTION Natural gas discusses current natural gas market conditions in California and the rest of North America, followed on the outlook for demand, supply, and price of natural gas for the forecasted 20-year horizon. It also addresses

168

Nature Preserves (North Dakota)  

Broader source: Energy.gov [DOE]

The Parks and Recreation Department is responsible for managing and acquiring designated nature areas in the state of North Dakota. New construction and development is severely restricted on these...

169

NATURAL MARINE HYDROCARBON SEEPAGE  

E-Print Network [OSTI]

affects ocean chemistry (Dando and Hovland, 1992) and provides a natural source of petroleum pollution the water column above submarine vents, plumes of hydrocarbon gas bubbles act as acoustic scattering targets

Luyendyk, Bruce

170

Natural Resource Specialist  

Broader source: Energy.gov [DOE]

A successful candidate in this position will serve as a Natural Resource Specialist responsible for participating in the development and implementation of short-term and long-term regional (multi...

171

Natural Gas Regulations (Kentucky)  

Broader source: Energy.gov [DOE]

Kentucky Administrative Regulation title 805 promulgates the rules and regulations pertaining to natural gas production in Kentucky. In addition to KAR title 405, chapter 30, which pertains to any...

172

Natural gas monthly  

SciTech Connect (OSTI)

This document highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Data presented include volume and price, production, consumption, underground storage, and interstate pipeline activities.

NONE

1996-05-01T23:59:59.000Z

173

GEOMETRIC COMPUTATIONAL ELECTRODYNAMICS WITH VARIATIONAL INTEGRATORS  

E-Print Network [OSTI]

GEOMETRIC COMPUTATIONAL ELECTRODYNAMICS WITH VARIATIONAL INTEGRATORS AND DISCRETE DIFFERENTIAL develop a structure-preserving discretization of the Lagrangian framework for electromagnetism, combining) and remains one of the most successful numerical meth- ods used in the field of computational electromagnetics

Desbrun, Mathieu

174

Design Methodology for Clocked Storage Elements Robust to Process Variations Joosik Moon , Mustafa Aktan , and Vojin G. Oklobdzija  

E-Print Network [OSTI]

are selected and evaluated by using energy-delay space analysis. The delay variations of the energy-efficient designs for each clocked storage element are measured and compared. We show how much topology selection

California at Davis, University of

175

EIA - Natural Gas Pipeline Network - Natural Gas Supply Basins...  

Gasoline and Diesel Fuel Update (EIA)

with selected updates U.S. Natural Gas Supply Basins Relative to Major Natural Gas Pipeline Transportation Corridors, 2008 U.S. Natural Gas Transporation Corridors out of Major...

176

Natural radiation environment III. [Lead Abstract  

SciTech Connect (OSTI)

Separate abstracts were prepared for the 52 research papers presented at this symposium in April 1978. The major topics in this volume deal with penetrating radiation measurements, radiation surveys and population exposure, radioactivity in the indoor environment, and technologically enhanced natural radioactivity. (KRM)

Gesell, T.F.; Lowder, W.M. (eds.)

1980-01-01T23:59:59.000Z

177

Welcome FUPWG- Natural Gas Overview  

Broader source: Energy.gov [DOE]

Presentation—given at the Federal Utility Partnership Working Group (FUPWG) Fall 2008 meeting—provides an overview of natural gas, including emissions, compressed natural gas (CNG) vehicles, and landfill gas supplement for natural gas system.

178

Arizona State Park's Natural Area Program1 Patricia M. Bergthold2  

E-Print Network [OSTI]

of the identified Natural Areas contain riparian elements. Developing protective strategies, coop eration areas, to recommend protective measures, and to register protected sites. NATURAL AREA PROGRAM STRUCTUREArizona State Park's Natural Area Program1 Patricia M. Bergthold2 Abstract.--A Natural Area Program

179

Investigating genetic determinants of phenotypic variation in natural isolates of Saccharomyces cerevisiae  

E-Print Network [OSTI]

UWOPS05.227.2; WE1, RM11-1; WE2, BC187); each row shows dataUWOPS05.217.3; WE1, RM11-1; WE2, BC187), and each row shows

Lee, Hana

2012-01-01T23:59:59.000Z

180

Genetic basis for natural variation in flowering time in local populations of Arabidopsis thaliana   

E-Print Network [OSTI]

Factors affecting flowering time have been extensively studied for decades. Greater understanding of flowering time has wider implications in agriculture and ecology as the trait is crucial to optimising reproductive ...

McCulloch, Hayley Louise

2012-06-22T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Natural epigenetic polymorphisms lead to intraspecific variation in Arabidopsis gene imprinting  

E-Print Network [OSTI]

Imprinted gene expression occurs during seed development in plants and is associated with differential DNA methylation of parental alleles, particularly at proximal transposable elements (TEs). Imprinting variability could ...

Pignatta, Daniela

182

Turing patterns visualized by index of refraction variations  

SciTech Connect (OSTI)

Gel pattern is visualized by the refractive index variations.The fossil patterns correspond to a spatial variation in the refractive index. (AIP)

Lee, K.J.; McCormick, W.D.; Swinney, H.L. (Center for Nonlinear Dynamics and Department of Physics, The University of Texas, Austin, Texas 78712 (United States)); Noszticzius, Z. (Center for Nonlinear Dynamics and Department of Physics, The University of Texas, Austin, Texas 78712 (United States) Department of Chemical Physics, The Technical University of Budapest, H-1521, Budapest (Hungary))

1992-03-01T23:59:59.000Z

183

Comparison of reduced-order, sequential and variational data assimilation methods in the tropical Pacific Ocean  

E-Print Network [OSTI]

This paper presents a comparison of two reduced-order, sequential and variational data assimilation methods: the SEEK filter and the R-4D-Var. A hybridization of the two, combining the variational framework and the sequential evolution of covariance matrices, is also preliminarily investigated and assessed in the same experimental conditions. The comparison is performed using the twin-experiment approach on a model of the Tropical Pacific domain. The assimilated data are simulated temperature profiles at the locations of the TAO/TRITON array moorings. It is shown that, in a quasi-linear regime, both methods produce similarly good results. However the hybrid approach provides slightly better results and thus appears as potentially fruitful. In a more non-linear regime, when Tropical Instability Waves develop, the global nature of the variational approach helps control model dynamics better than the sequential approach of the SEEK filter. This aspect is probably enhanced by the context of the experiments in tha...

Robert, Céline; Verron, Jacques

2006-01-01T23:59:59.000Z

184

Historical Natural Gas Annual 1999  

U.S. Energy Information Administration (EIA) Indexed Site

1999 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

185

Natural Gas | Department of Energy  

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

Fossil Natural Gas Natural Gas September 15, 2014 NETL Releases Hydraulic Fracturing Study The National Energy Technology Laboratory has released a technical report on the...

186

EIA - Natural Gas Publications  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623Primary MetalsOriginCapacityNatural Gas

187

Minimizing Variation in Outdoor CPV Power Ratings (Presentation)  

SciTech Connect (OSTI)

Presented at the 7th International Conference on Concentrating Photovoltaic Systems (CPV-7), 4-6 April 2011, Las Vegas, Nevada. The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

Muller, M.

2011-04-01T23:59:59.000Z

188

Go Abroad in Natural ResourcesNatural Resources  

E-Print Network [OSTI]

Go Abroad in Natural ResourcesNatural Resources Program Contact: Connie Patterson Program.edu/ international The Natural Resources degree is ideally suited for students who wish to study abroad! The sustainable management of natural resources is a fundamental issue, both locally and globally. Scientists

Escher, Christine

189

Transverse Kick Analysis of SSR1 Due to Possible Geometrical Variations in Fabrication  

SciTech Connect (OSTI)

Due to fabrication tolerance, it is expected that some geometrical variations could happen to the SSR1 cavities of Project X, like small shifts in the transverse direction of the beam pipe or the spoke. It is necessary to evaluate the resultant transverse kick due to these geometrical variations, in order to make sure that they are within the limits of the correctors in the solenoids. In this paper, we report the transverse kick values for various fabrications errors and the sensitivity of the beam to these errors. Transverse kick that could happen in SSR1 cavities due to geometrical variations of the fabricated cavities from the designed geometry has been analysed and evaluated. From fabrication experience, three kinds of variations were under investigation concerning the alignment of both the beam pipe and spoke with respect to the beam axis. Simulation study has been carried out implementing these variations in the simulation model. CMM measurements of five fabricated SSR1 cavities were carried out to investigate the amount of physical misalignments of the beam pipe and spoke. Bead-pull measurements were also conducted to evaluate the transverse kick values in the fabricated cavities. Simulation and measurements are relatively in good agreement. Maximum kick in the fabricated cavities is within 154 keV that would induce about 1.12 mrad beam deviation, which could be definitely corrected with the 10 mrad specified correctors of Project X.

Yakovlev, V.P.; /Fermilab; Awida, M.H.; Berrutti, P.; Gonin, I.V.; Khabiboulline, T.N.; /Fermilab

2012-05-01T23:59:59.000Z

190

Natural Gas Prices Forecast Comparison--AEO vs. Natural Gas Markets  

SciTech Connect (OSTI)

This paper evaluates the accuracy of two methods to forecast natural gas prices: using the Energy Information Administration's ''Annual Energy Outlook'' forecasted price (AEO) and the ''Henry Hub'' compared to U.S. Wellhead futures price. A statistical analysis is performed to determine the relative accuracy of the two measures in the recent past. A statistical analysis suggests that the Henry Hub futures price provides a more accurate average forecast of natural gas prices than the AEO. For example, the Henry Hub futures price underestimated the natural gas price by 35 cents per thousand cubic feet (11.5 percent) between 1996 and 2003 and the AEO underestimated by 71 cents per thousand cubic feet (23.4 percent). Upon closer inspection, a liner regression analysis reveals that two distinct time periods exist, the period between 1996 to 1999 and the period between 2000 to 2003. For the time period between 1996 to 1999, AEO showed a weak negative correlation (R-square = 0.19) between forecast price by actual U.S. Wellhead natural gas price versus the Henry Hub with a weak positive correlation (R-square = 0.20) between forecasted price and U.S. Wellhead natural gas price. During the time period between 2000 to 2003, AEO shows a moderate positive correlation (R-square = 0.37) between forecasted natural gas price and U.S. Wellhead natural gas price versus the Henry Hub that show a moderate positive correlation (R-square = 0.36) between forecast price and U.S. Wellhead natural gas price. These results suggest that agencies forecasting natural gas prices should consider incorporating the Henry Hub natural gas futures price into their forecasting models along with the AEO forecast. Our analysis is very preliminary and is based on a very small data set. Naturally the results of the analysis may change, as more data is made available.

Wong-Parodi, Gabrielle; Lekov, Alex; Dale, Larry

2005-02-09T23:59:59.000Z

191

Simplified method for determining heat of combustion of natural gas  

SciTech Connect (OSTI)

A simplified technique for determination of the heat of combustion of natural gas has been developed. It is a variation of the previously developed technique wherein the carrier air, in which the test sample was burnt, was oxygen enriched to adjust the mole fraction of oxygen in the combustion product gases up to that in the carrier air. The new technique eliminates the need for oxygen enrichment of the experimental mixtures and natural gas samples and has been found to predict their heats of combustion to an uncertainty of the order of 1 percent.

Singh, J.J.; Chegini, H.; Mall, G.H.

1987-04-01T23:59:59.000Z

192

Dark EnergyDark Energy from variation of thefrom variation of the  

E-Print Network [OSTI]

, soil ! #12;Dark EnergyDark Energy dominates the Universedominates the Universe EnergyEnergy -- densityDark EnergyDark Energy from variation of thefrom variation of the fundamental scalefundamental in the Universedensity in the Universe == Matter + Dark EnergyMatter + Dark Energy 25 % + 75 %25 % + 75 % #12;Abell 2255

Heermann, Dieter W.

193

STEWARDSHIP MAINTAINING NATURAL RICHES  

E-Print Network [OSTI]

;Outstanding Results 5 Energy Conservation: Saved 240 Million KWH over last fifteen years. Green BuildingLAND STEWARDSHIP MAINTAINING NATURAL RICHES TRANSPORTATION GOING THE EXTRA MILE GREEN BUILDING SHOWCASING INNOVATION WATER CONSERVING PRESCIOUS RESOURCES ENERGY MOVING TO A BRIGHTER FUTURE WASTE REDUCING

Ford, James

194

Natural Gas Purchasing Options  

E-Print Network [OSTI]

As a result of economic and regulatory changes, the natural gas marketplace now offers multiple options for purchasers. The purpose of this panel is to discuss short-term purchasing options and how to take advantage of these options both to lower...

Watkins, G.

195

Measuring Value in Healthcare  

E-Print Network [OSTI]

A statistical description and model of individual healthcare expenditures in the US has been developed for measuring value in healthcare. We find evidence that healthcare expenditures are quantifiable as an infusion-diffusion process, which can be thought of intuitively as a steady change in the intensity of treatment superimposed on a random process reflecting variations in the efficiency and effectiveness of treatment. The arithmetic mean represents the net average annual cost of healthcare; and when multiplied by the arithmetic standard deviation, which represents the effective risk, the result is a measure of healthcare cost control. Policymakers, providers, payors, or patients that decrease these parameters are generating value in healthcare. The model has an average absolute prediction error of approximately 10-12% across the range of expenditures which spans 6 orders of magnitude over a nearly 10-year period. For the top 1% of the population with the largest expenditures, representing 20%-30% of total ...

Gardner, Christopher

2008-01-01T23:59:59.000Z

196

Natural Radionuclide Activity Concentrations In Spas Of Argentina  

SciTech Connect (OSTI)

Geothermal waters have been used on a large scale for bathing, drinking and medical purposes. These waters can contain natural radionuclides that may increase the exposure to people. In this work the most important natural radionuclide activity concentrations in different thermal spas of Argentina were measured to characterize waters and to evaluate the exposure of workers and members of the public.

Gnoni, G.; Czerniczyniec, M.; Canoba, A.; Palacios, M. [Autoridad Regulatoria Nuclear, Av. Del Libertador 8250, Ciudad de Bs. As. (1429) (Argentina)

2008-08-07T23:59:59.000Z

197

Natural gas leak mapper  

DOE Patents [OSTI]

A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formated into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimosed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.

Reichardt, Thomas A. (Livermore, CA); Luong, Amy Khai (Dublin, CA); Kulp, Thomas J. (Livermore, CA); Devdas, Sanjay (Albany, CA)

2008-05-20T23:59:59.000Z

198

REVISED NATURAL GAS MARKET ASSESSMENT  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION REVISED NATURAL GAS MARKET ASSESSMENT In Support of the 2007's natural gas market. It covers natural gas demand, supply, infrastructure, price, and possible alternative and the related Scenarios Project, and additional updated information. California natural gas demand growth

199

Nature Conservancy University of Ottawa  

E-Print Network [OSTI]

. Natural Area Conservation Planning. 5. Natural Area Plan for the Frontenac Arch. 6. Management Planning is enough? Less than 10% of Canada's natural lands are in protected status. #12; Conservation of Private. The Conservancy is a non- advocacy, non- confrontational, private lands organization. Natural Area Property

Blouin-Demers, Gabriel

200

warnell school Forestry & Natural Resources  

E-Print Network [OSTI]

#12;#12;warnell school Forestry & Natural Resources 2009 Annual Report o #12;VisionTo be recognized as one of the top five forestry and natural resource programs in the United States. Mission's renewable natural resources; and to place latest ideas and technology in forestry and natural resource

Hall, Daniel

Note: This page contains sample records for the topic "measuring natural variations" 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

Copyright 1999 by the Genetics Society of America The Use of Microsatellite Variation to Infer Population Structure  

E-Print Network [OSTI]

, California 90007 and Interval Research, Palo Alto, California 94303 Manuscript received September 10, 1997 Population Structure and Demographic History in a Natural Model System David B. Goldstein,* Gary W. Roemer an analysis of microsatellite variation within and among populations of island foxes (Urocyon littoralis

Reich, David

202

Search for variation of fundamental constants: Strong enhancements in $X^2\\Pi$ cations of dihalogens and hydrogen halides  

E-Print Network [OSTI]

We propose to use diatomic molecular ions to search for strongly enhanced effects of variation of fundamental constants. The relative enhancement occurs in transitions between nearly degenerate levels of different nature. Since the trapping techniques for molecular ions have already been developed, the molecules HBr$^+$, HI$^+$, Br$^+_2$, I$^+_2$, IBr$^+$, ICl$^+$, and IF$^+$ are very promising candidates for such future studies.

Pasteka, L F; Flambaum, V V; Schwerdtfeger, P

2015-01-01T23:59:59.000Z

203

Hardware Acceleration for Similarity Measurement in Natural Language Processing  

E-Print Network [OSTI]

energy per similarity- computation compared to an optimized software implementation, while requiring less scaling, but in the absence of Dennard scaling, motivates an emphasis on energy- efficient accelerator- ically analyze vast text collections--using scale-out processing-- incurs high energy and hardware costs

Wenisch, Thomas F.

204

Introduction Measuring chemical and physical properties of natural water  

E-Print Network [OSTI]

metabolic gases such as methane as well as permanent gases. Data are delivered to a shore station via for which spatiotemporal variability is a key attribute (e.g., Coale et al. 1991). To be most useful

Entekhabi, Dara

205

A Variational Approach to MR Bias Correction  

E-Print Network [OSTI]

A Variational Approach to MR Bias Correction Ayres Fan Stochastic Systems Group July 17, 2003 With W. Wells, J. Fisher, M. Cetin, S. Haker, R. Mulkern, C. Tempany, A. Willsky #12;Outline 1 inhomogeneity that corrupts magnetic resonance (MR) images. Correcting for the bias field makes both human

Willsky, Alan S.

206

A Variational Approach to MR Bias Correction  

E-Print Network [OSTI]

A Variational Approach to MR Bias Correction Ayres Fan, W. Wells, J. Fisher, M. Cetin, S. Haker, A that corrupts magnetic resonance (MR) images. Correcting for the bias field makes both human analysis (e that encourages smoothness in b and piecewise smoothness in f: We generally choose p 1 to help preserve edges D

Willsky, Alan S.

207

Variational Gaussian Process Classifiers Mark N. Gibbs  

E-Print Network [OSTI]

Variational Gaussian Process Classifiers Mark N. Gibbs Cavendish Laboratory Cambridge CB3 0HE United Kingdom David J.C. MacKay \\Lambda Cavendish Laboratory Cambridge CB3 0HE United Kingdom Submitted­linear interpolation tool (Williams 1995; Williams and Rasmussen 1996), but it is not straightforward to solve

MacKay, David J.C.

208

Natural Dark Energy  

E-Print Network [OSTI]

It is now well accepted that both Dark Matter and Dark Energy are required in any successful cosmological model. Although there is ample evidence that both Dark components are necessary, the conventional theories make no prediction for the contributions from each of them. Moreover, there is usually no intrinsic relationship between the two components, and no understanding of the nature of the mysteries of the Dark Sector. Here we suggest that if the Dark Side is so seductive then we should not be restricted to just 2 components. We further suggest that the most natural model has 5 distinct forms of Dark Energy in addition to the usual Dark Matter, each contributing precisely equally to the cosmic energy density budget.

Douglas Scott; Ali Frolop

2007-03-30T23:59:59.000Z

209

Natural gas repowering experience  

SciTech Connect (OSTI)

Gas Research Institute has led a variety of projects in the past two years with respect to repowering with natural gas. These activities, including workshops, technology evaluations, and market assessments, have indicated that a significant opportunity for repowering exists. It is obvious that the electric power industry`s restructuring and the actual implementation of environmental regulations from the Clean Air Act Amendments will have significant impact on repowering with respect to timing and ultimate size of the market. This paper summarizes the results and implications of these activities in repowering with natural gas. It first addresses the size of the potential market and discusses some of the significant issues with respect to this market potential. It then provides a perspective on technical options for repowering which are likely to be competitive in the current environment. Finally, it addresses possible actions by the gas industry and GRI to facilitate development of the repowering market.

Bautista, P.J.; Fay, J.M. [Gas Research Institute, Chicago, IL (United States); Gerber, F.B. [BENTEK Energy Research, DeSoto, TX (United States)

1995-12-31T23:59:59.000Z

210

DNA Content Variation and Its Significance in the Evolution of the Genus Micrasterias (Desmidiales,  

E-Print Network [OSTI]

in their evolutionary history. However, study of genome size variation in microalgae lags behind that of higher plants Micrasterias. We applied flow-cytometric techniques of DNA quantification to microalgae and mapped the importance of cell/life cycle studies for interpretation of DNA content measurements in microalgae. Citation

211

Nature's Greatest Puzzles  

SciTech Connect (OSTI)

It is a pleasure to be part of the SLAC Summer Institute again, not simply because it is one of the great traditions in our field, but because this is a moment of great promise for particle physics. I look forward to exploring many opportunities with you over the course of our two weeks together. My first task in talking about Nature's Greatest Puzzles, the title of this year's Summer Institute, is to deconstruct the premise a little bit.

Quigg, Chris; /Fermilab

2005-02-01T23:59:59.000Z

212

Chlorophylls - natural solar cells  

E-Print Network [OSTI]

A molecular modeling study was conducted on a series of six natural occurring chlorophylls. Quantum chemistry calculated orbital energies were used to estimate frequency of transitions between occupied molecular orbital and unoccupied molecular orbital energy levels of chlorophyll molecules in vivo conditions in standard (ASTMG173) environmental conditions. Obtained results are in good agreement with energies necessary to fix the Magnesium atom by chlorophyll molecules and with occurrence of chlorophylls in living vegetal organisms.

Jantschi, Lorentz; Balan, Mugur C; Sestras, Radu E

2011-01-01T23:59:59.000Z

213

NATURAL RESOURCES ASSESSMENT  

SciTech Connect (OSTI)

The purpose of this report is to summarize the scientific work that was performed to evaluate and assess the occurrence and economic potential of natural resources within the geologic setting of the Yucca Mountain area. The extent of the regional areas of investigation for each commodity differs and those areas are described in more detail in the major subsections of this report. Natural resource assessments have focused on an area defined as the ''conceptual controlled area'' because of the requirements contained in the U.S. Nuclear Regulatory Commission Regulation, 10 CFR Part 60, to define long-term boundaries for potential radionuclide releases. New requirements (proposed 10 CFR Part 63 [Dyer 1999]) have obviated the need for defining such an area. However, for the purposes of this report, the area being discussed, in most cases, is the previously defined ''conceptual controlled area'', now renamed the ''natural resources site study area'' for this report (shown on Figure 1). Resource potential can be difficult to assess because it is dependent upon many factors, including economics (demand, supply, cost), the potential discovery of new uses for resources, or the potential discovery of synthetics to replace natural resource use. The evaluations summarized are based on present-day use and economic potential of the resources. The objective of this report is to summarize the existing reports and information for the Yucca Mountain area on: (1) Metallic mineral and mined energy resources (such as gold, silver, etc., including uranium); (2) Industrial rocks and minerals (such as sand, gravel, building stone, etc.); (3) Hydrocarbons (including oil, natural gas, tar sands, oil shales, and coal); and (4) Geothermal resources. Groundwater is present at the Yucca Mountain site at depths ranging from 500 to 750 m (about 1,600 to 2,500 ft) below the ground surface. Groundwater resources are not discussed in this report, but are planned to be included in the hydrology section of future revisions of the ''Yucca Mountain Site Description'' (CRWMS M&O 2000c).

D.F. Fenster

2000-12-11T23:59:59.000Z

214

Artificial nature : water infrastructure and its experience as natural space  

E-Print Network [OSTI]

This work is about water infrastructure and its experience as urban and natural space. It deals with the concepts of nature/geography, technology, and the integral experiential space by analyzing water dams and reservoirs ...

Demirta?, Fatma Asl?han, 1970-

2000-01-01T23:59:59.000Z

215

Natural gas monthly, April 1999  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. There are two feature articles in this issue: Natural gas 1998: Issues and trends, Executive summary; and Special report: Natural gas 1998: A preliminary summary. 6 figs., 28 tabs.

NONE

1999-05-06T23:59:59.000Z

216

Radiation Doses to Hanford Workers from Natural Potassium-40  

SciTech Connect (OSTI)

The chemical element potassium is an essential mineral in people and is subject to homeostatic regulation. Natural potassium comprises three isotopes, 39K, 40K, and 41K. Potassium-40 is radioactive, with a half life of 1.248 billion years. In most transitions, it emits a ?? particle with a maximum energy of 0.560 MeV, and sometimes a gamma photon of 1.461 MeV. Because it is ubiquitous, 40K produces radiation dose to all human beings. This report contains the results of new measurements of 40K in 248 adult females and 2,037 adult males performed at the Department of Energy Hanford Site in 2006 and 2007. Potassium concentrations diminish with age, are generally lower in women than in men, and decrease with body mass index (BMI). The average annual effective dose from 40K in the body is 0.149 mSv y?1 for men and 0.123 mSv y?1 women respectively. Averaged over both men and women, the average effective dose per year is 0.136 mSv y?1. Calculated effective doses range from 0.069 to 0.243 mSv y?1 for adult males, and 0.067 to 0.203 mSv y?1 for adult females, a roughly three-fold variation for each gender. The need for dosimetric phantoms with a greater variety of BMI values should be investigated. From our data, it cannot be determined whether the potassium concentration in muscle in people with large BMI values differs from that in people with small BMI values. Similarly, it would be important to know the potassium concentration in other soft tissues, since much of the radiation dose is due to beta radiation, in which the source and target tissues are the same. These uncertainties should be evaluated to determine their consequences for dosimetry.

Strom, Daniel J.; Lynch, Timothy P.; Weier, Dennis R.

2009-02-13T23:59:59.000Z

217

Natural Radioactivity of Boron Added Clay Samples  

SciTech Connect (OSTI)

Clay, consisting fine-grained minerals, is an interesting materials and can be used in a variety of different fields especially in dermatology application. Using clay such a field it is important to measure its natural radioactivity. Thus the purpose of this study is to measure {sup 226}Ra, {sup 232}Th and {sup 40}K concentration in clay samples enriched with boron. Three different types of clay samples were prepared where boron is used in different rate. The measurements have been determined using a gamma-ray spectrometry consists of a 3''x3'' NaI(Tl) detector. From the measured activity the radium equivalent activities (Ra{sub eq}), external hazard index (H{sub ex}), absorbed dose rate in air (D) and annual effective dose (AED) have also been obtained.

Akkurt, I.; Guenoglu, K. [Sueleyman Demirel University, Faculty of Arts and Sciences, Dept. of Physics, Isparta (Turkey); Canakcii, H. [Gaziantep University, Engineering Faculty, Civil Engineering Dept., Gaziantep (Turkey); Mavi, B. [Amasya University, Faculty of Arts and Sciences, Dept. of Physics, Amasya (Turkey)

2011-12-26T23:59:59.000Z

218

Monitoring the Reproductive Success of Naturally Spawning Hatchery and Natural Spring Chinook Salmon in the Wenatchee River, 2008-2009 Progress Report.  

SciTech Connect (OSTI)

We investigated differences in the statistical power to assign parentage between an artificially propagated and wild salmon population. The propagated fish were derived from the wild population, and are used to supplement its abundance. Levels of genetic variation were similar between the propagated and wild groups at 11 microsatellite loci, and exclusion probabilities were >0.999999 for both groups. The ability to unambiguously identify a pair of parents for each sampled progeny was much lower than expected, however. Simulations demonstrated that the proportion of cases the most likely pair of parents were the true parents was lower for propagated parents than for wild parents. There was a clear relationship between parentage assignment ability and the degree of linkage disequilibrium, the estimated effective number of breeders that produced the parents, and the size of the largest family within the potential parents. If a stringent threshold for parentage assignment was used, estimates of relative fitness were biased downward for the propagated fish. The bias appeared to be largely eliminated by either fractionally assigning progeny among parents in proportion to their likelihood of parentage, or by assigning progeny to the most likely set of parents without using a statistical threshold. We used a DNA-based parentage analysis to measure the relative reproductive success of hatchery- and natural-origin spring Chinook salmon in the natural environment. Both male and female hatchery-origin fish produced far fewer juvenile progeny per parent when spawning naturally than did natural origin fish. Differences in age structure, spawning location, weight and run timing were responsible for some of the difference in fitness. Male size and age had a large influence on fitness, with larger and older males producing more offspring than smaller or younger individuals. Female size had a significant effect on fitness, but the effect was much smaller than the effect of size on male fitness. For both sexes, run time had a smaller but still significant effect on fitness, with earlier returning fish favored. Spawning location within the river had a significant effect on fitness for both males and females, and for females explained most of the reduced fitness observed for hatchery fish in this population. While differences have been reported in the relative reproductive success of hatchery and naturally produced salmonids Oncorhynchus spp., factors explaining the differences are often confounded. We examined the spawning site habitat and redd structure variables of hatchery and naturally produced spring Chinook salmon O. tshawytscha of known size that spawned in two tributaries of the Wenatchee River. We controlled for variability in spawning habitat by limiting our analysis to redds found within four selected reaches. No difference in the instantaneous spawner density or location of the redd in the stream channel was detected between reaches. Within each reach, no difference in the fork length or weight of hatchery and naturally produced fish was detected. While most variables differed between reaches, we found no difference in redd characteristics within a reach between hatchery and naturally produced females. Correlation analysis of fish size and redd characteristics found several weak but significant relationships suggesting larger fish contract larger redds in deeper water. Spawner density was inversely related to several redd structure variables suggesting redd size may decrease as spawner density increases. Results should be considered preliminary until samples size and statistical power goals are reached in future years. Trends in relative reproductive success of hatchery and naturally produced spring Chinook salmon Oncorhynchus tshawytscha in the Wenatchee Basins suggest females that spawn in the upper reaches of the tributaries produced a great number of offspring compared to females that spawn in the lower reaches of the tributaries. To better understand this trend, redd microhabitat data was collected from spring Chinook sa

Ford, Michael J.; Williamson, Kevin S. [Northwest Fisheries Science Center

2009-05-28T23:59:59.000Z

219

Holographic imaging of natural-fiber-containing materials  

DOE Patents [OSTI]

The present invention includes methods and apparatuses for imaging material properties in natural-fiber-containing materials. In particular, the images can provide quantified measures of localized moisture content. Embodiments of the invention utilize an array of antennas and at least one transceiver to collect amplitude and phase data from radiation interacting with the natural-fiber-containing materials. The antennas and the transceivers are configured to transmit and receive electromagnetic radiation at one or more frequencies, which are between 50 MHz and 1 THz. A conveyance system passes the natural-fiber-containing materials through a field of view of the array of antennas. A computing device is configured to apply a synthetic imaging algorithm to construct a three-dimensional image of the natural-fiber-containing materials that provides a quantified measure of localized moisture content. The image and the quantified measure are both based on the amplitude data, the phase data, or both.

Bunch, Kyle J [Richland, WA; Tucker, Brian J [Pasco, WA; Severtsen, Ronald H [Richland, WA; Hall, Thomas E [Kennewick, WA; McMakin, Douglas L [Richland, WA; Lechelt, Wayne M [West Richland, WA; Griffin, Jeffrey W [Kennewick, WA; Sheen, David M [Richland, WA

2010-12-21T23:59:59.000Z

220

Development of Robust Analog and Mixed-Signal Circuits in the Presence of Process- Voltage-Temperature Variations  

E-Print Network [OSTI]

for transconductance amplifiers.................................7 I.2.2. Process variation-aware quantization ...........................................................8 I.2.3. Non-invasive on-chip measurement of thermal gradients and RF power.....9 I.2.4. Analog... .....................................................................................107 V. AN ON-CHIP TEMPERATURE SENSOR TO MEASURE RF POWER DISSIPATION AND THERMAL GRADIENTS.....................................................109 V.1. Background...

Onabajo, Marvin Olufemi

2012-07-16T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Wisconsin Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

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222

Wyoming Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

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223

Wyoming Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30NaturalThousandExtensions (Billion2008Sep-14 Oct-14Year (Million20082009

224

Wyoming Natural Gas Summary  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

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225

NETL: Natural Gas Resources  

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

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226

Iowa Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0Year

227

Kansas Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

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228

Kansas Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0ExtensionsYearSep-14 Oct-14 Nov-14

229

Kentucky Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15Industrial Consumers2009 2010 2011 2012

230

Kentucky Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15Industrial Consumers2009 2010 2011

231

Louisiana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

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232

Louisiana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342 3289 0 0FuelFuel2,208,9202009

233

Maine Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342CubicSep-14 Oct-14

234

Maryland Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade Year-0Thousand Cubic Feet)2009

235

Maryland Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade Year-0Thousand Cubic

236

Massachusetts Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade81 170Feet) (Millionper8.36

237

Michigan Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15 15 3Year Jan Feb2008 2009 20102009

238

Michigan Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15 15 3Year Jan Feb2008 2009

239

Minnesota Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15Thousand Cubic Feet) Decade5.68

240

Mississippi Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15Year Jan Feb (Million2008 2009 20102009

Note: This page contains sample records for the topic "measuring natural variations" 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

Mississippi Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15Year Jan Feb (Million2008 2009

242

Missouri Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15YearThousand Cubic Feet) Decade2009

243

Missouri Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15YearThousand Cubic Feet)

244

Montana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19343 369 384Fuel ConsumptionThousand

245

Montana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19343 369 384Fuel ConsumptionThousand5.02

246

Colorado Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 46 (Million Cubic2009 2010 2011 2012

247

Colorado Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 46 (Million Cubic2009 2010 2011

248

Connecticut Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42 (Million Cubic5.51 4.62 4.78

249

Delaware Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42Year (Million CubicThousand6.92

250

Florida Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 0 0 1979-2013Fuel2009 2010 2011 2012 2013

251

Florida Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 0 0 1979-2013Fuel2009 2010 2011 2012

252

Georgia Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.5 57.1 54.8IndustrialThousand

253

Hawaii Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.588,219Thousand Cubic Feet)

254

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade Year-0 Year-1 Year-2Thousand6 The

255

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade Year-0 Year-1 Year-2Thousand6 The7

256

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade Year-0 Year-1 Year-2Thousand6 The78

257

Idaho Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade (Million Cubic Feet)

258

Illinois Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0DecadeWithdrawals (MillionPlant2009 2010

259

Illinois Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0DecadeWithdrawals (MillionPlant2009

260

Illinois Natural Gas Summary  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0DecadeWithdrawalsDecade Year-0 Year-1Prices

Note: This page contains sample records for the topic "measuring natural variations" 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

Indiana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0 0WithdrawalsPlant

262

Indiana Natural Gas Prices  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0 0WithdrawalsPlantSep-14 Oct-14

263

Variational nodal transport methods with anisotropic scattering  

SciTech Connect (OSTI)

The variational nodal method is generalized to treat within-group and group-to-group anisotropic scattering in two- and three-dimensional eigenvalue and fixed source problems. The resulting formalism is implemented as the VARIational Anisotropic Nodal Transport code (VARIANT) within the shell of the Argonne National Laboratory production code DIF3D. The code is applied to a series of Cartesian and hexagonal geometry model problems and the accuracy of the results compared to those from TWODANT and TWOHEX and to the Monte Carlo code VIM, respectively, in two and three dimensions. VARIANT is then applied to multigroup hexagonal representations of the Experimental Breeder Reactor II, and results are obtained for three-dimensional eigenvalue and for two-dimensional neutron-gamma heating problems.

Palmiotti, G. (Commissariat a l'Energie Atomique, Saint-Paul-les-Durance (France)); Carrico, C.B. (Argonne National Lab., Argonne, IL (United States)); Lewis, E.E. (Northwestern Univ., Evanston, IL (United States). Dept. of Mechanical Engineering)

1993-11-01T23:59:59.000Z

264

Natural ventilation generates building form  

E-Print Network [OSTI]

Natural ventilation is an efficient design strategy for thermal comfort in hot and humid climates. The building forms can generate different pressures and temperatures to induce natural ventilation. This thesis develops a ...

Chen, Shaw-Bing

1996-01-01T23:59:59.000Z

265

Natural Gas Exports from Iran  

Reports and Publications (EIA)

This assessment of the natural gas sector in Iran, with a focus on Iran’s natural gas exports, was prepared pursuant to section 505 (a) of the Iran Threat Reduction and Syria Human Rights Act of 2012 (Public Law No: 112-158). As requested, it includes: (1) an assessment of exports of natural gas from Iran; (2) an identification of the countries that purchase the most natural gas from Iran; (3) an assessment of alternative supplies of natural gas available to those countries; (4) an assessment of the impact a reduction in exports of natural gas from Iran would have on global natural gas supplies and the price of natural gas, especially in countries identified under number (2); and (5) such other information as the Administrator considers appropriate.

2012-01-01T23:59:59.000Z

266

Composition variation and underdamped mechanics near membrane proteins and coats  

E-Print Network [OSTI]

We study the effect of membrane proteins on the shape, composition and thermodynamic stability of the surrounding membrane. When the coupling between membrane composition and curvature is strong enough the nearby composition and shape both undergo a transition from over-damped to under-damped spatial variation, well before the membrane becomes unstable in the bulk. This transition is associated with a change in the sign of the thermodynamic energy and hence has the unusual features that it can favour the early stages of coat assembly necessary for vesiculation (budding), while suppressing the activity of mechanosensitive membrane channels and transporters. Our results also suggest an approach to obtain physical parameters that are otherwise difficult to measure.

S. Alex Rautu; George Rowlands; Matthew S. Turner

2015-02-14T23:59:59.000Z

267

Ergodicity for Nonlinear Stochastic Equations in Variational Formulation  

SciTech Connect (OSTI)

This paper is concerned with nonlinear partial differential equations of the calculus of variation (see [13]) perturbed by noise. Well-posedness of the problem was proved by Pardoux in the seventies (see [14]), using monotonicity methods.The aim of the present work is to investigate the asymptotic behaviour of the corresponding transition semigroup P{sub t}. We show existence and, under suitable assumptions, uniqueness of an ergodic invariant measure {nu}. Moreover, we solve the Kolmogorov equation and prove the so-called 'identite du carre du champs'. This will be used to study the Sobolev space W{sup 1,2}(H,{nu}) and to obtain information on the domain of the infinitesimal generator of P{sub t}.

Barbu, Viorel [Faculty of Mathematics, University Al. I. Cuza, 6600 Iasi (Romania)], E-mail: barbu@uaic.ro; Da Prato, Giuseppe [Scuola Normale Superiore, 56126 Pisa (Italy)], E-mail: daprato@sns.it

2006-03-15T23:59:59.000Z

268

Natural gas monthly, June 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 24 tabs.

NONE

1997-06-01T23:59:59.000Z

269

Natural gas monthly, November 1993  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground state data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

Not Available

1993-11-29T23:59:59.000Z

270

Natural Resource Management Plan Update  

E-Print Network [OSTI]

wood industry, some farming in area of Solar Farm 3 #12;History of Natural Resource Management Formal

Homes, Christopher C.

271

Natural gas monthly: December 1993  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. Articles are included which are designed to assist readers in using and interpreting natural gas information.

Not Available

1993-12-01T23:59:59.000Z

272

Natural gas monthly, June 1999  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 25 tabs.

NONE

1999-06-01T23:59:59.000Z

273

Natural gas monthly, July 1998  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 25 tabs.

NONE

1998-07-01T23:59:59.000Z

274

Natural gas monthly, April 1995  

SciTech Connect (OSTI)

The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 31 tabs.

NONE

1995-04-27T23:59:59.000Z

275

Natural gas monthly, October 1998  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

NONE

1998-10-01T23:59:59.000Z

276

Natural Gas Monthly, March 1996  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

NONE

1996-03-25T23:59:59.000Z

277

Natural gas monthly, June 1998  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

NONE

1998-06-01T23:59:59.000Z

278

Natural gas monthly, May 1999  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

NONE

1999-05-01T23:59:59.000Z

279

Early universe constraints on time variation of fundamental constants  

SciTech Connect (OSTI)

We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant {alpha} and the Higgs vacuum expectation value without assuming any theoretical framework. A variation in leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of {alpha} and the electron mass m{sub e}. In a purely phenomenological fashion, we derive a relationship between both variations.

Landau, Susana J.; Mosquera, Mercedes E.; Scoccola, Claudia G.; Vucetich, Hector [Departamento de Fisica, FCEyN, Universidad de Buenos Aires, Ciudad Universitaria-Pabellon 1, 1428 Buenos Aires (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina); and Instituto de Astrofisica, Paseo del Bosque S/N 1900 La Plata (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina)

2008-10-15T23:59:59.000Z

280

X-RAY ESCAPE PEAK VARIATIONS IN DIODES MADE FROM DOUBLY TRAVELLING SOLVENT GROWN p-TYPE CdTe  

E-Print Network [OSTI]

293 X-RAY ESCAPE PEAK VARIATIONS IN DIODES MADE FROM DOUBLY TRAVELLING SOLVENT GROWN p-TYPE CdTe H On a étudié la variation de l'intensité du pic d'échappement d'un compteur CdTe en fonction de la tension de height on the applied diode voltage was measured at diodes made from doubly travelling solvent grown CdTe

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "measuring natural variations" 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

Grain shape variation and sedimentary processes of the Neogene-Quaternary sediments in Baffin Bay and Labrador Sea  

E-Print Network [OSTI]

fractured and overgrown grains. Fractured grains con- tribute to higher harnionic amplitudes of Fourier grain shape measurement; rounded grains contribute to lower harmonic amplitudes of Fourier grain shape iueasurement. The variation in the average grain... shape harmonic aiuplitudes reflects the variation of the three grain types. This varia. tion of fractured grains anil rounded grains are controlled by different sedinientary dynamics iuid(or) different sediiuent sources. 'The southward-directed flow...

Shan, Yongtang

1989-01-01T23:59:59.000Z

282

wind engineering & natural disaster mitigation  

E-Print Network [OSTI]

wind engineering & natural disaster mitigation #12;wind engineering & natural disaster mitigation Investment WindEEE Dome at Advanced Manufacturing Park $31million Insurance Research Lab for Better Homes $8million Advanced Facility for Avian Research $9million #12;wind engineering & natural disaster mitigation

Denham, Graham

283

LIQUEFIED NATURAL GAS IN CALIFORNIA  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION LIQUEFIED NATURAL GAS IN CALIFORNIA: HISTORY, RISKS, AND SITING Tyler Contributors Dave Maul Manager NATURAL GAS & SPECIAL PROJECTS OFFICE Terrence O'Brien, Deputy Commissioner and Leader of the Governor's Natural Gas Working Group #12;This paper was prepared as the result

284

warnell school Forestry & Natural Resources  

E-Print Network [OSTI]

warnell school Forestry & Natural Resources 2010 Annual Report o #12;VisionTo be recognized as one of the top five forestry and natural resource programs in the United States. MissionTo prepare resources; and to place latest ideas and technology in forestry and natural resource management into real

Hall, Daniel

285

Natural gas monthly, January 1999  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 28 tabs.

NONE

1999-02-01T23:59:59.000Z

286

NATIONAL MUSEUM OF NATURAL HISTORY  

E-Print Network [OSTI]

NATIONAL MUSEUM OF NATURAL HISTORY Annual Report 2004 #12;2 NATIONAL MUSEUM OF NATURAL HISTORY · www.mnh.si.edu The revitalization of the National Museum of Natural History proceeded at a rapid pace, innovation and solid groundwork for future growth. The Museum's agenda is an active one. As with any

Mathis, Wayne N.

287

Field Museum of Natural History  

E-Print Network [OSTI]

Field Museum of Natural History Financial Statements as of and for the Years Ended December 31' Report #12;FIELD MUSEUM OF NATURAL HISTORY TABLE OF CONTENTS Page INDEPENDENT AUDITORS' REPORT 1 AUDITORS' REPORT To the Board of Trustees of Field Museum of Natural History: We have audited

Patterson, Bruce D.

288

Field Museum of Natural History  

E-Print Network [OSTI]

Field Museum of Natural History Financial Statements as of and for the Years Ended December 31 Auditors' Report #12;FIELD MUSEUM OF NATURAL HISTORY TABLE OF CONTENTS Page INDEPENDENT AUDITORS' REPORT 1 Expenditures 22­23 #12;INDEPENDENT AUDITORS' REPORT To the Board of Trustees of Field Museum of Natural History

Patterson, Bruce D.

289

Natural gas monthly, November 1998  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 27 tabs.

NONE

1998-11-01T23:59:59.000Z

290

Natural gas monthly, February 1999  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 6 figs., 28 tabs.

NONE

1999-02-01T23:59:59.000Z

291

Top quark physics: Future Measurements  

SciTech Connect (OSTI)

We discuss the study of the top quark at future experiments and machines. Top's large mass makes it a unique probe of physics at the natural electroweak scale. We emphasize measurements of the top quark's mass, width, and couplings, as well as searches for rare or nonstandard decays, and discuss the complementary roles played by hadron and lepton colliders.

Frey, Raymond; Gerdes, David; Jaros, John; Vejcik, Steve; Berger, Edmond L.; Chivukula, R. Sekhar; Cuypers, Frank; Drell, Persis S.; Fero, Michael; Hadley, Nicholas; Han, Tao; Heinson, Ann P.; Knuteson, Bruce; Larios, Francisco; Miettinen, Hannu; Orr, Lynne H.; Peskin, Michael E.; Rizzo, Thomas; Sarid, Uri; Schmidt, Carl; Stelzer, Tim; Sullivan, Zack

1996-12-31T23:59:59.000Z

292

Top quark physics: Future measurements  

SciTech Connect (OSTI)

The authors discuss the study of the top quark at future experiments and machines. Top`s large mass makes it a unique probe of physics at the natural electroweak scale. They emphasize measurements of the top quark`s mass, width, and couplings, as well as searches for rare or nonstandard decays, and discuss the complementary roles played by hadron and lepton colliders.

Frey, R. [Univ. of Oregon, Eugene, OR (United States). Dept. of Physics; Vejcik, S. [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics; Berger, E.L. [Argonne National Lab., IL (United States)] [and others

1997-04-04T23:59:59.000Z

293

Optical Quadratic Measure Eigenmodes  

E-Print Network [OSTI]

We report a mathematically rigorous technique which facilitates the optimization of various optical properties of electromagnetic fields. The technique exploits the linearity of electromagnetic fields along with the quadratic nature of their interaction with matter. In this manner we may decompose the respective fields into optical quadratic measure eigenmodes (QME). Key applications include the optimization of the size of a focused spot, the transmission through photonic devices, and the structured illumination of photonic and plasmonic structures. We verify the validity of the QME approach through a particular experimental realization where the size of a focused optical field is minimized using a superposition of Bessel beams.

Michael Mazilu; Joerg Baumgartl; Sebastian Kosmeier; Kishan Dholakia

2010-07-13T23:59:59.000Z

294

Natural Gas Monthly, October 1993  

SciTech Connect (OSTI)

The (NGM) Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. This month`s feature articles are: US Production of Natural Gas from Tight Reservoirs: and Expanding Rule of Underground Storage.

Not Available

1993-11-10T23:59:59.000Z

295

Natural gas monthly, April 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are present3ed each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article is entitled ``Natural gas pipeline and system expansions.`` 6 figs., 27 tabs.

NONE

1997-04-01T23:59:59.000Z

296

Natural gas monthly, July 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article this month is entitled ``Intricate puzzle of oil and gas reserves growth.`` A special report is included on revisions to monthly natural gas data. 6 figs., 24 tabs.

NONE

1997-07-01T23:59:59.000Z

297

Natural gas monthly, December 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The article this month is entitled ``Recent Trends in Natural Gas Spot Prices.`` 6 figs., 27 tabs.

NONE

1997-12-01T23:59:59.000Z

298

Heat distribution by natural convection  

SciTech Connect (OSTI)

Natural convection can provide adequate heat distribution in many situtations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others or to reduce the number of heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures is predictable and can be accounted for in the design. The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Natural convective loops that can occur in buildings are described and a few design guidelines are presented.

Balcomb, J.D.

1985-01-01T23:59:59.000Z

299

Natural gas monthly, October 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article in this issue is a special report, ``Comparison of Natural Gas Storage Estimates from the EIA and AGA.`` 6 figs., 26 tabs.

NONE

1997-10-01T23:59:59.000Z

300

Natural gas monthly, May 1997  

SciTech Connect (OSTI)

The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article this month is ``Restructuring energy industries: Lessons from natural gas.`` 6 figs., 26 tabs.

NONE

1997-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Natural gas monthly, October 1996  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), U.S. Department of Energy (DOE). The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

NONE

1996-10-01T23:59:59.000Z

302

Natural gas monthly, June 1996  

SciTech Connect (OSTI)

The natural gas monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The feature article for this month is Natural Gas Industry Restructuring and EIA Data Collection.

NONE

1996-06-24T23:59:59.000Z

303

MEASURING GASEOUS EMISSIONS FROM STORED PIG SLURRY S. Espagnol1  

E-Print Network [OSTI]

2 MEASURING GASEOUS EMISSIONS FROM STORED PIG SLURRY S. Espagnol1 , L. Loyon2 , F. Guiziou2 , P to measure emissions factors of ammonia (NH3), nitrous oxide (N2O) methane (CH4) and carbon dioxide (CO2) from stored pig slurry and measured the variations of the emissions in time and space. In 2006, dynamic

Boyer, Edmond

304

VARIATIONS OF TRICHOMES IN FAMILY ACANTHACEAE W.S.R. TO KALMEGH – A MICROMORPHOLOGICAL AND MICROMETRIC STUDY  

E-Print Network [OSTI]

All taxonomists are familiar with diversity of external hairs. Whole families may frequently be recognised by the occurrence of one or more distinctive types of hair. In other cases, species and genera can also be recognised on the basis of structure of hair. Smaller variations in size and density should be treated as a basis for the separation of closely related genera and species only after exhaustive investigation of wide range of material. The present study is undertaken with 7 species of the family to establish the nature, type and it variations. Kalmegha shows multicellular warty trichomes, glandular multicellular sessile trichomes; in Vasa multicellular simple and sessile multicellular head sessile trichomes was observed.

Pharmaceutical Sciences; Switu Jani; Harisha C. R; Bhupesh R. Patel; Trichomes Sessile; Switu Jani; Dravyaguna Department

305

letters to nature NATURE |VOL 404 |2 MARCH 2000 |www.nature.com 69  

E-Print Network [OSTI]

and the effects nonprecipitating clouds have on aerosol size distribution. J. Geophys. Res. 99, 14443±14459 (1994 determining their size distribution. J. Geophys. Res. 102, 21315±21328 (1997). 8. Hoppel, W. A., Frick, G. Mletters to nature NATURE |VOL 404 |2 MARCH 2000 |www.nature.com 69 subsequent self-coagulation

Larson, Kristine

306

Statistical static timing analysis considering process variations and crosstalk  

E-Print Network [OSTI]

Increasing relative semiconductor process variations are making the prediction of realistic worst-case integrated circuit delay or sign-off yield more difficult. As process geometries shrink, intra-die variations have become dominant...

Veluswami, Senthilkumar

2005-11-01T23:59:59.000Z

307

Original article Belowground biomass seasonal variation in two  

E-Print Network [OSTI]

Original article Belowground biomass seasonal variation in two Neotropical savannahs (Brazilian March 2001) Abstract ­ The belowground biomass of two types of ecosystems, frequently burned open by flotation and sieving. Belowground biomass showed significant seasonal variation, values being higher during

Paris-Sud XI, Université de

308

Natural gas monthly, April 1998  

SciTech Connect (OSTI)

This issue of the Natural Gas Monthly presents the most recent estimates of natural gas data from the Energy Information Administration (EIA). Estimates extend through April 1998 for many data series. The report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, feature articles are presented designed to assist readers in using and interpreting natural gas information. This issue contains the special report, ``Natural Gas 1997: A Preliminary Summary.`` This report provides information on natural gas supply and disposition for the year 1997, based on monthly data through December from EIA surveys. 6 figs., 28 tabs.

NONE

1998-04-01T23:59:59.000Z

309

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch RelatedcontentcharacteristicsMeasurements RelatedMeasurements

310

X-ray and Optical Variations in the Classical Be Star gamma Cas  

E-Print Network [OSTI]

gamma Cas (B0.5e) is known to be a unique X-ray source because ot its moderate L_x, hard X-ray spectrum, and light curve punctuated by ubiquitous flares and slow undulations. Its X-ray peculiarities have led to a controversy concerning their origin: either from wind infall onto a putative degenerate companion, as for typical Be/X-ray binaries, or from the Be star per se. Recent progress has been made to address this: (1) the discovery that gamma Cas is an eccentric binary system (P = 203.59 d) with unknown secondary type, (2) the accumulation of RXTE data at 9 epochs in 1996-2000, and (3) the collation of robotic telescope B, V-band photometric observations over 4 seasons. The latter show a 3%, cyclical flux variation with cycle lengths 55-93 days. We find that X-ray fluxes at all 9 epochs show random variations with orbital phase. This contradicts the binary accretion model, which predicts a substantial modulation. However,these fluxes correlate well with the cyclical optical variations. Also, the 6 flux measurements in 2000 closely track the interpolated optical variations between the 2000 and 2001 observing seasons. Since the optical variations represent a far greater energy than that emitted as X-rays, the optical variability cannot arise from X-ray reprocessing. However, the strong correlation between the two suggests that they are driven by a common mechanism. We propose that this mechanism is a cyclical magnetic dynamo excited by a Balbus-Hawley instability located within the inner part of the circumstellar disk. In our model, variations in the field strength directly produce the changes in the magnetically related X-ray activity. Turbulence associated with the dynamo results in changes to the density distribution within the disk and creates the observed optical variations.

Richard D. Robinson; Myron A. Smith; Gregory W. Henry

2002-05-16T23:59:59.000Z

311

An experimental and theoretical study of the ice accretion process during artificial and natural icing conditions  

E-Print Network [OSTI]

Real-time measurements of ice growth during artificial and natural icing conditions were conducted using an ultrasonic pulse-echo technique. This technique allows ice thickness to be measured with an accuracy of ?0.5 mm; ...

Kirby, Mark Samuel

1986-01-01T23:59:59.000Z

312

Resilience-Based design of Natural Gas Pipelines G. P. Cimellaro, O. Villa  

E-Print Network [OSTI]

Resilience-Based design of Natural Gas Pipelines G. P. Cimellaro, O. Villa Department of Structural systems. No models are available in literature to measure the performance of natural gas network of natural or manmade hazard which might lead to the disruption of the system. The gas distribution network

Bruneau, Michel

313

Do Private Firms Invest Dierently than Public Firms? Taking Cues from the Natural Gas Industry  

E-Print Network [OSTI]

Do Private Firms Invest Dierently than Public Firms? Taking Cues from the Natural Gas Industry Erik and public rms using a unique dataset of onshore U.S. natural gas producers. In rm-level regressions we nd that investments by private rms are 68% less responsive to changes in natural gas prices, a measure that captures

Lin, Xiaodong

314

Seismometer using a vertical long natural-period rotational pendulum with magnetic levitation  

SciTech Connect (OSTI)

We have demonstrated a highly sensitive/wideband vertical-component seismometer using an astatic rotational pendulum to obtain a long natural period. This seismometer employs magnetic levitation for removing any parasitic resonances of a spring to support a weight due to gravity and the thermal dependence of the spring constant. The pendulum has a cylindrical plunger-type permanent magnet that has a weight at one side of its end edge. The plunger magnet is inserted into a uniform magnetic field generated by a window-frame-type permanent magnet, and attached to two crossed-leaf spring hinges as a rotational axis outside of the bore of the magnet. Magnetic forces applied to the plunger magnet counterbalance the gravitational force at the weight. To realize stable operation of the rotational pendulum without any unnecessary movements of the plunger magnet, a tilt of lines of the magnetic force in the bore of the window-frame magnet was compensated by a tilted magnetic-pole surface near to its opening. The field uniformity reached 10{sup -4} owing to this compensation. The thermal dependence of a magnetic field strength of about 10{sup -3}/K was also compensated by as much as 9x10{sup -5}/K by Ni-Fe metal having a negative permeability coefficient. The metal was attached along the sidewalls of the window-frame magnet. To determine the feedback control parameters for a feedback control seismometer, the natural period of a prototype rotational pendulum was measured. It was more than 8 s, and was able to be changed from 5 to 8 s by using an additional magnetic spring, similar to the voice coil actuator of a speaker. This change was in accordance with theoretical calculations, and showed that the pendulum movement did not include a big nonlinearity caused by the tilt of the lines of the magnetic force. No parasitic resonances were found during experiments. A velocity feedback-control circuit and a capacitance position detector to measure the weight position were applied to the rotational pendulum for building a feedback control seismometer. Observations showed that the noise level of the seismometer was less than about 10{sup -8} m/s at 1 Hz. This fruitful value is close to the specifications of the most sensitive seismometer, such as STS-I. However, low-frequency noise of about 10{sup -7} m/s, caused by a buoyancy change at the pendulum weight arising from atmospheric pressure variation, could be recognized. To decrease the noise, a vacuum chamber to isolate the atmospheric pressure variation should be employed in the next step of the study.

Otake, Yuji; Araya, Akito; Hidano, Kazuo [ERI, Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032 (Japan)

2005-05-15T23:59:59.000Z

315

TECHNOLOGIES TO ENHANCE THE OPERATION OF EXISTING NATURAL GAS COMPRESSION INFRASTRUCTURE  

SciTech Connect (OSTI)

This project has documented and demonstrated the feasibility of technologies and operational choices for companies who operate the large installed fleet of integral engine compressors in pipeline service. Continued operations of this fleet is required to meet the projected growth of the U.S. gas market. Applying project results will meet the goals of the DOE-NETL Natural Gas Infrastructure program to enhance integrity, extend life, improve efficiency, and increase capacity, while managing NOx emissions. These benefits will translate into lower cost, more reliable gas transmission, and options for increasing deliverability from the existing infrastructure on high demand days. The power cylinders on large bore slow-speed integral engine/compressors do not in general combust equally. Variations in cylinder pressure between power cylinders occur cycle-to-cycle. These variations affect both individual cylinder performance and unit average performance. The magnitude of the variations in power cylinder combustion is dependent on a variety of parameters, including air/fuel ratio. Large variations in cylinder performance and peak firing pressure can lead to detonation and misfires, both of which can be damaging to the unit. Reducing the variation in combustion pressure, and moving the high and low performing cylinders closer to the mean is the goal of engine balancing. The benefit of improving the state of the engine ''balance'' is a small reduction in heat rate and a significant reduction in both crankshaft strain and emissions. A new method invented during the course of this project is combustion pressure ratio (CPR) balancing. This method is more effective than current methods because it naturally accounts for differences in compression pressure, which results from cylinder-to-cylinder differences in the amount of air flowing through the inlet ports and trapped at port closure. It also helps avoid compensation for low compression pressure by the addition of excess fuel to achieve equalizing peak firing pressure, even if some of the compression pressure differences are attributed to differences in cylinder and piston geometry, clearance, and kinematics. The combination of high-pressure fuel injection and turbocharging should produce better mixing of fuel and air in lean mixtures. Test results documented modest improvements in heat rate and efficiency and significant improvements in emissions. The feasibility of a closed-loop control of waste-gate setting, which will maintain an equivalence ratio set point, has been demonstrated. This capability allows more direct tuning to enhance combustion stability, heat rate, or emissions. The project has documented the strong dependence of heat rate on load. The feasibility of directly measuring power and torque using the GMRC Rod Load Monitor (RLM) has been demonstrated. This capability helps to optimize heat rate while avoiding overload. The crankshaft Strain Data Capture Module (SDCM) has shown the sensitivity to changes in operating conditions and how they influence crankshaft bending strain. The results indicate that: balancing reduces the frequency of high-strain excursions, advanced timing directly increases crankshaft dynamic strain, reduced speed directly reduces strain, and high-pressure fuel injection reduces crankshaft strain slightly. The project demonstrated that when the timing is advanced, the heat rate is reduced, and when the timing is retarded, the heat rate is increased. One reason why timing is not advanced as much as it might be is the potential for detonation on hot days. A low-cost knock detector was demonstrated that allowed active control to use timing to allow the heat rate benefit to be realized safely. High flow resistance losses in the pulsation control systems installed on some compressors have been shown to hurt efficiency of both compressor and engine/compressor system. Improved pulsation control systems have the potential to recover almost 10% of available engine power. Integrity enhancements and reduced component failure probability will enhance aggregate

Anthony J. Smalley; Ralph E. Harris; Gary D. Bourn; Ford A. Phillips; Danny M. Deffenbaugh

2006-05-31T23:59:59.000Z

316

Variational thermodynamics of relativistic thin disks  

E-Print Network [OSTI]

We present a relativistic model describing a thin disk system composed of two fluids. The system is surrounded by a halo in the presence of a non-trivial electromagnetic field. We show that the model is compatible with the variational multi-fluid thermodynamics formalism, allowing us to determine all the thermodynamic variables associated with the matter content of the disk. The asymptotic behaviour of these quantities indicates that the single fluid interpretation should be abandoned in favour of a two-fluid model.

A C Gutiérrez-Pińeres; C S Lopez-Monsalvo; H Quevedo

2014-08-18T23:59:59.000Z

317

Variational Iteration Method for Image Restoration  

E-Print Network [OSTI]

The famous Perona-Malik (P-M) equation which was at first introduced for image restoration has been solved via various numerical methods. In this paper we will solve it for the first time via applying a new numerical method called the Variational Iteration Method (VIM) and the correspondent approximated solutions will be obtained for the P-M equation with regards to relevant error analysis. Through implementation of our algorithm we will access some effective results which are deserved to be considered as worthy as the other solutions issued by the other methods.

Yahya, Keyvan; Azari, Hossein; Fard, Pouyan Rafiei

2010-01-01T23:59:59.000Z

318

Complexified cones. Spectral gaps and variational principles  

E-Print Network [OSTI]

We consider contractions of complexified real cones, as recently introduced by Rugh in [Rugh10]. Dubois [Dub09] gave optimal conditions to determine if a matrix contracts a canonical complex cone. First we generalize his results to the case of complex operators on a Banach space and give precise conditions for the contraction and an improved estimate of the size of the associated spectral gap. We then prove a variational formula for the leading eigenvalue similar to the Collatz-Wielandt formula for a real cone contraction. Morally, both cases boil down to the study of suitable collections of 2 by 2 matrices and their contraction properties on the Riemann sphere.

Dubois, Loďc

2010-01-01T23:59:59.000Z

319

VARIATIONS IN THE SOLAR NEUTRINO FZUX  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500II Field EmissionFunctionalPortalV > 1114 VARIATIONS IN

320

Individual variation in cooperative behaviour in meerkats  

E-Print Network [OSTI]

on the behaviour partly because of this benefit (West et al., 2007). Darwin (1859) identified cooperation in the form of sterile workers in social insects as representing ‘one special diffi culty’ posed to his theory of evolution by natural selection (p. 236...

English, Sinéad

2010-04-13T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Importance of Low Permeability Natural Gas Reservoirs (released in AEO2010)  

Reports and Publications (EIA)

Production from low-permeability reservoirs, including shale gas and tight gas, has become a major source of domestic natural gas supply. In 2008, low-permeability reservoirs accounted for about 40% of natural gas production and about 35% of natural gas consumption in the United States. Permeability is a measure of the rate at which liquids and gases can move through rock. Low-permeability natural gas reservoirs encompass the shale, sandstone, and carbonate formations whose natural permeability is roughly 0.1 millidarcies or below. (Permeability is measured in darcies.)

2010-01-01T23:59:59.000Z

322

Hollywood 3D: Recognizing Actions in 3D Natural Scenes Simon Hadfield Richard Bowden  

E-Print Network [OSTI]

Hollywood 3D: Recognizing Actions in 3D Natural Scenes Simon Hadfield Richard Bowden Centre-class variations. It is made even more challenging when complex 3D actions are projected down to the image plane, losing a great deal of information. The recent emergence of 3D data, both in broadcast content

Bowden, Richard

323

Abstract--The variability and non-dispatchable nature of wind and solar energy production presents  

E-Print Network [OSTI]

1 Abstract--The variability and non-dispatchable nature of wind and solar energy production needed for a variety of energy storage applications can be found in [6]. Wind and solar power variations, energy storage can be a viable solution to balance energy production against its consumption. This paper

324

Natural Gas Reforming | Department of Energy  

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

Hydrogen Production Natural Gas Reforming Natural Gas Reforming Photo of Petroleum Refinery Natural gas reforming is an advanced and mature production process that builds upon...

325

Natural Gas and Hydrogen Infrastructure Opportunities Workshop...  

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

Natural Gas and Hydrogen Infrastructure Opportunities Workshop Agenda Natural Gas and Hydrogen Infrastructure Opportunities Workshop Agenda Agenda for the Natural Gas and Hydrogen...

326

Report: Natural Gas Infrastructure Implications of Increased...  

Energy Savers [EERE]

interstate natural gas pipeline transmission system across a range of future natural gas demand scenarios that drive increased electric power sector natural gas use. To perform...

327

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation InExplosionAnnouncementsgovMeasurements Measurement Categories Select below

328

Measuring Radiation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMapping the Nanoscale LandscapeImportsBG4,Measurements ofMeasurement

329

Accepted to the Journal Geophysical Research Laboratory measurements of electrical  

E-Print Network [OSTI]

1 Accepted to the Journal Geophysical Research Laboratory measurements of electrical conductivities measurements of electrical conductivities of natural magma compositions. The electrical conductivities of three. The electrical conductivity increases with temperature and is higher in the order tephrite, phonotephrite

Paris-Sud XI, Université de

330

Heat distribution by natural convection  

SciTech Connect (OSTI)

Natural convection can provide adequate heat distribution in many situations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others. Natural convection can also be used to reduce the number of auxiliary heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures are predictable and can be accounted for in the design. The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Experimental results are summarized based on the monitoring of 15 passive solar buildings which employ a wide variety of geometrical configurations including natural convective loops.

Balcomb, J.D.

1985-01-01T23:59:59.000Z

331

Natural gas monthly, March 1998  

SciTech Connect (OSTI)

The March 1998 edition of the Natural Gas Monthly highlights activities, events, and analyses associated with the natural gas industry. Volume and price data are presented for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. This report also features an article on the correction of errors in the drilling activity estimates series, and in-depth drilling activity data. 6 figs., 28 tabs.

NONE

1998-03-01T23:59:59.000Z

332

Natural gas monthly, May 1995  

SciTech Connect (OSTI)

The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information.

NONE

1995-05-24T23:59:59.000Z

333

Natural gas monthly, September 1998  

SciTech Connect (OSTI)

The National Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. 6 figs., 27 tabs.

NONE

1998-09-01T23:59:59.000Z

334

,"New Mexico Natural Gas Prices"  

U.S. Energy Information Administration (EIA) Indexed Site

,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New Mexico Natural Gas Prices",8,"Monthly","12015","1151989" ,"Release Date:","331...

335

,"New York Natural Gas Prices"  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New York Natural Gas Prices",8,"Monthly","102014","1151989" ,"Release Date:","12312014"...

336

on man, nature & air pollution  

E-Print Network [OSTI]

on man, nature & air pollution About three decades ago, itand episodes of air pollution the following summer. Wetthe increase in air pollution. This hypothesis generated

Finlayson-Pitts, Barbara J

2008-01-01T23:59:59.000Z

337

Natural Gas Pipeline Utilities (Maine)  

Broader source: Energy.gov [DOE]

These regulations apply to entities seeking to develop and operate natural gas pipelines and provide construction requirements for such pipelines. The regulations describe the authority of the...

338

Natural gas ferries in Norway.  

E-Print Network [OSTI]

??This paper studies the emergence of natural gas powered ferries in Norway and their diffusion as a means to reaching the goals of reducing NOx… (more)

Myklebust, Benjamin

2006-01-01T23:59:59.000Z

339

Natural Gas Pipeline Safety (Kansas)  

Broader source: Energy.gov [DOE]

This article states minimum safety standards for the transportation of natural gas by pipeline and reporting requirements for operators of pipelines.

340

The Venezuelan natural gas industry  

SciTech Connect (OSTI)

Venezuela's consumption energy of comes from three primary sources: hydroelectricity, liquid hydrocarbons and natural gas. In 1986, the energy consumption in the internal market was 95.5 thousand cubic meters per day of oil equivalent, of which 32% was natural gas, 46% liquid hydrocarbons and 22% hydroelectricity. The Venezuelan energy policy established natural gas usage after hydroelectricity, as a substitute of liquid hydrocarbons, in order to increase exports of these. This policy permits a solid development of the natural gas industry, which is covered in this paper.

Silva, P.V.; Hernandez, N.

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Scientific and Natural Areas (Minnesota)  

Broader source: Energy.gov [DOE]

Certain scientific and natural areas are established throughout the state for the purpose of preservation and protection. Construction and new development is prohibited in these areas.

342

Natural gas monthly, August 1997  

SciTech Connect (OSTI)

This report presents information on natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported.

NONE

1997-08-01T23:59:59.000Z

343

Competitive Natural Gas Providers (Iowa)  

Broader source: Energy.gov [DOE]

Competitive providers and aggregators of natural gas must be certified by the Utilities Board. Applicants must demonstrate the managerial, technical, and financial capability to perform the...

344

Spatial variation of dosimetric leaf gap and its impact on dose delivery  

SciTech Connect (OSTI)

Purpose: During dose calculation, the Eclipse treatment planning system (TPS) retracts the multileaf collimator (MLC) leaf positions by half of the dosimetric leaf gap (DLG) value (measured at central axis) for all leaf positions in a dynamic MLC plan to accurately model the rounded leaf ends. The aim of this study is to map the variation of DLG along the travel path of each MLC leaf pair and quantify how this variation impacts delivered dose. Methods: 6 MV DLG values were measured for all MLC leaf pairs in increments of 1.0 cm (from the line intersecting the CAX and perpendicular to MLC motion) to 13.0 cm off axis distance at dmax. The measurements were performed on two Varian linear accelerators, both employing the Millennium 120-leaf MLCs. The measurements were performed at several locations in the beam with both a Sun Nuclear MapCHECK device and a PTW pinpoint ion chamber. Results: The measured DLGs for the middle 40 MLC leaf pairs (each 0.5 cm width) at positions along a line through the CAX and perpendicular to MLC leaf travel direction were very similar, varying maximally by only 0.2 mm. The outer 20 MLC leaf pairs (each 1.0 cm width) have much lower DLG values, about 0.3–0.5 mm lower than the central MLC leaf pair, at their respective central line position. Overall, the mean and the maximum variation between the 0.5 cm width leaves and the 1.0 cm width leaf pairs are 0.32 and 0.65 mm, respectively. Conclusions: The spatial variation in DLG is caused by the variation of intraleaf transmission through MLC leaves. Fluences centered on the CAX would not be affected since DLG does not vary; but any fluences residing significantly off axis with narrow sweeping leaves may exhibit significant dose differences. This is due to the fact that there are differences in DLG between the true DLG exhibited by the 1.0 cm width outer leaves and the constant DLG value utilized by the TPS for dose calculation. Since there are large differences in DLG between the 0.5 cm width leaf pairs and 1.0 cm width leaf pairs, there is a need to correct the TPS plans, especially those with high modulation (narrow dynamic MLC gap), with 2D variation of DLG.

Kumaraswamy, Lalith K., E-mail: Lalith.Kumaraswamy@roswellpark.org [Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 and Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Schmitt, Jonathan D. [Department of Radiation Medicine, RadAmerica, LLC-MedStar Health, Baltimore, Maryland 21237 (United States); Bailey, Daniel W. [Department of Radiation Oncology, Northside Hospital, Atlanta, Georgia 30342 (United States); Xu, Zheng Zheng [Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 and Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14260 (United States); Podgorsak, Matthew B. [Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, New York 14263 (United States); Department of Physiology and Biophysics, State University of New York at Buffalo, Buffalo, New York 14260 (United States)

2014-11-01T23:59:59.000Z

345

Properties of Natural Radiation and Radioactivity  

SciTech Connect (OSTI)

Ubiquitous natural sources of radiation and radioactive material (naturally occurring radioactive material, NORM) have exposed humans throughout history. To these natural sources have been added technologically-enhanced naturally occurring radioactive material (TENORM) sources and human-made (anthropogenic) sources. This chapter describes the ubiquitous radiation sources that we call background, including primordial radionuclides such as 40K, 87Rb, the 232Th series, the 238U series, and the 235U series; cosmogenic radionuclides such as 3H and 14C; anthropogenic radionuclides such as 3H, 14C, 137Cs, 90Sr, and 129I; radiation from space; and radiation from technologically-enhanced concentrations of natural radionuclides, particularly the short-lived decay products of 222Rn ("radon") and 220Rn ("thoron") in indoor air. These sources produce radiation doses to people principally via external irradiation or internal irradiation following intakes by inhalation or ingestion. The effective doses from each are given, with a total of 3.11 mSv y-1 (311 mrem y-1) to the average US resident. Over 2.5 million US residents receive over 20 mSv y-1 (2 rem y-1), primarily due to indoor radon. Exposure to radiation from NORM and TENORM produces the largest fraction of ubiquitous background exposure to US residents, on the order of 2.78 mSv (278 mrem) or about 89%. This is roughly 45% of the average annual effective dose to a US resident of 6.2 mSv y-1 (620 mrem y-1) that includes medical (48%), consumer products and air travel (2%), and occupational and industrial (0.1%). Much of this chapter is based on National Council on Radiation Protection and Measurements (NCRP) Report No. 160, "Ionizing Radiation Exposure of the Population of the United States," for which the author chaired the subcommittee that wrote Chapter 3 on "Ubiquitous Background Radiation."

Strom, Daniel J.

2009-07-13T23:59:59.000Z

346

NATURAL GAS STORAGE ENGINEERING Kashy Aminian  

E-Print Network [OSTI]

NATURAL GAS STORAGE ENGINEERING Kashy Aminian Petroleum & Natural Gas Engineering, West Virginia University, Morgantown, WV, USA. Shahab D. Mohaghegh Petroleum & Natural Gas Engineering, West Virginia University, Morgantown, WV, USA. Keywords: Gas Storage, Natural Gas, Storage, Deliverability, Inventory

Mohaghegh, Shahab

347

Montana Natural Areas Act of 1974 (Montana)  

Broader source: Energy.gov [DOE]

The Montana Natural Areas Act of 1974 provides for the designation and establishment of a system of natural areas in order to preserve the natural ecosystems of these areas. Designated natural...

348

A modified variational approach to scattering  

E-Print Network [OSTI]

Subject: Physics A MODIFIED VARIATIOiNAL APPROACH TO SCATTERING A Thesis by GREGORY ELLIOTT PARNELL Approved as to sty1 e and content by: Chairman o Committee Head of O p Hc, . . o~e Mem er Member December 1978 ABSTRACT A Modified Variational...~i)l'l'&='(ALP@*&~ulV&](2. 13) or &+[0, (+V I&) (&lQSi. l0 l&0 2&&P~)i=-. -. ij &4 &&l&l&06&l&&'&&55&3. I& I"& '&~& I=. -'. It?& = e[5l&&&~ I?" 8l&0&t ~~&1 (2. 14) If we recall that H. $ I (r) = E' f . (r), that H. is hermitian, and that i n(m n nLm 1 the g I (r...

Parnell, Gregory Elliott

1978-01-01T23:59:59.000Z

349

A Novel Variational Principle arising from Electromagnetism  

E-Print Network [OSTI]

Analyzing one example of LC circuit in [8], show its Lagrange problem only have other type critical points except for minimum type and maximum type under many circumstances. One novel variational principle is established instead of Pontryagin maximum principle or other extremal principles to be suitable for all types of critical points in nonlinear LC circuits. The generalized Euler-Lagrange equation of new form is derived. The canonical Hamiltonian systems of description are also obtained under the Legendre transformation, instead of the generalized type of Hamiltonian systems. This approach is not only very simple in theory but also convenient in applications and applicable for nonlinear LC circuits with arbitrary topology and other additional integral constraints.

Hanzhong Wu

2009-05-06T23:59:59.000Z

350

Interdependence of Electricity System Infrastructure and Natural...  

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

Interdependence of Electricity System Infrastructure and Natural Gas Infrastructure - EAC 2011 Interdependence of Electricity System Infrastructure and Natural Gas Infrastructure -...

351

Measurement of \  

E-Print Network [OSTI]

MiniBooNE reports the first absolute cross sections for neutral current single \\pi^0 production on CH_2 induced by neutrino and antineutrino interactions measured from the largest sets of NC \\pi^0 events collected to date. The principal result consists of differential cross sections measured as functions of \\pi^0 momentum and \\pi^0 angle averaged over the neutrino flux at MiniBooNE. We find total cross sections of (4.76+/-0.05_{stat}+/-0.40_{sys})*10^{-40} cm^2/nucleon at a mean energy of =808 MeV and (1.48+/-0.05_{stat}+/-0.14_{sys})*10^{-40} cm^2/nucleon at a mean energy of =664 MeV for \

Aguilar-Arevalo, A A; Bazarko, A O; Brice, S J; Brown, B C; Bugel, L; Cao, J; Coney, L; Conrad, J M; Cox, D C; Curioni, A; Djurcic, Z; Finley, D A; Fleming, B T; Ford, R; Garcia, F G; Garvey, G T; Gonzales, J; Grange, J; Green, C; Green, J A; Hart, T L; Hawker, E; Imlay, R; Johnson, R A; Karagiorgi, G; Kasper, P; Katori, T; Kobilarcik, T; Kourbanis, I; Koutsoliotas, S; Laird, E M; Linden, S K; Link, J M; Liu, Y; Louis, W C; Mahn, K B M; Marsh, W; Mauger, C; McGary, V T; McGregor, G; Metcalf, W; Meyers, P D; Mills, F; Mills, G B; Monroe, J; Moore, C D; Mousseau, J; Nelson, R H; Nienaber, P; Nowak, J A; Osmanov, B; Ouedraogo, S; Patterson, R B; Pavlovic, Z; Perevalov, D; Polly, C C; Prebys, E; Raaf, J L; Ray, H; Roe, B P; Russell, A D; Sandberg, V; Schirato, R; Schmitz, D; Shaevitz, M H; Shoemaker, F C; Smith, D; Soderberg, M; Sorel, M; Spentzouris, P; Spitz, J; Stancu, I; Stefanski, R J; Sung, M; Tanaka, H A; Tayloe, R; Tzanov, M; Van de Water, R G; Wascko, M O; White, D H; Wilking, M J; Yang, H J; Zeller, G P; Zimmerman, E D

2009-01-01T23:59:59.000Z

352

Carbon Dioxide Measurement and Tracking We are combining our expertise in remote sensing, measurement,  

E-Print Network [OSTI]

. Measuring and quantifying a minute amount of human CO2 emissions against the huge background of natural CO2. Detecting, isolating, and quantifying the human contribution from a large natural background requires from nuclear tests and explosions using a network of satellites and ground-based sensors; this ability

353

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch RelatedcontentcharacteristicsMeasurements Related Links MC3E

354

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch RelatedcontentcharacteristicsMeasurements Related Links

355

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch RelatedcontentcharacteristicsMeasurements Related

356

Natural gas monthly, July 1990  

SciTech Connect (OSTI)

This report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. A glossary is included. 7 figs., 33 tabs.

Not Available

1990-10-03T23:59:59.000Z

357

Introduction The Nature of Design  

E-Print Network [OSTI]

Introduction The Nature of Design The Concept of Entropy in MTC Design Complexity Conclusions The Role of Entropy in Design Theory and Methodology Waseem A. Khan Jorge Angeles Centre for Intelligent. Entropy in Design 1 #12;Introduction The Nature of Design The Concept of Entropy in MTC Design Complexity

Berlin,Technische Universität

358

Curriculum in Renewable Natural Resources  

E-Print Network [OSTI]

Curriculum in Renewable Natural Resources Catalog 12-13 University Core Curriculum Required Courses............................................................................... (0-2) 1 43 Renewable Natural Resources Core Courses RENR 205 Fundamentals of Ecology............................................................ (3-0) 3 ESSM 351 Geographic Information Systems and Resource Management........................ (2

359

Natural gas monthly, August 1990  

SciTech Connect (OSTI)

This report highlights activities, events, and analyses of interest to public and private sector oganizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 33 tabs.

Not Available

1990-11-05T23:59:59.000Z

360

,"New York Natural Gas Summary"  

U.S. Energy Information Administration (EIA) Indexed Site

50NY3","N3010NY3","N3020NY3","N3035NY3","N3045NY3" "Date","Natural Gas Citygate Price in New York (Dollars per Thousand Cubic Feet)","New York Price of Natural Gas Delivered to...

Note: This page contains sample records for the topic "measuring natural variations" 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

NATIONAL MUSEUM OF NATURAL HISTORY  

E-Print Network [OSTI]

NATIONAL MUSEUM OF NATURAL HISTORY MUSEUM REPORT 2009 ­ 2010 @ 100 | PAST, PRESENT & FUTURE #12;NatioNal MuseuM of NatUral History @ 100 | Past, PreseNt & future on March 17, 1910, our doors opened of amazing advances, and the Museum's accomplishments have been no less significant. in our first century, we

Mathis, Wayne N.

362

Spatial variation of void ratio and shear band thickness in sand using X-ray computed tomography  

SciTech Connect (OSTI)

A detailed study of spatial variation of void ratio and shear band thickness measurements is presented in this paper. A prismatic sand specimen that initially measured 57{center_dot}4 mm wide x 120{center_dot}5 mm long x 182{center_dot}1 mm high was sheared under plane-strain (biaxial) loading conditions. The specimen was prepared at a relative density of 79% using F-75 Ottawa sand. X-ray computed tomography was used to scan the specimen before shearing and after the onset of the shear band. The specimen failed through a single shear band with an inclination angle of 65{center_dot}6{sup o} measured from the direction of the minor principal stress. Computer algorithms were developed to calibrate CT images and quantify void ratio (e) variation within the specimen. CT data analysis revealed cross-sectional spatial variation in void ratio where density is higher in regions close to the edges of the specimen due to membrane effects and confining pressure with no significant variation in void ratio in the axial direction (top to bottom) before shearing. The shear band was easily identified from the CT images, and analysis of void ratio showed a noticeable jump in void ratio profile across the shear band. A detailed statistical summary of the thickness of the shear band and variation of void ratio across the shear band is presented and discussed.

Alshibli, K.A.; Hasan, A. (LSU)

2008-05-01T23:59:59.000Z

363

Measurement of Cosmogenic 32 P Activities  

E-Print Network [OSTI]

Measurement of Cosmogenic 32 P and 33 P Activities in Rainwater and Seawater Claudia R. Benitez developed a new method for the collection, purification, and measurement of natural levels of 32P and 33P and anion and cation exchange columns. Rainwater and dissolved seawater samples were extracted from large

Benitez-Nelson, Claudia

364

Measure Guideline: Hybrid Foundation Insulation Retrofits  

SciTech Connect (OSTI)

This measure guideline provides recommendations for designs and variations for retrofit hybrid assemblies in improving interior foundation insulation and water management of basements. Variations include closed cell spray foam (ccSPF) with membrane waterproofing or air gap membrane drainage layers, rigid board foam insulation at flat walls (cast concrete or CMU block), a 'partial drainage' detail making use of the bulk water drainage that occurs through the field of a rubble stone wall, and non-drained spray foam assemblies (including slab insulation).

Ueno, K.; Lstiburek, J.

2012-05-01T23:59:59.000Z

365

Natural gas monthly, October 1991  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), US Department of Energy (DOE). The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. The data in this publication are collected on surveys conducted by the EIA to fulfill its responsibilities for gathering and reporting energy data. Some of the data are collected under the authority of the Federal Energy Regulatory Commission (FERC), an independent commission within the DOE, which has jurisdiction primarily in the regulation of electric utilities and the interstate natural gas industry. Geographic coverage is the 50 States and the District of Columbia. 16 figs., 33 tabs.

Not Available

1991-11-05T23:59:59.000Z

366

EXTINCTION AND POLYCYCLIC AROMATIC HYDROCARBON INTENSITY VARIATIONS ACROSS THE H II REGION IRAS 12063-6259  

SciTech Connect (OSTI)

The spatial variations in polycyclic aromatic hydrocarbon (PAH) band intensities are normally attributed to the physical conditions of the emitting PAHs, however in recent years it has been suggested that such variations are caused mainly by extinction. To resolve this question, we have obtained near-infrared (NIR), mid-infrared (MIR), and radio observations of the compact H II region IRAS 12063-6259. We use these data to construct multiple independent extinction maps and also to measure the main PAH features (6.2, 7.7, 8.6, and 11.2 {mu}m) in the MIR. Three extinction maps are derived: the first using the NIR hydrogen lines and case B recombination theory; the second combining the NIR data with radio data; and the third making use of the Spitzer/IRS MIR observations to measure the 9.8 {mu}m silicate absorption feature using the Spoon method and PAHFIT (as the depth of this feature can be related to overall extinction). The silicate absorption over the bright, southern component of IRAS 12063-6259 is almost absent while the other methods find significant extinction. While such breakdowns of the relationship between the NIR extinction and the 9.8 {mu}m absorption have been observed in molecular clouds, they have never been observed for H II regions. We then compare the PAH intensity variations in the Spitzer/IRS data after dereddening to those found in the original data. It was found that in most cases, the PAH band intensity variations persist even after dereddening, implying that extinction is not the main cause of the PAH band intensity variations.

Stock, D. J.; Peeters, E.; Otaguro, J. N. [Department of Physics and Astronomy, University of Western Ontario, London, ON N6A 3K7 (Canada); Tielens, A. G. G. M. [Leiden Observatory, Leiden University, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Bik, A. [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany)

2013-07-01T23:59:59.000Z

367

NATURAL CONVECTION IN PASSIVE SOLAR BUILDINGS: EXPERIMENTS, ANALYSIS AND RESULTS  

SciTech Connect (OSTI)

Computer programs have been developed to numerically simulate natural convection in two- and three-dimensional room geometries. The programs have been validated using published data from the literature, results from a full-scale experiment performed at the Massachusetts Institute of Technology, and results from a small-scale experiment performed at LBL. One of the computer programs has been used to study the influence of natural convection on the thermal performance of a single zone in a direct-gain passive solar building. It is found that the convective heat transfer coefficients between the air and the enclosure surfaces can be substantially different from the values assumed in the standard building energy analysis methods, and can exhibit significant variations across a given surface. This study implies that the building heating loads calculated by standard building energy analysis methods may have substantial errors as a result of their use of common assumptions regarding the convection processes which occur in an enclosure.

Gadgil, A.; Bauman, F.; Kammerud, R.

1981-04-01T23:59:59.000Z

368

Natural gas pipeline technology overview.  

SciTech Connect (OSTI)

The United States relies on natural gas for one-quarter of its energy needs. In 2001 alone, the nation consumed 21.5 trillion cubic feet of natural gas. A large portion of natural gas pipeline capacity within the United States is directed from major production areas in Texas and Louisiana, Wyoming, and other states to markets in the western, eastern, and midwestern regions of the country. In the past 10 years, increasing levels of gas from Canada have also been brought into these markets (EIA 2007). The United States has several major natural gas production basins and an extensive natural gas pipeline network, with almost 95% of U.S. natural gas imports coming from Canada. At present, the gas pipeline infrastructure is more developed between Canada and the United States than between Mexico and the United States. Gas flows from Canada to the United States through several major pipelines feeding U.S. markets in the Midwest, Northeast, Pacific Northwest, and California. Some key examples are the Alliance Pipeline, the Northern Border Pipeline, the Maritimes & Northeast Pipeline, the TransCanada Pipeline System, and Westcoast Energy pipelines. Major connections join Texas and northeastern Mexico, with additional connections to Arizona and between California and Baja California, Mexico (INGAA 2007). Of the natural gas consumed in the United States, 85% is produced domestically. Figure 1.1-1 shows the complex North American natural gas network. The pipeline transmission system--the 'interstate highway' for natural gas--consists of 180,000 miles of high-strength steel pipe varying in diameter, normally between 30 and 36 inches in diameter. The primary function of the transmission pipeline company is to move huge amounts of natural gas thousands of miles from producing regions to local natural gas utility delivery points. These delivery points, called 'city gate stations', are usually owned by distribution companies, although some are owned by transmission companies. Compressor stations at required distances boost the pressure that is lost through friction as the gas moves through the steel pipes (EPA 2000). The natural gas system is generally described in terms of production, processing and purification, transmission and storage, and distribution (NaturalGas.org 2004b). Figure 1.1-2 shows a schematic of the system through transmission. This report focuses on the transmission pipeline, compressor stations, and city gates.

Folga, S. M.; Decision and Information Sciences

2007-11-01T23:59:59.000Z

369

Microsoft Word - S08364_SeasonalVariation  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*. .09Annual10 Natural GasGroundwater

370

Abstract Measurement  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects ofAbout ScienceAbout OakMeasurement of the ν µ

371

ARM - Measurements  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD) by Microtops Atmospheric OpticalExperimentgovField CampaignsMidlatitudegovMeasurementsSurface

372

Natural Climate Variability Michael Ghil  

E-Print Network [OSTI]

periodic (often called quasi-periodic) variations in Earth's orbit around the Sun affect the intensity-gas concentrations in the atmosphere, such as that of carbon dioxide (CO2), will increase surface temperatures through the greenhouse effect (see Projection of Future Changes in Climate, Volume 1). This temperature

Ghil, Michael

373

Variations of ionization potential and electron affinity as a function of surface orientation: The case of orthorhombic SnS  

SciTech Connect (OSTI)

We investigated the dependence of absolute SnS band-edge energies on surface orientation using density functional theory and GW method for all surfaces with Miller indices ?3?h,k,l?3 and found variations as large as 0.9?eV as a function of (hkl). Variations of this magnitude may affect significantly the performance of photovoltaic devices based on polycrystalline SnS thin-films and, in particular, may contribute to the relatively low measured open circuit voltage of SnS solar cells. X-ray diffraction measurements confirm that our thermally evaporated SnS films exhibit a wide distribution of different grain orientations, and the results of Kelvin force microscopy support the theoretically predicted variations of the absolute band-edge energies.

Stevanovi?, Vladan, E-mail: vstevano@mines.edu [Colorado School of Mines, Golden, Colorado 80401 (United States); National Renewable Energy Laboratory, Golden, Colorado 80401 (United States); Hartman, Katy; Jaramillo, R.; Buonassisi, Tonio [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Ramanathan, Shriram [Harvard University, Cambridge, Massachusetts 02138 (United States); Graf, Peter [National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

2014-05-26T23:59:59.000Z

374

Chinese Journal of Polar Science, Vol. 19, No.2, 168 -184, December 2008 Modeling seasonal variations of ocean and sea ice circulation in  

E-Print Network [OSTI]

(CILER) , School of Natural Resources and Envi- ronment, University of Michigan, 4840 S State Road, Ann variations of ocean and sea ice circulation in the Beaufort and Chukchi Seas: A model-data fusion study Wang, M148108 USA 2 Department of Ocean Sciences, Tokyo University of Marine Science and Technology, 4

375

Natural gas monthly, February 1998  

SciTech Connect (OSTI)

This issue of the Natural Gas Monthly (NGM) presents the most recent estimates of natural gas data from the Energy Information Administration. Estimates extend through February 1998 for many data series, and through November 1997 for most natural gas prices. Highlights of the natural gas data contained in this issue are: Preliminary estimates for January and February 1998 show that dry natural gas production, net imports, and consumption are all within 1 percent of their levels in 1997. Warmer-than-normal weather in recent months has resulted in lower consumption of natural gas by the residential sector and lower net withdrawals of gas from under round storage facilities compared with a year ago. This has resulted in an estimate of the amount of working gas in storage at the end of February 1998 that is 18 percent higher than in February 1997. The national average natural gas wellhead price is estimated to be $3.05 per thousand cubic feet in November 1997, 7 percent higher than in October. The cumulative average wellhead price for January through November 1997 is estimated to be $2.42 per thousand cubic feet, 17 percent above that of the same period in 1996. This price increase is far less than 36-percent rise that occurred between 1995 and 1996. 6 figs., 26 tabs.

NONE

1998-02-01T23:59:59.000Z

376

Natural Product Xn on matrices  

E-Print Network [OSTI]

This book has eight chapters. The first chapter is introductory in nature. Polynomials with matrix coefficients are introduced in chapter two. Algebraic structures on these polynomials with matrix coefficients is defined and described in chapter three. Chapter four introduces natural product on matrices. Natural product on super matrices is introduced in chapter five. Super matrix linear algebra is introduced in chapter six. Chapter seven claims only after this notion becomes popular we can find interesting applications of them. The final chapter suggests over 100 problems some of which are at research level.

W. B. Vasantha Kandasamy; Florentin Smarandache

2012-02-20T23:59:59.000Z

377

P wave velocity variations in the Coso region, California, derived...  

Open Energy Info (EERE)

Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: P wave velocity variations in the Coso region, California, derived from local earthquake...

378

arrestin fold variations: Topics by E-print Network  

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

25 Next Page Last Page Topic Index 1 Variational theory for site resolved protein folding free energy surfaces Condensed Matter (arXiv) Summary: We present a microscopic...

379

acute postural variation: Topics by E-print Network  

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

of Constants . . . . . . . . . . . . . . . . . . . . . . 20 3.1.1 Flow Graphs Mller-Olm, Markus 469 Multiobjective Optimization Problem with Variational Inequality Constraints...

380

avian predation variation: Topics by E-print Network  

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

1 Alexander V. Badyaev Avian life history variation along altitudinal gradients Environmental Sciences and Ecology Websites Summary: Alexander V. Badyaev Avian life history...

Note: This page contains sample records for the topic "measuring natural variations" 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

TEMPORAL VARIATIONS OF FRACTURE DIRECTIONS AND FRACTURE DENSITIES...  

Open Energy Info (EERE)

TEMPORAL VARIATIONS OF FRACTURE DIRECTIONS AND FRACTURE DENSITIES IN THE COSO GEOTHERMAL FIELD FROM ANALYSES OF SHEAR-WAVE SPLITTING Jump to: navigation, search OpenEI Reference...

382

Variations in dissolved gas compositions of reservoir fluids...  

Open Energy Info (EERE)

A. E.; Copp, J. F. . 111991. Variations in dissolved gas compositions of reservoir fluids from the Coso geothermal field. Proceedings of () ; () : Sixteenth workshop on...

383

Entropy, Invertibility and Variational Calculus of the Adapted Shifts on Wiener space  

E-Print Network [OSTI]

In this work we study the necessary and sufficient conditions for a positive random variable whose expectation under the Wiener measure is one, to be represented as the Radon-Nikodym derivative of the image of the Wiener measure under an adapted perturbation of identity with the help of the associated innovation process. We prove that the innovation conjecture holds if and only if the original process is almost surely invertible. We also give variational characterizations of the invertibility of the perturbations of identity and the representability of a positive random variable whose total mass is equal to unity. We prove in particular that an adapted perturbation of identity $U=I_W+u$ satisfying the Girsanov theorem, is invertible if and only if the kinetic energy of $u$ is equal to the entropy of the measure induced with the action of $U$ on the Wiener measure $\\mu$, in other words $U$ is invertible iff $$ \\half \\int_W|u|_H^2d\\mu=\\int_W \\frac{dU\\mu}{d\\mu}\\log\\frac{dU\\mu}{d\\mu}d\\mu >. $$ otherwise the l.h.s. is always strictly greater than the r.h.s. The relations with the Monge-Kantorovitch measure transportation are also studied. An application of these results to a variational problem related to large deviations is also given.

Ali Süleyman Üstünel

2009-03-23T23:59:59.000Z

384

POLARIZATION AND VARIATION OF NEAR-INFRARED LIGHT FROM FERMI/LAT {gamma}-RAY SOURCES  

SciTech Connect (OSTI)

We present the results of our follow-up observation program of {gamma}-ray sources detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. Twenty-six blazars and thirty-nine sources unidentified at other wavelengths were targeted at the Infrared Survey Facility 1.4 m telescope equipped with the SIRIUS/SIRPOL imager and polarimeter. H-band magnitudes of the blazars at the epoch of 2010 December-2011 February are presented, which reveal clear flux variation since the Two Micron All Sky Survey observations and can be useful data for variation analyses of these objects in longer periods. We also find that nearly half of the {gamma}-ray blazars are highly (>10%) polarized in near-infrared wavelengths. Combining the polarization and variation properties, most ({approx}90%) of the blazars are clearly distinguished from all other types of objects at high Galactic latitudes. On the other hand, we find only one highly polarized and/or variable object in the fields of unidentified sources. This object is a counterpart of the optical variable source PQV1 J131553.00-073302.0 and the radio source NVSS J131552-073301 and is a promising candidate of new {gamma}-ray blazars. From the measured polarization and variation statistics, we conclude that most of the Fermi/LAT unidentified sources are not likely similar types of objects to the known {gamma}-ray blazars.

Fujiwara, M.; Matsuoka, Y. [Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan); Ienaka, N., E-mail: matsuoka@a.phys.nagoya-u.ac.jp [Institute of Astronomy, The University of Tokyo, Osawa 2-21-1, Mitaka, Tokyo 181-0015 (Japan)

2012-10-01T23:59:59.000Z

385

Pulsation effects on orifice measurement  

SciTech Connect (OSTI)

The natural gas transmission industry has historically relied on the orifice as the contractual standard for custody transfer. The simplicity, reliability, low maintenance, rangeability (afforded by changing plate beta ratios) and repeatability of the orifice, together with reliable secondary systems, has dispelled flow measurement replacement attempts. While an influx of other meter types has occurred in recent years, the dominance of orifice meters dictate that any serious attempt at improved gas measurement accuracy must emphasize all phases of orifice meter installation. This paper reports on unsteady flow (pulsation) which can compromise orifice system accuracy. Instruments and error calculations for pulsation are reviewed.

Doelling, C. (Pipeline and Compressor Research Council, Tulsa, OK (US))

1992-02-01T23:59:59.000Z

386

Measurement of high voltage using Rutherford backscattering spectrometry  

E-Print Network [OSTI]

A novel variation of Rutherford Backscattering Spectrometry (RBS) has been utilized to measure a high voltage collected on an aluminum target by Direct Energy Conversion. The maximum high voltage on the target was measured to be 97.5 kV +/- 2 k...

Abrego, Celestino Pete

2007-04-25T23:59:59.000Z

387

Natural Resources Protection Act (Maine)  

Broader source: Energy.gov [DOE]

Maine's Department of Environmental Protection requires permits for most activities that occur in a protected natural resource area or adjacent to water resources such as rivers or wetlands. An ...

388

NATURAL RESOURCES CONSERVATION Environmental Conservation  

E-Print Network [OSTI]

NATURAL RESOURCES CONSERVATION Environmental Conservation Fall Semester Spring Semester Freshman/12 #12;***For the Environmental Conservation concentration, students must complete 18 additional conservation and/or environmentally-related credits in a curriculum plan designed to meet specific goals

Schweik, Charles M.

389

NATURAL RESOURCES CONSERVATION ENVIRONMENTAL CONSERVATION  

E-Print Network [OSTI]

NATURAL RESOURCES CONSERVATION ENVIRONMENTAL CONSERVATION For students entering after 8 ____________________________________________________________________ Requirements for the major = 76 credits, plus an additional 18 credits in conservation/environmentally related Completion of a plan that incorporates 18 additional credits in conservation or environmentally related

Schweik, Charles M.

390

Regulation of Natural Gas (Texas)  

Broader source: Energy.gov [DOE]

This legislation provides for the protection of public and private interests with regards to natural gas production, prohibits waste, and compels ratable production to enable owners of gas in a...

391

Natural Language Processing with Python  

E-Print Network [OSTI]

· Cambridge · Farnham · Köln · Sebastopol · Taipei · Tokyo #12;Natural Language Processing with Python Gravenstein Highway North, Sebastopol, CA 95472. O'Reilly books may be purchased for educational, business

Smith, Marc L.

392

Natural Gas Monthly August 1998  

SciTech Connect (OSTI)

The Natural Gas Monthly (NGM) highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. Explanatory notes supplement the information found in tables of the report. A description of the data collection surveys that support the NGM is provided. A glossary of the terms used in this report is also provided to assist readers in understanding the data presented in this publication.

NONE

1998-08-01T23:59:59.000Z

393

Afghanistan's energy and natural resources  

SciTech Connect (OSTI)

This study provides a resource perspective from which to better plan the necessary steps toward the viable reconstruction and economic development of post war Afghanistan. The vast availability of natural resources affords the opportunity to formulate a framework upon which Afghanistan can grow and prosper in the future. The paper includes the following sections: Historical Overview: Thwarted Opportunities; Natural Resources: A Survey of Possibilities; The Future: Post War Rehabilitation and Reconstruction; and Conclusions: Future Energy Sources.

Balcome-Rawding, R.; Porter, K.C.

1989-10-01T23:59:59.000Z

394

Variation in the annual average radon concentration measured in homes in Mesa County, Colorado  

SciTech Connect (OSTI)

The purpose of this study is to examine the variability in the annual average indoor radon concentration. The TMC has been collecting annual average radon data for the past 5 years in 33 residential structures in Mesa County, Colorado. This report is an interim report that presents the data collected up to the present. Currently, the plans are to continue this study in the future. 62 refs., 3 figs., 12 tabs.

Rood, A.S.; George, J.L.; Langner, G.H. Jr.

1990-04-01T23:59:59.000Z

395

Discussion! Measurements on these suites of L and LL chondrites show that internal variation in Ti  

E-Print Network [OSTI]

with substitution of hydrogen, which bonds with oxygen in the lattice to form hydroxyl groups. ! The charge excess in olivine with increasing grade is consistent with diffusive loss of hydrogen during heating and entry of Ti. (2012) This meeting, Abst. #2601.! Effects of Metamorphism on the Valence and Coordination of! Titanium

Grossman, Lawrence

396

Anthropogenic emissions of nonmethane hydrocarbons in the northeastern United States: Measured seasonal variations from  

E-Print Network [OSTI]

influenced by sources not associated with fuel combustion. Changes in the observed correlations of CO2 and CO relative to acetylene are consistent with published changes in the estimated emissions of CO2 and CO over these emissions in the United States. Hydrocarbon, NOx and CO sources include fuel combustion in both mobile

Cohen, Ronald C.

397

Thermally driven visco-elastic measurement technique via spectral variations in scanning probe microscopy cantilevers  

E-Print Network [OSTI]

Understanding how fluids respond to various deformations is of great importance to a spectrum of disciplines ranging from bio-medical research on joint replacements to sealing technology in industrial machinery. Specifically, ...

Jones, Ryan Edward, 1974-

2004-01-01T23:59:59.000Z

398

Measuring clay property variation and effects on ceramic pot filter performance  

E-Print Network [OSTI]

Pure Home Water (PHW) is a non-profit organization in Ghana whose mission is to provide safe drinking water to Ghana's Northern Region - the poorest part of the country. Originally a distributor of ceramic pot filters ...

Hester, Joshua (Joshua C.)

2012-01-01T23:59:59.000Z

399

A comparison of terrestrial water storage variations from GRACE with in situ measurements from Illinois  

E-Print Network [OSTI]

J. Clim. , 7(5), 822 – 833. Peltier, W. R. (1996), MantleScience, 273, 1359 – 1364. Peltier, W. R. (2004), Globaldeglaciation model of Peltier [2004], convolved with visco-

Swenson, Sean; Yeh, Pat J.-F.; Wahr, John; Famiglietti, James

2006-01-01T23:59:59.000Z

400

Variations in Biculturalism: Measurement, Validity, Mental and Physical Health Correlates, and Group Differences  

E-Print Network [OSTI]

MEIM affirmation/belonging 17. EIS total ethnic identity 18.EIS exploration 19.EIS affirmation 20. EIS resolution Acculturation Attitudes

Huynh, Que-Lam

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

Natural gas monthly, November 1997  

SciTech Connect (OSTI)

This issue of the Natural Gas Monthly presents the most recent estimates of natural gas data from the Energy Information Administration. Estimates extend through November for many data series, and through August for most natural gas prices. Highlights of the most recent data estimates are: (1) Preliminary estimates of dry natural gas production and total consumption available through November 1997 indicate that both series are on track to end the year at levels close to those of 1996. Cumulative dry production is one-half percent higher than in 1996 and consumption is one-half percent lower. (2) Natural gas production is estimated to be 52.6 billion cubic feet per day in November 1997, the highest rate since March 1997. (3) After falling 8 percent in July 1997, the national average wellhead price rose 10 percent in August 1997, reaching an estimated $2.21 per thousand cubic feet. (4) Milder weather in November 1997 compared to November 1996 has resulted in significantly lower levels of residential consumption of natural gas and net storage withdrawls than a year ago. The November 1997 estimates of residential consumption and net withdrawls are 9 and 20 percent lower, respectively, than in November 1996.

NONE

1997-11-01T23:59:59.000Z

402

Geochemistry of Natural Components in the Near-Field Environment, Yucca Mountain, Nevada  

SciTech Connect (OSTI)

The natural near-field environment in and around the emplacement drifts of the proposed nuclear waste repository at Yucca Mountain, Nevada, includes the host rock, dust, seepage, and pore water. The chemical compositions of these components have been determined for assessing possible chemical and mineralogical reactions that may occur after nuclear waste is emplaced. The rock hosting the proposed repository is relatively uniform as shown by a mean coefficient of variation (CV) of 9 percent for major elements. In contrast, compositional variations of dust (bulk and water-soluble fractions), pore water, and seepage are large with mean CVs ranging from 28 to 64 percent. (authors)

Peterman, Zell E. [Yucca Mountain Project Branch, U.S. Geological Survey, MS 963 Box 25046 Denver Federal Center, 6th and Kipling Sts., Denver, CO, 80225 (United States); Oliver, Thomas A. [c/o U.S. Geological Survey, S.M. Stoller Corporation, MS 421 Box 25046 Denver Federal Center, Denver, CO, 80225 (United States)

2007-07-01T23:59:59.000Z

403

Easing the Natural Gas Crisis: Reducing Natural Gas Prices Through Electricity Supply Diversification -- Testimony  

E-Print Network [OSTI]

NANGAS (North American Natural Gas Analysis System), E2020 (Modeling Forum (EMF). 2003. Natural Gas, Fuel Diversity and2003. Increasing U.S. Natural Gas Supplies: A Discussion

Wiser, Ryan

2005-01-01T23:59:59.000Z

404

DEPARTMENT OF HUMAN DIMENSIONS OF NATURAL RESOURCES  

E-Print Network [OSTI]

CODE DEPARTMENT OF HUMAN DIMENSIONS OF NATURAL RESOURCES College of Natural Resources Colorado;3 DEPARTMENT OF NATURAL HUMAN DIMENSIONS OF NATURAL RESOURCES CODE ARTICLE I. GOAL AND OBJECTIVES A. DEPARTMENT MISSION The mission of the Department of Human Dimensions of Natural Resources is to contribute

405

HST SPECTRAL MAPPING OF L/T TRANSITION BROWN DWARFS REVEALS CLOUD THICKNESS VARIATIONS  

SciTech Connect (OSTI)

Most directly imaged giant exoplanets are fainter than brown dwarfs with similar spectra. To explain their relative underluminosity, unusually cloudy atmospheres have been proposed. However, with multiple parameters varying between any two objects, it remained difficult to observationally test this idea. We present a new method, sensitive time-resolved Hubble Space Telescope near-infrared spectroscopy, to study two rotating L/T transition brown dwarfs (2M2139 and SIMP0136). The observations provide spatially and spectrally resolved mapping of the cloud decks of the brown dwarfs. The data allow the study of cloud structure variations while other parameters are unchanged. We find that both brown dwarfs display variations of identical nature: J- and H-band brightness variations with minimal color and spectral changes. Our light curve models show that even the simplest surface brightness distributions require at least three elliptical spots. We show that for each source the spectral changes can be reproduced with a linear combination of only two different spectra, i.e., the entire surface is covered by two distinct types of regions. Modeling the color changes and spectral variations together reveal patchy cloud covers consisting of a spatially heterogeneous mix of low-brightness, low-temperature thick clouds and brighter, thin, and warm clouds. We show that the same thick cloud patches seen in our varying brown dwarf targets, if extended to the entire photosphere, predict near-infrared colors/magnitudes matching the range occupied by the directly imaged exoplanets that are cooler and less luminous than brown dwarfs with similar spectral types. This supports the models in which thick clouds are responsible for the near-infrared properties of these ''underluminous'' exoplanets.

Apai, Daniel [Department of Astronomy, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721 (United States); Radigan, Jacqueline; Jayawardhana, Ray [Department of Astronomy, University of Toronto, 50 St. George Street, Toronto M5S 3H4 (Canada); Buenzli, Esther [Department of Astronomy and Steward Observatory, 933 N. Cherry Avenue, University of Arizona, Tucson, AZ 85721 (United States); Burrows, Adam [Department of Astrophysical Sciences, 105 Peyton Hall, Princeton University, Princeton, NJ 08544 (United States); Reid, Iain Neill, E-mail: apai@as.arizona.edu [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21212 (United States)

2013-05-10T23:59:59.000Z

406

Discovery of Photospheric Calcium Line Strength Variations in the DAZd White Dwarf G29-38  

E-Print Network [OSTI]

Metals in the photospheres of white dwarfs with Teff between 12,000 and 25,000 K should gravitationally settle out of these atmospheres in 1-2 weeks. Temporal variations in the line strengths of these metals could provide a direct measurement of episodic metal accretion. Using archival VLT and Keck spectroscopy, we find evidence that the DAZd white dwarf G29-38 shows significant changes in its Ca II K line strength. At the two best-observed epochs, we find that the Ca line equivalent width (EW) = 165 +- 4 mA (in 1996.885) and 280 +- 8 mA (in 1999.653), which is an increase of 70%. We consider the effect that pulsation has on the Ca EWs for this known variable star, and find that it adds an error of < 1 mA to these measurements. Calcium line strengths at other observational epochs support variations with timescales as short as two weeks. These Ca EW variations indicate that the metal accretion process in G29-38, presumably from its debris disk, is episodic on timescales of a few weeks or less, and thus the accretion is not dominated by Poynting-Robertson drag from an optically thin, continuous disk, which has a timescale of ~1 year.

Ted von Hippel; Susan E. Thompson

2007-02-25T23:59:59.000Z

407

The effect of laser pulse shape variations on the adiabat of NIF capsule implosions  

SciTech Connect (OSTI)

Indirectly driven capsule implosions on the National Ignition Facility (NIF) [Moses et al., Phys. Plasmas 16, 041006 (2009)] are being performed with the goal of compressing a layer of cryogenic deuterium-tritium (DT) fuel to a sufficiently high areal density (?R) to sustain the self-propagating burn wave that is required for fusion power gain greater than unity. These implosions are driven with a temporally shaped laser pulse that is carefully tailored to keep the DT fuel on a low adiabat (ratio of fuel pressure to the Fermi degenerate pressure). In this report, the impact of variations in the laser pulse shape (both intentionally and unintentionally imposed) on the in-flight implosion adiabat is examined by comparing the measured shot-to-shot variations in ?R from a large ensemble of DT-layered ignition target implosions on NIF spanning a two-year period. A strong sensitivity to variations in the early-time, low-power foot of the laser pulse is observed. It is shown that very small deviations (?0.1% of the total pulse energy) in the first 2 ns of the laser pulse can decrease the measured ?R by 50%.

Robey, H. F.; MacGowan, B. J.; Landen, O. L.; LaFortune, K. N.; Widmayer, C.; Celliers, P. M.; Moody, J. D.; Ross, J. S.; Ralph, J.; LePape, S.; Berzak Hopkins, L. F.; Spears, B. K.; Haan, S. W.; Clark, D.; Lindl, J. D.; Edwards, M. J. [LLNL, Livermore, California 94550 (United States)] [LLNL, Livermore, California 94550 (United States)

2013-05-15T23:59:59.000Z

408

Variation in DNA content of blood cells of largemouth bass from contaminated and uncontaminated waters  

SciTech Connect (OSTI)

Largemouth bass (Micropterus salmoides) were collected from locations with and without documented histories of pollution in Georgia and South Carolina. Whole blood samples were collected from over 3,000 bass and analyzed by flow cytometry to measure changes in cellular DNA content and cell cycle distribution. The coefficient of variation (CV) of the cell cycle phase G{sub 0}G{sub 1} peak was used as a measure of variation in DNA content within an individual. The mean CV varied significantly among locations, and some locations with known chemical or radioactive contaminants had higher CVs. Plotting the frequency distribution of CV values for each site revealed greater skewness and kurtosis in most locations with known contaminants. In each case, a right skewness indicated higher proportions of bass with unusually high CV in these locations. Aneuploid-like patterns were detected in the DNA histograms of five fish, all from locations with histories of contamination. The percentage of cells distributed among phases of the cell cycle (G{sub 0}/G{sub 1}, S, and G{sub 2}M) varied significantly among locations, but there was no apparent relationship to contaminant distribution. Differences in CV and frequency of aneuploids among sites with and without histories of pollution were generally small, but increased variation in DNA content may be associated with contaminant exposure at some locations.

Lingenfelser, S.F. [Fish and Wildlife Service, White Marsh, VA (United States); Dallas, C.E. [Univ. of Georgia, Athens, GA (United States). Dept. of Pharmacology and Toxicology; Jagoe, C.H.; Smith, M.H.; Brisbin, I.L. Jr.; Chesser, R.K. [Savannah River Ecology Lab., Aiken, SC (United States)

1997-10-01T23:59:59.000Z

409

Regular Variation of GARCH Processes Bojan Basrak1  

E-Print Network [OSTI]

Regular Variation of GARCH Processes Bojan Basrak1 EURANDOM Richard A. Davis2 Colorado State University Thomas Mikosch3 University of Copenhagen Short Title: Regular Variation of GARCH Processes Abstract We show that the finite-dimensional distributions of a GARCH process are regularly varying, i

Davis, Richard A.

410

Electrostatic Free Energy and its Variations in Implicit Solvent Models  

E-Print Network [OSTI]

Electrostatic Free Energy and its Variations in Implicit Solvent Models Jianwei Che , Joachim. The unique set of such concentrations that minimize this free energy are given by the usual Boltzmann. The variation of the electrostatic free energy with respect to the location change of solute-solvent interfaces

Li, Bo

411

INTERSPECIFIC VARIATION IN FRUIT SHAPE: ALLOMETRY, PHYLOGENY, AND ADAPTATION TO  

E-Print Network [OSTI]

INTERSPECIFIC VARIATION IN FRUIT SHAPE: ALLOMETRY, PHYLOGENY, AND ADAPTATION TO DISPERSAL AGENTS' 4 . Investigations on fruit and fruiting characteristics of animal-dispersed. fleshy- fruited of interspecific variation in fruit shape (as assessed bq length and width) among vertebrate-dispersed plants

Herrera, Carlos M.

412

Gravitational Potential Variations of the Sun and Moon for Estimation  

E-Print Network [OSTI]

Gravitational Potential Variations of the Sun and Moon for Estimation of Reservoir Compressibility by the moon and the sun. The potential variations are coupled to the reservoir pressure pulsations through for the gravitational potential due to the most impor- tant sources, the moon and the sun, must be obtained. Although

Firoozabadi, Abbas

413

Magnetospheric responses to sudden and quasiperiodic solar wind variations  

E-Print Network [OSTI]

Magnetospheric responses to sudden and quasiperiodic solar wind variations K.-H. Kim,1 C. A.e., magnetosphere, magnetosheath, and solar wind) because of the solar wind dynamic pressure variations and its high orbital inclination near the subsolar magnetopause meridian. When Polar was in the magnetosheath

California at Berkeley, University of

414

Fractal Nature of Solar Interior  

E-Print Network [OSTI]

Fractal method has been studied to understand the irregular and chaotic nature of any physical structure. Conventionally it is suggested that the solar interior is rigid in nature. Since solar neutrino flux is the indicator of the interior solar structure it is natural to study the solar neutrino flux source to find if the nuclear energy generation inside the sun is fractal in nature or not. At present there exist five solar neutrino experiments to detect neutrinos from the sun which can suggest which type of nuclear energy generation occurs inside the sun. Since we know that the solar atmosphere is irregular in nature many authors have studied this irregular nature by fractal analysis. In this regard we have studied solar neutrino flux data from 1) Homestake detector during the period from March, 1970 to April, 1994; 2) SAGE detector during the period from 1st January, 1990 to 31st December, 2000; 3) SAGE detector during the period from April, 1998 to December, 2001; 4) GALLEX detector during the period from May, 1991 to January, 1997; 5) GNO detector during the period from May, 1998 to December, 2001; 6) GALLEX-GNO detector (combined data) from May, 1991 to December, 2001; 7) average of the data from GNO and SAGE detectors during the period from May, 1998 to December, 2001; 8) 5-day-long samples from Super-Kamiokande-I detector during the period from June, 1996 to July,2001; 9) 10-day-long samples from Super-Kamiokande-I detector during the period from June,1996 to July,2001 and 10) 45-day-long samples from Super-Kamiokande-I detector during the period from June,1996 to July,2001 by fractal analysis and we have arrived at the conclusion that the solar neutrino flux data are fractal in nature.

Koushik Ghosh; Probhas Raychaudhuri

2006-05-04T23:59:59.000Z

415

Magnetotelluric measurements  

SciTech Connect (OSTI)

The ideas of flux quantization and Josephson tunneling are reviewed, and the operation of the dc SQUID as a magnetometer is described. The SQUID currently used for magnetotellurics has a sensitivity of 10/sup -14/ T Hz/sup -1/2/, a dynamic range at 10/sup 7/ in a 1 Hz bandwidth, a frequency response from 0 to 40 kHz, and a slewing rate of 5 x 10/sup -5/T s/sup -1/. Recent improvements in sensitivity are discussed: SQUIDS are rapidly approaching the limit imposed by the uncertainty principle. The essential ideas of magnetotelluric (MT) measurements are outlined, and it is shown how the remote reference method can lead to major reductions in bias errors compared to more conventional schemes. The field techniques of the Berkeley group are described. The practical application of MT requires that amplitude and phase spectra of apparent resistivities be transformed into a geologically useful distribution of subsurface resistivities. In many areas where MT is being applied today, the technique may not provide the information needed because stations are too few and widely spaced, or because we are unable to interpret data influenced by complex 3-D resistivity features. The results of two surveys, one detailed, the other regional, over the Klamath Basin, Oregon, are examined. The detailed survey is able to resolve small (1 km wide) structural features that are missed or add a component of spatial aliasing to the regional data. On the other hand, the regional survey avoids truncation effects that may occur when the survey undersamples an area.

Clarke, J.; Goldstein, N.E.

1980-06-01T23:59:59.000Z

416

Measuring Safeguards Culture  

SciTech Connect (OSTI)

As the International Atomic Energy Agency (IAEA) implements a State Level Approach to its safeguards verification responsibilities, a number of countries are beginning new nuclear power programs and building new nuclear fuel cycle faculties. The State Level approach is holistic and investigatory in nature, creating a need for transparent, non-discriminatory judgments about a state's nonproliferation posture. In support of this need, the authors previously explored the value of defining and measuring a state's safeguards culture. We argued that a clear definition of safeguards culture and an accompanying set of metrics could be applied to provide an objective evaluation and demonstration of a country's nonproliferation posture. As part of this research, we outlined four high-level metrics that could be used to evaluate a state's nuclear posture. We identified general data points. This paper elaborates on those metrics, further refining the data points to generate a measurable scale of safeguards cultures. We believe that this work could advance the IAEA's goals of implementing a safeguards system that is fully information driven, while strengthening confidence in its safeguards conclusions.

Frazar, Sarah L.; Mladineo, Stephen V.

2011-07-19T23:59:59.000Z

417

Natural Gas Ethanol Flex-Fuel  

E-Print Network [OSTI]

Natural Gas Propane Electric Ethanol Flex-Fuel Biodiesel Vehicle Buyer's Guide Clean Cities 2012 . . . . . . . . . . . . . . . . . . . . . . . . 4 About This Guide . . . . . . . . . . . . . . . . . . . 5 Compressed Natural Gas and emissions. Alternative fueling infrastructure is expanding in many regions, making natural gas, propane

418

ELECTRICITY AND NATURAL GAS DATA COLLECTION  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION HISTORICAL ELECTRICITY AND NATURAL GAS DATA COLLECTION Formsand of Power Plants Semi-Annual Report ..................................... 44 CEC-1306D UDC Natural Gas Tolling Agreement Quarterly Report.......................... 46 i #12;Natural Gas Utilities and Retailers

419

Economics of natural gas upgrading  

SciTech Connect (OSTI)

Natural gas could be an important alternative energy source in meeting some of the market demand presently met by liquid products from crude oil. This study was initiated to analyze three energy markets to determine if greater use could be made of natural gas or natural gas derived products and if those products could be provided on an economically competitive basis. The three markets targeted for possible increases in gas use were motor fuels, power generation, and the chemical feedstocks market. The economics of processes to convert natural gas to transportation fuels, chemical products, and power were analyzed. The economic analysis was accomplished by drawing on a variety of detailed economic studies, updating them and bringing the results to a common basis. The processes analyzed included production of methanol, MTBE, higher alcohols, gasoline, CNG, and LNG for the transportation market. Production and use of methanol and ammonia in the chemical feedstock market and use of natural gas for power generation were also assessed. Use of both high and low quality gas as a process feed stream was evaluated. The analysis also explored the impact of various gas price growth rates and process facility locations, including remote gas areas. In assessing the transportation fuels market the analysis examined production and use of both conventional and new alternative motor fuels.

Hackworth, J.H.; Koch, R.W.

1995-07-01T23:59:59.000Z

420

1INFORMS 10/04 RegularRegular Variation and Financial TimeVariation and Financial Time  

E-Print Network [OSTI]

financial time series IBM returns Multiplicative models for log-returns (GARCH, SV) Regular variation variation Stochastic recurrence equations (GARCH) Point process convergence Extremes and extremal index for volatility: (i) GARCH(p,q) process (General AutoRegressive Conditional Heteroscedastic

Note: This page contains sample records for the topic "measuring natural variations" 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

Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends  

SciTech Connect (OSTI)

Hydrogen is an attractive fuel source not only because it is abundant and renewable but also because it produces almost zero regulated emissions. Internal combustion engines fueled by compressed natural gas (CNG) are operated throughout a variety of industries in a number of mobile and stationary applications. While CNG engines offer many advantages over conventional gasoline and diesel combustion engines, CNG engine performance can be substantially improved in the lean operating region. Lean operation has a number of benefits, the most notable of which is reduced emissions. However, the extremely low flame propagation velocities of CNG greatly restrict the lean operating limits of CNG engines. Hydrogen, however, has a high flame speed and a wide operating limit that extends into the lean region. The addition of hydrogen to a CNG engine makes it a viable and economical method to significantly extend the lean operating limit and thereby improve performance and reduce emissions. Drawbacks of hydrogen as a fuel source, however, include lower power density due to a lower heating value per unit volume as compared to CNG, and susceptibility to pre-ignition and engine knock due to wide flammability limits and low minimum ignition energy. Combining hydrogen with CNG, however, overcomes the drawbacks inherent in each fuel type. Objectives of the current study were to evaluate the feasibility of using blends of hydrogen and natural gas as a fuel for conventional natural gas engines. The experiment and data analysis included evaluation of engine performance, efficiency, and emissions along with detailed in-cylinder measurements of key physical parameters. This provided a detailed knowledge base of the impact of using hydrogen/natural gas blends. A four-stroke, 4.2 L, V-6 naturally aspirated natural gas engine coupled to an eddy current dynamometer was used to measure the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions in a reciprocating four stroke cycle engine. The test matrix varied engine load and air-to-fuel ratio at throttle openings of 50% and 100% at equivalence ratios of 1.00 and 0.90 for hydrogen percentages of 10%, 20% and 30% by volume. In addition, tests were performed at 100% throttle opening, with an equivalence ratio of 0.98 and a hydrogen blend of 20% to further investigate CO emission variations. Data analysis indicated that the use of hydrogen/natural gas fuel blend penalizes the engine operation with a 1.5 to 2.0% decrease in torque, but provided up to a 36% reduction in CO, a 30% reduction in NOX, and a 5% increase in brake thermal efficiency. These results concur with previous results published in the open literature. Further reduction in emissions can be obtained by retarding the ignition timing.

Kirby S. Chapman; Amar Patil

2007-06-30T23:59:59.000Z

422

Synthesis of Polycyclic Natural Products  

SciTech Connect (OSTI)

With the continuous advancements in molecular biology and modern medicine, organic synthesis has become vital to the support and extension of those discoveries. The isolations of new natural products allow for the understanding of their biological activities and therapeutic value. Organic synthesis is employed to aid in the determination of the relationship between structure and function of these natural products. The development of synthetic methodologies in the course of total syntheses is imperative for the expansion of this highly interdisciplinary field of science. In addition to the practical applications of total syntheses, the structural complexity of natural products represents a worthwhile challenge in itself. The pursuit of concise and efficient syntheses of complex molecules is both gratifying and enjoyable.

Tuan Hoang Nguyen

2003-05-31T23:59:59.000Z

423

Natural gas monthly, August 1996  

SciTech Connect (OSTI)

This analysis presents the most recent data on natural gas prices, supply, and consumption from the Energy Information Administration (EIA). The presentation of the latest monthly data is followed by an update on natural gas markets. The markets section examines the behavior of daily spot and futures prices based on information from trade press, as well as regional, weekly data on natural gas storage from the American Gas Association (AGA). This {open_quotes}Highlights{close_quotes} closes with a special section comparing and contrasting EIA and AGA storage data on a monthly and regional basis. The regions used are those defined by the AGA for their weekly data collection effort: the Producing Region, the Consuming Region East, and the Consuming Region West. While data on working gas levels have tracked fairly closely between the two data sources, differences have developed recently. The largest difference is in estimates of working gas levels in the East consuming region during the heating season.

NONE

1996-08-01T23:59:59.000Z

424

Correlations in thermal comfort and natural wind  

E-Print Network [OSTI]

the average wind velocity and power spectrum exponent (?-of natural wind more accurately, power spectral analysisdata of natural wind versus the power spectral analysis

Kang, Ki-Nam; Song, Doosam; Schiavon, Stefano

2013-01-01T23:59:59.000Z

425

Jozsef Szilagyi School of Natural Resources  

E-Print Network [OSTI]

Mapping Jozsef Szilagyi School of Natural Resources scale, a linear equation is used to transform Szilagyi, Associate Professor, Research Hydrologist School of Natural Resources, UNL Evapotranspiration

Nebraska-Lincoln, University of

426

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar,...

427

Optimization of offshore natural gas field development.  

E-Print Network [OSTI]

?? In this thesis the target is to find the optimal development solution of an offshore natural gas field. Natural gas is increasing in importance… (more)

Johansen, Gaute Rannem

2011-01-01T23:59:59.000Z

428

Natural Gas Transmission and Distribution Module  

Gasoline and Diesel Fuel Update (EIA)

U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2011 Natural Gas Transmission and Distribution Module The NEMS Natural Gas Transmission and...

429

Natural Gas Transmission Pipeline Siting Act (Florida)  

Broader source: Energy.gov [DOE]

This Act establishes a centralized and coordinated permitting process for the location of natural gas transmission pipeline corridors and the construction and maintenance of natural gas...

430

Distributed Hydrogen Production from Natural Gas: Independent...  

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

Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Independent...

431

Natural Gas Transmission and Distribution Module  

Gasoline and Diesel Fuel Update (EIA)

U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Natural Gas Transmission and Distribution Module The NEMS Natural Gas Transmission and...

432

Piedmont Natural Gas- Commercial Equipment Efficiency Program  

Broader source: Energy.gov [DOE]

Piedmont Natural Gas offers rebates to commercial customers for purchasing and installing high-efficiency natural gas tankless water heaters. Customers on the 202-Small General Service Standard...

433

Natural Gas Monthly (NGM) - Energy Information Administration...  

U.S. Energy Information Administration (EIA) Indexed Site

oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. Natural Gas Exploration and reserves, storage, imports and exports,...

434

The Domestic Natural Gas Shortage in China.  

E-Print Network [OSTI]

?? This thesis analyzes the domestic shortage in the Chinese natural gas market. Both the domestic supply and demand of natural gas are growing fast… (more)

Guo, Ting

2014-01-01T23:59:59.000Z

435

Natural Gas Supply Vulnerability in Europe.  

E-Print Network [OSTI]

??Demand for natural gas has been increasing steadily the past few years. Most European countries depend heavily on natural gas imports due to insufficient gas… (more)

Gungor, Bekir

2013-01-01T23:59:59.000Z

436

Natural Gas and Hydrogen Infrastructure Opportunities: Markets...  

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

Natural Gas and Hydrogen Infrastructure Opportunities: Markets and Barriers to Growth Natural Gas and Hydrogen Infrastructure Opportunities: Markets and Barriers to Growth...

437

Natural Gas Transmission and Distribution Module This  

Gasoline and Diesel Fuel Update (EIA)

U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2012 Natural Gas Transmission and Distribution Module The NEMS Natural Gas Transmission and...

438

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines...

439

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Dresser Waukesha, June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Dresser Waukesha, June 2011 Presentation on Advanced Natural Gas Reciprocating...

440

Historical Natural Gas Annual - 1930 Through 2000  

U.S. Energy Information Administration (EIA) Indexed Site

2000 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

Note: This page contains sample records for the topic "measuring natural variations" 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

Outlook for North American Natural Gas  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

North American Natural Gas For LDC Natural Gas Forum November 11, 2014 | Toronto, Ontario, Canada By Adam Sieminski, Administrator U.S. Energy Information Administration The...

442

Nature Macmillan Publishers Ltd 1997 letters to nature  

E-Print Network [OSTI]

Univ. Press, New York, 1988). 3. Moya-Sola, S. & Kohler, M. Recent discoveries of Dryopithecus shed new light on evolution of great apes. Nature 365, 543­545 (1993). 4. Moya-Sola, S. & Kohler, M. New partial, and E. Delson, M. Kohler, S. Moya-Sola and D. Pilbeam for comments and advice. This work was sup

Utrecht, Universiteit

443

North American Natural Gas Markets  

SciTech Connect (OSTI)

This report summarizes die research by an Energy Modeling Forum working group on the evolution of the North American natural gas markets between now and 2010. The group's findings are based partly on the results of a set of economic models of the natural gas industry that were run for four scenarios representing significantly different conditions: two oil price scenarios (upper and lower), a smaller total US resource base (low US resource case), and increased potential gas demand for electric generation (high US demand case). Several issues, such as the direction of regulatory policy and the size of the gas resource base, were analyzed separately without the use of models.

Not Available

1989-02-01T23:59:59.000Z

444

North American Natural Gas Markets  

SciTech Connect (OSTI)

This report sunnnarizes the research by an Energy Modeling Forum working group on the evolution of the North American natural gas markets between now and 2010. The group's findings are based partly on the results of a set of economic models of the natural gas industry that were run for four scenarios representing significantly different conditions: two oil price scenarios (upper and lower), a smaller total US resource base (low US resource case), and increased potential gas demand for electric generation (high US demand case). Several issues, such as the direction of regulatory policy and the size of the gas resource base, were analyzed separately without the use of models.

Not Available

1988-12-01T23:59:59.000Z

445

Dealing with natural gas uncertainties  

SciTech Connect (OSTI)

The fuel of choice for generating new power is and will continue over the next two decades to be natural gas. It is the fuel of choice because it is plentiful, environmentally acceptable, and relatively inexpensive. This paper reports that gas reserves on the North American continent continue to be discovered in amounts that may keep the gas bubble inflated far longer than currently estimated. New gas transportation capacity is actively being developed to overcome the capacity bottlenecks and deliverability shortfalls. Natural gas prices will probably remain stable (with expected CPI-related increases) for the short run (2-4 years), and probably will be higher than CPI increases thereafter.

Clements, J.; Graeber, D. (J.R. Clements and Associates (US))

1991-04-01T23:59:59.000Z

446

Heat distribution by natural convection  

SciTech Connect (OSTI)

Natural convection between spaces in a building can play a major role in energy transfer. Two situations are investigated: convection through a single doorway into a remote room, and a convective loop in a two-story house with a south sunspace where a north stairway serves as the return path. A doorway-sizing equation is given for the single-door case. Detailed data are given from the monitoring of airflow in one two-story house and summary data are given for five others. Observations on the nature of the airflow and design guidelines are presented.

Balcomb, J.D.; Yamaguchi, K.

1983-01-01T23:59:59.000Z

447

letters to nature NATURE |VOL 406 |20 JULY 2000 |www.nature.com 293  

E-Print Network [OSTI]

lightning inferred from Schumann Resonance measurements. J. Geophys. Res. 103, 31775±31779 (1998). 29 measurements of global lightning. Q. J. R. Meteorol. Soc. 124, 1771±1773 (1998). 27. Schumann, W. O. U� ber die

Asmerom, Yemane

448

Phenotypic and genetic relationships between certain body measurements and milk production of first lactation Holsteins  

E-Print Network [OSTI]

2 The relative improvement expected to be gained by selection based 3olely on body measurement variables APPENDIX TABLES 3 Analysis cf variance to measure importance of in- breeding 4 Analysis of variance to measure importance of variation due... production and six body measurements 9 The within-year, within-sire correlations between nine variables measured on dam and daughter Page 21 LI 43 44 45 46 47 4 8 49 Phenotypic and Genetic Relationships Between Certain Body Measurements and Milk...

Johnson, Joseph Calbert

2013-10-04T23:59:59.000Z

449

The Local Variational Multiscale Method for Turbulence Simulation.  

SciTech Connect (OSTI)

Accurate and efficient turbulence simulation in complex geometries is a formidable chal-lenge. Traditional methods are often limited by low accuracy and/or restrictions to simplegeometries. We explore the merger of Discontinuous Galerkin (DG) spatial discretizationswith Variational Multi-Scale (VMS) modeling, termed Local VMS (LVMS), to overcomethese limitations. DG spatial discretizations support arbitrarily high-order accuracy on un-structured grids amenable for complex geometries. Furthermore, high-order, hierarchicalrepresentation within DG provides a natural framework fora prioriscale separation crucialfor VMS implementation. We show that the combined benefits of DG and VMS within theLVMS method leads to promising new approach to LES for use in complex geometries.The efficacy of LVMS for turbulence simulation is assessed by application to fully-developed turbulent channelflow. First, a detailed spatial resolution study is undertakento record the effects of the DG discretization on turbulence statistics. Here, the localhp[?]refinement capabilites of DG are exploited to obtain reliable low-order statistics effi-ciently. Likewise, resolution guidelines for simulating wall-bounded turbulence using DGare established. We also explore the influence of enforcing Dirichlet boundary conditionsindirectly through numericalfluxes in DG which allows the solution to jump (slip) at thechannel walls. These jumps are effective in simulating the influence of the wall commen-surate with the local resolution and this feature of DG is effective in mitigating near-wallresolution requirements. In particular, we show that by locally modifying the numericalviscousflux used at the wall, we are able to regulate the near-wall slip through a penaltythat leads to improved shear-stress predictions. This work, demonstrates the potential ofthe numerical viscousflux to act as a numerically consistent wall-model and this successwarrents future research.As in any high-order numerical method some mechanism is required to control aliasingeffects due to nonlinear interactions and to ensure nonlinear stability of the method. Inthis context, we evaluate the merits of two approaches to de-aliasing -- spectralfilteringand polynomial dealiasing. While both approaches are successful, polynomial-dealiasingis found to be better suited for use in large-eddy simulation. Finally, results using LVMSare reported and show good agreement with reference direct numerical simulation therebydemonstrating the effectiveness of LVMS for wall-bounded turbulence. This success pavesthe way for future applications of LVMS to more complex turbulentflows.3

Collis, Samuel Scott; Ramakrishnan, Srinivas

2005-05-01T23:59:59.000Z

450

Solar neutrino measurement in SK and larger detector a Kamioka observatory, ICRR, Univ. of Tokyo,  

E-Print Network [OSTI]

the solar neutrino ux but also its energy spectrum and time variations such as day-night and seasonal di#11). The advantages of the detector as a solar neutrino observation are the time variation measurements and very-I 2.1. Solar neutrino ux The observed solar neutrino ux in SK-I, whose energy threshold is 5.0Me

Tokyo, University of

451

Measurements of thermal accommodation coefficients.  

SciTech Connect (OSTI)

A previously-developed experimental facility has been used to determine gas-surface thermal accommodation coefficients from the pressure dependence of the heat flux between parallel plates of similar material but different surface finish. Heat flux between the plates is inferred from measurements of temperature drop between the plate surface and an adjacent temperature-controlled water bath. Thermal accommodation measurements were determined from the pressure dependence of the heat flux for a fixed plate separation. Measurements of argon and nitrogen in contact with standard machined (lathed) or polished 304 stainless steel plates are indistinguishable within experimental uncertainty. Thus, the accommodation coefficient of 304 stainless steel with nitrogen and argon is estimated to be 0.80 {+-} 0.02 and 0.87 {+-} 0.02, respectively, independent of the surface roughness within the range likely to be encountered in engineering practice. Measurements of the accommodation of helium showed a slight variation with 304 stainless steel surface roughness: 0.36 {+-} 0.02 for a standard machine finish and 0.40 {+-} 0.02 for a polished finish. Planned tests with carbon-nanotube-coated plates will be performed when 304 stainless-steel blanks have been successfully coated.

Rader, Daniel John; Castaneda, Jaime N.; Torczynski, John Robert; Grasser, Thomas W.; Trott, Wayne Merle

2005-10-01T23:59:59.000Z

452

Investigation of Naturally Occurring Radio Nuclides in Shir-kuh Granites  

SciTech Connect (OSTI)

One of the principle natural radiation resources is Granite which can be dangerous for human because of its radiations. Based on this fact, in this research we attempt to specify the activity amount of these natural radio nuclides, existing in Shir-kuh Granite of Yazd state. To specify the activity amount of this natural radio nuclides, it has been applied the measurement method of Gamma spectroscopy using high purity Germanium (HPGe) detector.

Mazarei, Mohammad Mehdi; Zarei, Mojtaba [Department of Science, Bushehr Branch, Islamic Azad University, City of Aalishahr, Bushehr Province, Iran P.O.Box: 7519619555 (Iran, Islamic Republic of)

2011-12-26T23:59:59.000Z

453

Wind Engineering & Natural Disaster Mitigation  

E-Print Network [OSTI]

Wind Engineering & Natural Disaster Mitigation For more than 45 years, Western University has been internationally recognized as the leading university for wind engineering and wind- related research. Its of environmental disaster mitigation, with specific strengths in wind and earthquake research. Boundary Layer Wind

Denham, Graham

454

NATURAL RESOURCES CONSERVATION Environmental Conservation  

E-Print Network [OSTI]

NATURAL RESOURCES CONSERVATION Environmental Conservation Fall Semester Spring Semester Freshman elective options ­ RES-ECON 262, 263 9/13 #12;***For the Environmental Conservation concentration, students must complete 18 additional conservation and/or environmentally-related credits in a curriculum plan

Schweik, Charles M.

455

NATURAL RESOURCES CONSERVATION ENVIRONMENTAL CONSERVATION  

E-Print Network [OSTI]

NATURAL RESOURCES CONSERVATION ENVIRONMENTAL CONSERVATION For students entering after 8 for the major = 77-78 credits, plus an additional 18 credits in conservation/environmentally related courses Completion of a plan that incorporates 18 additional credits in conservation or environmentally related

Massachusetts at Amherst, University of

456

The outlook for natural gas  

SciTech Connect (OSTI)

The proceedings of the Institute of Gas Technology`s Houston Conference on the Outlook for Natural Gas held October 5, 1993 are presented. A separate abstract was prepared for each paper for inclusion in the Energy Science and Technology Database.

NONE

1993-12-31T23:59:59.000Z

457

Natural Language Processing Methods for  

E-Print Network [OSTI]

Natural Language Processing Methods for Automatic Illustration of Text Richard Johansson Licentiate of Language Technology #12;ISSN 1652-4691 Licentiate Thesis 4, 2006 LU-CS-LIC:2006-1 Thesis submitted for partial fulfilment of the degree of licentiate. Department of Computer Science Lund Institute

458

1111 Emulating Natural Forest Landscape  

E-Print Network [OSTI]

1111 1111 Emulating Natural Forest Landscape Disturbances Concepts and Applications Edited by AJITH forest landscape disturbances: concepts and applications / edited by Ajith H. Perera, LisaJ. Buse, THOMAS A. SPIES , and ETSUKO NONAKA Forest landscapes in the Oregon Coast Range have changed considerably

Wright, Dawn Jeannine

459

Natural gas monthly, March 1999  

SciTech Connect (OSTI)

This issue of the Natural Gas Monthly contains estimates for March 1999 for many natural gas data series at the national level. Estimates of national natural gas prices are available through December 1998 for most series. Highlights of the data contained in this issue are listed below. Preliminary data indicate that the national average wellhead price for 1998 declined to 16% from the previous year ($1.96 compared to $2.32 per thousand cubic feet). At the end of March, the end of the 1998--1999 heating season, the level of working gas in underground natural gas storage facilities is estimated to be 1,354 billion cubic feet, 169 billion cubic feet higher than at the end of March 1998. Gas consumption during the first 3 months of 1999 is estimated to have been 179 billion cubic feet higher than in the same period in 1998. Most of this increase (133 billion cubic feet) occurred in the residential sector due to the cooler temperatures in January and February compared to the same months last year. According to the National Weather Service, heating degree days in January 1999 were 15% greater than the previous year while February recorded a 5% increase.

NONE

1999-03-01T23:59:59.000Z

460

Natural gas monthly, January 1997  

SciTech Connect (OSTI)

This publication, the Natural Gas Monthly, presents the most recent data on natural gas supply, consumption, and prices from the Energy Information Administration (EIA). Of special interest in this issue are two articles summarizing reports recently published by EIA. The articles are {open_quotes}Natural Gas Productive Capacity{close_quotes} and {open_quotes}Outlook for Natural Gas Through 2015,{close_quotes} both of which precede the {open_quotes}Highlights{close_quotes} section. With this issue, January 1997, changes have been made to the format of the Highlights section and to several of the tabular and graphical presentations throughout the publication. The changes to the Highlights affect the discussion of developments in the industry and the presentation of weekly storage data. An overview of the developments in the industry is now presented in a brief summary followed by specific discussions of supply, end-use consumption, and prices. Spot and futures prices are discussed as appropriate in the Price section, together with wellhead and consumer prices.

NONE

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

SUMMER TO SUMMER VARIATIONS IN INDOOR RADON  

E-Print Network [OSTI]

Indoor radon concentrations show a strong dependence on weather. winter tends to be associated with higher than average indoor radon, and summer with lower than average. However, in northern Virginia, the summer of 1988 was wetter than the summer of 1987. Consequently, the regional indoor radon during the summer of 1988 was about 30 % higher than during the summer of 1987, and indoor radon during the summer of 1988 actually exceeded the indoor radon level of the 1987-88 winter. Evidently care must be taken when attempting to estimate regional indoor radon concentrations, and homesite risk estimates should rely on long-term measurement intervals. Key word index: summer precipitation, soil capping, alpha-track radon monitors, home heating system, radon and radon progeny,

Paul Dibenenetto; Douglas G. Mose; George W. Mushrush

462

Water oxidation reaction in natural and artificial photosynthetic systems  

SciTech Connect (OSTI)

Understanding the structure and mechanism of water oxidation catalysts is an essential component for developing artificial photosynthetic devices. In the natural water oxidation catalyst, the geometric and electronic structure of its inorganic core, the Mn{sub 4}CaO{sub 5} cluster, has been studied by spectroscopic and diffraction measurements. In inorganic systems, metal oxides seem to be good candidates for water oxidation catalysts. Understanding the reaction mechanism in both natural and oxide-based catalysts will helpin further developing efficient and robust water oxidation catalysts.

Yano, Junko; Yachandra, Vittal [Physical Biosciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720 (United States)

2013-12-10T23:59:59.000Z

463

Near field optical probe for critical dimension measurements  

DOE Patents [OSTI]

A resonant planar optical waveguide probe for measuring critical dimensions on an object in the range of 100 nm and below is disclosed. The optical waveguide includes a central resonant cavity flanked by Bragg reflector layers with input and output means at either end. Light is supplied by a narrow bandwidth laser source. Light resonating in the cavity creates an evanescent electrical field. The object with the structures to be measured is translated past the resonant cavity. The refractive index contrasts presented by the structures perturb the field and cause variations in the intensity of the light in the cavity. The topography of the structures is determined from these variations. 8 figs.

Stallard, B.R.; Kaushik, S.

1999-05-18T23:59:59.000Z

464

Illicit Trafficking of Natural Radionuclides  

SciTech Connect (OSTI)

Natural radionuclides have been subject to trafficking worldwide, involving natural uranium ore (U 238), processed uranium (yellow cake), low enriched uranium (<20% U 235) or highly enriched uranium (>20% U 235), radium (Ra 226), polonium (Po 210), and natural thorium ore (Th 232). An important prerequisite to successful illicit trafficking activities is access to a suitable logistical infrastructure enabling an undercover shipment of radioactive materials and, in case of trafficking natural uranium or thorium ore, capable of transporting large volumes of material. Covert en route diversion of an authorised uranium transport, together with covert diversion of uranium concentrate from an operating or closed uranium mines or mills, are subject of case studies. Such cases, involving Israel, Iran, Pakistan and Libya, have been analyzed in terms of international actors involved and methods deployed. Using international incident data contained in the Database on Nuclear Smuggling, Theft and Orphan Radiation Sources (DSTO) and international experience gained from the fight against drug trafficking, a generic Trafficking Pathway Model (TPM) is developed for trafficking of natural radionuclides. The TPM covers the complete trafficking cycle, ranging from material diversion, covert material transport, material concealment, and all associated operational procedures. The model subdivides the trafficking cycle into five phases: (1) Material diversion by insider(s) or initiation by outsider(s); (2) Covert transport; (3) Material brokerage; (4) Material sale; (5) Material delivery. An Action Plan is recommended, addressing the strengthening of the national infrastructure for material protection and accounting, development of higher standards of good governance, and needs for improving the control system deployed by customs, border guards and security forces.

Friedrich, Steinhaeusler; Lyudmila, Zaitseva [Div. of Physics and Biophysics, University of Salzburg Hellbrunnerstr. 34, A 5020 Salzburg (Austria)

2008-08-07T23:59:59.000Z

465

Anthropogenic and Natural Emissions of Mercury (Hg) in the northeastern United Jeffrey MacAdam Sigler  

E-Print Network [OSTI]

Abstract Anthropogenic and Natural Emissions of Mercury (Hg) in the northeastern United States impact may depend on the emission rate. Anthropogenic Hg emissions in the United States are poorly characterized. Natural Hg emissions are poorly understood worldwide, due to lack of data or measurement systems

Lee, Xuhui

466

Moments of perfection : a study of natural lighting in the Church of Santo Spirito  

E-Print Network [OSTI]

Reliance on natural lighting in the Renaissance is put into context through the exploration of religious light symbolism and the explanation of the dependence on the solar path to measure the passage of time. Through ...

Wyckoff, Laura Ellen

1984-01-01T23:59:59.000Z

467

Temporal Geochemical Variations In Volatile Emissions From Mount...  

Open Energy Info (EERE)

Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Usa, 1980-1994 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

468

On compensation of systematic manufacturing variations in physical design  

E-Print Network [OSTI]

2004. P. Gupta, F. -L. Heng, M. Lavin, “Merits of CellwiseManufacturing, 2004. F. -L. Heng, P. Gupta, R. L. Gordon, K.P. Gupta and F. -L. Heng, “Toward a Systematic-Variation

Gupta, Puneet

2007-01-01T23:59:59.000Z

469

Fast high-order variation-aware IC interconnect analysis  

E-Print Network [OSTI]

Interconnects constitute a dominant source of circuit delay for modern chip designs. The variations of critical dimensions in modern VLSI technologies lead to variability in interconnect performance that must be fully accounted for in timing...

Ye, Xiaoji

2009-05-15T23:59:59.000Z

470

Essays on variational inequalities and competitive supply chain models  

E-Print Network [OSTI]

In the first part of the thesis we combine ideas from cutting plane and interior point methods to solve variational inequality problems efficiently. In particular, we introduce "smarter" cuts into two general methods for ...

Zaretsky, M. (Marina)

2004-01-01T23:59:59.000Z

471

Diurnal Precipitation Variations in South-Central New Mexico  

E-Print Network [OSTI]

Orographic forcing of diurnal precipitation variations in south-central New Mexico is examined. Harmonic analysis reveals a strong diurnal cycle in precipitation frequency at all stations studied. In addition, relatively ...

Tucker, Donna F.

1993-07-01T23:59:59.000Z

472

Variational principle for optimal accelerated neutralized flow A. Fruchtman  

E-Print Network [OSTI]

Variational principle for optimal accelerated neutralized flow A. Fruchtman Holon Academic Institute of Technology, 52 Golomb Street, P.O. Box 305, Holon 58102, Israel N. J. Fisch Princeton Plasma

473

Parasites and life history variation in a wild mammal   

E-Print Network [OSTI]

The purpose of this thesis is to investigate associations between parasite infection and host life-history variation in the wild Soay sheep population of the islands of St Kilda, NW Scotland. Studying host-parasite ...

Hayward, Adam David

2011-11-24T23:59:59.000Z

474

Evaluating metalorganic frameworks for natural gas storage  

E-Print Network [OSTI]

suited for light-duty passenger vehicles. For instance, compressed natural gas (CNG) requires expensive

475

cleanenergyfuels.com Natural Gas Solutions  

E-Print Network [OSTI]

1 cleanenergyfuels.com Natural Gas Solutions for Transportation December 7, 2012 #12;2 cleanenergyfuels.com Compressed Natural Gas (CNG) Taxis Airport Vehicles Transit Buses Leading Provider of Natural Gas As a Transportation Fuel About Clean Energy Liquefied Natural Gas (LNG) Port Trucking LNG Station

Minnesota, University of

476

Mathematical models of natural gas consumption  

E-Print Network [OSTI]

Mathematical models of natural gas consumption Kristian Sabo, Rudolf Scitovski, Ivan of natural gas consumption Kristian Sabo, Rudolf Scitovski, Ivan Vazler , Marijana Zeki-Susac ksabo of natural gas consumption hourly fore- cast on the basis of hourly movement of temperature and natural gas

Scitovski, Rudolf

477

Natural gas prices: Rhyme or reason  

SciTech Connect (OSTI)

Problems in the establishment of natural gas prices are outlined. The tropics discussed include: US average natural gas prices; US average natural gas prices; US average fuel oil prices; and US average electric utility natural gas T and D margin in dollars Mcf.

Tucker, L.L.

1995-12-31T23:59:59.000Z

478

Natural and Multi-Natural Inflation in Axion Landscape  

E-Print Network [OSTI]

We propose a landscape of many axions, where the axion potential receives various contributions from shift symmetry breaking effects. We show that the existence of the axion with a super-Planckian decay constant is very common in the axion landscape for a wide range of numbers of axions and shift symmetry breaking terms, because of the accidental alignment of axions. The effective inflation model is either natural or multi-natural inflation in the axion landscape, depending on the number of axions and the shift symmetry breaking terms. The tension between BICEP2 and Planck could be due to small modulations to the inflaton potential or steepening of the potential along the heavy axions after the tunneling. The total duration of the slow-roll inflation our universe experienced is not significantly larger than $60$ if the typical height of the axion potentials is of order $(10^{16-17}{\\rm \\,GeV})^4$.

Tetsutaro Higaki; Fuminobu Takahashi

2014-07-16T23:59:59.000Z

479

Bovine SLC11A1: genomic sequence variation and functional analysis in cattle naturally resistant and susceptible to bovine brucellosis  

E-Print Network [OSTI]

. In this study I set out to identify mutations in the genomic complement of the gene that may be associated with resistance or susceptibility to bovine brucellosis, and to determine if the microsatellite length polymorphism in the 3'UTR of bovine SLC11A1...

Schutta, Christopher John

2009-06-02T23:59:59.000Z

480

VARIATIONS OF THE 10 mum SILICATE FEATURES IN THE ACTIVELY ACCRETING T TAURI STARS: DG Tau AND XZ Tau  

SciTech Connect (OSTI)

Using the Infrared Spectrograph aboard the Spitzer Space Telescope, we observed multiple epochs of 11 actively accreting T Tauri stars in the nearby Taurus-Auriga star-forming region. In total, 88 low-resolution mid-infrared spectra were collected over 1.5 years in Cycles 2 and 3. The results of this multi-epoch survey show that the 10 mum silicate complex in the spectra of two sources-DG Tau and XZ Tau-undergoes significant variations with the silicate feature growing both weaker and stronger over month- and year-long timescales. Shorter timescale variations on day- to week-long timescales were not detected within the measured flux errors. The time resolution coverage of this data set is inadequate for determining if the variations are periodic. Pure emission compositional models of the silicate complex in each epoch of the DG Tau and XZ Tau spectra provide poor fits to the observed silicate features. These results agree with those of previous groups that attempted to fit only single-epoch observations of these sources. Simple two-temperature, two-slab models with similar compositions successfully reproduce the observed variations in the silicate features. These models hint at a self-absorption origin of the diminution of the silicate complex instead of a compositional change in the population of emitting dust grains. We discuss several scenarios for producing such variability including disk shadowing, vertical mixing, variations in disk heating, and disk wind events associated with accretion outbursts.

Bary, Jeffrey S. [Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, NY 13346 (United States); Leisenring, Jarron M.; Skrutskie, Michael F., E-mail: jbary@colgate.ed, E-mail: jml2u@virginia.ed, E-mail: mfs4n@virginia.ed [Department of Astronomy, University of Virginia, P.O. Box 400325 Charlottesville, VA 22904-4325 (United States)

2009-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "measuring natural variations" 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

On Computing Multiple Solutions of Nonlinear PDEs Without Variational Structure  

E-Print Network [OSTI]

ON COMPUTING MULTIPLE SOLUTIONS OF NONLINEAR PDES WITHOUT VARIATIONAL STRUCTURE A Dissertation by CHANGCHUN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree... of DOCTOR OF PHILOSOPHY May 2012 Major Subject: Mathematics ON COMPUTING MULTIPLE SOLUTIONS OF NONLINEAR PDES WITHOUT VARIATIONAL STRUCTURE A Dissertation by CHANGCHUN WANG Submitted to the O ce of Graduate Studies of Texas A&M University in partial...

Wang, Changchun

2012-07-16T23:59:59.000Z

482

Ion implanted step recovery diodes - influence of material parameter variations  

E-Print Network [OSTI]

ION IMPLANTED STEP RECOVERY DIODES ? INFLUENCE OF MATERIAL PARAMETER VARIATIONS A Thesis by THOMAS MICHAEL MOSMAN Submitted to the Craduate College of Texas ARM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1974 Major Subject: Electrical Engineering ION IMPLANTED STEP RECOVERY DIODES ? INFLUENCE OF MATERIAL PARAMETER VARIATIONS A Thesis by THOMAS MICHAEL MOSMAN Approved as to style and content by: (Chairman of Committee) (Head f...

Mosman, Thomas Michael

2012-06-07T23:59:59.000Z

483

Natural Gas Multi-Year Program Plan  

SciTech Connect (OSTI)

This document comprises the Department of Energy (DOE) Natural Gas Multi-Year Program Plan, and is a follow-up to the `Natural Gas Strategic Plan and Program Crosscut Plans,` dated July 1995. DOE`s natural gas programs are aimed at simultaneously meeting our national energy needs, reducing oil imports, protecting our environment, and improving our economy. The Natural Gas Multi-Year Program Plan represents a Department-wide effort on expanded development and use of natural gas and defines Federal government and US industry roles in partnering to accomplish defined strategic goals. The four overarching goals of the Natural Gas Program are to: (1) foster development of advanced natural gas technologies, (2) encourage adoption of advanced natural gas technologies in new and existing markets, (3) support removal of policy impediments to natural gas use in new and existing markets, and (4) foster technologies and policies to maximize environmental benefits of natural gas use.

NONE

1997-12-01T23:59:59.000Z

484

The seasonal variation of the zonal velocity of the Atlantic Equatorial Undercurrent  

E-Print Network [OSTI]

measurements and. the possibility of considerable nonseasonal variation. The zonal current speed. at, the sea surface near the equator 0 0 east of 35 -30 W appears to have maximums in February-Nay and September-Octo'her and minimums in June... ~ ~ 22 23 'I 25 26 27 at at 30 31 e ~ 34 m/s ~ ~ ~ 35 37 Depth of the core (m) 0 cm/s isotach depth directly above the coze (m) 20 cm/s isotaoh depth directly below the core (m) 0 cm/s isotach depth diz'ectly below the core (m) Thickness...

Olling, Charles Randolph

1977-01-01T23:59:59.000Z

485

Solar internal rotation rate and the latitudinal variation of the tachocline  

E-Print Network [OSTI]

A new set of accurately measured frequencies of solar oscillations are used to infer the rotation rate inside the Sun, as a function of radial distance as well as latitude. We have adopted a regularized least squares technique with iterative refinement for both 1.5D inversion using the splitting coefficients and 2D inversion using individual m splittings. The inferred rotation rate agrees well with earlier estimates showing a shear layer just below the surface and another one around the base of the convection zone. The tachocline or the transition layer where the rotation rate changes from differential rotation in the convection zone to almost latitudinally independent rotation rate in the radiative interior is studied in detail. No compelling evidence for any latitudinal variation in position and width of tachocline is found though it appears that the tachocline probably shifts to slightly larger radial distance at higher latitudes and possibly becomes thicker also. However, these variations are within the estimated errors and more accurate data would be needed to make a definitive statement about latitudinal variations.

H. M. Antia; Sarbani Basu; S. M. Chitre

1997-09-10T23:59:59.000Z

486

letters to nature NATURE |VOL 403 |3 FEBRUARY 2000 |www.nature.com 521  

E-Print Network [OSTI]

. M. The properties and the nature of ball lightning. Phys. Rep. 152, 177±226 (1987). 2. Barry, J. D, Optics of Small Particles, Interfaces and Surfaces (eds Hummel, R. E. & Wissmann, P.) 103±127 (CRC, Boca. J. Appl. Phys. 62, 3416±3423 (1987). 17. Jacobson, N. S. Corrosion of silicon-based ceramics

Sarpeshkar, Rahul

487

Local Leaders: Respond to Natural Gas Disruptions | Department...  

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

Natural Gas Disruptions Local Leaders: Respond to Natural Gas Disruptions Local Leaders: Respond to Natural Gas Disruptions Because natural gas is distributed through underground...

488

Assessing the Accuracy of Contact Angle Measurements for Sessile Drops on Liquid-Repellent Surfaces  

E-Print Network [OSTI]

Gravity-induced sagging can amplify variations in goniometric measurements of the contact angles of sessile drops on super-liquid-repellent surfaces. The very large value of the effective contact angle leads to increased ...

Srinivasan, Siddarth

489

Natural gas cavern storage regulation  

SciTech Connect (OSTI)

Investigation of an incident at an LPG storage facility in Texas by U.S. Department of Transportation resulted in recommendation that state regulation of natural gas cavern storage might be improved. Interstate Oil & Gas Compact Commission has established a subcommittee to analyze the benefits and risks associated with natural gas cavern storage, and to draft a regulation model which will suggest engineering and performance specifications. The resulting analysis and regulatory language will be reviewed by I.O.G.C.C., and if approved, distributed to member states (including New York) for consideration. Should the states desire assistance in modifying the language to reflect local variables, such as policy and geology, I.O.G.C.C. may offer assistance. The proposed presentation will review the I.O.G.C.C. product (if published at that date), and discuss implications of its application in New York.

Heneman, H.

1995-09-01T23:59:59.000Z

490

Teaching About Nature's Nuclear Reactors  

E-Print Network [OSTI]

Naturally occurring nuclear reactors existed in uranium deposits on Earth long before Enrico Fermi built the first man-made nuclear reactor beneath Staggs Field in 1942. In the story of their discovery, there are important lessons to be learned about scientific inquiry and scientific discovery. Now, there is evidence to suggest that the Earth's magnetic field and Jupiter's atmospheric turbulence are driven by planetary-scale nuclear reactors. The subject of planetocentric nuclear fission reactors can be a jumping off point for stimulating classroom discussions about the nature and implications of planetary energy sources and about the geomagnetic field. But more importantly, the subject can help to bring into focus the importance of discussing, debating, and challenging current thinking in a variety of areas.

Herndon, J M

2005-01-01T23:59:59.000Z

491

Microbial Flocculant for Nature Soda  

SciTech Connect (OSTI)

Microbial flocculant for nature soda has been studied. Lactobacillus TRJ21, which was able to produce an excellent biopolymer flocculant for nature soda, was obtained in our lab. The microbial flocculant was mainly produced when the bacteria laid in stationary growth phase. Fructose or glucose, as carbon sources, were more favorable for the bacterial growth and flocculant production. The bacteria was able to use ammonium sulfate or Urea as nitrogen to produce flocculant, but was not able to use peptone effectively. High C/N ratio was more favorable to Lactobacillus TRJ21 growth and flocculant production than low C/N ratio. The biopolymer flocculant was mainly composed of polysaccharide and protein with a molecular weight 1.38x106 by gel permeation chromatography. It was able to be easily purified from the culture medium by acetone. Protein in the flocculant was tested for the flocculating activity ingredient by heating the flocculant.

Qin, Peiyong; Zhang, Tong; Chen, Cuixian

2004-03-31T23:59:59.000Z

492

A slotted orifice plate used as a flow measurement device  

E-Print Network [OSTI]

The standard orifice plate is used extensively by the natural gas industry for the metering of fuel. Because of the costs associated with errors in flow measurement inherent with the use of a standard orifice plate, any improvements upon...

Macek, Michael Lee

2012-06-07T23:59:59.000Z

493

iCalm: Measuring electrodermal activity in almost any setting  

E-Print Network [OSTI]

The iCalm sensor is a wireless, wearable, washable wristband that can measure electrodermal activity and physical activity in almost any natural setting. This platform has many applications including health monitoring for ...

Hedman, Elliott Bruce

494

Novel method for evaluation of natural dyes in DSSC  

SciTech Connect (OSTI)

Dye sensitized Solar Cell (DSSC) is presently centered on Ruthenium based dyes. Recent research is diverted to explore the potential of natural dyes in replacing the conventional dyes. In this work we have chosen few natural dyes, which when coated on TiO{sub 2} leads to increase in absorption capacity of TiO{sub 2}. Co-relation of absorption and electrochemical properties of natural dyes gives a scientific insight of the probable performance of a dye, even without fabricating a cell. We have tried to compare this predictions based on HOMO-LUMO energy levels with the real cell performance. Measurements of cell parameters suggest that there is scope for further research in this area.

Lakshmi, M.; Kavitha, S. [Department of Physics, Mercy College, Calicut University, Palakkad, 687006, Kerala (India); Paul, Mercyleena [Department of Chemistry, Mercy College, Calicut University, Palakkad, 687006, Kerala (India)

2014-10-15T23:59:59.000Z

495

Axion Landscape and Natural Inflation  

E-Print Network [OSTI]

Multiple axions form a landscape in the presence of various shift symmetry breaking terms. Eternal inflation populates the axion landscape, continuously creating new universes by bubble nucleation. Slow-roll inflation naturally takes place after the tunneling event, because a very flat direction with a super-Planckian decay constant arises due to the alignment mechanism. We study the vacuum structure as well as possible inflationary dynamics in the axion landscape scenario, and find that the inflaton dynamics is given by either natural or multi-natural inflation. In the limit of large decay constant, it is approximated by the quadratic chaotic inflation, which however is disfavored if there is a pressure toward shorter duration of inflation. If the spectral index and the tensor-to-scalar ratio turn out to be different from the quadratic chaotic inflation, there might be observable traces of the bubble nucleation. Also, the existence of small modulations to the inflaton potential is a common feature in the axion landscape, which generates a sizable and almost constant running of the scalar spectral index over CMB scales.

Tetsutaro Higaki; Fuminobu Takahashi

2014-10-10T23:59:59.000Z

496

Thermal performance of the Brookhaven natural thermal storage house  

SciTech Connect (OSTI)

In the Brookhaven natural thermal storage house, an energy-efficient envelope, passive solar collectors, and a variety of energy conservation methods are incorporated. The thermal characteristics of the house during the tested heating season are evaluated. Temperature distributions at different zones are displayed, and the effects of extending heating supply ducts only to the main floor and heating return ducts only from the second floor are discussed. The thermal retrievals from the structure and the passive collectors are assessed, and the total conservation and passive solar contributions are outlined. Several correlation factors relating these thermal behaviors are introduced, and their diurnal variations are displayed. Finally, the annual energy requirements, and the average load factors are analyzed and discussed.

Ghaffari, H.T.; Jones, R.F.

1981-01-01T23:59:59.000Z

497

Structure and Origins of Trends in Hydrological Measures over the western United States  

SciTech Connect (OSTI)

This study examines, at 1/8 degree spatial resolution, the geographic structure of observed trends in key hydrologically relevant variables across the western United States (U.S.) over the period 1950-1999, and investigates whether these trends are statistically significantly different from trends associated with natural climate variations. A number of variables were analyzed, including late winter and spring temperature, winter-total snowy days as a fraction of winter-total wet days, 1st April Snow Water Equivalent (SWE) as a fraction of October through March precipitation total (P{sub ONDJFM}), and seasonal (January-February-March; JFM) accumulated runoff as a fraction of water year accumulated runoff. The observed changes were compared to natural internal climate variability simulated by an 850-year control run of the CCSM3-FV climate model, statistically downscaled to a 1/8 degree grid using the method of Constructed Analogues. Both observed and downscaled temperature and precipitation data were then used to drive the Variable Infiltration Capacity (VIC) hydrological model to obtain the hydrological variables analyzed in this study. Large trends (magnitudes found less than 5% of the time in the long control run) are common in the observations, and occupy substantial part of the area (37-42%) over the mountainous western U.S. These trends are strongly related to the large scale warming that appears over 89% of the domain. The strongest changes in the hydrologic variables, unlikely to be associated with natural variability alone, have occurred at medium elevations (750 m to 2500 m for JFM runoff fractions and 500 m-3000 m for SWE/PONDJFM) where warming has pushed temperatures from slightly below to slightly above freezing. Further analysis using the data on selected catchments across the simulation domain indicated that hydroclimatic variables must have changed significantly (at 95% confidence level) over at least 45% of the total catchment area to achieve a detectable trend in measures accumulated to the catchment scale.

Das, T; Hidalgo, H G; Dettinger, M D; Cayan, D R; Pierce, D W; Bonfils, C; Barnett, T P; Bala, G; Mirin, A

2008-08-22T23:59:59.000Z

498

Variation of calibration constant of alpha track detectors with respect to altitude  

E-Print Network [OSTI]

awareness of their existence dates, at most, to about the turn of the century, when both X-rays and natural radioactivity were discovered. The possibility of cancer induction due to indoor radon exposure has been attracting increasing attention... include scintillation detectors, thermoluminescent dosimeters and semiconductor detectors. None of these devices can be called entirely passive(i. e. no mechanical or electrical components) and few of them can measure a long time integrated signal...

Vasudevan, Latha

1991-01-01T23:59:59.000Z

499

EIA - Natural Gas Pipeline Network - Natural Gas Transportation Corridors  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed NewcatalystNeutron scattering characterizesAnalysis &MapMajor Natural

500

EIA - Natural Gas Pipeline Network - Generalized Natural Gas Pipeline  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623Primary MetalsOriginCapacity Design