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Note: This page contains sample records for the topic "moderate population growth" 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.


1

BIOTIC INFLUENCES AFFECTING POPULATION GROWTH OF  

E-Print Network [OSTI]

of Chlorella and Nitz8chia _ Growth curve and division rate of Chlorella _ Growth curve and division rate in conditioned media _ Inhibitory effect o~ Chlorella of Nitz8chia-conditioned medium _ Inhibitory effect on Nitz8chia of Chlorella-condit,ioned medium _ Inhibitory effects of filtrate from conditioned media

2

The importance of population growth in future commercial energy consumption  

SciTech Connect (OSTI)

This paper estimates the contribution of population growth to commercial energy consumption, which is considered a major cause of increases in air pollution and greenhouse gases. This paper first summarizes some of the recent estimates of future energy use developed by well-known models. It then develops several alternative scenarios that use different assumptions about population growth and energy use per capita for 122 countries for the years 2020 and 2050. It calculates the relative contribution of population growth to the change in total commercial energy use and demonstrates the sensitivity of the results to different assumptions. Individual country data are separately summed to totals for more-developed countries (MDCs) and less-developed countries (LDCs). Under a business as usual scenario for both MDCs and LDCs, population growth is important, but not the most important factor, in future increases in global energy consumption. Analysis of other scenarios shows that while slower population growth always contributes to a slowing of future global energy consumption, such changes are not as effective as reductions in per capita commercial energy use. Calculations on a global basis are made in two ways: from global aggregates and by summing individual country data. Comparison of the results shows that the first method is misleading because of the heterogeneity of population growth rates and energy consumption rates of individual countries. The tentative conclusions reached in this paper are only small pieces of a much larger puzzle. More work needs to be done to better understand the dynamics of these relationships before the analysis is extended to the broader questions of population growth and environmental change.

Kolsrud, G. [Congress, Washington, DC (United States); Torrey, B.B. [Bureau of the Census, Washington, DC (United States)

1992-12-31T23:59:59.000Z

3

Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary of Theory and Evidence  

E-Print Network [OSTI]

Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary: This note examines the link between population and per capita economic growth in Uganda. After showing that Uganda has one of the highest population growth rates in the world which, due to the inherent demographic

Krivobokova, Tatyana

4

Growth of geologic fractures into large-strain populations: review of nomenclature, subcritical crack growth, and some implications  

E-Print Network [OSTI]

Growth of geologic fractures into large-strain populations: review of nomenclature, subcritical at the earliest stages of fracture nucleation). Slow, subcritical crack growth in rock is associated

5

Output Growth and Its Volatility: The Gold Standard through the Great Moderation  

E-Print Network [OSTI]

of real GDP growth and some form of a generalized autoregressive conditional heteroskedasticity (GARCH GARCH or exponential GARCH (EGARCH) process, capturing the movement in volatility. The neglect persistence in the conditional volatility or integrated GARCH (IGARCH). That is, typically all persistence

Ahmad, Sajjad

6

Population Growth & Issues Can we feed the growing world  

E-Print Network [OSTI]

Local and global weather change (global warming) Ozone depletion Can we feed world population? How population? Every six seconds a child dies because of hunger and related causes; 10.9 million children under five die in developing countries each year. Malnutrition and hunger-related diseases cause 60

Huang, Youqin

7

GROWTH OF A POPULATION OF BACTERIA IN A DYNAMICAL HOSTILE ENVIRONMENT  

E-Print Network [OSTI]

´EGINE MARCHAND Abstract. We study the growth of a population of bacteria in a dynami- cal hostile environment´EGINE MARCHAND · We put an oriented edge from (z1, n1) to (z2, n2) if and only if n2 = n1 + 1 and z2 - z1 1 1

8

Root Growth and Yield of Differing Alfalfa Rooting Populations under Increasing Salinity and Zero Leaching  

E-Print Network [OSTI]

Root Growth and Yield of Differing Alfalfa Rooting Populations under Increasing Salinity and Zero of alfalfa under irrigation extended to 2.5 m (Dud- ley et al., 1994). It may be advantageous for deep-rootedAccumulation of salinity in the root zone can be detrimental to crops such as alfalfa to exploit the lower average

Smith, Steven E.

9

Project Overview This project is evaluating how climate change, population growth, and  

E-Print Network [OSTI]

for plugging in hydrological, ecological, and socio-economic process models, "agents" who can make parcelProject Overview This project is evaluating how climate change, population growth, and economic? Model the Willamette water system. The project will develop or adapt hydrologic, socio-economic

10

FORAGE FISH POPULATIONS AND GROWTH OF MUSKELLUNGE IN A SOUTH DAKOTA POWER PLANT COOLING RESERVOIR  

E-Print Network [OSTI]

FORAGE FISH POPULATIONS AND GROWTH OF MUSKELLUNGE IN A SOUTH DAKOTA POWER PLANT COOLING RESERVOIR;ACKNOWLEBGEMENTS I would like to thank the following people for making this study possible: Dr. R. L. Applegate. Scaletfor reviewing the manuscript; R. G. Johnson and N. N. Thomas, Otter Tail Power Co., provided access

11

Impacts of Climate Change and Population Growth on Water Stress Becky Witte  

E-Print Network [OSTI]

Impacts of Climate Change and Population Growth on Water Stress by Becky Witte Master's Student shift toward urban areas, current water and wastewater treatment systems may not be adequate to address climate change, energy consumption, pollution, and impacts of human activities on ecosystems. Addressing

Fay, Noah

12

Age, Growth, and Population Dynamics of Common Bottlenose Dolphins (Tursiops truncatus) Along Coastal Texas  

E-Print Network [OSTI]

AGE, GROWTH, AND POPULATION DYNAMICS OF COMMON BOTTLENOSE DOLPHINS (Tursiops truncatus) ALONG COASTAL TEXAS A Thesis by RACHEL DAWN NEUENHOFF Submitted to the Office of Graduate Studies of Texas A&M University in partial... A Thesis by RACHEL DAWN NEUENHOFF 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 Approved by: Chair of Committee, Christopher...

Neuenhoff, Rachel Dawn

2010-10-12T23:59:59.000Z

13

Use of juvenoid insect growth regulators for management of cotton aphid, Aphis gossypii Glover, and silverleaf whitefly, Bemisia sp., populations  

E-Print Network [OSTI]

Studies were conducted on developmental, reproductive, population, and organophosphate insecticide susceptibility effects of juvenoid insect growth regulators OIGRS) on two homopteran pest insects of cotton: cotton aphid, Aphis gossypii Glover...

Satoh, Gordon Takeo

1993-01-01T23:59:59.000Z

14

World population growth, industrialization, energy demand, and environmental goals are presently driving rapid global change in emissions with complex conse-  

E-Print Network [OSTI]

395 World population growth, industrialization, energy demand, and environmental goals the average transport time is 2­3 weeks (Liu and Mauzerall 2005). Circumpolar trans- port of pollution around

Mauzerall, Denise

15

World population growth, industrialization, energy demand, and environmental goals are presently driving rapid global change in emissions with complex conse-  

E-Print Network [OSTI]

377 World population growth, industrialization, energy demand, and environmental goals the average transport time is 2­3 weeks (Liu and Mauzerall 2005). Circumpolar trans- port of pollution around

Mauzerall, Denise

16

The influence of prey consumption and demographic stochasticity on population growth rate of Isle Royale wolves Canis lupus  

E-Print Network [OSTI]

are often expressed as functions of per capita rate of consumption (Beddington et al. 1976), availability, or demographic stochasticity. To the extent that per capita consumption and population growth rate: 309/320, 2004 OIKOS 107:2 (2004) 309 #12;the relationship between per capita kill rate (consump- tion

17

Adaptation to metal-contaminated soils in populations of the moss, Ceratodon purpureus: Vegetative growth and reproductive expression  

SciTech Connect (OSTI)

Many observations suggest that morphological evolution occurs slowly in bryophytes, and this has been suggested to reflect low genetic diversity within species. Isozyme studies, however, stand in apparent contrast and have shown that bryophytes can contain high levels of genetic variability within and among populations. In light of this conflict, we tested the potential of the moss, Ceratodon purpureus, to undergo adaptive change (i.e., ecotypic differentiation) in response to soils that have been contaminated with high levels of metals for 90 years by measuring gametophytic growth and reproductive expression under experimental conditions. Variation in protonemal growth in sterile culture indicates that plants from one population growing on contaminated soil near a smelter are significantly more tolerant of zinc, cadmium, and lead than plants from uncontaminated sites. Results from a common garden experiment, in which plants were grown on soil from the smelter site, indicate that plants from near the smelter are significantly more tolerant of contaminated soils than plants from uncontaminated sites for vegetative growth. The same experiment suggests that plants from the smelter site are also more tolerant in terms of gametangial production (although we could not test this statistically). Our results demonstrate that C. purpureus has been able to undergo relatively rapid evolution in response to strong selective pressures. 29 refs., 4 figs., 5 tabs.

Jules, E.S.; Shaw, A.J. (Univ. of Michigan, Ann Arbor, MI (United States))

1994-06-01T23:59:59.000Z

18

Whooping crane (Grus americana) demography and environmental factors in a population growth simulation model  

E-Print Network [OSTI]

The Whooping Crane (Grus americana) is among North America?s most charismatic species. Between 1938 and 2004, the population that migrates between Aransas National Wildlife Refuge (ANWR) and Wood Buffalo National Park (WBNP), grew from 18 to 217...

Gil de Weir, Karine

2006-08-16T23:59:59.000Z

19

A SIMPLE METHOD FOR ESTIMATING THE FOOD CONSUMPTION OF FISH POPULATIONS FROM GROWTH DATA AND  

E-Print Network [OSTI]

model can be used to compute the food consumption per unit biomass of an age-structured fish population is illustrated with an analysis of data on dab (Lil/la7lda limanda). Estimating the quantity offood eaten during and examining the data available on aquatic ecosystems. ECOPATH esti- mates equilibriwn biomass (B), annual

20

Molecular-Level Variation Affects Population Growth in a Butterfly Metapopulation  

E-Print Network [OSTI]

are sensitive to the ecological context (the area and spatial connectivity of the habitat patches), which, this study challenges the perception that differential performance of individual genotypes, leading that a population's genetic composition influences its ecological dynamics is conceptually deeply rooted

Nachman, Michael

Note: This page contains sample records for the topic "moderate population growth" 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

Population differentiation in tree-ring growth response of white fir (Abies concolor) to climate: Implications for predicting forest responses to climate change  

SciTech Connect (OSTI)

Forest succession models and correlative models have predicted 200--650 kilometer shifts in the geographic range of temperate forests and forest species as one response to global climate change. Few studies have investigated whether population differences may effect the response of forest species to climate change. This study examines differences in tree-ring growth, and in the phenotypic plasticity of tree-ring growth in 16-year old white fir, Abies concolor, from ten populations grown in four common gardens in the Sierra Nevada of California. For each population, tree-ring growth was modelled as a function of precipitation and degree-day sums. Tree-ring growth under three scenarios of doubled C0{sub 2} climates was estimated.

Jensen, D.B.

1993-10-01T23:59:59.000Z

22

Cold moderators at ORNL  

SciTech Connect (OSTI)

The Advanced Neutron Source (ANS) cold moderators were not an 'Oak Ridge first', but would have been the largest both physically and in terms of cold neutron flux. Two cold moderators were planned each 410 mm in diameter and containing about 30L of liquid deuterium. They were to be completely independent of each other. A modular system design was used to provide greater reliability and serviceability. When the ANS was terminated, upgrading of the resident High Flux Isotope Reactor (HFIR) was examined and an initial study was made into the feasibility of adding a cold source. Because the ANS design was modular, it was possible to use many identical design features. Sub-cooled liquid at 4 bar abs was initially chosen for the HFIR design concept, but this was subsequently changed to 15 bar abs to operate above the critical pressure. As in the ANS, the hydrogen will operate at a constant pressure throughout the temperature range and a completely closed loop with secondary containment was adopted. The heat load of 2 kW made the heat flux comparable with that of the ANS. Subsequent studies into the construction of cryogenic moderators for the proposed new Synchrotron Neutron source indicated that again many of the same design concepts could be used. By connecting the two cold sources together in series, the total heat load of 2 kW is very close to that of the HFIR allowing a very similar supercritical hydrogen system to be configured. The two hydrogen moderators of the SNS provide a comparable heat load to the HFIR moderator. It is subsequently planned to connect the two in series and operate from a single cold loop system, once again using supercritical hydrogen. The spallation source also provided an opportunity to re-examine a cold pellet solid methane moderator operating at 20K.

Lucas, A. T.

1997-09-01T23:59:59.000Z

23

Growth, survival, distribution, and population estimates of penaeid shrimp in fertilized and unfertilized brackish water ponds receiving thermal effluents  

E-Print Network [OSTI]

/kg) and per pound (()/lb), and the number or weight of miscellaneous organisms (misc. organ. ) collected at harvest, of white and brown shrimp Mean growth per day and food conversion of white shrimp between samples. F designates fertilized ponds... natural foods over a wide variety of supplemental feeds. A large variety of organic and inorganic fertilizers have been applied at different rates in shrimp culture operations to enhance the natural productivity of the system. The most inexpensive...

Furness, Gary Neal

1978-01-01T23:59:59.000Z

24

Moderated ruthenium fischer-tropsch synthesis catalyst  

DOE Patents [OSTI]

The subject Fischer-Tropsch catalyst comprises moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation.

Abrevaya, Hayim (Wilmette, IL)

1991-01-01T23:59:59.000Z

25

Moderator  

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 SurfacesResource Program PreliminaryA3,0StatementsMixingAssessing85/2004 Y.He 1

26

Cryogenic moderator simulations : confronting reality.  

SciTech Connect (OSTI)

The Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory is a spallation neutron source dedicated to materials research. Its three cryogenic methane moderators provide twelve neutron beams to fourteen instruments and test facilities. This report concerns ongoing activities for benchmarking our Monte Carlo model of the IPNS neutron generation system. This paper concentrates on the techniques (both experimental and calculational) used in such benchmarking activities.

Iverson, E. B.

1999-01-06T23:59:59.000Z

27

Moderate Temperature | Open Energy Information  

Open Energy Info (EERE)

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: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 -Energieprojekte GmbHMilo, Maine:EnergyInformationDecker,(Biasi, EtyModerate

28

Low to moderate temperature nanolaminate heater  

DOE Patents [OSTI]

A low to moderate temperature heat source comprising a high temperature energy source modified to output low to moderate temperatures wherein the high temperature energy source modified to output low to moderate temperatures is positioned between two thin pieces to form a close contact sheath. In one embodiment the high temperature energy source modified to output low to moderate temperatures is a nanolaminate multilayer foil of reactive materials that produces a heating level of less than 200.degree. C.

Eckels, J. Del (Livermore, CA); Nunes, Peter J. (Danville, CA); Simpson, Randall L. (Livermore, CA); Hau-Riege, Stefan (Fremont, CA); Walton, Chris (Oakland, CA); Carter, J. Chance (Livermore, CA); Reynolds, John G. (San Ramon, CA)

2011-01-11T23:59:59.000Z

29

E-Print Network 3.0 - anti-insulin-like growth factor Sample...  

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

Medicine 20 Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary of Theory and Evidence Summary: influences due to population growth...

30

Population Ecology Philip M. Dixon  

E-Print Network [OSTI]

Population Ecology Philip M. Dixon Department of Statistics Iowa State University 20 December 2001 Population ecology is the discipline in ecology that deals with the structure and dynamics (e.g. growth interacting populations. Population ecology is closely related to other ecological disciplines, e

31

Populations Population Ecology  

E-Print Network [OSTI]

- species interactions Abiotic factors: l Climate l Temperature l Moisture l Wind l Soil l Fire Biotic- ? mortality increases as population size increases or birth rate decreases" l Negative feedback

Dever, Jennifer A.

32

Condensed tannin concentration of cotton, Gossypium hirsutum L., as affected by planting date, population density, stage of growth and plant part sampled  

E-Print Network [OSTI]

different. In 1989 planting date 2 averaged significantly higher condensed tannins than PD 1 or 3 (Table 3). The biological significance of this observation is unclear. Condensed tannin content of the TL and ML averaged over all other factors...). 17 Table 4. Condensed tannin content of cotton for 5 stages of growth, averaged over 3 planting dates, 6 genotypes, 2 plant parts and 2 years at College Station, TX. Stage of growth Condensed tannin fresh wt. 4th true leaf (4TL) Pinhead square...

Lege, Ken Edward

1990-01-01T23:59:59.000Z

33

Energy demand and population changes  

SciTech Connect (OSTI)

Since World War II, US energy demand has grown more rapidly than population, so that per capita consumption of energy was about 60% higher in 1978 than in 1947. Population growth and the expansion of per capita real incomes have led to a greater use of energy. The aging of the US population is expected to increase per capita energy consumption, despite the increase in the proportion of persons over 65, who consume less energy than employed persons. The sharp decline in the population under 18 has led to an expansion in the relative proportion of population in the prime-labor-force age groups. Employed persons are heavy users of energy. The growth of the work force and GNP is largely attributable to the growing participation of females. Another important consequence of female employment is the growth in ownership of personal automobiles. A third factor pushing up labor-force growth is the steady influx of illegal aliens.

Allen, E.L.; Edmonds, J.A.

1980-12-01T23:59:59.000Z

34

Better Buildings Program San Jose - Serving Moderate Income Residents...  

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

Program San Jose - Serving Moderate Income Residents Better Buildings Program San Jose - Serving Moderate Income Residents Provides an overview of the program components and goals,...

35

Dark Matter Search with Moderately Superheated Liquids  

E-Print Network [OSTI]

We suggest the use of moderately superheated liquids in the form of superheated droplet detectors for a new type of neutralino search experiment. The advantage of this method for Dark Matter detection is, that the detector material is cheap, readily available and that it is easily possible to fabricate a large mass detector. Moreover the detector can be made "background blind", i.e. exclusively sensitive to nuclear recoils.

L. A. Hamel; L. Lessard; V. Zacek; Bhaskar Sur

1996-02-14T23:59:59.000Z

36

MICROBIAL POPULATIONS FECAL PELLETS AND  

E-Print Network [OSTI]

MICROBIAL POPULATIONS FECAL PELLETS AND AND BIOLU}IINESCENCEOF OCEANIC SEDII,IENTTRAP PARTICLES activities of microbial populations associated with fecal pellets col-Lecteo from oceanic zooplankton were (indicators of microbial growth and reproduction rates, respectively) were monitored in fecal pellets at time

Luther, Douglas S.

37

allometric appendage growth: Topics by E-print Network  

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

1 PERSPECTIVES Allometric growth, life-history invariants and population energetics Environmental Sciences and Ecology Websites Summary: IDEAS AND PERSPECTIVES Allometric growth,...

38

Growth of Spirals: Secular or Driven by Mergers ?  

E-Print Network [OSTI]

The physical phenomena contributing to the galaxy growth can be tested all the way to z= 1. Galaxy mass, extinction, star formation and gas metal abundance can be measured in a robust way, as well as the distribution of the galaxy morphologies. I discuss here the observational methods and their accuracy. Physical quantities can be evaluated with uncertainties much lower than 0.3 dex, if they are based on 2 sets of independent measurements. For example, at a given IMF, the star formation rate is well estimated by combining flux measurements of the extinction corrected Balmer line and of the mid-IR continuum. Spiral mass growth had occurred from gas accretion and from merging. Gas accretion can explain at most half of the spiral mass growth: at moderate redshift, the numerous population of compact, merger and irregular galaxies requires another origin. A spiral rebuilding scenario is able to reproduce all the evolutionary trends observed since z~1, and could be at the origin of the present-day, numerous population of early type spirals.

F. Hammer

2005-09-30T23:59:59.000Z

39

advanced moderately differentiated: Topics by E-print Network  

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

Resolution Imaging Spectrometer (MODIS) to calibrate advanced very high resolution radiometer Geosciences Websites Summary: Using Moderate Resolution Imaging Spectrometer (MODIS)...

40

Fischer-Tropsch synthesis process employing a moderated ruthenium catalyst  

DOE Patents [OSTI]

A Fischer-Tropsch type process produces hydrocarbons from carbon monoxide and hydrogen using a novel catalyst comprising moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation.

Abrevaya, Hayim (Wilmette, IL)

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Fischer-Tropsch synthesis process employing a moderated ruthenium catalyst  

DOE Patents [OSTI]

A Fischer-Tropsch type process produces hydrocarbons from carbon monoxide and hydrogen using a novel catalyst comprising moderated ruthenium on an inorganic oxide support. The preferred moderator is silicon. Preferably the moderator is effectively positioned in relationship to ruthenium particles through simultaneous placement on the support using reverse micelle impregnation. 1 fig.

Abrevaya, H.

1990-07-31T23:59:59.000Z

42

Stress corrosion crack growth in porous sandstones.  

E-Print Network [OSTI]

Stress corrosion crack growth occurs when the chemical weakening of strained crack tip bonds facilitates crack propagation. I have examined the effect of chemical processes on the growth of a creack population by carrying out triaxial compression...

Ojala, Ira O

43

Estimating phytoplankton growth rates from compositional data  

E-Print Network [OSTI]

I build on the deterministic phytoplankton growth model of Sosik et al. by introducing process error, which simulates real variation in population growth and inaccuracies in the structure of the matrix model. Adding a ...

Thomas, Lorraine (Lorraine Marie)

2008-01-01T23:59:59.000Z

44

Notes and Discussion Vole Population Dynamics: Influence of Weather Extremes on Stoppage of  

E-Print Network [OSTI]

Notes and Discussion Vole Population Dynamics: Influence of Weather Extremes on Stoppage of Population Growth ABSTRACT.--Effects of 74 episodes of extreme weather on stoppage of population growth of extreme weather may have stopped population growth of only six M. ochrogaster fluctuations and of two M

Oli, Madan K.

45

Demographic heterogeneity, cohort selection, and population growth  

E-Print Network [OSTI]

Willi, Y. , and A. A. Hoffmann. 2009. Demographic factorset al. 2006, Willi and Hoffmann 2009). Lande and Shannon (

Kendall, Bruce E.; Fox, Gordon A; Fujiwara, Masami; Nogeire, Theresa M

2011-01-01T23:59:59.000Z

46

The Denver Energy Challenge- Serving Moderate Income Residents  

Broader source: Energy.gov [DOE]

Provides an overview of the Denver Energy Challenge and how services were expanded to moderate income residents including challenges and next steps.

47

Production And Characterization Of Tungsten-Based Positron Moderators  

SciTech Connect (OSTI)

Experiments of interest in Atomic Physics require production of well-defined low-energy positron beams through a moderation process of high-energy positrons, which can be produced by either the use of a radioactive source or by accelerator based pair production process. Tungsten is one of the most commonly used moderator materials because of its reasonable efficiency, high work function and relatively low cost. In this work we present different methods to produce tungsten-based candidate moderators in a variety of shapes. We also present results from characterizing these candidate moderators by ion beam analysis and microscopy techniques.

Lucio, O. G. de; Morales, J. G.; Cruz-Manjarrez, H. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364 01000, Mexico DF (Mexico)

2011-06-01T23:59:59.000Z

48

Viscous Undular Hydraulic Jumps of Moderate Reynolds number  

E-Print Network [OSTI]

Viscous Undular Hydraulic Jumps of Moderate Reynolds number Ratul Dasgupta I will present some results on undular hydraulic jumps occurring in a two bores (in rivers), where the interface remains horizontal, the moderate Reynolds hydraulic jump shows a linear increase in height due to viscosity

Shyamasundar, R.K.

49

DESIGN PHILOSOPHY FOR STEEL STRUCTURES IN MODERATE SEISMIC REGIONS  

E-Print Network [OSTI]

DESIGN PHILOSOPHY FOR STEEL STRUCTURES IN MODERATE SEISMIC REGIONS E.M. Hines1 and L.A. Fahnestock2 ABSTRACT The authors propose a design philosophy for steel buildings in moderate seismic regions that draws to the continued development and validation of this philosophy. Introduction Recent widespread adoption

Hines, Eric

50

Very ice rich permafrost Moderately ice rich permafrost  

E-Print Network [OSTI]

TK lake Very ice rich permafrost Permafrost forest Moderately ice rich permafrost Open Bog Open Fen characteristics (mainly ice content) and burn severity determine trajectories of ecosystem succession post in the presence of moderately ice rich permafrost but have high resilience only under low burn severity in very

Ruess, Roger W.

51

E-Print Network 3.0 - affects behaviour growth Sample Search...  

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

Ecology 23 Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary of Theory and Evidence Summary: ). The central question investigated...

52

E-Print Network 3.0 - activity growth rate Sample Search Results  

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

Medicine 23 Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary of Theory and Evidence Summary: that Uganda has one of the highest...

53

E-Print Network 3.0 - affect early growth Sample Search Results  

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

4 Population Growth, (Per Capita) Economic Growth, and Poverty Reduction in Uganda: A brief Summary of Theory and Evidence Summary: ). The central question investigated...

54

Cryogenic neutron moderator on mesitylene pellets for IBR-2 reactor  

E-Print Network [OSTI]

Cryogenic neutron moderator on mesitylene pellets for IBR-2 reactor Anan'ev V., Belyakov A the camera is 40 K Temperature inside the camera is 160 K (pellets stick to the baffle) #12;Fulfillment

Titov, Anatoly

55

Occupational Populations  

E-Print Network [OSTI]

? The general population may be exposed to radon in indoor and outdoor air and drinking water. ? The primary source of indoor radon is from soil; radon in the soil can enter the home through cracks in the floors, walls, or foundations. The release of radon from water may also contribute to indoor levels. ? Exposures to radon gas are accompanied by exposure to radon progeny which are the decay products of radon-222 [e.g., bismuth-214 ( 214 Bi), lead-210 ( 210 Pb), 214 Pb, polonium-210 ( 210 Po), and 218 Po.

unknown authors

56

Impact of entrainment and impingement on fish populations in the Hudson River Estuary. Volume II. Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass spawning stock, and the LMS real-time life cycle model  

SciTech Connect (OSTI)

This volume includes a series of four exhibits relating to impacts of impingement on fish populations, together with a collection of critical evaluations of testimony prepared for the utilities by their consultants. The first exhibit is a quantitative evaluation of four sources of bias (collection efficiency, reimpingement, impingement on inoperative screens, and impingement survival) affecting estimates of the number of fish killed at Hudson River power plants. The two following exhibits contain, respectively, a detailed assessment of the impact of impingement on the Hudson River white perch population and estimates of conditional impingement mortality rates for seven Hudson River fish populations. The fourth exhibit is an evaluation of the engineering feasibility and potential biological effectiveness of several types of modified intake structures proposed as alternatives to cooling towers for reducing impingement impacts. The remainder of Volume II consists of critical evaluations of the utilities' empirical evidence for the existence of density-dependent growth in young-of-the-year striped bass and white perch, of their estimate of the age-composition of the striped bass spawning stock in the Hudson River, and of their use of the Lawler, Matusky, and Skelly (LMS) Real-Time Life Cycle Model to estimate the impact of entrainment and impingement on the Hudson River striped bass population.

Barnthouse, L. W.; Van Winkle, W.; Golumbek, J.; Cada, G. F.; Goodyear, C. P.; Christensen, S. W.; Cannon, J. B.; Lee, D. W.

1982-04-01T23:59:59.000Z

57

Enhancing Neutron Beam Production with a Convoluted Moderator  

SciTech Connect (OSTI)

We describe a new concept for a neutron moderating assembly resulting in the more efficient production of slow neutron beams. The Convoluted Moderator, a heterogeneous stack of interleaved moderating material and nearly transparent single-crystal spacers, is a directionally-enhanced neutron beam source, improving beam effectiveness over an angular range comparable to the range accepted by neutron beam lines and guides. We have demonstrated gains of 50% in slow neutron intensity for a given fast neutron production rate while simultaneously reducing the wavelength-dependent emission time dispersion by 25%, both coming from a geometric effect in which the neutron beam lines view a large surface area of moderating material in a relatively small volume. Additionally, we have confirmed a Bragg-enhancement effect arising from coherent scattering within the single-crystal spacers. We have not observed hypothesized refractive effects leading to additional gains at long wavelength. In addition to confirmation of the validity of the Convoluted Moderator concept, our measurements provide a series of benchmark experiments suitable for developing simulation and analysis techniques for practical optimization and eventual implementation at slow neutron source facilities.

Iverson, Erik B [ORNL] [ORNL; Baxter, David V [Center for the Exploration of Energy and Matter, Indiana University] [Center for the Exploration of Energy and Matter, Indiana University; Muhrer, Guenter [Los Alamos National Laboratory (LANL)] [Los Alamos National Laboratory (LANL); Ansell, Stuart [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] [ISIS Facility, Rutherford Appleton Laboratory (ISIS); Gallmeier, Franz X [ORNL] [ORNL; Dalgliesh, Robert [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] [ISIS Facility, Rutherford Appleton Laboratory (ISIS); Lu, Wei [ORNL] [ORNL; Kaiser, Helmut [Center for the Exploration of Energy and Matter, Indiana University] [Center for the Exploration of Energy and Matter, Indiana University

2014-01-01T23:59:59.000Z

58

Support Vector Machines in Moderate Sub-pixel Snow Mapping  

E-Print Network [OSTI]

Support Vector Machines in Moderate Sub-pixel Snow Mapping Hongen Zhang College of Environmental technique in sub-pixel snow mapping, support vector machines (SVMs). In practice, SVM method provided% as compared to the reference data from Aster image classification, which show that the support vector machines

California at Santa Barbara, University of

59

THORIUM FUEL CYCLES: A GRAPHITE-MODERATED MOLTEN SALT REACTOR  

E-Print Network [OSTI]

THORIUM FUEL CYCLES: A GRAPHITE-MODERATED MOLTEN SALT REACTOR VERSUS A FAST SPECTRUM SOLID FUEL is to compare two main options dedicated to long-term energy production with Thorium: solid fuel with fast its be- haviour until it reaches the 232Th/233U equilibrium from two di erent starting fuels: 232Th

Paris-Sud XI, Universit de

60

Family Moderate Income Homeowners In New York State  

Broader source: Energy.gov [DOE]

"Family Moderate Income Homeowners In New York State: Enhancing Resource Accessibility Through Process Improvement and Targeted Outreach," by Residential Energy Efficiency Solutions, July 10, 2012, Arlington, Virginia. Provides an overview of broadening accessibility to financing through process improvement and targeted outreach.

Note: This page contains sample records for the topic "moderate population growth" 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

Standard practice for evaluation of surveillance capsules from light-water moderated nuclear power reactor vessels  

E-Print Network [OSTI]

Standard practice for evaluation of surveillance capsules from light-water moderated nuclear power reactor vessels

American Society for Testing and Materials. Philadelphia

2010-01-01T23:59:59.000Z

62

SIMULATING THE IMPACTS OF CLIMATE CHANGE, PRICES AND POPULATION ON CALIFORNIA'S  

E-Print Network [OSTI]

temperature bins on households' electricity consumption. The estimation uses a comprehensive household level of higher electricity prices and different scenarios of population growth. Finally, simulations wereSIMULATING THE IMPACTS OF CLIMATE CHANGE, PRICES AND POPULATION ON CALIFORNIA'S RESIDENTIAL

Auffhammer, Maximilian

63

Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations  

E-Print Network [OSTI]

Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable ...

Klanj?ek, Tin

2006-01-01T23:59:59.000Z

64

Egypt's population policies and family planning program: a critical examination  

E-Print Network [OSTI]

Egypt's national family planning program, in existence since 1965, has been fairly successful in increasing the use of family planning methods and lowering the population growth rate in Egypt. However, the fact that as few as 10 percent of women...

Carr, Aline B.

1996-01-01T23:59:59.000Z

65

A Few Observations about Mounting Moderately Sized Mirrors  

SciTech Connect (OSTI)

Most of the mirror mounting literature has focused on small (less than 0.1 meters) or large (greater than 1 meter) mirrors. We will examine the theory and practice of mounting moderately sized mirrors (between 0.1 and 1 meter). Two examples will be taken from optical diagnostic systems designed for the National Ignition Facility (NIF). In both cases the mirrors were removable (not bonded in place). One of the examples will be for a mirror with a poor aspect ratio (i.e. diameter to thickness ratio greater than 15:1).

Kaufman, M. I.

2011-09-01T23:59:59.000Z

66

Development of a standard for calculation and measurement of the moderator temperature coefficient of reactivity in water-moderated power reactors  

SciTech Connect (OSTI)

The contents of ANS 19.11, the standard for ``Calculation and Measurement of the Moderator Temperature Coefficient of Reactivity in Water-Moderated Power Reactors,`` are described. The standard addresses the calculation of the moderator temperature coefficient (MTC) both at standby conditions and at power. In addition, it describes several methods for the measurement of the at-power MTC and assesses their relative advantages and disadvantages. Finally, it specifies a minimum set of documentation requirements for compliance with the standard.

Mosteller, R.D. [Los Alamos National Lab., NM (United States); Hall, R.A. [Virginia Power, Glen Allen, VA (United States). Innsbrook Technical Center; Apperson, C.E. Jr. [Westinghouse Safety Management Solutions, Inc., Aiken, SC (United States); Lancaster, D.B. [TRW Environmental Safety Systems, Inc., Vienna, VA (United States); Young, E.H. [Commonwealth Edison Co., Downers Grove, IL (United States); Gavin, P.H. [ABB Combustion Engineering, Windsor, CT (United States); Robertson, S.T. [Framatome/COGEMA Fuels, Lynchburg, VA (United States)

1998-12-01T23:59:59.000Z

67

Population Analysis, Fall 2005 1 Population Analyses  

E-Print Network [OSTI]

Population Analysis, Fall 2005 1 Population Analyses EEOB/AEcl 611 Fall Semester 2005 Scheduled Phone: 294-5176 email: wrclark@iastate.edu AEcl 611 is evolving in response to very rapid changes. The emphasis in AEcl 611 is on understanding the statistical basis of various analytical techniques, applying

Clark, William R.

68

The Great Moderation and Leptokurtosis after GARCH WenShwo Fang  

E-Print Network [OSTI]

The Great Moderation and Leptokurtosis after GARCH Adjustment WenShwo Fang Department of Economics that this finding of fat tails may reflect the Great Moderation. That is, leptokurtosis disappears after GARCH Moderation, leptokurtosis, GARCH models JEL classification: C32; E32; O40 * Corresponding author #12

Ahmad, Sajjad

69

Economic Growth Policies & Economic Growth Theory Influences.  

E-Print Network [OSTI]

?? The aim of this thesis is to describe the presence of theories for economic growth in municipalities economic growth strategies, and to compare the (more)

Hallden, Sophie

2012-01-01T23:59:59.000Z

70

State zoning legislation and local adaptation : an evaluation on the implementation of Massachusetts Chapter 40R Smart Growth Legislation  

E-Print Network [OSTI]

The Smart Growth Zoning Overlay District Act (M.G.L. Chapter 40R, the Legislation) was issued in March 2005 with the mission to substantially increase the supply of housing, especially for low- and moderate-income households, ...

Wang, Yuqi, M.C.P. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

71

Diversity waves in collapse-driven population dynamics  

E-Print Network [OSTI]

Populations of species in ecosystems are constrained by the availability of resources within their environment. In effect this means that a growth of one population, needs to be balanced by the reduction in size of others. In neutral models of biodiversity all populations are assumed to change incrementally due to stochastic births and deaths of individuals. Here we propose and model another redistribution mechanism driven by abrupt collapses of the entire population of a single species freeing up resources for the remaining ones. This mechanism may be relevant for communities of bacteria, with strain-specific collapses caused e.g. by invading bacteriophages, or for other ecosystems where infectious diseases play an important role. The emergent property of the population dynamics in our system are cyclic "diversity waves" triggered by collapses of globally dominating populations. The population diversity in the environment peaks at the beginning of each wave and exponentially decreases afterwards. Population ...

Maslov, Sergei

2015-01-01T23:59:59.000Z

72

Moderation control in low enriched {sup 235}U uranium hexafluoride packaging operations and transportation  

SciTech Connect (OSTI)

Moderation control is the basic parameter for ensuring nuclear criticality safety during the packaging and transport of low {sup 235}U enriched uranium hexafluoride before its conversion to nuclear power reactor fuel. Moderation control has permitted the shipment of bulk quantities in large cylinders instead of in many smaller cylinders and, therefore, has resulted in economies without compromising safety. Overall safety and uranium accountability have been enhanced through the use of the moderation control. This paper discusses moderation control and the operating procedures to ensure that moderation control is maintained during packaging operations and transportation.

Dyer, R.H. [USDOE Oak Ridge Operations Office, TN (United States); Kovac, F.M. [Oak Ridge National Lab., TN (United States); Pryor, W.A. [PAI Corp., Oak Ridge, TN (United States)

1993-10-01T23:59:59.000Z

73

Conceptual design of a pressure tube light water reactor with variable moderator control  

SciTech Connect (OSTI)

This paper presents the development of innovative pressure tube light water reactor with variable moderator control. The core layout is derived from a CANDU line of reactors in general, and advanced ACR-1000 design in particular. It should be stressed however, that while some of the ACR-1000 mechanical design features are adopted, the core design basics of the reactor proposed here are completely different. First, the inter fuel channels spacing, surrounded by the calandria tank, contains a low pressure gas instead of heavy water moderator. Second, the fuel channel design features an additional/external tube (designated as moderator tube) connected to a separate moderator management system. The moderator management system is design to vary the moderator tube content from 'dry' (gas) to 'flooded' (light water filled). The dynamic variation of the moderator is a unique and very important feature of the proposed design. The moderator variation allows an implementation of the 'breed and burn' mode of operation. The 'breed and burn' mode of operation is implemented by keeping the moderator tube empty ('dry' filled with gas) during the breed part of the fuel depletion and subsequently introducing the moderator by 'flooding' the moderator tube for the 'burn' part. This paper assesses the conceptual feasibility of the proposed concept from a neutronics point of view. (authors)

Rachamin, R.; Fridman, E. [Reactor Safety Div., Inst. of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, POB 51 01 19, 01314 Dresden (Germany); Galperin, A. [Dept. of Nuclear Engineering, Ben-Gurion Univ. of the Negev, POB 653, Beer Sheva 84105 (Israel)

2012-07-01T23:59:59.000Z

74

Optimizing moderator dimensions for neutron scattering at the spallation neutron source  

SciTech Connect (OSTI)

In this work, we investigate the effect of neutron moderator dimensions on the performance of neutron scattering instruments at the Spallation Neutron Source (SNS). In a recent study of the planned second target station at the SNS facility, we have found that the dimensions of a moderator play a significant role in determining its surface brightness. A smaller moderator may be significantly brighter over a smaller viewing area. One of the immediate implications of this finding is that for modern neutron scattering instrument designs, moderator dimensions and brightness have to be incorporated as an integrated optimization parameter. Here, we establish a strategy of matching neutron scattering instruments with moderators using analytical and Monte Carlo techniques. In order to simplify our treatment, we group the instruments into two broad categories: those with natural collimation and those that use neutron guide systems. For instruments using natural collimation, the optimal moderator selection depends on the size of the moderator, the sample, and the moderator brightness. The desired beam divergence only plays a role in determining the distance between sample and moderator. For instruments using neutron optical systems, the smallest moderator available that is larger than the entrance dimension of the closest optical element will perform the best (assuming, as is the case here that smaller moderators are brighter)

Zhao, J. K.; Robertson, J. L.; Herwig, Kenneth W.; Gallmeier, Franz X.; Riemer, Bernard W. [Instrument and Source Division, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Instrument and Source Division, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2013-12-15T23:59:59.000Z

75

Population and Climate Change:Population and Climate Change: Are they related?Are they related?  

E-Print Network [OSTI]

depletion: water, oil, fisheries, topsoil, etc. Resource wars and civil conflicts Malnutrition and world! We are still missing the most important component of the Earth System: the Human System #12;Is, population would be much smaller! Growth in grain production is now flattening out Industrial farming

Kalnay, Eugenia

76

Is Florida's Growth Management Act protecting agricultural lands?  

E-Print Network [OSTI]

Florida has experienced more population growth over the past half century than any other state, which has led to some of the most extensive urban development on valuable agricultural lands. To address this and other impacts ...

Lloyd, Stephen (Stephen Charles Rhys)

2011-01-01T23:59:59.000Z

77

Water Quality and Quantity Concerns Population growth, increasing water demands,  

E-Print Network [OSTI]

systems, private water well screening, and soil nutrient management. Water conservation programs of Agri, efficient use, sustainable practices, watershed management and environmental stewardship. Through 660 and utilizing water-conservation practices will be essential to sustain the state's water supply

78

E-Print Network 3.0 - advanced gas cooled graphite moderated...  

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

at Chicago's Stagg Field and the X-IO graphite reactor at Oak Ridge). The Los Alamos Water Boiler... for neutron multiplication experiments at moderate power. They also...

79

E-Print Network 3.0 - acute moderate exercise Sample Search Results  

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

moderate program prolong cool-down with light activities; avoid exercise... required: ECG Exercise Test X-Ray Blood Urinalysis Other What physical activity do you intend to...

80

Economic Growth, Physical Limits and Liveability  

E-Print Network [OSTI]

on criteria air contaminants, water use, land use, greenhouse gas emissions and solid waste disposal and population growth, impose the physical limits and then simulate household and firm responses to policy and assess the resulting implications for liveability in the region. I measure liveability using 24

Note: This page contains sample records for the topic "moderate population growth" 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

Florida Growth Fund (Florida)  

Broader source: Energy.gov [DOE]

The Florida Growth Fund can provide investments in technology and growth-related companies through co-investments with other institutional investors. The Fund awards preference to companies...

82

Seismic vulnerability analysis of moderate seismicity areas using in situ experimental  

E-Print Network [OSTI]

Seismic vulnerability analysis of moderate seismicity areas using in situ experimental techniques (LGIT), LCPC, CNRS, Université Joseph Fourier Grenoble Abstract Seismic vulnerability analysis. This curve is particularly interesting in moderate seismic areas. This methodology is applied to the Grenoble

Paris-Sud XI, Université de

83

Report on the international workshop on cold moderators for pulsed neutron sources.  

SciTech Connect (OSTI)

The International Workshop on Cold Moderators for Pulsed Neutron Sources resulted from the coincidence of two forces. Our sponsors in the Materials Sciences Branch of DOE's Office of Energy Research and the community of moderator and neutron facility developers both realized that it was time. The Neutron Sources Working Group of the Megascience Forum of the Organization for Economic Cooperation and Development offered to contribute its support by publishing the proceedings, which with DOE and Argonne sponsorship cemented the initiative. The purposes of the workshop were: to recall and improve the theoretical groundwork of time-dependent neutron thermalization; to pose and examine the needs for and benefits of cold moderators for neutron scattering and other applications of pulsed neutron sources; to summarize experience with pulsed source, cold moderators, their performance, effectiveness, successes, problems and solutions, and the needs for operational data; to compile and evaluate new ideas for cold moderator materials and geometries; to review methods of measuring and characterizing pulsed source cold moderator performance; to appraise methods of calculating needed source characteristics and to evaluate the needs and prospects for improvements; to assess the state of knowledge of data needed for calculating the neutronic and engineering performance of cold moderators; and to outline the needs for facilities for testing various aspects of pulsed source cold moderator performance.

Carpenter, J. M.

1999-01-06T23:59:59.000Z

84

Policy on Moderation of Assessment In May 2013, the Senate approved, for implementation  

E-Print Network [OSTI]

Policy on Moderation of Assessment In May 2013, the Senate approved, for implementation with effect from 2013/14, a Policy on the Moderation of Assessment. The aim is: To assure the University policies covers: All qualifying assessments contributing to the degree awards associated with a programme

Painter, Kevin

85

Populating the Whole Landscape  

E-Print Network [OSTI]

Every de Sitter vacuum can transition to every other de Sitter vacuum despite any obstacle, despite intervening anti-de Sitter sinks, despite not being connected by an instanton. Eternal inflation populates the whole landscape.

Adam R. Brown; Alex Dahlen

2012-02-19T23:59:59.000Z

86

Consolidated fuel reprocessing program: Criticality experiments with fast test reactor fuel pins in an organic moderator  

SciTech Connect (OSTI)

The results obtained in a series of criticality experiments performed as part of a joint program on criticality data development between the United States Department of Energy and the Power Reactor and Nuclear Fuel Development Corporation of Japan are presented in this report along with a complete description of the experiments. The experiments involved lattices of Fast Test Reactor (FTR) fuel pins in an organic moderator mixture similar to that used in the solvent extraction stage of fuel reprocessing. The experiments are designed to provide data for direct comparison with previously performed experimental measurements with water moderated lattices of FTR fuel pins. The same lattice arrangements and FTR fuel pin types are used in these organic moderated experimental assemblies as were used in the water moderated experiments. The organic moderator is a mixture of 38 wt % tributylphosphate in a normal paraffin hydrocarbon mixture of C{sub 11}H{sub 24} to C{sub 15}H{sub 32} molecules. Critical sizes of 1054.8, 599.2, 301.8, 199.5 and 165.3 fuel pins were obtained respectively for organic moderated lattices having 0.761 cm, 0.968 cm, 1.242 cm, 1.537 cm and 1.935 cm square lattice pitches as compared to 1046.9, 571.9, 293.9, 199.7 and 165.1 fuel pins for the same lattices water moderated.

Bierman, S.R.

1986-12-01T23:59:59.000Z

87

Optimizing Moderator Dimensions for Neutron Scattering at the Spallation Neutron Source  

SciTech Connect (OSTI)

In this work, we investigate the effect of neutron moderator dimensions on the performance of neutron scattering instruments at the Spallation Neutron Source. In a recent study of the planned second target station at the Spallation Neutron Source (SNS) facility [1,2], we have found that the dimensions of a moderator play a significant role in determining its surface brightness. A smaller moderator may be significantly brighter for a smaller viewing area [4]. One of the immediate implications of this finding is that for modern neutron scattering instrument designs, moderator dimensions and brightness have to be incorporated as an integrated optimization parameter. Here, we establish a strategy of matching neutron scattering instruments with moderators using analytical and Monte Carlo techniques. In order to simplify our treatment, we group the instruments into two broad categories, those with natural collimation and those that use neutron guide systems. We found that the cross-sections of the sample and the neutron guide, respectively, are the deciding factors for choosing the moderator. Beam divergence plays no role as long as it is within the reach of practical constraints. Namely, the required divergence is not too large for the guide or sample to be located close enough to the moderator on an actual spallation source.

Zhao, Jinkui [ORNL] [ORNL; Robertson, Lee [ORNL] [ORNL; Herwig, Kenneth W [ORNL] [ORNL; Gallmeier, Franz X [ORNL] [ORNL; Riemer, Bernie [ORNL] [ORNL

2013-01-01T23:59:59.000Z

88

U.S. Energy Information Administration (EIA) - Source  

Gasoline and Diesel Fuel Update (EIA)

moderate population growth, an extended economic recovery, and increasing energy efficiency in end-use applications....Read full section With modest economic growth,...

89

U.S. Energy Information Administration (EIA) - Source  

Gasoline and Diesel Fuel Update (EIA)

U.S. Energy Demand exec summary Executive Summary The rate of growth in energy use slows over the projection period, reflecting moderate population growth, an extended economic...

90

CAUSAL ANALYSIS OF THE UNCONTROLLED MODERATOR IN THE HFEF MAIN CELL  

SciTech Connect (OSTI)

On 11/07/2012 while investigating the cause of defects in neutron radiography film at HFEF, oil was discovered near the elevator shaft located at the 4M location within the Main Cell. Subsequent investigation identified oil (untracked moderator) in several locations ofthe HFEF Main Cell. Initial analysis determined that oil leaking from a 1M shielding window had leaked past a compensatory containment system resulting in a thin layer of oil found in several locations on the main cell floor. The result of this condition is uncontrolled moderator in moderator controlled zones, which is a violation of Criticality Hazard Control Statements (CHCS) for HFEF.

Charles R. Posegate; Bryan P. Crofts

2012-12-01T23:59:59.000Z

91

A comparative analysis of population growth in China and Egypt : people, policies and prospects : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Arts (Politics) in the School of People, Environment and Planning at Massey University, Albany campus, New Zealand.  

E-Print Network [OSTI]

??Despite their geographical locations and historical disassociations, China and Egypt face one essential identical issue in common the problem of over population. This study compares (more)

Yu, Yang

2011-01-01T23:59:59.000Z

92

The differential effects of Ligula intestinalis (L.) plerocercoids on host growth in  

E-Print Network [OSTI]

populations of roach, Rutilus rutilus (L.) Un resumen en espan? ol se incluye detra? s del texto principal de natural populations of roach, Rutilus rutilus (L.). Ecology of Freshwater Fish 2002: 11: 168 cestode, Ligula intestinalis, on the growth rates of three fish populations of the roach, Rutilus rutilus

Roche, Benjamin

93

Deviance as an antecedent and consequence of early transitions to adulthood: mediating effects and moderating conditions  

E-Print Network [OSTI]

to examine whether the relationships observed for the full sample are moderated by gender, race/ethnicity, paternal level of education, and expectations for future failure in conventional adolescent roles. For the full sample, the simplified model produced...

Halim, Shaheen

2005-08-29T23:59:59.000Z

94

Moderators of the Safety Climate-Injury Relationship: A Meta-Analytic Examination  

E-Print Network [OSTI]

This study examined the variability in the observed relationship between safety climate and injuries in the extant literature by meta-analytically examining possible moderators of the safety climate-injury relationship at both the individual...

Beus, Jeremy M.

2010-07-14T23:59:59.000Z

95

Zoning and occupancy-moderation for residential space-conditioning under demand-driven electricity pricing  

E-Print Network [OSTI]

Occupancy-moderated zonal space-conditioning (OZS) refers to the partitioning of a residence into different zones and independently operating the space-conditioning equipment of each zone based on its occupancy. OZS remains ...

Leow, Woei Ling, 1977-

2012-01-01T23:59:59.000Z

96

Spatial and Temporal Patterns of Eastern Oyster (Crassostrea virginica) Populations and Their Relationships to Dermo (Perkinsus marinus) Infection and Freshwater Inflows in West Matagorda Bay, Texas.  

E-Print Network [OSTI]

Matagorda Bay, Texas. The objectives were to design and link three population models that simulate oyster population dynamics and integrate the environmental factors that influence growth, reproduction and settlement of larvae among these three reefs...

Culbertson, Jan C.

2010-01-14T23:59:59.000Z

97

Regulating reproduction in India's population Efforts, Results and Recommen dations. By K. Srinivasan, Sage, New Delhi, 1995.  

E-Print Network [OSTI]

Regulating reproduction in India's population Efforts, Results and Recommen­ dations. By K, St. Louis, MO 63130 India's population growth is a paradox. In 1952, India became the first country in the world to institute a national policy to limit population, and the central government has pursued

McCarthy, John E.

98

Regulating reproduction in India's population Efforts, Results and Recommen-dations. By K. Srinivasan, Sage, New Delhi, 1995.  

E-Print Network [OSTI]

Regulating reproduction in India's population Efforts, Results and Recommen- dations., Washington University, St. Louis, MO 63130 India's population growth is a paradox. In 1952, India became the first countr* *y in the world to institute a national policy to limit population

McCarthy, John E.

99

The Environments of Low and High Luminosity Radio Galaxies at Moderate Redshifts  

E-Print Network [OSTI]

In the local Universe, high-power radio galaxies live in lower density environments than low-luminosity radio galaxies. If this trend continues to higher redshifts, powerful radio galaxies would serve as efficient probes of moderate redshift groups and poor clusters. Photometric studies of radio galaxies at 0.3 environment correlation disappears at moderate redshifts, though this could be the result of foreground/background contamination affecting the photometric measures of environment. We have obtained multi-object spectroscopy of in the fields of 14 lower luminosity (L_1.4GHz 1.2x10^25 W/Hz) radio galaxies at z ~ 0.3 to spectroscopically investigate the link between the environment and the radio luminosity of radio galaxies at moderate redshifts. Our results support the photometric analyses; there does not appear to be a correlation between the luminosity of a radio galaxy and its environment at moderate redshifts. Hence, radio galaxies are not efficient signposts for group environments at moderate redshifts.

M. W. Auger; R. H. Becker; C. D. Fassnacht

2008-01-02T23:59:59.000Z

100

Population Pattern, Data This is a closed-book, no notes test!  

E-Print Network [OSTI]

Revolution Industrial Revolution Population growth over time Most of the history: hunting-gathering society (1 A.D.): 250 million Industrial revolution (1750): 800 million 1750-1950: rapid increase, 2 in population after 1750 was due to declines in the death rate during the Industrial Revolution. Higher

Huang, Youqin

Note: This page contains sample records for the topic "moderate population growth" 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

Out-Migration of Second Generation Frontier Colonists and Population Redistribution in the Ecuadorian Amazon  

E-Print Network [OSTI]

1 Out-Migration of Second Generation Frontier Colonists and Population Redistribution changes in the Northern Ecuadorian Amazon frontier. Particularly in recent years, population growth, urbanization in the frontier. This paper uses longitudinal and multi-scale data on settler colonists

Lopez-Carr, David

102

The Singularity is Not Near: Slowing Growth of Wikipedia Bongwon Suh, Gregorio Convertino, Ed H. Chi, Peter Pirolli  

E-Print Network [OSTI]

. Chi, Peter Pirolli Palo Alto Research Center 3333 Coyote Hill Road, Palo Alto, CA, 94304 +1 (650 plateaued, indicating that it may have come against its limits to growth. We measure growth, population law, logistic model, Wikipedia, resistance, population 1. Introduction Many natural systems have

Chi, Ed Huai-hsin

103

Population and Climate Change:Population and Climate Change: Coupling Population Models withCoupling Population Models with  

E-Print Network [OSTI]

Coupling Population Models with Earth System ModelsEarth System Models Eugenia Kalnay, Safa Motesharrei, Jorge Rivas Change: Fully Coupling Population and Earth System Models" My research at the U. of Maryland #12

Kalnay, Eugenia

104

Sorghum Growth and Development  

E-Print Network [OSTI]

Sorghum is well adapted to Texas, and its ability to yield consistently makes it popular with growers. This publication discusses sorghum plant biology and growth....

Gerik, Tom; Bean, Brent W.; Vanderlip, Richard

2003-08-07T23:59:59.000Z

105

Strategic Growth Initiative (Michigan)  

Broader source: Energy.gov [DOE]

A joint venture between Michigan Department of Agriculture and Rural Development (MDARD) and the Michigan Economic Development Corporation (MEDC), the Strategic Growth Initiative Grant Program was...

106

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO[sub 2]F[sub 2] and H[sub 2]O) and hydrofluoric-acid-moderated uranium hexaflouride (UF[sub 6] and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % [sup 235]U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

107

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO{sub 2}F{sub 2} and H{sub 2}O) and hydrofluoric-acid-moderated uranium hexaflouride (UF{sub 6} and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % {sup 235}U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

108

IDAHO NATIONAL LABORATORY TRANSPORTATION TASK REPORT ON ACHIEVING MODERATOR EXCLUSION AND SUPPORTING STANDARDIZED TRANSPORTATION  

SciTech Connect (OSTI)

Following the defunding of the Yucca Mountain Project, it is reasonable to assume that commercial used fuel will remain in storage for the foreseeable future. This report proposes supplementing the ongoing research and development work related to potential degradation of used fuel, baskets, poisons, and storage canisters during an extended period of storage with a parallel path. This parallel path can assure criticality safety during transportation by implementing a concept that achieves moderator exclusion (no in-leakage of moderator into the used fuel cavity). Using updated risk assessment insights for additional technical justification and relying upon a component inside of the transportation cask that provides a watertight function, a strong argument can be made that moderator intrusion is not credible and should not be a required assumption for criticality evaluations during normal conditions of transportation. A demonstrating testing program supporting a detailed analytical effort as well as updated risk assessment insights can provide the basis for moderator exclusion during hypothetical accident conditions. This report also discusses how this engineered concept can support the goal of standardized transportation.

D.K. Morton

2011-09-01T23:59:59.000Z

109

Coriolis Effect on Dynamic Stall in a Vertical Axis Wind Turbine at Moderate Reynolds Number  

E-Print Network [OSTI]

axis wind turbines (VAWT) offer several advantages over horizontal axis wind turbines (HAWT), namely to yaw wind direction (because they are omnidirectional), and their increased power output in skewed flowCoriolis Effect on Dynamic Stall in a Vertical Axis Wind Turbine at Moderate Reynolds Number Hsieh

Colonius, Tim

110

Seven League Boots: A New Metaphor for Augmented Locomotion through Moderately Large Scale Immersive Virtual Environments  

E-Print Network [OSTI]

Seven League Boots: A New Metaphor for Augmented Locomotion through Moderately Large Scale boots. The key characteristic of this method is that it involves determining a user's intended direction virtual hallway, participants overwhelmingly preferred the seven league boots method to the other methods

Interrante, Victoria

111

Mapping daily snow//ice shortwave broadband albedo from Moderate Resolution Imaging Spectroradiometer (MODIS): The improved  

E-Print Network [OSTI]

and global energy balances when snow coverage is variable. In the polar regions, the high surface albedo acts the Advanced Very High Resolution Radiometer (AVHRR) satellite data in polar regions [De Abreu et al., 1994 variable in surface energy balance calculations. The Moderate Resolution Imaging Spectroradiometer (MODIS

Liang, Shunlin

112

Electrochemical studies of moderately boron doped polycrystalline diamond in non-aqueous solvent  

E-Print Network [OSTI]

Electrochemical studies of moderately boron doped polycrystalline diamond in non-aqueous solvent being marketed [83,84]. The first paper on the electrochemistry of boron doped polycrystalline diamond The electrochemistry of boron doped diamond is currently an active field of research. In the majority of studies

Bristol, University of

113

Original article Effects of moderate fat intake with different n-3 fatty  

E-Print Network [OSTI]

ratios on serum and structural lipids in rats L Frémont MT Gozzelino T Hojjat INRA, laboratoire de fatty acids (PUFA) on serum and membrane lipids in rats fed diets containing moderate levels of fats (6, which has a stimulating effect on triacylglycerol synthesis and secretion, was less incorporated

Boyer, Edmond

114

Probabilistic seismic risk analysis of existing buildings in regions with moderate seismicity  

E-Print Network [OSTI]

Probabilistic seismic risk analysis of existing buildings in regions with moderate seismicity C to apply an approach based on risk for the seismic assessment of existing buildings. In this innovative analytical seismic assessment methods, as the ratio between the capacity and the requirement of the current

Paris-Sud XI, Université de

115

Development of a Safeguards Approach for a Small Graphite Moderated Reactor and Associated Fuel Cycle Facilities  

E-Print Network [OSTI]

Small graphite-moderated and gas-cooled reactors have been around since the beginning of the atomic age. Though their existence in the past has been associated with nuclear weapons programs, they are capable of being used in civilian power programs...

Rauch, Eric B.

2010-07-14T23:59:59.000Z

116

Stream temperature responses to clearcut logging in British Columbia: the moderating influences of  

E-Print Network [OSTI]

Stream temperature responses to clearcut logging in British Columbia: the moderating influences the temperature responses of small, lake- headed streams to streamside timber harvesting. We examined the temperature patterns of two subboreal outlet streams in north-central British Columbia for 1 year before and 3

Hinch, Scott G.

117

Short term effects of moderate carbon prices on land use in the New Zealand emissions trading  

E-Print Network [OSTI]

Short term effects of moderate carbon prices on land use in the New Zealand emissions trading Zealand Emissions Trading Scheme (NZ ETS) was introduced through the Climate Change Response Act............................................................................ 14 #12;1 1 Introduction The New Zealand Emissions Trading Scheme (NZ ETS) was legislated through

Silver, Whendee

118

Some insight on why Bam (Iran) was destroyed by an earthquake of relatively moderate size  

E-Print Network [OSTI]

Some insight on why Bam (Iran) was destroyed by an earthquake of relatively moderate size Michel March 2006; accepted 29 March 2006; published 13 May 2006. [1] The Bam (Iran) earthquake of 2003. Hatzfeld, J. A. Jackson, and E. Haghshenas (2006), Some insight on why Bam (Iran) was destroyed

Hatzfeld, Denis

119

5022 Biochemistry 1983, 22, 5022-5028 Conversion of Nerve Growth Factor-Receptor Complexes to a Slowly  

E-Print Network [OSTI]

5022 Biochemistry 1983, 22, 5022-5028 Conversion of Nerve Growth Factor-Receptor Complexes to a Slowly Dissociating, Triton X-100 Insoluble State by Anti Nerve Growth Factor Antibodied Ronald D. Vale and Eric M. Shooter* ABSTRACT: Two populations of nerve growth factor (NGF) receptors can be distinguished

Vale, Ronald D.

120

Combating the growth of slums using for-profit social business models  

E-Print Network [OSTI]

With 1 billion people living in the slums of cities today and no signs of a decrease in the rate of urbanization and population growth, it is obvious that new approaches to combating poverty and the global housing crisis ...

Fusaro, Kurtis C

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Avian populations of urban woodlands: comparisons, habitat requirements, and management implications  

E-Print Network [OSTI]

woodland transects. The bird populations of three urban areas were compared. As amount of vegetation increased, number of species, total individuals, and bird species diversity also increased. Urban residential areas were compared to Hensel Park, a...-sized natural area. Numbers of individuals and species were much lower in the large- sized natural area. Nany species preferred urban woodlands. Open and closed parkland transects were compared to the moderately and heavily vegetated urban areas, Species...

Mitchnick, Alan David

1979-01-01T23:59:59.000Z

122

Causes and consequences of complex population dynamics in an annual plant, Cardamine pensylvanica  

SciTech Connect (OSTI)

The relative importance of density-dependent and density-independent factors in determining the population dynamics of plants has been widely debated with little resolution. In this thesis, the author explores the effects of density-dependent population regulation on population dynamics in Cardamine pensylvanica, an annual plant. In the first chapter, she shows that experimental populations of C. pensylvanica cycled from high to low density in controlled constant-environment conditions. These cycles could not be explained by external environmental changes or simple models of direct density dependence (N{sub t+1} = f[N{sub t}]), but they could be explained by delayed density dependence (N{sub t+1} = f[N{sub t}, N{sub t+1}]). In the second chapter, she shows that the difference in the stability properties of population growth models with and without delayed density dependence is due to the presence of Hopf as well as slip bifurcations from stable to chaotic population dynamics. She also measures delayed density dependence due to effects of parental density on offspring quality in C. pensylvanica and shows that this is large enough to be the cause of the population dynamics observed in C. pensylvanica. In the third chapter, the author extends her analyses of density-dependent population growth models to include interactions between competing species. In the final chapter, she compares the effects of fixed spatial environmental variation and variation in population size on the evolutionary response of C. pensylvanica populations.

Crone, E.E.

1995-11-08T23:59:59.000Z

123

Gamma-ray burst populations.  

E-Print Network [OSTI]

??Over the last fifty years the field of gamma-ray bursts has shown incredible growth, but the amassing of data has also left observers and theorists (more)

Virgili, Francisco J.

2011-01-01T23:59:59.000Z

124

Population, Economy and Energy Uses Influence on Sulfur Emissions in the United States Since 1900  

E-Print Network [OSTI]

. The change in sulfur emissions is formulated as a function of changes in these trends. During this century, population growth and increasing economic activity have put upward pressure on sulfur emissions. The declining energy intensity of the economy...

Kissock, J. K.; Husar, R. B.

125

The economics of housing lower income populations in South Africa : challenges and opportunities in KwaZulu-Natal  

E-Print Network [OSTI]

Since 1994, approximately three million homes have been built for lower income households in South Africa, but as a result of population growth, immigration, increasing urbanization and systemic inefficiencies, such as ...

Barrire, Marcella M

2013-01-01T23:59:59.000Z

126

Modeling tin whisker growth.  

SciTech Connect (OSTI)

Tin, lead, and lead-tin solders are the most commonly used solders due to their low melting temperatures. However, due to the toxicity problems, lead must now be removed from solder materials. This has lead to the re-emergence of the issue of tin whisker growth. Tin whiskers are a microelectronic packaging issue because they can lead to shorts if they grow to sufficient length. However, the cause of tin whisker growth is still not well understood and there is lack of robust methods to determine when and if whiskering will be a problem. This report summarizes some of the leading theories on whisker growth and attempts to provide some ideas towards establishing the role microstructure plays in whisker growth.

Weinberger, Christopher Robert

2013-08-01T23:59:59.000Z

127

Planar elliptic growth  

SciTech Connect (OSTI)

The planar elliptic extension of the Laplacian growth is, after a proper parametrization, given in a form of a solution to the equation for areapreserving diffeomorphisms. The infinite set of conservation laws associated with such elliptic growth is interpreted in terms of potential theory, and the relations between two major forms of the elliptic growth are analyzed. The constants of integration for closed form solutions are identified as the singularities of the Schwarz function, which are located both inside and outside the moving contour. Well-posedness of the recovery of the elliptic operator governing the process from the continuum of interfaces parametrized by time is addressed and two examples of exact solutions of elliptic growth are presented.

Mineev, Mark [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

128

FGF growth factor analogs  

DOE Patents [OSTI]

The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY); Takahashi, Kazuyuki (Germantown, MD)

2012-07-24T23:59:59.000Z

129

Policy on the Moderation of Assessment: Approved by the Senate, 22 May 2013 Heriot-Watt University  

E-Print Network [OSTI]

1 Policy on the Moderation of Assessment: Approved by the Senate, 22 May 2013 Heriot-Watt University Policy on the Moderation of Assessment With diversity in form of assessment across multi in all disciplines, across all Schools and in all modes or locations of study. The University Policy

Painter, Kevin

130

Goal pursuit is more than planning: the moderating role of regulatory fit  

E-Print Network [OSTI]

in goal pursuit, and are more open to changes as well as activity and object substitutions in satisfactory situations. Regulatory orientation moderates the sunk cost effects associated with unsatisfactory situations (Higgins et al. 2001). Sunk cost... investments or costs than the previous plan. Promotion-focused individuals are less likely than prevention-focused individuals to demonstrate sunk cost effects when the sunk cost error is framed as an error of omission (e.g., the error of missing a great...

Tam, Wing Yin Leona

2006-10-30T23:59:59.000Z

131

Hanford Area 1990 population and 50-year projections. [Appendix contains computer programming for population projections and graphs showing them by grid areas  

SciTech Connect (OSTI)

The complex and comprehensive safety analysis activities carried out at Hanford for nonreactor nuclear facilities require data from a number of scientific and engineering disciplines. The types of data that are required include data pertaining to current population and population projections. The types of data found in this document include 1990 census totals for residential population within a 50-mile radius of the 100-N, 200, 300, and 400 Area meteorological towers. This document also contains 50-year projections for residential populations within a 50-mile radius of these four meteorological towers. The analysis of population projections indicates that residential population within a 50-mile radius of the four meteorological towers in question will continue to grow through 2040, although at a slower rate each decade. In all cases, the highest growth is projected for the decade ending in the year 2000. The annual growth rate for this period is projected to be 0.646, 0.633, 0.543, and 0.570 in the 100-N, 200, 300, and 400 Areas, respectively. By 2040, these growth rates are projected to drop to 0.082, 0.068, 0.078, 0.078, respectively. 4 refs., 1 figs., 4 tabs.

Beck, D.M.; Scott, M.J.; Shindle, S.F.; Napier, B.A.; Thurman, A.G.; Batishko, N.C. (Pacific Northwest Lab., Richland, WA (United States)); Davis, M.D. (Westinghouse Hanford Co., Richland, WA (United States)); Pittenger, D.B. (Demographics Lab., Olympia, WA (United States))

1991-10-01T23:59:59.000Z

132

POPULATION GEOGRAPHY Instructor: Dr. Carr  

E-Print Network [OSTI]

in a year · Crude rates may be misleading: - e.g., CDR, US (8) vs. Mexico (5) -What's going on here? -Are: #12;HOW DOES POPULATION CHANGE? #12;Population Change = Fertility ­ Mortality +/- Migration #12;Crude Birth Rate (CBR): Births/1000 individuals in a year Crude Death Rate (CDR): Deaths/1000 individuals

Lopez-Carr, David

133

Perturbation Theory for Population Dynamics  

E-Print Network [OSTI]

We prove that a recently proposed homotopy perturbation method for the treatment of population dynamics is just the Taylor expansion of the population variables about initial time. Our results show that this perturbation method fails to provide the global features of the ecosystem dynamics.

Francisco M. Fernandez

2007-12-20T23:59:59.000Z

134

Growth and nucleation regimes in boron doped silicon by dynamical x-ray diffraction  

SciTech Connect (OSTI)

The oxygen precipitation of highly (17.5 m? cm) and moderately (4.5 ? cm) boron (B) doped silicon (Si) crystals at 780?C is investigated by following in-situ the evolution of diffraction Pendellsung oscillations. All samples show an initial diffusion-driven growth process which may change over into Ostwald ripening. For the highly doped sample and involving a nucleation step at 450?C for 30?h, the precipitate density ? is enhanced by a factor of 8 as compared to the moderately doped sample. The influence of a high B concentration on ? is dramatically higher for the samples directly heated to 780?C, where an enhancement factor of 80 is found. Considering Ostwald ripening as a second growth regime reveals consistent ripening rates and surface energies ? with those found at 900?C in a previous publication.

Will, J., E-mail: johannes.will@fau.de; Grschel, A.; Bergmann, C.; Weier, M.; Magerl, A. [Crystallography and Structural Physics, University of Erlangen-Nrnberg, Staudtstr. 3, 91058 Erlangen (Germany)

2014-09-15T23:59:59.000Z

135

Research District Seeing Growth  

SciTech Connect (OSTI)

Monthly economic diversity column for the Tri-City Herald (May 2012) - excerpt follows: Its been a while since Ive updated you on the Tri-Cities Research District, most certainly not for lack of new activity over the past several months. In fact, much has happened, and theres more to come. I think many of us see new land development and construction as indicative of current or impending economic growth. So those of you who have ventured into North Richland either via Stevens Drive or George Washington Way lately have probably begun sensing and anticipating that such growth is afoot.

Madison, Alison L.

2012-05-13T23:59:59.000Z

136

Simulation of host-parasite interactions within a resource management framework: impact of brucellosis on bison population dynamics  

E-Print Network [OSTI]

or commensal associations-the endpoint predicted by conventional dogma. (3) There is extreme polymorphism in the genetic systems controlling both specific and non-specific host responses to parasitic invasion in natural populations. (4) The observed... be "ideal" for regulating host populations: (1) high case mortality relative to the intrinsic growth rate of the disease-free host population, (2) relatively short incubation periods, (3) long duration of infection, and (4) the ability to decrease...

Peterson, Markus John

1990-01-01T23:59:59.000Z

137

Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials  

DOE Patents [OSTI]

Method for collecting and concentrating charged species, specifically, contaminant species in a medium, preferably soil. The method utilizes electrokinesis to drive contaminant species into and through a bed adjacent to a drive electrode. The bed comprises a moderately electrically conductive adsorbent material which is porous and is infused with water or other solvent capable of conducting electrical current. The bed material, preferably activated carbon, is easily removed and disposed of. Preferably, where activated carbon is used, after contaminant species are collected and concentrated, the mixture of activated carbon and contaminant species is removed and burned to form a stable and easily disposable waste product.

Lindgren, Eric R. (Albuquerque, NM); Mattson, Earl D. (Idaho Falls, ID)

2001-01-01T23:59:59.000Z

138

The use of isotopically tailored boron for advanced neutron shielding and moderating applications  

E-Print Network [OSTI]

cm. The incident neutron flux was measured first without any shielding slab between the source and the detector. The first slab of shielding material was then placed nearest to the source and the transmitted intensity was measured by the detector... effects of nuclear radiation. This analysis examined the use of isotopically tailored boron for the purpose of moderating, reflecting and shielding neutrons. The source of neutrons in this study varied in energy from 0. 2 keV to 14 MeV. The material...

Deere, Laura Marie

2012-06-07T23:59:59.000Z

139

Case studies of low-to-moderate temperature hydrothermal energy development  

SciTech Connect (OSTI)

Six development projects are examined that use low- (less than 90/sup 0/C (194/sup 0/F)) to-moderate (90 to 150/sup 0/C (194 to 302/sup 0/F)) temperature geothermal resources. These projects were selected from 22 government cost-shared projects to illustrate the many facets of hydrothermal development. The case studies describe the history of this development, its exploratory methods, and its resource definition, as well as address legal, environmental, and institutional constraints. A critique of procedures used in the development is also provided and recommendations for similar future hydrothermal projects are suggested.

Not Available

1981-10-01T23:59:59.000Z

140

Growth & Development / Parental Care  

E-Print Network [OSTI]

participate; if one parents is lost, fledging rates usually drop #12;Winkler reduced clutch size from 5 to 3Growth & Development / Parental Care #12;Embryonic Development Although the sequence of 42 stages the egg The hatching muscle helps the chick break out of the egg Parents typically dispose of the egg

Butler, Christopher J.

Note: This page contains sample records for the topic "moderate population growth" 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

Sea-Change from Bush to Clinton: Setting a New Course for Offshore Oil Development and U.S. Energy Policy  

E-Print Network [OSTI]

renewable energy, advanced nuclear reactors, fu- sion, coal, natural gas, a natural resource policy, basic science and moderating world population growth." ' '

Wilder, Robert Jay

1993-01-01T23:59:59.000Z

142

Standard Practice for Design of Surveillance Programs for Light-Water Moderated Nuclear Power Reactor Vessels  

E-Print Network [OSTI]

1.1 This practice covers procedures for designing a surveillance program for monitoring the radiation-induced changes in the mechanical properties of ferritic materials in light-water moderated nuclear power reactor vessels. This practice includes the minimum requirements for the design of a surveillance program, selection of vessel material to be included, and the initial schedule for evaluation of materials. 1.2 This practice was developed for all light-water moderated nuclear power reactor vessels for which the predicted maximum fast neutron fluence (E > 1 MeV) at the end of license (EOL) exceeds 1 1021 neutrons/m2 (1 1017 n/cm2) at the inside surface of the reactor vessel. 1.3 This practice applies only to the planning and design of surveillance programs for reactor vessels designed and built after the effective date of this practice. Previous versions of Practice E185 apply to earlier reactor vessels. 1.4 This practice does not provide specific procedures for monitoring the radiation induced cha...

American Society for Testing and Materials. Philadelphia

2010-01-01T23:59:59.000Z

143

Nanoparticle growth Controlled Growth of Platinum Nanoparticles on Strontium  

E-Print Network [OSTI]

Nanoparticle growth Controlled Growth of Platinum Nanoparticles on Strontium Titanate Nanocubes nanoparticles platinum strontium titanate X-ray analysis 750 ? 2009 Wiley-VCH Verlag GmbH & Co. KGa

Poeppelmeier, Kenneth R.

144

Hungry for Respect: The Moderating Roles of Status and Justice Orientation on Relationships between Interpersonal Justice and Emotions  

E-Print Network [OSTI]

?s self-concept (Bies, 2001; Tyler & Lind, 1992), and self-enhancing events have been linked to positive affective responses (Kwang & Swann, 2010). It is therefore likely that interpersonal justice will also influence positive emotions. Accordingly, I..., Kraimer, & Liden, 2001), an outcome of fairness (Lind & Tyler, 1988), and a moderator of fairness effects (Diekmann, Sondak, & Bearsness, 2007). Scholars have specifically found that status moderates the effects of interpersonal justice. A study...

Stoverink, Adam C

2013-07-31T23:59:59.000Z

145

Small Enterprise Growth Fund (Maine)  

Broader source: Energy.gov [DOE]

The Small Enterprise Growth Fund is a professionally-managed venture capital fund that invests in Maine companies which demonstrate high potential for growth and public benefit. The fund has...

146

Solution of the Kramers' problem about isothermal sliding of moderately dense gas with accomodation boundary conditions  

E-Print Network [OSTI]

Half-space boundary Kramers' problem about isothermal sliding of moderate dense gas with accomodation boundary conditions along a flat firm surface is solving. The new method of the solution of boundary problems of the kinetic theory is applied (see JVMMF, 2012, 52:3, 539-552). The method allows to receive the solution with arbitrary degree of accuracy. The idea of representation of boundary condition on distribution function in the form of source in the kinetic equation serves as the basis for the method mentioned above. By means of Fourier integrals the kinetic equation with a source comes to the Fredholm integral equation of the second kind. The solution has been received in the form of Neumann's number.

A. V. Latyshev; A. D. Kurilov

2014-12-30T23:59:59.000Z

147

Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities  

E-Print Network [OSTI]

The properties of pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities are studied within a model of the Nambu--Jona-Lasinio type. Our previous analysis is extended to Goldstone bosons with hidden flavor and to higher-lying modes which stay massive in the chiral limit. The bosons are constructed explicitly by solving the Bethe-Salpeter equation for quark-quark scattering in random phase approximation. The masses and weak decay constants of the Goldstone bosons are found in good agreement with predictions from the low-energy effective theory. In the non-Goldstone sector we find an SU(3) octet which is weakly bound, while the singlet appears to be unbound.

Verena Kleinhaus; Michael Buballa

2008-08-26T23:59:59.000Z

148

Pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities  

E-Print Network [OSTI]

The properties of pseudoscalar bosonic excitations in the color-flavor locked phase at moderate densities are studied within a model of the Nambu--Jona-Lasinio type. Our previous analysis is extended to Goldstone bosons with hidden flavor and to higher-lying modes which stay massive in the chiral limit. The bosons are constructed explicitly by solving the Bethe-Salpeter equation for quark-quark scattering in random phase approximation. The masses and weak decay constants of the Goldstone bosons are found in good agreement with predictions from the low-energy effective theory. In the non-Goldstone sector we find an SU(3) octet which is weakly bound, while the singlet appears to be unbound.

Kleinhaus, Verena

2008-01-01T23:59:59.000Z

149

Standard Guide for In-Service Annealing of Light-Water Moderated Nuclear Reactor Vessels  

E-Print Network [OSTI]

1.1 This guide covers the general procedures to be considered for conducting an in-service thermal anneal of a light-water moderated nuclear reactor vessel and demonstrating the effectiveness of the procedure. The purpose of this in-service annealing (heat treatment) is to improve the mechanical properties, especially fracture toughness, of the reactor vessel materials previously degraded by neutron embrittlement. The improvement in mechanical properties generally is assessed using Charpy V-notch impact test results, or alternatively, fracture toughness test results or inferred toughness property changes from tensile, hardness, indentation, or other miniature specimen testing (1). 1.2 This guide is designed to accommodate the variable response of reactor-vessel materials in post-irradiation annealing at various temperatures and different time periods. Certain inherent limiting factors must be considered in developing an annealing procedure. These factors include system-design limitations; physical constrain...

American Society for Testing and Materials. Philadelphia

2003-01-01T23:59:59.000Z

150

Analyses of regenerative wave patterns in adult hair follicle populations reveal  

E-Print Network [OSTI]

Analyses of regenerative wave patterns in adult hair follicle populations reveal macro of Medicine, University of Southern California, Los Angeles, CA, USA ABSTRACT The control of hair growth tools. Complex hair cycle domains and regenerative hair waves are present in normal adult (> 2 month

Chuong, Cheng-Ming

151

A Unifying Theory for Scaling Laws of Human Populations  

E-Print Network [OSTI]

The spatial distribution of people exhibits clustering across a wide range of scales, from household (~$10^{-2}$ km) to continental (~$10^4$ km) scales. Empirical data indicates simple power-law scalings for the size distribution of cities (known as Zipf's law), the geographic distribution of friends, and the population density fluctuations as a function of scale. We derive a simple statistical model that explains all of these scaling laws based on a single unifying principle involving the random spatial growth of clusters of people on all scales. The model makes important new predictions for the spread of diseases and other social phenomena.

Lin, Henry W

2015-01-01T23:59:59.000Z

152

Identification of anthropogenic and natural dust sources using Moderate Resolution Imaging Spectroradiometer (MODIS)  

E-Print Network [OSTI]

of West Africa, which includes one of the most active natural dust sources and the highest population density on the continent, are processed. Sources are identified on the basis of the persistence in the western United States to expansion of livestock grazing in the early twentieth century. In West Africa

153

The stellar population of bulges  

E-Print Network [OSTI]

This review summarizes the properties of the stellar population in bulges as observed in nearby or distant spiral galaxies. It gives a particular emphasis to the comparison with elliptical galaxies, when possible. The criteria of sample selection and choices in data analysis are addressed when they may be involved in discrepant results reached by different studies.

P. Jablonka

2007-01-07T23:59:59.000Z

154

Population and Climate Change:Population and Climate Change: Coupling Population Models withCoupling Population Models with  

E-Print Network [OSTI]

carbon over the next 40 years as adopting low-carbon technologies Concluded: Family planning is cost / Capita Outputs: 1. Emissions CO2, Methane, etc 2. Waste Products Garbage, Toxics, etc 3. Surface Changes are needed to: · Stabilize population and · Stabilize industrial production per person · Adopt technologies

Kalnay, Eugenia

155

Population Displacements Associated with Environmentally  

E-Print Network [OSTI]

Socio economic Impacts Enviro Impacts Dam Climate Change Fresh H20 Salinization Drought Flood infrastructure Climate Impact(s) Infrastructure development objectives Socio economic Impacts Enviro Impacts ­ Environmental impacts of major infrastructure projects 2 P l i di l i d i h l i f2. Population displacements

Columbia University

156

Population Ecology ISSN 1438-3896  

E-Print Network [OSTI]

1 23 Population Ecology ISSN 1438-3896 Popul Ecol DOI 10.1007/s10144-012-0352-3 Impacts of enemy of Population Ecology and Springer Japan. This e-offprint is for personal use only and shall not be self of Population Ecology and Springer Japan 2012 Abstract In this study, we used data from both experi- ments

de Aguiar, Marcus A. M.

157

Shrinking Global Population: A futuristic scenario  

E-Print Network [OSTI]

global population it will not be a game-changer. #12;Measures for changes in total births 1. TotalShrinking Global Population: A futuristic scenario or a current challenge. Hillel Bar of RSAI - Atlanta November 15, 2013 #12;The evolution of global population Year Global Population

Nagurney, Anna

158

Regional companies eye growth  

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 JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromising ScienceRecentRegional companies eye growth Regional

159

Growth, microstructure, and luminescent  

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 ProposedUsingFun with Big Sky LearningGetGraphene'sEMSL barium oxideGrowth,

160

EO 12898: Environmental Justice in Minority Populations and Low...  

Office of Environmental Management (EM)

EO 12898: Environmental Justice in Minority Populations and Low-Income Populations EO 12898: Environmental Justice in Minority Populations and Low-Income Populations To focus...

Note: This page contains sample records for the topic "moderate population growth" 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

The Neutron Energy Spectrum Study from the Phase II Solid Methane Moderator at the LENS Neutron Source  

E-Print Network [OSTI]

Neutron energy spectrum measurements from a solid methane moderator were performed at the Low Energy Neutron Source (LENS) at Indiana University Cyclotron Facility (IUCF) to verify our neutron scattering model of solid methane. The time-of-flight method was used to measure the energy spectrum of the moderator in the energy range of 0.1$meV\\sim$ 1$eV$. Neutrons were counted with a high efficiency $^{3}{He}$ detector. The solid methane moderator was operated in phase II temperature and the energy spectra were measured at the temperatures of 20K and 4K. We have also tested our newly-developed scattering kernels for phase II solid methane by calculating the neutron spectral intensity expected from the methane moderator at the LENS neutron source using MCNP (Monte Carlo N-particle Transport Code). Within the expected accuracy of our approximate approach, our model predicts both the neutron spectral intensity and the optimal thickness of the moderator at both temperatures. The predictions are compared to the measured energy spectra. The simulations agree with the measurement data at both temperatures.

Yunchang Shin; W. Mike Snow; Christopher M. Lavelle; David V. Baxter; Xin Tong; Haiyang Yan; Mark Leuschner

2007-11-19T23:59:59.000Z

162

When tree rings behave like foam: moderate historical decrease in the mean ring density of common beech paralleling a strong historical growth increase  

E-Print Network [OSTI]

to wood quality, and biomass/carbon sequestration issues. The anecdotic available material suggests an issue for forest carbon accounting. Keywords: Fagus sylvatica; wood density; X-ray microdensitometry

Recanati, Catherine

163

Tuning calcite morphology and growth acceleration by a rational design of highly stable protein-mimetics  

SciTech Connect (OSTI)

In nature, proteins play a significant role in biomineral formation. One of the ultimate goals of bioinspired materials science is to develop highly stable synthetic molecules that mimic the function of these natural proteins by controlling crystal formation. Here, we demonstrate that both the morphology and the degree of acceleration or inhibition observed during growth of calcite in the presence of peptoids can be rationally tuned by balancing the electrostatic interactions (EI) and hydrophobic interactions (HI), with HI playing the dominant role. While either strong EI or HI inhibit growth and suppress (104) face expression, correlations between peptoid-crystal binding energies and observed changes in calcite growth indicate moderate EI allow peptoids to weakly adsorb while moderate HI cause disruption of surface-adsorbed water layers, leading to growth acceleration with retained expression of (104) faces. This study provides fundamental principles for designing peptoids as crystallization promoters, and offers a straightforward screening method based on macroscopic crystal morphology. Because peptoids are sequence-specific, highly stable, and easily synthesized, peptoid-enhanced crystallization offers a broad range of potential applications.

Chen, Chunlong; Qi, Jiahui; Tao, Jinhui; Zuckermann, Ronald; De Yoreo, James J.

2014-09-05T23:59:59.000Z

164

Argentina: export-biased growth versus import-biased growth  

E-Print Network [OSTI]

ARGENTINA. : EXPORT-BIASED GROWTH VERSUS IMPORT-BIASED GROWTH A Thesis by MICHAEL PAGE BRADLEY Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1972... Major Subject: Economics ARGENTINA: EXPORT-BIASED GROWTH VERSUS IMPORT-BIASED GROWTH A Thesis by MICHAEL PAGE BRADLEY Approved as to style and content by: rman o omit ee ea o Depar men em er Mem er May 1&72 ABSTRACT Argentina: Export...

Bradley, Michael Page

1972-01-01T23:59:59.000Z

165

Actinide destruction and power peaking analysis in a 1000 MWt advanced burner reactor using moderated heterogeneous target assemblies  

SciTech Connect (OSTI)

The purpose of this research was to determine the effect of moderated heterogeneous subassemblies located in the core of a sodium-cooled fast reactor on minor actinide (MA) destruction rates over the lifecycle of the core. Additionally, particular emphasis was placed on the power peaking of the pins and the assemblies with the moderated targets as compared to standard unmoderated heterogeneous targets and a core without MA targets present. Power peaking analysis was performed on the target assemblies and on the fuel assemblies adjacent to the targets. The moderated subassemblies had a marked improvement in the overall destruction of heavy metals in the targets. The design with acceptable power peaking results had a 12.25% greater destruction of heavy metals than a similar ex-core unmoderated assembly. The increase in minor actinide destruction was most evident with americium where the moderated assemblies reduced the initial amount to less than 3% of the initial loading over a period of five years core residency. In order to take advantage of the high minor actinide destruction and minimize the power peaking effects, a hybrid scenario was devised where the targets resided ex-core in a moderated assembly for the first 506.9 effective full power days (EFPDs) and were moved to an in-core arrangement with the moderated targets removed for the remainder of the lifecycle. The hybrid model had an assembly and pin power peaking of less than 2.0 and a higher heavy metal and minor actinide destruction rate than the standard unmoderated heterogeneous targets either in-core or ex-core. The hybrid model has a 54.5% greater Am reduction over the standard ex-core model. It also had a 27.8% greater production of Cm and a 41.5% greater production of Pu than the standard ex-core model. The radiotoxicity of the targets in the hybrid design was 20% less than the discharged standard ex-core targets.

Kenneth Allen; Travis Knight; Samuel Bays

2011-05-01T23:59:59.000Z

166

Robust Growth-Optimal Portfolios  

E-Print Network [OSTI]

May 24, 2014 ... Adopting standard terminology, we refer to the portfolio managed under the Kelly strategy as the growth-optimal portfolio. This portfolio displays...

2014-05-24T23:59:59.000Z

167

Development of Probabilistic Design Basis Earthquake (DBE) Parameters for Moderate and High Hazard Facilities at INEEL  

SciTech Connect (OSTI)

Design Basis Earthquake (DBE) horizontal and vertical response spectra are developed for moderate and high hazard facilities or Performance Categories (PC) 3 and 4, respectively, at the Idaho National Engineering and Environmental Laboratory (INEEL). The probabilistic DBE response spectra will replace the deterministic DBE response spectra currently in the U.S. Department of Energy Idaho Operations Office (DOE-ID) Architectural Engineering Standards that govern seismic design criteria for several facility areas at the INEEL. Probabilistic DBE response spectra are recommended to DOE Naval Reactors for use at the Naval Reactor Facility at INEEL. The site-specific Uniform Hazard Spectra (UHS) developed by URS Greiner Woodward Clyde Federal Services are used as the basis for developing the DBE response spectra. In 1999, the UHS for all INEEL facility areas were recomputed using more appropriate attenuation relationships for the Basin and Range province. The revised UHS have lower ground motions than those produced in the 1996 INEEL site-wide probabilistic ground motion study. The DBE response spectra were developed by incorporating smoothed broadened regions of the peak accelerations, velocities, and displacements defined by the site-specific UHS. Portions of the DBE response spectra were adjusted to ensure conservatism for the structural design process.

S. M. Payne; V. W. Gorman; S. A. Jensen; M. E. Nitzel; M. J. Russell; R. P. Smith

2000-03-01T23:59:59.000Z

168

Large climate-moderating envelopes for enclosed structures: a preliminary evaluation of energy conservation potential  

SciTech Connect (OSTI)

An investigation was made of the basic impacts of putting a large secondary enclosure around a number of functions and thereby creating a Large Climate Moderating Envelope (LCME). This study is a preliminary estimate of the energy conservation benefits of an LCME. A hypothetical LMCE design was chosen and a coupled fluid dynamic and energy transport analysis was performed to estimate the energy conservation potential of this design. The heat transfer models included insolation, outside air temperature and wind, thermal radiation exchange with the sky, and between the fabric and ground and thermal storage in the earth mass beneath the LCME. The energy transported within the fluid by the buoyancy driven circulation was modeled as an incompressible fluid utilizing the Boussinesq approximation. The climatic conditions were assumed to vary in smooth repeating daily cycles. The numerical simulation of climatic variation was continued until the results within the LCME achieved a repeating daily cycle. The results for selected seasonally characteristic days were utilized to estimate the annual energy consumption of structures within an LCME relative to similar structures exposed to the exterior environment. The relative annual energy savings for summer-dominated climates was estimated to be approx. 70%. The energy savings for a winter-dominated climate LCME were estimated to be somewhat smaller but the LCME concept could offer significant benefits for agricultural applications for this type of climate.

Wendt, R.L.; Giles, G.E.; Park, J.E.

1981-12-01T23:59:59.000Z

169

Multiplier, moderator, and reflector materials for lithium-vanadium fusion blankets.  

SciTech Connect (OSTI)

The self-cooled lithium-vanadium fusion blanket concept has several attractive operational and environmental features. In this concept, liquid lithium works as the tritium breeder and coolant to alleviate issues of coolant breeder compatibility and reactivity. Vanadium alloy (V-4Cr-4Ti) is used as the structural material because of its superior performance relative to other alloys for this application. However, this concept has poor attenuation characteristics and energy multiplication for the DT neutrons. An advanced self-cooled lithium-vanadium fusion blanket concept has been developed to eliminate these drawbacks while maintaining all the attractive features of the conventional concept. An electrical insulator coating for the coolant channels, spectral shifter (multiplier, and moderator) and reflector were utilized in the blanket design to enhance the blanket performance. In addition, the blanket was designed to have the capability to operate at high loading conditions of 2 MW/m{sup 2} surface heat flux and 10 MW/m{sup 2} neutron wall loading. This paper assesses the spectral shifter and the reflector materials and it defines the technological requirements of this advanced blanket concept.

Gohar, Y.; Smith, D. L.

1999-10-07T23:59:59.000Z

170

Aerosols in the Caribbean MidAtlantic Region as Observed with the EOS Moderate Resolution Imaging Spectroradiometer (MODIS)  

E-Print Network [OSTI]

Aerosols in the Caribbean MidAtlantic Region as Observed with the EOS Moderate Resolution Imaging the year, changes in precipitation patterns and greater health risks for the Caribbean region during the spring months. Keywords: MODIS, MODIS Conversion Toolkit, aerosols, Caribbean region INTRODUCTION

Gilbes, Fernando

171

Cognitive determinants of social functioning after a first-ever mild to moderate stroke at vocational age  

E-Print Network [OSTI]

1 Cognitive determinants of social functioning after a first-ever mild to moderate stroke, 3 Assia Jaillard MD PhD 1, 2 1. Stroke Unit, University Hospital - Joseph Fourier University. INSERM CIC 003, University Hospital Grenoble Corresponding author: Marc Hommel MD Stroke Unit, University

Boyer, Edmond

172

Strong words or moderate words: A comparison of the reliability and validity of responses on attitude scales  

E-Print Network [OSTI]

statistically significant difference was found between one pair of validity coefficients (r = 0.69; r = 0.15; Z = 2.60, p [less than or equal to] 0.01) and that was in the direction opposite from expected, favoring moderately worded items over strongly worded...

Frey, Bruce B.; Edwards, Lisa M.

2011-01-01T23:59:59.000Z

173

Background: Beta-thalassemia is a common genetically inherited blood disorder affecting 4.83% of the world's population. It is caused by defective beta-globin synthesis and has diverse clinical phenotypes ranging  

E-Print Network [OSTI]

ABSTRACT Background: Beta-thalassemia is a common genetically inherited blood disorder affecting 4.83% of the world's population. It is caused by defective beta-globin synthesis and has diverse clinical phenotypes ranging from severe to mild. In beta-thalassemia intermedia (-TI), the moderate form of the disease

Ollivier-Gooch, Carl

174

Arthropod population and community dynamics in turfgrass  

E-Print Network [OSTI]

Non-target arthropod and nematode populations in ographics. fungal and nematode treated bermudagrass were contrasted with populations in a chlorpyrifos and an untreated control treatment. Fifty-five arthropod families or suborder, herein referred...

Wang, Yong

1998-01-01T23:59:59.000Z

175

CALIFORNIA SMART GROWTH ENERGY SAVINGS  

E-Print Network [OSTI]

(particularly autos) comprises a large share of total energy consumption, its reduction through more compact in transportation energy consumption resulting from Smart Growth planning. Since energy consumed by transportationCALIFORNIA ENERGY COMMISSION CALIFORNIA SMART GROWTH ENERGY SAVINGS MPO SURVEY FINDINGS SEPTEMBER

176

Diffusion-driven precipitate growth and ripening of oxygen precipitates in boron doped silicon by dynamical x-ray diffraction  

SciTech Connect (OSTI)

X-ray Pendellsung fringes from three silicon single crystals measured at 900?C are analyzed with respect to density and size of oxygen precipitates within a diffusion-driven growth model and compared with TEM investigations. It appears that boron doped (p+) material shows a higher precipitate density and a higher strain than moderately (p-) boron crystals. In-situ diffraction reveals a diffusion-driven precipitate growth followed by a second growth regime in both materials. An interpretation of the second growth regime in terms of Ostwald ripening yields surface energy values (around 70?erg/cm{sup 2}) similar to published data. Further, an increased nucleation rate by a factor of ?13 is found in the p+ sample as compared to a p- sample at a nucleation temperature of 450?C.

Will, J., E-mail: will@krist.uni-erlangen.de; Grschel, A.; Bergmann, C.; Magerl, A. [Crystallography and Structural Physics, University of Erlangen-Nrnberg, Staudtstr. 3, 91058 Erlangen (Germany); Spiecker, E. [Center for Nanoanalysis and Electron Microscopy, University of Erlangen-Nrnberg, Cauerstr. 6, 91058 Erlangen (Germany)

2014-03-28T23:59:59.000Z

177

Effects of population and affluence on CO{sub 2} emissions  

SciTech Connect (OSTI)

The authors developed a stochastic version of the IMpact = Population-Affluence-Technology (IPAT) model to estimate the effects of population, affluence, and technology on national CO{sub 2} emissions.Results suggest that, for population, there are diseconomies of scale for the largest nations that are not consistent with the assumption of direct proportionality (log-linear effects) common to most previous research. In contrast, the effects of affluence on CO{sub 2} emissions appear to reach a maximum at about $10,000 in per-capita gross domestic product and to decline at higher levels of affluence. These results confirm the general value of the IPAT model as a starting point for understanding the anthropogenic driving forces of global change and suggest that population and economic growth anticipated over the next decade will exacerbate greenhouse gas emissions. 42 refs., 2 figs., 2 tabs.

Dietz, T. [George Mason Univ., Fairfax, VA (United States)] [George Mason Univ., Fairfax, VA (United States); Rosa, E.A. [Washington State Univ., Pullman, WA (United States)] [Washington State Univ., Pullman, WA (United States)

1997-01-07T23:59:59.000Z

178

FY 2012 USED FUEL DISPOSITION CAMPAIGN TRANSPORTATION TASK REPORT ON INL EFFORTS SUPPORTING THE MODERATOR EXCLUSION CONCEPT AND STANDARDIZED TRANSPORTATION  

SciTech Connect (OSTI)

Following the defunding of the Yucca Mountain Project, it is reasonable to assume that commercial used fuel will remain in storage for a longer time period than initially assumed. Previous transportation task work in FY 2011, under the Department of Energys Office of Nuclear Energy, Used Fuel Disposition Campaign, proposed an alternative for safely transporting used fuel regardless of the structural integrity of the used fuel, baskets, poisons, or storage canisters after an extended period of storage. This alternative assures criticality safety during transportation by implementing a concept that achieves moderator exclusion (no in-leakage of moderator into the used fuel cavity). By relying upon a component inside of the transportation cask that provides a watertight function, a strong argument can be made that moderator intrusion is not credible and should not be a required assumption for criticality evaluations during normal or hypothetical accident conditions of transportation. This Transportation Task report addresses the assigned FY 2012 work that supports the proposed moderator exclusion concept as well as a standardized transportation system. The two tasks assigned were to (1) promote the proposed moderator exclusion concept to both regulatory and nuclear industry audiences and (2) advance specific technical issues in order to improve American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section III, Division 3 rules for storage and transportation containments. The common point behind both of the assigned tasks is to provide more options that can be used to resolve current issues being debated regarding the future transportation of used fuel after extended storage.

D. K. Morton

2012-08-01T23:59:59.000Z

179

Stellar populations of bulges at low redshift  

E-Print Network [OSTI]

This chapter summarizes our current understanding of the stellar population properties of bulges and outlines important future research directions.

Sanchez-Blazquez, Patricia

2015-01-01T23:59:59.000Z

180

Minor actinide transmutation in thorium and uranium matrices in heavy water moderated reactors  

SciTech Connect (OSTI)

The irradiation of Th{sup 232} breeds fewer of the problematic minor actinides (Np, Am, Cm) than the irradiation of U{sup 238}. This characteristic makes thorium an attractive potential matrix for the transmutation of these minor actinides, as these species can be transmuted without the creation of new actinides as is the case with a uranium fuel matrix. Minor actinides are the main contributors to long term decay heat and radiotoxicity of spent fuel, so reducing their concentration can greatly increase the capacity of a long term deep geological repository. Mixing minor actinides with thorium, three times more common in the Earth's crust than natural uranium, has the additional advantage of improving the sustainability of the fuel cycle. In this work, lattice cell calculations have been performed to determine the results of transmuting minor actinides from light water reactor spent fuel in a thorium matrix. 15-year-cooled group-extracted transuranic elements (Np, Pu, Am, Cm) from light water reactor (LWR) spent fuel were used as the fissile component in a thorium-based fuel in a heavy water moderated reactor (HWR). The minor actinide (MA) transmutation rates, spent fuel activity, decay heat and radiotoxicity, are compared with those obtained when the MA were mixed instead with natural uranium and taken to the same burnup. Each bundle contained a central pin containing a burnable neutron absorber whose initial concentration was adjusted to have the same reactivity response (in units of the delayed neutron fraction ?) for coolant voiding as standard NU fuel. (authors)

Bhatti, Zaki; Hyland, B.; Edwards, G.W.R. [Atomic Energy of Canada Limited, Chalk River Laboratories, 1 Plant Road, Chalk River, Ontario, K0J 1J0 (Canada)

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Population Biology Graduate Group Bylaws of the Population Biology Graduate Group  

E-Print Network [OSTI]

Population Biology Graduate Group Bylaws of the Population Biology Graduate Group Amended and Approved: February 1, 1994 I. Definition of the Graduate Group in Population Biology The purpose of this graduate group is to bring together faculty and graduate students interested in population biology

Wainwright, Peter C.

182

Population Density Population density (persons per square kilometer) layers, for 1990  

E-Print Network [OSTI]

Population Density Africa Population density (persons per square kilometer) layers, for 1990 the 12 population density classes. Source information: http://sedac.ciesin.columbia.edu/gpw/. ´ Robinson://sedac.ciesin.columbia.edu/place/ Publish Date: 03/13/07 0 1,000 km Population Density 2000 0 Persons \\ Sq.Km 0-2 Persons \\ Sq.Km 2

Columbia University

183

Crystalline Ice Growth on Pt(111) and Pd(111): Nonwetting Growth...  

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

Crystalline Ice Growth on Pt(111) and Pd(111): Nonwetting Growth on a Hydrophobic Water Monolayer. Crystalline Ice Growth on Pt(111) and Pd(111): Nonwetting Growth on a Hydrophobic...

184

The GUINEVERE experiment: First PNS measurements in a lead moderated sub-critical fast core  

SciTech Connect (OSTI)

The GUINEVERE (Generation of Uninterrupted Intense Neutrons at the lead Venus Reactor) experimental program is dedicated to the study of Accelerator Driven System reactivity monitoring. It was partly carried out within the EUROTRANS integrated project (EURATOM FP6). GUINEVERE consists in coupling the fast core of the VENUS-F reactor (SCK-CEN, Mol (Belgium)), composed of enriched uranium and solid lead, with a T(d,n) neutron source provided by the GENEPI-3C deuteron accelerator. This neutron source can be operated in several modes: pulsed mode, continuous mode and also continuous mode with short beam interruptions (the so called 'beam trips'). In the past, the key questions of the reactivity control and monitoring in a subcritical system were studied in the MUSE experiments (1998-2004). These experiments highlighted the difficulty to determine precisely the reactivity with a single technique. This led to investigate a new strategy which is based on the combination of the relative reactivity monitoring via the core power to beam current relationship with absolute reactivity cross-checks during programmed beam interruptions. Consequently, to determine the reactivity, several dynamical techniques of reactivity determination have to be compared. In addition, their accuracy for absolute reactivity determination must be evaluated using a reference reactivity determination technique (from a critical state: rod drop and MSM measurements). The first sub-critical configuration which was studied was around k{sub eff} = 0.96 (SCI). Pulsed Neutron Source experiments (PNS) were carried out. The neutron population decrease was measured using fission chambers in different locations inside the core and the reflector. Neutron population time decrease was analyzed using fitting techniques and the Area Method Results obtained for the SCI reactivity will be shown, discussed and compared to the reference value given by the MSM method. (authors)

Thyebault, H. E. [Laboratoire de Physique Subatomique et de Cosmologie, CNRS-IN2P3/UJF/INPG (France); Baeten, P. [StudieCentrum voor Kernenergie-CEN (Belgium); Billebaud, A.; Chabod, S. [Laboratoire de Physique Subatomique et de Cosmologie, CNRS-IN2P3/UJF/INPG (France); Kochetkov, A. [StudieCentrum voor Kernenergie-CEN (Belgium); Lecolley, F. R.; Lecouey, J. L.; Lehaut, G.; Marie, N. [Laboratoire de Physique Corpusculaire de Caen, ENSICAEN/Universite de Caen/CNRS-IN2P3 (France); Mellier, F. [CEA Commissariat A l'Energie Atomique et Aux Energies Alternatives, DEN, DER/SPEX, F-13108 Saint-Paul-lez-Durance (France); Uyttenhove, W.; Vittiglio, G.; Wagemans, J. [StudieCentrum voor Kernenergie-CEN (Belgium); Ban, G. [Laboratoire de Physique Corpusculaire de Caen, ENSICAEN/Universite de Caen/CNRS-IN2P3 (France); Dessagne, P.; Kerveno, M. [Institut de Physique Hubert Curien-DRS/UdS/CNRS-IN2P3, 53 Avenue des Martyrs, 38026 Grenoble cedex (France); Steckmeyer, J. C. [Laboratoire de Physique Corpusculaire de Caen, ENSICAEN/Universite de Caen/CNRS-IN2P3 (France)

2012-07-01T23:59:59.000Z

185

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

preference, and the social cost of carbon." Environmentalpreference, and the social cost of carbon." Environmentalpreference, and the social cost of carbon." Environmental

Kiparsky, Michael

2010-01-01T23:59:59.000Z

186

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

Drought in California and Patagonia During Medieval Time."Drought in California and Patagonia During Medieval Time."Drought in California and Patagonia During Medieval Time."

Kiparsky, Michael

2010-01-01T23:59:59.000Z

187

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

Data source Donnells (11292600), Relief (11291000), Bearsdley BDRstor BDRdstor + BDRrel + BDRevap Beardley Powerhouse, (

Kiparsky, Michael

2010-01-01T23:59:59.000Z

188

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

R. B. Lammers (2000). "Global water resources: Vulnerabilityin two small watersheds." Water Resources Research 18(3).of a warming climate on water availability in snow-dominated

Kiparsky, Michael

2010-01-01T23:59:59.000Z

189

The evaluation and inheritance of form and growth in natural populations of loblolly pine  

E-Print Network [OSTI]

and . 007. Heritability for individual tree volume could only be calculated for one group of progeny and was extremely low (h = . 0009) . Heritability for volume per hectare was 2 larger (h = . 099) . 2 The coefficients of genetic predictions were... be characterized as genetic- ally inherited, the ability to recognize good genotypes becomes important. This can be done by one of four methods (Falconer 1960): individual selection, family selection, within family selection, or combined selection. These last...

Byram, Thomas Duane

1978-01-01T23:59:59.000Z

190

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

2006). Climate Change Impacts on Water for Agriculture in2006). Climate Change Impacts on Water for Agriculture infuture climate change impacts on water for agriculture and

Kiparsky, Michael

2010-01-01T23:59:59.000Z

191

ORNL model explores location of future U.S. population growth | ornl.gov  

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 JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory |CHEMPACKRadiologicalEric DulmesHow ORISE is MakingORNL|ORNL(865)

192

STA4000 Final Report -Detailed Analysis Investigation on Iceland Population Growth and Climate  

E-Print Network [OSTI]

between moist tropical air and dry continental polar air, produce an area of instability near Iceland are therefore common. The climate of Iceland is also influence by the ice flow in the East Greenland Current. The sea ice reach the north and east coasts of Iceland in winter. But the extent of the ice flow varies

Rosenthal, Jeffrey S.

193

Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change  

E-Print Network [OSTI]

with Uncertainty in Quantitative Risk and Policy Analysis.of Uncertainty." Journal of Risk and Uncertainty 5(4): 297-Carbone (2005). "Feeling at risk matters: Water managers and

Kiparsky, Michael

2010-01-01T23:59:59.000Z

194

Growth machine theory: a qualitative analysis  

E-Print Network [OSTI]

of land inherent in growth machine theory, does not necessarily result in a dialectic, win-lose situation. Furthermore, it is argued that the growth coalition may not always ado t a unidimensional roach to development where further growth...

Smith, Gavin Paul

1993-01-01T23:59:59.000Z

195

Vermont Employment Growth Incentive (Vermont)  

Broader source: Energy.gov [DOE]

The purpose of the Employment Growth Incentive (VEGI) is to encourage job creation in Vermont by a Vermont company, a Vermont division of a company that plans to grow and expand in Vermont, a...

196

Bacterial Growth H. L. Smith  

E-Print Network [OSTI]

Bacterial Growth H. L. Smith 1 Simple Models Bacteria are the dominant form of life on the planet the concentration of the nutrient in the media (grams/liter) and N(t) de

Smith, Hal

197

Biomass production, forage quality, and cation uptake of Quail bush, four-wing saltbush, and seaside barley irrigated with moderately saline-sodic water  

SciTech Connect (OSTI)

The study reported here investigated capacity of Atriplex lentiformis (Torr.) S. Wats. (Quail bush), Atriplex X aptera A. Nels. (pro sp.) (Wytana four-wing saltbush), and Hordeum marinum Huds. (seaside barley) to produce biomass and crude protein and take up cations when irrigated with moderately saline-sodic water, in the presence of a shallow water table. Water tables were established at 0.38, 0.76, and 1.14m below the surface in sand-filled columns. The columns were then planted to the study species. Study plants were irrigated for 224 days; irrigation water was supplied every 7 days equal to water lost to evapotranspiration (ET) plus 100mL (the volume of water removed in the most previous soil solution sampling). Water representing one of two irrigation sources was used: Powder River (PR) or coalbed natural gas (CBNG) wastewater. Biomass production did not differ significantly between water quality treatments but did differ significantly among species and water table depth within species. Averaged across water quality treatments, Hordeum marinum produced 79% more biomass than A. lentiformis and 122% more biomass than Atriplex X aptera, but contained only 11% crude protein compared to 16% crude protein in A. lentiformis and 14% crude protein in Atriplex X aptera. Atriplex spp. grown in columns with the water table at 0.38m depth produced more biomass, took up less calcium on a percentage basis, and took up more sodium on a percentage basis than when grown with the water table at a deeper depth. Uptake of cations by Atriplex lentiformis was approximately twice the uptake of cations by Atriplex X aptera and three times that of H. marinum. After 224 days of irrigation, crop growth, and cation uptake, followed by biomass harvest, EC and SAR of shallow groundwater in columns planted to A. lentiformis were less than EC and SAR of shallow ground water in columns planted to either of the other species.

Bauder, J.W.; Browning, L.S.; Phelps, S.D.; Kirkpatrick, A.D. [Montana State University, Bozeman, MT (United States)

2008-07-01T23:59:59.000Z

198

Personality as a Moderating Variable Between Loss of Relationship and Subjective Well-Being in College Students  

E-Print Network [OSTI]

, Michael Duffy Committee Members, Daniel Brossart Arnold LeUnes Anita McCormick Head of Department, Victor Willson August 2010 Major Subject: Counseling Psychology iii ABSTRACT Personality as a Moderating Variable Between Loss... appreciation to my doctoral committee: Michael Duffy, Daniel Brossart, Anita McCormick, and Arnold LeUnes. Your continued support has meant a lot to me as I went through this process. I appreciate all the time and effort that was contributed...

Smith, Amanda Artell

2010-10-12T23:59:59.000Z

199

Cosmic Growth History and Expansion History  

E-Print Network [OSTI]

of the expansion history dark energy equation of state,and growth history constraints on the dark energy equationand growth history constraints on the dark energy equation

Linder, Eric V.

2009-01-01T23:59:59.000Z

200

Estimating future global per capita water availability based on changes in climate and population  

SciTech Connect (OSTI)

Human populations are profoundly affected by water stress, or the lack of sufficient per capita available freshwater. Water stress can result from overuse of available freshwater resources or from a reduction in the amount of available water due to decreases in rainfall and stored water supplies. Analyzing the interrelationship between human populations and water availability is complicated by the uncertainties associated with climate change projections and population projections. We present a simple methodology developed to integrate disparate climate and population data sources and develop first-order per capita water availability projections at the global scale. Simulations from the coupled land-ocean-atmosphere Community Climate System Model version 3 (CCSM3) forced with a range of hypothetical greenhouse gas emissions scenarios are used to project grid-based changes in precipitation minus evapotranspiration as proxies for changes in runoff, or fresh water supply. Population growth changes according to several Intergovernmental Panel on Climate Change (IPCC) storylines are used as proxies for changes in fresh water demand by 2025, 2050 and 2100. These freshwater supply and demand projections are then combined to yield estimates of per capita water availability aggregated by watershed and political unit. Results suggest that important insights might be extracted from the use of the process developed here, notably including the identification of the globe s most vulnerable regions in need of more detailed analysis and the relative importance of population growth versus climate change in in altering future freshwater supplies. However, these are only exemplary insights and, as such, could be considered hypotheses that should be rigorously tested with multiple climate models, multiple observational climate datasets, and more comprehensive population change storylines.

Parish, Esther S [ORNL; Kodra, Evan [Northeastern University; Ganguly, Auroop R [Northeastern University; Steinhaeuser, Karsten [University of Minnesota

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Supernova rates and stellar populations  

E-Print Network [OSTI]

We discuss the results about the nature of type Ia Supernovae that can be derived by studying their rates in different stellar populations. While the evolution of SN photometry and spectra can constrain the explosion mechanism, the SN rate depends on the progenitor system. We review the current available data on rates as a function of parent galaxy color, morphology, star formation rate, radio luminosity and environment. By studying the variation of the rates with the color of the parent galaxy, a strong evidence was established that type Ia SNe come from both young and old stars. The dependence of the rates with the radio power of the parent galaxy is best reproduced by a bimodal distribution of delay time between the formation of the progenitor and its explosion as a SN. Cluster early-type galaxies show higher type Ia SN rate with respect to field galaxies, and this effect can be due either to traces of young stars or to differences in the delay time distribution.

F. Mannucci

2007-08-03T23:59:59.000Z

202

X-ray populations in galaxies  

E-Print Network [OSTI]

Today's sensistive, high resolution Chandra X-ray observations allow the study of many populations of X-ray sources. The traditional astronomical tools of photometric diagrams and luminosity functions are now applied to these populations, and provide the means for classifying the X-ray sources and probing their evolution. While overall stellar mass drives the amount of X-ray binaries in old stellar population, the amount of sources in star-forming galaxies is related to the star formation rate. Shart-lived, luminous, high mass binaries (HNXBs) dominate these young populations.

G. Fabbiano

2005-11-09T23:59:59.000Z

203

Stellar populations in bulges of spiral galaxies  

E-Print Network [OSTI]

We discuss the integrated properties of the stellar population in bulges along the Hubble sequence and new HST data for individual stars in the bulge of M31.

P. Jablonka

1997-03-03T23:59:59.000Z

204

Empirical Prediction Intervals for County Population Forecasts  

E-Print Network [OSTI]

in the determination and prediction of population forecastperformance of empirical prediction intervals? Table 5 shows26, 163184. Empirical Prediction Intervals for County

Rayer, Stefan; Smith, Stanley K.; Tayman, Jeff

2009-01-01T23:59:59.000Z

205

Economic Growth and Development Economics 777  

E-Print Network [OSTI]

Economic Growth and Development Economics 777 July 18, 2008 Fall Semester 2008 Professor J. H. Mc of economic growth and development. We will analyze several different growth models and look at some recent empirical research. Text The text for this course is: Economic Growth (2nd Edition) by Robert J. Barro

Almor, Amit

206

An individual-based instream flow model for coexisting populations of brown and rainbow trout  

SciTech Connect (OSTI)

This report describes an individual-based model for sympatric populations of brown and rainbow trout in a stream habitat. Hatchery rainbow trout are included as a third species. The model provides a tool for predicting flow effects on trout populations by linking the hydraulic component of the Physical Habitat Simulation (PHABSIM) methodology and an individual-based population modeling approach. PHABSIM simulates the spatial distribution of depth and velocity at different flows. The individual-based model simulates the reproduction, foraging, consumption, energetic costs, growth, habitat utilization, movement, and mortality of individual fish, and enables population attributes to be determined from relevant attributes of individual fish. The spatially explicit nature of the model permits evaluation of behavioral responses used by fish to mitigate temporary setbacks in habitat quality. This linked mechanistic modeling approach readily lends itself to the iterative process of making predictions, testing against field data, improving the model, and making more predictions. The model has been applied to a stream segment in the Tule River, California. Physical and biological data from this site are used as input to the model. Calibrating the model to abundance data was relatively easy because values for mortality parameters were not strongly constrained by empirical data. Calibrating the model to observed growth rates and habitat use was more challenging. The primary reason for developing this model has been to provide a new and complementary tool to PHABSIM that can be used in instream-flow assessments.

Van Winkle, W.; Jager, H.I.; Holcomb, B.D.

1996-03-01T23:59:59.000Z

207

Genetic Diversity and Population Structure of the Arabian Horse Populations from Syria and other Countries  

E-Print Network [OSTI]

different populations of Arabians representing Middle Eastern and Western populations. The main two aims of this study were to provide the genetic diversity description of Arabians from different origins and to examine the traditional classification system...

Khanshour, Anas M

2013-07-05T23:59:59.000Z

208

Fish Population and Behavior Revealed by Instantaneous  

E-Print Network [OSTI]

Fish Population and Behavior Revealed by Instantaneous Continental Shelf­Scale Imaging Nicholas C-transect methods from slow-moving research vessels. These methods significantly undersample fish populations in time and space, leaving an incomplete and ambiguous record of abundance and behavior. We show that fish

209

Calculating Evolutionary Dynamics in Structured Populations  

E-Print Network [OSTI]

Calculating Evolutionary Dynamics in Structured Populations Charles G. Nathanson1. , Corina E. Here we provide a general formula for calculating evolutionary dynamics in a wide class of structured) Calculating Evolutionary Dynamics in Structured Populations. PLoS Comput Biol 5(12): e1000615. doi:10

Nowak, Martin A.

210

Cancer Epidemiology Population Health Sciences 750  

E-Print Network [OSTI]

-01/5/11-1 Cancer Epidemiology Population Health Sciences 750 3 credits When: Spring 2011 (1 Audience: This course is intended for students in health-related disciplines interested in cancer etiology. the unequal burden of cancer among populations and variations across time and geography, 2. the distinctive

Sheridan, Jennifer

211

Reversing Wolbachia-based population replacement  

E-Print Network [OSTI]

Wolbachia bacteria as a vehicle for population replace- ment. Also discussed are strategies strategies and provide mechan- isms for the autonomous spread of desired transgenes into the targeted relative to the natural population [15­17]. Primary candidates for gene-drive strategies are autonomous

Dobson, Stephen L.

212

Nonlinear structural crack growth monitoring  

DOE Patents [OSTI]

A method and apparatus are provided for the detection, through nonlinear manipulation of data, of an indicator of imminent failure due to crack growth in structural elements. The method is a process of determining energy consumption due to crack growth and correlating the energy consumption with physical phenomena indicative of a failure event. The apparatus includes sensors for sensing physical data factors, processors or the like for computing a relationship between the physical data factors and phenomena indicative of the failure event, and apparatus for providing notification of the characteristics and extent of such phenomena.

Welch, Donald E. (Oak Ridge, TN); Hively, Lee M. (Philadelphia, TN); Holdaway, Ray F. (Clinton, TN)

2002-01-01T23:59:59.000Z

213

Digital electronic bone growth stimulator  

DOE Patents [OSTI]

A device is described for stimulating bone tissue by applying a low level alternating current signal directly to the patient`s skin. A crystal oscillator, a binary divider chain and digital logic gates are used to generate the desired waveforms that reproduce the natural electrical characteristics found in bone tissue needed for stimulating bone growth and treating osteoporosis. The device, powered by a battery, contains a switch allowing selection of the correct waveform for bone growth stimulation or osteoporosis treatment so that, when attached to the skin of the patient using standard skin contact electrodes, the correct signal is communicated to the underlying bone structures. 5 figs.

Kronberg, J.W.

1995-05-09T23:59:59.000Z

214

Digital electronic bone growth stimulator  

DOE Patents [OSTI]

A device for stimulating bone tissue by applying a low level alternating current signal directly to the patient's skin. A crystal oscillator, a binary divider chain and digital logic gates are used to generate the desired waveforms that reproduce the natural electrical characteristics found in bone tissue needed for stimulating bone growth and treating osteoporosis. The device, powered by a battery, contains a switch allowing selection of the correct waveform for bone growth stimulation or osteoporosis treatment so that, when attached to the skin of the patient using standard skin contact electrodes, the correct signal is communicated to the underlying bone structures.

Kronberg, James W. (Aiken, SC)

1995-01-01T23:59:59.000Z

215

Growth of asteroids, planetary embryos and Kuiper belt objects by chondrule accretion  

E-Print Network [OSTI]

Chondrules are millimeter-sized spherules that dominate primitive meteorites (chondrites) originating from the asteroid belt. The incorporation of chondrules into asteroidal bodies must be an important step in planet formation, but the mechanism is not understood. We show that the main growth of asteroids can result from gas-drag-assisted accretion of chondrules. The largest planetesimals of a population with a characteristic radius of 100 km undergo run-away accretion of chondrules within ~3 Myr, forming planetary embryos up to Mars sizes along with smaller asteroids whose size distribution matches that of main belt asteroids. The aerodynamical accretion leads to size-sorting of chondrules consistent with chondrites. Accretion of mm-sized chondrules and ice particles drives the growth of planetesimals beyond the ice line as well, but the growth time increases above the disk life time outside of 25 AU. The contribution of direct planetesimal accretion to the growth of both asteroids and Kuiper belt objects is...

Johansen, Anders; Lacerda, Pedro; Bizzarro, Martin

2015-01-01T23:59:59.000Z

216

Transmutation, Burn-Up and Fuel Fabrication Trade-Offs in Reduced-Moderation Water Reactor Thorium Fuel Cycles - 13502  

SciTech Connect (OSTI)

Multiple recycle of long-lived actinides has the potential to greatly reduce the required storage time for spent nuclear fuel or high level nuclear waste. This is generally thought to require fast reactors as most transuranic (TRU) isotopes have low fission probabilities in thermal reactors. Reduced-moderation LWRs are a potential alternative to fast reactors with reduced time to deployment as they are based on commercially mature LWR technology. Thorium (Th) fuel is neutronically advantageous for TRU multiple recycle in LWRs due to a large improvement in the void coefficient. If Th fuel is used in reduced-moderation LWRs, it appears neutronically feasible to achieve full actinide recycle while burning an external supply of TRU, with related potential improvements in waste management and fuel utilization. In this paper, the fuel cycle of TRU-bearing Th fuel is analysed for reduced-moderation PWRs and BWRs (RMPWRs and RBWRs). RMPWRs have the advantage of relatively rapid implementation and intrinsically low conversion ratios. However, it is challenging to simultaneously satisfy operational and fuel cycle constraints. An RBWR may potentially take longer to implement than an RMPWR due to more extensive changes from current BWR technology. However, the harder neutron spectrum can lead to favourable fuel cycle performance. A two-stage fuel cycle, where the first pass is Th-Pu MOX, is a technically reasonable implementation of either concept. The first stage of the fuel cycle can therefore be implemented at relatively low cost as a Pu disposal option, with a further policy option of full recycle in the medium term. (authors)

Lindley, Benjamin A.; Parks, Geoffrey T. [University of Cambridge, Cambridge (United Kingdom)] [University of Cambridge, Cambridge (United Kingdom); Franceschini, Fausto [Westinghouse Electric Company LLC, Cranberry Township, PA (United States)] [Westinghouse Electric Company LLC, Cranberry Township, PA (United States)

2013-07-01T23:59:59.000Z

217

Population genomics20-02-2009 Antnio Rodrigues; Bruno Santos / 59 Population Genomics  

E-Print Network [OSTI]

Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Population Genomics 1 António Rodrigues (PDBC 2008) Bruno Santos (PDBC 2008) #12;Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Contents 2 2 1000 genome project 1 Motivation and Introduction New generation sequencing

Goldschmidt, Christina

218

POPULATION ECOLOGY Population Dynamics of the Colorado Potato Beetle in an  

E-Print Network [OSTI]

POPULATION ECOLOGY Population Dynamics of the Colorado Potato Beetle in an Agroecosystem with Tomatoes and Potatoes with Management Implications to Processing Tomatoes CHRIS L. HARDING,1 S. J Environ. Entomol. 31(6): 1110Ð1118 (2002) ABSTRACT We evaluated the population dynamics of Colorado potato

219

Retrieval of Cloud Phase and Crystal Habit from Multiangle Imaging Spectroradiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) Data  

SciTech Connect (OSTI)

A method of retrieving cloud phase and the dominant ice crystal habit from radiances measured by the Multi-angle Imaging Spectro-Radiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS) has been developed. The retrieval method takes advantage of the differences in the phase function of various particle shapes as a function of scattering angle. Three case studies are presented which illustrate the retrieval method. A comparison with semi-coincident in situ observations for one case study indicates that the retrieved crystal habits are consistent with the observations.

McFarlane, Sally A.; Marchand, Roger T.; Ackerman, Thomas P.

2005-07-22T23:59:59.000Z

220

Encrusting growth and retreat of Montastrea annularis (Anthozoa; Scleractinia) following the grounding of a freighter on Molasses Reef, Key Largo, Florida  

E-Print Network [OSTI]

). Because of its accessibility, it is one of the most visited reefs in the upper Florida Keys (Voss, 1984). Voss (1984) characterized the usage of Molasses Reef by divers as "heavya and use for fishing as "moderate". Structurally, ix, has s, well-developed... management, quantitative evaluation on destructive processes of coral is very necessary as well as that of constructive processes. It is suggested that the influence of previously discussed environmental factors on coral tissue retreat as well as growth...

Choi, Kwang-Sik

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Energy Systems and Population Health  

SciTech Connect (OSTI)

It is well-documented that energy and energy systems have a central role in social and economic development and human welfare at all scales, from household and community to regional and national (41). Among its various welfare effects, energy is closely linked with people s health. Some of the effects of energy on health and welfare are direct. With abundant energy, more food or more frequent meals can be prepared; food can be refrigerated, increasing the types of food items that are consumed and reducing food contamination; water pumps can provide more water and eliminate the need for water storage leading to contamination or increased exposure to disease vectors such as mosquitoes or snails; water can be disinfected by boiling or using other technologies such as radiation. Other effects of energy on public health are mediated through more proximal determinants of health and disease. Abundant energy can lead to increased irrigation, agricultural productivity, and access to food and nutrition; access to energy can also increase small-scale income generation such as processing of agricultural commodities (e.g., producing refined oil from oil seeds, roasting coffee, drying and preserving fruits and meats) and production of crafts; ability to control lighting and heating allows education or economic activities to be shielded from daily or seasonal environmental constraints such as light, temperature, rainfall, or wind; time and other economic resources spent on collecting and/or transporting fuels can be used for other household needs if access to energy is facilitated; energy availability for transportation increases access to health and education facilities and allow increased economic activity by facilitating the transportation of goods and services to and from markets; energy for telecommunication technology (radio, television, telephone, or internet) provides increased access to information useful for health, education, or economic purposes; provision of energy to rural and urban health facilities allows increased delivery and coverage of 3 various health services and interventions such as tests and treatments, better storage of medicine and vaccines, disinfection of medical equipment by boiling or radiation, and more frequent and efficient health system encounters through mobile clinics or longer working hours; and so on. In fact, while the dominant view of development-energy-health linkages has been that improvements in energy and health are outcomes of the socioeconomic development process (e.g., the ''energy ladder'' framework discussed below), it has even been argued that access to higher quality energy sources and technologies can initiate a chain of demographic, health, and development outcomes by changing the household structure and socioeconomic relationships. For example, in addition to increased opportunities for food and income production, reduced infant mortality as a result of transition to cleaner fuels or increased coverage of vaccination with availability of refrigerators in rural clinics may initiate a process of ''demographic transition'' to low-mortality and low-fertility populations (14). Such a transition has historically been followed with further improvements in maternal and child health and increased female participation in the labor markets and other economic activities.

Ezzati, Majid; Bailis, Rob; Kammen, Daniel M.; Holloway, Tracey; Price, Lynn; Cifuentes, Luis A.; Barnes, Brendon; Chaurey, Akanksha; Dhanapala, Kiran N.

2004-04-12T23:59:59.000Z

222

Estimating Traveler Populations at Airport and Cruise Terminals for Population Distribution and Dynamics  

SciTech Connect (OSTI)

In recent years, uses of high-resolution population distribution databases are increasing steadily for environmental, socioeconomic, public health, and disaster-related research and operations. With the development of daytime population distribution, temporal resolution of such databases has been improved. However, the lack of incorporation of transitional population, namely business and leisure travelers, leaves a significant population unaccounted for within the critical infrastructure networks, such as at transportation hubs. This paper presents two general methodologies for estimating passenger populations in airport and cruise port terminals at a high temporal resolution which can be incorporated into existing population distribution models. The methodologies are geographically scalable and are based on, and demonstrate how, two different transportation hubs with disparate temporal population dynamics can be modeled utilizing publicly available databases including novel data sources of flight activity from the Internet which are updated in near-real time. The airport population estimation model shows great potential for rapid implementation for a large collection of airports on a national scale, and the results suggest reasonable accuracy in the estimated passenger traffic. By incorporating population dynamics at high temporal resolutions into population distribution models, we hope to improve the estimates of populations exposed to or at risk to disasters, thereby improving emergency planning and response, and leading to more informed policy decisions.

Jochem, Warren C [ORNL; Sims, Kelly M [ORNL; Bright, Eddie A [ORNL; Urban, Marie L [ORNL; Rose, Amy N [ORNL; Coleman, Phil R [ORNL; Bhaduri, Budhendra L [ORNL

2013-01-01T23:59:59.000Z

223

The Cutaneous Epidermal Growth Factor Network: Can it be Translated Clinically to Stimulate Hair Growth?  

E-Print Network [OSTI]

of epidermal growth factor on hair growth in the mouse. Jstem cell character in hair follicles. Science. 2006;312:Notch signalling pathway in hair growth. Mech Dev. 1998;78:

Alexandrescu, Doru T; Kauffman, C Lisa; Dasanu, Constantin A

2009-01-01T23:59:59.000Z

224

Hanford Site Regional Population - 2010 Census  

SciTech Connect (OSTI)

The U.S. Department of Energy conducts radiological operations in south-central Washington State. Population dose estimates must be performed to provide a measure of the impact from site radiological releases. Results of the U.S. 2010 Census were used to determine counts and distributions for the residential population located within 50-miles of several operating areas of the Hanford Site. Year 2010 was the first census year that a 50-mile population of a Hanford Site operational area exceeded the half-million mark.

Hamilton, Erin L.; Snyder, Sandra F.

2011-08-12T23:59:59.000Z

225

Population viability analysis of the Endangered shortnose sturgeon  

SciTech Connect (OSTI)

This study used population viability analysis (PVA) to partition the influences of potential threats to the endangered shortnose sturgeon (Acipenser brevirostrum). A workshop brought together experts to help identify potential threats including groundwater withdrawal, poor water quality, saltwater intrusion, mercury effects, harvest as by-catch, and sedimentation of spawning habitat. During the course of the project, we eliminated some threats and added new ones. Groundwater withdrawal was dismissed after a study failed to identify connection with groundwater and the majority of pumping is from a confined aquifer. We also eliminated activities on Fort Stewart as influences on spawning habitat because any successful spawning must occur upstream of Fort Stewart. We added climate change to the list of threats based on our assessment of temperature effects and expectations of sea-level rise. Our study highlighted the role of populations in nearby rivers in providing metapopulation support, raising the concern that the population in the Ogeechee River acts as a demographic sink. As part of this study, we carried out a field sampling study to analyze effects of training activities on headwater streams. We developed a new methodology for sampling design as part of this effort and used a mixed-modeling approach to identify relationships between land cover-land use, including those associated with military training activity and water quality. We found that tank training was associated with higher suspended sediment and equipment training was associated with higher organic carbon) and water quality. We detected effects of training on suspended sediment and organic carbon. We also carried out a field sampling effort in the Canoochee and Ogeechee Rivers. In the Ogeechee River, we found that dissolved oxygen in 40% of measurements during summer were below 4 mg L-1. To evaluate mercury as a potential threat, we developed a mercury uptake model and analyzed mercury levels in amphipod prey and sturgeon eggs. These did not exceed EPA guidelines. Finally, we developed a PVA model that including linkages between shortnose sturgeon growth, reproduction, and survival and each remaining threat; All three had significant influences. Preliminary simulations suggest that elevated temperatures under future climate will extirpate this population and add support to the hypothesis that this species requires access to spawning habitat far upstream to persist.

Jager, Yetta [ORNL; Bevelhimer, Mark S [ORNL; Peterson, Douglas L. [University of Georgia, Athens, GA

2011-07-01T23:59:59.000Z

226

Independent optical excitation of distinct neural populations  

E-Print Network [OSTI]

Optogenetic tools enable examination of how specific cell types contribute to brain circuit functions. A long-standing question is whether it is possible to independently activate two distinct neural populations in mammalian ...

Klapoetke, Nathan Cao

227

Method for spatially distributing a population  

DOE Patents [OSTI]

A process for spatially distributing a population count within a geographically defined area can include the steps of logically correlating land usages apparent from a geographically defined area to geospatial features in the geographically defined area and allocating portions of the population count to regions of the geographically defined area having the land usages, according to the logical correlation. The process can also include weighing the logical correlation for determining the allocation of portions of the population count and storing the allocated portions within a searchable data store. The logically correlating step can include the step of logically correlating time-based land usages to geospatial features of the geographically defined area. The process can also include obtaining a population count for the geographically defined area, organizing the geographically defined area into a plurality of sectors, and verifying the allocated portions according to direct observation.

Bright, Edward A [Knoxville, TN; Bhaduri, Budhendra L [Knoxville, TN; Coleman, Phillip R [Knoxville, TN; Dobson, Jerome E [Lawrence, KS

2007-07-24T23:59:59.000Z

228

Stellar Populations in Bulges of Spiral Galaxies  

E-Print Network [OSTI]

We have conducted a spectroscopic analysis of the bulges of a sample of 31 spiral galaxies, spanning the Hubble sequence from S0 to Scd type, in order to study the radial distribution of their stellar population properties.

P. Jablonka; J. Gorgas; P. Goudfrooij

2002-02-01T23:59:59.000Z

229

Statistical inference in population genetics using microsatellites  

E-Print Network [OSTI]

Statistical inference from molecular population genetic data is currently a very active area of research for two main reasons. First, in the past two decades an enormous amount of molecular genetic data have been produced ...

Csillry, Katalin

2009-01-01T23:59:59.000Z

230

Population dynamic interference among childhood diseases  

E-Print Network [OSTI]

is predicted and cannot be dismissed in the limited case-study data available for measles and whooping cough in England before the vaccination era. Keywords: measles; whooping cough; population dynamics; epidemiology

Rohani, Pejman

231

Population Characteristics and Seasonal Movement Patterns of the Rattlesnake Hills Elk Herd - Status Report 2000  

SciTech Connect (OSTI)

Population characteristics of the Rattlesnake Hills elk herd indicate reduced herd growth rates from the 1980s compared to the 1990s (McCorquodale 1988; Eberhardt 1996). However, the population continued to grow approximately 25% annually through the 1990s, reaching a high of 838 animals in summer 1999. Calf recruitment rates appear to be cyclic and are likely related to reduced calf survival during the first weeks of life; however, late-term abortions may also have occurred. The cause(s) could be predator-related and/or a function of shifts in nutritional condition (age-class distributions, assuming older-age cows are less likely to recruit calves, major climate shifts) or changes in the human-related disturbances during gestation, and/or calf rearing periods. In fall 1999 and spring 2000, the population was reduced from 838 individuals to 660 individuals. The primary controlling factors were modified hunting seasons on private and state lands and the large-scale roundup conducted in spring 2000. Continued removal of animals (particularly females) within the population will be pivotal to maintain the population at a level that minimizes land damage complaints, animal-vehicle collisions, use of central Hanford areas, and deterioration of natural resources.

Tiller, B.L.; Zufelt, R.K.; Turner, S.; Cadwell, L.L.; Bender, L.; Turner, G.K.

2000-10-10T23:59:59.000Z

232

X-ray source populations in galaxies  

E-Print Network [OSTI]

Today's sensitive, high-resolution X-ray observations allow the study of populations of X-ray sources, in the luminosity range of Galactic X-ray binaries, in galaxies as distant as 20-30 Mpc. The traditional astronomical tools of photometric diagrams and luminosity functions are now applied to these populations, providing a direct probe of the evolved binary component of different stellar populations. The study of the X-ray populations of E and S0 galaxies has revamped the debate on the formation and evolution of low-mass X-ray binaries (LMXBs) and on the role of globular clusters in these processes. While overall stellar mass drives the amount of X-ray binaries in old stellar populations, the amount of sources in star forming galaxies is related to the star formation rate. Short-lived, luminous, high-mass binaries (HMXBs) dominate these young populations. The most luminous sources in these systems are the debated ULXs, which have been suggested to be ~100-1000 Msol black holes, but could alternatively include a number of binaries with stellar mass black holes. Very soft sources have also been discovered in many galaxies and their nature is currently being debated. Observations of the deep X-ray sky, and comparison with deep optical surveys, are providing the first evidence of the X-ray evolution of galaxies.

G. Fabbiano

2005-11-16T23:59:59.000Z

233

Method for crystal growth control  

DOE Patents [OSTI]

The growth of a crystalline body of a selected material is controlled so that the body has a selected cross-sectional shape. The apparatus is of the type which includes the structure normally employed in known capillary die devices as well as means for observing at least the portion of the surfaces of the growing crystalline body and the meniscus (of melt material from which the body is being pulled) including the solid/liquid/vapor junction in a direction substantially perpendicular to the meniscus surface formed at the junction when the growth of the crystalline body is under steady state conditions. The cross-sectional size of the growing crystalline body can be controlled by determining which points exhibit a sharp change in the amount of reflected radiation of a preselected wavelength and controlling the speed at which the body is being pulled or the temperature of the growth pool of melt so as to maintain those points exhibiting a sharp change at a preselected spatial position relative to a predetermined reference position. The improvement comprises reference object means positioned near the solid/liquid/vapor junction and capable of being observed by the means for observing so as to define said reference position so that the problems associated with convection current jitter are overcome.

Yates, Douglas A. (Burlington, MA); Hatch, Arthur E. (Waltham, MA); Goldsmith, Jeff M. (Medford, MA)

1981-01-01T23:59:59.000Z

234

Reduced models of algae growth Heikki Haario,  

E-Print Network [OSTI]

Reduced models of algae growth Heikki Haario, Leonid Kalachev Marko Laine, Lappeenranta University of the phenomena studied. Here, in the case of algae growth modelling, we show how a systematic model reduction may: Algae growth modelling, asymptotic methods, model reduction, MCMC, Adaptive Markov chain Monte Carlo. 1

Bardsley, John

235

Original article Growth stresses in tension wood  

E-Print Network [OSTI]

Original article Growth stresses in tension wood: role of microfibrils and lignification T Okuyama the growth stress generation in the region of normal and tension woods. growth stress/ tension wood in normal and ten- sion wood. The compressive stress from the deposition of lignin controls the level

Paris-Sud XI, Université de

236

Sustainable manufacturing has emerged as the leading paradigm to address the dilemma of maintaining a progressive economic growth  

E-Print Network [OSTI]

role especially for controlling greenhouse gas emissions and the efficient use of energy. As announced development policies due to the pressure created by rapid population growth and industrialization on natural. This vision will let the energy efficiency become widespread and increase the use of clean and renewable

Berlin,Technische Universität

237

Moderate extracellular acidification inhibits capsaicin-induced cell death through regulating calcium mobilization, NF-{kappa}B translocation and ROS production in synoviocytes  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Moderate extracellular acidification regulates intracellular Ca{sup 2+} mobilization. Black-Right-Pointing-Pointer Moderate acidification activates NF-{kappa}B nuclear translocation in synoviocytes. Black-Right-Pointing-Pointer Moderate acidification depresses the ROS production induced by capsaicin. Black-Right-Pointing-Pointer Moderate acidification inhibits capsaicin-caused synoviocyte death. -- Abstract: We previously show the expression of transient receptor potential vanilloid 1 (TRPV1) in primary synoviocytes from collagen-induced arthritis (CIA) rats. Capsaicin and lowered extracellular pH from 7.4 to 5.5 induce cell death through TRPV1-mediated Ca{sup 2+} entry and reactive oxygen species (ROS) production. However, under the pathological condition in rheumatoid arthritis, the synovial fluid is acidified to a moderate level (about pH 6.8). In the present study, we examined the effects of pH 6.8 on the TRPV1-mediated cell death. Our finding is different or even opposite from what was observed at pH 5.5. We found that the moderate extracellular acidification (from pH 7.4 to 6.8) inhibited the capsaicin-induced Ca{sup 2+} entry through attenuating the activity of TRPV1. In the mean time, it triggered a phospholipse C (PLC)-related Ca{sup 2+} release from intracellular stores. The nuclear translocation of NF-{kappa}B was found at pH 6.8, and this also depends on PLC activation. Moreover, the capsaicin-evoked massive ROS production and cell death were depressed at pH 6.8, both of which are dependent on the activation of PLC and NF-{kappa}B. Taken together, these results suggested that the moderate extracellular acidification inhibited the capsaicin-induced synoviocyte death through regulating Ca{sup 2+} mobilization, activating NF-{kappa}B nuclear translocation and depressing ROS production.

Hu, Fen; Yang, Shuang; Zhao, Dan; Zhu, Shuyan; Wang, Yuxiang [Department of Biophysics, School of Physics and Key Laboratory of Bioactive Materials of Education Ministry, Nankai University, Tianjin 300071 (China)] [Department of Biophysics, School of Physics and Key Laboratory of Bioactive Materials of Education Ministry, Nankai University, Tianjin 300071 (China); Li, Junying, E-mail: jyli04@nankai.edu.cn [Department of Biophysics, School of Physics and Key Laboratory of Bioactive Materials of Education Ministry, Nankai University, Tianjin 300071 (China)] [Department of Biophysics, School of Physics and Key Laboratory of Bioactive Materials of Education Ministry, Nankai University, Tianjin 300071 (China)

2012-07-20T23:59:59.000Z

238

Individual-based model of yellow perch and walleye populations in Oneida Lake  

SciTech Connect (OSTI)

Predator-prey dynamics and density dependence are fundamental issues in ecology. The authors use a detailed, individual-based model of walleye and yellow perch to investigate the effects of alternative prey and compensatory responses on predator and prey population dynamics. The analyses focus on the numerical and developmental responses of the predator, rather than the traditional emphasis on functional responses. The extensive database for Oneida Lake, New York, USA was used to configure the model and ensure its realism. The model follows the daily growth, mortality, and spawning of individuals of each species through their lifetime. Three ecologically distinct periods in the history of Oneida Lake were simulated: baseline, high mayfly densities, and high forage fish densities. Mayflies and forage fish act as alternative prey for walleye. For model corroboration, the three periods were simulated sequentially as they occurred in Oneida Lake. Model predictions of abundances, size at age, and growth and survival rates compared favorably with Oneida Lake data. Three hypotheses suggested by the data were evaluated: alternative prey stabilizes yellow perch and walleye populations; alternative prey increases yellow perch and walleye recruitment; and density-dependent growth and survival compensate for changes in young-of-the-year mortality. Model simulations were performed under increased mayfly densities, increased forage fish densities, and increased egg mortality rates.

Rose, K.A. [Oak Ridge National Lab., TN (United States). Environmental Sciences Div.; Rutherford, E.S. [Univ. of Michigan, Ann Arbor, MI (United States). Inst. for Fisheries Research; McDermot, D.S. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Ecology and Evolutionary Biology; Forney, J.L.; Mills, E.L. [Cornell Univ. Biological Station, Bridgeport, NY (United States)

1999-05-01T23:59:59.000Z

239

Radiogenic lead with dominant content of {sup 208}Pb: New coolant and neutron moderator for innovative nuclear reactors  

SciTech Connect (OSTI)

The advantages of radiogenic lead with dominant content of {sup 208}Pb as a reactor coolant with respect to natural lead are caused by unique nuclear properties of {sup 208}Pb which is a double-magic nucleus with closed proton and neutron shells. This results in significantly lower micro cross section and resonance integral of radiative neutron capture by {sup 208}Pb than those for numerous light neutron moderators. The extremely weak ability of {sup 208}Pb to absorb neutrons results in the following effects. Firstly, neutron moderating factor (ratio of scattering to capture cross sections) is larger than that for graphite and light water. Secondly, age and diffusion length of thermal neutrons are larger than those for graphite, light and heavy water. Thirdly, neutron lifetime in {sup 208}Pb is comparable with that for graphite, beryllium and heavy water what could be important for safe reactor operation. The paper presents some results obtained in neutronics and thermal-hydraulics evaluations of the benefits from the use of radiogenic lead with dominant content of {sup 208}Pb instead of natural lead as a coolant of fast breeder reactors. The paper demonstrates that substitution of radiogenic lead for natural lead can offer the following benefits for operation of fast breeder reactors. Firstly, improvement of the reactor safety thanks to the better values of coolant temperature reactivity coefficient and, secondly, improvement of some thermal-hydraulic reactor parameters. Radiogenic lead can be extracted from thorium sludge without isotope separation as {sup 208}Pb is a final isotope in the decay chain of {sup 232}Th. (authors)

Shmelev, A. N.; Kulikov, G. G.; Kryuchkov, E. F.; Apse, V. A.; Kulikov, E. G. [National Research Nuclear Univ. MEPhI, Kashirskoe shosse, 31, 115409, Moscow (Russian Federation)

2012-07-01T23:59:59.000Z

240

MOLYBDENUM, RUTHENIUM, AND THE HEAVY r-PROCESS ELEMENTS IN MODERATELY METAL-POOR MAIN-SEQUENCE TURNOFF STARS  

SciTech Connect (OSTI)

The ratios of elemental abundances observed in metal-poor stars of the Galactic halo provide a unique present-day record of the nucleosynthesis products of its earliest stars. While the heaviest elements were synthesized by the r- and s-processes, dominant production mechanisms of light trans-ironic elements were obscure until recently. This work investigates further our 2011 conclusion that the low-entropy regime of a high-entropy wind (HEW) produced molybdenum and ruthenium in two moderately metal-poor turnoff stars that showed extreme overabundances of those elements with respect to iron. Only a few, rare nucleosynthesis events may have been involved. Here we determine abundances for Mo, Ru, and other trans-Fe elements for 28 similar stars by matching spectral calculations to well-exposed near-UV Keck HIRES spectra obtained for beryllium abundances. In each of the 26 turnoff stars with Mo or Ru line detections and no evidence for s-process production (therefore old), we find Mo and Ru to be three to six times overabundant. In contrast, the maximum overabundance is reduced to factors of three and two for the neighboring elements zirconium and palladium. Since the overproduction peaks sharply at Mo and Ru, a low-entropy HEW is confirmed as its origin. The overabundance level of the heavy r-process elements varies significantly, from none to a factor of four, but is uncorrelated with Mo and Ru overabundances. Despite their moderate metallicity, stars in this group trace the products of different nucleosynthetic events: possibly very few events, possibly events whose output depended on environment, metallicity, or time.

Peterson, Ruth C. [Astrophysical Advances, 607 Marion Place, Palo Alto, CA 94301 (United States)

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Korea's Green Growth Strategy: Mitigating Climate Change and...  

Open Energy Info (EERE)

Korea's Green Growth Strategy: Mitigating Climate Change and Developing New Growth Engines Jump to: navigation, search Name Korea's Green Growth Strategy: Mitigating Climate Change...

242

Plant breeding Genetic variability for morphology, growth  

E-Print Network [OSTI]

and tetraploid lucerne populations (Medicago sativa L) B Julier A Porcheron, C Ecalle P Guy INRA, station d and agronomic characters of 25 populations or varieties of lucerne belonging to the M sativa complex were be a strategy of tolerance to animal feeding and to treading. Medicago sativa L = lucerne / population

Paris-Sud XI, Université de

243

From "Stages" of Business Growth to a Dynamic States Model of Entrepreneurial Growth and Change  

E-Print Network [OSTI]

From "Stages" of Business Growth to a Dynamic States Model of Entrepreneurial Growth and Change and Gumpert, 1985), and virtually all economic models of business creation follow firm birth with firm growth models of new business growth assume a limited number of distinct stages through #12;3 which businesses

Mottram, Nigel

244

Growth promotants in feeding pigs and poultry. I. Growth and feed efficiency responses  

E-Print Network [OSTI]

Review Growth promotants in feeding pigs and poultry. I. Growth and feed efficiency responses growth promoters of antibiotic type authorised in the Euro- pean Union as additives for pig and poultry) growth promoter / antibiotic / pig / poultry Résumé - Les promoteurs de croissance dans l

Paris-Sud XI, Université de

245

Comparison between the Large-Scale Environments of Moderate and Intense Precipitating Systems in the Mediterranean Region  

E-Print Network [OSTI]

The Mediterranean region is a densely populated area under climatic and environmental stresses, particularly concerning the availability of water resources, and is one of the most responsive regions to climate change stations have shown that the central-western Mediterranean faced a change in the rainfall distribution

Chaboureau, Jean-Pierre

246

An analysis of numerical trends in African elephant populations.  

E-Print Network [OSTI]

?? The elephant debate deals largely with population size, how elephant numbers change over time, how they may affect vegetation, and how their populations should (more)

Junker, Jessica

2009-01-01T23:59:59.000Z

247

active microbial populations: Topics by E-print Network  

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

of enzyme activity Paris-Sud XI, Universit de 2 MICROBIAL POPULATIONS FECAL PELLETS AND Geosciences Websites Summary: MICROBIAL POPULATIONS FECAL PELLETS AND AND...

248

A multi-population genetic algorithm for a constrained two ...  

E-Print Network [OSTI]

tree search algorithm for solving the d-dimensional knapsack problem. ...... PH A population heuristic, proposed by Beasley (2004), where a population of.

2008-12-10T23:59:59.000Z

249

Will China's Vehicle Population Grow Even Faster than Forecasted?  

E-Print Network [OSTI]

2011. Chinas Soaring Vehicle Population: Even Greater Thanversion, Chinas Soaring Vehicle Population: Even Greater2012. Modeling Future Vehicle Sales and Stock in China,

Wang, Yunshi; Teter, Jacob; Sperling, Daniel

2012-01-01T23:59:59.000Z

250

annual plant populations: Topics by E-print Network  

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

DEMOGRAPHY IN PLANTAGO:VARIATION AMONG COHORTS IN A NATURAL PLANT POPULATION DEBORAH A Roach,. Deborah 67 PLANT-ANIMAL INTERACTIONS -ORIGINAL PAPER Population density of North...

251

Spallation in ductile void growth  

SciTech Connect (OSTI)

A mathematical model of ductile void growth under the application of a mean tensile stress is applied to the problem of spallation in solids. Calculation of plate-impact spallation in copper (peak compressive stress approx. 29 kbar) shows good agreement with the dynamically measured spall signal. A second calculation, using identical material parameters, of explosively produced spallation in copper (peak compressive stress approx. 250 kbar) does very well in reproducing experimentally observed multiple spall thicknesses as observed by dynamic x-radiographic techniques. This theoretical model thus appears applicable to a wide range of dynamic uniaxial-strain loading conditions, bridging a gap that has been thought to exist for some time.

Johnson, J.N.

1981-01-01T23:59:59.000Z

252

Population inversion in Landau-quantized graphene  

E-Print Network [OSTI]

Landau level lasers have the advantage of tunability of the laser frequency by means of the external magnetic field. The crucial prerequisite of such a laser is a population inversion between optically coupled Landau levels. Efficient carrier-carrier and carrier-phonon scattering generally suppresses this effect in conventional materials. Based on microscopic calculations, we predict for the first time the occurrence of a long-lived population inversion in Landau-quantized graphene and reveal the underlying many-particle mechanisms. To guide the experimental demonstration, we present optimal conditions for the observation of a maximal population inversion in terms of experimentally accessible parameters, such as the strength of the magnetic field, pump fluence, temperature, and doping. We reveal that in addition to the tunability of the Landau-level laser frequency, also the polarization of the emitted light can be tuned via gate voltage controlling the doping of the sample.

Wendler, Florian

2014-01-01T23:59:59.000Z

253

A Decade of Population Change in Texas.  

E-Print Network [OSTI]

of community facilities. The political representation of rural dwellers is also likely to be reduced. 3. In 1960, for the first time in history, Texas had more females than males. The projected sex ratio is 96.7 males per 100 females in 1970. At the same... of the Panhandle and extending southward beyond Abilene. This area sustained a decline of one-third in rural population during the decade. Only 2 of the 29 counties (Cottle and Donley) in area 6 had an increase in rural population. Another section, state...

Skrabanek, R. L.

1963-01-01T23:59:59.000Z

254

New possible resonance for population II Cepheids  

SciTech Connect (OSTI)

Light and velocity curves of some radial mode variable stars seem to indicate a resonance where the second overtone has a period exactly half that of the fundamental mode. The two classes of stars that show this resonance by bumps in their light curves are the classical Cepheids and the population II BL Her variables. We here propose that there is another resonance for the population II W Vir variables where the ratio of the first overtone to the fundamental periods is 0.5.

Cox, A.N.; Kidman, R.B.

1984-01-01T23:59:59.000Z

255

Residential Segregation,Spatial Mismatch and Economic Growth across US Metropolitan Area  

SciTech Connect (OSTI)

Numerous studies have demonstrated the detrimental influence of residential segregation on poor inner-city residents. This study examines the impact of residential segregation on the welfare of populations in US metropolitan areas using economic growth as the indicator. Panel data of US metropolitan areas spanning 25 years, 1980 2005, are used to analyze the effect of segregation on economic growth. The results show that both racial and skill segregation have a negative impact on short and long-term economic growth, which have increased over time. Further, the negative impact of the variables associated with spatial mismatch is also revealed. The results clearly point to the need for mobility policies that favor non-White households and comprehensive strategies that promote economic opportunities in low-resource communities in the US.

Campbell, Dr Harrison [University of North Carolina, Charlotte] [University of North Carolina, Charlotte; Li, Huiping [ORNL] [ORNL

2013-01-01T23:59:59.000Z

256

Apparatus for monitoring crystal growth  

DOE Patents [OSTI]

A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes.

Sachs, Emanual M. (Watertown, MA)

1981-01-01T23:59:59.000Z

257

Method of monitoring crystal growth  

DOE Patents [OSTI]

A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes.

Sachs, Emanual M. (Watertown, MA)

1982-01-01T23:59:59.000Z

258

Optimization Online Moderation Policy  

E-Print Network [OSTI]

Optimization Online Copyright Policy Copyright Policy By submitting a paper, all authors of the paper agree that other users of Optimization Online can download

259

Genetic Diversity in Microcystis Populations of a French Storage Reservoir Assessed by Sequencing of the 16S-23S rRNA  

E-Print Network [OSTI]

Genetic Diversity in Microcystis Populations of a French Storage Reservoir Assessed by Sequencing stations with different depths and at two dif- ferent sampling times (winter and summer) in the French allows this microorganism to growth in a broad range of environmental conditions. These papers

Jacquet, Stéphan

260

Measurements of the modified conversion ratio by gamma-ray spectrometry of fuel rods for water-moderated UO[sub 2] cores  

SciTech Connect (OSTI)

The modified conversion ratio is defined as the ratio of [sup 238]U captures to total fission. Gamma-ray spectrometry of irradiated fuel rods has been introduced to measure this quantity in two types of water-moderated low-enriched UO[sub 2] cores: the standard core, called the 1.42S core, and a tight-lattice core, called the 0.56S core. The water moderator-to-fuel volume ratios V[sub m]/V[sub [line integral

Nakajima, Ken; Akai, Masanori; Suzaki, Takenori (Japan Atomic Energy Research Inst., Ibaraki (Japan). Dept. of Fuel Cycle Safety Research)

1994-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

The Population Status The American Alligator  

E-Print Network [OSTI]

Carolina by Thomas M. Murphy A Publication of the Savannah River Plant National Environmental Research Park'S SAVANNAH RIVER PLANT NATIONAL ENVIRONMENT RESEARCH PARK Copies may be obtained from Savannah River Ecology Laboratory #12;- The Population Status of the American Alligator on the Savannah River Plant, South Carolina

Georgia, University of

262

Populations of Galaxies Building a Galaxy  

E-Print Network [OSTI]

1 Populations of Galaxies · Building a Galaxy · Stellar Luminosity Functions, Mass · Starburst galaxies, Ultraluminous Infrared Galaxies (ULIRGS) #12;2 Question: How would you build a synthetic metals. · Fill in an H-R (or color-magnitude) diagram and let it evolve. · Make a synthetic spectrum

Crenshaw, Michael

263

Galaxy populations from Deep ISO Surveys  

E-Print Network [OSTI]

I discuss some of the main extra-galactic field surveys which have been undertaken by the Infrared Space Observatory (ISO). I review the findings from the source counts analysies and then examine some of the more recent detailed investigations into the explicit nature of the populations that make up these source counts.

Seb Oliver

2001-06-19T23:59:59.000Z

264

Publications on Population Peer-Reviewed Articles  

E-Print Network [OSTI]

- population nexus in the East African Horn: emerging degradation trends in rangeland and pastoral livelihood zones. Global Environmental Change 23 (6), 1525-1541. Davis J., López-Carr D. (2014) Migration) initiatives work? Evidence from WWF-sponsored projects in Africa and Asia.Proceedings of the International

Lopez-Carr, David

265

population model Harald Rybka, Jason Wong, Jorge Rivas  

E-Print Network [OSTI]

: food production = food consumption for a population of 8 billion consumption per capita is a constant

Yorke, James

266

altered root growth: Topics by E-print Network  

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

of roots was unaffected by the moderate salinity treatment while requires extra energy, which may be provided by an increase in maintenance respiration. At higher...

267

Phenomenological approach for describing environment dependent growths  

E-Print Network [OSTI]

Different classes of phenomenological universalities of environment dependent growths have been proposed. The logistic as well as environment dependent West-type allometry based biological growth can be explained in this proposed framework of phenomenological description. It is shown that logistic and environment dependent West-type growths are phenomenologically identical in nature. However there is a difference between them in terms of coefficients involved in the phenomenological descriptions. It is also established that environment independent and enviornment dependent biological growth processes lead to the same West-type biological growth equation. Involuted Gompertz function, used to describe biological growth processes undergoing atrophy or a demographic and economic system undergoing involution or regression, can be addressed in this proposed environment dependent description. In addition, some other phenomenological descriptions have been examined in this proposed framework and graphical representations of variation of different parameters involved in the description are executed.

Dibyendu Biswas; Swarup Poria

2014-12-22T23:59:59.000Z

268

Seismicity and seismic response of the Soviet-designed VVER (Water-cooled, Water moderated Energy Reactor) reactor plants  

SciTech Connect (OSTI)

On March 4, 1977, a strong earthquake occurred at Vrancea, Romania, about 350 km from the Kozloduy plant in Bulgaria. Subsequent to this event, construction of the unit 2 of the Armenia plant was delayed over two years while seismic features were added. On December 7, 1988, another strong earthquake struck northwest Armenia about 90 km north of the Armenia plant. Extensive damage of residential and industrial facilities occurred in the vicinity of the epicenter. The earthquake did not damage the Armenia plant. Following this event, the Soviet government announced that the plant would be shutdown permanently by March 18, 1989, and the station converted to a fossil-fired plant. This paper presents the results of the seismic analyses of the Soviet-designed VVER (Water-cooled, Water moderated Energy Reactor) plants. Also presented is the information concerning seismicity in the regions where VVERs are located and information on seismic design of VVERs. The reference units are the VVER-440 model V230 (similar to the two units of the Armenia plant) and the VVER-1000 model V320 units at Kozloduy in Bulgaria. This document provides an initial basis for understanding the seismicity and seismic response of VVERs under seismic events. 1 ref., 9 figs., 3 tabs.

Ma, D.C.; Gvildys, J.; Wang, C.Y.; Spencer, B.W.; Sienicki, J.J.; Seidensticker, R.W.; Purvis, E.E. III

1989-01-01T23:59:59.000Z

269

An economic analysis of a light and heavy water moderated reactor synergy: burning americium using recycled uranium  

SciTech Connect (OSTI)

An economic analysis is presented for a proposed synergistic system between 2 nuclear utilities, one operating light water reactors (LWR) and another running a fleet of heavy water moderated reactors (HWR). Americium is partitioned from LWR spent nuclear fuel (SNF) to be transmuted in HWRs, with a consequent averted disposal cost to the LWR operator. In return, reprocessed uranium (RU) is supplied to the HWRs in sufficient quantities to support their operation both as power generators and americium burners. Two simplifying assumptions have been made. First, the economic value of RU is a linear function of the cost of fresh natural uranium (NU), and secondly, plutonium recycling for a third utility running a mixed oxide (MOX) fuelled reactor fleet has been already taking place, so that the extra cost of americium recycling is manageable. We conclude that, in order for this scenario to be economically attractive to the LWR operator, the averted disposal cost due to partitioning americium from LWR spent fuel must exceed 214 dollars per kg, comparable to estimates of the permanent disposal cost of the high level waste (HLW) from reprocessing spent LWR fuel. (authors)

Wojtaszek, D.; Edwards, G. [Atomic Energy of Canada Ltd., Chalk River Laboratories, Chalk River, Ontario (Canada)

2013-07-01T23:59:59.000Z

270

INTERACTIONS BETWEEN MODERATE- AND LONG-PERIOD GIANT PLANETS: SCATTERING EXPERIMENTS FOR SYSTEMS IN ISOLATION AND WITH STELLAR FLYBYS  

SciTech Connect (OSTI)

The chance that a planetary system will interact with another member of its host star's nascent cluster would be greatly increased if gas giant planets form in situ on wide orbits. In this paper, we explore the outcomes of planet-planet scattering for a distribution of multi-planet systems that all have one of the planets on an initial orbit of 100 AU. The scattering experiments are run with and without stellar flybys. We convolve the outcomes with distributions for protoplanetary disk and stellar cluster sizes to generalize the results where possible. We find that the frequencies of large mutual inclinations and high eccentricities are sensitive to the number of planets in a system, but not strongly to stellar flybys. However, flybys do play a role in changing the low and moderate portions of the mutual inclination distributions, and erase dynamically cold initial conditions on average. Wide-orbit planets can be mixed throughout the planetary system, and in some cases, can potentially become hot Jupiters, which we demonstrate using scattering experiments that include a tidal damping model. If planets form in situ on wide orbits, then there will be discernible differences in the proper-motion distributions of a sample of wide-orbit planets compared with a pure scattering formation mechanism. Stellar flybys can enhance the frequency of ejections in planetary systems, but autoionization is likely to remain the dominant source of free-floating planets.

Boley, Aaron C.; Payne, Matthew J.; Ford, Eric B. [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, P.O. Box 112055, Gainesville, FL 32611 (United States)

2012-07-20T23:59:59.000Z

271

Thermomechanical cavity-growth modeling  

SciTech Connect (OSTI)

The results of recent field tests, laboratory studies, and modeling efforts in UCG have indicated that the thermal and mechanical properties of coal may be the controlling parameters in determining initial cavity shape. In examining this possibility, laboratory efforts have been directed at determining temperature and bedding plane dependent properties of coal. A thermomechanical model which uses these properties has indicated that the cavity shapes seen at both the Hanna and Hoe Creek test sites result from the temperature dependent properties of the coal such as the coefficients of thermal expansion and the elastic moduli. The model determines stress levels and uses a simple bedding plane dependent stress failure mechanism to determine cavity growth.

Glass, R.E.

1982-01-01T23:59:59.000Z

272

Synthetic heparin-binding growth factor analogs  

DOE Patents [OSTI]

The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain that binds a heparin-binding growth factor receptor, covalently bound to a hydrophobic linker, which is in turn covalently bound to a non-signaling peptide that includes a heparin-binding domain. The synthetic heparin-binding growth factor analogs are useful as soluble biologics or as surface coatings for medical devices.

Pena, Louis A.; Zamora, Paul; Lin, Xinhua; Glass, John D.

2007-01-23T23:59:59.000Z

273

Energy grades and economic growth  

SciTech Connect (OSTI)

In 1709 William Darby invented the coking process that led to the use of coal in eighteenth century England. From an economic standpoint, one could say that this event more than any other ushered in the industrial revolution with its dependence on coal and steel produced with coal. However, from an engineering perspective, there is another cause of the industrial revolution that is more subtle-the physical makeup of the energy resources available to England. According to Simon Kuznets, an economic epoch, i.e., a period of time defined by rapid population increase for a given region, {open_quotes}is determined and shaped by the application and ramification of an {open_quote}epochal{close_quote} innovation{close_quotes}, in other words, new significant technologies.

Reynolds, D.B.

1994-12-31T23:59:59.000Z

274

Red Galaxy Growth and the Halo Occupation Distribution  

E-Print Network [OSTI]

We have traced the past 7 Gyr of red galaxy stellar mass growth within dark matter halos. We have determined the halo occupation distribution, which describes how galaxies reside within dark matter halos, using the observed luminosity function and clustering of 40,696 0.2red galaxies in Bootes. Half of 10^{11.9} Msun/h halos host a red central galaxy, and this fraction increases with increasing halo mass. We do not observe any evolution of the relationship between red galaxy stellar mass and host halo mass, although we expect both galaxy stellar masses and halo masses to evolve over cosmic time. We find that the stellar mass contained within the red population has doubled since z=1, with the stellar mass within red satellite galaxies tripling over this redshift range. In cluster mass halos most of the stellar mass resides within satellite galaxies and the intra-cluster light, with a minority of the stellar mass residing within central galaxies. The stellar masses of the most luminous red central galaxies are proportional to halo mass to the power of a third. We thus conclude that halo mergers do not always lead to rapid growth of central galaxies. While very massive halos often double in mass over the past 7 Gyr, the stellar masses of their central galaxies typically grow by only 30%.

Michael J. I. Brown; Zheng Zheng; Martin White; Arjun Dey; Buell T. Jannuzi; Andrew J. Benson; Kate Brand; Mark Brodwin; Darren J. Croton

2008-04-15T23:59:59.000Z

275

Optimization Online - Robust Growth-Optimal Portfolios  

E-Print Network [OSTI]

May 24, 2014 ... Abstract: The growth-optimal portfolio is designed to have maximum ... the asset return distribution, which is not directly observable but must be...

Napat Rujeerapaiboon

2014-05-24T23:59:59.000Z

276

Essays on Indias Economic Growth  

E-Print Network [OSTI]

initial euphoria about liberalisation, a revisionist viewand industrial policy liberalisation. Three, growth in thebuilt up under the pre-liberalisation policy regime), their

Singh, Nirvikar

2009-01-01T23:59:59.000Z

277

Theoretical Ecology: Continued growth and success  

E-Print Network [OSTI]

EDITORIAL Theoretical Ecology: Continued growth and successof areas in theoretical ecology. Among the highlights areyear represent theoretical ecology from around the world: 20

Hastings, Alan

2010-01-01T23:59:59.000Z

278

"Conflict Between Economic Growth and Environmental Protection...  

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

Dr. Bryan Czech, resident, Center for the Advancement of the Steady State of the Economy Presentation: Presentation Abstract: Abstract Conflict Between Economic Growth and...

279

IN THIS ISSUE Excessive Cotton Growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  

E-Print Network [OSTI]

AGRONOMY NOTES July, 2004 IN THIS ISSUE COTTON Excessive Cotton Growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Management Influence on Hardlock Cotton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Wet Conditions and Nitrogen Applications on Cotton . . . . . . . . . . . . . . . . . . . . . 2

Watson, Craig A.

280

Evolutionary optimization of rotational population transfer  

SciTech Connect (OSTI)

We present experimental and numerical studies on control of rotational population transfer of NO(J=1/2) molecules to higher rotational states. We are able to transfer 57% of the population to the J=5/2 state and 46% to J=9/2, in good agreement with quantum mechanical simulations. The optimal pulse shapes are composed of pulse sequences with delays corresponding to the beat frequencies of states on the rotational ladder. The evolutionary algorithm is limited by experimental constraints such as volume averaging and the finite laser intensity used, the latter to circumvent ionization. Without these constraints, near-perfect control (>98%) is possible. In addition, we show that downward control, moving molecules from high to low rotational states, is also possible.

Rouzee, Arnaud; Vrakking, Marc J. J. [FOM Institute for Atomic and Molecular Physics (AMOLF), Science Park 104, NL-1098 XG Amsterdam (Netherlands); Max Born Institut, Max Born Strasse 2A, D-12489, Berlin (Germany); Ghafur, Omair; Gijsbertsen, Arjan [FOM Institute for Atomic and Molecular Physics (AMOLF), Science Park 104, NL-1098 XG Amsterdam (Netherlands); Vidma, Konstantin; Meijer, Afric; Zande, Wim J. van der; Parker, David [Institute of Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, NL-6500 GL Nijmegen (Netherlands); Shir, Ofer M.; Baeck, Thomas [Leiden Institute of Advanced Computer Science (LIACS), Niels Bohrweg 1, NL-2333 CA Leiden (Netherlands)

2011-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Population dynamics of the Concho water snake  

E-Print Network [OSTI]

the upper Colorado and Concho river systems of central Texas. It is 1 of 2 subspecies, the other being the Brazos water snake (Nerodia harteri harteri) which occurs in the Brazos river system of north-central Texas, Together they comprise the only species..., reproductive potential, mortality, and movements. williams predicted that habitat degradation resulting from the creation of Spence Reservoir, 2 km above his study site, would be detrimental to the Concho water snake population. Since the impoundment...

Mueller, James Michael

1990-01-01T23:59:59.000Z

282

The M31 population of supersoft sources  

E-Print Network [OSTI]

The 1991 ROSAT PSPC M31 X-ray point source catalog has been screened in order to set up a sample of candidate supersoft sources in this galaxy, additional to the 16 supersoft sources of Supper et al. (1997). 26 candidates have been found. Absorbing hydrogen column densities, effective temperatures and white dwarf masses (assuming the sources are on the stability line of surface nuclear burning) are derived. An observed white dwarf mass distribution is derived which indicates that the masses are constrained to values above 0.90 solar masses. The entire population of supersoft sources in M31 is estimated taking a theoretical white dwarf mass distribution into account, assuming that the observationally derived sample is restricted to white dwarf masses above 0.90 solar, and taking into account that the gas and the source population have a different scale height. A total number of at least 200-500 and at most 6,000-15,000 sources is deduced depending on the used galaxy N_H model, making use of the population synthesis calculation of Yungelson (1996). The spatial distribution favors a disk (or spiral-arm) dominated young stellar population with a ratio of 1/(4-7) of bulge/disk systems. Assuming that all supersoft sources with masses in excess of 0.5 solar masses are progenitors of supernovae of type Ia, a SN Ia rate of (0.8-7) 10^-3 yr^-1 is derived for M31 based on these progenitors. Supersoft sources might account for 20-100% of the total SN Ia rate in a galaxy like M31.

Peter Kahabka

1999-01-12T23:59:59.000Z

283

Understanding Regional Economic Growth in IndiaUnderstanding Regional Economic Growth in India Understanding Regional Economic  

E-Print Network [OSTI]

Understanding Regional Economic Growth in IndiaUnderstanding Regional Economic Growth in India Understanding Regional Economic Growth in India* Jeffrey D. Sachs Director The Earth Institute at Columbia_ramiah@yahoo.co.uk Asian Economic Papers 1:3 © 2002 The Earth Institute at Columbia University and the Massachusetts

284

Growth promotants in feeding pigs and poultry. III. Alternatives to antibiotic growth promotants  

E-Print Network [OSTI]

Review Growth promotants in feeding pigs and poultry. III. Alternatives to antibiotic growth) Abstract - On the basis of improving effects of antibiotic growth promoters in pigs and poultry being / antibiotic / pig / poultry / alternatives to antibiotics Résumé - Les promoteurs de croissance dans l

Paris-Sud XI, Université de

285

WANDERING STARS: AN ORIGIN OF ESCAPED POPULATIONS  

SciTech Connect (OSTI)

We demonstrate that stars beyond the virial radii of galaxies may be generated by the gravitational impulse received by a satellite as it passes through the pericenter of its orbit around its parent. These stars may become energetically unbound (escaped stars), or may travel to further than a few virial radii for longer than a few Gyr, but still remain energetically bound to the system (wandering stars). Larger satellites (10%-100% the mass of the parent), and satellites on more radial orbits are responsible for the majority of this ejected population. Wandering stars could be observable on Mpc scales via classical novae, and on 100 Mpc scales via Type Ia supernova. The existence of such stars would imply a corresponding population of barely bound, old, high-velocity stars orbiting the Milky Way, generated by the same physical mechanism during the Galaxy's formation epoch. Sizes and properties of these combined populations should place some constraints on the orbits and masses of the progenitor objects from which they came, providing insight into the merging histories of galaxies in general and the Milky Way in particular.

Teyssier, Maureen; Johnston, Kathryn V. [Department of Astronomy, Columbia University, Pupin Physics Laboratory, 550 West 120th Street, New York, NY 10027 (United States); Shara, Michael M. [American Museum of Natural History, 79th Street and Central Park West, New York, NY 10024-5192 (United States)

2009-12-10T23:59:59.000Z

286

Social Capital and Growth Bryan R. Routledge ,  

E-Print Network [OSTI]

, labor mobility, and social capital. The key assumption is that technological innovation, which drivesSocial Capital and Growth Bryan R. Routledge , Joachim von Amsberg § March 2002 Revised July 2002 Abstract We define and characterize social capital in a simple growth model. We capture social capital

287

Beer and Economic Growth Dr. Martin Shields  

E-Print Network [OSTI]

Beer and Economic Growth Dr. Martin Shields Regional Economics Institute Colorado State University #12;The Idea · Regional economic growth depends, in part, on the ability to sell goods and services) ­ Industry employment is 35 times more concentrated in Larimer County than the US average! #12;Economic

288

Understanding Regional Economic Growth in India  

E-Print Network [OSTI]

Understanding Regional Economic Growth in India Jeffrey D. Sachs, Nirupam Bajpai and Ananthi Ramiah Papers #12;Understanding Regional Economic Growth in India Jeffrey D. Sachs Center for International Development (CID) Harvard University Ananthi_Ramiah@harvard.edu This paper was prepared for the Asian Economic

289

ORIGINAL ARTICLE Sustainable syntrophic growth of Dehalococcoides  

E-Print Network [OSTI]

with the capabilities of DVH to ferment lactate to provide H2 and acetate for growth, along with potential benefits from proton translocation, cobalamin-salvaging and amino acid biosynthesis, whereas MC in the tri). They exhibit low growth rates, specific obligate nutrient requirements (hydrogen as electron donor, acetate

Alvarez-Cohen, Lisa

290

Bifurcation Analysis of Endogenous Growth Models  

E-Print Network [OSTI]

that the model could produce chaotic dynamics, but our analysis cannot confirm that conjecture. Further this thesis analyses the dynamics of a variant of Jones semi-endogenous growth model "Sources of US Economic growth in a World of Ideas" The American Economic...

Ghosh, Taniya

2013-05-31T23:59:59.000Z

291

Original article Effects of sodium chloride salinity on root growth  

E-Print Network [OSTI]

either 50 or 250 mM NaCl. Both moderate and high salinity treatment strongly altered root elongation. In contrast, specific respiration of roots was unaffected by the moderate salinity treatment while ecosystems [11].The effects of snow melt have been documented for wetland ecosystems [14] but

Paris-Sud XI, Université de

292

Digital electronic bone growth stimulator  

DOE Patents [OSTI]

The present invention relates to the electrical treatment of biological tissue. In particular, the present invention discloses a device that produces discrete electrical pulse trains for treating osteoporosis and accelerating bone growth. According to its major aspects and broadly stated, the present invention consists of an electrical circuit configuration capable of generating Bassett-type waveforms shown with alternative signals provide for the treatment of either fractured bones or osteoporosis. The signal generator comprises a quartz clock, an oscillator circuit, a binary divider chain, and a plurality of simple, digital logic gates. Signals are delivered efficiently, with little or no distortion, and uniformly distributed throughout the area of injury. Perferably, power is furnished by widely available and inexpensive radio batteries, needing replacement only once in several days. The present invention can be affixed to a medical cast without a great increase in either weight or bulk. Also, the disclosed stimulator can be used to treat osteoporosis or to strengthen a healing bone after the cast has been removed by attaching the device to the patient`s skin or clothing.

Kronberg, J.W.

1993-01-01T23:59:59.000Z

293

CONSERVATION OF THE IRISH POPULATIONS OF THE POLLAN  

E-Print Network [OSTI]

CONSERVATION OF THE IRISH POPULATIONS OF THE POLLAN COREGONUS AUTUMNALIS Robert Rosell, C. Harrod on the status of the four extant populations and proposed possible conservation measures. This paper updates

McCarthy, T.K.

294

Evolutionary dynamics in set structured populations Corina E. Tarnitaa  

E-Print Network [OSTI]

Evolutionary dynamics in set structured populations Corina E. Tarnitaa , Tibor Antala , Hisashi a powerful method to study dynamical population structure: evolutionary set theory. The individuals of popu- lation structure on evolutionary and ecological dynamics. These approaches include spatial models

Nowak, Martin A.

295

Ecosystem-specific selection pressures revealed through comparative population genomics  

E-Print Network [OSTI]

Bacterial populations harbor vast genetic diversity that is continually shaped by abiotic and biotic selective pressures, as well as by neutral processes. Individuals coexisting in the same geographically defined population ...

Coleman, Maureen L.

296

Drilling Addendum to Resource Assessment of Low- and Moderate-Temperature Geothermal Waters in Calistoga, Napa County, California  

SciTech Connect (OSTI)

This addendum report presents the results of the California Division of Mines and Geology (CDMG) drilling program at Calistoga, California, which was the final geothermal-resource assessment investigation performed under terms of the second year contract (1979-80) between the U.S. Department of Energy (DOE) and the CDMG under the State Coupled Program. This report is intended to supplement information presented in CDMG's technical report for the project year, ''Resource Assessment of Low- and Moderate-Temperature Geothermal Waters in Calistoga, Napa County, California''. During the investigative phase of the CDMG's Geothermal Project, over 200 well-driller's reports were obtained from the Department of Water Resources (DWR). It was hoped that the interpretation and correlation of these logs would reveal the subsurface geology of the Upper Napa Valley and also provide a check for the various geophysical surveys that were performed in the course of the study. However, these DWR driller logs proved to be inadequate due to the brief, non-technical, and erroneous descriptions contained on the logs. As a result of the lack of useable drill-hole data, and because information was desired from,deeper horizons, it became evident that drilling some exploratory holes would be necessary in order to obtain physical evidence of the stratigraphy and aquifers in the immediate Calistoga area. Pursuant to this objective, a total of twelve sites were selected--four under jurisdiction of Napa County and eight under jurisdiction of the City of Calistoga. A moratorium is currently in existence within Napa County on most geothermal drilling, and environmental and time constraints precluded CDMG from obtaining the necessary site permits within the county. However, a variance was applied for and obtained from the City of Calistoga to allow CDMG to drill within the city limits. With this areal constraint and also funding limits in mind, six drilling sites were selected on the basis of (1) proximity to areas where geophysical surveys had been performed, (2) accessibility of the site for drill rig setup, and (3) favorability for obtaining the maximum information possible concerning the geology and the resources. Necessary landowner permission and permits were secured for these sites, and actual drilling began on December 17, 1980. Drilling was terminated on February 4, 1981, with the completion of three holes that ranged in depth from 205 to 885 feet. Use of a relatively new drilling technique called the Dual Tube Method enabled the collection of precise subsurface data of a level of detail never before obtained in the Calistoga area. As a result, a totally new and unexpected picture of the geothermal reservoir conditions there has been obtained, and is outlined in this addendum report.

Taylor, Gary C.; Bacon, C. Forrest; Chapman, Rodger H.; Chase, Gordon W.; Majmundar, Hasmukhrai H.

1981-05-01T23:59:59.000Z

297

Decommissioning the Romanian Water-Cooled Water-Moderated Research Reactor: New Environmental Perspective on the Management of Radioactive Waste  

SciTech Connect (OSTI)

Pre-feasibility and feasibility studies were performed for decommissioning of the water-cooled water-moderated research reactor (WWER) located in Bucharest - Magurele, Romania. Using these studies as a starting point, the preferred safe management strategy for radioactive wastes produced by reactor decommissioning is outlined. The strategy must account for reactor decommissioning, as well as for the rehabilitation of the existing Radioactive Waste Treatment Plant and for the upgrade of the Radioactive Waste Disposal Facility at Baita-Bihor. Furthermore, the final rehabilitation of the laboratories and ecological reconstruction of the grounds need to be provided for, in accordance with national and international regulations. In accordance with IAEA recommendations at the time, the pre-feasibility study proposed three stages of decommissioning. However, since then new ideas have surfaced with regard to decommissioning. Thus, taking into account the current IAEA ideology, the feasibility study proposes that decommissioning of the WWER be done in one stage to an unrestricted clearance level of the reactor building in an Immediate Dismantling option. Different options and the corresponding derived preferred option for waste management are discussed taking into account safety measures, but also considering technical, logistical and economic factors. For this purpose, possible types of waste created during each decommissioning stage are reviewed. An approximate inventory of each type of radioactive waste is presented. The proposed waste management strategy is selected in accordance with the recommended international basic safety standards identified in the previous phase of the project. The existing Radioactive Waste Treatment Plant (RWTP) from the Horia Hulubei Institute for Nuclear Physics and Engineering (IFIN-HH), which has been in service with no significant upgrade since 1974, will need refurbishing due to deterioration, as well as upgrading in order to ensure the plant complies with current safety standards. This plant will also need to be adapted to treat wastes generated by WWER dismantling. The Baita-Bihor National Radioactive Waste Disposal Facility consists of two galleries in an abandoned uranium mine located in the central-western part of the Bihor Mountains in Transylvania. The galleries lie at a depth of 840 m. The facility requires a considerable overhaul. Several steps recommended for the upgrade of the facility are explored. Environmental concerns have lately become a crucial part of the radioactive waste management strategy. As such, all decisions must be made with great regard for land utilization around nuclear objectives. (authors)

Barariu, G.; Giumanca, R. [Romanian Authority for Nuclear Activity (RAAN), Subsidiary of Technology and Engineering for Nuclear Objectives (SITON), 111 Atomistilor St., Bucuresti-Magurele, Ilfov (Romania)

2006-07-01T23:59:59.000Z

298

Emergence of Attention within a Neural Population  

E-Print Network [OSTI]

We present a dynamic model of attention based on the Continuum Neural Field Theory that explains attention as being an emergent property of a neural population. This model is experimentally proved to be very robust and able to track one static or moving target in the presence of very strong noise or in the presence of a lot of distractors, even more salient than the target. This attentional property is not restricted to the visual case and can be considered as a generic attentional process of any spatio-temporal continuous input.

299

ORISE Resources: Population Monitoring in Radiation Emergencies  

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 JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | NationalJohnSecurityControlsOMB PoliciesInternetPopulation

300

On the properties of massive Population III stars and metal-free stellar populations  

E-Print Network [OSTI]

We present realistic models for massive Population III stars and stellar populations based on non-LTE model atmospheres, recent stellar evolution tracks and up-to-date evolutionary synthesis models, to study their spectral properties, including their dependence on age, star formation history, and IMF. (..) The main results regarding integrated stellar populations are: * For young bursts and the case of a constant SFR, nebular continuous emission - neglected in previous studies - dominates the spectrum redward of Lyman-alpha (...). Therefore predicted emission line equivalent widths are considerably smaller than found in earlier studies, whereas the detection of the continuum is eased. Nebular line and continuous emission strongly affect the broad band photometric properties of Pop III objects. * Due to stellar evolution, the hardness of the ionising spectrum decreases rapidly, leading to the disappearance of the characteristic HeII 1640 recombination lines after ~ 3 Myr in instantaneous bursts. * The relative...

Schrer, D

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Revisiting the Uniqueness of Simple Demographics in the US Population  

E-Print Network [OSTI]

Revisiting the Uniqueness of Simple Demographics in the US Population Philippe Golle Palo Alto% of the US population can be uniquely identified by gen- der, ZIP code and full date of birth. This short paper revisits the uniqueness of simple demographics in the US population based on the most recent

Golle, Philippe

302

Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers  

E-Print Network [OSTI]

Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers David L. Carr are significantly associated at the global and regional scales, evidence for population links to deforestation of thought on population­environment theories relevant to deforestation in tropical agricultural frontiers

Lopez-Carr, David

303

Genetic Variability and Population Differentiation in Captive Baird's Tapirs  

E-Print Network [OSTI]

one of housing and displaying as diverse a collection of species as possible, to one of creating self and Ballou, 1986; Soule et al., 1986]. One obstacle to achieving a self-sustaining captive population- sustaining captive populations that may one day act as a source for restocking wild populations [Ralls

Ashley, Mary V.

304

VOL I, ISSUE 1Quarterly Edition Population and Public Policy  

E-Print Network [OSTI]

VOL I, ISSUE 1Quarterly Edition Population and Public Policy Migration to western Canada increases affect and are affected by public policy decisions. Even the sheer size of the population, the subject of this article, affects public policy because larger populations can usually support a wider range of public

Saskatchewan, University of

305

Population stability, cooperation, and the invasibility of the human species  

E-Print Network [OSTI]

a mechanism for these outcomes by modifying a simple density-dependent population model to allow varying populations expanded out of Africa and spread rapidly across the majority of the earth's land surfacePopulation stability, cooperation, and the invasibility of the human species Marcus J. Hamiltona

Brown, James H.

306

Ecological factors and human threats both drive wildfowl population declines  

E-Print Network [OSTI]

; human population density. Correspondence Peter R. Long, Department of Biology and Biochemistry, Africa and Asia. Second, we use phylogenetic comparative analyses to test whether population size, globalEcological factors and human threats both drive wildfowl population declines P. R. Long1 , T. Sz

307

Genotype-Imputation Accuracy across Worldwide Human Populations  

E-Print Network [OSTI]

and South Asia, the Americas, Oceania, the Middle East, and Africa. For each population, we identified- density reference panels. Specifically, study samples have typically derived from populations of NorthernARTICLE Genotype-Imputation Accuracy across Worldwide Human Populations Lucy Huang,1,2,* Yun Li,1

Rosenberg, Noah

308

Hypersonic Measurements of Roughness-Induced Transient Growth  

E-Print Network [OSTI]

The effects of surface roughness on boundary-layer disturbance growth and laminar-to-turbulent transition are not well understood, especially in hypersonic boundary layers. The transient growth mechanism that produces algebraic growth of stream wise...

Sharp, Nicole Susanne

2014-04-17T23:59:59.000Z

309

The Formation of Population III Binaries  

E-Print Network [OSTI]

We explore the possibility for the formation of Population III binaries. The collapse of a rotating cylinder is simulated with a three-dimensional, high-resolution nested grid, assuming the thermal history of primordial gas. The simulations are done with dimensionless units, and the results are applicable to low-mass as well as massive systems by scaling with the initial density. We find that if the initial angular momentum is as small as $\\beta \\approx 0.1$, where $\\beta$ is the ratio of centrifugal force to pressure force, then the runaway collapse of the cloud stops to form a rotationally-supported disk. After the accretion of the envelope, the disk undergoes a ring instability, eventually fragmenting into a binary. If the initial angular momentum is relatively large, a bar-type instability arises, resulting in the collapse into a single star through rapid angular momentum transfer. The present results show that a significant fraction of Pop III stars are expected to form in binary systems, even if they are quite massive or less massive. The cosmological implications of Population III binaries are briefly discussed.

Kazuya Saigo; Tomoaki Matsumoto; Masayuki Umemura

2004-10-29T23:59:59.000Z

310

Collisional population transfer in yterbium ions  

SciTech Connect (OSTI)

Long-lived metastable states of Yb+ ions are used for atomic frequency standards, precision measurements, and quantum information research. The effect of population trapping and transfer in these states must be well understood. We report here the transfer of Yb+ ions into the long-lived {sup 2}F{sub 7/2} state by means of collisions between He buffer gas and Yb+ ions held in a linear Paul trap. Transfer rates were measured as functions of buffer-gas pressure and repump-laser power, and the collisional population transfer rates were extracted. The measured transfer rate coefficients are 8.32(75)x10-11 and 8.65(33)x10-11 cm3/s for the collisional processes {sup 2}P{sub 1/2}{yields}{sup 2}D{sub 5/2} and {sup 2}D{sub 3/2}{yields}{sup 2}F{sub 7/2}, respectively.

Schauer, Martin Michael [Los Alamos National Laboratory; Torgerson, Justin R [Los Alamos National Laboratory; Danielson, Jeremy R [Los Alamos National Laboratory; Zhao, Xinxin [Los Alamos National Laboratory; Nguyen, Ahn - Tuan [UNIV OF PITTSBURGH; Wang, Li - Bang [NATIONAL TSING HUA UNIV

2009-01-01T23:59:59.000Z

311

A nuclear criticality safety assessment of the loss of moderation control in 2 1/2 and 10-ton cylinders containing enriched UF{sub 6}  

SciTech Connect (OSTI)

Moderation control for maintaining nuclear criticality safety in 2 {1/2}-ton, 10-ton, and 14-ton cylinders containing enriched uranium hexafluoride (UF{sub 6}) has been used safely within the nuclear industry for over thirty years, and is dependent on cylinder integrity and containment. This assessment evaluates the loss of moderation control by the breaching of containment and entry of water into the cylinders. The first objective of this study was to estimate the required amounts of water entering these large UF{sub 6} cylinders to react with, and to moderate the uranium compounds sufficiently to cause criticality. Hypothetical accident situations were modeled as a uranyl fluoride (UO{sub 2}F{sub 2}) slab above a UF{sub 6} hemicylinder, and a UO{sub 2}F{sub 2} sphere centered within a UF{sub 6} hemicylinder. These situations were investigated by computational analyses utilizing the KENO V.a Monte Carlo Computer Code. The results were used to estimate both the masses of water required for criticality, and the limiting masses of water that could be considered safe. The second objective of the assessment was to calculate the time available for emergency control actions before a criticality would occur, i.e., a {open_quotes}safetime{close_quotes}, for various sources of water and different size openings in a breached cylinder. In the situations considered, except the case for a fire hose, the safetime appears adequate for emergency control actions. The assessment shows that current practices for handling moderation controlled cylinders of low enriched UF{sub 6}, along with the continuation of established personnel training programs, ensure nuclear criticality safety for routine and emergency operations.

Newvahner, R.L. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States); Pryor, W.A. [PAI Corp., Oak Ridge, TN (United States)

1991-12-31T23:59:59.000Z

312

Economic Redevelopment and Growth Program (New Jersey)  

Broader source: Energy.gov [DOE]

Economic Redevelopment and Growth program (ERG) is an incentive for real estate development projects that have a financing gap, defined as having insufficient revenues to support the project debt...

313

New Jersey Business Growth Fund (New Jersey)  

Broader source: Energy.gov [DOE]

Creditworthy small or mid-sized companies that are creating or retaining jobs in New Jersey can apply for financing through the New Jersey Business Growth Fund, a joint program of the EDA and PNC...

314

Selective anisotropic growth of zeolite crystals  

E-Print Network [OSTI]

Precise control over particle size and morphology is emerging as a critical issue in the design of nanostructured materials. The explosive growth of nanoparticle synthesis is a good example of this. As material chemists have developed the ability...

Desai, Tasha April

2013-02-22T23:59:59.000Z

315

Essays on Productivity Change, Growth, and Development  

E-Print Network [OSTI]

: To replicate an industrial revolution: from exogenous to endogenous growth In the last quarter of the second millennium many countries experienced, simultane- ously, an industrial revolution (an exponential increase

Sadeh, Norman M.

316

Crack propagation driven by crystal growth  

SciTech Connect (OSTI)

Crystals that grow in confinement may exert a force on their surroundings and thereby drive crack propagation in rocks and other materials. We describe a model of crystal growth in an idealized crack geometry in which the crystal growth and crack propagation are coupled through the stress in the surrounding bulk solid. Subcritical crack propagation takes place during a transient period, which may be very long, during which the crack velocity is limited by the kinetics of crack propagation. When the crack is sufficiently large, the crack velocity becomes limited by the kinetics of crystal growth. The duration of the subcritical regime is determined by two non-dimensional parameters, which relate the kinetics of crack propagation and crystal growth to the supersaturation of the fluid and the elastic properties of the surrounding material.

A. Royne; Paul Meaking; A. Malthe-Sorenssen; B. Jamtveit; D. K. Dysthe

2011-10-01T23:59:59.000Z

317

Spectroscopic studies of metal growth on oxides  

E-Print Network [OSTI]

: Chemistry SPECTROSCOPIC STUDIES OF METAL GROWTH ON OXIDES A Thesis by KAI LUO Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style a d content by: avid W. Goodman.... , Jilin University, P. R. China Chair of Advisory Committee: Dr, David W. Goodman Metal/oxide chemistry and metal cluster growth on oxides are fundamental to our understanding of the catalytic activity and selectivity of metal catalysts, thus...

Luo, Kai

2000-01-01T23:59:59.000Z

318

Observations on the growth of Tetrahymena pyriformis strain W in a medium-intensity, static magnetic field  

E-Print Network [OSTI]

Morphological Considerations Normal Growth Characteristics CHAPTER III. Experimental Procedure Material 16 Method 16 CHAPTER IV. Discussion of Results. 24 Primary Culture Data 24 Subculture Data 24 CHAPTER V. Statistical Analysis. SUMMARY ~ ADDENDUM.... The generation time, or time required for the population to double itself, is a point of conjecture. Many different values have been reported in the literature, ranging from lows of 2, 5 hours (McCashland and Johnson, 1957), 2. 78 hours (Kidder, 1941b), and 3...

Laird, Robert Joel

1966-01-01T23:59:59.000Z

319

Compensatory mechanisms in fish populations: Literature reviews: Volume 1, Critical evaluation of case histories of fish populations experiencing chronic exploitation or impact: Final report  

SciTech Connect (OSTI)

This study includes case histories of certain fish species which are experiencing chronic perturbations and related literature pertaining to compensation processes. ''Compensation'' has been defined as the ability of fish to offset the population reduction caused by natural or man-induced stresses. Certain compensation methods are widely accepted, and include cannibalism, competition, disease, growth and predation, among others. These compensation methods are examined in relation to each fish species included in the study. Stock-recruit relationships and empirical observations of changes in growth and mortality have been the focus of much of the background on compensation. One of the conclusions drawn from this study is that a significant amount of recruitment variability exists and can be attributed to environmental (rather than compensatory) factors. The stock-recruitment problem appears to be the most significant scientific problem related to compensation in the types of fish included in this study. Results of the most recent studies of the American shad support this theory. Life histories, breeding biology and other pertinent data relating to each species included in the study will be found in the appendices.

Saila, S.B.; Chen, X.; Erzini, K.; Martin, B.

1987-05-01T23:59:59.000Z

320

Direct Visualization of Initial SEI Morphology and Growth Kinetics...  

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

Initial SEI Morphology and Growth Kinetics During Lithium Deposition by in situ Electrochemical Direct Visualization of Initial SEI Morphology and Growth Kinetics During Lithium...

Note: This page contains sample records for the topic "moderate population growth" 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

NREL: News - NREL's Industry Growth Forum Brings Together Energy...  

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

4014 NREL's Industry Growth Forum Brings Together Energy Innovators Event recognizes the top clean energy technologies and startup businesses October 30, 2014 The Industry Growth...

322

Epitaxial Growth and Properties of Doped Transition Metal and...  

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

of crystalline oxide film growth using vacuum methods is reviewed and discussed with an eye toward gaining fundamental insights into the relationships between growth process and...

323

New Partners for Smart Growth Conference | Department of Energy  

Office of Environmental Management (EM)

New Partners for Smart Growth Conference is the nation's largest smart growth and sustainability conference. The three-day conference is themed, "Practical Tools and Innovative...

324

Crystalline Ice Growth on Pt(111): Observation of a Hydrophobic...  

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

Crystalline Ice Growth on Pt(111): Observation of a Hydrophobic Water Monolayer. Crystalline Ice Growth on Pt(111): Observation of a Hydrophobic Water Monolayer. Abstract: The...

325

PUBLISHED ONLINE: 7 FEBRUARY 2010 | DOI: 10.1038/NGEO756 Deforestation driven by urban population growth  

E-Print Network [OSTI]

LETTERS PUBLISHED ONLINE: 7 FEBRUARY 2010 | DOI: 10.1038/NGEO756 Deforestation driven by urban-based and international demands for agricultural products as drivers of deforestation. The strong trend in movement for clearing tropical forests. We therefore suggest that policies to reduce deforestation among local, rural

Uriarte, Maria

326

A positive vision for restoring balance to the carbon cycle, while allowing for global growth in population and wellbeing  

E-Print Network [OSTI]

of the Earth is located between one solid mass, whose central heat may surpass that of incandescent matter, into dark radiant heat... This distinction between luminous heat and dark heat explains the increase basis for influence of Water and CO2 on Earth's temperature "As a dam built across a river causes

Eisen, Michael

327

Smart Growth, New Urbanism and Diversity: Progressive Planning Movements in America and Their Impact on Poor and Minority Ethnic Populations  

E-Print Network [OSTI]

at 281-82. 33. See Timothy Beatley & Richard Collins, Smartsee Vicki Been, Comment on Beatley and Collins' Smart Growthsolutions to-the 35. Beatley & Collins, supra note 33, at

Kushner, James A.

2002-01-01T23:59:59.000Z

328

Abstract Given accelerating trends of deforestation and human population growth, immediate and innovative solutions to conserve biodiversity are sorely needed.  

E-Print Network [OSTI]

.O. Box 967, Fort Portal, Uganda e-mail: twino04@yahoo.com R. Reyna-Hurtado Investigador Titular A, ECOSUR-Campeche, Avenida Rancho s/n, Poligono 2, Lerma, Campeche 24500El, Mexico e-mail: rreyna@ecosur.mx J.M. Rothman

Rothman, Jessica M.

329

Variation in, inheritance of, and correlations between a number of growth and form traits in three sycamore populations  

E-Print Network [OSTI]

gravity, and branch angle. The three plantations were located at Wash1ngton Parish Louis1ana, and Montgomery and Angelina Counties 1n Texas; they contained 21 common half-si b families repre- sent1ng f1ve geograph1c reg1ons: (l) Tyler Co. Texas, (2... and which components contr 1 bute most to it (e. g. , reg1ons, stands, or individual trees). This suggests where, by what method, and how intens1vely to select for improvement of the desired trai ts, assuming suffic1 ent vari ation is present to warrant...

Nebgen, Russell James

1980-01-01T23:59:59.000Z

330

INVESTIGATION Yeast Growth Plasticity Is Regulated by  

E-Print Network [OSTI]

, Stanford University, Palo Alto, California 94304, BioMaPS Institute for Quantitative Biology, Rutgers to enhance or reduce the plasticity in a population. Several studies have identified roles of single genes

Sinha, Himanshu

331

A Geometric Theory of Growth Mechanics  

E-Print Network [OSTI]

In this paper we formulate a geometric theory of the mechanics of growing solids. Bulk growth is modeled by a material manifold with an evolving metric. Time dependence of metric represents the evolution of the stress-free (natural) configuration of the body in response to changes in mass density and "shape". We show that time dependency of material metric will affect the energy balance and the entropy production inequality; both the energy balance and the entropy production inequality have to be modified. We then obtain the governing equations covariantly by postulating invariance of energy balance under time-dependent spatial diffeomorphisms. We use the principle of maximum entropy production in deriving an evolution equation for the material metric. In the case of isotropic growth, we find those growth distributions that do not result in residual stresses. We then look at Lagrangian field theory of growing elastic solids. We will use the Lagrange-d'Alembert's principle with Rayleigh's dissipation functions to derive all the governing equations. We make an explicit connection between our geometric theory and the conventional multiplicative decomposition of deformation gradient $\\mathbf{F}=\\mathbf{F}_e\\mathbf{F}_g$ into growth and elastic parts. We linearize the nonlinear theory and derive a linearized theory of growth mechanics. Finally, we obtain the stress-free growth distributions in the linearized theory.

Arash Yavari

2009-11-24T23:59:59.000Z

332

The Birth of a Galaxy: Primoridal Metal Enrichment and Population II Stellar Populations  

E-Print Network [OSTI]

Population III stars first form in dark matter halos with masses around 10^6 Msun. By definition, they are metal-free, and their protostellar collapse is driven by molecular hydrogen cooling in the gas-phase, leading to a massive characteristic mass ~100 Msun and suppressed fragmentation. Population II stars with lower characteristic masses form when the star-forming gas reaches a critical metallicity of 10^{-6} - 10^{-3.5} Zsun, depending on whether dust cooling is important. We present adaptive mesh refinement radiation hydrodynamics simulations that follows the transition from Population III to II star formation. We model stellar radiative feedback with adaptive ray tracing. A top-heavy initial mass function for the Population III stars is considered, resulting in a plausible distribution of pair-instability supernovae and associated metal enrichment. We find that the gas fraction recovers from 5 percent to nearly the cosmic fraction in halos with merger histories rich in halos above 10^7 Msun. A single pa...

Wise, John H; Norman, Michael L; Abel, Tom

2010-01-01T23:59:59.000Z

333

Impact of prescribed burning on Gulf Coast tick populations  

E-Print Network [OSTI]

included upland prairies consisting of lush and moderately tall little bluestem (~ski* h 1 ~i (Mt h . ] M h . ~f f. t. M bb bkbhbl kby(~sh(b(1t MhdRbp h btt t fth 1 h b; (Rh s ~)li L. ) h bft t fth d t1yd d t y; p ( (~oi y ~ii 1 L. ) habitat which...

Oldham, Thomas Walter

1983-01-01T23:59:59.000Z

334

Engineering the initial state in broadband population inversion  

E-Print Network [OSTI]

Quantum systems with sublevel structures prevent full population inversion from one manifold of sublevels to the other using strong ultrafast resonant pulses. In this work we explain the mechanism by which this population transfer is blocked. We then develop a novel concept of geometric control, assuming full or partial coherent manipulation within the manifolds and show that by preparing specific coherent superpositions in the initial manifold, full population inversion or full population blockade, {\\it i.e} laser-induced transparency, can be achieved. In particular, by parallel population transfer we show how population inversion between the manifolds can be obtained with minimal pulse area. As the number of sublevels increases, population inversion can overcome the pulse area theorem at the expense of full control over the initial manifold of sublevels.

Bo Y. Chang; Sheokmin Shin; Ignacio R. Sola

2015-03-03T23:59:59.000Z

335

On the properties of massive Population III stars and metal-free stellar populations  

E-Print Network [OSTI]

We present realistic models for massive Population III stars and stellar populations based on non-LTE model atmospheres, recent stellar evolution tracks and up-to-date evolutionary synthesis models, to study their spectral properties, including their dependence on age, star formation history, and IMF. (..) The main results regarding integrated stellar populations are: * For young bursts and the case of a constant SFR, nebular continuous emission - neglected in previous studies - dominates the spectrum redward of Lyman-alpha (...). Therefore predicted emission line equivalent widths are considerably smaller than found in earlier studies, whereas the detection of the continuum is eased. Nebular line and continuous emission strongly affect the broad band photometric properties of Pop III objects. * Due to stellar evolution, the hardness of the ionising spectrum decreases rapidly, leading to the disappearance of the characteristic HeII 1640 recombination lines after ~ 3 Myr in instantaneous bursts. * The relative efficiency of ionising photon energy to heavy element rest mass production, eta, of metal-poor and metal-free populations is increased by factors of ~ 4 to 18 with respect to solar metallicity and for ``standard'' IMFs. * The lowest values of eta ~ 1.6 - 2.2 % are obtained for IMFs exclusively populated with high mass stars (M_low >~ 50 Msun). If correct, the yields dominated by pair creation SNae then predict large overabundances of O/C and Si/C compared to solar abundance ratios. Detailed results are given in tabular form and as fit formulae for implementation in other calculations. (abridged abstract)

Daniel Schaerer

2001-10-31T23:59:59.000Z

336

Apparatus for silicon web growth of higher output and improved growth stability  

DOE Patents [OSTI]

This disclosure describes an apparatus to improve the web growth attainable from prior web growth configurations. This apparatus modifies the heat loss at the growth interface in a manner that minimizes thickness variations across the web, especially regions of the web adjacent to the two bounding dendrites. In the unmodified configuration, thinned regions of web, adjacent to the dendrites, were found to be the origin of crystal degradation which ultimately led to termination of the web growth. According to the present invention, thinning adjacent to the dendrites is reduced and the incidence of crystal degradation is similarly reduced.

Duncan, Charles S. (Penn Hills, PA); Piotrowski, Paul A. (Monroeville, PA)

1989-01-01T23:59:59.000Z

337

Journal of Theoretical Biology 227 (2004) 397401 Evolutionary stability for large populations  

E-Print Network [OSTI]

population ESS, as distinct from Maynard Smith's infinite population ESS and Schaffer's finite population ESS. Building on Schaffer's finite population model, we define the large population ESS as a strategy which. The large population ESS is not equivalent to the infinite population ESS: we give examples of games

Gordon, Geoffrey J.

338

Compensatory mechanisms in fish populations: An EPRI research plan: Final report  

SciTech Connect (OSTI)

This is a plan for Industry-sponsored research on compensation in fish populations impacted at steam-electric or hydro-power facilities. Compensation encompasses processes by which fishes self-regulate rates of reproduction and mortality as means of offsetting those impacts. EPRI's goal is the synthesis of a quantitative model sufficient to predict the direction and relative magnitude of fish population response to anticipated site specific impacts. Two parallel and interactive research efforts are proposed to meet this goal, a Key Species Program and a Fellowship Program. Both are empirical programs, the first emphasizing the generation of new data sets tailored to the needs of the modeling framework and the second testing and expanding the concepts on which the models are based. The Key Species Program is a series of studies of selected species chosen to represent the range of life history strategies encompassed by the modeling framework. The primary research activity is measurement of key life table parameters (reproduction, growth and mortality) across the geographic range of the test species and under circumstances in which the size or structure of the target populations can be manipulated. The Fellowship Program is a basic research effort to be conducted by senior graduate students working in the area of population dynamics. The Program relies on an oversight group of senior academic and industry scientists to set topical goals for research, oversee the selection and implementation of projects and assist with the consolidation and integration of outputs into the larger predictive framework provided by the Key Species studies.

Otto, R.G.

1987-09-01T23:59:59.000Z

339

Old stellar populations in distant radio galaxies  

E-Print Network [OSTI]

I describe the current status of our attempts to determine the age of the oldest known stellar populations at high redshift, in the red mJy radio galaxies 53W091 ($z = 1.55$) and 53W069 ($z = 1.43$). During the past year the original conclusion of Dunlop et al. (1996) - that 53W091 is $>3$ Gyr old - has been questioned from two, basically orthogonal directions. First, reports that the near-infrared light from 53W091 is highly polarized have cast some doubt on whether its red colour is genuinely due to an old population of stars. Second, assuming that all the light is indeed due to stars, it has been claimed that 53W091 is in fact only 1-2 Gyr old. Here I present a preliminary analysis of new infrared polarimetric observations of 53W091 which show that the first of these criticisms can be rejected with very high confidence. I then explore why different modellers have derived different ages for 53W091, and present new model fits to the spectrum of 53W069 which demonstrate that different spectral synthesis codes are certainly in good agreement that this galaxy is 3-4 Gyr old. Finally I present a preliminary analysis of the morphologies and scale-lengths of 53W091 and 53W069 as derived from new I-band WFPC2 HST images, and compare the results with those for 3CR galaxies at comparable redshifts. I conclude that the scalelengths and luminosities of radio galaxies at $z \\simeq 1.5$ appear to scale together as would be predicted from the Kormendy relation for low-redshift elliptical galaxies.

James Dunlop

1998-01-13T23:59:59.000Z

340

Photosynthetic pigment concentrations, gas exchange and vegetative growth for selected monocots and dicots treated with two contrasting coal fly ashes  

SciTech Connect (OSTI)

There is uncertainty as to the rates of coal fly ash needed for optimum physiological processes and growth. In the current study we tested the hyothesis that photosynthetic pigments concentrations and CO{sub 2} assimilation (A) are more sensitive than dry weights in plants grown on media amended with coal fly ash. We applied the Terrestrial Plant Growth Test (Guideline 208) protocols of the Organization for Economic Cooperation and Development (OECD) to monocots (barley (Hordeum vulgare) and ryegrass (Secale cereale)) and dicots (canola (Brasica napus), radish (Raphanus sativus), field peas (Pisum sativum), and lucerne (Medicago sativa)) on media amended with fly ashes derived from semi-bituminous (gray ash) or lignite (red ash) coals at rates of 0, 2.5, 5.0, 10, or 20 Mg ha(-1). The red ash had higher elemental concentrations and salinity than the gray ash. Fly ash addition had no significant effect on germination by any of the six species. At moderate rates ({<=}10 Mg ha{sup -1}) both ashes increased (P < 0.05) growth rates and concentrations of chlorophylls a and b, but reduced carotenoid concentrations. Addition of either ash increased A in radish and transpiration in barley. Growth rates and final dry weights were reduced for all of the six test species when addition rates exceeded 10 Mg ha{sup -1} for gray ash and 5 Mg ha{sup -1} for red ash. We concluded that plant dry weights, rather than pigment concentrations and/or instantaneous rates of photosynthesis, are more consistent for assessing subsequent growth in plants supplied with fly ash.

Yunusa, I.A.M.; Burchett, M.D.; Manoharan, V.; DeSilva, D.L.; Eamus, D.; Skilbeck, C.G. [University of Technology Sydney, Sydney, NSW (Australia). Dept. of Environmental Science

2009-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Journal of Crystal Growth 271 (2004) 128133 Growth of strontium barium niobate  

E-Print Network [OSTI]

Journal of Crystal Growth 271 (2004) 128­133 Growth of strontium barium niobate: the liquidus. Roth Available online 11 September 2004 Abstract The liquidus­solidus phase diagram of strontium barium, and dielectric properties, strontium barium niobate, SrxBa1?xNb2O6--hen- ceforth denoted as SBN, is one

Osnabrück, Universität

342

Arrowhead Center: Coal Production and Regional Economic Growth Report Title: Coal Production and Regional Economic Growth  

E-Print Network [OSTI]

Arrowhead Center: Coal Production and Regional Economic Growth Report Title: Coal Production@nmsu.edu #12;Arrowhead Center: Coal Production and Regional Economic Growth i Disclaimer This report States Government or any agency thereof. #12;Arrowhead Center: Coal Production and Regional Economic

Johnson, Eric E.

343

Fractal-Mound Growth of Pentacene Thin Films  

E-Print Network [OSTI]

The growth mechanism of pentacene film formation on SiO2 substrate was investigated with a combination of atomic force microscopy measurements and numerical modeling. In addition to the diffusion-limited aggregation (DLA) that has already been shown to govern the growth of the ordered pentacene thin films, it is shown here for the first time that the Schwoebel barrier effect steps in and disrupts the desired epitaxial growth for the subsequent layers, leading to mound growth. The terraces of the growing mounds have a fractal dimension of 1.6, indicating a lateral DLA shape. This novel growth morphology thus combines horizontal DLA-like growth with vertical mound growth.

Serkan Zorba; Yonathan Shapir; Yongli Gao

2006-10-19T23:59:59.000Z

344

A Geometric Theory of Growth Mechanics  

E-Print Network [OSTI]

In this paper we formulate a geometric theory of the mechanics of growing solids. Bulk growth is modeled by a material manifold with an evolving metric. Time dependence of metric represents the evolution of the stress-free (natural) configuration of the body in response to changes in mass density and "shape". We show that time dependency of material metric will affect the energy balance and the entropy production inequality; both the energy balance and the entropy production inequality have to be modified. We then obtain the governing equations covariantly by postulating invariance of energy balance under time-dependent spatial diffeomorphisms. We use the principle of maximum entropy production in deriving an evolution equation for the material metric. In the case of isotropic growth, we find those growth distributions that do not result in residual stresses. We then look at Lagrangian field theory of growing elastic solids. We will use the Lagrange-d'Alembert's principle with Rayleigh's dissipation functions...

Yavari, Arash

2009-01-01T23:59:59.000Z

345

HTR-PROTEUS Pebble Bed Experimental Program Cores 1, 1A, 2, and 3: Hexagonal Close Packing with a 1:2 Moderator-to-Fuel Pebble Ratio  

SciTech Connect (OSTI)

In its deployment as a pebble bed reactor (PBR) critical facility from 1992 to 1996, the PROTEUS facility was designated as HTR-PROTEUS. This experimental program was performed as part of an International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) on the Validation of Safety Related Physics Calculations for Low Enriched HTGRs. Within this project, critical experiments were conducted for graphite moderated LEU systems to determine core reactivity, flux and power profiles, reaction-rate ratios, the worth of control rods, both in-core and reflector based, the worth of burnable poisons, kinetic parameters, and the effects of moisture ingress on these parameters. Four benchmark experiments were evaluated in this report: Cores 1, 1A, 2, and 3. These core configurations represent the hexagonal close packing (HCP) configurations of the HTR-PROTEUS experiment with a moderator-to-fuel pebble ratio of 1:2. Core 1 represents the only configuration utilizing ZEBRA control rods. Cores 1A, 2, and 3 use withdrawable, hollow, stainless steel control rods. Cores 1 and 1A are similar except for the use of different control rods; Core 1A also has one less layer of pebbles (21 layers instead of 22). Core 2 retains the first 16 layers of pebbles from Cores 1 and 1A and has 16 layers of moderator pebbles stacked above the fueled layers. Core 3 retains the first 17 layers of pebbles but has polyethylene rods inserted between pebbles to simulate water ingress. The additional partial pebble layer (layer 18) for Core 3 was not included as it was used for core operations and not the reported critical configuration. Cores 1, 1A, 2, and 3 were determined to be acceptable benchmark experiments.

John D. Bess; Barbara H. Dolphin; James W. Sterbentz; Luka Snoj; Igor Lengar; Oliver Kberl

2012-03-01T23:59:59.000Z

346

HTR-PROTEUS Pebble Bed Experimental Program Cores 1, 1A, 2, and 3: Hexagonal Close Packing with a 1:2 Moderator-to-Fuel Pebble Ratio  

SciTech Connect (OSTI)

In its deployment as a pebble bed reactor (PBR) critical facility from 1992 to 1996, the PROTEUS facility was designated as HTR-PROTEUS. This experimental program was performed as part of an International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) on the Validation of Safety Related Physics Calculations for Low Enriched HTGRs. Within this project, critical experiments were conducted for graphite moderated LEU systems to determine core reactivity, flux and power profiles, reaction-rate ratios, the worth of control rods, both in-core and reflector based, the worth of burnable poisons, kinetic parameters, and the effects of moisture ingress on these parameters. Four benchmark experiments were evaluated in this report: Cores 1, 1A, 2, and 3. These core configurations represent the hexagonal close packing (HCP) configurations of the HTR-PROTEUS experiment with a moderator-to-fuel pebble ratio of 1:2. Core 1 represents the only configuration utilizing ZEBRA control rods. Cores 1A, 2, and 3 use withdrawable, hollow, stainless steel control rods. Cores 1 and 1A are similar except for the use of different control rods; Core 1A also has one less layer of pebbles (21 layers instead of 22). Core 2 retains the first 16 layers of pebbles from Cores 1 and 1A and has 16 layers of moderator pebbles stacked above the fueled layers. Core 3 retains the first 17 layers of pebbles but has polyethylene rods inserted between pebbles to simulate water ingress. The additional partial pebble layer (layer 18) for Core 3 was not included as it was used for core operations and not the reported critical configuration. Cores 1, 1A, 2, and 3 were determined to be acceptable benchmark experiments.

John D. Bess; Barbara H. Dolphin; James W. Sterbentz; Luka Snoj; Igor Lengar; Oliver Kberl

2013-03-01T23:59:59.000Z

347

The Formation of Population III Binaries  

E-Print Network [OSTI]

We explore the possibility for the formation of Population III binaries. The collapse of a rotating cylinder is simulated with a three-dimensional, high-resolution nested grid, assuming the thermal history of primordial gas. The simulations are done with dimensionless units, and the results are applicable to low-mass as well as massive systems by scaling with the initial density. We find that if the initial angular momentum is as small as $\\beta \\approx 0.1$, where $\\beta$ is the ratio of centrifugal force to pressure force, then the runaway collapse of the cloud stops to form a rotationally-supported disk. After the accretion of the envelope, the disk undergoes a ring instability, eventually fragmenting into a binary. If the initial angular momentum is relatively large, a bar-type instability arises, resulting in the collapse into a single star through rapid angular momentum transfer. The present results show that a significant fraction of Pop III stars are expected to form in binary systems, even if they ar...

Saigo, K; Umemura, M; Saigo, Kazuya; Matsumoto, Tomoaki; Umemura, Masayuki

2004-01-01T23:59:59.000Z

348

Magnetic Fields in Population III Star Formation  

SciTech Connect (OSTI)

We study the buildup of magnetic fields during the formation of Population III star-forming regions, by conducting cosmological simulations from realistic initial conditions and varying the Jeans resolution. To investigate this in detail, we start simulations from identical initial conditions, mandating 16, 32 and 64 zones per Jeans length, and studied the variation in their magnetic field amplification. We find that, while compression results in some amplification, turbulent velocity fluctuations driven by the collapse can further amplify an initially weak seed field via dynamo action, provided there is sufficient numerical resolution to capture vortical motions (we find this requirement to be 64 zones per Jeans length, slightly larger than, but consistent with previous work run with more idealized collapse scenarios). We explore saturation of amplification of the magnetic field, which could potentially become dynamically important in subsequent, fully-resolved calculations. We have also identified a relatively surprising phenomena that is purely hydrodynamic: the higher-resolved simulations possess substantially different characteristics, including higher infall-velocity, increased temperatures inside 1000 AU, and decreased molecular hydrogen content in the innermost region. Furthermore, we find that disk formation is suppressed in higher-resolution calculations, at least at the times that we can follow the calculation. We discuss the effect this may have on the buildup of disks over the accretion history of the first clump to form as well as the potential for gravitational instabilities to develop and induce fragmentation.

Turk, Matthew J.; Oishi, Jeffrey S.; Abel, Tom; Bryan, Greg

2012-02-22T23:59:59.000Z

349

The influence of coyotes on an urban Canada goose population in the Chicago metropolitan area  

SciTech Connect (OSTI)

Canada geese (Branta canadensis) have become common in many urban areas, often creating nuisance problems for human residents. The presence of urban geese has raised concerns about the spread of disease, increased erosion, excessive noise, eutrophication of waterways, and general nuisance problems. Goose populations have grown due to an increase in urbanization resulting in an abundance of high quality food (urban grass) and suitable nesting sites, as well as a decrease in some predators. I monitored nest predation in the Chicago suburbs during the 2004 and 2005 nesting seasons using 3 nest monitoring techniques to identify predators: video cameras, plasticine eggs, and sign from nest using a classification tree analysis. Of 58 nests monitored in 2004 and 286 in 2005, only raccoons (Procyon lotor) and coyotes (Canis latrans) were identified as nest predators. Raccoons were responsible for 22-25% of depredated nests, but were rarely capable of depredating nests that were actively defended by a goose. Coyotes were responsible for 75-78% of all Canada goose nest depredation and were documented killing one adult goose and feeding on several others. The coyote is a top-level predator that had increased in many metropolitan areas in recent years. To determine if coyotes were actively hunting geese or eggs during the nesting season, I analyzed coyote habitat selection between nesting and pre-nesting or post-nesting seasons. Coyote home ranges (95% Minimum Convex Polygon) were calculated for 19 coyotes to examine third order habitat selection related to goose nest abundance. A 100 m buffer (buffer habitat) was created and centered on each waterway edge and contained 90% of all nests. Coyotes showed selection for habitats during all seasons. Buffer habitat was the top ranked habitat in both pre-nesting and nesting seasons, but dropped to third ranked in post-nesting season. Habitat selection across seasons was compared using a repeated measures MANOVA. Habitat selection between pre-nesting and nesting seasons (P=0.72) were similar, while between post-nesting and nesting seasons there was a nearly significant difference (P=0.07). The insignificant change in habitat use across seasons suggests that coyotes did not switch habitat use to take advantage of goose nests. Alternatively, the change in ranking of buffer habitat across seasons suggests that coyotes may have switched habitat use to take advantage of goose nests. The results are not clear as large individual variation between coyotes due to differences in habitat availability, and social status interfere with the results of the analysis. Even though I failed to find strong support for coyotes actively hunting goose nests, they nevertheless were the primary nest predator in the area and may influence Canada goose populations. To determine the potential influence of coyotes on the Canada goose population, I created a Canada goose matrix population model that included variables such as coyote predation on adults and nests as well as coyote influence on nest desertion. Using the base population model I calculated the Canada goose population to be increasing with {lambda} = 1.055. The removal of all coyote influence on the goose population would allow {lambda} to increase to 1.214. Nest predation was the most important factor related to coyotes: the removal of coyote nest predation from the model resulted in a population growth rate {lambda} = 1.157. Modeling results suggest coyotes are serving as a limiting factor for the Canada goose population within the Chicago metropolitan area.

Brown, Justin L.; /Ohio State U.

2007-01-01T23:59:59.000Z

350

HTR-PROTEUS PEBBLE BED EXPERIMENTAL PROGRAM CORE 4: RANDOM PACKING WITH A 1:1 MODERATOR-TO-FUEL PEBBLE RATIO  

SciTech Connect (OSTI)

In its deployment as a pebble bed reactor (PBR) critical facility from 1992 to 1996, the PROTEUS facility was designated as HTR-PROTEUS. This experimental program was performed as part of an International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) on the Validation of Safety Related Physics Calculations for Low Enriched HTGRs. Within this project, critical experiments were conducted for graphite moderated LEU systems to determine core reactivity, flux and power profiles, reaction-rate ratios, the worth of control rods, both in-core and reflector based, the worth of burnable poisons, kinetic parameters, and the effects of moisture ingress on these parameters. One benchmark experiment was evaluated in this report: Core 4. Core 4 represents the only configuration with random pebble packing in the HTR-PROTEUS series of experiments, and has a moderator-to-fuel pebble ratio of 1:1. Three random configurations were performed. The initial configuration, Core 4.1, was rejected because the method for pebble loading, separate delivery tubes for the moderator and fuel pebbles, may not have been completely random; this core loading was rejected by the experimenters. Cores 4.2 and 4.3 were loaded using a single delivery tube, eliminating the possibility for systematic ordering effects. The second and third cores differed slightly in the quantity of pebbles loaded (40 each of moderator and fuel pebbles), stacked height of the pebbles in the core cavity (0.02 m), withdrawn distance of the stainless steel control rods (20 mm), and withdrawn distance of the autorod (30 mm). The 34 coolant channels in the upper axial reflector and the 33 coolant channels in the lower axial reflector were open. Additionally, the axial graphite fillers used in all other HTR-PROTEUS configurations to create a 12-sided core cavity were not used in the randomly packed cores. Instead, graphite fillers were placed on the cavity floor, creating a funnel-like base, to discourage ordering effects during pebble loading. Core 4 was determined to be acceptable benchmark experiment.

John D. Bess; Leland M. Montierth

2014-03-01T23:59:59.000Z

351

HTR-PROTEUS PEBBLE BED EXPERIMENTAL PROGRAM CORE 4: RANDOM PACKING WITH A 1:1 MODERATOR-TO-FUEL PEBBLE RATIO  

SciTech Connect (OSTI)

In its deployment as a pebble bed reactor (PBR) critical facility from 1992 to 1996, the PROTEUS facility was designated as HTR-PROTEUS. This experimental program was performed as part of an International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) on the Validation of Safety Related Physics Calculations for Low Enriched HTGRs. Within this project, critical experiments were conducted for graphite moderated LEU systems to determine core reactivity, flux and power profiles, reaction-rate ratios, the worth of control rods, both in-core and reflector based, the worth of burnable poisons, kinetic parameters, and the effects of moisture ingress on these parameters. One benchmark experiment was evaluated in this report: Core 4. Core 4 represents the only configuration with random pebble packing in the HTR-PROTEUS series of experiments, and has a moderator-to-fuel pebble ratio of 1:1. Three random configurations were performed. The initial configuration, Core 4.1, was rejected because the method for pebble loading, separate delivery tubes for the moderator and fuel pebbles, may not have been completely random; this core loading was rejected by the experimenters. Cores 4.2 and 4.3 were loaded using a single delivery tube, eliminating the possibility for systematic ordering effects. The second and third cores differed slightly in the quantity of pebbles loaded (40 each of moderator and fuel pebbles), stacked height of the pebbles in the core cavity (0.02 m), withdrawn distance of the stainless steel control rods (20 mm), and withdrawn distance of the autorod (30 mm). The 34 coolant channels in the upper axial reflector and the 33 coolant channels in the lower axial reflector were open. Additionally, the axial graphite fillers used in all other HTR-PROTEUS configurations to create a 12-sided core cavity were not used in the randomly packed cores. Instead, graphite fillers were placed on the cavity floor, creating a funnel-like base, to discourage ordering effects during pebble loading. Core 4 was determined to be acceptable benchmark experiment.

John D. Bess; Leland M. Montierth

2013-03-01T23:59:59.000Z

352

Fuel Effects on Combustion and Emissions of a Direct-Inection Diesel Engine Operating at Moderate to High Engine Speed and Load  

SciTech Connect (OSTI)

It is advantageous to increase the specific power output of diesel engines and to operate them at higher load for a greater portion of a driving cycle to achieve better thermal efficiency and thus reduce vehicle fuel consumption. Such operation is limited by excessive smoke formation at retarded injection timing and high rates of cylinder pressure rise at more advanced timing. Given this window of operation, it is desired to understand the influence of fuel properties such that optimum combustion performance and emissions can be retained over the range of fuels commonly available in the marketplace. It has been shown in previous studies that varying cetane number (CN) of diesel fuel has little effect on ignition delay at high engine load due to the domination of high cylinder temperature on ignition kinetics. The work here experimentally confirms that finding but also shows that emissions and combustion performance vary according to fuel reactivity. Data are examined from a direct-injection single cylinder research engine for eight common diesel fuels including soy-based biodiesel blends at two high load operating points with no exhaust gas recirculation (EGR) and at a moderate load with four levels of EGR. It is shown in the work that at high engine load where combustion is controlled by mixing processes, CN and other fuel properties have little effect on engine performance, although lower CN fuels produce a small increase in noise, smoke and CO emissions. Biodiesel blends increase NOX emissions and decreases CO and smoke emissions at high load, but otherwise have little effect on performance. At moderate load, higher CN fuels are more tolerant to EGR due to their better chemical reactivity at retarded injection timing, but all fuels produce comparable thermal efficiency at advanced combustion phasing regardless of EGR. In contrast to the high load conditions, there was no increase in NOX emissions for biodiesel at the moderate load condition. It is concluded that although higher CN does not significantly alter ignition delay at moderate to high loads it has a dominant influence on the acceptable injection timing range. Apart from CN effects, fuel oxygen content plays an independent role in reducing some emissions. It is therefore recommended that compensation for fuel ignitability and oxygen content be included in combustion control strategies to optimize emissions and performance of future diesel engines.

Szybist, James P [ORNL; Szymkowicz, Patrick G. [General Motors Corporation; Northrop, William F [General Motors Corporation

2012-01-01T23:59:59.000Z

353

Monitoring hydraulic fracture growth: Laboratory experiments  

SciTech Connect (OSTI)

The authors carry out small-scale hydraulic fracture experiments to investigate the physics of hydraulic fracturing. The laboratory experiments are combined with time-lapse ultrasonic measurements with active sources using both compressional and shear-wave transducers. For the time-lapse measurements they focus on ultrasonic measurement changes during fracture growth. As a consequence they can detect the hydraulic fracture and characterize its shape and geometry during growth. Hence, this paper deals with fracture characterization using time-lapse acoustic data. Hydraulic fracturing is used in the oil and gas industry to stimulate reservoir production.

Groenenboom, J.; Dam, D.B. van

2000-04-01T23:59:59.000Z

354

Direct growth of graphene on Si(111)  

SciTech Connect (OSTI)

Due to the need of integrated circuit in the current silicon technology, the formation of graphene on Si wafer is highly desirable, but is still a challenge for the scientific community. In this context, we report the direct growth of graphene on Si(111) wafer under appropriate conditions using an electron beam evaporator. The structural quality of the material is investigated in detail by reflection high energy electron diffraction, Auger electron spectroscopy, X-ray photoemission spectroscopy, Raman spectroscopy, high resolution scanning electron microscopy, atomic force microscopy, and scanning tunneling microscopy. Our experimental results confirm that the quality of graphene is strongly dependent on the growth time during carbon atoms deposition.

Thanh Trung, Pham, E-mail: phamtha@fundp.ac.be; Joucken, Frdric; Colomer, Jean-Franois; Robert, Sporken [Research Center in Physics of Matter and Radiation (PMR), University of Namur (FUNDP), 61 Rue de Bruxelles, 5000 Namur (Belgium); Campos-Delgado, Jessica; Raskin, Jean-Pierre [Electrical Engineering (ELEN), Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Universit catholique de Louvain UCL, 3 place du Levant, Louvain-la-Neuve (Belgium); Hackens, Benot; Santos, Cristiane N. [Nanoscopic physics (NAPS), Institute of Condensed Matter and Nanosciences (IMCN), Universit catholique de Louvain UCL, 2 chemin du Cyclotron, Louvain-la-Neuve (Belgium)

2014-06-14T23:59:59.000Z

355

Beyond Patient Health Escalating populations, expanding urban environments, poverty,  

E-Print Network [OSTI]

resistance, ozone depletion, asthma and heavy metal toxicity · The program also supports student and facultyBeyond Patient Health Escalating populations, expanding urban environments, poverty, pollution

Denham, Graham

356

ORISE: Worker Health Studies - Testing Beryllium Vendor Populations  

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

Oak Ridge Institute for Science Education Beryllium Testing Vendor Populations When former employees at 25 closed U.S. Department of Energy (DOE) beryllium vendor companies needed...

357

LAB 1: POPULATION Discussion:. This project compares three ...  

E-Print Network [OSTI]

Your first goal will be to graph the data in the table corresponding ... Data in MATLAB is stored in matrices. ... Graph the population predicted by formulas (1).

1910-00-12T23:59:59.000Z

358

Egypt's population policies and family planning program: a critical examination.  

E-Print Network [OSTI]

??Egypt's national family planning program, in existence since 1965, has been fairly successful in increasing the use of family planning methods and lowering the population (more)

Carr, Aline B.

2012-01-01T23:59:59.000Z

359

apis mellifera populations: Topics by E-print Network  

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

The effect of Apis mellifera carnica Polm worker bee source for populating mating of Croatia (Received 9 December 1991; accepted 18 March 1992) Summary The influence of worker...

360

algorithm population sizing: Topics by E-print Network  

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

CiteSeer Summary: Deciding the appropriate population size and number of islands for distributed island-model genetic algorithms is often critical to the algorithms success. This...

Note: This page contains sample records for the topic "moderate population growth" 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

adult general population: Topics by E-print Network  

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

Texas (P. c. stanleyana Oli, Madan K. 30 RESEARCH ARTICLE Contemporary epidemiology of gout in the UK general population CiteSeer Summary: Introduction: The objective of this...

362

Optimization Online - Varying the Population Size of Artificial ...  

E-Print Network [OSTI]

Mar 2, 2005 ... Varying the Population Size of Artificial Foraging Swarms on Time Varying ... Abstract: Swarm Intelligence (SI) is the property of a system...

Carlos Fernandes

2005-03-02T23:59:59.000Z

363

asthmatic population sample: Topics by E-print Network  

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

sample allocation and effort in detecting population differentiation Dordrecht 2014 Abstract One of the most pressing issues in spatial genetics concerns sampling....

364

admixed population lived: Topics by E-print Network  

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

population in urban United Nations; Nations Unies 1999-01-01 67 Developing solutions for sustainable living-the Urban Living Laboratory: The world's largest 'living laboratory'...

365

E-Print Network 3.0 - accelerates population increase Sample...  

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

particular scaled value population, is proportional... ), equation (25). Radiative accelerations calculated following equa- assuming b l,i LTE populations......

366

Growth Versus Government Management Improvement During  

E-Print Network [OSTI]

, we find that the growth rate of GDP per capita, g, decreases with p, and increases with DGCI. Further 33% of govern- ment employees has increased its GDP per capita by approximately 4% (corrected and Thermal Energy Science, School of Physical Science and Engineering, Tongji University, 200092, Shanghai

Podobnik, Boris

367

Foreign Fishery Developments Australia Reports Growth in  

E-Print Network [OSTI]

." Later studies have also shown both per capita fish and seafood consump- tion and fish prices-76, the last year of the survey. Apparent consumption per person rose another 6 percent in 1976-77 and trendsForeign Fishery Developments Australia Reports Growth in Fish Consumption and Prices Australians

368

Environmental Problems Facing Lake Tahoe Algal Growth  

E-Print Network [OSTI]

fertilizers, which support the growth of free-floating and attached algae. Eutrophication Eutrophication refers to the effects of an overabundance of nutrients. Eutrophication occurs naturally as part. This process normally occurs over millions of years; however, we are seeing the effects of eutrophication

Schladow, S. Geoffrey

369

Growth Of Oriented Crystals At Polymerized Membranes  

DOE Patents [OSTI]

The present invention relates to methods and compositions for the growth and alignment of crystals at biopolymeric films. The methods and compositions of the present invention provide means to generate a variety of dense crystalline ceramic films, with totally aligned crystals, at low temperatures and pressures, suitable for use with polymer and plastic substrates.

Charych, Deborah H. (Albany, CA), Berman, Amir (Ben-Shiva, IL)

2000-01-25T23:59:59.000Z

370

The Henley Accelerator supports ambitious high growth  

E-Print Network [OSTI]

of a business in the 5-6% of SMEs that are on a high growth trajectory. Typically these businesses will have and Technology Centre, University of Reading, Earley Gate, Reading, Berkshire RG6 6BZ Tel: 0118 935 7115 Email

Reading, University of

371

Emittance growth from electron beam modulation  

SciTech Connect (OSTI)

In linac ring colliders like MeRHIC and eRHIC a modulation of the electron bunch can lead to a modulation of the beam beam tune shift and steering errors. These modulations can lead to emittance growth. This note presents simple formulas to estimate these effects which generalize some previous results.

Blaskiewicz, M.

2009-12-01T23:59:59.000Z

372

MESOSCALE AVERAGING OF NUCLEATION AND GROWTH MODELS  

E-Print Network [OSTI]

(cf. e.g. [49]), semiconductor crystal growth (cf. [37]), biomineralization (cf. e.g. [48]), DNA (cf. e.g. [2, 4, 10, 26, 28, 32]). The aim of this paper is to bridge between these two type of models

Burger, Martin

373

Nanoscale Growth Twins in Sputtered Copper Films  

E-Print Network [OSTI]

.............................................................. 7 I.1.3. Chemical vapor deposition (CVD) .................................... 8 I.2. Fabrication of copper thin films .................................................... 12... to the exposure of the film growth surface to the solution, impurities may be introduced. I.1.3. Chemical vapor deposition (CVD) CVD is a chemical process used to produce high-purity, high-performance thin films and often used in the semiconductor industry...

Anderoglu, Osman

2011-08-08T23:59:59.000Z

374

WASC EDUCATIONAL EFFECTIVENESS REVIEW GRADUATE GROWTH  

E-Print Network [OSTI]

graduate education at UC Santa Cruz: · The development of new graduate programs is linked to state budget existing graduate programs (Environmental Toxicology, Ocean Sciences, and Education); three others haveWASC EDUCATIONAL EFFECTIVENESS REVIEW GRADUATE GROWTH "California's future strength depends

California at Santa Cruz, University of

375

Growth strategies of ectothermic animals in  

E-Print Network [OSTI]

analysis is also a tool for inves- tigating hypotheses of evolutionary causes and of adaptations in general such as growth, sexual maturation and reproduction as the result of strategic decisions over an organism's life it reduces the risk of being killed before reproduction and entails a short generation time, while a large

Gotthard, Karl

376

Negative void reactivity in a large liquid-metal fast breeder reactor with hydrogenous moderator (ZrH[sub 1. 7]) layers  

SciTech Connect (OSTI)

Placing a thin hydrogenous moderator (ZrH[sub 1.7]) layer between the seed and the blanket is very effective in reducing the sodium void reactivity of a liquid-metal fast breeder reactor (LMFBR). The void reactivity reduction is attributed to the decrease in neutron production and increase in neutron absorption in the blanket at voiding due to the slowing down of fast neutrons in the layer. This dominates the whole core neutron balance. The fixed hydrogenous layer concept is much more effective than the conventional uniform introduction of such moderator in a core. Furthermore, it does not seriously deteriorate the breeding capability. For realizing the negative sodium void reactivity in a large-sized core, the seeds should be divided by blankets with the layers. The conceptual design of a nonflat LMFBR core is presented for demonstrating the effectiveness of the layer. Negative void reactivity is realized in a radially heterogeneous core of 1,000-MW(electric) class output. The active core is 2.9 m high. It is much taller than the conventional LMFBR core, which is [approximately]1 m high. A wide pitch-to-fuel diameter ratio was chosen so as not to increase the pressure drop in the core. The compound system doubling time is 12.5 yr.

Oka, Yoshiaki; Jevremovic, T.; Koshizuka, Seiichi (Univ. of Tokyo, Ibaraki (Japan). Nuclear Engineering Research Lab.)

1994-07-01T23:59:59.000Z

377

September 15, 2000 Applications of Population Approaches in Toxicology  

E-Print Network [OSTI]

or animal studied and extrapolating their results to larger and different populations requires careful in animal and human populations. It cannot be reduced and seems even desirable for the stability intra-individual variability, optimal design of experiments, and extension of toxicokinetic modelling

Boyer, Edmond

378

The Population of Texas: A Decade of Change.  

E-Print Network [OSTI]

ethnic groups, with 2,059,671 liv- ing in the state in 1970 as compared to 1,399,005 Negro population. Nonwhites as a whole are expected to com- prise a slightly higher percentage of the state's population in 1980. the State's people living in 24...

Skrabanek, R. L.; Upham, W. Kennedy

1974-01-01T23:59:59.000Z

379

Molecular population genetics and epidemiology of Ceratocystis fagacearum  

E-Print Network [OSTI]

and the other population represented a sexually active disease center. Three polymorphic RFLP loci were found. Only one population, Willow Springs, had more than 1 allele present at the RFLP loci. Very low levels of variation (G = 1, 1, and 11.69) were detected...

Ivors, Kelly Lynn

1995-01-01T23:59:59.000Z

380

Theoretical Population Biology 69 (2006) 231233 ESS theory now  

E-Print Network [OSTI]

Theoretical Population Biology 69 (2006) 231­233 Editorial ESS theory now More than 30 years have passed since the concept of evolutionarily stable strategy (ESS) was introduced in the context of animal of the ESS concept. Even today the main idea, and the more general one, remains to look for a population

Lessard, Sabin

Note: This page contains sample records for the topic "moderate population growth" 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

Fast population transfer engineering of three-level systems  

E-Print Network [OSTI]

We design, by invariant-based inverse engineering, resonant laser pulses to perform fast population transfers in three-level systems. The efficiency and laser intensities are examined for different protocols. The energy cost to improve the fidelity is quantified. The laser intensities can be reduced by populating the intermediate state and by multi-mode driving.

Xi Chen; J. G. Muga

2012-07-12T23:59:59.000Z

382

Adaptation of two lucerne populations to different cutting regimes (*)  

E-Print Network [OSTI]

Adaptation of two lucerne populations to different cutting regimes (*) Fabio VERONESI, Anna MARIANI Piante foraggere del Consiglio nazionale delle Ricerche, Perugia, Italia SUMMARY Lucerne, Medicago sativa of proteic concentrates. For this purpose the behaviour of two lucerne populations was studied under

Boyer, Edmond

383

Genetic adaptation of aspen (Populus tremuloides) populations to spring risk  

E-Print Network [OSTI]

in populations from the central boreal plains of Saskatchewan and Alberta, and populations from Minnesota exhibit therefore caution against long- distance seed transfer of Minnesota provenances to the boreal plains exigences e´leve´es en sommes de tempe´rature ont e´te´ note´es pour les popula- tions des plaines bore

Hamann, Andreas

384

Optimal Harvesting of Structured Populations*t WAYNE M. GETZ  

E-Print Network [OSTI]

density of the population [denoted by x(t)] satisfies a nonlinear ordinary differential equationOptimal Harvesting of Structured Populations*t WAYNE M. GETZ National Research Institute for Mathematical Sciences, CSIR, P.O. Box 395, Pretoria 0001, Republic of South Africa Received 18 April 1978

Getz, Wayne M.

385

Population genomics of wild and laboratory zebrafish (Danio rerio)  

E-Print Network [OSTI]

, Bangladesh, Department of Zoology, Tribhuvan University, Kathmandu, Nepal, §§Wellcome Trust Sanger Institute zebrafish (Danio rerio) populations occurring in Nepal, India, and Bangladesh, and we genetically compared natural populations of tradi- tional laboratory models, for which a wide array of genomic resources

Bernatchez, Louis

386

Projection of Chinese motor vehicle growth, oil demand, and CO{sub 2}emissions through 2050.  

SciTech Connect (OSTI)

As the vehicle population in China increases, oil consumption and carbon dioxide (CO{sub 2}) emissions associated with on-road transportation are rising dramatically. During this study, we developed a methodology to project trends in the growth of the vehicle population, oil demand, and CO{sub 2} emissions associated with on-road transportation in China. By using this methodology, we projected--separately--the number of highway vehicles, motorcycles, and rural vehicles in China through 2050. We used three scenarios of highway vehicle growth (high-, mid-, and low-growth) to reflect patterns of motor vehicle growth that have occurred in different parts of the world (i.e., Europe and Asia). All are essentially business-as-usual scenarios in that almost none of the countries we examined has made concerted efforts to manage vehicle growth or to offer serious alternative transportation means to satisfy people's mobility needs. With this caveat, our projections showed that by 2030, China could have more highway vehicles than the United States has today, and by 2035, it could have the largest number of highway vehicles in the world. By 2050, China could have 486-662 million highway vehicles, 44 million motorcycles, and 28 million rural vehicles. These numbers, which assume essentially unmanaged vehicle growth, would result in potentially disastrous effects on the urban infrastructure, resources, and other social and ecological aspects of life in China. We designed three fuel economy scenarios, from conservative to aggressive, on the basis of current policy efforts and expectations of near-future policies in China and in developed countries. It should be noted that these current and near-future policies have not taken into consideration the significant potential for further fuel economy improvements offered by advanced technologies such as electric drive technologies (e.g., hybrid electric vehicles and fuel-cell vehicles). By using vehicle growth projections and potential vehicle fuel economy, we projected that China's on-road vehicles could consume approximately 614-1016 million metric tons of oil per year (12.4-20.6 million barrels per day) and could emit 1.9-3.2 billion metric tons of CO{sub 2} per year in 2050, which will put tremendous pressure on the balance of the Chinese and world oil supply and demand and could have significant implications on climate change. Our analysis shows that, while improvements in vehicle fuel economy are crucial for reducing transportation energy use, containing the growth of the vehicle population could have an even more profound effect on oil use and CO{sub 2} emissions. This benefit is in addition to other societal and environmental benefits--such as reduced congestion, land use, and urban air pollution--that will result from containing vehicle population growth. Developing public transportation systems for personal travel and rail and other modes for freight transportation will be important for containing the growth of motor vehicles in China. Although the population of passenger cars will far exceed that of all truck types in China in the future, our analysis shows that oil use by and CO{sub 2} emissions from the Chinese truck fleet will be far larger than those related to Chinese passenger cars because trucks are very use intensive (more vehicle miles traveled per year) and energy intensive (lower fuel economy). Unfortunately, the potential for improving fuel economy and reducing air pollutant emissions for trucks has not been fully explored; such efforts are needed. Considering the rapid depletion of the world's oil reserve, the heightened global interest in addressing greenhouse gas emissions, and the geopolitical complications of global oil supply and demand, the study results suggest that unmanaged vehicle growth and limited improvements in vehicle fuel efficiency will lead to an unsustainable and unstable transportation system in China. In other words, while our projections do not definitively indicate what will happen in the Chinese transportation sector by 2050, they do demonstrate

Wang, M.; Huo, H.; Johnson, L.; He, D.

2006-12-20T23:59:59.000Z

387

Projection of Chinese motor vehicle growth, oil demand, and Co{sub 2} emissions through 2050.  

SciTech Connect (OSTI)

As the vehicle population in China increases, oil consumption and carbon dioxide (CO{sub 2}) emissions associated with on-road transportation are rising dramatically. During this study, we developed a methodology to project trends in the growth of the vehicle population, oil demand, and CO{sub 2} emissions associated with on-road transportation in China. By using this methodology, we projected separately the number of highway vehicles, motorcycles, and rural vehicles in China through 2050. We used three scenarios of highway vehicle growth (high-, mid-, and low-growth) to reflect patterns of motor vehicle growth that have occurred in different parts of the world (i.e., Europe and Asia). All are essentially business-as-usual scenarios in that almost none of the countries we examined has made concerted efforts to manage vehicle growth or to offer serious alternative transportation means to satisfy people's mobility needs. With this caveat, our projections showed that by 2030, China could have more highway vehicles than the United States has today, and by 2035, it could have the largest number of highway vehicles in the world. By 2050, China could have 486-662 million highway vehicles, 44 million motorcycles, and 28 million rural vehicles. These numbers, which assume essentially unmanaged vehicle growth, would result in potentially disastrous effects on the urban infrastructure, resources, and other social and ecological aspects of life in China. We designed three fuel economy scenarios, from conservative to aggressive, on the basis of current policy efforts and expectations of near-future policies in China and in developed countries. It should be noted that these current and near-future policies have not taken into consideration the significant potential for further fuel economy improvements offered by advanced technologies such as electric drive technologies (e.g., hybrid electric vehicles and fuel-cell vehicles). By using vehicle growth projections and potential vehicle fuel economy, we projected that China's on-road vehicles could consume approximately 614-1016 million metric tons of oil per year (12.4-20.6 million barrels per day) and could emit 1.9-3.2 billion metric tons of CO{sub 2} per year in 2050, which will put tremendous pressure on the balance of the Chinese and world oil supply and demand and could have significant implications on climate change. Our analysis shows that, while improvements in vehicle fuel economy are crucial for reducing transportation energy use, containing the growth of the vehicle population could have an even more profound effect on oil use and CO{sub 2} emissions. This benefit is in addition to other societal and environmental benefits--such as reduced congestion, land use, and urban air pollution--that will result from containing vehicle population growth. Developing public transportation systems for personal travel and rail and other modes for freight transportation will be important for containing the growth of motor vehicles in China. Although the population of passenger cars will far exceed that of all truck types in China in the future, our analysis shows that oil use by and CO{sub 2} emissions from the Chinese truck fleet will be far larger than those related to Chinese passenger cars because trucks are very use intensive (more vehicle miles traveled per year) and energy intensive (lower fuel economy). Unfortunately, the potential for improving fuel economy and reducing air pollutant emissions for trucks has not been fully explored; such efforts are needed. Considering the rapid depletion of the world's oil reserve, the heightened global interest in addressing greenhouse gas emissions, and the geopolitical complications of global oil supply and demand, the study results suggest that unmanaged vehicle growth and limited improvements in vehicle fuel efficiency will lead to an unsustainable and unstable transportation system in China. In other words, while our projections do not definitively indicate what will happen in the Chinese transportation sector by 2050, they do demonstrate th

Huo, H.; Wang, M.; Johnson, L.; He, D.; Energy Systems; Energy Foundation

2007-01-01T23:59:59.000Z

388

The blue plume population in dwarf spheroidal galaxies: genuine blue stragglers or young stellar population?  

E-Print Network [OSTI]

Abridged... Blue stragglers (BSS) are thought to be the product of either primordial or collisional binary systems. In the context of dwarf spheroidal galaxies it is hard to firmly disentangle a genuine BSS population from young main sequence (MS) stars tracing a ~1-2 Gyr old star forming episode. Assuming that their blue plume populations are made of BSS, we estimate the BSS frequency for 8 Local Group non star-forming dwarf galaxies, using a compilation of ground and space based photometry. Our results can be summarized as follows: (i) The BSS frequency in dwarf galaxies, at any given Mv, is always higher than that in globular clusters of similar luminosities; (ii) the BSS frequency for the lowest luminosity dwarf galaxies is in excellent agreement with that observed in the Milky Way halo; and most interestingly (iii) derive a statistically significant anti-correlation between the BSS frequency and the galaxy Mv. The low density, almost collision-less, environments of our dwarf galaxy sample allow us to infer (i) their very low dynamical evolution; (ii) a negligible production of collisional BSS; and consequently (iii) that their blue plumes are mainly made of primordial binaries. The dwarf galaxies anti-correlation can be used as a discriminator: galaxies obeying the anti-correlation are more likely to possess genuine primordial BSS rather than young main sequence stars.

Y. Momany; E. V. Held; I. Saviane; S. Zaggia; L. Rizzi; M. Gullieuszik

2007-04-11T23:59:59.000Z

389

Genomics Populations for Characterization of Economically Important Traits Structured populations of beef cattle with extensive phenotypic records for economical-  

E-Print Network [OSTI]

Genomics Populations for Characterization of Economically Important Traits Structured populations efficiency and carcass merit, are a critical need in the post-genome sequencing era. Coupled with the availability of the 7.5x assembly of the bovine genome sequence and the single nucleotide polymorphisms (SNP

390

Growth and carcass traits and sire effects on growth and carcass traits in purebred beefmaster cattle  

E-Print Network [OSTI]

Koch (1974) estimated the heritability of this particular trait to be 50'/o in cattle in general. Newman et al. (1993) estimated the eflects of individual heterosis in later generations of composite cattle to be 19. 97 + 3. 43 cm (P & . 01). Crockett..., and calves tend to weigh about 8'/o of their marketable weight at birth (Kelley 1994). Birth weight is known to be moderately heritable (20-40'/o), and is used by many producers as an indication of calving ease, and as stated by Koch (1974), as a reference...

Schick, James B.

1996-01-01T23:59:59.000Z

391

SECPOP90: Sector population, land fraction, and economic estimation program  

SciTech Connect (OSTI)

In 1973 Mr. W. Athey of the Environmental Protection Agency wrote a computer program called SECPOP which calculated population estimates. Since that time, two things have changed which suggested the need for updating the original program - more recent population censuses and the widespread use of personal computers (PCs). The revised computer program uses the 1990 and 1992 Population Census information and runs on current PCs as {open_quotes}SECPOP90.{close_quotes} SECPOP90 consists of two parts: site and regional. The site provides population and economic data estimates for any location within the continental United States. Siting analysis is relatively fast running. The regional portion assesses site availability for different siting policy decisions; i.e., the impact of available sites given specific population density criteria within the continental United States. Regional analysis is slow. This report compares the SECPOP90 population estimates and the nuclear power reactor licensee-provided information. Although the source, and therefore the accuracy, of the licensee information is unknown, this comparison suggests SECPOP90 makes reasonable estimates. Given the total uncertainty in any current calculation of severe accidents, including the potential offsite consequences, the uncertainty within SECPOP90 population estimates is expected to be insignificant. 12 refs., 55 figs., 7 tabs.

Humphreys, S.L.; Rollstin, J.A.; Ridgely, J.N.

1997-09-01T23:59:59.000Z

392

Electricity Demand Evolution Driven by Storm Motivated Population Movement  

SciTech Connect (OSTI)

Managing the risks posed by climate change to energy production and delivery is a challenge for communities worldwide. Sea Level rise and increased frequency and intensity of natural disasters due to sea surface temperature rise force populations to move locations, resulting in changing patterns of demand for infrastructure services. Thus, Infrastructures will evolve to accommodate new load centers while some parts of the network are underused, and these changes will create emerging vulnerabilities. Combining climate predictions and agent based population movement models shows promise for exploring the universe of these future population distributions and changes in coastal infrastructure configurations. In this work, we created a prototype agent based population distribution model and developed a methodology to establish utility functions that provide insight about new infrastructure vulnerabilities that might result from these patterns. Combining climate and weather data, engineering algorithms and social theory, we use the new Department of Energy (DOE) Connected Infrastructure Dynamics Models (CIDM) to examine electricity demand response to increased temperatures, population relocation in response to extreme cyclonic events, consequent net population changes and new regional patterns in electricity demand. This work suggests that the importance of established evacuation routes that move large populations repeatedly through convergence points as an indicator may be under recognized.

Allen, Melissa R [ORNL; Fernandez, Steven J [ORNL; Fu, Joshua S [ORNL; Walker, Kimberly A [ORNL

2014-01-01T23:59:59.000Z

393

Method for solid state crystal growth  

DOE Patents [OSTI]

A novel method for high quality crystal growth of intermetallic clathrates is presented. The synthesis of high quality pure phase crystals has been complicated by the simultaneous formation of both clathrate type-I and clathrate type-II structures. It was found that selective, phase pure, single-crystal growth of type-I and type-II clathrates can be achieved by maintaining sufficient partial pressure of a chemical constituent during slow, controlled deprivation of the chemical constituent from the primary reactant. The chemical constituent is slowly removed from the primary reactant by the reaction of the chemical constituent vapor with a secondary reactant, spatially separated from the primary reactant, in a closed volume under uniaxial pressure and heat to form the single phase pure crystals.

Nolas, George S.; Beekman, Matthew K.

2013-04-09T23:59:59.000Z

394

Substrate solder barriers for semiconductor epilayer growth  

DOE Patents [OSTI]

During the growth of compound semiconductors by epitaxial processes, substrates are typically mounted to a support. In modular beam epitaxy, mounting is done using indium as a solder. This method has two drawbacks: the indium reacts with the substrate, and it is difficult to uniformly wet the back of a large diameter substrate. Both of these problems have been successfully overcome by sputter coating the back of the substrate with a thin layer of tungsten carbide or tungsten carbide and gold. In addition to being compatible with the growth of high quality semiconductor epilayers this coating is also inert in all standard substrate cleaning etchants used for compound semiconductors, and provides uniform distribution of energy in radiant heating.

Drummond, Timothy J. (Tijeras, NM); Ginley, David S. (Albuquerque, NM); Zipperian, Thomas E. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

395

Substrate solder barriers for semiconductor epilayer growth  

DOE Patents [OSTI]

During the growth of compound semiconductors by epitaxial processes, substrates are typically mounted to a support. In modular beam epitaxy, mounting is done using indium as a solder. This method has two drawbacks: the indium reacts with the substrate, and it is difficult to uniformly wet the back of a large diameter substrate. Both of these problems have been successfully overcome by sputter coating the back of the substrate with a thin layer of tungsten carbide or tungsten carbide and gold. In addition to being compatible with the growth of high quality semiconductor epilayers this coating is also inert in all standard substrate cleaning etchants used for compound semiconductors, and provides uniform distribution of energy in radiant heating.

Drummond, T.J.; Ginley, D.S.; Zipperian, T.E.

1989-05-09T23:59:59.000Z

396

Substrate solder barriers for semiconductor epilayer growth  

DOE Patents [OSTI]

During the growth of compound semiconductors by epitaxial processes, substrates are typically mounted to a support. In molecular beam epitaxy, mounting is done using indium as a solder. This method has two drawbacks: the indium reacts with the substrate, and it is difficult to uniformly wet the back of a large diameter substrate. Both of these problems have been successfully overcome by sputter coating the back of the substrate with a thin layer of tungsten carbide or tungsten carbide and gold. In addition to being compatible with the growth of high quality semiconductor epilayers this coating is also inert in all standard substate cleaning etchants used for compound semiconductors, and provides uniform distribution of energy in radiant heating. 1 tab.

Drummond, T.J.; Ginley, D.S.; Zipperian, T.E.

1987-10-23T23:59:59.000Z

397

Growth, microstructure and electrical properties of sputter-deposited...  

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

Growth, microstructure and electrical properties of sputter-deposited hafnium oxide (HfO2) thin films grown using HfO2 ceramic Growth, microstructure and electrical properties of...

398

Graphene Layer Growth Chemistry: Five-Six-Ring Flip Reaction  

E-Print Network [OSTI]

25-28, 2007. Topic: Soot GRAPHENE LAYER GROWTH CHEMISTRY:on the zigzag edge of a graphene layer isomerizes to reversea possibly important step in graphene layer growth, thus

Whitesides, Russell; Domin, Dominik; Lester Jr., William A.; Frenklach, Michael

2007-01-01T23:59:59.000Z

399

Cisco Systems Funds "Whisker" Growth Research at the ALS  

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

Cisco Systems Funds "Whisker" Growth Research at the ALS Cisco Systems Funds "Whisker" Growth Research at the ALS Print Friday, 09 November 2012 10:06 Lead-free components have...

400

GROWTH OF SOUTH AFRICAN AFRICA' ~-' ,, I  

E-Print Network [OSTI]

GROWTH OF SOUTH AFRICAN FISHERIES -SQUTH-: WEST .-' AFRICA' ~-' ,, I I , I :--. .,' UN I .............................................. Regrouping of Interests ······························ Fisheries Development Corporation of South Africa, Ltd and the trawling interests, respectively. The quasi-official Fisheries Develop- ment Corporation of South Africa

Note: This page contains sample records for the topic "moderate population growth" 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

HAT-P-34b-HAT-P-37b: FOUR TRANSITING PLANETS MORE MASSIVE THAN JUPITER ORBITING MODERATELY BRIGHT STARS  

SciTech Connect (OSTI)

We report the discovery of four transiting extrasolar planets (HAT-P-34b-HAT-P-37b) with masses ranging from 1.05 to 3.33 M{sub J} and periods from 1.33 to 5.45 days. These planets orbit relatively bright F and G dwarf stars (from V = 10.16 to V = 13.2). Of particular interest is HAT-P-34b which is moderately massive (3.33 M{sub J}), has a high eccentricity of e = 0.441 {+-} 0.032 at a period of P = 5.452654 {+-} 0.000016 days, and shows hints of an outer component. The other three planets have properties that are typical of hot Jupiters.

Bakos, G. A.; Hartman, J. D.; Csubry, Z.; Penev, K. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Torres, G.; Beky, B.; Latham, D. W.; Bieryla, A.; Quinn, S.; Szklenar, T.; Esquerdo, G. A.; Noyes, R. W. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Buchhave, L. A. [Niels Bohr Institute, University of Copenhagen, DK-2100, Denmark, and Centre for Star and Planet Formation, Natural History Museum of Denmark, DK-1350 Copenhagen (Denmark); Kovacs, G. [Konkoly Observatory, Budapest (Hungary); Shporer, A. [LCOGT, 6740 Cortona Drive, Santa Barbara, CA (United States); Fischer, D. A. [Astronomy Department, Yale University, New Haven, CT (United States); Johnson, J. A. [California Institute of Technology, Department of Astrophysics, MC 249-17, Pasadena, CA (United States); Howard, A. W.; Marcy, G. W. [Department of Astronomy, University of California, Berkeley, CA (United States); Sato, B., E-mail: gbakos@astro.princeton.edu [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan); and others

2012-07-15T23:59:59.000Z

402

Feasibility Study of Moderately Accelerated Intensity-Modulated Radiotherapy Plus Concurrent Weekly Cisplatin After Induction Chemotherapy in Locally Advanced Head-and Neck Cancer  

SciTech Connect (OSTI)

Purpose: To evaluate the feasibility and efficacy of moderately accelerated intensity-modulated radiation therapy (IMRT) along with weekly cisplatin, after induction chemotherapy, in patients with locally advanced unresectable head and neck cancer (HNC). Methods and Materials: Patients with Stage III or IV locally advanced HNC, without progressive disease after three courses of induction chemotherapy, received concurrent chemo-IMRT (weekly cisplatin 30 mg/m{sup 2} plus simultaneous integrated boost IMRT). A total of 67.5 Gy in 30 fractions were delivered to primary tumor and involved nodes, 60 Gy in 30 fractions to high-risk nodal areas, and 55.5 Gy in 30 fractions to low-risk nodal areas. Results: In all, 36 patients (median age, 56 years) with International Union Against Cancer (UICC) Stage III (n = 5) and IV (n = 31) were included. Of the 36 patients, 17 had received CF (cisplatin and 5-fluorouracil (CF) and 19 had received docetaxel cisplatin and 5-fluorouracil (DCF). During concurrent chemoradiation, 11 of 36 patients (30.5%) experienced Grade III mucositis (CF, 47%; DCF, 15%; p < 0.04). Grade III pharyngeal-esophageal toxicity was observed in 5 of 19 patients (26.3%; CF, 0.0%; DCF, 26.3%; p = 0.02). Two patients died of complications (5.5%). After chemoradiation, the complete response rate was 63.8%. Two-year local control was 88.7%. Two-year progression free survival and overall survival were 74.5% and 60.9%, respectively. Conclusions: In our experience, a moderately accelerated chemo-IMRT was feasible after induction chemotherapy. However, a noteworthy early death rate of 5.5% was observed. Intensive supportive care strategies should be defined to better manage radiation-induced toxic effects. Longer follow-up is required to determine the incidence of late radiation toxicities and tumor control rates.

Morganti, Alessio G. [Department of Radiotherapy, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Mignogna, Samantha [Department of Palliative Therapies, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Deodato, Francesco; Massaccesi, Mariangela [Department of Radiotherapy, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Cilla, Savino [Department of Medical Physics, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Calista, Franco [Department of Palliative Therapies, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Serafini, Giovanni [Department of Head and Neck Surgery, General Hospital, Termoli (Italy); Digesu, Cinzia [Department of Radiotherapy, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Macchia, Gabriella, E-mail: gmacchia@rm.unicatt.i [Department of Radiotherapy, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Picardi, Vincenzo; Caravatta, Luciana [Department of Radiotherapy, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Di Lullo, Liberato [Department of Oncology, General Hospital, Isernia (Italy); Giglio, Gianfranco [Department of Oncology, General Hospital, Campobasso (Italy); Sallustio, Giuseppina [Department of Radiology, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy); Piermattei, Angelo [Department of Medical Physics, 'John Paul II' Center for High Technology Research and Education in Biomedical Sciences, Campobasso (Italy)

2011-03-15T23:59:59.000Z

403

Original article Effect of growth and cultivar on alfalfa  

E-Print Network [OSTI]

Original article Effect of growth and cultivar on alfalfa digestibility in a multi-site trial B growth in alfalfa (Medicago sativa L), but the effects of genetic variation and the environment. Medicago sativa L = alfalfa / digestibility / forage / genetic variation / growth Résumé - Effet de la

Boyer, Edmond

404

Plant Growth Measurement Techniques Using Near-Infrared  

E-Print Network [OSTI]

Plant Growth Measurement Techniques Using Near-Infrared Imagery Amr Aboelela John Barron Dept, for measuring plant growth for corn seedlings and Caster Oil Bean leaves. A near-infrared camera, which allows to hypothesize where growth might be taking place. Keywords: Near-Infrared Imagery, Corn Seedling stem

Barron, John

405

THE GROWTH OF LIMITS OF VERTEX REPLACEMENT RULES  

E-Print Network [OSTI]

THE GROWTH OF LIMITS OF VERTEX REPLACEMENT RULES JOSEPH PREVITE, MICHELLE PREVITE, AND MARY a vertex replacement rule given by exactly one replacement graph generates an infinite graph for the growth degree of infinite graphs with polynomial growth that are gener- ated by vertex replacement rules

Previte, Joseph P.

406

E-Print Network 3.0 - allogeneic growth plate Sample Search Results  

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

Summary: increasing during the early stages of colonial growth after larval settlement. Parents repressed the growth... may engage in competitive over- growth (Jackson 1977) or...

407

Population Dynamics of Northern Bobwhites in Southern Texas  

E-Print Network [OSTI]

-concealment hypothesis, develop a stochastic simulation model for bobwhite populations, and evaluate the influence of brush canopy coverage (BCC) on short- and long-term demographic performance of bobwhites. Bobwhite nests tend to be situated in taller and denser...

Demaso, Stephen

2010-01-16T23:59:59.000Z

408

Scale-Dependent Relationships between Population and Environment in  

E-Print Network [OSTI]

Scale-Dependent Relationships between Population and Environment in Northeastern Thailand Stephen J. Walsh, Tom P. Evans, Willlam F. Welsh, Barbara Entwlsle, and Ronald R. Rindfuss Abstract with social

Evans, Tom

409

Control orientation and social perception of an alcoholic population  

E-Print Network [OSTI]

CONTROL ORIENTATION AND SOCIAL PERCEPTION OF AN ALCOHOLIC POPULATION A Thesis by ROBERT MILLARD SHAN Submitted to the Graduate College of Texas ASM University in partial fulfil'1ment of the requirement for the degree of MASTER OF SCIENCE...

Shaw, Robert Millard

1975-01-01T23:59:59.000Z

410

Population SAMC, ChIP-chip Data Analysis and Beyond  

E-Print Network [OSTI]

This dissertation research consists of two topics, population stochastics approximation Monte Carlo (Pop-SAMC) for Baysian model selection problems and ChIP-chip data analysis. The following two paragraphs give a brief introduction to each...

Wu, Mingqi

2011-02-22T23:59:59.000Z

411

Ecology and population structure of vibrionaceae in the coastal ocean  

E-Print Network [OSTI]

Extensive genetic diversity has been discovered in the microbial world, yet mechanisms that shape and maintain this diversity remain poorly understood. This thesis investigates to what extent populations of the ...

Preheim, Sarah Pacocha

2010-01-01T23:59:59.000Z

412

Quantitative tumor heterogeneity assessment on a nuclear population  

E-Print Network [OSTI]

Quantitative tumor heterogeneity assessment on a nuclear population basis Anne-Sofie Wessel score in this area was performed. 110 of the 226 TMA cores were scored by a pathologist. The automatic

413

Mitochondrial genomics and northwestern Atlantic population genetics of marine annelids  

E-Print Network [OSTI]

The overarching goal of this thesis was to investigate marine benthic invertebrate phylogenetics and population genetics, focused on the phylum Annelida. Recent expansions of molecular methods and the increasing diversity ...

Jennings, Robert M. (Robert Michael)

2005-01-01T23:59:59.000Z

414

Causes and consequences of sexual selection in a wild population  

E-Print Network [OSTI]

Although sexual selection in nature has been studied intensively, much is still unknown about the evolution of mating systems in wild populations: for example, how male competition and female choice interact, or the effect of environmental...

Stopher, Katie Vivienne

2011-11-24T23:59:59.000Z

415

Genetic Evidence for Recent Population Mixture in India  

E-Print Network [OSTI]

Most Indian groups descend from a mixture of two genetically divergent populations: Ancestral North Indians (ANI) related to Central Asians, Middle Easterners, Caucasians, and Europeans; and Ancestral South Indians (ASI) ...

Moorjani, Priya

416

Interacting populations : hosts and pathogens, prey and predators  

E-Print Network [OSTI]

The interactions between populations can be positive, neutral or negative. Predation and parasitism are both relationships where one species benefits from the interaction at the expense of the other. Predators kill their ...

Klepac, Petra

2007-01-01T23:59:59.000Z

417

Apparent competition or apparent mutualism? shared predation when populations cycle  

E-Print Network [OSTI]

We use simple mathematical models to explore the indirect interactions between two prey species that share a predator when all three species undergo population cycles. The results are compared to analogous findings for systems that reach a stable...

Abrams, Peter A.; Holt, Robert D.; Roth, James D.

1998-01-01T23:59:59.000Z

418

animal population monitoring: Topics by E-print Network  

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

Populations Biology and Medicine Websites Summary: in the atmosphere (i.e., the "greenhouse effect"; IPCC 2007; Figure 1). The greenhouse effect is a natural of this century (IPCC...

419

The wildlife orientation of selected student populations in Victoria, Texas  

E-Print Network [OSTI]

THE WILDLIFE ORIENTATIONS OF SELECTED STUDENT POPULATIONS IN VICTORIA, TEXAS A Thesis by PHYLLIS ANN BRADLEY KIRKPATRICK Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1989 Major Subject: Wildlife and Fisheries Sciences THE WILDLIFE ORIENTATIONS OF SELECTED STUDENT POPULATIONS IN VICTORIA, TEXAS A Thesis by PHYLLIS ANN BRADLEY KIRKPATRICK Approved as to style and content by...

Kirkpatrick, Phyllis Ann Bradley

1989-01-01T23:59:59.000Z

420

Genetic analysis in the Collaborative Cross breeding population  

SciTech Connect (OSTI)

Genetic reference populations in model organisms are critical resources for systems genetic analysis of disease related phenotypes. The breeding history of these inbred panels may influence detectable allelic and phenotypic diversity. The existing panel of common inbred strains reflects historical selection biases, and existing recombinant inbred panels have low allelic diversity. All such populations may be subject to consequences of inbreeding depression. The Collaborative Cross (CC) is a mouse reference population with high allelic diversity that is being constructed using a randomized breeding design that systematically outcrosses eight founder strains, followed by inbreeding to obtain new recombinant inbred strains. Five of the eight founders are common laboratory strains, and three are wild-derived. Since its inception, the partially inbred CC has been characterized for physiological, morphological, and behavioral traits. The construction of this population provided a unique opportunity to observe phenotypic variation as new allelic combinations arose through intercrossing and inbreeding to create new stable genetic combinations. Processes including inbreeding depression and its impact on allelic and phenotypic diversity were assessed. Phenotypic variation in the CC breeding population exceeds that of existing mouse genetic reference populations due to both high founder genetic diversity and novel epistatic combinations. However, some focal evidence of allele purging was detected including a suggestive QTL for litter size in a location of changing allele frequency. Despite these inescapable pressures, high diversity and precision for genetic mapping remain. These results demonstrate the potential of the CC population once completed and highlight implications for development of related populations. Supplementary material consists of Supplementary Table 1 Phenotypic means, variances, ranges and heritabilities for all traits and generations, Supplementary Table 2, all phenotypic values, Supplementary Table 3, multiple QTL mapping.

Philip, Vivek [University of Tennessee, Knoxville (UTK); Sokoloff, Greta [ORNL; Ackert-Bicknell, Cheryl [Jackson Laboratory, The, Bar Harbor, ME; Striz, Martin [University of Kentucky, Lexington; Branstetter, Lisa R [ORNL; Beckmann, Melissa [ORNL; Spence, Jason S [ORNL; Jackson, Barbara L [ORNL; Galloway, Leslie D [ORNL; Barker, Gene [ORNL; Wymore, Ann M [Oak Ridge National Laboratory (ORNL); Hunsicker, Patricia R [ORNL; Durtschi, David W [University of Kentucky, Lexington; Shaw, Ginger S [University of Kentucky, Lexington; Shinpock, Sarah G [ORNL; Manly, Kenneth F [University of Kentucky, Lexington; Miller, Darla R [ORNL; Donahue, Kevin [University at Buffalo, NY; Culiat, Cymbeline T [ORNL; Churchill, Gary A [Jackson Laboratory, The, Bar Harbor, ME; Lariviere, William R [University of Pittsburgh; Palmer, Abraham [University of Chicago; O'Hara, Bruce [University of Kentucky; Voy, Brynn H [ORNL; Chesler, Elissa J [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

Scaling of bubble growth in a porous medium. Topical report  

SciTech Connect (OSTI)

Processes involving liquid-to-gas phase change in porous media are routinely encountered, for example in the recovery of oil, geothermal processes, nuclear waste disposal or enhanced heat transfer. They involve diffusion (and convection) in the pore space, driven by an imposed supersaturation in pressure or temperature. Phase change proceeds by nucleation and phase growth. Depending on pore surface roughness, a number of nucleation centers exist, thus phase growth occurs from a multitude of clusters. Contrary to growth in the bulk or in a Hele-Shaw cell, however, growth patterns in porous media are disordered and not compact. As in immiscible displacements, they reflect the underlying pore microstructure. The competition between multiple clusters is also different from the bulk. For example, cluster growth may be controlled by a combination of diffusion (e.g. Laplace equation in the quasi-static case) with percolation. Novel growth patterns axe expected from this competition. While multiple cluster growth is important, the simpler problem of single-bubble growth is still not well understood. In this section, we focus on the growth of a single bubble, subject to a fixed far-field supersaturation (e.g. by lowering the pressure in a supersaturated solution or by raising the temperature in a. superheated liquid). Our emphasis is on deriving a scaling theory for growth at conditions of quasi-static diffusion, guided by recent experimental observations. Visualization of bubble growth in model porous media was recently conducted using 2-D etched-glass micromodels.

Satik, C.; Yortsos, Y.; Li, X. [Univ. of Southern California, Los Angeles, CA (United States). Dept. of Chemical Engineering

1995-07-01T23:59:59.000Z

422

Growth strains and creep in thermally grown alumina : oxide growth mechanisms.  

SciTech Connect (OSTI)

In situ measurements of growth strains and creep relaxation in {alpha}-Al{sub 2}O{sub 3} films, isothermally grown on {beta}-NiAl alloys at 1100 C, are reported and analyzed. Samples containing the reactive element Zr, and Zr-free samples, are examined. For Zr-free samples, steady state growth strains are compressive, whereas the growth strains are tensile when the reactive element (RE) is added to the alloy. This behavior is attributed to the counterflow of oxygen and aluminum interstitials, and to simultaneous counterflow of oxygen and aluminum vacancies, all moving through the grain boundaries. Cross diffusing oxygen and aluminum interstitials may merge and combine within the film, forming new oxide along grain boundary walls, a mechanism that leads to an in-plane compressive stress. Cross diffusing oxygen and aluminum vacancies will also merge and combine within the film; in this case material is removed from grain boundary walls, a mechanism that leads to an in-plane tensile stress. When no RE is present, the interstitial mechanism dominates and the resultant stress is compressive. Consistent with the 'dynamic segregation model', the RE slows the outdiffusion of Al interstitials permitting the tensile mechanism to dominate. This interpretation invokes the unconventional view that oxygen and aluminum interstitials and vacancies, created in and driven by the strong chemical gradient, all participate meaningfully in the scale growth process. Grain boundary diffusion measurements were obtained from low stress creep data, interpreted using the Coble model of grain boundary diffusion. Reported diffusion measurements of oxygen through grain boundaries of {alpha}-Al{sub 2}O{sub 3}, which are known to be inconsistent with oxide scale growth, are critically examined. A simple picture, a 'balanced defect model', emerges that is consistent with the dynamic segregation model, observed growth stresses and their dependence on the presence of a reactive element, sequential oxidation experiments, and our best knowledge about grain boundary diffusion coefficients.

Veal, B. W.; Paulikas, A. P.; Materials Science Division

2008-01-01T23:59:59.000Z

423

Modelling climate-related variability of tuna populations from a coupled ocean-biogeochemical-populations dynamics model  

E-Print Network [OSTI]

pelamis) and yellowfin (Thunnus albacares) had higher recruitments during El Niño events, the sub of skipjack (Katsuwonus pelamis) population (Lehodey, 1997). However, the run represented a short time

Maine, University of

424

Dynamic Modeling of Aerobic Growth of Shewanella oneidensis. Predicting Triauxic Growth, Flux Distributions and Energy Requirement for Growth  

SciTech Connect (OSTI)

A model-based analysis is conducted to investigate metabolism of Shewanella oneidensis MR-1 strain in aerobic batch culture, which exhibits an intriguing growth pattern by sequentially consuming substrate (i.e., lactate) and by-products (i.e., pyruvate and acetate). A general protocol is presented for developing a detailed network-based dynamic model for S. oneidensis based on the Lumped Hybrid Cybernetic Model (LHCM) framework. The L-HCM, although developed from only limited data, is shown to accurately reproduce exacting dynamic metabolic shifts, and provide reasonable estimates of energy requirement for growth. Flux distributions in S. oneidensis predicted by the L-HCM compare very favorably with 13C-metabolic flux analysis results reported in the literature. Predictive accuracy is enhanced by incorporating measurements of only a few intracellular fluxes, in addition to extracellular metabolites. The L-HCM developed here for S. oneidensis is consequently a promising tool for the analysis of intracellular flux distribution and metabolic engineering.

Song, Hyun-Seob; Ramkrishna, Doraiswami; Pinchuk, Grigoriy E.; Beliaev, Alex S.; Konopka, Allan; Fredrickson, Jim K.

2013-01-01T23:59:59.000Z

425

Reserve growth important to U.S. gas supply  

SciTech Connect (OSTI)

The term reserve growth refers to the typical increases in estimated ultimate recovery that occur as oil or gas fields are developed and produced. An example for a particular field helps explain the nature of reserve growth. This gas field was discovered in the mid-1940s. In 1977, its ultimate recovery was estimated to be 2.1 tcf of gas. One might think that after some 30 years of development and production, the resource potential of a field would be well understood. However, by 1991 the estimated ultimate recovery of this field had increased to 3.1 tcf. Reserve growth over the 15 year period totaled 1 tcf, and it shows no sign of stopping. The paper discusses reserve growth trends, reserve growth roots, and future reserve growth. It is concluded that much work remains to be done on the phenomenon of reserve growth, which is arguably the most significant research problem in the field of hydrocarbon resource assessment.

Schmoker, J.W. [Geological Survey, Denver, CO (United States); Attanasi, E.D. [Geological Survey, Reston, VA (United States)

1997-01-27T23:59:59.000Z

426

Growth curve analysis of Rambouillet ewes  

E-Print Network [OSTI]

for this study. However, most of the results were reported for 152 observations; a subset of the 283 records that contained the smst complete set of weighted' Type of birth and rearing was the single most significant source of variation for preweaning body... weights and growth rates. Estimation of mature weight obtained for 184 records was 59. 6 + . 77 kilograms. Based upon analysis of yearly weights, ewes had reached maturity by 42 months of age. Birth and 120-day weight were lower than those reported...

Mathenge, James Mwai

1981-01-01T23:59:59.000Z

427

Growth and propagation of Acer grandidentatum Nutt.  

E-Print Network [OSTI]

to exogenous auxins, time of season, and type of cutting to determine ability to root from cuttings of current season's growth. Five month old seedlings from the Sabinal source averaged 13. 0 + 1. 9 cm (st. dev. ) in height. At nine months of age, a posi... utilizing softwood and semihardwood single node, 6 cm terminal, or 25 cm terminal cuttings taken from 7 trees during June to September and treated with 0. 1X IBA and 0. 4% IBA. Approximately 26/ of the cuttings callused. Vascular differentiation...

Tankersley, Boyce Elbert

2012-06-07T23:59:59.000Z

428

Crystal growth under external electric fields  

SciTech Connect (OSTI)

This is a review article concerning the crystal growth under external electric fields that has been studied in our lab for the past 10 years. An external field is applied electrostatically either through an electrically insulating phase or a direct injection of an electric current to the solid-interface-liquid. The former changes the chemical potential of both solid and liquid and controls the phase relationship while the latter modifies the transport and partitioning of ionic solutes in the oxide melt during crystallization and changes the solute distribution in the crystal.

Uda, Satoshi; Koizumi, Haruhiko; Nozawa, Jun; Fujiwara, Kozo [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577 (Japan)

2014-10-06T23:59:59.000Z

429

Sandia National Laboratories: thin-film growth  

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 Security Administration the1developmentturbineredox-activeNational SolartSSLPV materials (Si CIGS CdTe)growth

430

Population genomics: Whole-genome analysis of polymorphism and divergence in Drosophila simulans  

E-Print Network [OSTI]

PLoS BIOLOGY Population Genomics: Whole-Genome Analysis ofwww.plosbiology.org Population Genomics of D. simulans Table11 | e310 Population Genomics of D. simulans Table S15. GO

2007-01-01T23:59:59.000Z

431

Author's personal copy Genetic diversity patterns in Phragmites australis at the population,  

E-Print Network [OSTI]

and the Romanian population, indicating that a very extensive gene pool exists in Europe, to which both Po Plain and Romanian populations belong. There is however a certain degree of genetic structure among the populations

Schierup, Mikkel Heide

432

Dose reconstruction for the Urals population. Joint Coordinating Committee on Radiation Effects Research, Project 1.1 -- Final report  

SciTech Connect (OSTI)

This work is being carried out as a feasibility study to determine if a long-term course of work can be implemented to assess the long-term risks of radiation exposure delivered at low to moderate dose rates to the populations living in the vicinity of the Mayak Industrial Association (MIA). This work was authorized and conducted under the auspices of the US-Russian Joint Coordinating Committee on Radiation Effects Research (JCCRER) and its Executive Committee (EC). The MIA was the first Russian site for the production and separation of plutonium. This plant began operation in 1948, and during its early days there were technological failures that resulted in the release of large amounts of waste into the rather small Techa River. There were also gaseous releases of radioiodines and other radionuclides during the early days of operation. In addition, there was an accidental explosion in a waste storage tank in 1957 that resulted in a significant release. The Techa River Cohort has been studied for several years by scientists from the Urals Research Centre for Radiation Medicine and an increase in both leukemia and solid tumors has been noted.

Degteva, M.O. [Urals Research Center for Radiation Medicine, Chelyabinsk (Russian Federation)] [Urals Research Center for Radiation Medicine, Chelyabinsk (Russian Federation); Drozhko, E. [Branch 1 of Moscow Biophysics Inst., Ozersk (Russian Federation)] [Branch 1 of Moscow Biophysics Inst., Ozersk (Russian Federation); Anspaugh, L.R. [Lawrence Livermore National Lab., CA (United States)] [Lawrence Livermore National Lab., CA (United States); Napier, B.A. [Pacific Northwest National Lab., Richland, WA (United States)] [Pacific Northwest National Lab., Richland, WA (United States); Bouville, A.C. [National Cancer Inst., Bethesda, MD (United States)] [National Cancer Inst., Bethesda, MD (United States); Miller, C.W. [Centers for Disease Control and Prevention, Atlanta, GA (United States)] [Centers for Disease Control and Prevention, Atlanta, GA (United States)

1996-02-01T23:59:59.000Z

433

A Statistical Physics Perspective on Web Growth  

E-Print Network [OSTI]

Approaches from statistical physics are applied to investigate the structure of network models whose growth rules mimic aspects of the evolution of the world-wide web. We first determine the degree distribution of a growing network in which nodes are introduced one at a time and attach to an earlier node of degree k with rate A_ksim k^gamma. Very different behaviors arise for gamma1. We also analyze the degree distribution of a heterogeneous network, the joint age-degree distribution, the correlation between degrees of neighboring nodes, as well as global network properties. An extension to directed networks is then presented. By tuning model parameters to reasonable values, we obtain distinct power-law forms for the in-degree and out-degree distributions with exponents that are in good agreement with current data for the web. Finally, a general growth process with independent introduction of nodes and links is investigated. This leads to independently growing sub-networks that may coalesce with other sub-networks. General results for both the size distribution of sub-networks and the degree distribution are obtained.

P. L. Krapivsky; S. Redner

2002-06-07T23:59:59.000Z

434

Cavity growth patterns on the partial seam crip test  

SciTech Connect (OSTI)

The Partial Seam CRIP (PSC) test conducted by Lawrence Livermore National Laboratories was characterized by two distinctly different types of cavity growth. Portions of the thermal data from the test have been analyzed using conduction models to infer the dynamics of the cavity growth. Growth during the first phase of the test was characterized by rapid movement of the process to the top of the seam. The growth patterns during this time were remarkably similar to those observed on the Hoe Creek III test. Cavity growth observed later in the test, after the CRIP maneuver and when the horizontal production was in use, showed more lateral extent within the seam similar to patterns that were observed on the Hanna UCG tests. This type of growth resulted in improved process efficiency, at least for the early post-CRIP period. Calculations using a thermal-mechanical growth model are consistent with both types of growth observed. In particular, when stringers that were present in the seam are included in the model calculations, the more favorable growth patterns observed in the test are predicted. It is concluded that non-coal layers within the seam have the potential to significantly affect cavity growth and thus their presence should be accounted for when designing a process. 11 references, 10 figures, 1 table.

Hommert, P.J.

1984-01-01T23:59:59.000Z

435

The Magellanic Bridge: The Nearest Purely Tidal Stellar Population  

E-Print Network [OSTI]

We report on observations of the stellar populations in twelve fields spanning the region between the Magellanic Clouds, made with the Mosaic-II camera on the 4-meter telescope at the Cerro-Tololo Inter-American Observatory. The two main goals of the observations are to characterize the young stellar population (which presumably formed in situ in the Bridge and therefore represents the nearest stellar population formed from tidal debris), and to search for an older stellar component (which would have been stripped from either Cloud as stars, by the same tidal forces which formed the gaseous Bridge). We determine the star-formation history of the young inter-Cloud population, which provides a constraint on the timing of the gravitational interaction which formed the Bridge. We do not detect an older stellar population belonging to the Bridge in any of our fields, implying that the material that was stripped from the Clouds to form the Magellanic Bridge was very nearly a pure gas.

Jason Harris

2006-12-04T23:59:59.000Z

436

Biomarker monitoring of a population residing near uranium mining activities  

SciTech Connect (OSTI)

We investigated whether residents residing near uranium mining operations (target population), who are potentially exposed to toxicants from mining waste, have increased genotoxic effects compared with people residing elsewhere (reference population). Population surveys were conducted, and 24 target and 24 reference residents were selected. The selected subjects and controls were matched on age and gender and they were nonsmokers. Blood samples were collected for laboratory studies. The standard cytogenetic assay was used to determine chromosome aberration frequencies, and the challenge assay was used to investigate DNA repair responses. We found that individuals who resided near uranium mining operations had a higher mean frequency of cells with chromosome aberrations and higher deletion frequency but lower dicentric frequency than the reference group, although the difference was not statistically significant. After cells were challenged by exposure to {gamma}-rays, the target population had a significantly higher frequency of cells with chromosome aberrations and deletion frequency than the reference group. The latter observation is indicative of abnormal DNA repair response in the target population. 22 refs., 3 tabs.

Au, W.W.; Legator, M.S.; Whorton, E.B.; Wilkinson, G.S.; Gabehart, G.J.; Lane, R.G. [Univ. of Texas Medical Branch, Galveston, TX (United States)

1995-05-01T23:59:59.000Z

437

Multiscale modeling of oscillations and spiral waves in Dictyostelium populations  

E-Print Network [OSTI]

Unicellular organisms exhibit elaborate collective behaviors in response to environmental cues. These behaviors are controlled by complex biochemical networks within individual cells and coordinated through cell-to-cell communication. Describing these behaviors requires new mathematical models that can bridge scales -- from biochemical networks within individual cells to spatially structured cellular populations. Here, we present a family of multiscale models for the emergence of spiral waves in the social amoeba Dictyostelium discoideum. Our models exploit new experimental advances that allow for the direct measurement and manipulation of the small signaling molecule cAMP used by Dictyostelium cells to coordinate behavior in cellular populations. Inspired by recent experiments, we model the Dictyostelium signaling network as an excitable system coupled to various pre-processing modules. We use this family of models to study spatially unstructured populations by constructing phase diagrams that relate the properties of population-level oscillations to parameters in the underlying biochemical network. We then extend our models to include spatial structure and show how they naturally give rise to spiral waves. Our models exhibit a wide range of novel phenomena including a density dependent frequency change, bistability, and dynamic death due to slow cAMP dynamics. Our modeling approach provides a powerful tool for bridging scales in modeling of Dictyostelium populations.

Javad Noorbakhsh; David Schwab; Allyson Sgro; Thomas Gregor; Pankaj Mehta

2014-09-12T23:59:59.000Z

438

Can coyotes affect deer populations in Southeastern North America?  

SciTech Connect (OSTI)

ABSTRACT The coyote (Canis latrans) is a recent addition to the fauna of eastern North America, and in many areas coyote populations have been established for only a decade or two. Although coyotes are known predators of white-tailed deer (Odocoileus virginianus) in their historic range, effects this new predator may have on eastern deer populations have received little attention. We speculated that in the southeastern United States, coyotes may be affecting deer recruitment, and we present 5 lines of evidence that suggest this possibility. First, the statewide deer population in South Carolina has declined coincident with the establishment and increase in the coyote population. Second, data sets from the Savannah River Site (SRS) in South Carolina indicate a new mortality source affecting the deer population concurrent with the increase in coyotes. Third, an index of deer recruitment at SRS declined during the period of increase in coyotes. Fourth, food habits data from SRS indicate that fawns are an important food item for coyotes during summer. Finally, recent research from Alabama documented significant coyote predation on fawns there. Although this evidence does not establish cause and effect between coyotes and observed declines in deer recruitment, we argue that additional research should proactively address this topic in the region. We identified several important questions on the nature of the deercoyote relationship in the East.

Kilgo, J., C.; Ray, H., Scott; Ruth, Charles; Miller, Karl, V.

2010-07-01T23:59:59.000Z

439

Characterization of the U.S. Industrial/Commercial Boiler Population...  

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

Characterization of the U.S. IndustrialCommercial Boiler Population - Final Report, May 2005 Characterization of the U.S. IndustrialCommercial Boiler Population - Final Report,...

440

E-Print Network 3.0 - access microbial populations Sample Search...  

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

community or population if we change our scale of inquiry. As an example, consider the spatial... sequence data to examine the spatial structure in microbial populations. This...

Note: This page contains sample records for the topic "moderate population growth" 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

E-Print Network 3.0 - ancestral population genomics Sample Search...  

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

population genomics Search Powered by Explorit Topic List Advanced Search Sample search results for: ancestral population genomics Page: << < 1 2 3 4 5 > >> 1 The Coancestry of...

442

E-Print Network 3.0 - animal species population Sample Search...  

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

of Biodiversity Summary: of populations is a single species is important to conservation management.species is important to conservation... Criteria Populations...

443

BUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TO ENVIRONMENTAL POLLUTION  

E-Print Network [OSTI]

BUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TO ENVIRONMENTAL POLLUTIONBUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TO ENVIRONMENTAL POLLUTION

Sacks, Susan T.

2014-01-01T23:59:59.000Z

444

E-Print Network 3.0 - anthropogenic population collapse Sample...  

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

: "Population and Climate Change: A Proposal to Couple Population and Earth System Models" Harald Rybka... , a German RISE intern, will talk about the first steps he...

445

E-Print Network 3.0 - american amphibian populations Sample Search...  

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

frag- Summary: prompted land managers to seek ways of manag- ing amphibian populations at landscape scales. For example... analyses using real data on amphibian populations, and...

446

E-Print Network 3.0 - adult brazilian population Sample Search...  

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

in the Brazilian Shield are indeed older than... between Amazon populations in eastern Bolivia and western Brazil (Rondnia) and Paran basin populations... and Lysapsus species...

447

Importance of Delayed Neutrons on the Coupled Neutronic-Thermohydraulic Stability of a Natural Circulation Heavy Water-Moderated Boiling Light Water-Cooled Reactor  

SciTech Connect (OSTI)

The coupled neutronic-thermohydraulic stability characteristics of a natural circulation heavy water-moderated boiling light water-cooled reactor was investigated analytically considering the effects of prompt and delayed neutrons. For this purpose, the reactor considered is the Indian Advanced Heavy Water Reactor. The analytical model considers a point kinetics model for the neutron dynamics, a homogeneous two-phase flow model for the coolant thermal hydraulics, and a lumped heat transfer model for the fuel thermal dynamics. A higher mode of oscillation having a frequency much greater than the density-wave oscillation frequency was observed if prompt neutrons alone were considered. The occurrence of a higher mode of oscillation was found to be dependent on the concentration of delayed neutrons, the void reactivity coefficient, and the fuel time constant. The core inlet subcooling is found to have different effects on the decay ratio of the fundamental and higher modes of oscillations. The influences of void reactivity coefficient and fuel time constant on the fundamental and higher modes of oscillations were also found to be opposite in nature.

Nayak, A.K. [Bhaha Atomic Research Centre (India); Aritomi, M. [Tokyo Institute of Technology (Japan); Raj, V. Venkat [Bhaha Atomic Research Centre (India)

2001-07-15T23:59:59.000Z

448

auxin-induced root growth: Topics by E-print Network  

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

of roots was unaffected by the moderate salinity treatment while requires extra energy, which may be provided by an increase in maintenance respiration. At higher...

449

Session: What do we know about cumulative or population impacts  

SciTech Connect (OSTI)

This session at the Wind Energy and Birds/Bats workshop consisted of a panel discussion followed by a discussion/question and answer period. The panelists were Paul Kerlinger, Curry and Kerlinger, LLC, Al Manville, U.S. Fish and Wildlife Service, and Bill Kendall, US Geological Service. The panel addressed the potential cumulative impacts of wind turbines on bird and bat populations over time. Panel members gave brief presentations that touched on what is currently known, what laws apply, and the usefulness of population modeling. Topics addressed included which sources of modeling should be included in cumulative impacts, comparison of impacts from different modes of energy generation, as well as what research is still needed regarding cumulative impacts of wind energy development on bird and bat populations.

Kerlinger, Paul; Manville, Al; Kendall, Bill

2004-09-01T23:59:59.000Z

450

POPULATION III STARS AND REMNANTS IN HIGH-REDSHIFT GALAXIES  

SciTech Connect (OSTI)

Recent simulations of Population III star formation have suggested that some fraction form in binary systems, in addition to having a characteristic mass of tens of solar masses. The deaths of metal-free stars result in the initial chemical enrichment of the universe and the production of the first stellar-mass black holes. Here we present a cosmological adaptive mesh refinement simulation of an overdense region that forms a few 10{sup 9} M{sub Sun} dark matter halos and over 13,000 Population III stars by redshift 15. We find that most halos do not form Population III stars until they reach M{sub vir} {approx} 10{sup 7} M{sub Sun} because this biased region is quickly enriched from both Population III and galaxies, which also produce high levels of ultraviolet radiation that suppress H{sub 2} formation. Nevertheless, Population III stars continue to form, albeit in more massive halos, at a rate of {approx}10{sup -4} M{sub Sun} yr{sup -1} Mpc{sup -3} at redshift 15. The most massive starless halo has a mass of 7 Multiplication-Sign 10{sup 7} M{sub Sun }, which could host massive black hole formation through the direct gaseous collapse scenario. We show that the multiplicity of the Population III remnants grows with halo mass above 10{sup 8} M{sub Sun }, culminating in 50 remnants located in 10{sup 9} M{sub Sun} halos on average. This has implications that high-mass X-ray binaries and intermediate-mass black holes that originate from metal-free stars may be abundant in high-redshift galaxies.

Xu Hao; Norman, Michael L. [Center for Astrophysics and Space Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093 (United States); Wise, John H., E-mail: hxu@ucsd.edu, E-mail: mlnorman@ucsd.edu, E-mail: jwise@gatech.edu [Center for Relativistic Astrophysics, School of Physics, Georgia Institute of Technology, 837 State Street, Atlanta, GA 30332 (United States)

2013-08-20T23:59:59.000Z

451

Cetacean Distribution in Ecuador: Spatial and Temporal Relationships between Ocean Fronts and the Apex Predator Population  

E-Print Network [OSTI]

Five line transect surveys for marine mammals were conducted offshore of mainland Ecuador and the Galpagos Islands from 2008-2011. These data were used in conjunction with MODIS (Moderate Resolution Imaging Spectroradiometer) observations of ocean...

O'Hern, Julia

2012-12-10T23:59:59.000Z

452

Characteristics and Changes in the Texas Farm Population.  

E-Print Network [OSTI]

of the people were similarly classified. Nonwhites comprised 14.6 percent of the total farm population of Texas in 1950. The remaining 85.4 percent were classified as whites. Negroes have been decreasing at a faster rate on farms in recent years than whites.... They also had greater losses than whites in the farm populations of the West South Central division and of the United States. Both of the racial elements on farms make up smaller prdportions of their total numbers in the State. In 1940, 2 out of 5 Negroes...

Skrabanek, R. L.

1955-01-01T23:59:59.000Z

453

Methods for the survey and genetic analysis of populations  

DOE Patents [OSTI]

The present invention relates to methods for performing surveys of the genetic diversity of a population. The invention also relates to methods for performing genetic analyses of a population. The invention further relates to methods for the creation of databases comprising the survey information and the databases created by these methods. The invention also relates to methods for analyzing the information to correlate the presence of nucleic acid markers with desired parameters in a sample. These methods have application in the fields of geochemical exploration, agriculture, bioremediation, environmental analysis, clinical microbiology, forensic science and medicine.

Ashby, Matthew

2003-09-02T23:59:59.000Z

454

MIX and Instability Growth from Oblique Shock  

SciTech Connect (OSTI)

We have studied the formation and evolution of shock-induced mix resulting from interface features in a divergent cylindrical geometry. In this research a cylindrical core of high-explosive was detonated to create an oblique shock wave and accelerate the interface. The interfaces studied were between the high-explosive/aluminum, aluminum/plastic, and finally plastic/air. Pre-emplaced surface features added to the aluminum were used to modify this interface. Time sequence radiographic imaging quantified the resulting instability formation from the growth phase to over 60 {micro}s post-detonation. Thus allowing the study of the onset of mix and evolution to turbulence. The plastic used here was porous polyethylene. Radiographic image data are compared with numerical simulations of the experiments.

Molitoris, J D; Batteux, J D; Garza, R G; Tringe, J W; Souers, P C; Forbes, J W

2011-07-22T23:59:59.000Z

455

Head erosion with emittance growth in PWFA  

SciTech Connect (OSTI)

Head erosion is one of the limiting factors in plasma wakefield acceleration (PWFA). We present a study of head erosion with emittance growth in field-ionized plasma from the PWFA experiments performed at the FACET user facility at SLAC. At FACET, a 20.3 GeV bunch with 1.8 Multiplication-Sign 10{sup 10} electrons is optimized in beam transverse size and combined with a high density lithium plasma for beam-driven plasma wakefield acceleration experiments. A target foil is inserted upstream of the plasma source to increase the bunch emittance through multiple scattering. Its effect on beamplasma interaction is observed with an energy spectrometer after a vertical bend magnet. Results from the first experiments show that increasing the emittance has suppressed vapor field-ionization and plasma wakefields excitation. Plans for the future are presented.

Li, S. Z.; Adli, E.; England, R. J.; Frederico, J.; Gessner, S. J.; Hogan, M. J.; Litos, M. D.; Walz, D. R.; Muggli, P.; An, W.; Clayton, C. E.; Joshi, C.; Lu, W.; Marsh, K. A.; Mori, W.; Vafaei, N. [SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States) and SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States) and University of Oslo, Oslo, N-0316 (Norway) and SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States); Max Planck Institute for Physics, Munich (Germany); University of California, Los Angeles, CA 90095 (United States)

2012-12-21T23:59:59.000Z

456

Lid for improved dendritic web growth  

SciTech Connect (OSTI)

A lid for a susceptor in which a crystalline material is melted by induction heating to form a pool or melt of molten material from which a dendritic web of essentially a single crystal of the material is pulled through an elongated slot in the lid and the lid has a pair of generally round openings adjacent the ends of the slot and a groove extends between each opening and the end of the slot. The grooves extend from the outboard surface of the lid to adjacent the inboard surface providing a strip contiguous with the inboard surface of the lid to produce generally uniform radiational heat loss across the width of the dendritic web adjacent the inboard surface of the lid to reduce thermal stresses in the web and facilitate the growth of wider webs at a greater withdrawal rate.

Duncan, Charles S. (Penn Hills, PA); Kochka, Edgar L. (Greentree, PA); Piotrowski, Paul A. (Monroeville, PA); Seidensticker, Raymond G. (Forest Hills, PA)

1992-03-24T23:59:59.000Z

457

Association of automobile passenger transportation and economic growth in Japan  

E-Print Network [OSTI]

) (Nember) January 1969 ABSTRACT Association cf Automobile Passenger Transportation and Economic Growth in Japan. (January 1969) Teruhiko Boric, B. A. , &faseda University Directed by: Dr. ~felvin L. Greenhut In order to evaluate the growth... of Japanese post-war passenger transportation, a comparative study of the U. S. passenger transporta- ti. on development between 1910 and 1940 has been made. The growth rate of automobile ownership prior to the Great Depression is larger than the rate...

Horie, Teruhiko

1969-01-01T23:59:59.000Z

458

Growth of epitaxial thin films by pulsed laser ablation  

SciTech Connect (OSTI)

High-quality, high-temperature superconductor (HTSc) films can be grown by the pulsed laser ablation (PLA) process. This article provides a detailed introduction to the advantages and curent limitations of PLA for epitaxial film growth. Emphasis is placed on experimental methods and on exploitation of PLA to control epitaxial growth at either the unit cell or the atomic-layer level. Examples are taken from recent HTSc film growth. 33 figs, 127 refs. (DLC)

Lowndes, D.H.

1992-10-01T23:59:59.000Z

459

Growth of epitaxial thin films by pulsed laser ablation  

SciTech Connect (OSTI)

High-quality, high-temperature superconductor (HTSc) films can be grown by the pulsed laser ablation (PLA) process. This article provides a detailed introduction to the advantages and curent limitations of PLA for epitaxial film growth. Emphasis is placed on experimental methods and on exploitation of PLA to control epitaxial growth at either the unit cell or the atomic-layer level. Examples are taken from recent HTSc film growth. 33 figs, 127 refs. (DLC)

Lowndes, D.H.

1992-01-01T23:59:59.000Z

460

Coefficient ? as a growth analysis parameter for wheat  

E-Print Network [OSTI]

Subject: Agronony COEFFICIENT u AS A GROWTH ANALYSIS PARAMETER FOR WHEAT A Thesis by JEAN-FRANCOIS LEDENT Approved as to style and content by: c x& W&~ (Chairman of Committee) (Member ) (Head of Department) Member) (Member) /'L~C e (Memb er...) August 1969 ABSTRACT COEFFICIL'NT u AS A GROWTH ANALYSIS PARAMETER FOR WHEAT (August 1969) Jean-Francoi. s Ledent, Ingenieur Agronome, Universite de Louvain (Belgium) Directed by: Dr. E. C. Holt Coefficient u , a growth parameter. , was calculated...

Ledent, Jean-Francois

1969-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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

ALS Technique Gives Novel View of Lithium Battery Dendrite Growth  

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

ALS Technique Gives Novel View of Lithium Battery Dendrite Growth Print Lithium-ion batteries, popular in today's electronic devices and electric vehicles, could gain significant...

462

Before the Subcommittee on Economic Growth, Job Creation and...  

Energy Savers [EERE]

Job Creation and Regulatory Affairs - House Committee on Oversight and Governmant Reform Before the Subcommittee on Economic Growth, Job Creation and Regulatory Affairs -...

463

aging tumor growth: Topics by E-print Network  

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

1983), provide valuable data on the age 85 AGE AND GROWTH OF SKIPJACK TUNA, KATSUWONUS PELAMIS, AND YELLOWFIN TUNA, THUNNUS ALBACARES, AS INDICATED Environmental Sciences and...

464

Grain growth and phase stability of nanocrystalline cubic zirconia...  

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

of nanocrystalline cubic zirconia under ion irradiation. Abstract: Grain growth, oxygen stoichiometry and phase stability of nanostructurally-stabilized zirconia (NSZ) in...

465

Why electric-power growth will not resume  

SciTech Connect (OSTI)

Basic structural changes now occurring in the US economy have irrevocably broken previously existing links between gross national product and the growth of sales of electricity. The author contends that the extent of the macroeconomic changes presently taking place are underestimated by many electric-utility planners and, as a result, forecasts projecting electricity growth rates about even with gross national product growth levels when the economy recovers are too high. The article states that electric-utility companies are entering an indefinite period of stagnant sales growth. But it closes on the positive note that electric-utility managements can take certain steps to make their businesses grow again. 8 figures.

Johnson, C.R.

1983-04-14T23:59:59.000Z

466

anchorage independent growth: Topics by E-print Network  

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

Hinton, Geoffrey E. 42 GEOLOG is an independent and privately owned oilfield services company with a strong track record of growth and international Specialized in Surface...

467

androgen independent growth: Topics by E-print Network  

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

Hinton, Geoffrey E. 31 GEOLOG is an independent and privately owned oilfield services company with a strong track record of growth and international Specialized in Surface...

468

Characterizing partition functions of the vertex model by rank growth  

E-Print Network [OSTI]

We characterize which graph invariants are partition functions of a vertex model over the complex numbers, in terms of the rank growth of associated `connection matrices'.

Alexander Schrijver

2012-11-15T23:59:59.000Z

469

Hydrology, environment Four remarks on the growth of channel networks  

E-Print Network [OSTI]

Hydrology, environment Four remarks on the growth of channel networks Quatre remarques sur la online xxx Presented by Ghislain de Marsily Keywords: Geomorphology Hydrology River network Mots cle

Kudrolli, Arshad

470

Recent Trends in Car Usage in Advanced Economies - Slower Growth...  

Open Energy Info (EERE)

Trends in Car Usage in Advanced Economies - Slower Growth Ahead? Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Recent Trends in Car Usage in Advanced Economies -...

471

affect yeast growth: Topics by E-print Network  

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

were carried out under fixed dilution rate after batch growth in YPD as described... Pir, Pinar; Gutteridge, Alex; Wu, Jian; Rash, Bharat; Kell, Douglas B; Zhang, Nianshu;...

472

Indonesia-Strengthening Planning Capacity for Low Carbon Growth...  

Open Energy Info (EERE)

Growth in Developing Asia" Retrieved from "http:en.openei.orgwindex.php?titleIndonesia-StrengtheningPlanningCapacityforLowCarbonGrowthinDevelopingAsia&oldid70041...

473

Essays on Financial Liberalisation, Financial Crises and Economic Growth.  

E-Print Network [OSTI]

??This thesis investigates the impact of financial liberalisation policies on finance-growth relationship and financial crises. Analysis of recent trends and economic performance of financially developed (more)

Atiq, Zeeshan

2014-01-01T23:59:59.000Z

474

Finacial liberalisation and sustainable economic growth in ECOWAS countries .  

E-Print Network [OSTI]

??The thesis examines the comprehensive relationship between all aspects of financial liberalisation and economic growth in three countries from the Economic Community of West African (more)

Owusu, Erasmus Labri

2012-01-01T23:59:59.000Z

475

Low-Carbon Growth Country Studies: Getting Started Experience...  

Open Energy Info (EERE)

RE and EE targets and low carbon growth. India's relatively low carbon economy reflects energy intensity 20 percent below world averages and per capita emissions among the lowest...

476

ascites tumor growth: Topics by E-print Network  

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

circular objects revealing required features, such as the velocity of the growth and fractal behavior of their contours, is presented. It enables to reproduce some of the recent...

477

adaptive growth strategy: Topics by E-print Network  

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

effective ionization and dielectric relaxation times scales 3 146 National Industrial Hemp Strategy ii March 2008Executive Summary Growth of the Canadian Industrial Hemp Sector...

478

altered growth differentiation: Topics by E-print Network  

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

although they did possess fewer eggs. Daphnia responses to chemicals from either roach or Elodea Burks, Romi 7 MATURE TLINEAGE LEUKEMIA WITH GROWTH FACTOR-INDUCED...

479

apcam mediates growth: Topics by E-print Network  

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

of piscivore-mediated habitat use on growth, diet and zooplankton consumption of roach: an Biology and Medicine Websites Summary: Effects of piscivore-mediated habitat use...

480

Thermodynamic and kinetic control of the lateral Si wire growth  

SciTech Connect (OSTI)

Reproducible lateral Si wire growth has been realized on the Si (100) surface. In this paper, we present experimental evidence showing the unique role that carbon plays in initiating lateral growth of Si wires on a Si (100) substrate. Once initiated in the presence of ?5 ML of C, lateral growth can be achieved in the range of temperatures, T?=?450650?C, and further controlled by the interplay of the flux of incoming Si atoms with the size and areal density of Au droplets. Critical thermodynamic and kinetic aspects of the growth are discussed in detail.

Dedyulin, Sergey N., E-mail: sdedyuli@uwo.ca; Goncharova, Lyudmila V. [Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond St., London, Ontario N6A 3K7 (Canada)

2014-03-24T23:59:59.000Z

Note: This page contains sample records for the topic "moderate population growth" 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 Better Understanding Dilute Void Growth in Ductile Metals  

E-Print Network [OSTI]

and growth of damage in a dual-phase steel observed by X-rayWeck et al. , 2007], dual-phase steel [Maire et al. , 2008],

Kostka, Tim

2010-01-01T23:59:59.000Z

482

Persistent hair growth during treatment with the EGFR inhibitor erlotinib  

E-Print Network [OSTI]

factor receptor in the differentiation of the hair follicleand normal hair development. Am J Pathol. 1997;150:1959-Persistent hair growth during treatment with the EGFR

Alexandrescu, Doru T; Kauffman, C Lisa; Dasanu, Constantin A

2009-01-01T23:59:59.000Z

483

A Survey of the U.S. ESCO Industry: Market Growth and Development from 2000 to 2006  

E-Print Network [OSTI]

renewable energy programs. ESCOs project continued growth,renewable energy programs. ESCOs are projecting continued growth,

Hopper, Nicole; Goldman, Charles; Gilligan, Donald; Singer, Terry E.; Birr, Dave

2007-01-01T23:59:59.000Z

484

Population balance modeling -an application in particle technology  

E-Print Network [OSTI]

Preparation Feed #2 Preparation . . . Feed #N Preparation · Vaporization · Pumping/Compression · Addition Formation/Growth Control · Agglomeration Control · Cooling/Heating · Wall Scale Removal © R.B. Diemer, Jr #2 Preparation . . . Feed #N Preparation Treatment Reagents Waste · Absorption · Adsorption Vent

Ehrman, Sheryl H.

485

Respiratory health effects of the indoor environment in a population of Dutch children  

SciTech Connect (OSTI)

The effect of indoor exposure to nitrogen dioxide on respiratory health was studied over a period of 2 yr in a population of nonsmoking Dutch children 6 to 12 yr of age. Lung function was measured at the schools, and information on respiratory symptoms was collected from a self-administered questionnaire completed by the parents of the children. Nitrogen dioxide was measured in the homes of all children with Palmes' diffusion tubes. In addition, information on smoking and dampness in the home was collected by questionnaire. There was no relationship between exposure to nitrogen dioxide in the home and respiratory symptoms. Respiratory symptoms were found to be associated with exposure to tobacco smoke and home dampness. There was a weak, negative association between maximal midexpiratory flow (MMEF) and exposure to nitrogen dioxide. FEV1, peak expiratory flow, and MMEF were all negatively associated with exposure to tobacco smoke. Home dampness was not associated with pulmonary function. Lung function growth, measured over a period of 2 yr, was not consistently associated with any of the indoor exposure variables. The development of respiratory symptoms over time was not associated with indoor exposure to nitrogen dioxide. There was a significant association between exposure to environmental tobacco smoke in the home and the development of wheeze. There was also a significant association between home dampness and the development of cough.

Dijkstra, L.; Houthuijs, D.; Brunekreef, B.; Akkerman, I.; Boleij, J.S. (Univ. of Wageningen (Netherlands))

1990-11-01T23:59:59.000Z

486

Compensatory mechanisms in fish populations: Literature reviews: Volume 3, A critical review of mathematical models for fish compensation mechanisms: Final report  

SciTech Connect (OSTI)

A critical review of population dynamics models was performed to describe previous models and to recommend approaches for future research on compensation in fish population. The models were first classified into five categories, i.e., theoretical, stock-recruitment, biomass (bioenergetic), population (number), and life cycle functions. Models in each category were then reviewed for their formulations, assumptions, limitations, and performances. A majority of the models were found to have been formulated to calculate parameters that could not be directly measured. Models developed to evaluate entrainment and impingement impacts were often applied without validation against observed data. To advance the scientific understanding of fish compensation mechanisms, future research should include complimentary studies in both model development and empirical observation. Modeling will provide a theoretical framework to integrate individual compensation mechanisms and to relate them to population level responses. Empirical observation, on the other hand, will furnish data to verify the theory. The fish compensation model should use a cohort representation that allows the incorporation of the relationships between life cycle processes and environmental conditions. Growth and mortality of fish in early life stages should be related to weather, hydrology, temperature and food in addition to competition and predation. Environmental data with an inherent stochasticity should be used as input to produce verifiable real time variations in year class strength.

Chen, C.W.

1987-05-01T23:59:59.000Z

487

Metabolic indices for growth: endocrine profile of steers on different nutritional and growth regulation regimes  

E-Print Network [OSTI]

IN PRELIMINARY MODELS. . Page 45 TABLE 15. SAMPLING DAYS FOR ENDOCRINE AND METABOLITE FACTORS USED IN FINAL MODELS PRODUCED FROM BACKWARD STEPWISE REGRESSION. . . . . . . . . . . . . . . . . . . . . 46 TABLE 16. FINAL LINEAR PREDICTION MODELS... tends to reflect plasma glucose level and may be elevated when growth regulators alter plasma glucose (Sharp and Dyer, 1970), but this response is also inconsistent with changes in insulin independent of glucose reported by Olsen et al. (1977...

Reinhardt, Christopher Dean

1991-01-01T23:59:59.000Z

488

Proceedings: Workshop on Compensatory Mechanisms in Fish Populations  

SciTech Connect (OSTI)

This report contains a summary of an EPRI workshop on compensatory mechanisms in fish populations, held in February 1982 in Palo Alto, California. The participants recommended two broad conceptual frameworks for the development of a research program and identified major research activities. These plans were later integrated into a final research program, which is included here.

None

1982-12-01T23:59:59.000Z

489

Mechanisms of Compensatory Response of Fish Populations: Workshop Proceedings  

SciTech Connect (OSTI)

How completely do fish populations naturally compensate for mortalities associated with power generation? This summary of three EPRI planning workshops suggests the research needed to develop tools for quantifying those natural processes in support of utility site selection and permit efforts.

None

1987-06-01T23:59:59.000Z

490

Public Health Genomics Population Health Sciences 650 Section 023  

E-Print Network [OSTI]

Public Health Genomics Population Health Sciences 650 Section 023 Summer 2009, 07/20/09 ­ 07: Public health genomics is a new discipline that uses knowledge gained from genetic and molecular research and the social sciences, and much more. This course will provide 1) an introduction to public health genomics, 2

Sheridan, Jennifer

491

Poor Nutrition and Health Concerns in Low Income Population  

E-Print Network [OSTI]

and foodborne illness, reduced indigent health care costs and improved quality of life. Contact: Dean McPoor Nutrition and Health Concerns in Low Income Population An estimated one out of every six in 1995 as a cooperative endeavor among the Texas A&M AgriLife Extension Service, Texas Health and Human

492

Dung survey bias and elephant population estimates in southern Mozambique  

E-Print Network [OSTI]

Dung survey bias and elephant population estimates in southern Mozambique Pieter I. Olivier, Sam M and extracted an age structure from boli diameters for the elephants living in the Maputo Elephant Reserve. Our,672 dung piles encountered on 204 line-transects. The reserve had at least 311 (95% CI: 198­490) elephants

Pretoria, University of

493

CHAPTER XVIII ENVffiONMENTAL FACTORS AFFECTING OYSTER POPULATIONS  

E-Print Network [OSTI]

thrive above the bottom attached t~ rocks and underwater structures, branches and trunks of fallen trees populations are important to man as a source of FISHERY BULLETIN: VOLUME 64, CHAPTER XVIII 7aa-.aal () sa 26 by the greatest number of individuals which can ~row to maturity subject to the conditions which surround them

494

Heroin Users in Australia: Population Trends C. Yalin Kaya1  

E-Print Network [OSTI]

Heroin Users in Australia: Population Trends C. Yalçin Kaya1 , Yuliya Tugai2 , Jerzy A. Filar3 Australia (UniSA), Mawson Lakes, S. A. 5095 Australia. Contact E-mail: yalcin.kaya@unisa.edu.au . 2 Research Australia (DASC, SA). 6 Manager, Evidence-Based Practice Unit, DASC, SA. 7 Senior Evaluation Officer, DASC

Kaya, Yalcin

495

Exploring the faint source population at 15.7 GHz  

E-Print Network [OSTI]

-expanding Euclidean Universe populated with non-evolving sources with number density n and luminosity L contains N = 4pind3/3 sources out to distance d. As the flux density (S) of each source is given by S = L/4pid2, the number of sources brighter than flux density...

Whittam, Imogen Helen

2014-10-07T23:59:59.000Z

496

PHYLOGENOMICS AND POPULATION GENOMICS: MODDELS, ALGORITHMS, AND ANALYTICAL TOOLS  

E-Print Network [OSTI]

PHYLOGENOMICS AND POPULATION GENOMICS: MODDELS, ALGORITHMS, AND ANALYTICAL TOOLS LUAY K. NAKHLEH on relationships among species themselves. The two fields share a number of overlapping tools, as well as similar analytical tools for assessing properties of the algorithms. We are pleased to present five papers

Rosenberg, Noah

497

Associative Learning Enhances Population Coding by Inverting Interneuronal Correlation Patterns  

E-Print Network [OSTI]

in population co- des is unknown. Because the pattern of firing rate correlations between neurons--an emergent neurons. One such property that learning could target is the correlation between neural firing rates circuits contain neurons with heterogeneous tuning functions. In s

Gentner, Timothy

498

MOST POPULATION III SUPERNOVAE ARE DUDS Robert L. Kurucz  

E-Print Network [OSTI]

the ``dark matter'' halo. Subject headings: supernovae --- dark matter Introduction Most of the physics predictions about dud supernovae and about ``dark matter''. Population III stars, dud supernovae, supernovae and primordial gas into a globular cluster. Model atmosphere calculations for oxygen dwarfs show that water

Kurucz, Robert L.

499

Fluctuations in lemming populations in north Yukon, Canada, 20072010  

E-Print Network [OSTI]

severe for population persistence on the coastal plain along the north coast of the Yukon. Further work are so pronounced on the arctic coastal plain of Alaska and virtually absent on the coastal plain. Il se peut que les conditions de neige en hiver soient trop sévères pour la persistance des

Krebs, Charles J.

500

Autonomous Robot Navigation in Highly Populated Pedestrian Zones  

E-Print Network [OSTI]

Autonomous Robot Navigation in Highly Populated Pedestrian Zones Rainer K¨ummerle Department@informatik.uni-freiburg.de Abstract In the past, there has been a tremendous progress in the area of autonomous robot naviga- tion for autonomous robots as they are rather unstructured and dynamic. In this paper, we present a navigation system

Teschner, Matthias