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1

A Multidisciplinary Approach To Detect Active Pathways For Magma Migration  

Open Energy Info (EERE)

Multidisciplinary Approach To Detect Active Pathways For Magma Migration Multidisciplinary Approach To Detect Active Pathways For Magma Migration And Eruption At Mt Etna (Sicily, Italy) Before The 2001 And 2002-2003 Eruptions Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Multidisciplinary Approach To Detect Active Pathways For Magma Migration And Eruption At Mt Etna (Sicily, Italy) Before The 2001 And 2002-2003 Eruptions Details Activities (0) Areas (0) Regions (0) Abstract: Two strong flank eruptions occurred in July-August 2001 and from late October 2002 to late January 2003 at Mt. Etna volcano. The two eruptions mainly involved the upper southern flank of the volcano, a particularly active area during the last 30 years, damaging several tourist facilities and threatening some villages. The composite eruptive activity

2

Hydrocarbon accumulation on rifted Continental Margin - examples of oil migration pathways, west African salt basins  

SciTech Connect

Examination of the oil fields in the Gabon, Lower Congo, and Cuanza basins allows modeling of oil migration and a more accurate ranking of prospects using geologic risk factors. Oil accumulations in these basins are in strata deposited during Cretaceous rift and drift phases, thus providing a diversity of geologic settings to examine. Oil accumulations in rift deposits are located on large faulted anticlines or in truncated units atop horst features. Many of these oil fields were sourced from adjacent organic shales along short direct migration paths. In Areas where source rock is more remote to fields or to prospective structures, faulting and continuity of reservoir rock are important to the migration of hydrocarbons. Because Aptian salts separate rift-related deposits from those of the drift stage, salt evacuation and faulting of the salt residuum are necessary for oil migration from the pre-salt sequences into the post-salt section. Oil migration within post-salt strata is complicated by the presence of salt walls and faulted carbonate platforms. Hydrocarbon shows in wells drilled throughout this area provide critical data for evaluating hydrocarbon migration pathways. Such evaluation in combination with modeling and mapping of the organic-rich units, maturation, reservoir facies, structural configurations, and seals in existing fields allows assessment of different plays. Based on this information, new play types and prospective structures can be ranked with respect to geologic risk.

Blackwelder, B.W.

1989-03-01T23:59:59.000Z

3

Reverse time migration in tilted transversely isotropic media  

SciTech Connect

This paper presents a reverse time migration (RTM) method for the migration of shot records in tilted transversely isotropic (TTI) media. It is based on the tilted TI acoustic wave equation that was derived from the dispersion relation. The RTM is a full depth migration allowing for velocity to vary laterally as well as vertically and has no dip limitations. The wave equation is solved by a tenth-order finite difference scheme. Using 2D numerical models, we demonstrate that ignoring the tilt angle will introduce both lateral and vertical shifts in imaging. The shifts can be larger than 0.5 wavelength in the vertical direction and 1.5 wavelength in the lateral direction.

Zhang, Linbing; Rector III, James W.; Hoversten, G. Michael

2004-07-01T23:59:59.000Z

4

Incised valley filling deposits: an important pathway system for long-distance hydrocarbon migration—a case study of the Fulaerji Oilfield in the Songliao Basin  

Science Journals Connector (OSTI)

In this paper, incised valley filling deposits, which formed an important pathway system for long-distance hydrocarbon migration, are discussed in detail...23...of the Cretaceous Yaojia Formation is the main hydr...

Renchen Xin; Hao Liu; Guifan Li

2009-09-01T23:59:59.000Z

5

Relationships among oil density, gross composition, and thermal maturity indicators in northeastern Williston basin oils and their significance for expulsion thresholds and migration pathways  

SciTech Connect

Oil density ({degree}API), gross composition, and biological market thermal maturity variations in northeastern Williston basin have stratigraphic and geographic significance controlled by migration pathways and source rock composition as it affects hydrocarbon generation and expulsion characteristics. When the depth and density of oil pools is compared to relationships predicted using the correlation between source rock thermal maturity and oil density, several different migration pathways can be inferred. Winnipegosis source oils indicate four paths. Most small pinnacle reef pools are sourced locally, but larger coalesced reefs contain oils migrated long distances through the Lower Member Winnipegosis Formation. Among oils that have migrated past Prairie salts, both locally sourced oils, like those on the flank of the Hummingbird Trough, and more mature, longer migrated oils in Saskatchewan Group reservoirs can be identified. Bakken oils have the longest migration pathways, controlled primarily by a lowstand shoreline sandstone on the eastern side of the basin. Lodgepole-sourced oils dominate Madison Group plays. Northwest of Steelman field, oil density increases primarily due to thermal maturity differences but also because of increasing biodegradation and water-washing that affect the western edge of the play trend. Along the margin of the Hummingbird Trough are a number of deep, medium-gravity pools whose oil compositions are entirely attributable to low thermal maturity and local migration pathways.

Osadetz, K.G.; Snowdon, L.R.; Brooks, P.W. (Geological Survey of Canada, Calgary, Alberta (Canada))

1991-06-01T23:59:59.000Z

6

3D Weak-Dispersion Reverse-Time Migration with a StereoModeling Method  

E-Print Network (OSTI)

The finite difference method has been widely used in seismic modeling and reverse time migration. However, it generally has two issues: large computational cost and numerical dispersion. Recently, a nearly-analytic discrete ...

Li, Jingshuang

2013-01-01T23:59:59.000Z

7

Method for identifying subsurface fluid migration and drainage pathways in and among oil and gas reservoirs using 3-D and 4-D seismic imaging  

DOE Patents (OSTI)

The invention utilizes 3-D and 4-D seismic surveys as a means of deriving information useful in petroleum exploration and reservoir management. The methods use both single seismic surveys (3-D) and multiple seismic surveys separated in time (4-D) of a region of interest to determine large scale migration pathways within sedimentary basins, and fine scale drainage structure and oil-water-gas regions within individual petroleum producing reservoirs. Such structure is identified using pattern recognition tools which define the regions of interest. The 4-D seismic data sets may be used for data completion for large scale structure where time intervals between surveys do not allow for dynamic evolution. The 4-D seismic data sets also may be used to find variations over time of small scale structure within individual reservoirs which may be used to identify petroleum drainage pathways, oil-water-gas regions and, hence, attractive drilling targets. After spatial orientation, and amplitude and frequency matching of the multiple seismic data sets, High Amplitude Event (HAE) regions consistent with the presence of petroleum are identified using seismic attribute analysis. High Amplitude Regions are grown and interconnected to establish plumbing networks on the large scale and reservoir structure on the small scale. Small scale variations over time between seismic surveys within individual reservoirs are identified and used to identify drainage patterns and bypassed petroleum to be recovered. The location of such drainage patterns and bypassed petroleum may be used to site wells.

Anderson, Roger N. (New York, NY); Boulanger, Albert (New York, NY); Bagdonas, Edward P. (Brookline, MA); Xu, Liqing (New Milford, NJ); He, Wei (New Milford, NJ)

1996-01-01T23:59:59.000Z

8

Method for identifying subsurface fluid migration and drainage pathways in and among oil and gas reservoirs using 3-D and 4-D seismic imaging  

DOE Patents (OSTI)

The invention utilizes 3-D and 4-D seismic surveys as a means of deriving information useful in petroleum exploration and reservoir management. The methods use both single seismic surveys (3-D) and multiple seismic surveys separated in time (4-D) of a region of interest to determine large scale migration pathways within sedimentary basins, and fine scale drainage structure and oil-water-gas regions within individual petroleum producing reservoirs. Such structure is identified using pattern recognition tools which define the regions of interest. The 4-D seismic data sets may be used for data completion for large scale structure where time intervals between surveys do not allow for dynamic evolution. The 4-D seismic data sets also may be used to find variations over time of small scale structure within individual reservoirs which may be used to identify petroleum drainage pathways, oil-water-gas regions and, hence, attractive drilling targets. After spatial orientation, and amplitude and frequency matching of the multiple seismic data sets, High Amplitude Event (HAE) regions consistent with the presence of petroleum are identified using seismic attribute analysis. High Amplitude Regions are grown and interconnected to establish plumbing networks on the large scale and reservoir structure on the small scale. Small scale variations over time between seismic surveys within individual reservoirs are identified and used to identify drainage patterns and bypassed petroleum to be recovered. The location of such drainage patterns and bypassed petroleum may be used to site wells. 22 figs.

Anderson, R.N.; Boulanger, A.; Bagdonas, E.P.; Xu, L.; He, W.

1996-12-17T23:59:59.000Z

9

CROSS SHORE SANDBAR MIGRATION PREDICTED BY A TIME DOMAIN BOUSSINESQ MODEL INCORPORATING  

E-Print Network (OSTI)

CROSS SHORE SANDBAR MIGRATION PREDICTED BY A TIME DOMAIN BOUSSINESQ MODEL INCORPORATING UNDERTOW Wen Long1 , James T. Kirby2 and T.-J. Hsu3 An existing Boussinesq wave model is modified and erosional cross-shore sediment transport processes. INTRODUCTION Long and Kirby (2003) have used Boussinesq

Kirby, James T.

10

Hyperacuity in time: a CNN model of a time-coding pathway of sound localization  

Science Journals Connector (OSTI)

This paper discusses a new cellular neural network model of the time-coding pathway of sound localization. The key feature of the model is lateral inhibition which is supposed to play crucial role in sound localization. The possible role of this inhibition ...

neural ARRAY(0x8475144) ACM Self-modifying machines (e.g.

1998-01-01T23:59:59.000Z

11

Method for migrating seismic data by using ray tracing in determining two way travel times  

SciTech Connect

A method is described for depth migrating ray traces before stacking comprising the steps of: receiving raw seismic data signals representing acoustic waves generated by a plurality of sources and detected by a plurality of receivers, each of said sources and said receivers having a surface position; generating a set of one way travel times for each surface position to all image points; storing said one way travel times; identifying a set of one way travel times from one source surface position to each of said image points; identifying a second set of one way travel times from one receiver surface position to each of said image points; calculating a two way travel time set to said image points by summing said set of one way travel times for said one source surface position and said second set of one way travel times for said one receiver surface position to each of said image points; mapping a seismic trace associated with a source and receiver combination represented by said two way travel time set; and displaying said map of said seismic trace associated with said source and receiver combination.

Wang, Sheinshion; Sinton, J.B.; Hanson, D.W.

1993-07-20T23:59:59.000Z

12

A residence-time-based transport approach for the groundwater pathway in performance assessment models  

Science Journals Connector (OSTI)

This paper presents the theoretical development and numerical implementation of a new modeling approach for representing the groundwater pathway in risk assessment or performance assessment model of a contaminant transport system. The model developed ... Keywords: Groundwater pathway, Mixing model, Performance assessment, Residence time distribution

Bruce A. Robinson; Shaoping Chu

2013-03-01T23:59:59.000Z

13

Unbiased computation of transition times by pathway recombination  

SciTech Connect

In many systems, the time scales of the microscopic dynamics and macroscopic dynamics of interest are separated by many orders of magnitude. Examples abound, for instance, nucleation, protein folding, and chemical reactions. For these systems, direct simulation of phase space trajectories does not efficiently determine most physical quantities of interest. The past decade has seen the advent of methods circumventing brute force simulation. For most dynamical quantities, these methods all share the drawback of systematical errors. We present a novel method for generating ensembles of phase space trajectories. By sampling small pieces of these trajectories in different phase space domains and piecing them together in a smart way using equilibrium properties, we obtain physical quantities such as transition times. This method does not have any systematical error and is very efficient; the computational effort to calculate the first passage time across a free energy barrier does not increase with the height of the barrier. The strength of the method is shown in the Ising model. Accurate measurements of nucleation times span almost ten orders of magnitude and reveal corrections to classical nucleation theory.

Kuipers, J. [Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, Utrecht 3584 CE (Netherlands); Barkema, G. T. [Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, Utrecht 3584 CE (Netherlands); Instituut-Lorentz for Theoretical Physics, Leiden University, Niels Bohrweg 2, Leiden 2333 CA (Netherlands)

2008-05-07T23:59:59.000Z

14

Timing is everything : along the fossil fuel transition pathway.  

SciTech Connect

People save for retirement throughout their career because it is virtually impossible to save all you'll need in retirement the year before you retire. Similarly, without installing incremental amounts of clean fossil, renewable or transformative energy technologies throughout the coming decades, a radical and immediate change will be near impossible the year before a policy goal is set to be in place. Therefore, our research question is,To meet our desired technical and policy goals, what are the factors that affect the rate we must install technology to achieve these goals in the coming decades?' Existing models do not include full regulatory constraints due to their often complex, and inflexible approaches to solve foroptimal' engineering instead ofrobust' and multidisciplinary solutions. This project outlines the theory and then develops an applied software tool to model the laboratory-to-market transition using the traditional technology readiness level (TRL) framework, but develops subsequent and a novel regulatory readiness level (RRL) and market readiness level (MRL). This tool uses the ideally-suited system dynamics framework to incorporate feedbacks and time delays. Future energy-economic-environment models, regardless of their programming platform, may adapt this software model component framework ormodule' to further vet the likelihood of new or innovative technology moving through the laboratory, regulatory and market space. The prototype analytical framework and tool, called the Technology, Regulatory and Market Readiness Level simulation model (TRMsim) illustrates the interaction between technology research, application, policy and market dynamics as they relate to a new or innovative technology moving from the theoretical stage to full market deployment. The initial results that illustrate the model's capabilities indicate for a hypothetical technology, that increasing the key driver behind each of the TRL, RRL and MRL components individually decreases the time required for the technology to progress through each component by 63, 68 and 64%, respectively. Therefore, under the current working assumptions, to decrease the time it may take for a technology to move from the conceptual stage to full scale market adoption one might consider expending additional effort to secure regulatory approval and reducing the uncertainty of the technology's demand in the marketplace.

Kobos, Peter Holmes; Walker, La Tonya Nicole; Malczynski, Leonard A.

2013-10-01T23:59:59.000Z

15

Focusing future exploration in mature basin: Maturation and migration models integrated with timing of major structural events in Illinois  

SciTech Connect

Exploration risk can be decreased by highgrading areas where the timing of structural events and maturation of source rocks are nearly coincident. Knowledge of migration fairways further aids in focusing exploration. Four burial-history models have been constructed to accommodate (1) a rift-fill sequence in excess of 24,000 ft, (2) a hypothetical Fairfield basin model, (3) a model using a deep well, and (4) a model on the Sparta shelf. These complex models, which use several variables including compaction, thermal conductivity, kerogen kinetics, and multiple unconformities, indicate a possibility for multiple hydrocarbon-generative events and show that linear geothermal gradients are ineffective in explaining maturation in Illinois. Periods of oil generation determined from the models can be compared with known timing of structural events to predict trapping potential. Depths to the oil phase-out zone are also significant. Exploration risk can be reduced in Illinois by using a simple migration model that uses the basal Upper Devonian Sylamore Sandstone in central and western Illinois as a migration conduit and the New Albany Group as a source. Other migration conduits in the basin are discussed including faults associated with structures and fracture systems such as the Wabash Valley fault system.

Oltz, D.F.; Crockett, J.E. (Illinois State Geological Survey, Champaign (USA))

1989-08-01T23:59:59.000Z

16

Surface wettability of plasma SiOx:H nanocoating-induced endothelial cells' migration and the associated FAK-Rho GTPases signalling pathways  

Science Journals Connector (OSTI)

...25 26 Surface wettability of plasma SiO x :H nanocoating-induced...single cells spreading on plasma-coated samples were randomly...observation. With a fixed view and focus, images at 0, 10, 20 and...inducing EC migration on the plasma SiO x :H surface. At first...

2012-01-01T23:59:59.000Z

17

Inhibition of fatty acid synthase suppresses U-2 OS cell invasion and migration via downregulating the activity of HER2/PI3K/AKT signaling pathway in vitro  

SciTech Connect

Highlights: •We investigate the relationship between FASN and HER2 or p-HER2 by IHC in OS tissues. •We construct FASN-specific RNAi plasmid. •Inhibiting FASN down-regulates HER2/PI3K/AKT cell signaling in U-2 OS. •Inhibiting FASN blocks U-2 OS cell invasion and migration. -- Abstract: FASN plays an important role in the malignant phenotype of various tumors. Our previous studies show that inhibition FASN could induce apoptosis and inhibit proliferation in human osteosarcoma (OS) cell in vivo and vitro. The aim in this study was to investigate the effect of inhibition FASN on the activity of HER2/PI3K/AKT axis and invasion and migration of OS cell. The expression of FASN, HER2 and p-HER2(Y1248) proteins was detected by immunohistochemistry in OS tissues from 24 patients with pulmonary metastatic disease, and the relationship between FASN and p-HER2 as well as HER2 was investigated. The results showed that there was a positive correlation between FASN and HER2 as well as p-HER2 protein expression. The U-2 OS cells were transfected with either the FASN specific RNAi plasmid or the negative control RNAi plasmid. FASN mRNA was measured by RT-PCR. Western blot assays was performed to examine the protein expression of FASN, HER2, p-HER2(Y1248), PI3K, Akt and p-Akt (Ser473). Migration and invasion of cells were investigated by wound healing and transwell invasion assays. The results showed that the activity of HER2/PI3K/AKT signaling pathway was suppressed by inhibiting FASN. Meanwhile, the U-2OS cells migration and invasion were also impaired by inhibiting the activity of FASN/HER2/PI3K/AKT. Our results indicated that inhibition of FASN suppresses OS cell invasion and migration via down-regulation of the “HER2/PI3K/AKT” axis in vitro. FASN blocker may be a new therapeutic strategy in OS management.

Wang, Tao Fang; Wang, Heng [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China); Peng, Ai Fen [Jiangxi University of Traditional Chinese Medicine, Jiangxi (China)] [Jiangxi University of Traditional Chinese Medicine, Jiangxi (China); Luo, Qing Feng [Department of Pathology, Cancer Hospital of Jiangxi Province, Jiangxi (China)] [Department of Pathology, Cancer Hospital of Jiangxi Province, Jiangxi (China); Liu, Zhi Li, E-mail: zgm7977@163.com [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China); Zhou, Rong Ping [Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Jiangxi (China); Gao, Song; Zhou, Yang; Chen, Wen Zhao [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)

2013-10-18T23:59:59.000Z

18

Control of Flowering Time: Interacting Pathways as a Basis for Diversity  

Science Journals Connector (OSTI)

...is often described in three interrelated sections. These are input...pathways that regulate particular processes (Roenneberg and Merrow...CAB2 during the night, a process regulated by the circadian...is involved in two opposite processes-activation of heading under...

Aidyn Mouradov; Frédéric Cremer; George Coupland

19

Waterfowl Migrations  

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

Waterfowl Migrations Waterfowl Migrations Nature Bulletin No. 615-A October 30, 1976 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation WATERFOWL MIGRATIONS Every autumn, McGinnis Slough -- a 315 acre sanctuary in our Palos preserves -- is visited by many thousands of waterfowl and provides some fascinating spectacles. Frequently, near sundown, flock after flock of ducks, coming from the north, set their wings and glide down upon the water. Meanwhile, other flocks are rising, circling, and then disappearing southwesterly toward the Illinois River Valley. Flocks of Canada geese, and sometimes a few whistling swans, also stop to rest and feed on this refuge. The annual migrations of vast numbers of waterfowl have always awed and mystified mankind. When the sky is full of ducks as far as we can see, or when we hear a distant honking and discover a great V of geese overhead, we wonder where they came from, where they go, and how they find their way so surely back and forth, each spring and fall.

20

Environmental Factors Influencing Spring Migration Chronology of Lesser Scaup (Aythya affinis).  

E-Print Network (OSTI)

??Weather likely affects the timing and rate of migration by waterfowl to their breeding grounds. I hypothesized that timing of migration by lesser scaup during… (more)

Finger, Taylor A

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Tracing The Largest Seasonal Migration on Earth  

E-Print Network (OSTI)

It is estimated that over 3.6 billion passengers are travelling during the Chinese Spring Festival travel season. They leave their working cities and return their hometowns to enjoy annual family time, and back to cities after the holiday. In this study, with the massive location-based data collected from millions of smartphone users, we propose a novel method to trace the migration flow and explore the migration patterns of Chinese people. From the temporal perspective, we explore the migration trend over time during a 34-days period, about half a month before and after the Spring Festival. From the spatial perspective, the migration directions and routes are estimated and quantified, and the migration flow is visualized. The spatial range of influence of developed regions could be reflected with the destinations of migration, the migration destinations and originations have obvious characteristic of geographical proximity.

Wang, Xianwen; Mao, Wenli; Hu, Zhigang; Gu, Li

2014-01-01T23:59:59.000Z

22

Climate-Sensitive Decisions and Time Frames: A Cross-Sectoral Analysis of Information Pathways in the Carolinas  

Science Journals Connector (OSTI)

This paper analyzes the information dissemination pathways that support climate-sensitive decisions in North and South Carolina. The study draws from over 100 online questionnaires and follow-up interviews with leaders in the forestry, natural ...

Kirsten Lackstrom; Nathan P. Kettle; Benjamin Haywood; Kirstin Dow

2014-04-01T23:59:59.000Z

23

Secondary migration of oil: Experiments supporting efficient movement of separate, buoyant oil phase along limited conduits  

SciTech Connect

Experimental data suggest that the secondary migration of oil in porous, permeable sediments probably occurs, in most circumstances, along restricted pathways or conduits. These conduits are formed after the oil has reached a high enough saturation in the reservoir rock for the buoyancy of the oil to overcome the capillary pressure in the pore throats. The oil probably moves vertically until it reaches the top of the reservoir interval. The oil then moves updip along the top of the reservoir interval via a narrow, restricted pathway until reaches the trap and begins to accumulate. Dependeing on the area of the original oil saturation at the bottom of the reservoir unit and the structural geometry, multiple conduits may form, along which the oil may flow. Because these conduits are limited in diameter, the amount of oil lost during secondary migration could be limited to the irreducible oil saturation left behind in the conduit, provided no small-scale traps exist along the path to the main trap. Rates of oil movement are very rapid in a geologic context, suggesting that the timing of primary migration is a good indicator of the timing of secondary migration. 2 figs.

Dembicki, H. Jr.; Anderson, M.J. (Marathon Oil Co. Exploration and Production Technology, Littleton, CO (USA))

1989-08-01T23:59:59.000Z

24

Migration of Birds  

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

Birds Birds Nature Bulletin No. 146 March 13, 1948 Forest Preserve District of Cook County William N, Erickson, President Roberts Mann, Supt. of Conservation MIGRATION OF BIRDS High in the sky, wild geese are honking as they return to their nesting ground in the far north. Presently, our summer songbirds will appear and the ponds and marshes be repopulated by ducks and shore birds. Some birds, like the juncos and tree sparrows, resident here all winter, will leave for Canada or our northern states, in May, great flocks of warblers will arrive, tarry briefly, and pass on, not to be seen again until they migrate southward in autumn. The spectacular annual journeys of many kinds of birds, and their homing "instincts", have been a source of wonder since ancient times. In recent years, large-scale marking with small aluminum identification bands upon their legs, has yielded much information about birds their migration routes, speed of travel, summer and winter homes, length of life and life histories.

25

EMSL - cation migration  

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

cation-migration en Diffusional Motion of Redox Centers in Carbonate Electrolytes . http:www.emsl.pnl.govemslwebpublicationsdiffusional-motion-redox-centers-carbonate-electrol...

26

The C. elegans heterochronic pathway controls the timing of NAB/EGR-mediated terminal differentiation and the onset of adulthood  

E-Print Network (OSTI)

Most animals pass through a series of juvenile stages on their way from embryo to adult. These stages represent periods of time in which stage-specific developmental processes occur. At the end of development, the organism ...

Harris, David T. (David Taylor)

2011-01-01T23:59:59.000Z

27

Double Time: Facing The Future in Migration’s Past  

E-Print Network (OSTI)

in Fragments and The Swimming Pool Library. ” Literature ands pre-AIDS novel The Swimming-Pool Library suggests thewe see Sonia in the swimming pool, the operation scar on her

Duncan, Derek

2011-01-01T23:59:59.000Z

28

Enhanced migration of seismic data  

SciTech Connect

The so-called enhanced migration which uses diffraction tomography as the repair tool for correction of amplitudes (reflection coefficients) of migrated sections is discussed. As with any linearized procedure, diffraction tomography requires knowledge of the initial model. It is suggested that the initial model is taken as the migrated image. It will be demonstrated that diffraction tomography applied to the data residuals improves the amplitudes of the migrated images. Migration is redefined as the reconstruction of the wavefront sets of distributions (reflection interfaces), and the inversion process as tomographic correction of migrated images.

Carrion, P.M. (PPPG/UFBA, Instituto de Geociencias, Rua Gaetano Moura 123, Federacao, 40.210 Salvador, Bahia (BR))

1990-10-01T23:59:59.000Z

29

Global Migration and Regionalization, 1840-1940  

E-Print Network (OSTI)

arrival statistics in the transatlantic migrations. I haveestimate. For the transatlantic numbers, Ferenczi andof mass migration as a transatlantic age. When migrations

McKeown, Adam

2007-01-01T23:59:59.000Z

30

Nepal Migration Year Book 2011 Migration Year Book  

E-Print Network (OSTI)

Nepal Migration Year Book 2011 1 #12;Nepal Migration Year Book 2011 NIDS NCCR North-South #12;Book Nepal Migration Year Book 2011 Publishers Nepal Institute of Development Studies (NIDS) G.P.O. Box: 7647, Kathmandu, Nepal Email: nids@mail.com.np Web: www.nids.org.np National Centre of Competence in Research

Richner, Heinz

31

International migration within Latin America  

E-Print Network (OSTI)

International migration within Latin America ·Mostly labor circulation flows ·Industrial and urban;Example of International migration: Mexicans to US ·1920s revolution and post- revolution chaos in Mexico

Lopez-Carr, David

32

Method of migrating seismic records  

DOE Patents (OSTI)

The present invention provides a method of migrating seismic records that retains the information in the seismic records and allows migration with significant reductions in computing cost. The present invention comprises phase encoding seismic records and combining the encoded seismic records before migration. Phase encoding can minimize the effect of unwanted cross terms while still allowing significant reductions in the cost to migrate a number of seismic records.

Ober, Curtis C. (Las Lunas, NM); Romero, Louis A. (Albuquerque, NM); Ghiglia, Dennis C. (Longmont, CO)

2000-01-01T23:59:59.000Z

33

Seismic velocity estimation from time migration  

E-Print Network (OSTI)

Seismic images . . . . . . . . . . . . . . . . .Algorithms producing the seismic velocities from thethe Dix velocities and the true seismic velocities in 2D . .

Cameron, Maria Kourkina

2007-01-01T23:59:59.000Z

34

Caged phosphopeptides and phosphoproteins : probes to dissect the role of phosphorylation in complex signaling pathways  

E-Print Network (OSTI)

Protein phosphorylation is a central regulatory mechanism in signal transduction pathways and cellular migration. Current genetic strategies for the study of phosphorylation, including gene knockout and point mutation, are ...

Vogel, Elizabeth Maura

2007-01-01T23:59:59.000Z

35

Can using a global perspective help control migration? : Ecuador and Spain's Proyecto Codesarrollo Canńar-Murcia  

E-Print Network (OSTI)

process? Did you receive any help in the reintegrationUsing a Global Perspective Help Control Migration? Ecuadortheir time and hospitality to help me with my research while

Velasquez, Christina L.

2010-01-01T23:59:59.000Z

36

Monitoring and Evaluation of Smolt Migration in the Columbia Basin, Volume XIV; Evaluation of 2006 Prediction of the Run-Timing of Wild and Hatchery-Reared Salmon and Steelhead at Rock Island, Lower Granite, McNary, John Day and Bonneville Dams using Program Real Time, Technical Report 2006.  

SciTech Connect

Program RealTime provided monitoring and forecasting of the 2006 inseason outmigrations via the internet for 32 PIT-tagged stocks of wild ESU chinook salmon and steelhead to Lower Granite and/or McNary dams, one PIT-tagged hatchery-reared ESU of sockeye salmon to Lower Granite Dam, and 20 passage-indexed runs-at-large, five each to Rock Island, McNary, John Day, and Bonneville Dams. Twenty-four stocks are of wild yearling chinook salmon which were captured, PIT-tagged, and released at sites above Lower Granite Dam in 2006, and have at least one year's historical migration data previous to the 2006 migration. These stocks originate in drainages of the Salmon, Grande Ronde and Clearwater Rivers, all tributaries to the Snake River, and are subsequently detected through the tag identification and monitored at Lower Granite Dam. In addition, seven wild PIT-tagged runs-at-large of Snake or Upper Columbia River ESU salmon and steelhead were monitored at McNary Dam. Three wild PIT-tagged runs-at-large were monitored at Lower Granite Dam, consisting of the yearling and subyearling chinook salmon and the steelhead trout runs. The hatchery-reared PIT-tagged sockeye salmon stock from Redfish Lake was monitored outmigrating through Lower Granite Dam. Passage-indexed stocks (stocks monitored by FPC passage indices) included combined wild and hatchery runs-at-large of subyearling and yearling chinook, coho, and sockeye salmon, and steelhead trout forecasted to Rock Island, McNary, John Day, and Bonneville Dams.

Griswold, Jim

2007-01-01T23:59:59.000Z

37

Monitoring and Evaluation of Smolt Migration in the Columbia Basin : Volume XV : Evaluation of the 2007 Predictions of the Run-Timing of Wild and Hatchery-Reared Salmon and Steelhead Smolts to Rock Island, Lower Granite, McNary, John Day, and Bonneville Dams using Program RealTime.  

SciTech Connect

Program RealTime provided monitoring and forecasting of the 2007 inseason outmigrations via the internet for 26 PIT-tagged stocks of wild ESU Chinook salmon and steelhead to Lower Granite and/or McNary dams, one PIT-tagged hatchery-reared ESU of sockeye salmon to Lower Granite Dam, one PIT-tagged wild stock of sockeye salmon to McNary Dam, and 20 passage-indexed runs-at-large, five each to Rock Island, McNary, John Day, and Bonneville dams. Nineteen stocks are of wild yearling Chinook salmon which were captured, PIT-tagged, and released at sites above Lower Granite Dam in 2007 and have at least one year's historical migration data previous to the 2007 migration. These stocks originate in 19 tributaries of the Salmon, Grande Ronde and Clearwater Rivers, all tributaries to the Snake River, and are subsequently detected through tag identification and monitored at Lower Granite Dam. Seven wild PIT-tagged runs-at-large of Snake or Upper Columbia River ESU salmon and steelhead were monitored at McNary Dam. Three wild PIT-tagged runs-at-large were monitored at Lower Granite Dam, consisting of the yearling and subyearling Chinook salmon and the steelhead runs. The hatchery-reared PIT-tagged sockeye salmon stock from Redfish Lake was monitored outmigrating through Lower Granite Dam. Passage-indexed stocks (stocks monitored by FPC passage indices) included combined wild and hatchery runs-at-large of subyearling and yearling Chinook, coho, and sockeye salmon, and steelhead forecasted to Rock Island, McNary, John Day, and Bonneville dams.

Griswold, Jim; Townsend, Richard L.; Skalski, John R.

2008-12-01T23:59:59.000Z

38

Career Pathways | Department of Energy  

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

Career Career Pathways Career Pathways The Energy/National Nuclear Security Administration (NNSA) Career Pathways Program is an innovative employment program targeting students and recent college graduates. If you are seeking an entry-level federal job or a federal internship, then check out our various opportunities! Intern Program The Pathways intern program allows students taking at least a half-time course load in an accredited high school, home schooling program, technical school, vocational school, two- or four- year college or university, or graduate or professional school to be part of a cooperative-learning environment. The program offers flexible work schedules, competitive pay, and the ability to gain experience while still completing your academic pursuits.

39

cation migration | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 °C. Abstract: The purpose of this study was to determine the solubility of...

40

Rural migration in southern Nevada  

SciTech Connect

This study reviews the history of migration in two rural counties in Southern Nevada. It is part of a larger study about the impact of a proposed high-level nuclear waste repository on in- and out-migration patterns in the state. The historical record suggests a boom and bust economic cycle has predominated in the region for the past century creating conditions that should be taken into account by decision makers when ascertaining the long-term impacts of the proposed repository.

Mosser, D.; Soden, D.L.

1993-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Undocumented Migration in the USA and Germany  

E-Print Network (OSTI)

Undocumented Migration in the USA and Germany: An AnalysisUndocumented Migration in the USA and Germany. An Analysismore restricted than in the USA. To my knowledge, there is

Stobbe, Holk

2000-01-01T23:59:59.000Z

42

Gradient biomaterials and their influences on cell migration  

Science Journals Connector (OSTI)

...varying the diffusion time, gas type, humidity and temperature...and directs cell migration. Hale et al. designed a polyacrylamide...polyethylene prepared in a shielded gas plasma. Colloids Surf. B Biointerfaces...14712598.2.8.805 ) 149 Hale, N. A. , Yang, Y., Rajagopalan...

2012-01-01T23:59:59.000Z

43

LATERAL LANDFILL GAS MIGRATION: CHARACTERIZATION AND  

E-Print Network (OSTI)

LATERAL LANDFILL GAS MIGRATION: CHARACTERIZATION AND PRELIMINARY MODELING RESULTS O.BOUR*, E,UniversitéLaval, Sainte-Foy, Canada SUMMARY: Lateral landfill gas migration occurs in the surroundings of a MSW landfill complementary physical measures were used to build a conceptual model of lateral landfill gas migration

Boyer, Edmond

44

MIGRATION DES JOINTS DE GRAINS LA MIGRATION DES JOINTS INTERGRANULAIRES  

E-Print Network (OSTI)

(influence de la force motrice, de la température, de l'orientation, de la présence d'éléments étrangers produise sponta- nément, il faut qu'il existe une force motrice, c'est-à-dire que le déplacement du joint accessibles. Très schématiquement, on pourra poser entre la vitesse de migration v et la force motrice F une

Boyer, Edmond

45

Migration of Bisphenol A (BPA) from Epoxy Can Coatings to Jalapeńo Peppers and an Acid Food Simulant  

Science Journals Connector (OSTI)

Migration of Bisphenol A (BPA) from Epoxy Can Coatings to Jalapeńo Peppers and an Acid Food Simulant ... Effects of heat processing, storage time, and temperature on migration of bisphenol A (BPA) from an epoxy type can coating to an acid food simulant and jalapeńo peppers were determined. ... An effect of storage time on migration of BPA during the first 40 days at 25 °C was observed. ...

Elvia M. Munguia-Lopez; Elizabeth Peralta; Alberto Gonzalez-Leon; Claudia Vargas-Requena; Herlinda Soto-Valdez

2002-11-06T23:59:59.000Z

46

Scattering and; Delay, Scale, and Sum Migration  

SciTech Connect

How do we see? What is the mechanism? Consider standing in an open field on a clear sunny day. In the field are a yellow dog and a blue ball. From a wave-based remote sensing point of view the sun is a source of radiation. It is a broadband electromagnetic source which, for the purposes of this introduction, only the visible spectrum is considered (approximately 390 to 750 nanometers or 400 to 769 TeraHertz). The source emits an incident field into the known background environment which, for this example, is free space. The incident field propagates until it strikes an object or target, either the yellow dog or the blue ball. The interaction of the incident field with an object results in a scattered field. The scattered field arises from a mis-match between the background refractive index, considered to be unity, and the scattering object refractive index ('yellow' for the case of the dog, and 'blue' for the ball). This is also known as an impedance mis-match. The scattering objects are referred to as secondary sources of radiation, that radiation being the scattered field which propagates until it is measured by the two receivers known as 'eyes'. The eyes focus the measured scattered field to form images which are processed by the 'wetware' of the brain for detection, identification, and localization. When time series representations of the measured scattered field are available, the image forming focusing process can be mathematically modeled by delayed, scaled, and summed migration. This concept of optical propagation, scattering, and focusing have one-to-one equivalents in the acoustic realm. This document is intended to present the basic concepts of scalar scattering and migration used in wide band wave-based remote sensing and imaging. The terms beamforming and (delayed, scaled, and summed) migration are used interchangeably but are to be distinguished from the narrow band (frequency domain) beamforming to determine the direction of arrival of a signal, and seismic migration in which wide band time series are shifted but not to form images per se. Section 3 presents a mostly graphically-based motivation and summary of delay, scale, and sum beamforming. The model for incident field propagation in free space is derived in Section 4 under specific assumptions. General object scattering is derived in Section 5 and simplified under the Born approximation in Section 6. The model of this section serves as the basis in the derivation of time-domain migration. The Foldy-Lax, full point scatterer scattering, method is derived in Section 7. With the previous forward models in hand, delay, scale, and sum beamforming is derived in Section 8. Finally, proof-of-principle experiments are present in Section 9.

Lehman, S K

2011-07-06T23:59:59.000Z

47

Pathway and Resource Overview  

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

Pathway and Resource Overview Pathway and Resource Overview Delivering Renewable Hydrogen Workshop - A Focus on Near-Term Applications Mark F. Ruth November 16, 2009 Palm Springs, CA NREL/PR-6A1-47108 National Renewable Energy Laboratory Innovation for Our Energy Future Definition and Presentation Outline Hydrogen pathway analysis is analysis of the total levelized cost (including return on investment), well-to- wheels (WTW) energy use, and WTW emissions for hydrogen production, delivery, and distribution pathways. This presentation focuses on * Pathway analyses using the Macro-System Model (MSM) * Resource and pathway analysis using the Hydrogen Demand and Resource Analysis Tool (HyDRA) * Status of water-electrolysis technology

48

Hydrogen Pathway Cost Distributions  

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

Pathway Cost Distributions Pathway Cost Distributions Jim Uihlein Fuel Pathways Integration Tech Team January 25, 2006 2 Outline * Pathway-Independent Cost Goal * Cost Distribution Objective * Overview * H2A Influence * Approach * Implementation * Results * Discussion Process * Summary 3 Hydrogen R&D Cost Goal * Goal is pathway independent * Developed through a well defined, transparent process * Consumer fueling costs are equivalent or less on a cents per mile basis * Evolved gasoline ICE and gasoline-electric hybrids are benchmarks * R&D guidance provided in two forms * Evolved gasoline ICE defines a threshold hydrogen cost used to screen or eliminate options which can't show ability to meet target * Gasoline-electric hybrid defines a lower hydrogen cost used to prioritize projects for resource allocation

49

Anisotropic poststack depth migration, eastern Venezuela  

SciTech Connect

It is known that in areas with significant shale content, the isotropic assumption in depth migration is not correct, and this can lead to incorrect depth positioning if not properly accounted for. In this paper, we performed isotropic and anisotropic poststack depth migrations on a dataset from Eastern Venezuela to study the influence of anisotropy over the depth migration process. When interval velocities derived from surface seismic are compared with those velocities from check shots, significant differences are observed specially for depths associated with a thick sequence of shales identified in the area. These differences in interval velocities are used to obtain estimations of the anisotropic constants used in the anisotropic depth migration process. The anisotropic depth-migrated section allows to position correctly in depth known geological markers identified in well logs, while the results in the isotropic depth-migration show some mismatch with the depths obtained from well-log information.

Uzcategui, O.J.; Mujica, D.L.

1995-12-31T23:59:59.000Z

50

Studies on unsaturated zone hydrology and radionuclide migration at a shallow-land burial site  

SciTech Connect

We studied unsaturated zone hydrology and the migration of radionuclides at a shallow-land burial site located at Maxey Flats, Kentucky. The initial results indicate that the principal pathway of water entry into the trench was by percolation through the trench caps. Tritium-bearing water was found to be moving upward from a saturated waste-burial trench through the trench cap to the soil surface. Evidence of tritium movement at a depth of 3 to 4 meters was observed to a distance of about 5 meters laterally. No /sup 137/Cs migration was observed, but very small amounts of /sup 238/Pu and /sup 60/Co were found to have migrated short distances from the trench.

Schulz, R.K. (Univ. of California, Berkeley); Fowler, E.B.; Essington, E.H.; Polzer, W.L.

1981-07-01T23:59:59.000Z

51

Student Trainee (Pathways Internship)  

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

This position is being filled under the Pathways Internship Program . The program is designed to provide students enrolled in a wide variety of educational institutions, from high school to...

52

Colloid migration in fractured media  

SciTech Connect

Field studies at the Nevada Test Site by researchers at Lawrence Livermore National Laboratory have demonstrated that radionuclides are being transported by colloidal material suspended in groundwater. This observation is counter to most predictions from contaminant transport models because the models assume adsorbed species are immobile. The purpose of this research is to quantify the transport processes for colloidal materials and develop the mechanistic understanding necessary to predict radionuclide transport in fractured media. There were three areas of investigation during this year that have addressed these issues: chemical control of colloid deposition on clean mineral surfaces, colloid accumulation on fracture surfaces, and the influence of deposited colloids on colloid and tracer migration. 7 refs.

Hunt, J.R. (California Univ., Berkeley, CA (USA). Dept. of Civil Engineering)

1989-09-15T23:59:59.000Z

53

Radionuclide characterization, migration, and monitoring at a commercial low-level waste disposal site  

SciTech Connect

A commercial low-level radioactive waste disposal facility is being studied to characterize the physicochemical forms of the radionuclides and their behavior during migration in ground waters. Environmental monitoring studies are also in progress to identify and assess migration pathways of the radionuclides. At the Maxey Flats, Kentucky low-level waste burial site, mobile species of various radionuclides have migrated short distances on-site (meters to tens of meters) from the trenches. Plutonium is migrating as a soluble anionic complex in the Pu(III) and Pu(IV) oxidation states. Empirical evidence suggests that EDTA contained in the trench water has formed strong organic complexes with plutonium and /sup 60/Co, thereby increasing their mobility. Mobile forms of /sup 90/Sr and /sup 137/Cs are associated with a variety of polar organic species, e.g. carboxylic acids. Environmental monitoring studies at the Maxey Flats site are assessing surface contamination and biological monitoring techniques which can be used for long-term surveillance. Deciduous forests growing near the Maxey Flats site offer the potential to detect the migration of radionuclides, particularly tritium, occurring by subterranean flow from the waste trenches of the flow is within the rooting depth of the trees.

Kirby, L.J.; Toste, A.P.; Rickard, W.H.

1983-05-01T23:59:59.000Z

54

Radiation-induced electron migration along DNA  

SciTech Connect

Radiation-induced electron migration along DNA is a mechanism by which randomly produced stochastic energy deposition events can lead to nonrandom types of damage along DNA manifested distal to the sites of the initial energy deposition. Electron migration along DNA is significantly influenced by the DNA base sequence and DNA conformation. Migration along 7 base pairs in oligonucleotides containing guanine bases was observed for oligonucleotides irradiated in solution which compares to average migration distances of 6 to 10 bases for Escherichia coli DNA irradiated in solution and 5.5 base pairs for Escherichia coli DNA irradiated in cells. Evidence also suggests that electron migration can occur preferentially in the 5{prime} to 3{prime} direction along DNA. Our continued efforts will provide information regarding the contribution of electron transfer along DNA to formation of locally multiply damaged sites created in DNA by exposure to ionizing radiation.

Fuciarelli, A.F.; Sisk, E.C.; Miller, J.H. [Pacific Northwest Lab., Richland, WA (United States); Zimbrick, J.D. [National Research Council, Washington, DC (United States)

1994-04-01T23:59:59.000Z

55

A Survey of Process Migration Mechanisms Jonathan M. Smith  

E-Print Network (OSTI)

A Survey of Process Migration Mechanisms Jonathan M. Smith Computer Science Department Columbia Migration Mechanisms Jonathan M. Smith Computer Science Department Columbia University New York, NY 10027

Smith, Jonathan M.

56

NETL Gas Migration Study to Advance Understanding of Responsible...  

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

Gas Migration Study to Advance Understanding of Responsible Oil and Natural Gas Development NETL Gas Migration Study to Advance Understanding of Responsible Oil and Natural Gas...

57

Migration error in transversely isotropic media with linear velocity variation in depth  

SciTech Connect

Given the sensitivity of imaging accuracy to the velocity used in migration, migration founded (as in practice) on the erroneous assumption that a medium is isotropic can be expected to be inaccurate for steep reflectors. Here, we estimate errors in interpreted reflection time and lateral position as a function of reflector dip for transversely isotropic models in which the axis of symmetry is vertical and the medium velocity varies linearly with depth. We limit consideration to media in which ratios of the various elastic moduli are independent of depth. Tests with reflector dips up to 120 degrees on a variety of anisotropic media show errors that axe tens of wavelengths for dips beyond 90 degrees when the medium (unrealistically) is homogeneous. For a given anisotropy, the errors are smaller for inhomogeneous media; the larger the velocity gradient, the smaller the errors. For gradients that are representative of the subsurface, lateral-position errors tend to be minor for dips less than about 60 degrees, growing to two to five wavelengths as dip passes beyond 90 degrees. These errors depend on reflector depth and average velocity to the reflector only through their ratio, i.e., migrated reflection time. Migration error, which is found to be unrelated to the ratio of horizontal to vertical velocity, is such that reflections with later migrated reflection times tend to be more severely over-migrated than are those with earlier ones. Over a large range of dips, migration errors that arise when anisotropy is ignored but inhomogeneity is honored tend to be considerably smaller than those encountered when inhomogeneity is ignored in migrating data from isotropic, inhomogeneous media.

Larner, K.; Cohen, J.K.

1992-01-01T23:59:59.000Z

58

Migration error in transversely isotropic media with linear velocity variation in depth  

SciTech Connect

Given the sensitivity of imaging accuracy to the velocity used in migration, migration founded (as in practice) on the erroneous assumption that a medium is isotropic can be expected to be inaccurate for steep reflectors. Here, we estimate errors in interpreted reflection time and lateral position as a function of reflector dip for transversely isotropic models in which the axis of symmetry is vertical and the medium velocity varies linearly with depth. We limit consideration to media in which ratios of the various elastic moduli are independent of depth. Tests with reflector dips up to 120 degrees on a variety of anisotropic media show errors that axe tens of wavelengths for dips beyond 90 degrees when the medium (unrealistically) is homogeneous. For a given anisotropy, the errors are smaller for inhomogeneous media; the larger the velocity gradient, the smaller the errors. For gradients that are representative of the subsurface, lateral-position errors tend to be minor for dips less than about 60 degrees, growing to two to five wavelengths as dip passes beyond 90 degrees. These errors depend on reflector depth and average velocity to the reflector only through their ratio, i.e., migrated reflection time. Migration error, which is found to be unrelated to the ratio of horizontal to vertical velocity, is such that reflections with later migrated reflection times tend to be more severely over-migrated than are those with earlier ones. Over a large range of dips, migration errors that arise when anisotropy is ignored but inhomogeneity is honored tend to be considerably smaller than those encountered when inhomogeneity is ignored in migrating data from isotropic, inhomogeneous media.

Larner, K.; Cohen, J.K.

1992-10-01T23:59:59.000Z

59

Migration and development in Mexican communities  

E-Print Network (OSTI)

Migration from Mexico to the United States constitutes one of the world's largest labor flows and generates enormous capital flows in the opposite direction. Corresponding to each of these flows is a distinct view of the ...

Schnabl, Peter A. (Peter Andrew)

2008-01-01T23:59:59.000Z

60

SEM analysis of amphibian mesodermal migration  

Science Journals Connector (OSTI)

At the end of gastrulation, the lateral mesoderm of amphibian embryos migrates ventrally between the ectoderm and the endoderm. The present study is an examination of ... ectoderm and mesoderm are dissected away ...

Perry Karfunkel

1977-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Mechanism of constitution liquid film migration  

SciTech Connect

Liquid film migration (LFM) in liquid phase sintering classically involves a large metastable liquid volume adjacent to solid, and migration occurs at an isolated solid-liquid (S-L) interface. Constitutional liquid film migration (CLFM), discovered in alloy 718, has major characteristics similar to those of LFM, except that the metastable liquid is from the constitutional liquation of precipitates on the grain boundary. The similarity between LFM and CLFM has led to the theory that coherency lattice strain responsible for LFM is also responsible for CLFM. The coherency strain hypothesis was tested in this study by evaluating whether the Hillert model of LFM would also apply for CLFM. Experimental results of CLFM in alloy 718 showed that migration velocity followed the trend predicted by the Hillert model. This indicates that the coherency strain hypothesis of LFM also applies for CLFM and that the coherency lattice strain responsible for LFM is also the driving force for CLFM.

NONE

1999-06-01T23:59:59.000Z

62

The Opposed Migration Aerosol Classifier (OMAC)  

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

The Opposed Migration Aerosol Classifier (OMAC) The Opposed Migration Aerosol Classifier (OMAC) Speaker(s): Harmony Gates Date: February 22, 2007 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Melissa Lunden A new differential mobility classifier will be described. The instrument classifies aerosol particles in a channel flow between porous (or screen) electrodes. The aerosol enters the channel parallel to the porous electrodes, while a larger, particle-free cross-flow enters through one of the porous electrode. A potential difference between electrodes causes the charged aerosol particles to migrate upstream against the cross-flow. Only particles whose upward migration velocity balances the cross flow will be transmitted along the path of the classifier. Simulations of the OMAC show that it should give the same resolution at the traditional

63

Pathways to commercial success  

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

HYDROGEN, FUEL CELLS & INFRASTRUCTURE HYDROGEN, FUEL CELLS & INFRASTRUCTURE TECHNOLOGIES (HFCIT) PROGRAM Pathways to Commercial Success: Technologies and Products Supported by the Hydrogen, Fuel Cells & Infrastructure Technologies Program August 2009 Prepared by Pacific Northwest National Laboratory for the U.S. Department of Energy Hydrogen, Fuel Cells & Infrastructure Technologies Program iii Table of Contents Summary .................................................................................................................................................................................................................. v 1.0 Introduction.......................................................................................................................................................................................................1-1

64

Predicting protein folding pathways  

Science Journals Connector (OSTI)

......residues is a good measure of the amount of water displaced by the residue- residue contact...twodomain ?/? enzyme that maintains pools of tetrahydrofolate used in nucleotide...H.J. and Wright,P.E. (2000) Conservation of folding pathways in evolutionary distant......

Mohammed J. Zaki; Vinay Nadimpally; Deb Bardhan; Chris Bystroff

2004-08-01T23:59:59.000Z

65

Experimental implementation of reverse time migration for nondestructive evaluation  

E-Print Network (OSTI)

evaluation (NDE). This paper applies RTM imaging to NDE applications in bounded samples, where reverberation

66

E-Print Network 3.0 - amp signaling pathway Sample Search Results  

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

(cAMP) signaling pathway is also capable of mediating LTP and LTD in hippocampal neurons (Frey et... of GABAA receptors modulates cAMPPKA signaling pathway during a critical time...

67

Solar Market Pathways  

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

The Solar Market Pathways program supports 15 SunShot projects that are advancing solar deployment across the United States. These projects take a variety of approaches to develop actionable strategic plans to expand solar electricity use for residential, community, and commercial properties. Awardees use a wide range of tools, including special financing mechanisms like commercial property assessed clean energy, and the integration of solar energy generation in local emergency response plans.

68

Understanding the Autophagy Pathway  

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

Understanding the Autophagy Pathway Understanding the Autophagy Pathway Understanding the Autophagy Pathway Print Monday, 13 February 2012 14:22 Autophagy is a process in which a double-membrane structure called an 'autophagosome' engulfs portions of a cell's cytoplasm, including organelles. The contents of the autophagosome are then directed for degradation in the lysosome, an organelle that breaks down waste and debris in cells so the raw materials can be reused. Recent research at the ALS clarifies key aspects of enzyme activity in this process. Autophagy is key to maintaining cellular equilibrium, or homeostasis; however, dysregulation of autophagy has been implicated in several diseases. Central to autophagy is a ubiquitin-like protein (Ubl) system called Atg8. In general, Ubls serve as molecular tags, altering the fate of their targets. In autophagy, Atg8 is activated by its E1 enzyme Atg7, then handed off to its E2 enzyme Atg3, and finally attached to a lipid moiety (phosphatidylethanolamine) within the expanding autophagosome.

69

Understanding the Autophagy Pathway  

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

Understanding the Autophagy Pathway Understanding the Autophagy Pathway Understanding the Autophagy Pathway Print Monday, 13 February 2012 14:22 Autophagy is a process in which a double-membrane structure called an 'autophagosome' engulfs portions of a cell's cytoplasm, including organelles. The contents of the autophagosome are then directed for degradation in the lysosome, an organelle that breaks down waste and debris in cells so the raw materials can be reused. Recent research at the ALS clarifies key aspects of enzyme activity in this process. Autophagy is key to maintaining cellular equilibrium, or homeostasis; however, dysregulation of autophagy has been implicated in several diseases. Central to autophagy is a ubiquitin-like protein (Ubl) system called Atg8. In general, Ubls serve as molecular tags, altering the fate of their targets. In autophagy, Atg8 is activated by its E1 enzyme Atg7, then handed off to its E2 enzyme Atg3, and finally attached to a lipid moiety (phosphatidylethanolamine) within the expanding autophagosome.

70

Impact of Concurrent Androgen Deprivation on Fiducial Marker Migration in External-beam Radiation Therapy for Prostate Cancer  

SciTech Connect

Purpose: To determine the extent of gold fiducial marker (FM) migration in patients treated for prostate cancer with concurrent androgen deprivation and external-beam radiation therapy (EBRT). Methods and Materials: Three or 4 gold FMs were implanted in 37 patients with prostate adenocarcinoma receiving androgen deprivation therapy (ADT) in conjunction with 70-78 Gy. Androgen deprivation therapy was started a median of 3.9 months before EBRT (range, 0.3-12.5 months). To establish the extent of FM migration, the distance between each FM was calculated for 5-8 treatments once per week throughout the EBRT course. For each treatment, the distance between FMs was compared with the distance from the digitally reconstructed radiographs generated from the planning CT. A total of 281 treatments were analyzed. Results: The average daily migration was 0.8 {+-} 0.3 mm, with distances ranging from 0.2 mm-2.6 mm. Two of the 281 assessed treatments (0.7%) showed migrations >2 mm. No correlation between FM migration and patient weight or time delay between ADT and start of EBRT was found. There was no correlation between the extent of FM migration and prostate volume. Conclusion: This is the largest report of implanted FM migration in patients receiving concomitant ADT. Only 0.7% of the 281 treatments studied had significant marker migrations (>2 mm) throughout the course of EBRT. Consequently, the use of implanted FMs in these patients enables accurate monitoring of prostate gland position during treatment.

Tiberi, David A.; Carrier, Jean-Francois; Beauchemin, Marie-Claude; Nguyen, Thu Van; Beliveau-Nadeau, Dominic [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal-Hopital Notre-Dame, Montreal, Quebec (Canada)] [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal-Hopital Notre-Dame, Montreal, Quebec (Canada); Taussky, Daniel, E-mail: daniel.taussky.chum@ssss.gouv.qc.ca [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal-Hopital Notre-Dame, Montreal, Quebec (Canada)] [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal-Hopital Notre-Dame, Montreal, Quebec (Canada)

2012-09-01T23:59:59.000Z

71

Migration and Accretion of Protoplanets in 2D and 3D Global Hydrodynamical Simulations  

E-Print Network (OSTI)

Planet evolution is tightly connected to the dynamics of both distant and close disk material. Hence, an appropriate description of disk-planet interaction requires global and high resolution computations, which we accomplish by applying a Nested-Grid method. Through simulations in two and three dimensions, we investigate how migration and accretion are affected by long and short range interactions. For small mass objects, 3D models provide longer growth and migration time scales than 2D ones do, whereas time lengths are comparable for large mass planets.

G. D'Angelo; W. Kley; Th. Henning

2002-08-30T23:59:59.000Z

72

Chemical speciation of radionuclides migrating in groundwaters  

SciTech Connect

In order to more accurately predict the rates and mechanisms of radionuclide migration from low-level waste disposal facilities via groundwater transport, ongoing studies are being conducted at field sites at Chalk River Laboratories to identify and characterize the chemical speciation of mobile, long-lived radionuclides migrating in groundwaters. Large-volume water sampling techniques are being utilized to separate and concentrate radionuclides into particular, cationic, anionic, and nonionic chemical forms. Most radionuclides are migrating as soluble, anionic species that appear to be predominantly organoradionuclide complexes. Laboratory studies utilizing anion exchange chromatography have separated several anionically complexed radionuclides, e.g., {sup 60}Co and {sup 106}Ru, into a number of specific compounds or groups of compounds. Further identification of the anionic organoradionuclide complexes is planned utilizing high resolution mass spectrometry. Large-volume ultra-filtration experiments are characterizing the particulate forms of radionuclides being transported in these groundwaters.

Robertson, D.; Schilk, A.; Abel, K.; Lepel, E.; Thomas, C.; Pratt, S. [Pacific Northwest Lab., Richland, WA (United States); Cooper, E.; Hartwig, P.; Killey, R. [Atomic Energy of Canada Ltd., Chalk River, ON (Canada). Chalk River Nuclear Labs.

1994-04-01T23:59:59.000Z

73

CRITICAL RADIONUCLIDE AND PATHWAY ANALYSIS FOR THE SAVANNAH RIVER SITE  

SciTech Connect

This report is an update to the analysis, Assessment of SRS Radiological Liquid and Airborne Contaminants and Pathways, that was performed in 1997. An electronic version of this large original report is included in the attached CD to this report. During the operational history (1954 to the present) of the Savannah River Site (SRS), many different radionuclides have been released to the environment from the various production facilities. However, as will be shown by this updated radiological critical contaminant/critical pathway analysis, only a small number of the released radionuclides have been significant contributors to potential doses and risks to offsite people. The analysis covers radiological releases to the atmosphere and to surface waters, the principal media that carry contaminants offsite. These releases potentially result in exposure to offsite people. The groundwater monitoring performed at the site shows that an estimated 5 to 10% of SRS has been contaminated by radionuclides, no evidence exists from the extensive monitoring performed that groundwater contaminated with these constituents has migrated off the site (SRS 2011). Therefore, with the notable exception of radiological source terms originating from shallow surface water migration into site streams, onsite groundwater was not considered as a potential exposure pathway to offsite people. In addition, in response to the Department of Energy's (DOE) Order 435.1, several Performance Assessments (WSRC 2008; LWO 2009; SRR 2010; SRR 2011) and a Comprehensive SRS Composite Analysis (SRNO 2010) have recently been completed at SRS. The critical radionuclides and pathways identified in these extensive reports are discussed and, where applicable, included in this analysis.

Jannik, T.

2011-08-30T23:59:59.000Z

74

Uncovering the circadian output pathways of Neurospora crassa  

E-Print Network (OSTI)

control. Most of the advances, however, have come in describing the central oscillators of these systems, and, in some cases, the input pathways used to coordinate these oscillators to external time. Very little progress has been made in understanding...

Vitalini, Michael William

2009-05-15T23:59:59.000Z

75

RADIONUCLIDE MIGRATION IN TUFF UNDER UNSATURATED CONDITIONS  

SciTech Connect

An understanding of the transport of radionuclides through unsaturated and saturated tuffaceous material is essential in assessing the safety of the proposed high-level waste repository at Yucca Mountain. Migration experiments with conservative and chemically reactive non-radioactive tracers have been performed at the Busted Butte Unsaturated Zone underground facility, SE of Yucca Mountain, and with radionuclides in columns of crushed tuff at the Los Alamos National Laboratory. In this paper, complementary radionuclide migration experiments, performed under unsaturated conditions in a small block of tuff excavated from Busted Butte, are described.

T.T. Vandergraaf

2000-10-25T23:59:59.000Z

76

Highly pathogenic H5N1 avian influenza: Entry pathways into North America via bird migration  

E-Print Network (OSTI)

Given the possibility of highly pathogenic H5N1 avian influenza arriving in North America and monitoring programs that have been established to detect and track it, we review intercontinental movements of birds. We divided ...

Peterson, A. Townsend; Benz, Brett W.; Pape?, Monica

2007-02-28T23:59:59.000Z

77

Price war with migrating customers Patrick Maille  

E-Print Network (OSTI)

Price war with migrating customers Patrick Maill´e TELECOM Bretagne 2, rue de la Ch^ataigneraie CS customers churn between providers due to better prices, better reputation or better services. We propose in this paper to study the price war between two providers in the case where users' decisions are modeled

Paris-Sud XI, Université de

78

Anthropology of Intangible Cultural Heritage and Migration: An Uncharted Field  

Science Journals Connector (OSTI)

A review of literature on migration and culture in the Americas (Arizpe et al. 2007) showed that research into the migration of Mexicans to the United States addresses topics as diverse as gender relations (Betti...

Cristina Amescua

2013-01-01T23:59:59.000Z

79

All across Africa: highly individual migration routes of Eleonora's falcon  

Science Journals Connector (OSTI)

...shaped the migration routes of juvenile Eleonora's...and spring migration routes, the variety of important...falcons and historical route (dotted line) modified after Walter...Life cycles and signal transmission data of 13 transmitters...

2008-01-01T23:59:59.000Z

80

Technology Pathways | Department of Energy  

Energy Savers (EERE)

pursues a pathway approach for advancing research and development (R&D) of converting biomass into renewable fuels and products. Following the BETO's successful demonstration of...

Note: This page contains sample records for the topic "migration pathway timing" 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

Dominant Pathways in Protein Folding  

E-Print Network (OSTI)

We present a method to investigate the kinetics of protein folding on a long time-scale and the dynamics underlying the formation of secondary and tertiary structures during the entire reaction. The approach is based on the formal analogy between thermal and quantum diffusion: by writing the solution of the Fokker-Planck equation for the time-evolution of a protein in a viscous heat-bath in terms of a path integral, we derive a Hamilton-Jacobi variational principle from which we are able to compute the most probable pathway of folding. The method is applied to the folding of the Villin Headpiece Subdomain, in the framework of a Go-model. We have found that, in this model, the transition occurs through an initial collapsing phase driven by the starting coil configuration and a later rearrangement phase, in which secondary structures are formed and all computed paths display strong similarities. This method is completely general, does not require the prior knowledge of any reaction coordinate and represents an efficient tool to perfom ab-initio simulations of the entire folding process with available computers.

P. Faccioli; M. Sega; F. Pederiva; H. Orland

2006-07-27T23:59:59.000Z

82

Migration of the European sea bass Cefas have been collaborating with IFREMER scientists and the Breton  

E-Print Network (OSTI)

, in both space and time. We do know, however, that sea bass are highly sensitive to changes in seawater, previous Cefas tagging studies using electronic data storage tags (DSTs) have demonstrated that sea bass with electronic data storage tags were released since August 2010. The arrows indicate possible migration routes

83

Retrieval of Migrated Colonic Stents from the Rectum  

SciTech Connect

Palliative stenting of malignant colonic obstruction may be complicated by stent migration. Stents that migrate into the rectum cannot be passed with bowel movements and frequently cause obstruction. We present two simple means to retrieve stents from the rectum using fluoroscopic guidance. These techniques were used successfully without complication in four stent migrations.

Wholey, Michael H.; Ferral, Hector [Department of Interventional Radiology, Louisiana State University Medical Center, 1542 Tulane Avenue, New Orleans, LA 70112 (United States); Reyes, Ricardo [Department of Radiology, Hospital N.S. Del Pino, Obispo Tavira 7, E-35011 Las Palmas de Gran Canaria (Spain); Lopera, Jorge; Castaneda-Zuniga, Wilfrido [Department of Interventional Radiology, Louisiana State University Medical Center, 1542 Tulane Avenue, New Orleans, LA 70112 (United States); Maynar, Manual [Department of Radiology, Hospital N.S. Del Pino, Obispo Tavira 7, E-35011 Las Palmas de Gran Canaria (Spain)

1997-11-15T23:59:59.000Z

84

Hydrodynamic particle migration in a concentrated suspension undergoing flow between rotating eccentric cylinders  

SciTech Connect

We report on experimental measurements and numerical predictions of shear-induced migration of particles in concentrated suspensions subjected to flow in the wide gap between a rotating inner cylinder placed eccentrically within a fixed outer cylinder (a cylindrical bearing). The suspensions consists of large, noncolloidal spherical particles suspended in a viscous Newtonian liquid. Nuclear magnetic resonance (NMR) imaging is used to measure the time evolution of concentration and velocity profiles as the flow induced particle migration from the initial, well-mixed state. A model originally proposed by Phillips et al. (1992) is generalized to two dimensions. The coupled equations of motion and particle migration are solved numerically using an explicit pseudo-transient finite volume formulation. While not all of the qualitative features observed in the experiments are reproduced by this general numerical implementation, the velocity predictions show moderately good agreement with the experimental data.

Phan-Thien, Nhan [Univ. of Sydney, Sydney, New South Wales (Australia). Dept. of Mechanical Engineering; Graham, A.L.; Abbott, J.R. [Los Alamos National Lab., NM (United States); Altobelli, S.A. [Lovelace Medical Foundation, Albuquerque, New Mexico (United States); Mondy, L.A. [Sandia National Labs., Albuquerque, NM (United States)

1995-07-01T23:59:59.000Z

85

Ad Lucem: Modeling Market Transformation Pathways Workshop |...  

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

Pathways Workshop Ad Lucem: Modeling Market Transformation Pathways Workshop This white paper summarizes the information discussed during the Ad Lucem: Modeling Market...

86

Pathways Programs | Department of Energy  

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

About Us » Jobs & Internships » Pathways Programs About Us » Jobs & Internships » Pathways Programs Pathways Programs As directed by President Obama, the Pathways Programs offer clear paths to Federal internships for students from high school through post-graduate school and to careers for recent graduates, and provide meaningful training and career development opportunities for individuals who are at the beginning of their Federal service. As a student or recent graduate, you can begin your career in the Federal government by choosing the path that best describes you and where you are in your academics: Internship Program: This program is for current students enrolled in a wide variety of educational institutions from high school to graduate level, with paid opportunities to work in agencies and explore Federal

87

National Dialogue on Career Pathways  

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

On Tuesday, September 23, 2014, the U.S. Departments of Labor, Education and Health and Human Services will host a National Dialogue on Career Pathways.  Federal agency leaders from each Department...

88

Laboratory studies of radionuclide migration in tuff  

SciTech Connect

The movement of selected radionuclides has been observed in crushed tuff, intact tuff, and fractured tuff columns. Retardation factors and dispersivities were determined from the elution profiles. Retardation factors have been compared with those predicted on the basis of batch sorption studies. This comparison forms a basis for either validating distribution coefficients or providing evidence of speciation, including colloid formation. Dispersivities measured as a function of velocity provide a means of determining the effect of sorption kinetics or mass transfer on radionuclide migration. Dispersion is also being studied in the context of scaling symmetry to develop a basis for extrapolating from the laboratory scale to the field. 21 refs., 6 figs., 2 tabs.

Rundberg, R.S.; Mitchell, A.J.; Ott, M.A.; Thompson, J.L.; Triay, I.R.

1989-10-01T23:59:59.000Z

89

A Steering Model of Endothelial Sheet Migration Recapitulates Monolayer Integrity and Directed Collective Migration  

Science Journals Connector (OSTI)

...genetically modular control processes to generate complex systems...blood vessels. Our model simulations show that directed motility...migration. A similar process may apply to vessel sprouting...thickening and extracellular matrix proteoglycans. Cardiovasc...supplemental text Zipped PDF file, 179K. A steering...

Philip Vitorino; Mark Hammer; Jongmin Kim; Tobias Meyer

2010-10-25T23:59:59.000Z

90

Catalog of Waters Important for the Spawning, Rearing or Migration...  

Open Energy Info (EERE)

Spawning, Rearing or Migration of Anadromous Fishes Organization Alaska Department of Fish and Game Published Divisions of Sport Fish and Habitat, 2012 Report Number 12-05 DOI...

91

Graphene Layer Growth: Collision of Migrating Five-Member Rings  

E-Print Network (OSTI)

Monte Carlo simulations of graphene edge buildup, the rateGraphene layer growth: Collision of migrating five- memberon the zigzag edge of a graphene layer. The process is

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

2005-01-01T23:59:59.000Z

92

Bubble Migration in Pore Networks of Uniform Geometry.  

E-Print Network (OSTI)

??The behavior of bubbles migrating in porous media is a critical factor in several soil remediation operations such as in situ air sparging, supersaturated water… (more)

Ghasemian, Saloumeh

2012-01-01T23:59:59.000Z

93

Defect Migration and Recombination in Nanoindentation of Silica...  

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

Defect Migration and Recombination in Nanoindentation of Silica Glass Authors: Nomura, K., Chen, Y., Kalia, R.K., Nakano, A., Vashishta, P. Deformation, plasticity, and flow in...

94

"OUT OF AFRICA: GENETICS AND HUMAN MIGRATIONS", Prof. Gyan Bhanot...  

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

7, 2012, 9:30am Science On Saturday MBG Auditorium "OUT OF AFRICA: GENETICS AND HUMAN MIGRATIONS", Prof. Gyan Bhanot, Department of Molecular Biology, Biochemistry and Physics,...

95

Geographically distributed acoustical monitoring of migrating birds  

Science Journals Connector (OSTI)

A geographically distributed system of largely automated acoustical monitoring stations was developed to monitor the migration of small passerine birds. The targeted species wood warblers and sparrows migrate at night and produce short (about 120 ms at the longest) high?pitched (between roughly 6 and 10 kHz) calls as they fly often audible from the ground. The monitoring system consisted of ten stations located in New Jersey Maryland Pennsylvania and New York and a central data repository located at the Cornell Lab of Ornithology. Each station comprised an outdoor weatherproof microphone connected to a volunteer’s home computer. The computer automatically ran acoustic transient detection software each night that listened continuously to the microphone signal and extracted all transients matching certain criteria each to its own audio file. The detected transients were uploaded by the volunteer each morning via the Internet to the central repository for classification and archival. Results including spectrograms of all detected transients and bird call counts were displayed on a public web site updated daily. [Work supported by EPA.

2000-01-01T23:59:59.000Z

96

Impact of tide gates on the migration of juvenile sea trout, Salmo trutta  

Science Journals Connector (OSTI)

Abstract As part of flood protection and land reclamation schemes, tide gates allow rivers to discharge to sea when open, and prevent salt water intrusion when closed. Their impact on diadromous fish migration between essential spawning and rearing habitats, and the effectiveness of mitigation measures, have received little consideration. The River Meon, UK, discharges to sea through four top-hung counterbalanced tide gates. In March 2012, the gates were replaced with new ones of the same design, but with an orifice installed in two of them partly to improve fish passage. Sixty downstream migrating juvenile sea trout, Salmo trutta, were trapped approximately 4.9 km upstream of the tidal limit and tagged with acoustic transmitters in April 2011 (n = 30) and 2012 (n = 30). Tagged individuals were detected by acoustic receivers placed near the tide gates before (year 1) and after (year 2) orifice installation. Of the fish that approached the tide gates, 95.8% and 100.0% successfully passed in years 1 and 2, respectively. The speed of migration at the gates was slower than for upstream and downstream reaches, and was positively related to percentage of time the gates were open. Presence of the orifices did not influence delay. Overall, top-hung tide gates delayed sea trout migration, potentially increasing the risk of predation and energy expenditure during the vulnerable juvenile life stage.

G.V. Wright; R.M. Wright; P.S. Kemp

2014-01-01T23:59:59.000Z

97

A prediction of meander migration based on large-scale flume tests in clay  

E-Print Network (OSTI)

Scour Depth, d, and Different Lengths of the Project Life, L t (Briaud et al. 2003) ......... 47 3.31 Time-Sequence Maps and Extrapolations (Lagasse et al. 2004b).............. 48 3.32 Predicted Position and Radius of Curvature... of the Circle that Defines the Outer Bank of the Hypothetical Channel in Year 4 (Lagasse et al. 2004b)................................................................................. 48 3.33 Cumulative Percentage of Extension Migration (Lagasse et...

Park, Namgyu

2009-05-15T23:59:59.000Z

98

Lurking Pathway Prediction And Pathway ODE Model Dynamic Analysis  

E-Print Network (OSTI)

regulated proteins in the transduction pro- cess. And by modeling the CCL2 pathway in MTB infected cells, J N K , cM Y C and P LC showed as the most significant modules. Hence, the drug treatments inhibit- ing J N K , cM Y C and P LC would effectively...

Zhang, Rengjing

2013-11-18T23:59:59.000Z

99

Surface Adsorption and Migration Energies for KCl  

Science Journals Connector (OSTI)

The binding and migration energies for a K+ ion on a (100) KCl surface are calculated. It is found that the most stable K+ site is about an interionic lattice spacing above a Cl- surface ion and the binding energy is 0.68 ev. The activation energy for lateral diffusion is 0.23 ev and the estimated vibration frequencies are 1012 sec-1 along the surface and 2.8×1012 sec-1 normal to the surface. From these figures it is shown that the mean path length of the ion is about 2×10-4 cm; the binding energy for an absorbed KCl molecule is found to be about 0.36 ev. This leads to the conclusion that the molecule will travel at most a few lattice spacings before evaporating. Some effects of this on crystal growth and additive coloring are discussed briefly.

John E. Hove

1955-07-15T23:59:59.000Z

100

Department of Economic and Social Affairs International Migration Report 2002  

E-Print Network (OSTI)

Department of Economic and Social Affairs International Migration Report 2002 United Nations #12;ST/ESA/SER.A/220 Department of Economic and Social Affairs Population Division International Migration Report 2002 process. The term "country" as used in the text of this report also refers, as appropriate, to territories

Huang, Youqin

Note: This page contains sample records for the topic "migration pathway timing" 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

Bent-ray traveltime tomography and migration without ray tracing  

Science Journals Connector (OSTI)

......single step, and an iterative optimization process has to be implemented to find the minimum...migration-field data example 57th Ann. Int. Mtg, EAEG ,Expanded abstracts of papers...migration velocity models 56th Ann. Int. Mtg, EAEG ,Expanded abstracts of papers......

P. E. Ecoublet; S. C. Singh; C. H. Chapman; G. M. Jackson

2002-06-01T23:59:59.000Z

102

Crosswell imaging by two-dimensional oriented wave path migration  

Science Journals Connector (OSTI)

......separated prior to the migration process. In order to verify that oriented...separated prior to the migration process. 4 Conclusions We derived the...imaging, 63th Ann. Internat. Mtg. Soc. Expl. Geophys., 92-94...reservoir, 62nd Ann. Internat. Mtg. Soc. Expl. Geophys., 49-53......

Yike Liu; Hongchuan Sun; Xu Chang

2007-04-01T23:59:59.000Z

103

Transportation Energy Pathways LDRD.  

SciTech Connect

This report presents a system dynamics based model of the supply-demand interactions between the USlight-duty vehicle (LDV) fleet, its fuels, and the corresponding primary energy sources through the year2050. An important capability of our model is the ability to conduct parametric analyses. Others have reliedupon scenario-based analysis, where one discrete set of values is assigned to the input variables and used togenerate one possible realization of the future. While these scenarios can be illustrative of dominant trendsand tradeoffs under certain circumstances, changes in input values or assumptions can have a significantimpact on results, especially when output metrics are associated with projections far into the future. Thistype of uncertainty can be addressed by using a parametric study to examine a range of values for the inputvariables, offering a richer source of data to an analyst.The parametric analysis featured here focuses on a trade space exploration, with emphasis on factors thatinfluence the adoption rates of electric vehicles (EVs), the reduction of GHG emissions, and the reduction ofpetroleum consumption within the US LDV fleet. The underlying model emphasizes competition between13 different types of powertrains, including conventional internal combustion engine (ICE) vehicles, flex-fuel vehicles (FFVs), conventional hybrids(HEVs), plug-in hybrids (PHEVs), and battery electric vehicles(BEVs).We find that many factors contribute to the adoption rates of EVs. These include the pace of technologicaldevelopment for the electric powertrain, battery performance, as well as the efficiency improvements inconventional vehicles. Policy initiatives can also have a dramatic impact on the degree of EV adoption. Theconsumer effective payback period, in particular, can significantly increase the market penetration rates ifextended towards the vehicle lifetime.Widespread EV adoption can have noticeable impact on petroleum consumption and greenhouse gas(GHG) emission by the LDV fleet. However, EVs alone cannot drive compliance with the most aggressiveGHG emission reduction targets, even as the current electricity source mix shifts away from coal and towardsnatural gas. Since ICEs will comprise the majority of the LDV fleet for up to forty years, conventional vehicleefficiency improvements have the greatest potential for reductions in LDV GHG emissions over this time.These findings seem robust even if global oil prices rise to two to three times current projections. Thus,investment in improving the internal combustion engine might be the cheapest, lowest risk avenue towardsmeeting ambitious GHG emission and petroleum consumption reduction targets out to 2050.3 AcknowledgmentThe authors would like to thank Dr. Andrew Lutz, Dr. Benjamin Wu, Prof. Joan Ogden and Dr. ChristopherYang for their suggestions over the course of this project. This work was funded by the Laboratory DirectedResearch and Development program at Sandia National Laboratories.4

Barter, Garrett; Reichmuth, David; Westbrook, Jessica; Malczynski, Leonard A. [Sandia National Laboratories, Albuquerque, NM] [Sandia National Laboratories, Albuquerque, NM; Yoshimura, Ann S.; Peterson, Meghan; West, Todd H.; Manley, Dawn Kataoka; Guzman, Katherine Dunphy; Edwards, Donna M.; Hines, Valerie Ann-Peters

2012-09-01T23:59:59.000Z

104

Atomic Computer Simulations of Defect Migration in 3C and 4H...  

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

Computer Simulations of Defect Migration in 3C and 4H-SiC. Atomic Computer Simulations of Defect Migration in 3C and 4H-SiC. Abstract: Knowledge of the migration of intrinsic point...

105

Environmentally-Forced Migration in Rural Areas: Security Risks and Threats in Mexico  

Science Journals Connector (OSTI)

This chapter deals with international migration and its geopolitical repercussions between Mexico and the USA. Climate-induced migration (CIM) or environmentally- forced migration (EFM) is not a new phenomenon, b...

Úrsula Oswald Spring

2012-01-01T23:59:59.000Z

106

Internal migration in China and the United States: a comparative analysis  

E-Print Network (OSTI)

This thesis presents a two-level analysis of China's temporary migration. The first part examines the interprovincial migration of China from the perspective of ecological theory and compares it with the inter-state migration of the United States...

Chen, Chi

2012-06-07T23:59:59.000Z

107

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 2001-2002 Annual Report.  

SciTech Connect

This report details the 2002 results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends in the cumulative data collected for this project from Oregon and Idaho streams since 1989. The project was initiated after detection data from passive-integrated-transponder tags (PIT tags) had shown distinct differences in migration patterns between wild and hatchery fish for three consecutive years. National Marine Fisheries Service (NMFS) investigators first observed these differences in 1989. The data originated from tagging and interrogation operations begun in 1988 to evaluate smolt transportation for the U.S. Army Corps of Engineers. In 1991, the Bonneville Power Administration began a cooperative effort with NMFS to expand tagging and interrogation of wild fish. Project goals were to characterize the outmigration timing of these fish, to determine whether consistent migration patterns would emerge, and to investigate the influence of environmental factors on the timing and distribution of these migrations. In 1992, the Oregon Department of Fish and Wildlife (ODFW) began an independent program of PIT tagging wild chinook salmon parr in the Grande Ronde and Imnaha River Basins in northeast Oregon. Since then, ODFW has reported all tagging, detection, and timing information on fish from these streams. However, with ODFW concurrence, NMFS will continue to report arrival timing of these fish at Lower Granite Dam.

Achond, Stephen; Hockersmith, Eric E.; Sandford, Benjamin P. (National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, WA)

2003-07-01T23:59:59.000Z

108

Dynamic Modeling of Cell Migration and Spreading Behaviors on Fibronectin Coated Planar Substrates and Micropatterned Geometries  

E-Print Network (OSTI)

An integrative cell migration model incorporating focal adhesion (FA) dynamics, cytoskeleton and nucleus remodeling, actin motor activity, and lamellipodia protrusion is developed for predicting cell spreading and migration ...

Kim, Min-Cheol

109

Assisted migration of plants: Changes in latitudes, changes in attitudes  

Science Journals Connector (OSTI)

Rapid climate change has the potential to alter the location of bioclimatic envelopes for a significant portion of the world’s flora. Plant species will respond variously via phenotypic plasticity, evolutionary adaptation, migration, or extinction. When fragmentation limits migration potential of many species or when natural migration rates are outstripped by the pace of climate change, some propose purposeful, human-mediated migration (assisted migration) as a solution. Here, we join the debate on assisted migration, and while recognizing the potential negative impacts, present a strategy to collect and bank seeds of plant species at risk of extinction in the face of rapid climate change to ensure that emerging habitats are as species-diverse as possible. We outline the framework currently being used by the Dixon National Tallgrass Prairie Seed Bank to prioritize species for seed banking, both for restoration purposes and for potential assisted migration in the future. We propose a strategy for collecting across the entirety of a species range, while targeting populations likely to go extinct under climate change, determined by application of species distribution models. Finally, we discuss current international efforts to collect and bank the global flora, as well as the research needs necessary to fully undertake the strategy presented.

Pati Vitt; Kayri Havens; Andrea T. Kramer; David Sollenberger; Emily Yates

2010-01-01T23:59:59.000Z

110

Study of an API Migration for Two XML APIs  

E-Print Network (OSTI)

Abstract. API migration refers to adapting an application such that its dependence on a given API (the source API) is eliminated in favor of depending on an alternative API (the target API) with the source and target APIs serving the same domain. One may attempt to automate API migration by code transformation or wrapping of some sort. API migration is relatively well understood for the special case where source and target APIs are essentially different versions of the same API. API migration is much less understood for the general case where the two APIs have been developed more or less independently of each other. The present paper exercises a simple instance of the general case and develops engineering techniques towards the mastery of API migration. That is, we study wrapper-based migration between two prominent XML APIs for the Java platform. The migration follows an iterative and test-driven approach and allows us to identify, classify, and measure various differences between the studied APIs in a systematic way. 1

Thiago Tonelli Bartolomei; Krzysztof Czarnecki; Ralf Lämmel; Tijs Van Der Storm

2010-01-01T23:59:59.000Z

111

Characterization of Protein Folding by Dominant Reaction Pathways  

E-Print Network (OSTI)

We assess the reliability of the recently developed approach denominated Dominant Reaction Pathways (DRP) by studying the folding of a 16-residue beta-hairpin, within a coarse-grained Go-type model. We show that the DRP predictions are in quantitative agreement with the results of Molecular Dynamics simulations, performed in the same model. On the other hand, in the DRP approach, the computational difficulties associated to the decoupling of time scales are rigorously bypassed. The analysis of the important transition pathways supports a picture of the beta-hairpin folding in which the reaction is initiated by the collapse of the hydrophobic cluster.

Pietro Faccioli

2008-06-23T23:59:59.000Z

112

Pathway and Stability of Protein Folding  

Science Journals Connector (OSTI)

...research-article Pathway and Stability of Protein Folding Alan R. Fersht Mark Bycroft...experimental approach to the problem of protein folding and stability which measures...helices. Pathway and stability of protein folding. | We describe an experimental...

1991-01-01T23:59:59.000Z

113

Light Duty Vehicle Pathways | Department of Energy  

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

Duty Vehicle Pathways Light Duty Vehicle Pathways Presented at the U.S. Department of Energy Light Duty Vehicle Workshop in Washington, D.C. on July 26, 2010....

114

Radionuclide migration laboratory studies for validation of batch sorption data  

SciTech Connect

Advective and diffusive migration experiments (within the Dynamic Transport Column Experiments and Diffusion Studies of the Yucca Mountain Site Characterization Project) involve utilizing crushed material, intact, and fractured tuff in order to test and improve (if necessary) transport models by experimentally observing the migration of sorbing and non-sorbing radionuclides on a laboratory scale. Performing a validation of the sorption data obtained with batch techniques (within the Batch Sorption Study) is an integral part of the mission of the Dynamic Transport Column Experiments and Diffusion Studies. In this paper the work scope of the radionuclide migration laboratory experiments (as they apply to validation of batch sorption data) is reviewed.

Triay, I.R.; Mitchell, A.J.; Ott, M.A.

1991-12-31T23:59:59.000Z

115

Metabolic Pathways and Metabolic Engineering  

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

Metabolic pathways and Metabolic pathways and metabolic engineering Adam Guss Genetic and Metabolic Engineer Oak Ridge National Laboratory Sept 25, 2013 2 Managed by UT-Battelle for the U.S. Department of Energy Metabolic engineering of Clostridium thermocellum for cellulosic ethanol production NAD(P)H NAD(P) + Acetyl-P 2 H + NAD + NAD + NADH NADH P i CoA ADP ATP L-Lactic Acid Acetic Acid Ethanol NADH NAD + NADH NAD + H 2 2 H + Fd oxidized Fd reduced Formic acid H 2 Cellulose Acetaldehyde Pyruvate Acetyl-CoA Glucose-6P 0 10 20 30 40 Product concentration (mM) Clostridium thermocellum mutant fermentation Ethanol Acetate Lactate By understanding and then modifying carbon and electron flux, we have increased ethanol yield in C. thermocellum 3 Managed by UT-Battelle for the U.S. Department of Energy

116

Efficiency Improvement Pathway | Department of Energy  

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

Efficiency Improvement Pathway Technological solutions are hindered by the current economic reality and competing needs, but governmentacademicbusiness collaborative efforts...

117

Pathways Analysis for State Proliferators  

E-Print Network (OSTI)

. ............................................................... 110 Figure 60 Japan with both HEU and plutonium nodes activated ............................ 110 Figure 61 Japan with both HEU and plutonium nodes activated in addition to a tamper..., a uranium path and a plutonium path. The uranium path involves enrichment pathways and leads to either a gun type weapon or implosion type weapon. The plutonium path involves reactors and reprocessing facilities and leads to an implosion weapon...

Mella, Michael

2012-07-16T23:59:59.000Z

118

Ex-Situ Catalytic Fast Pyrolysis Technology Pathway  

SciTech Connect

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to hydrocarbon fuels to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This pathway case investigates converting woody biomass using ex-situ catalytic fast pyrolysis followed by upgrading to gasoline , diesel and jet range blendstocks . Technical barriers and key research needs that should be pursued for this pathway to be competitive with petroleum-derived blendstocks have been identified.

Biddy, Mary J.; Dutta, Abhijit; Jones, Susanne B.; Meyer, Pimphan A.

2013-03-31T23:59:59.000Z

119

In-Situ Catalytic Fast Pyrolysis Technology Pathway  

SciTech Connect

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to hydrocarbon fuels to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This pathway case investigates converting woody biomass using in-situ catalytic fast pyrolysis followed by upgrading to gasoline, diesel, and jet range blendstocks. Technical barriers and key research needs that should be pursued for this pathway to be competitive with petroleum-derived blendstocks have been identified.

Biddy, Mary J.; Dutta, Abhijit; Jones, Susanne B.; Meyer, Pimphan A.

2013-03-31T23:59:59.000Z

120

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

SciTech Connect

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This technology pathway case investigates the biological conversion of biomass derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline, diesel and jet range hydrocarbon blendstocks.

Davis, Ryan; Biddy, Mary J.; Tan, Eric; Tao, Ling; Jones, Susanne B.

2013-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. | EMSL  

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

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Abstract: The degradation of the ionic pathway throughout the catalyst...

122

Migration/inversion for transversely isotropic elastic media  

Science Journals Connector (OSTI)

......Inverse scattering solutions in anisotropic media, inGeophysical Inversion...plane-layered isotropic and anisotropic media by the state-space...1990 Velocity anisotropy in shale determined from crosshole...migration/inversion method for anisotropic elastic media. Our derivation......

David W. S. Eaton; Robert R. Stewart

1994-11-01T23:59:59.000Z

123

Interprovincial Migration and the Stringency of Energy Policy in China  

E-Print Network (OSTI)

Interprovincial migration flows involve substantial relocation of people and productive activity, with implications for regional energy use and greenhouse gas emissions. In China, these flows are not explicitly considered ...

Luo, Xiaohu

2014-12-02T23:59:59.000Z

124

Effects of interstitial flow on tumor cell migration  

E-Print Network (OSTI)

Interstitial flow is the convective transport of fluid through tissue extracellular matrix. This creeping fluid flow has been shown to affect the morphology and migration of cells such as fibroblasts, cancer cells, endothelial ...

Polacheck, William J. (William Joseph)

2010-01-01T23:59:59.000Z

125

Quantitative studies of EGFR autocrine induced cell signaling and migration  

E-Print Network (OSTI)

Epidermal growth factor (EGF) receptor autocrine and/or paracrine signaling plays an important role in normal epithelial cell proliferation, survival, adhesion and migration. Aberrant expression of the EGF receptor and its ...

Joslin, Elizabeth Jane

2007-01-01T23:59:59.000Z

126

Mechanotransduction of fluid stresses governs 3D cell migration  

E-Print Network (OSTI)

Solid tumors are characterized by high interstitial fluid pressure, which drives fluid efflux from the tumor core. Tumor-associated interstitial flow (IF) at a rate of ?3 µm/s has been shown to induce cell migration in the ...

Polacheck, William J.

127

Wandering Neuronal Migration in the Postnatal Vertebrate Forebrain  

E-Print Network (OSTI)

Most non-mammalian vertebrate species add new neurons to existing brain circuits throughout life, a process thought to be essential for tissue maintenance, repair, and learning. How these new neurons migrate through the ...

Scott, Benjamin B.

128

Lessons from Loscoe: the uncontrolled migration of landfill gas  

Science Journals Connector (OSTI)

...the uncontrolled migration of landfill gas G. M. Williams 1 N. Aitkenhead...Environment, 1989. The Control of Landfill Gas. HMSO, London. Doelle, H...1988. Trace constituents in landfill gas. Gas Research Institute. Frost...

G. M. Williams; N. Aitkenhead

129

Exciton Migration in Organic LEDs and Solar Cells  

Science Journals Connector (OSTI)

Triplet exciton migration is a very important process for both organic LEDs and photovoltaics. We have explored a number of new materials in both OLEDs and OPVs and examined triplet...

Thompson, Mark; Wu, Chao; Djurovich, Peter; Perez, M Dolores

130

Evidence for active vertical migration by two dinoflagellates ...  

Science Journals Connector (OSTI)

Stable isotopes of Fe (57Fe-FeCl3) and N (15N-NaNO3) were assimilated from the bottom 0.4 m of the column during migration, with significant enrichment of ...

131

Study of an API Migration for Two XML APIs  

Science Journals Connector (OSTI)

API migration refers to adapting an application such that its dependence on a given API (the source API) is eliminated in favor of depending on an alternative API (the target API) with the source and target APIs ...

Thiago Tonelli Bartolomei; Krzysztof Czarnecki…

2010-01-01T23:59:59.000Z

132

Tracking long-distance migration to assess marine pollution impact  

Science Journals Connector (OSTI)

...Quebec, Canada 4 Environment Canada, Mount Pearl, Newfoundland, Canada Animal tracking provides new...multiple colonies in eastern Canada migrated to the pollution zone...cannot be determined during solar equinoxes [8], so latitude...

2012-01-01T23:59:59.000Z

133

Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990----2003):2003)  

E-Print Network (OSTI)

1 Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990Migration from Iraq between the Gulf and the Iraq wars (1990----2003):2003):2003):2003): historical and sociospacial

Paris-Sud XI, Université de

134

Gas giant planets as dynamical barriers to inward-migrating super-Earths  

E-Print Network (OSTI)

Planets of 1-4 times Earth's size on orbits shorter than 100 days exist around 30-50% of all Sun-like stars. In fact, the Solar System is particularly outstanding in its lack of "hot super-Earths" (or "mini-Neptunes"). These planets -- or their building blocks -- may have formed on wider orbits and migrated inward due to interactions with the gaseous protoplanetary disk. Here, we use a suite of dynamical simulations to show that gas giant planets act as barriers to the inward migration of super-Earths initially placed on more distant orbits. Jupiter's early formation may have prevented Uranus and Neptune (and perhaps Saturn's core) from becoming hot super-Earths. Our model predicts that the populations of hot super-Earth systems and Jupiter-like planets should be anti-correlated: gas giants (especially if they form early) should be rare in systems with many hot super-Earths. Testing this prediction will constitute a crucial assessment of the validity of the migration hypothesis for the origin of close-in supe...

Izidoro, Andre; Morbidelli, Alessandro; Hersant, Franck; Pierens, Arnaud

2015-01-01T23:59:59.000Z

135

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Juveniles, 2003-2004 Annual Report.  

SciTech Connect

This report provides information on PIT-tagging of wild Chinook salmon parr in Idaho in 2003 and the subsequent monitoring of these fish and similarly tagged fish from Oregon. We report estimated parr-to-smolt survival and arrival timing of these fish at Lower Granite Dam, as well as interrogation data collected at several other sites throughout the Snake and Columbia River system. This research continues studies that began under Bonneville Power Administration (BPA) funding in 1991. Results from previous study years were reported by Achord et al. (1994; 1995a,b; 1996a; 1997; 1998; 2000; 2001a,b; 2002, 2003, 2004). Goals of this ongoing study are: (1) Characterize the migration timing and estimate parr-to-smolt survival of different stocks of wild Snake River spring/summer Chinook salmon smolts at Lower Granite Dam. (2) Determine whether consistent migration patterns are apparent. (3) Determine what environmental factors influence migration patterns. (4) Characterize the migration behavior and estimate survival of different wild juvenile fish stocks as they emigrate from their natal rearing areas. This study provides critical information for recovery planning, and ultimately recovery for these ESA-listed wild fish stocks. In 2003-2004, we also continued to measure water temperature, dissolved oxygen, specific conductance, turbidity, water depth, and pH at five monitoring stations in the Salmon River Basin, Idaho for the Baseline Environmental Monitoring Program. These data, along with parr/smolt migration, survival, and timing data, will help to discern patterns or characteristic relationships between fish movement/survival and environmental factors.

Achord, Stephen; Hodge, Jacob M.; Sandford, Benjamin P.

2005-06-01T23:59:59.000Z

136

Understanding Contaminant Transport Pathways at Rocky Flats - A Basis for the Remediation Strategy  

SciTech Connect

The Rocky Flats Environmental Technology Site (RFETS) is a Department of Energy facility located approximately 16 miles northwest of Denver, Colorado. Processing and fabrication of nuclear weapons components occurred at Rocky Flats from 1952 through 1989. Operations at the Site included the use of several radionuclides, including plutonium-239/240 (Pu), americium-241 (Am), and various uranium (U) isotopes, as well as several types of chlorinated solvents. The historic operations resulted in legacy contamination, including contaminated facilities, process waste lines, buried wastes and surface soil contamination. Decontamination and removal of buildings at the site was completed in late 2005, culminating more than ten years of active environmental remediation work. The Corrective Action Decision/Record of Decision was subsequently approved in 2006, signifying regulatory approval and closure of the site. The use of RFETS as a National Wildlife Refuge is scheduled to be in full operation by 2012. To develop a plan for remediating different types of radionuclide contaminants present in the RFETS environment required understanding the different environmental transport pathways for the various actinides. Developing this understanding was the primary objective of the Actinide Migration Evaluation (AME) project. Findings from the AME studies were used in the development of RFETS remediation strategies. The AME project focused on issues of actinide behavior and mobility in surface water, groundwater, air, soil and biota at RFETS. For the purposes of the AME studies, actinide elements addressed included Pu, Am, and U. The AME program, funded by DOE, brought together personnel with a broad range of relevant expertise in technical investigations. The AME advisory panel identified research investigations and approaches that could be used to solve issues related to actinide migration at the Site. An initial step of the AME was to develop a conceptual model to provide a qualitative description of the relationships among potential actinide sources and transport pathways at RFETS. One conceptual model was developed specifically for plutonium and americium, because of their similar geochemical and transport properties. A separate model was developed for uranium because of its different properties and mobility in the environment. These conceptual models were guidelines for quantitative analyses described in the RFETS Pathway Analysis Report, which used existing data from the literature as well as site-specific analyses, including field, laboratory and modeling studies to provide quantitative estimates of actinide migration in the RFETS environment. For pathways where more than one method was used to estimate offsite loads for a specific pathway, the method yielding the highest estimated off-site was used for comparison purposes. For all actinides studied, for pre-remediation conditions, air and surface water were identified to be the dominant transport mechanisms. The estimated annual airborne plutonium-239/240 load transported off site exceeded the surface water load by roughly a factor of 40. However, despite being the largest transport pathway, airborne radionuclide concentrations at the monitoring location with the highest measurements during the period studied were less than two percent of the allowable 10 milli-rem standard governing DOE facilities. Estimated actinide loads for other pathways were much less. Shallow groundwater was approximately two orders of magnitude lower, or 1/100 of the load conveyed in surface water. The estimated biological pathway load for plutonium was approximately five orders of magnitude less, or 1/100,000, of the load estimated for surface-water. The pathway analysis results were taken into consideration during subsequent remediation activities that occurred at the site. For example, when the 903 Pad area was remediated to address elevated concentrations of Pu and Am in the surface soil, portable tent structures were constructed to prevent wind and water erosion from occurring while remediation activitie

Paton, Ian [Wright Water Engineers, Inc.: 2490 W. 26th Avenue, Suite 100A, Denver, CO 80211 (United States)

2008-01-15T23:59:59.000Z

137

Combustion kinetics and reaction pathways  

SciTech Connect

This project is focused on the fundamental chemistry of combustion. The overall objectives are to determine rate constants for elementary reactions and to elucidate the pathways of multichannel reactions. A multitechnique approach that features three independent experiments provides unique capabilities in performing reliable kinetic measurements over an exceptionally wide range in temperature, 300 to 2500 K. Recent kinetic work has focused on experimental studies and theoretical calculations of the methane dissociation system (CH{sub 4} + Ar {yields} CH{sub 3} + H + Ar and H + CH{sub 4} {yields} CH{sub 3} + H{sub 2}). Additionally, a discharge flow-photoionization mass spectrometer (DF-PIMS) experiment is used to determine branching fractions for multichannel reactions and to measure ionization thresholds of free radicals. Thus, these photoionization experiments generate data that are relevant to both reaction pathways studies (reaction dynamics) and fundamental thermochemical research. Two distinct advantages of performing PIMS with high intensity, tunable vacuum ultraviolet light at the National Synchrotron Light Source are high detection sensitivity and exceptional selectivity in monitoring radical species.

Klemm, R.B.; Sutherland, J.W. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

138

Disease pathways at the Rat Genome Database Pathway Portal: genes in context—a network approach to understanding the molecular mechanisms of disease  

Science Journals Connector (OSTI)

A new resource offering a range of pathway data and visualization, including disease pathways and related pathway suites.

Victoria Petri; G Hayman; Marek Tutaj; Jennifer R Smith; Stanley Laulederkind; Shur-Jen Wang; Rajni Nigam; Jeff De Pons; Mary Shimoyama; Melinda R Dwinell; Elizabeth A Worthey; Howard J Jacob

2014-09-30T23:59:59.000Z

139

Syngas Upgrading to Hydrocarbon Fuels Technology Pathway  

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

Integration Process Heat and Power Integration Process Heat and Power Integration Biogas + Sludge Woody Biomass 2 Key Highlights * This thermochemical conversion pathway for...

140

Dominant Pathways in Protein Folding  

Science Journals Connector (OSTI)

We present a method to investigate the kinetics of protein folding and the dynamics underlying the formation of secondary and tertiary structures during the entire reaction. By writing the solution of the Fokker-Planck equation in terms of a path integral, we derive a Hamilton-Jacobi variational principle from which we are able to compute the most probable pathway of folding. The method is applied to the folding of the Villin headpiece subdomain simulated using a Go model. An initial collapsing phase driven by the initial configuration is followed by a rearrangement phase, in which secondary structures are formed and all computed paths display strong similarities. This completely general method does not require the prior knowledge of any reaction coordinate and is an efficient tool to perform simulations of the entire folding process with available computers.

P. Faccioli; M. Sega; F. Pederiva; H. Orland

2006-09-06T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Fuel Dependence of Benzene Pathways  

SciTech Connect

The relative importance of formation pathways for benzene, an important precursor to soot formation, was determined from the simulation of 22 premixed flames for a wide range of equivalence ratios (1.0 to 3.06), fuels (C{sub 1}-C{sub 12}), and pressures (20 to 760 torr). The maximum benzene concentrations in 15 out of these flames were well reproduced within 30% of the experimental data. Fuel structural properties were found to be critical for benzene production. Cyclohexanes and C{sub 3} and C{sub 4} fuels were found to be among the most productive in benzene formation; and long-chain normal paraffins produce the least amount of benzene. Other properties, such as equivalence ratio and combustion temperatures, were also found to be important in determining the amount of benzene produced in flames. Reaction pathways for benzene formation were examined critically in four premixed flames of structurally different fuels of acetylene, n-decane, butadiene, and cyclohexane. Reactions involving precursors, such as C{sub 3} and C{sub 4} species, were examined. Combination reactions of C{sub 3} species were identified to be the major benzene formation routes with the exception of the cyclohexane flame, in which benzene is formed exclusively from cascading fuel dehydrogenation via cyclohexene and cyclohexadiene intermediates. Acetylene addition makes a minor contribution to benzene formation, except in the butadiene flame where C{sub 4}H{sub 5} radicals are produced directly from the fuel, and in the n-decane flame where C{sub 4}H{sub 5} radicals are produced from large alkyl radical decomposition and H atom abstraction from the resulting large olefins.

Zhang, H; Eddings, E; Sarofim, A; Westbrook, C

2008-07-14T23:59:59.000Z

142

Brine Migration Experimental Studies for Salt Repositories | Department of  

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

Brine Migration Experimental Studies for Salt Repositories Brine Migration Experimental Studies for Salt Repositories Brine Migration Experimental Studies for Salt Repositories Experiments were used to examine water content in Permian salt samples (Salado Formation) collected from the WIPP site. The profile of water release and movement is recognized as a function of temperature from 30 to 275 oC using classical gravimetric methods to measure weight loss as a result of heating. The amount of water released from heating the salt was found to be correlated with the salts accessory mineral content (clay, other secondary minerals lost up to 3 wt % while pure halite salt lost less than 0.5 wt % water). Water released from salt at lower temperature was reversible and is attributed to clay hydration and dehydration processes. The analysis

143

Brine Migration Experimental Studies for Salt Repositories | Department of  

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

Brine Migration Experimental Studies for Salt Repositories Brine Migration Experimental Studies for Salt Repositories Brine Migration Experimental Studies for Salt Repositories Experiments were used to examine water content in Permian salt samples (Salado Formation) collected from the WIPP site. The profile of water release and movement is recognized as a function of temperature from 30 to 275 oC using classical gravimetric methods to measure weight loss as a result of heating. The amount of water released from heating the salt was found to be correlated with the salts accessory mineral content (clay, other secondary minerals lost up to 3 wt % while pure halite salt lost less than 0.5 wt % water). Water released from salt at lower temperature was reversible and is attributed to clay hydration and dehydration processes. The analysis

144

Electrolytic cell stack with molten electrolyte migration control  

DOE Patents (OSTI)

An electrolytic cell stack includes inactive electrolyte reservoirs at the upper and lower end portions thereof. The reservoirs are separated from the stack of the complete cells by impermeable, electrically conductive separators. Reservoirs at the negative end are initially low in electrolyte and the reservoirs at the positive end are high in electrolyte fill. During stack operation electrolyte migration from the positive to the negative end will be offset by the inactive reservoir capacity. In combination with the inactive reservoirs, a sealing member of high porosity and low electrolyte retention is employed to limit the electrolyte migration rate. 5 figs.

Kunz, H.R.; Guthrie, R.J.; Katz, M.

1987-03-17T23:59:59.000Z

145

Movements and Distribution of Northern Squawfish Downstream of Lower Snake River Dams Relative to the Migration of Juvenile Salmonids, 1992-1993 Completion Report.  

SciTech Connect

Northern squawfish Ptychocheilus oregonensis movements were monitored downstream of two lower Snake River dams during the juvenile salmonid migrations of 1992 and 1993. During a high flow year in 1993, the abundance of squawfish in the tailrace of Lower Granite Dam peaked in July, after the majority of juveniles had moved past Lower Granite Dam, and peak abundance was inversely related to river discharge. Few squawfish moved into the tailrace of Ice Harbor Dam in 1993 because of the extended period of spill. Distributions of squawfish in the tailrace of Lower Granite Dam varied between and within years and shifted in response to changing prey densities, flow patterns, water temperature, and diel cycles, but fish consistently used low velocity habitats. Data from Ice Harbor Dam is less extensive, but squawfish distributions there appeared to be affected by changing flow patterns and fish used low velocity habitats. The changes in distribution and abundance of squawfish in tailrace areas are evidence that predation on seaward migrating salmonids depends on the timing of migration and size and timing of runoff. Juvenile salmonids migrating in the spring and early summer will probably be less affected by squawfish predation in tailrace areas than salmon that migrate later in the summer.

Isaak, D.J.; Bjornn, T.C. (University of Idaho, Idaho Cooperative Fish and Wildlife Research Unit, Moscow, ID)

1996-03-01T23:59:59.000Z

146

LONG-TERM DYNAMICS OF RADIONUCLIDE VERTICAL MIGRATION IN SOILS OF THE CHERNOBYL NUCLEAR POWER PLANT EXCLUSION ZONE  

SciTech Connect

The radioactive fallout from the Chernobyl Nuclear Power Plant (ChNPP) accident consisted of fuel and condensation components. An important radioecological task associated with the late phase of the accident is to evaluate the dynamics of radionuclide mobility in soils. Identification of the variability (or invariability) in the radionuclide transfer parameters makes it possible to (1) accurately predict migration patterns and biological availability of radionuclides and (2) evaluate long-term exposure trends for the population who may reoccupy the remediated abandoned areas. In 1986-1987, a number of experimental plots were established within various tracts of the fallout plume to assist with the determination of the long-term dynamics of radionuclide vertical migration in the soils. The transfer parameters for {sup 137}Cs, {sup 90}Sr, and {sup 239,240}Pu in the soil profile, as well as their ecological half-time of the radionuclide residence (T{sub 1/2}{sup ecol}) values in the upper 5-cm thick soil layers of different grasslands were estimated at various times since the accident. Migration characteristics in the grassland soils tend to decrease as follows: {sup 90}Sr > {sup 137}Cs {ge} {sup 239,240}Pu. It was found that the {sup 137}Cs absolute T{sub 1/2}{sup ecol} values are 3-7 times higher than its radioactive decay half-life value. Therefore, changes in the exposure dose resulting from the soil deposited {sup 137}Cs now depend only on its radioactive decay. The {sup 90}Sr T{sub 1/2}{sup ecol} values for the 21st year after the fallout tend to decrease, indicating an intensification of its migration capabilities. This trend appears consistent with a pool of mobile {sup 90}Sr forms that grows over time due to destruction of the fuel particles.

Farfan, E.

2009-11-19T23:59:59.000Z

147

China 2050 Pathways Calculator | Open Energy Information  

Open Energy Info (EERE)

China 2050 Pathways Calculator China 2050 Pathways Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: China 2050 Pathways Calculator Agency/Company /Organization: China's Energy Research Institute (ERI), UK Department of Energy and Climate Change (DECC), UK Foreign and Commonwealth Office (FCO) Focus Area: Non-renewable Energy, Renewable Energy Phase: Evaluate Options, Prepare a Plan Topics: Low-carbon plans/TNAs/NAMAs, Resource assessment, Pathways analysis Resource Type: Guide/manual, Training materials, Lessons learned/best practices, Online calculator User Interface: Website Website: china-en.2050calculator.net/pathways/111011011011101101011010111101101 Country: China OpenEI Keyword(s): International Eastern Asia Language: English References: Global Energy Governance Reform, 3 October 2012[1]

148

Radionuclide distributions and migration mechanisms at shallow land burial sites. Annual report of research investigations on the distribution, migration and containment of radionuclides at Maxey Flats, Kentucky. [Maxey Flats  

SciTech Connect

Subsurface waters at Maxey Flats are anoxic systems with high alkalinity and high concentrations of dissolved ferrous ion. Americium and cobalt in these trench waters are made more soluble by the presence of EDTA, while strontium and cesium are unaffected under the same conditions. EDTA is the major organic complexing component in waste trench 27 leachate, but other polar, water-soluble organics are also present. Evidence points to the migration of plutonium between waste trench 27 and inert atmosphere wells as an EDTA complex. Polar organic compounds may influence the migration of /sup 90/Sr and /sup 137/Cs. The primary pathway of water entry into the waste burial trenches is through the trench caps, but major increases in water level have occurred in an experimental trench by subsurface flow. The areal distribution of radionuclides at Maxey Flats has been influenced by surface runoff, deposition from the evaporator plume, subsurface flow and the actions of burrowing animals or deep-rooted trees. Vegetal and surface contamination on site and near site are quite low, and only /sup 60/Co exceeds commonly observed fallout levels. Radionuclide concentrations in surface soil at Maxey Flats are comparable to concentrations resulting from normal fallout in other areas of high rainfall.

Kirby, L.J. (ed.)

1982-07-01T23:59:59.000Z

149

Marriage, Rank, and Seasonal Migration: Fractality in Social Structure  

E-Print Network (OSTI)

Chapter 7 Marriage, Rank, and Seasonal Migration: Fractality in Social Structure Every society and practices to see most clearly principles that are in place and how competing claims, including rank and leadership, are negotiated or resolved. For the nomad clan the principles of rank and equality are often

White, Douglas R.

150

Migration Decision for Hybrid Mobility in Reconfigurable Virtual Machines  

E-Print Network (OSTI)

Migration Decision for Hybrid Mobility in Reconfigurable Virtual Machines Song Fu and Cheng. The increasing popularity of Grid computing and Peer-to-Peer systems has renewed research interests in dynamic and fault tolerance significantly via hybrid mobility of services and computational agents. This paper

Xu, Cheng-Zhong

151

Migrating to Autodesk MapGuide Enterprise 2008  

E-Print Network (OSTI)

Migrating to Autodesk MapGuide® Enterprise 2008 Gordon Luckett ­ Arrow Geomatics Inc. GS318-2 This class focuses on moving existing Autodesk MapGuide 6.5 sites to Autodesk MapGuide Enterprise (or Open, and the author of the official Autodesk MapGuide and AutoCAD Map 3D courseware. Gordon works with many

Ahmad, Sajjad

152

Optimized Pre-Copy Live Migration for Memory Intensive Applications  

E-Print Network (OSTI)

Optimized Pre-Copy Live Migration for Memory Intensive Applications Khaled Z. Ibrahim, Steven Hofmeyr, Costin Iancu, Eric Roman Lawrence Berkeley National Laboratory Email: {kzibrahim, shofmeyr and fault tolerance. KVM and Xen use iterative pre-copy approaches which work well in practice

153

POPULATION Over 10,000 bowhead whales migrate annually through  

E-Print Network (OSTI)

of whales made during the spring of 2001 by North Slope Borough observers standing on sea ice north of Point contributed partial funding to Alaska's North Slope Borough for counting bowheads as they migrate past Point whales. Europeans and people of other nations commercially hunted bowhead whales for oil, meat

154

Volume 57, Number 1 (2014) 21 Assisted Migration  

E-Print Network (OSTI)

, and water and air quality) (Aubin and others 2011). Assisted migration is a complex topic rife with ethical extinction, such as planting Florida torreya in States north of Florida (Torreya Guardians 2008), (right). (Terms were reused from Ste-Marie and others 2011 and Winder and others 2011; distribution maps were

155

Migration to 7.4, Group Quotas, and More  

E-Print Network (OSTI)

, to grow to over 20k cores #12;RHIC/ATLAS Computing Facility Overview One instance for ATLAS 5100 slotsMigration to 7.4, Group Quotas, and More William Strecker-Kellogg Brookhaven National Lab #12;RHIC/ATLAS Computing Facility Overview Physics Dept. at Brookhaven National Lab--provides computing and storage

Liblit, Ben

156

Migration of Radioactive Wastes: Radionuclide Mobilization by Complexing Agents  

Science Journals Connector (OSTI)

...the Hanford, West Valley, and Maxey Flats facilities, respectively (29-31...Chalk River, West Valley, and Maxey Flats (31, 32). The use of EDTA and...transport at many radio-active waste disposal sites in this coun-try, and migration...

JEFFREY L. MEANS; DAVID A. CRERAR; JAMES O. DUGUID

1978-06-30T23:59:59.000Z

157

Greening the Cloud Using Renewable-Energy-Aware Service Migration*  

E-Print Network (OSTI)

1 Greening the Cloud Using Renewable-Energy-Aware Service Migration* Uttam Mandal, M. Farhan Habib this energy consumption, and hence, carbon footprint and green house gas emission of cloud computing, is contributing to increased energy consumption, and hence, carbon footprint and green house gas emission

California at Davis, University of

158

Migration Health MIDSA Report -December 2009 Table of Contents  

E-Print Network (OSTI)

-Sectoral Approach . . . . . . . . . . . . . . . . . . . . . . . 17 5.5 PHC Reform and Provision of Health Service . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.10 Burden on Health Care System . . . . . . . . . . . . . . . . . . . 18 5.11 Condom#12;Migration Health MIDSA Report - December 2009 Table of Contents 1 Foreword 1 2 Acronyms 3 3

Abolmaesumi, Purang

159

Fluid Migration During Ice/Rock Planetesimal Differentiation  

E-Print Network (OSTI)

/water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how...

Raney, Robert 1987-

2012-12-12T23:59:59.000Z

160

Development and application of chemical tools for investigating dynamic processes in cell migration  

E-Print Network (OSTI)

Cell migration is a dynamic process essential for many fundamental physiological functions, including wound repair and the immune response. Migration relies on precisely orchestrated events that are regulated in a spatially ...

Goguen, Brenda Nicole

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

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

Science Journals Connector (OSTI)

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

C. Nerín; R. Batlle

1998-12-05T23:59:59.000Z

162

Exploring Child Mortality Risks Associated with Diverse Patterns of Maternal Migration in Haiti  

Science Journals Connector (OSTI)

Internal migration is a salient dimension of adulthood in Haiti, particularly among women. Despite the high prevalence of migration in Haiti, it remains unknown whether Haitian women’s diverse patterns of migr...

Emily Smith-Greenaway; Kevin J. A. Thomas

2014-12-01T23:59:59.000Z

163

E-Print Network 3.0 - assessing field-scale migration Sample...  

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

to DB2 according... to deliver low-cost, reliable, and proven migrations to DB2. 12;Our standard offering includes: MigrationAssessment... the order in which your SAP...

164

Microarchitecture of Three-Dimensional Scaffolds Influences Cell Migration Behavior via Junction Interactions  

E-Print Network (OSTI)

Cell migration plays a critical role in a wide variety of physiological and pathological phenomena as well as in scaffold-based tissue engineering. Cell migration behavior is known to be governed by biochemical stimuli and ...

Harley, Brendan A. C.

165

Stability and Migration of Charged Oxygen Interstitials in ThO2...  

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

Stability and Migration of Charged Oxygen Interstitials in ThO2 and CeO2. Stability and Migration of Charged Oxygen Interstitials in ThO2 and CeO2. Abstract: Density functional...

166

Oxygen Vacancy Formation and Migration in CexTh_xO Solid Solution...  

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

Vacancy Formation and Migration in CexThxO Solid Solution. Oxygen Vacancy Formation and Migration in CexThxO Solid Solution. Abstract: A local-density approximation with the...

167

Migration by Soaring or Flapping Flight in Birds: The Relative Importance of Energy Cost and Speed  

Science Journals Connector (OSTI)

...Relative Importance of Energy Cost and Speed Anders Hedenstrom...mechanical theory, for (i) energy-selected migration and...minimization of transport costs probably cannot be the...significantly larger than in energy-selected migration...

1993-01-01T23:59:59.000Z

168

Orbits of radial migrators and non-migrators around a spiral arm in N-body simulations  

Science Journals Connector (OSTI)

......those behind the main spiral arm. To mirror the type 2g positive migrator, the...2012) 422:1363. Spitzer L. Jr , Schwarzschild M. ApJ (1951) 114:385. Spitzer L. Jr , Schwarzschild M. ApJ (1953) 118:106. Steinmetz......

Robert J. J. Grand; Daisuke Kawata; Mark Cropper

2014-01-01T23:59:59.000Z

169

Repeat Migration between Europe and the United States, 1870-1914  

E-Print Network (OSTI)

Leipzig: Teubner, 1907. Transatlantic Passenger Conferences1991. Keeling, Drew. “Transatlantic Shipping Cartels andTransportation Revolution and Transatlantic Migration, 1850-

Keeling, Drew

2009-01-01T23:59:59.000Z

170

Pathways and Mechanisms for Product Release in the Engineered Haloalkane Dehalogenases Explored Using Classical and Random Acceleration Molecular Dynamics Simulations  

Science Journals Connector (OSTI)

Eight mutants of the DhaA haloalkane dehalogenase carrying mutations at the residues lining two tunnels, previously observed by protein X-ray crystallography, were constructed and biochemically characterized. The mutants showed distinct catalytic efficiencies with the halogenated substrate 1,2,3-trichloropropane. Release pathways for the two dehalogenation products, 2,3-dichloropropane-1-ol and the chloride ion, and exchange pathways for water molecules, were studied using classical and random acceleration molecular dynamics simulations. Five different pathways, denoted p1, p2a, p2b, p2c, and p3, were identified. The individual pathways showed differing selectivity for the products: the chloride ion releases solely through p1, whereas the alcohol releases through all five pathways. Water molecules play a crucial role for release of both products by breakage of their hydrogen-bonding interactions with the active-site residues and shielding the charged chloride ion during its passage through a hydrophobic tunnel. Exchange of the chloride ions, the alcohol product, and the waters between the buried active site and the bulk solvent can be realized by three different mechanisms: (i) passage through a permanent tunnel, (ii) passage through a transient tunnel, and (iii) migration through a protein matrix. We demonstrate that the accessibility of the pathways and the mechanisms of ligand exchange were modified by mutations. Insertion of bulky aromatic residues in the tunnel corresponding to pathway p1 leads to reduced accessibility to the ligands and a change in mechanism of opening from permanent to transient. We propose that engineering the accessibility of tunnels and the mechanisms of ligand exchange is a powerful strategy for modification of the functional properties of enzymes with buried active sites.

Martin Klvana; Martina Pavlova; Tana Koudelakova; Radka Chaloupkova; Pavel Dvorak; Zbynek Prokop; Alena Stsiapanava; Michal Kuty; Ivana Kuta-Smatanova; Jan Dohnalek; Petr Kulhanek; Rebecca C. Wade; Jiri Damborsky

2009-01-01T23:59:59.000Z

171

Vacancy migration, adatom motion, a.nd atomic bistability on the GaAs(110) surface studied by scanning tunneling microscopy  

E-Print Network (OSTI)

Vacancy migration, adatom motion, a.nd atomic bistability on the GaAs(110) surface studied temperature are reported. The slow dynamic behavior of vacancies and As adatoms can be resolved within a time scale of about one minute, The vacancies and As adatoms are observed to move preferably along the [110

172

Syngas Upgrading to Hydrocarbon Fuels Technology Pathway  

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

This technology pathway case investigates the upgrading of woody biomass derived synthesis gas (syngas) to hydrocarbon biofuels. While this specific discussion focuses on the conversion of syngas via a methanol intermediate to hydrocarbon blendstocks, there are a number of alternative conversion routes for production of hydrocarbons through a wide array of intermediates from syngas. Future work will also consider the variations to this pathway to determine the most economically viable and lowest risk conversion route. Technical barriers and key research needs have been identified that should be pursued for the syngas-to-hydrocarbon pathway to be competitive with petroleum-derived gasoline-, diesel- and jet-range hydrocarbon blendstocks.

173

Inter-rack Live Migration of Multiple Virtual Machines Umesh Deshpande, Unmesh Kulkarni, and Kartik Gopalan  

E-Print Network (OSTI)

Inter-rack Live Migration of Multiple Virtual Machines Umesh Deshpande, Unmesh Kulkarni, and Kartik a distributed system for inter-rack live migration (IRLM), i.e., parallel live migration of multiple VMs across racks. The key performance objective of IRLM is to reduce the traffic load on the core network links

Gopalan, Kartik

174

Determinants and Income Effects of Commuting and Migration An empirical analysis for Germany after Unification  

E-Print Network (OSTI)

Determinants and Income Effects of Commuting and Migration An empirical analysis for Germany after differentials between East and West Germany led to massive commuting and migration flows. In this paper we: Human capital and income, Germany, commuting, migration, GSOEP JEL No.: J31, J61, O15 Address: Institute

Pfeifer, Holger

175

Combining Multiple Dimensions of Knowledge in API Migration Thiago Tonelli Bartolomei1  

E-Print Network (OSTI)

Combining Multiple Dimensions of Knowledge in API Migration Thiago Tonelli Bartolomei1 , Mahdi dimensions of knowledge about APIs so that we can support API migration by wrapping or transformation in new ways. That is, we assess wrapper-based API re-implementations and provide guidance for migrating API

Czarnecki, Krzysztof

176

What visibility conceals. Re-embedding Refugee Migration from Iraq Graldine Chatelard  

E-Print Network (OSTI)

What visibility conceals. Re-embedding Refugee Migration from Iraq GĂ©raldine Chatelard Research: This chapter aims at reconnecting the mass refugee migration from Iraq that has followed the fall of the regime Iraq through a combination of disciplinary approaches from the fields of the sociology of migration

Paris-Sud XI, Université de

177

Sphingosine-1-phosphate inhibits vascular smooth muscle cell migration by activating G??? and RhoA  

E-Print Network (OSTI)

inhibits the migration of VSMCs by activating G[?]?? and RhoA. S1P abolished the migration of VSMCs in response to platelet-derived growth factor (PDGF), a potent stimulator of VSMC migration. PDGF strongly induced the formation of lamellipodia, which...

Anthis, Nicholas J

2013-02-22T23:59:59.000Z

178

A Simulation Model for the Performance Evaluation for Migrating a Legacy Paulo Pinheiro da Silva  

E-Print Network (OSTI)

A Simulation Model for the Performance Evaluation for Migrating a Legacy System Paulo Pinheiro da a simulation model using CAPPLES. Peculiarities of the legacy system migration that affects the simulation of perfor- mance evaluation during migration. CAPPLES is based on simulation models. Indeed, analytical

Pinheiro da Silva, Paulo

179

Defining Active Catalyst Structure and Reaction Pathways from...  

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

Active Catalyst Structure and Reaction Pathways from ab Initio Molecular Dynamics and Operando XAFS: Dehydrogenation of Defining Active Catalyst Structure and Reaction Pathways...

180

2011 Pathways to Commercial Success: Technologies and Products...  

Energy Savers (EERE)

1 Pathways to Commercial Success: Technologies and Products Supported by the Fuel Cell Technologies Program 2011 Pathways to Commercial Success: Technologies and Products Supported...

Note: This page contains sample records for the topic "migration pathway timing" 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

2012 Pathways to Commercial Success: Technologies and Products...  

Energy Savers (EERE)

2 Pathways to Commercial Success: Technologies and Products Supported by the Fuel Cell Technologies Program 2012 Pathways to Commercial Success: Technologies and Products Supported...

182

Hydrogen Supply: Cost Estimate for Hydrogen Pathways-Scoping...  

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

Supply: Cost Estimate for Hydrogen Pathways-Scoping Analysis. January 22, 2002-July 22, 2002 Hydrogen Supply: Cost Estimate for Hydrogen Pathways-Scoping Analysis. January 22,...

183

2013 Pathways to Commercial Success: Technologies and Products...  

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

3 Pathways to Commercial Success: Technologies and Products Supported by the Fuel Cell Technologies Office 2013 Pathways to Commercial Success: Technologies and Products Supported...

184

SciTech Connect: Possible Pathways for Increasing Natural Gas...  

Office of Scientific and Technical Information (OSTI)

Conference: Possible Pathways for Increasing Natural Gas Use for Transportation (Presentation) Citation Details In-Document Search Title: Possible Pathways for Increasing Natural...

185

2009 Pathways to Commercial Success: Technologies and Products...  

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

Pathways to Commercial Success: Technologies and Products Supported by the Hydrogen, Fuel Cells and Infrastructure Technologies Program 2009 Pathways to Commercial Success:...

186

Biotic and abiotic pathways of phosphorus cycling in minerals...  

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

and abiotic pathways of phosphorus cycling in minerals and sediments: insights from oxygen isotopes in phosphate. Biotic and abiotic pathways of phosphorus cycling in minerals...

187

Energy Department Launches Web Tool to Explore Pathways to Clean...  

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

Energy Department Launches Web Tool to Explore Pathways to Clean Energy Economy Energy Department Launches Web Tool to Explore Pathways to Clean Energy Economy January 15, 2013 -...

188

Intervention of Phytohormone Pathways by Pathogen Effectors  

Science Journals Connector (OSTI)

...achieved mechanistically. For example, Colorado potato beetle larvae (Leptinotarsa decemlineata...antagonizes the JA pathway, allowing enhanced Colorado potato beetle larval growth, although...virus (TSWV), which is vectored by western flower thrips (WFT) Frankliniella occidentalis...

Kemal Kazan; Rebecca Lyons

2014-06-10T23:59:59.000Z

189

Secure process migration in cloud for load balancing and energy efficiency  

Science Journals Connector (OSTI)

Cloud computing is the latest trend in the world of computers. Virtualisation is the building block for cloud. In IAAS, cloud resources are allocated to the user in the form of virtual machines (VMs). VMs generally have lower resources and have a good chance of getting overloaded. Overload can happen in terms of CPU, memory or IO. All these three resources are divided among the different VMs running on a physical machine. So even if a physical machine is not overloaded, a VM running on it may get overloaded. Considering the nature of the loads, this paper proposes a load balancing solution on basis of CPU, memory and IO using process migration between the VMs of the cloud. The approach balances the load in such a way that the use of energy efficiency techniques like DVFS can be maximised. Due to the multi-tenant model of the cloud, a lot of new security issues have come up. Process migration also presents new security issues. This paper identifies such security issues and proposes solution to them. A proof of concept is provided which demonstrates the feasibility of the approach by proving that improved response times can be achieved even at lower energy consumptions.

Rahul Bhalerao; Madhur Bajpai; Avinash Jadhao; Shashikant Zalte; Jibi Abraham

2014-01-01T23:59:59.000Z

190

Carbon migration in 5Cr-0.5Mo/21Cr-12Ni dissimilar metal welds  

SciTech Connect

The carbon migration between a ferritic steel and an austenitic steel was studied in submerged arc-welded 5Cr-0.5Mo/21Cr-12Ni dissimilar metal welds (DMWs) after aging at 500 C for various times and after long-term service in technical practice. The distribution of carbon, chromium, nickel, and iron in the areas around the weld interface was determined by electron probe microanalysis, and the microstructural aspect in the carbon-depleted/enriched zone was characterized by optical microscopy and transmission electron microscopy (TEM). Furthermore, the precipitation sequences and composition characteristics of the carbides were identified by diffraction pattern microanalysis and energy-dispersive X-ray (EDX) microanalysis. It was found (1) that there exists a coherent relationship between intracrystalline M{sub 23}C{sub 6} and the austenitic matrix; (2) that the composition of M{sub 23}C{sub 6} in the carbon-enriched zone is independent of the duration of aging and service; (3) that the maximum carbon concentration is determined by the carbide type, the composition characteristic of precipitated carbides, and the concentration of carbide-forming Cr adjacent to the weld interface in the carbon-enriched zone; and (4) that the carbon migration in the 5Cr-0.5Mo/21Cr-12Ni DMWs can be described by a diffusion model.

Huang, M.L.; Wang, L. [Dalian Univ. of Technology (China). Dept. of Materials Engineering

1998-12-01T23:59:59.000Z

191

Hydroxide Degradation Pathways for Substituted Trimethylammonium Cations: A DFT Study  

SciTech Connect

Substituted trimethylammonium cations serve as small molecule analogues for tetherable cations in anion exchange membranes. In turn, these membranes serve as the basis for alkaline membrane fuel cells by allowing facile conduction of hydroxide. As these cations are susceptible to hydroxide attack, they degrade over time and greatly limit the lifetime of the fuel cell. In this research, we performed density functional theory calculations to investigate the degradation pathways of substituted trimethylammonium cations to probe the relative durability of cation tethering strategies in alkyl and aromatic tethers. Our results show that significant changes in calculated energy barriers occur when substitution groups change. Specifically, we have found that, when available, the Hofmann elimination pathway is the most vulnerable pathway for degradation; however, this barrier is also found to depend on the carbon chain length and number of hydrogens susceptible to Hofmann elimination. S{sub N}2 barriers were also investigated for both methyl groups and substitution groups. The reported findings give important insight into potential tethering strategies for trimethylammonium cations in anion exchange membranes.

Long, H.; Kim, K.; Pivovar, B. S.

2012-05-03T23:59:59.000Z

192

Smolt Monitoring Program, Part II, Volume II, Migrational Characteristics of Columbia Basin Salmon and Steelhead Trout, 1985 Annual Report.  

SciTech Connect

Volume I of this report describes the results of travel time monitoring and other migrational characteristics of yearling and sub-yearling chinook salmon (Oncorhynchus tshawytscha), sockeye salmon (Oncorhynchus nerka), and steelhead trout (Salmo gairdneri). This volume presents the freeze brand data used in the analysis of travel time for Lower Granite, Rock Island, McNary, and John Day dams. Brand recoveries for Lower Monumental dam also are presented. Summary of data collection procedures and explanation of data listings are presented in conjunction with the mark recapture data.

Fish Passage Center

1986-02-01T23:59:59.000Z

193

,,"PARS II Interim Migration Template"  

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

" " ,,"PARS II Interim Migration Template" ,,"Fields","Data" ,,"DOE Project ID:","DOE Project # and Project Name" ,,"Year:","Please select a Year" ,,"Month:","Please select a Month" ,,"Fields","Data (Entered in $K) [Data Entry field]" ,,"BCWS ($K):",0 ,,"BCWP ($K):",0 ,,"ACWP ($K):",0 ,,"Management Reserves Remaining ($K):",0 ,,"Percent Complete (%):",0 ,,"Instructions" ,,"1. Log into PARS II" ,,"2. Select the appropriate Project" ,,"3. While still on the Projects screen, click on ""Attachments""" ,,"4. Click on ""Add"""

194

Dislocation kink migration energies and the Frenkel-Kontorowa model  

Science Journals Connector (OSTI)

An analytic solution of the Peierls pinning energy EP in the discrete Frenkel-Kontorowa (FK) model is used to obtain estimates of the second-order Peierls stress ?2P controlling dislocation kink motion. From the Dorn-Rajnak model the kink migration energy is shown to be the Peierls pinning energy EP in the FK model. The required parameters are related to features of the generalized stacking fault surface. Examples illustrate use of the approach.

B. Joós and M. S. Duesbery

1997-05-01T23:59:59.000Z

195

A Migrated Aortic Stent Graft Causing Erosive Spondylopathy  

SciTech Connect

We report about a patient presenting with back pain 4 months after an uneventful endovascular implantation of an aortic stent graft. Computed tomography scan revealed a migration of the stent with consecutive endoleakage, kink formation, and movement of the stent toward the spine, which caused destruction of the aortic wall as well as vertebral necrosis. Explantation of the stent and replacement of the native aorta relieved the patient of his symptoms.

Gestrich, Christopher, E-mail: christopher.gestrich@ukb.uni-bonn.de; Probst, Chris, E-mail: chris.probst@ukb.uni-bonn.de [Universitaetsklinikum Bonn, Department of Cardiac Surgery (Germany)] [Universitaetsklinikum Bonn, Department of Cardiac Surgery (Germany); Wilhelm, Kai, E-mail: kai.wilhelm@ek-bonn.de [Johanniterkrankenhaus Bonn, Department of Radiology (Germany)] [Johanniterkrankenhaus Bonn, Department of Radiology (Germany); Schiller, Wolfgang, E-mail: wolfgang.schiller@ukb.uni-bonn.de [Universitaetsklinikum Bonn, Department of Cardiac Surgery (Germany)] [Universitaetsklinikum Bonn, Department of Cardiac Surgery (Germany)

2013-12-15T23:59:59.000Z

196

Ion beam analyses of radionuclide migration in heterogeneous rocks  

Science Journals Connector (OSTI)

The migration of radionuclides (RN) in the environment is a topic of general interest for its implications on public health and it is an issue for the long-term safety studies of deep geological repositories (DGR) for high-level radioactive waste. The role played by colloids on RN migration is also of great concern. Diffusion and sorption are fundamental mechanisms controlling RN migration in rocks and many experimental approaches are applied to determine transport parameters for low sorbing RN in homogeneous rocks. However it is difficult to obtain relevant data for high sorbing RN or colloids for which diffusion lengths are extremely short or within heterogeneous rocks where transport might be different in different minerals. The ion beam techniques Rutherford Backscattering Spectrometry (RBS) and micro-Particle Induced X-Ray Emission (?PIXE) rarely applied in the field were selected for their micro-analytical potential to study RN diffusion and surface retention within heterogeneous rocks. Main achievements obtained during last 12 years are highlighted.

Valentino Rigato

2013-01-01T23:59:59.000Z

197

Migration and retention of elements at the Oklo natural reactor  

SciTech Connect

The Oklo natural reactor, Gabon, permits study of fission-produced elemental behavior in a natural geologic environment. The uranium ore that sustained fission reactions formed about 2 billion years before present (BYBP), and the reactor was operative for about 5 x 10/sup 5/ yrs between about 1.95 to 2 BYBP. The many tons of fission products can, for the most part, be studied for their abundance and distribution today. Since reactor shutdown, many fissiogenic elements have not migrated from host pitchblende, and several others have migrated only a few tens of meters from the reactor ore. Only Xe and Kr have apparently been largely removed from the reactor zones. An element by element assessment of the Oklo rocks' ability to retain the fission products, and actinides and radiogenic Pb and Bi as well, leads to the conclusion that no widespread migration of the elements occurred. This suggests that rocks with more favorable geologic characteristics are indeed well suited for consideration for the storage of radioactive waste.

Brookins, D.G.

1982-01-01T23:59:59.000Z

198

U-216: HP StorageWorks File Migration Agent Buffer Overflows Let Remote  

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

6: HP StorageWorks File Migration Agent Buffer Overflows Let 6: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code U-216: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code July 19, 2012 - 7:14am Addthis PROBLEM: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code PLATFORM: HP StorageWorks File Migration Agent ABSTRACT: Two vulnerabilities were reported in HP StorageWorks File Migration Agent. reference LINKS: SecurityTracker Alert ID: 1027281 ZDI-12-127 ZDI-12-126 IMPACT ASSESSMENT: High Discussion: The vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of HP StorageWorks File Migration Agent. Authentication is not required to exploit this vulnerability. 1. (ZDI-12-127) The specific flaw exists within the HsmCfgSvc.exe service

199

U-216: HP StorageWorks File Migration Agent Buffer Overflows Let Remote  

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

U-216: HP StorageWorks File Migration Agent Buffer Overflows Let U-216: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code U-216: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code July 19, 2012 - 7:14am Addthis PROBLEM: HP StorageWorks File Migration Agent Buffer Overflows Let Remote Users Execute Arbitrary Code PLATFORM: HP StorageWorks File Migration Agent ABSTRACT: Two vulnerabilities were reported in HP StorageWorks File Migration Agent. reference LINKS: SecurityTracker Alert ID: 1027281 ZDI-12-127 ZDI-12-126 IMPACT ASSESSMENT: High Discussion: The vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of HP StorageWorks File Migration Agent. Authentication is not required to exploit this vulnerability.

200

A distributed hard real-time Java system for high mobility components  

E-Print Network (OSTI)

applications to adapt to changes in user requirements or to external events. We describe how we achieve run-time recon?guration in distributed Java applications by appropriately migrating servers. Guaranteed-rate schedulers at the servers provide...

Rho, Sangig

2005-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Migration of antimony from PET trays into food simulant and food: determination of Arrhenius parameters and comparison of predicted and measured migration data  

E-Print Network (OSTI)

parameters and comparison of predicted and measured migration data M. Haldimann*, A. Alt, A. Blanc, K) Migration experiments with small sheets cut out from ovenable PET trays were performed in two-sided contact a wide temperature range from which the activation energy (Ea) of 188 Ă? 36 kJ molĂ?1 and the pre

Short, Daniel

202

Infrastructure Required for Tag/Mark Application, Detection, and Recovery Tag/Mark & release Juvenile fish migration Adult fish migration Mortality*Ocean residency  

E-Print Network (OSTI)

Juvenile fish migration Adult fish migration Mortality*Ocean residency Adipose fin clip Marking trailers N processing Otolith Insulated box, thermal chilling system, lab processing, smolt traps N/A Fish traps, fish *Fish mortality data may be collected at any stage of the fish life cycle from harvest, recovered

203

Variations in permeability and fine particle migrations in unconsolidated sandstones submitted to saline circulations  

SciTech Connect

Samples of unconsolidated clayey sandstone were submitted to percolations with NaCl and CaCl{sub 2} solutions with ionic strengths I = 0.01 and I = 2 at 20, 60 and 90{degrees}C. The permeability decreased as a function of time for all the samples examined. When the temperature rose from 20 to 90{degrees}C, permeability decreased for the I = 0.01 solutions, but it increased for the I = 2 solutions. The fluid circulations were accompanied by an entrainment of fine particles that was all the greater as the solutions became more diluted and fluid. This behavior, explained by the phenomenon of clay flocculation-deflocculation, is governed by the values of the attraction and repulsion potentials between particles. The calculation of the forces present shows that the electrokinetic phenomena govern flocculation and migration of fine particles in sandstone.

Baudracco, J. (Univ. Paul Sabatier, Lab. de Mineralogie, U.A. 67, 39 Allees Jules Guesde, F-31400 Toulouse (FR))

1990-01-01T23:59:59.000Z

204

Fuel Pathway Integration Technical Team Roadmap  

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

Fuel Pathway Integration Fuel Pathway Integration Technical Team Roadmap June 2013 This roadmap is a document of the U.S. DRIVE Partnership. U.S. DRIVE (Driving Research and Innovation for Vehicle efficiency and Energy sustainability) is a voluntary, non-binding, and nonlegal partnership among the U.S. Department of Energy; USCAR, representing Chrysler Group LLC, Ford Motor Company, and General Motors; Tesla Motors; five energy companies - BP America, Chevron Corporation, Phillips 66 Company, ExxonMobil Corporation, and Shell Oil Products US; two utilities - Southern California Edison and DTE Energy; and the Electric Power Research Institute (EPRI). The Fuel Pathway Integration Technical Team is one of 12 U.S. DRIVE technical teams ("tech teams") whose mission is to accelerate the development of pre-competitive and innovative technologies to enable

205

Plant phytotoxicity: A self-regulating pathway  

SciTech Connect

During the session on regulating sludge utilization, held at BioCycle's 19th Annual National conference on Composting and Recycling, a participant asked one of the speakers, Dr. Alan Rubin of the US EPA's Office of Water Regulations and Standards, why the plant phytotoxicity pathway should be the most limiting, especially when there is no concern about human or animal health. The question related specifically to copper being the most limiting metal concentration limit for many sludge composting and land application programs under the proposed Part 503 regulations. And the most limiting pathway for copper is Pathway 7, sludge-soil-plant phytotoxicity. Rubin responded that the regulation is supposed to protect both human health and the environment, e.g. plants and animals other than humans.

Not Available

1989-07-01T23:59:59.000Z

206

Nopal I uranium deposit: A study of radionuclide migration  

SciTech Connect

This summary reports on activities of naturally-occurring radionuclides for the Nopal I uranium deposit located in the Pena Blanca Uranium District, Chihuahua, Mexico. Activities were determined using gamma-ray spectroscopy. In addition, data reduction procedures and sample preparation (for Rn retention) will be discussed here. Nopal I uranium deposit has been identified as one of the most promising sites for analogue studies to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. The objective of this research is to study the potential for radionuclide migration by testing whether any portion of the deposit is in secular equilibrium.

Wong, V.; Anthony, E.; Goodell, P. [Univ. of Texas, El Paso, TX (United States)

1996-12-01T23:59:59.000Z

207

1Gyeongbokgung Challenges and Development Pathways for  

E-Print Network (OSTI)

1Gyeongbokgung #12;2 Challenges and Development Pathways for Fusion Nuclear Science and Technology OUTLINE · Fusion Research Transition to Fusion Science and Engineering · DEMO Goal, ITER · FNST definition and Blanket Principles and Interactions · Blanket Types and Technical Issues · Science-Based Framework

Abdou, Mohamed

208

Final report on the Pathway Analysis Task  

SciTech Connect

The Pathway Analysis Task constituted one of several multi-laboratory efforts to estimate radiation doses to people, considering all important pathways of exposure, from the testing of nuclear devices at the Nevada Test Site (NTS). The primary goal of the Pathway Analysis Task was to predict radionuclide ingestion by residents of Utah, Nevada, and portions of seven other adjoining western states following radioactive fallout deposition from individual events at the NTS. This report provides comprehensive documentation of the activities and accomplishments of Colorado State University`s Pathway Analysis Task during the entire period of support (1979--91). The history of the project will be summarized, indicating the principal dates and milestones, personnel involved, subcontractors, and budget information. Accomplishments, both primary and auxiliary, will be summarized with general results rather than technical details being emphasized. This will also serve as a guide to the reports and open literature publications produced, where the methodological details and specific results are documented. Selected examples of results on internal dose estimates are provided in this report because the data have not been published elsewhere.

Whicker, F.W.; Kirchner, T.B. [Colorado State Univ., Fort Collins, CO (United States)

1993-04-01T23:59:59.000Z

209

Whole Algae Hydrothermal Liquefaction Technology Pathway  

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

This technology pathway case investigates the feasibility of using whole wet microalgae as a feedstock for conversion via hydrothermal liquefaction. Technical barriers and key research needs have been assessed in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

210

Energy use by biological protein transport pathways  

E-Print Network (OSTI)

residing within energy-conserving membranes use transmembrane ion gradients to drive substrate transport receptors impart specificity to a targeting route, and transport across or into the membrane is typicallyEnergy use by biological protein transport pathways Nathan N. Alder1 and Steven M. Theg2 1

Economou, Tassos

211

Disulfide-Linked Protein Folding Pathways  

E-Print Network (OSTI)

Disulfide-Linked Protein Folding Pathways Bharath S. Mamathambika1,3 and James C. Bardwell2,3, 1 of protein folding is difficult because it involves the identification and characterization of folding to protein folding in vitro and in vivo. 211 Click here for quick links to Annual Reviews content online

Bardwell, James

212

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Juveniles, 2007-2008  

SciTech Connect

This report provides results from an ongoing project to monitor the migration behavior and survival of wild juvenile spring/summer Chinook salmon in the Snake River Basin. Data reported is from detections of PIT tagged fish during late summer 2007 through mid-2008. Fish were tagged in summer 2007 by the National Marine Fisheries Service (NMFS) in Idaho and by the Oregon Department of Fish and Wildlife (ODFW) in Oregon. Our analyses include migration behavior and estimated survival of fish at instream PIT-tag monitors and arrival timing and estimated survival to Lower Granite Dam. Principal results from tagging and interrogation during 2007-2008 are: (1) In July and August 2007, we PIT tagged and released 7,390 wild Chinook salmon parr in 12 Idaho streams or sample areas. (2) Overall observed mortality from collection, handling, tagging, and after a 24-hour holding period was 1.4%. (3) Of the 2,524 Chinook salmon parr PIT tagged and released in Valley Creek in summer 2007, 218 (8.6%) were detected at two instream PIT-tag monitoring systems in lower Valley Creek from late summer 2007 to the following spring 2008. Of these, 71.6% were detected in late summer/fall, 11.9% in winter, and 16.5% in spring. Estimated parr-to-smolt survival to Lower Granite Dam was 15.5% for the late summer/fall group, 48.0% for the winter group, and 58.5% for the spring group. Based on detections at downstream dams, the overall efficiency of VC1 (upper) or VC2 (lower) Valley Creek monitors for detecting these fish was 21.1%. Using this VC1 or VC2 efficiency, an estimated 40.8% of all summer-tagged parr survived to move out of Valley Creek, and their estimated survival from that point to Lower Granite Dam was 26.5%. Overall estimated parr-to-smolt survival for all summer-tagged parr from this stream at the dam was 12.1%. Development and improvement of instream PIT-tag monitoring systems continued throughout 2007 and 2008. (4) Testing of PIT-tag antennas in lower Big Creek during 2007-2008 showed these antennas (and anchoring method) are not adequate to withstand high spring flows in this drainage. Future plans involve removing these antennas before high spring flows. (5) At Little Goose Dam in 2008, length and/or weight were taken on 505 recaptured fish from 12 Idaho stream populations. Fish had grown an average of 40.1 mm in length and 10.6 g in weight over an average of 288 d. Their mean condition factor declined from 1.25 at release (parr) to 1.05 at recapture (smolt). (6) Mean release lengths for detected fish were significantly larger than for fish not detected the following spring and summer (P < 0.0001). (7) Fish that migrated through Lower Granite Dam in April and May were significantly larger at release than fish that migrated after May (P < 0.0001) (only 12 fish migrated after May). (8) In 2008, peak detections at Lower Granite Dam of parr tagged during summer 2007 (from the 12 stream populations in Idaho and 4 streams in Oregon) occurred during moderate flows of 87.5 kcfs on 7 May and high flows of 197.3 kcfs on 20 May. The 10th, 50th, and 90th percentile passage occurred on 30 April, 11 May, and 23 May, respectively. (9) In 2007-2008, estimated parr-to-smolt survival to Lower Granite Dam for Idaho and Oregon streams (combined) averaged 19.4% (range 6.2-38.4% depending on stream of origin). In Idaho streams the estimated parr-to-smolt survival averaged 21.0%. This survival was the second highest since 1993 for Idaho streams. Relative parr densities were lower in 2007 (2.4 parr/100 m2) than in all previous years since 2000. In 2008, we observed low-to-moderate flows prior to mid-May and relatively cold weather conditions throughout the spring migration season. These conditions moved half of the fish through Lower Granite Dam prior to mid-May; then high flows moved 50 to 90% of the fish through the dam in only 12 days. Clearly, complex interrelationships of several factors drive the annual migrational timing of the stocks.

Achord, Stephen; Sandford, Benjamin P.; Hockersmith, Eric E. [Fish Ecology Division, Northwest Fisheries Science Center

2009-07-09T23:59:59.000Z

213

Climate migration : preparedness informed policy opportunities identified during field research in Bolivia, Bangladesh and Maldives.  

E-Print Network (OSTI)

??High levels of human mobility brought on by global megatrends such as population growth, urbanisation, globalisation, coastward migration, environmental degradation, resource depletion, and sprawling of… (more)

Luetz, Johannes M.

2013-01-01T23:59:59.000Z

214

Migration and oil industry employment of north slope Alaska natives. Technical report (Final)  

SciTech Connect

This study has two purposes: To find out why people migrate to and within the North Slope; To find out if working for the oil industry at Prudhoe Bay or Kuparuk makes North Slope Natives more likely to migrate. This is the first study of Alaska Native migration based on interviews of Alaska North Slope Native migrants, of non-Native migrants, and of Alaska North Slope Natives who are oil industry employees. It has two major chapters: one on household migration and the other on oil industry employment. The report is based on interviews conducted in March 1992.

Marshall, D.

1993-01-01T23:59:59.000Z

215

E-Print Network 3.0 - annual butterfly migration Sample Search...  

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

Summary: to Fig. 2 The annual migration of Aphrissa butterflies across the Isthmus of Panama from the wet Atlantic... most migrants evade either drought or cold, nymphalid and...

216

From Iraq to the United States: Justice, Human Rights, and Migration.  

E-Print Network (OSTI)

??This thesis focuses on justice, human rights, and migration in Iraq. It explores the ideas of justice and human rights, and how they influence the… (more)

Biya, Diana J.

2014-01-01T23:59:59.000Z

217

The Migration Industry in the Mexico-U.S. Migratory System  

E-Print Network (OSTI)

Transportation Revolution and Transatlantic Migration, 1950-representatives of transatlantic transportation companies. 1in the context of the transatlantic flows of the late 19 th

Hernandez-Leon, Ruben

2005-01-01T23:59:59.000Z

218

MIGRATION OF GAS-LIQUID INCLUSIONS IN KC l AND NaC l SINGLE CRYSTALS  

E-Print Network (OSTI)

and Department of Nuclear Engineering, University ofAlbert J. Machiels Nuclear Engineering Prog:ram UniversitySubmitted to Nuclear Science and Engineering MIGRATION OF

Olander, Donald R.

2013-01-01T23:59:59.000Z

219

Migration of Water Pulse Through Fractured Porous Media  

SciTech Connect

Contaminant transport from waste-disposal sites is strongly affected by the presence of fractures and the degree of fracture-matrix interaction. Characterization of potential contaminant plumes at such sites is difficult, both experimentally and numerically. Simulations of water flow through fractured rock were performed to examine the penetration depth of a large pulse of water entering such a system. Construction water traced with lithium bromide was released during the excavation of a tunnel at Yucca Mountain, Nevada, which is located in an unsaturated fractured tuff formation. Modeling of construction-water migration is qualitatively compared with bromide-to-chloride (Br/CI) ratio data for pore-water salts extracted from drillcores. The influences of local heterogeneities in the fracture network and variations in hydrogeologic parameters were examined by sensitivity analyses and Monte Carlo simulations. The simulation results are qualitatively consistent with the observed Br/CI signals, although these data may only indicate a minimum penetration depth, and water may have migrated further through the fracture network.

S. Finsterle; J. T. Fabryka-Martin; J. S. Y. Wang

2001-06-06T23:59:59.000Z

220

Tough Times for the Muskrats  

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

Tough Times for the Muskrats Tough Times for the Muskrats Nature Bulletin No. 3 February 24, 1945 Forest Preserve District of Cook County Clayton F Smith, President Roberts Mann, Superintendent of Conservation TOUGH TIMES FOR THE MUSKRATS This has been a sorry year for the muskrats. The long drought, last summer and fall, dried up many of the smaller marshes and ponds where they had been living and forced them to migrate overland to new homes. Many undoubtedly were killed while enroute by mink, hawks, or dogs. Even the larger marshes and ponds were made smaller and more shallow by the drought and now this severe winter, with its long, bitter cold, has caused many of them to freeze solid to the very bottom; thus sealing the muskrats up in their lodges and preventing them from swimming around under the ice to get food.

Note: This page contains sample records for the topic "migration pathway timing" 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

Kinetic Pathways of Order-Disorder and Order-Order Transitions in Weakly Segregated Microstructured Systems  

Science Journals Connector (OSTI)

The kinetics of hexagonal to disordered and hexagonal to body-centered-cubic phase transitions in weakly segregated, microstructured systems (e.g., diblock copolymers) is studied using a time-dependent Ginzburg-Landau (TDGL) approach. Both computer simulation of the TDGL equation and analysis of a simplified two-mode model reveal nontrivial pathways during the transition.

Shuyan Qi and Zhen-Gang Wang

1996-03-04T23:59:59.000Z

222

Emissions pathways, climate change, and impacts on California  

SciTech Connect

The magnitude of future climate change depends substantially on the greenhouse gas emission pathways we choose. Here we explore the implications of the highest and lowest Intergovernmental Panel on Climate Change emissions pathways for climate change and associated impacts in California. Based on climate projections from two state-of-the-art climate models with low and medium sensitivity (Parallel Climate Model and Hadley Centre Climate Model, version 3, respectively), we find that annual temperature increases nearly double from the lower B1 to the higher A1fi emissions scenario before 2100. Three of four simulations also show greater increases in summer temperatures as compared with winter. Extreme heat and the associated impacts on a range of temperature-sensitive sectors are substantially greater under the higher emissions scenario, with some interscenario differences apparent before midcentury. By the end of the century under the B1 scenario, heatwaves and extreme heat in Los Angeles quadruple in frequency while heat-related mortality increases two to three times; alpine/subalpine forests are reduced by 50-75 percent; and Sierra snowpack is reduced 30-70 percent. Under A1fi, heatwaves in Los Angeles are six to eight times more frequent, with heat-related excess mortality increasing five to seven times; alpine/subalpine forests are reduced by 75-90 percent; and snowpack declines 73-90 percent, with cascading impacts on runoff and streamflow that, combined with projected modest declines in winter precipitation, could fundamentally disrupt California's water rights system. Although interscenario differences in climate impacts and costs of adaptation emerge mainly in the second half of the century, they are strongly dependent on emissions from preceding decades.

Hayhoe, Katharine; Cayan, Daniel; Field, Christopher B.; Frumhoff, Peter C.; Maurer, Edwin P.; Miller, Norman L.; Moser, Susanne C.; Schneider, Stephen H.; Cahill, Kimberly Nicholas; Cleland, Elsa E.; Dale, Larry; Drapek, Ray; Hanemann, R. Michael; Kalkstein, Laurence S.; Lenihan, James; Lunch, Claire K.; Neilson, Ronald P.; Sheridan, Scott C.; Verville, Julia H.

2004-06-01T23:59:59.000Z

223

Oncogenic Pathway Combinations Predict Clinical Prognosis in Gastric Cancer  

E-Print Network (OSTI)

Many solid cancers are known to exhibit a high degree of heterogeneity in their deregulation of different oncogenic pathways. We sought to identify major oncogenic pathways in gastric cancer (GC) with significant relationships ...

Ooi, Chia Huey

224

NextSTEPS (Sustainable Transportation Energy Pathways) PROGRAM SUMMARY  

E-Print Network (OSTI)

NextSTEPS (Sustainable Transportation Energy Pathways) PROGRAM SUMMARY Institute of Transportation in January 2011, building on the many advances of our Sustainable Transportation Energy Pathways (STEPS Analyze sustainability issues including land use change effects, water use, resource constraints

California at Davis, University of

225

Bioenergy Technologies Office R&D Pathways: Algal Lipid Upgrading  

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

Algal lipid upgrading is one of eight priority pathways chosen to convert biomass into hydrocarbon fuels by the Bioenergy Technologies Office. These pathways were down-selected from an initial list of 18.

226

The Geometric Structure of the Brain Fiber Pathways  

Science Journals Connector (OSTI)

...trajectories (violet). (B) Major pathways in deep white matter in the rhesus frontal lobe (from top left), including SLF 1-3, and the cingulum bundle (CB) (blue) were components of a single path-grid. Their intersecting pathways (green...

Van J. Wedeen; Douglas L. Rosene; Ruopeng Wang; Guangping Dai; Farzad Mortazavi; Patric Hagmann; Jon H. Kaas; Wen-Yih I. Tseng

2012-03-30T23:59:59.000Z

227

EIS-0465: Mid-Atlantic Power Pathway Transmission Line Project...  

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

5: Mid-Atlantic Power Pathway Transmission Line Project in Maryland and Delaware EIS-0465: Mid-Atlantic Power Pathway Transmission Line Project in Maryland and Delaware March 4,...

228

Decomposition Pathway of Ammonia Borane on the Surface of nano...  

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

Decomposition Pathway of Ammonia Borane on the Surface of nano-BN. Decomposition Pathway of Ammonia Borane on the Surface of nano-BN. Abstract: Ammonia borane (AB) is under...

229

Degradation of Ionic Pathway in PEM Fuel Cell Cathode  

SciTech Connect

The degradation of the ionic pathway throughout the catalyst layer in proton exchange membrane fuel cells was studied under an accelerated stress test of catalyst support (potential hold at 1.2 V). Electrochemical behaviors of the cathode based on graphitic mesoporous carbon supported Pt catalyst were examined using electrochemical impedance spectroscopy and cyclic voltammetry. Impedance data were plotted and expressed in the complex capacitance form to determine useful parameters in the transmission line model: the double-layer capacitance, peak frequency, and ionic resistance. Electrochemical surface area and hydrogen crossover current through the membrane were estimated from cyclic voltammogram, while cathode Faradaic resistance was compared with ionic resistance as a function of test time. It was observed that during an accelerated stress test of catalyst support, graphitic mesoporous carbon becomes hydrophilic which increases interfacial area between the ionomer and the catalyst up to 100 h. However, the ionic resistance in the catalyst layer drastically increases after 100 h with further carbon support oxidation. The underlying mechanism has been studied and it was found that significant degradation of ionic pathway throughout the catalyst layer due to catalyst support corrosion induces uneven hydration and mechanical stress in the ionomer.

Park, Seh Kyu; Shao, Yuyan; Wan, Haiying; Viswanathan, Vilayanur V.; Towne, Silas A.; Rieke, Peter C.; Liu, Jun; Wang, Yong

2011-11-12T23:59:59.000Z

230

Ad Lucem: Modeling of Market Transformation Pathways Workshop Agenda  

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

This document details the agenda for the DOE Ad Lucem: Modeling of Market Transformation Pathways Workshop on Feb. 17, 2012.

231

The low dose damage response pathways in the mouse mammary glands depends  

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

low dose damage response pathways in the mouse mammary glands depends low dose damage response pathways in the mouse mammary glands depends on genotype, tissue compartment, exposure regimen, and sampling times Joe Gray & Andrew Wyrobek Lawrence Berkeley National Laboratory Abstract The objectives of this research are to characterize the early and persistent low-dose and adaptive response (AR) damage surveillance networks in mammary glands of radiation sensitive and resistant strains of mice to identify the molecular signatures/mechanisms associated with nonlinear modifications of risk for mammary gland cancer. Our approach uses low-dose exposure regimens that have been reported to induce mammary gland cancer in sensitive strains to determine whether low-dose induced pathways are differentially expressed in epithelial or stromal cells and to determine

232

Gas Migration from Closed Coal Mines to the Surface RISK ASSESSMENT METHODOLOGY AND PREVENTION MEANS  

E-Print Network (OSTI)

Gas Migration from Closed Coal Mines to the Surface RISK ASSESSMENT METHODOLOGY AND PREVENTION to the surface is especially significant in the context of coal mines. This is because mine gas can migrate of the scheduled closure of all coal mining operations in France, INERIS has drawn up, at the request of national

Paris-Sud XI, Université de

233

Interregional Migration in Germany: Characteristics and Effects for Regions and Migrants  

E-Print Network (OSTI)

Interregional Migration in Germany: Characteristics and Effects for Regions and Migrants Christian of economic activity in East Germany initiated enormous migration flows from East to West Germany. People from East Germany moved towards West Germany, where wages are higher and em- ployment opportunities are more

Pfeifer, Holger

234

Incorporating Quality Requirements in Software Migration Process* Dept. of Electrical & Computer Engineering  

E-Print Network (OSTI)

1 Incorporating Quality Requirements in Software Migration Process* Ying Zou Dept. of Electrical & Computer Engineering Queen's University Kingston, ON, K7L 3N6, Canada zouy@post.queensu.ca Abstract propose a quality driven software migration framework that aims to identify and extract an object model

Zou, Ying

235

Electrochemical migration of Ag nanoink patterns controlled by atmospheric-pressure plasma  

Science Journals Connector (OSTI)

Highly contrasting surface energies were induced on polyimide (PI) substrates using atmospheric-pressure plasma (APP) to allow precise printing of Ag electrodes that showed mitigated electrochemical migration (ECM). The substrate surface was made uniformly ... Keywords: Atmospheric-pressure plasma, Dendritic growth, Electrochemical migration (ECM), Inkjet printing, Silver nanoink

Kwang-Seok Kim; Young-Tae Kwon; Yong-Ho Choa; Seung-Boo Jung

2013-06-01T23:59:59.000Z

236

SUBMITTED TO IEEE TRANSACTIONS ON COMPUTERS 1 iAware: Making Live Migration of Virtual  

E-Print Network (OSTI)

on harnessing live migration of VMs to achieve load balancing and power saving among different servers and destination servers during and after such VM migration. To avoid potential violations of service address is bli@cse.ust.hk. · Baochun Li is with the Department of Electrical and Computer Engineering

Li, Baochun

237

ADAM: A Decentralized Parallel Computer Architecture Featuring Fast Thread and Data Migration and a Uniform Hardware  

E-Print Network (OSTI)

ADAM: A Decentralized Parallel Computer Architecture Featuring Fast Thread and Data Migration Parallel Computer Architecture Featuring Fast Thread and Data Migration and a Uniform Hardware Abstraction The furious pace of Moore's Law is driving computer architecture into a realm where the the speed of light

Gabrieli, John

238

Study of an API migration for two XML APIs Thiago Tonelli Bartolomei1, Krzysztof Czarnecki1,  

E-Print Network (OSTI)

Study of an API migration for two XML APIs Thiago Tonelli Bartolomei1, Krzysztof Czarnecki1, Ralf L Abstract. API migration refers to adapting an application such that its depen- dence on a given API (the source API) is eliminated in favor of depending on an alternative API (the target API) with the source

Czarnecki, Krzysztof

239

Connectivity, clusters, and transport: use of percolation concepts and atomistic simulation to track intracellular ion migration  

Science Journals Connector (OSTI)

...track intracellular ion migration Ann Marie...Department of Mechanical Engineering and Department of...Department of Biomedical Engineering, University of...Article Review | 0 Ions 0 Metals 0 Molecular...track intracellular ion migration By A n...Department of Mechanical Engineering and Department of...

2004-01-01T23:59:59.000Z

240

MODEL OF THE .MIGRATION OF ALBACORE IN THE NORTH PACIFIC OCEAN  

E-Print Network (OSTI)

MODEL OF THE .MIGRATION OF ALBACORE IN THE NORTH PACIFIC OCEAN .By TAMIO OTSU and RICHARD N. UCHIDA of the migration of albacore in the North Pacific Ocean has been developed. This model is consistent with the hypothesis that there is a single population of albacore in the North Pacific Ocean. . The model depicts

Note: This page contains sample records for the topic "migration pathway timing" 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

Synchronous Oil Migration and Cementation in Sandstone Reservoirs Demonstrated by Quantitative Description of Diagenesis [and Discussion  

Science Journals Connector (OSTI)

...July 1993 research-article Synchronous Oil Migration and Cementation in Sandstone Reservoirs...of sandstone burial diagenesis in certain oil reservoirs, in which petroleum migration...at, and in a series of zones below, the oil-water contact which descends as oil fills...

1993-01-01T23:59:59.000Z

242

Anaerobic Migrating Blanket Reactor Treatment of Low-Strength Wastewater at  

E-Print Network (OSTI)

Anaerobic Migrating Blanket Reactor Treatment of Low-Strength Wastewater at Low Temperatures Largus anaerobic migrating blanket reactor (AMBR) was studied for the treatment of low- strength soluble wastewater milk substrate as a synthetic wastewater at low temperatures (15 and 20 °C). The concentration

Angenent, Lars T.

243

Transatlantic migration and deep mid-ocean diving by basking shark  

Science Journals Connector (OSTI)

...August 2008 research-article Marine biology 1001 14 60 Transatlantic migration and deep mid-ocean diving by basking shark Mauvis...84, 795-799. doi:10.1017/S0025315404009968h . Transatlantic migration and deep mid-ocean diving by basking shark...

2008-01-01T23:59:59.000Z

244

RIS-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT  

E-Print Network (OSTI)

;#12;- 5 - 1. INTRODUCTION The storage of heat producing radioactive waste in rock salt, will produce of the brine migration under influence of the decreasing heat production in the waste. A general expressionRISĂ?-M-2260 HEAT GRADIENT INDUCED MIGRATION OF BRINE INCLUSIONS IN ROCK SALT Mathematical treatment

245

Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1  

E-Print Network (OSTI)

- 1 - Testing Oil Saturation Distribution in Migration Paths Using MRI1 Jianzhao Yan 1 , Xiaorong media, and to measure oil and water saturation. Although this technique has great advantages compared14. Using15 MRI, the oil secondary migration paths are scanned to measure the saturation distribution during

Paris-Sud XI, Université de

246

Acoustic and Thermal Characterization of Oil Migration, Gas Hydrates Formation and Silica Diagenesis  

E-Print Network (OSTI)

Acoustic and Thermal Characterization of Oil Migration, Gas Hydrates Formation and Silica Rights Reserved #12;ABSTRACT Acoustic and Thermal Characterization of Oil Migration, Gas Hydrates-A to Opal-CT, the formation of gas hydrates, fluid substitution in hydrocarbon reservoirs, and fluid

Guerin, Gilles

247

PBRP Research Highlight Use of Lake Maurepas Wetlands by Migrating Birds  

E-Print Network (OSTI)

PBRP Research Highlight Use of Lake Maurepas Wetlands by Migrating Birds P.C. Stouffer and Jason A's largest migratory routes for Neotropical migratory birds, many of which use the Maurepas wetlands during spring and fall migrations. Large portions of swamp in the Maurepas wetlands have converted to marsh

Stouffer, Phil

248

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers  

E-Print Network (OSTI)

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers Edited by Joan SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS PART 4: POLICY AND SUSTAINABLE TRANSPORTATION Part 4: Policy and Sustainable Transportation We have explored and compared advanced vehicle and fuel pathways and imagined

California at Davis, University of

249

Emissions pathways, climate change, and impacts on California  

E-Print Network (OSTI)

Emissions pathways, climate change, and impacts on California Katharine Hayhoea,b , Daniel Cayanc emission pathways we choose. Here we explore the implications of the highest and lowest Intergovern- mental Panel on Climate Change emissions pathways for climate change and associated impacts in California

Kammen, Daniel M.

250

Petri nets for modelling metabolic pathways: a survey  

Science Journals Connector (OSTI)

In the last 15 years, several research efforts have been directed towards the representation and the analysis of metabolic pathways by using Petri nets. The goal of this paper is twofold. First, we discuss how the knowledge about metabolic pathways can ... Keywords: Metabolic pathways, Petri nets, Qualitative and quantitative analysis, Tools

Paolo Baldan; Nicoletta Cocco; Andrea Marin; Marta Simeoni

2010-12-01T23:59:59.000Z

251

DYNAMIC INVARIANTS IN PROTEIN FOLDING PATHWAYS REVEALED BY TENSOR ANALYSIS  

E-Print Network (OSTI)

DYNAMIC INVARIANTS IN PROTEIN FOLDING PATHWAYS REVEALED BY TENSOR ANALYSIS Arvind Ramanathan Lane a spatio-temporal analysis of protein folding pathways. We applied our method to folding simulations of how a protein folds into its functionally relevant conformations. Protein folding pathways span over

Langmead, Christopher James

252

Modeling Protein Folding Pathways Christopher Bystroff, Yu Shao  

E-Print Network (OSTI)

Modeling Protein Folding Pathways Christopher Bystroff, Yu Shao Dept of Biology Rensselaer Polytechnic Institute, Troy, NY. e-mail:{bystrc, shaoy}@rpi.edu Summary Proteins fold through a series of intermediate states called a pathway. Protein folding pathways have been modeled using either simulations

Bystroff, Chris

253

The role of drebrin in glioma migration and invasion  

SciTech Connect

Glioblastoma (GBM) is the most common primary brain tumor in adults. Despite current advances in therapy consisting of surgery followed by chemotherapy and radiation, the overall survival rate still remains poor. Therapeutic failures are partly attributable to the highly infiltrative nature of tumor adjacent to normal brain parenchyma. Recently, evidence is mounting to suggest that actin cytoskeleton dynamics are critical components of the cell invasion process. Drebrin is an actin-binding protein involved in the regulation of actin filament organization, and plays a significant role in cell motility; however, the role of drebrin in glioma cell invasiveness has not yet been fully elucidated. Therefore, this study was aimed to clarify the role of drebrin in glioma cell morphology and cell motility. Here we show that drebrin is expressed in glioma cell lines and in operative specimens of GBM. We demonstrate that stable overexpression of drebrin in U87 cells leads to alterations in cell morphology, and induces increased invasiveness in vitro while knockdown of drebrin in U87 cells by small interfering RNA (siRNA) decreases invasion and migration. In addition, we show that depletion of drebrin by siRNA alters glioma cell morphology in A172 GBM cell line. Our results suggest that drebrin contributes to the maintenance of cell shape, and may play an important role in glioma cell motility. - Highlights: ? Drebrin is an actin-binding protein aberrantly expressed in several cancers. ? Role of drebrin in glioma cell morphology and motility is previously unknown. ? We demonstrate that drebrin is expressed in 40% of glioblastoma specimens. ? Drebrin plays a significant role in modulating glioma cell migration and invasion.

Terakawa, Yuzo [The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, Ontario (Canada); Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka (Japan); Agnihotri, Sameer; Golbourn, Brian; Nadi, Mustafa; Sabha, Nesrin; Smith, Christian A. [The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, Ontario (Canada); Croul, Sidney E. [The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, Ontario (Canada); Division of Neuropathology, University Health Network, Department of Laboratory Medicine and Pathobiology (Canada); Rutka, James T., E-mail: james.rutka@sickkids.ca [The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, Ontario (Canada); Department of Surgery, University of Toronto, Toronto, Ontario (Canada)

2013-02-15T23:59:59.000Z

254

Rural migration in Nevada: Lincoln County. Phase 1, 1992--1993  

SciTech Connect

The principal objective of this project was to develop insight into the scope of migration of working age Nevadans out of their county of birth; including the collection of data on their skill levels, desire to out or in-migrate, interactions between families of migratory persons, and the impact that the proposed high-level nuclear waste repository at Yucca mountain might have on their individual, and collective, decisions to migrate and return. The initial phase of this project reported here was conducted in 1992 and 1993 in Lincoln County, Nevada, one of the counties designated as ``affected`` by the proposed repository program. The findings suggest that a serious out-migration problem exists in Lincoln County, and that the Yucca mountain project will likely affect decisions relating to migration patterns in the future.

Soden, D.L.; Carns, D.E.; Mosser, D.; Conary, J.S.; Ansell, J.P.

1993-12-31T23:59:59.000Z

255

The water fountain vs. the fire hose: an examination and comparison of two large enterprise mail service migrations  

Science Journals Connector (OSTI)

Mail administrators will inevitably face a situation where they will need to migrate their users from one server to another, not infrequently migrating to a different service altogether. In 2008, two divisions of Argonne National Laboratory found themselves ...

Craig Stacey; Max Trefonides; Tim Kendall; Brian Finley

2009-11-01T23:59:59.000Z

256

During their offshore migration, sea turtle hatchlings swim away from their natal beaches and into the open ocean. Early  

E-Print Network (OSTI)

During their offshore migration, sea turtle hatchlings swim away from their natal beaches © The Company of Biologists Limited 1995 At the beginning of their offshore migration, hatchling sea turtles

Lohmann, Kenneth J.

257

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 2002-2003 Annual Report.  

SciTech Connect

Prior to 1992, decisions on dam operations and use of stored water relied on recoveries of branded hatchery fish, index counts at traps and dams, and flow patterns at the dams. The advent of PIT-tag technology provided the opportunity to precisely track the smolt migrations of many wild stocks as they pass through the hydroelectric complex and other monitoring sites on their way to the ocean. With the availability of the PIT tag, a more complete approach to these decisions was undertaken starting in 1992 with the addition of PIT-tag detections of several wild spring and summer chinook salmon stocks at Lower Granite Dam. Using data from these detections, we initiated development of a database on wild fish, addressing several goals of the Columbia River Basin Fish and Wildlife Program of the Pacific Northwest Electric Power Planning Council and Conservation Act (NPPC 1980). Section 304(d) of the program states, ''The monitoring program will provide information on the migrational characteristics of the various stocks of salmon and steelhead within the Columbia Basin.'' Further, Section 201(b) urges conservation of genetic diversity, which will be possible only if wild stocks are preserved. Section 5.9A.1 of the 1994 Fish and Wildlife Program states that field monitoring of smolt movement will be used to determine the best timing for water storage releases and Section 5.8A.8 states that continued research is needed on survival of juvenile wild fish before they reach the first dam with special attention to water quantity, quality, and several other factors. The goals of this ongoing study are as follows (1) Characterize the migration timing and estimate parr-to-smolt survival of different stocks of wild Snake River spring/summer chinook salmon smolts at Lower Granite Dam. (2) Determine whether consistent migration patterns are apparent. (3) Determine what environmental factors influence these patterns. (4) Characterize the migrational behavior and estimate survival of different wild juvenile fish stocks as they emigrate from their natal rearing areas. This study provides critical information for recovery planning, and ultimately recovery for these ESA-listed wild fish stocks. This report provides information on PIT tagging of wild chinook salmon parr in 2002 and the subsequent monitoring of these fish. Fish were monitored as they migrated through two in-stream PIT-tag monitoring systems in lower Valley Creek and at juvenile migrant traps in 2002 and 2003 as well as through interrogation systems at Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Dams during 2003. Fish were also monitored by the PIT-tag trawl in the mouth of the Columbia River in 2003. In 2002-2003, we also continued to collect environmental data for the Baseline Environmental Monitoring Program, which was developed from 1993 to 1997. The project was designed to collect data for use in conjunction with data on parr and smolt movements to discern patterns or characteristic relationships between these movements and environmental factors. Water quality data collected consist of water temperature, dissolved oxygen, specific conductance, turbidity, water depth, and pH measured at five monitoring stations in the Salmon River Basin, Idaho.

Achord, Stephen; McNatt, Regan A.; Hockersmith, Eric E. (National Marine Fisheries Service, Northwest Fisheries Science Center, Fish Ecology Division, Seattle, WA)

2004-04-01T23:59:59.000Z

258

Single-enzyme kinetics with branched pathways: exact theory and series expansion  

E-Print Network (OSTI)

The progress of the successive rounds of catalytic conversion of substrates into product(s) by a single enzyme is characterized by the distribution of turnover times. Establishing the most general form of dependence of this distribution on the substrate concentration [S] is one of the fundamental challenges in single molecule enzymology. The distribution of the times of dwell of a molecular motor at the successive positions on its track is an analogous quantity. We derive approximate series expansions for the [ATP]-dependence of the first two moments of the dwell time distributions of motors that catalyze hydrolysis of ATP to draw input energy. Comparison between our results for motors with branched pathways and the corresponding expressions reported earlier for linear enzymatic pathways provides deep insight into the effects of the branches. Such insight is likely to help in discovering the most general form of [S]-dependence of these fundamental distributions.

Ashok Garai; Debashish Chowdhury

2014-12-10T23:59:59.000Z

259

Collision-Induced Migration of Adsorbates on Solid Surfaces: An Experimental Approach I. M. Danziger and M. Asscher*  

E-Print Network (OSTI)

Collision-Induced Migration of Adsorbates on Solid Surfaces: An Experimental Approach I. M or molecules at the tail of the Boltzmann distribution enhance surface migration of adsorbates upon collision distance per collision is understood in terms of a cascade migration mechanism, where adsorbed CO molecules

Asscher, Micha

260

Funding Opportunity Announcement: Solar Market Pathways  

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

The Solar Market Pathways funding opportunity announcement (FOA) seeks to support regional, state, tribal, and locally-driven efforts to develop multi-year solar deployment plans that will help provide business certainty and establish a clear path for the next five to ten years of solar deployment. Specifically, this FOA is intended to enable replicable multi-year strategies that spur significant solar deployment, drive down solar soft costs, support local economic development efforts, and address the potential challenges arising from increased solar penetration on the electrical grid.

Note: This page contains sample records for the topic "migration pathway timing" 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

Radionuclide Migration through Sediment and Concrete: 16 Years of Investigations  

SciTech Connect

The Waste Management Project provides safe, compliant, and cost-effective waste management services for the Hanford Site and the U.S. Department of Energy (DOE) complex. Part of these services includes safe disposal of low-level waste and mixed low-level waste at the Hanford Low-Level Waste Burial Grounds in accordance with the requirements of DOE Order 435.1, Radioactive Waste Management. To partially satisfy these requirements, performance assessment analyses were completed and approved. DOE Order 435.1 also requires continuing data collection to increase confidence in the critical assumptions used in these analyses to characterize the operational features of the disposal facility that are relied on to satisfy the performance objectives identified in the order. Cement-based solidification and stabilization is considered for hazardous waste disposal because it is easily done and cost-efficient. One critical assumption is that concrete will be used as a waste form or container material at the Hanford Site to control and minimize the release of radionuclide constituents in waste into the surrounding environment. Concrete encasement would contain and isolate the waste packages from the hydrologic environment and act as an intrusion barrier. Any failure of concrete encasement may result in water intrusion and consequent mobilization of radionuclides from the waste packages. The radionuclides iodine-129, selenium-75, technetium-99, and uranium-238 have been identified as long-term dose contributors (Mann et al. 2001; Wood et al. 1995). Because of their anionic nature in aqueous solutions, these constituents of potential concern may be released from the encased concrete by mass flow and/or diffusion and migrate into the surrounding subsurface environment (Serne et al. 1989; 1992; 1993a, b; 1995). Therefore, it is necessary to assess the performance of the concrete encasement structure and the ability of the surrounding soil to retard radionuclide migration. Each of the test methods performed throughout the lifetime of the project has focused on different aspects of the concrete waste form weathering process. Diffusion of different analytes [technetium-99 (Tc-99), iodine-125 (I-125), stable iodine (I), uranium (U), and rhenium (Re)] has been quantified from experiments under both saturated and unsaturated conditions. The water-saturated conditions provide a conservative estimate of the concrete’s performance in situ, and the unsaturated conditions provide a more accurate estimate of the diffusion of contaminants from the concrete.

Golovich, Elizabeth C.; Mattigod, Shas V.; Snyder, Michelle MV; Powers, Laura; Whyatt, Greg A.; Wellman, Dawn M.

2014-11-06T23:59:59.000Z

262

miR-196a targets netrin 4 and regulates cell proliferation and migration of cervical cancer cells  

SciTech Connect

Highlights: •miR-196a was overexpressed in cervical cancer tissue compared to normal tissue. •miR-196a expression elevated proliferation and migration of cervical cancer cells. •miR-196a inhibited NTN4 expression by binding 3?-UTR region of NTN4 mRNA. •NTN4 inversely correlated with miR-196a expression in cervical tissue and cell line. •NTN4 expression was low in cervical cancer tissue compared to normal tissue. -- Abstract: Recent research has uncovered tumor-suppressive and oncogenic potential of miR-196a in various tumors. However, the expression and mechanism of its function in cervical cancer remains unclear. In this study, we assess relative expression of miR-196a in cervical premalignant lesions, cervical cancer tissues, and four cancer cell lines using quantitative real-time PCR. CaSki and HeLa cells were treated with miR-196a inhibitors, mimics, or pCDNA/miR-196a to investigate the role of miR-196a in cancer cell proliferation and migration. We demonstrated that miR-196a was overexpressed in cervical intraepithelial neoplasia 2–3 and cervical cancer tissue. Moreover, its expression contributes to the proliferation and migration of cervical cancer cells, whereas inhibiting its expression led to a reduction in proliferation and migration. Five candidate targets of miR-196a chosen by computational prediction and Cervical Cancer Gene Database search were measured for their mRNA in both miR-196a-overexpressing and -depleted cancer cells. Only netrin 4 (NTN4) expression displayed an inverse association with miR-196a. Fluorescent reporter assays revealed that miR-196a inhibited NTN4 expression by targeting one binding site in the 3?-untranslated region (3?-UTR) of NTN4 mRNA. Furthermore, qPCR and Western blot assays verified NTN4 expression was downregulated in cervical cancer tissues compared to normal controls, and in vivo mRNA level of NTN4 inversely correlated with miR-196a expression. In summary, our findings provide new insights about the functional role of miR-196a in cervical carcinogenesis and suggested a potential use of miR-196a for clinical diagnosis and as a therapeutic target.

Zhang, Jie [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China)] [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China); Zheng, Fangxia [Department of Radiotherapy, Liaocheng People’s Hospital, Liaocheng 252000 (China)] [Department of Radiotherapy, Liaocheng People’s Hospital, Liaocheng 252000 (China); Yu, Gang [Department for Disease Control, Tumor Hospital of Liaocheng, Liaocheng 252000 (China)] [Department for Disease Control, Tumor Hospital of Liaocheng, Liaocheng 252000 (China); Yin, Yanhua, E-mail: yinyanhuablk@163.com [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China)] [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China); Lu, Qingyang [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China)] [Department of Pathology, Liaocheng People’s Hospital, Liaocheng 252000 (China)

2013-11-01T23:59:59.000Z

263

Development of an in vitro model for migration inhibitory factor utilizing a component of cobra venom  

E-Print Network (OSTI)

of Committee~ Head of Depar me j'7 c Member Membe May 1976 ABSTRACT Development of an In Vitro Model for Migration Inhibitory Factor Utilizing a Component of Cobra Venon. May (1976) Lee James Carmack, B. S. , Texas ASM University; Chairman of Advisory... of fractions eluted from the ion exchange column 2 Effects of whole cobra venom (CV), dialyzed cobra venom (OCV), Arvin, and Venacil on migration of normal mouse peritoneal exudate cells in cell culture 3 Effects on migration of normal mouse peritoneal...

Carmack, Lee James

1976-01-01T23:59:59.000Z

264

Diosgenin induces apoptosis in IGF-1-stimulated human thyrocytes through two caspase-dependent pathways  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Diosgenin induces apoptosis in IGF-1-treated thyrocytes through two caspase pathways. Black-Right-Pointing-Pointer Diosgenin inhibits FLIP and activates caspase-8 in FAS related-pathway. Black-Right-Pointing-Pointer Diosgenin increases ROS, regulates the ratio of Bax/Bcl-2 in mitochondrial pathway. -- Abstract: Insulin-like growth factor-1 (IGF-1) is a growth factor of the thyroid that has been shown in our previous study to possess proliferative and antiapoptotic effects in FRTL-5 cell lines through the upregulation of cyclin D and Fas-associated death domain-like interleukin-1-converting enzyme (FLICE)-inhibitory protein (FLIP). Diosgenin, a natural steroid sapogenin from plants, has been shown to induce apoptosis in many cell lines, with the exception of thyroid cells. In this report, we investigated the apoptotic effect and mechanism of diosgenin in IGF-1-stimulated primary human thyrocytes. Primary human thyrocytes were preincubated with or without IGF-1 for 24 h and subsequently exposed to varying concentrations of diosgenin for different times. We found that diosgenin induced apoptosis in human thyrocytes pretreated with IGF-1 in a dose-dependent manner through the activation of caspase cascades. Moreover, diosgenin inhibited FLIP and activated caspase-8 in the FAS-related apoptotic pathway. Diosgenin increased the production of ROS, regulated the balance of Bax and Bcl-2 and cleaved caspase-9 in the mitochondrial apoptotic pathway. These results indicate that diosgenin induces apoptosis in IGF-1-stimulated primary human thyrocytes through two caspase-dependent pathways.

Mu, Shumin [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China) [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Hospital Affiliated to Shandong Traditional Chinese Medicine University, Jinan 250011 (China); Institute of Endocrinology, Shandong Academy of Clinical Medicine, Jinan 250021 (China); Tian, Xingsong; Ruan, Yongwei [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China)] [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Liu, Yuantao [The Second Hospital of Shandong University, Jinan 250033 (China)] [The Second Hospital of Shandong University, Jinan 250033 (China); Bian, Dezhi [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China) [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Jining Medical College, Jining 272013 (China); Ma, Chunyan [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China)] [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Yu, Chunxiao [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China) [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Institute of Endocrinology, Shandong Academy of Clinical Medicine, Jinan 250021 (China); Feng, Mei [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China)] [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Wang, Furong [Shandong University of Traditional Chinese Medicine, Jinan 250011 (China)] [Shandong University of Traditional Chinese Medicine, Jinan 250011 (China); Gao, Ling [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China) [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Institute of Endocrinology, Shandong Academy of Clinical Medicine, Jinan 250021 (China); Zhao, Jia-jun, E-mail: jjzhao@medmail.com.cn [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China) [Provincial Hospital Affiliated to Shandong University, Jinan 250021 (China); Institute of Endocrinology, Shandong Academy of Clinical Medicine, Jinan 250021 (China)

2012-02-10T23:59:59.000Z

265

Recombination-enhanced migration of interstitial aluminum in silicon  

Science Journals Connector (OSTI)

We report the first observation of recombination-enhanced recovery of a defect in silicon which is otherwise normally stable at room temperature. This defect, produced by 1.5-MeV electron irradiation of aluminum-doped material at room temperature, is identified as isolated interstitial aluminum through correlated deep-level transient-capacitance spectroscopy and EPR studies. The recovery rate constant in the absence of minority-carrier injection is 3(109) exp(- 1.2±0.1 eV/kT) sec-1. Under saturated injection conditions, it is 70 exp(- 0.27±0.03 eV/kT) sec-1. This represents an enhancement of the recovery rate by a factor of ? 108 at room temperature. We conclude that this enhancement results from an efficient conversion of the electronic energy available upon carrier capture to local vibrational energy of the defect which assists it over the migration barrier. The second donor level of the defect (Ali+Ali++) is determined to be at EV+0.17 eV. We conclude, however, that the enhancement results from carrier capture and recombination at the first donor level (Ali0Ali+) the position of which has not yet been determined. The implications of these results to the properties of the self-interstitial in silicon are discussed.

J. R. Troxell; A. P. Chatterjee; G. D. Watkins; L. C. Kimerling

1979-05-15T23:59:59.000Z

266

A groundwater flow and transport model of long-term radionuclide migration in central Frenchman flat, Nevada test site  

SciTech Connect

A set of groundwater flow and transport models were created for the Central Testing Area of Frenchman Flat at the former Nevada Test Site to investigate the long-term consequences of a radionuclide migration experiment that was done between 1975 and 1990. In this experiment, radionuclide migration was induced from a small nuclear test conducted below the water table by pumping a well 91 m away. After radionuclides arrived at the pumping well, the contaminated effluent was discharged to an unlined ditch leading to a playa where it was expected to evaporate. However, recent data from a well near the ditch and results from detailed models of the experiment by LLNL personnel have convincingly demonstrated that radionuclides from the ditch eventually reached the water table some 220 m below land surface. The models presented in this paper combine aspects of these detailed models with concepts of basin-scale flow to estimate the likely extent of contamination resulting from this experiment over the next 1,000 years. The models demonstrate that because regulatory limits for radionuclide concentrations are exceeded only by tritium and the half-life of tritium is relatively short (12.3 years), the maximum extent of contaminated groundwater has or will soon be reached, after which time the contaminated plume will begin to shrink because of radioactive decay. The models also show that past and future groundwater pumping from water supply wells within Frenchman Flat basin will have negligible effects on the extent of the plume.

Kwicklis, Edward Michael [Los Alamos National Laboratory; Becker, Naomi M [Los Alamos National Laboratory; Ruskauff, Gregory [NAVARRO-INTERA, LLC.; De Novio, Nicole [GOLDER AND ASSOC.; Wilborn, Bill [US DOE NNSA NSO

2010-11-10T23:59:59.000Z

267

Mapping Subsurface CO2 Migration | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Mapping Subsurface CO2 Migration Mapping Subsurface CO2 Migration Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) News & Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: sc.bes@science.doe.gov More Information » January 2013 Mapping Subsurface CO2 Migration New computational technique creates high resolution maps of subsurface CO2 after geologic sequestration. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Sanjay Srinivasan, UT-Austin High resolution inverted seismic images of CO2 migration at the Cranfield,

268

An empirical model of subcritical bedform migration CHAN-YI MARTIN LIN and JEREMY G. VENDITTI  

E-Print Network (OSTI)

An empirical model of subcritical bedform migration CHAN-YI MARTIN LIN and JEREMY G. VENDITTI the full range of conditions under which subcritical bedforms develop. Here, the relation between bedform

Venditti, Jeremy G.

269

GPER Inhibition of Coronary Artery Smooth Muscle Cell Migration and Proliferation  

E-Print Network (OSTI)

Our research investigated a possible target for cardiovascular disease treatment via the G-protein coupled estrogen receptor (GPER). Estrogen mitigates vascular smooth muscle cell (VSMC) proliferation and migration, which plays an important role...

Szynkarski, Claudia Kay

2013-02-04T23:59:59.000Z

270

E-Print Network 3.0 - a549 cells migrate Sample Search Results  

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

Collection: Biology and Medicine 25 Retinoids and Their Receptors in Cancer XIAO-KUN ZHANG, PH.D. Summary: the mitochondria. Such a migration ofTR3 from the nucleus to...

271

Pressure solution and microfracturing in primary oil migration, upper cretaceous Austin Chalk, Texas Gulf Coast  

E-Print Network (OSTI)

The Upper Cretaceous Austin Chalk is a well known source rock and fractured reservoir. Production is mainly from fractures, and the mechanism by which oil migrates from the matrix into the fractures is not well understood. Microfracturing due...

Chanchani, Jitesh

2012-06-07T23:59:59.000Z

272

Chemical and physical processes of radionuclide migration at Yucca Mountain, Nevada  

Science Journals Connector (OSTI)

The understanding and prediction of radionuclide migration within the geosphere of a high-level radioactive waste repository requires knowledge of chemical and physical processes. In this paper, we present an ove...

E. S. Patera; D. E. Hobart; A. Meijer…

1990-09-01T23:59:59.000Z

273

DP: Dynamic Prepage in Postcopy Migration for Fixed-Size Data Load  

Science Journals Connector (OSTI)

Postcopy migration is a mature technology in virtualization. However the performance of postcopy is not stable. We find many memory intensive loads having a high proportion of independent fixed-size data (FSD) ca...

Shuang Wu; Ce Yang; Jianhai Chen; Qinming He; Bei Wang

2014-01-01T23:59:59.000Z

274

Silencing of VAMP3 inhibits cell migration and integrin-mediated adhesion  

SciTech Connect

Integrins are transmembrane receptors for cell adhesion to the extracellular matrix. In cell migration, integrins are endocytosed from the plasma membrane or the cell surface, transported in vesicles and exocytosed actively at the cell front. In the present study, we examined the roles of VAMP3, a SNARE protein that mediates exocytosis, in cell migration and integrin trafficking. Small interfering RNA (siRNA)-induced silencing of VAMP3 inhibited chemotactic cell migration by more than 60% without affecting cell proliferation. VAMP3 silencing reduced the levels of {beta}1 integrin at the cell surface but had no effect on total cellular {beta}1 integrin, indicating that VAMP3 is required for trafficking of {beta}1 integrin to the plasma membrane. Furthermore, VAMP3 silencing diminished cell adhesion to laminin but not to fibronectin or collagen. Taken together, these data suggest that VAMP3-dependent integrin trafficking is crucial in cell migration and cell adhesion to laminin.

Luftman, Kevin; Hasan, Nazarul; Day, Paul; Hardee, Deborah [Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, 319 Abraham Flexner Way, Room 515, Louisville, KY 40202 (United States); Hu Chuan [Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, 319 Abraham Flexner Way, Room 515, Louisville, KY 40202 (United States)], E-mail: chuan.hu@louisville.edu

2009-02-27T23:59:59.000Z

275

Migration of landfill gas and its control by grouting—a case history  

Science Journals Connector (OSTI)

...research-article Article Migration of landfill gas and its control by grouting-a...London. Parker, A. 1981. Landfill gas problems-case histories. Proceedings of Landfill Gas Symposium, UK AERE Harwell. Rees...

J. G. Raybould; D. J. Anderson

276

Laser-induced grating measurements of energy migration in Tm,Ho:YAG  

Science Journals Connector (OSTI)

We report what is to our knowledge the first direct measurement of spatial energy migration among the Tm3+ ions in a Tm,Ho:YAG crystal at room temperature. Four-wave mixing...

French, Valentina A; Powell, Richard C

1991-01-01T23:59:59.000Z

277

E-Print Network 3.0 - animal migration disappearing Sample Search...  

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

search results for: animal migration disappearing Page: << < 1 2 3 4 5 > >> 1 Marine Ecology Progress Series 233:117-130 Changes in distribution and decrease in numbers during...

278

Quantitative approaches to understanding signaling regulation of 3D cell migration  

E-Print Network (OSTI)

For many cancers, dissemination of tumor cells to form metastases is not only a hallmark of the disease but an essential step to mortality. Migration and dissemination are complex, multistep processes, and study of their ...

Meyer, Aaron Samuel

2014-01-01T23:59:59.000Z

279

Formation, migration, and clustering of delocalized vacancies and interstitials at a solid-state semicoherent interface  

E-Print Network (OSTI)

Atomistic simulations are used to study the formation, migration, and clustering of delocalized vacancies and interstitials at a model fcc-bcc semicoherent interface formed by adjacent layers of Cu and Nb. These defects ...

Kolluri, Kedarnath

280

Atomistic Study of Intrinsic Defect Migration in 3C-SiC. | EMSL  

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

by a kick-inkick-out process via a split interstitial configuration. Both C and Si vacancies jump to one of their equivalent sites through a direct migration mechanism. The...

Note: This page contains sample records for the topic "migration pathway timing" 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

Identification of Low Emissions Agricultural Pathways and Priorities for  

Open Energy Info (EERE)

Identification of Low Emissions Agricultural Pathways and Priorities for Identification of Low Emissions Agricultural Pathways and Priorities for Mitigation in Agricultural Landscapes using Integrated Assessment Modeling and Scenarios Jump to: navigation, search Name Identification of Low Emissions Agricultural Pathways and Priorities for Mitigation in Agricultural Landscapes using Integrated Assessment Modeling and Scenarios Agency/Company /Organization CGIAR's Climate Change, Agriculture and Food Security (CCAFS), Canadian International Development Agency (CIDA), the Danish International Development Agency (DANIDA), the European Union, International Fund for Agricultural Development (IFAD) Partner International Institute for Applied Systems Analysis (IIASA) Sector Land Focus Area Agriculture Topics Background analysis, Baseline projection, Low emission development planning, -LEDS, Pathways analysis, Policies/deployment programs

282

Pathways for Implementing REDD+: Experiences from Carbon Markets...  

Open Energy Info (EERE)

Carbon Markets and Communities Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Pathways for Implementing REDD+: Experiences from Carbon Markets and Communities Agency...

283

Systems biology of endothelial mechano-activated pathways  

E-Print Network (OSTI)

Multiple signaling pathways are employed by endothelial cells to differentially respond to distinct hemodynamic environments and acquire functional phenotypes, including regulation of inflammation, angiogenesis, blood ...

Koo, Andrew Jia-An

2013-01-01T23:59:59.000Z

284

US DRIVE Fuel Pathway Integration Technical Team Roadmap | Department...  

Energy Savers (EERE)

(the Partnership) in the identification and evaluation of implementation scenarios for fuel cell technology pathways, including hydrogen and fuel cell electric vehicles in the...

285

Migration barrier covers for radioactive and mixed waste landfills  

SciTech Connect

Migration barrier cover technology will likely serve as the remediation alternative of choice for most of DOE's radioactive and mixed waste landfills simply because human and ecological risks can be effectively managed without the use of more expensive alternatives. However, very little testing and evaluation has been done, either before or after installation, to monitor how effective they are in isolating waste or to develop data that can be used to evaluate model predictions of long term performance. Los Alamos National Laboratory has investigated the performance of a variety of landfill capping alternatives since 1981 using large field lysimeters to monitor the fate of precipitation falling on the cap surface. The objective of these studies is to provide the risk manager with a variety of field tested capping designs, of various complexities and costs, so that design alternatives can be matched to the need for hydrologic control at the site. Four different landfill cap designs, representing different complexities and costs, were constructed at Hill Air Force Base (AFB) in October and November, 1989. The designs were constructed in large lysimeters and instrumented to provide estimates of all components of water balance including precipitation, runoff (and soil erosion), infiltration, leachate production, evapotranspiration, and capillary/hydraulic barrier flow. The designs consisted of a typical soil cover to serve as a baseline, a modified EPA RCRA cover, and two versions of a Los Alamos design that contained erosion control measures, an improved vegetation cover to enhance evapotranspiration, and a capillary barrier to divert downward flow of soil water. A comprehensive summary of the Hill AFB demonstration will be available in October 1993, when the project is scheduled to terminate.

Hakonson, T.E.; Manies, K.L.; Warren, R.W.; Bostick, K.V.; Trujillo, G. (Los Alamos National Lab., NM (United States)); Kent, J.S. (Air Force Academy, CO (United States). Dept. of Biology); Lane, L.J. (Department of Agriculture, Tucson, AZ (United States))

1993-01-01T23:59:59.000Z

286

Migration barrier covers for radioactive and mixed waste landfills  

SciTech Connect

Migration barrier cover technology will likely serve as the remediation alternative of choice for most of DOE`s radioactive and mixed waste landfills simply because human and ecological risks can be effectively managed without the use of more expensive alternatives. However, very little testing and evaluation has been done, either before or after installation, to monitor how effective they are in isolating waste or to develop data that can be used to evaluate model predictions of long term performance. Los Alamos National Laboratory has investigated the performance of a variety of landfill capping alternatives since 1981 using large field lysimeters to monitor the fate of precipitation falling on the cap surface. The objective of these studies is to provide the risk manager with a variety of field tested capping designs, of various complexities and costs, so that design alternatives can be matched to the need for hydrologic control at the site. Four different landfill cap designs, representing different complexities and costs, were constructed at Hill Air Force Base (AFB) in October and November, 1989. The designs were constructed in large lysimeters and instrumented to provide estimates of all components of water balance including precipitation, runoff (and soil erosion), infiltration, leachate production, evapotranspiration, and capillary/hydraulic barrier flow. The designs consisted of a typical soil cover to serve as a baseline, a modified EPA RCRA cover, and two versions of a Los Alamos design that contained erosion control measures, an improved vegetation cover to enhance evapotranspiration, and a capillary barrier to divert downward flow of soil water. A comprehensive summary of the Hill AFB demonstration will be available in October 1993, when the project is scheduled to terminate.

Hakonson, T.E.; Manies, K.L.; Warren, R.W.; Bostick, K.V.; Trujillo, G. [Los Alamos National Lab., NM (United States); Kent, J.S. [Air Force Academy, CO (United States). Dept. of Biology; Lane, L.J. [Department of Agriculture, Tucson, AZ (United States)

1993-03-01T23:59:59.000Z

287

An application of Crosswell Tomography using a hydrophone receiver array and airgun source to monitor steam migration in an unconsolidated, heavy-oil sandstone, West Coalinga Field, California  

SciTech Connect

This crosswell tomography field trial demonstrates the viability and cost- reducing benefits of a hydrophone receiver array and airgun source for monitoring steam (heat) migration within an unconsolidated, heavy-oil sandstone. This project represents one of the first applications of hydrophone receivers in such an environment. Data quality from the hydrophone array proved more than adequate for P-wave tomography while costs were reduced dramatically from estimates using a clamped geophone array. Additionally, the resolution provided by the capture of travel-time data from interwell areas offered a distinct advantage over conventional monitoring techniques limited to observation wells. Two crosswell surveys were conducted in the vicinity of a new, infill steam injector. The purpose was to monitor steam migration within an 80-foot thick, sandstone interval by detecting the heat-induced velocity decrease between the first survey, conducted just before steam injection, and the second survey conducted approximately three months later. Difference plots of the two surveys clearly define regions of significant temperature change and contact temperature logs corroborate the zone of peak change. The crosswell tomography data and the inferred steam migration characteristics immediately altered an operational strategy for the drive and were later a factor in the abandonment of continuous steam injection.

Blevens, D.M. (Chevron USA Production Co., Bakersfield, CA (United States)); Fairborn, J.W. (Wellseismic Computing Services, Balboa, CA (United States))

1996-01-01T23:59:59.000Z

288

An application of Crosswell Tomography using a hydrophone receiver array and airgun source to monitor steam migration in an unconsolidated, heavy-oil sandstone, West Coalinga Field, California  

SciTech Connect

This crosswell tomography field trial demonstrates the viability and cost- reducing benefits of a hydrophone receiver array and airgun source for monitoring steam (heat) migration within an unconsolidated, heavy-oil sandstone. This project represents one of the first applications of hydrophone receivers in such an environment. Data quality from the hydrophone array proved more than adequate for P-wave tomography while costs were reduced dramatically from estimates using a clamped geophone array. Additionally, the resolution provided by the capture of travel-time data from interwell areas offered a distinct advantage over conventional monitoring techniques limited to observation wells. Two crosswell surveys were conducted in the vicinity of a new, infill steam injector. The purpose was to monitor steam migration within an 80-foot thick, sandstone interval by detecting the heat-induced velocity decrease between the first survey, conducted just before steam injection, and the second survey conducted approximately three months later. Difference plots of the two surveys clearly define regions of significant temperature change and contact temperature logs corroborate the zone of peak change. The crosswell tomography data and the inferred steam migration characteristics immediately altered an operational strategy for the drive and were later a factor in the abandonment of continuous steam injection.

Blevens, D.M. [Chevron USA Production Co., Bakersfield, CA (United States); Fairborn, J.W. [Wellseismic Computing Services, Balboa, CA (United States)

1996-12-31T23:59:59.000Z

289

A Sea Floor Gravity Survey of the Sleipner Field to Monitor CO2 Migration  

SciTech Connect

Carbon dioxide gas (CO{sub 2}) is a byproduct of many wells that produce natural gas. Frequently the CO{sub 2} separated from the valuable fossil fuel gas is released into the atmosphere. This adds to the growing problem of the climatic consequences of greenhouse gas contamination. In the Sleipner North Sea natural gas production facility, the separated CO{sub 2} is injected into an underground saline aquifer to be forever sequestered. Monitoring the fate of such sequestered material is important - and difficult. Local change in Earth's gravity field over the injected gas is one way to detect the CO{sub 2} and track its migration within the reservoir over time. The density of the injected gas is less than that of the brine that becomes displaced from the pore space of the formation, leading to slight but detectable decrease in gravity observed on the seafloor above the reservoir. Using equipment developed at Scripps Institution of Oceanography, we have been monitoring gravity over the Sleipner CO{sub 2} sequestration reservoir since 2002. We surveyed the field in 2009 in a project jointly funded by a consortium of European oil and gas companies and the US Department of Energy. The value of gravity at some 30 benchmarks on the seafloor, emplaced at the beginning of the monitoring project, was observed in a week-long survey with a remotely operated vehicle. Three gravity meters were deployed on the benchmarks multiple times in a campaign-style survey, and the measured gravity values compared to those collected in earlier surveys. A clear signature in the map of gravity differences is well correlated with repeated seismic surveys.

Mark Zumberge

2011-09-30T23:59:59.000Z

290

Short- and Long- Time Transport Structures in a Three Dimensional Time Dependent Flow  

E-Print Network (OSTI)

Lagrangian transport structures for three-dimensional and time-dependent fluid flows are of great interest in numerous applications, particularly for geophysical or oceanic flows. In such flows, chaotic transport and mixing can play important environmental and ecological roles, for examples in pollution spills or plankton migration. In such flows, where simulations or observations are typically available only over a short time, understanding the difference between short-time and long-time transport structures is critical. In this paper, we use a set of classical (i.e. Poincar\\'e section, Lyapunov exponent) and alternative (i.e. finite time Lyapunov exponent, Lagrangian coherent structures) tools from dynamical systems theory that analyze chaotic transport both qualitatively and quantitatively. With this set of tools we are able to reveal, identify and highlight differences between short- and long-time transport structures inside a flow composed of a primary horizontal contra-rotating vortex chain, small later...

Chabreyrie, Rodolphe

2014-01-01T23:59:59.000Z

291

Enabling time travel for the scholarly web  

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

Enabling time travel for the scholarly web Enabling time travel for the scholarly web Enabling time travel for the scholarly web An international team of information scientists has begun a study to investigate how web links in scientific and other academic articles fail to lead to the resources being referenced. July 16, 2013 Herbert Van de Sompel, a Los Alamos National Laboratory information scientist, describes the information pathway involved in preventing "reference rot" in scientific material linked to the web. Herbert Van de Sompel, a Los Alamos National Laboratory information scientist, describes the information pathway involved in preventing "reference rot" in scientific material linked to the web. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "Increasingly, scientific papers contain links to web pages containing,

292

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

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

This technology pathway case investigates the cultivation of algal biomass followed by further lipid extraction and upgrading to hydrocarbon biofuels. Technical barriers and key research needs have been assessed in order for the algal lipid extraction and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

293

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers  

E-Print Network (OSTI)

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers Edited by Joan://creativecommons.org/licenses/by-nc-nd/3.0/>. For information on commercial licensing, contact copyright@ucdavis.edu. #12;171 SUSTAINABLE that has been done so far comparing the sustainability of different fuel/vehicle pathways along these lines

California at Davis, University of

294

Bioenergy Production Pathways and Value-Chain Components  

E-Print Network (OSTI)

Bioenergy Production Pathways and Value-Chain Components Prepared for the U.S. Department of Energy on Life Cycle Analyses of Bioenergy Systems Prepared by Hawai`i Natural Energy Institute School of Ocean or reflect those of the United States Government or any agency thereof. #12;Bioenergy Production Pathways

295

Physics Pathway: A Digital Library Filled with Synthetic Interviews*  

E-Print Network (OSTI)

Physics Pathway: A Digital Library Filled with Synthetic Interviews* Michael G. Christel-412-268-7796 sms@cs.cmu.edu Dean Zollman Department of Physics Kansas State University Manhattan, KS 66506 1-785-532-1619 dzollman@phys.ksu.edu ABSTRACT Physics Pathway is a digital library available through an Adobe Flash portal

Christel, Mike

296

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers  

E-Print Network (OSTI)

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers Edited by Joan Ogden and Lorraine Anderson #12;Institute of Transportation Studies University of California, Davis One TRANSPORTATION ENERGY PATHWAYS PART 3 CHAPTER 10: OPTIMIZING THE TRANSPORTATION CLIMATE MITIGATION WEDGE Chapter

California at Davis, University of

297

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers  

E-Print Network (OSTI)

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers Edited by Joan Ogden and Lorraine Anderson #12;Institute of Transportation Studies University of California, Davis One TRANSPORTATION ENERGY PATHWAYS PART 3: SCENARIOS FOR A LOW-CARBON TRANSPORTATION FUTURE PART 3 Part 3: Scenarios

California at Davis, University of

298

Ex-Situ Catalytic Fast Pyrolysis Technology Pathway  

SciTech Connect

This technology pathway case investigates converting woody biomass using ex-situ catalytic fast pyrolysis followed by upgrading to gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Technical barriers and key research needs that should be pursued for this pathway to be competitive with petroleum-derived blendstocks have been identified.

Biddy, M.; Dutta, A.; Jones, S.; Meyer, A.

2013-03-01T23:59:59.000Z

299

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

SciTech Connect

This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

Davis, R.; Biddy, M.; Tan, E.; Tao, L.; Jones, S.

2013-03-01T23:59:59.000Z

300

In-Situ Catalytic Fast Pyrolysis Technology Pathway  

SciTech Connect

This technology pathway case investigates converting woody biomass using in-situ catalytic fast pyrolysis followed by upgrading to gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Technical barriers and key research needs that should be pursued for this pathway to be competitive with petroleum-derived blendstocks have been identified.

Biddy, M.; Dutta, A.; Jones, S.; Meyer, A.

2013-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Biological Conversion of Sugars to Hydrocarbons Technology Pathway  

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

This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

302

Pathways, Networks and Therapy: A Boolean Approach to Systems Biology  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 1. Cell cycle control, DNA mutation and cancer . . . . . . . 89 D. Growth factor mediated pathways: combinatorial network . . . 91 1. Input-output simulation of the BN . . . . . . . . . . . . . 93 2. Modeling faults and therapeutic... of pathways and therapeutic target point knowl- edge in systems biology. . . . . . . . . . . . . . . . . . . . . . . . . . . 108 36 Personalized medicine using systems biology. . . . . . . . . . . . . . . . 109 1 CHAPTER I INTRODUCTION Biology is a...

Layek, Ritwik

2012-07-16T23:59:59.000Z

303

SUSTAINABLE TRANSPORTATION ENERGY PATHWAYS A Research Summary for Decision Makers  

E-Print Network (OSTI)

of our alternative fuel / advanced vehicle pathways. Reducing greenhouse gas (GHG) emissions from ENERGY PATHWAYS CHAPTER 6: COMPARING GREENHOUSE GAS EMISSIONS PART 2 radiative forcing is computed. When. (Note that researchers generally distinguish emissions related to the life cycle of fuels and energy

California at Davis, University of

304

The Activation of MEK/ERK Signaling Pathway by Bone Morphogenetic Protein 4 to Increase Hepatocellular Carcinoma Cell Proliferation and Migration  

Science Journals Connector (OSTI)

...Research, Kaohsiung Medical University Hospital...housed under controlled lighting (14 hours of light...pathologists at Kaohsiung Medical University Hospital...University-Kaohsiung Medical University Joint Research Center. The costs of publication of this...

Chiang-Yen Chiu; Kung-Kai Kuo; Tzu-Lei Kuo; King-The Lee; and Kuang-Hung Cheng

2012-03-01T23:59:59.000Z

305

A 4D synchrotron X-ray tomography study of the formation of hydrocarbon migration pathways in heated organic-rich shale  

E-Print Network (OSTI)

. Institute for Energy Technology, Kjeller, Norway Abstract Recovery of oil from oil shales and the natural

Boyer, Edmond

306

Biofuel production by in vitro synthetic enzymatic pathway biotransformation  

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

49; 49; NO. OF PAGES 7 Please cite this article in press as: Zhang Y-H P., et al. Biofuel production by in vitro synthetic enzymatic pathway biotransformation, Curr Opin Biotechnol (2010), doi:10.1016/j.copbio.2010.05.005 Available online at www.sciencedirect.com Biofuel production by in vitro synthetic enzymatic pathway biotransformation Y-H Percival Zhang 1,2,3 , Jibin Sun 4 and Jian-Jiang Zhong 5 Cell-free synthetic pathway biotransformation (SyPaB) is the implementation of complicated biochemical reactions by in vitro assembling a number of enzymes or their complexes and coenzymes. Assembly of numerous enzymes without cellular membrane, gene regulation, or undesired pathway can circumvent some of the obstacles to modifying living microorganisms. Several synthetic pathways for the production of liquid biofuels - alcohols and hydrocarbon precursors (polyols)

307

Digestion time  

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

Digestion time Digestion time Name: Don Mancosh Location: N/A Country: N/A Date: N/A Question: I have always given the rule of thumb in class that material we eat is with us for about 24 hours before exiting the body. The question arises about the time value of liquids. Getting a big coke prior to a 3 hour drive generally means that there will be a stop along the way. Is there a generalization made about liquids in the body similar to the one for solid food? Replies: A physician would give a better answer, but I hazard this: the only liquids which people consume (deliberately) in significant quantities are water, ethyl alcohol and various oils. Water and alcohol are absorbed on a time scale of seconds to minutes through the mouth, stomach and digestive tract. The oils are huge molecules, so I'd guess like any other greasy food they get absorbed in the upper digestive tract. Some of them, perhaps the longest and most nonpolar, are not absorbed at all --- cf. the old-time remedy of mineral oil for constipation --- so there should be some average time-before-what's-left-is-excreted such as you're looking for, and my (wild) guess is that it would not differ substantially from that for food. You can define an average lifetime in the body for alcohol, since the natural level is zero. Rough guidelines are widespread in the context of drunk driving laws. But this is not really possible for water. One's body is normally full up to the brim with water, and there's no way for the body to distinguish between water molecules recently absorbed and molecules that've been moping around since the Beatles split up. Thus the water entering the toilet bowl after the pit stop is not in general the same water as was in the big coke. If you were to consider for water just the average time between drinking and peeing, it would seem to depend strongly on how well hydrated the body was before the drink, and how much was drunk. During sustained heavy exertion in the sun and dry air one can easily drink a pint of water an hour without peeing at all. On the other hand, if one is willing to drink enough water fast enough, so as to establish a high excess of body water one can pee 8 ounces 15 minutes or less after drinking 8 ounces.

308

Overpotential-Dependent Phase Transformation Pathways  

SciTech Connect

An objective in battery development for higher storage energy density is the design of compounds that can accommodate maximum changes in ion concentration over useful electrochemical windows. Not surprisingly, many storage compounds undergo phase transitions in situ, including production of metastable phases. Unique to this environment is the frequent application of electrical over- and underpotentials, which are the electrical analogs to undercooling and superheating. Surprisingly, overpotential effects on phase stability and transformation mechanisms have not been studied in detail. Here we use synchrotron X-ray diffraction performed in situ during potentiostatic and galvanostatic cycling, combined with phase-field modeling, to reveal a remarkable dependence of phase transition pathway on overpotential in the model olivine Li{sub 1-x}FePO{sub 4}. For a sample of particle size {approx}113 nm, at both low (e.g., <20 mV) and high (>75 mV) overpotentials a crystal-to-crystal olivine transformation dominates, whereas at intermediate overpotentials a crystalline-to-amorphous phase transition is preferred. As particle sizes decrease to the nanoscale, amorphization is further emphasized. Implications for battery use and design are considered.

Y Kao; M Tang; N Meethong; J Bai; W Carter; Y Chiang

2011-12-31T23:59:59.000Z

309

Sources of biogenic methane to form marine gas hydrates: In situ production or upward migration?  

SciTech Connect

Potential sources of biogenic methane in the Carolina Continental Rise -- Blake Ridge sediments have been examined. Two models were used to estimate the potential for biogenic methane production: (1) construction of sedimentary organic carbon budgets, and (2) depth extrapolation of modern microbial production rates. While closed-system estimates predict some gas hydrate formation, it is unlikely that >3% of the sediment volume could be filled by hydrate from methane produced in situ. Formation of greater amounts requires migration of methane from the underlying continental rise sediment prism. Methane may be recycled from below the base of the gas hydrate stability zone by gas hydrate decomposition, upward migration of the methane gas, and recrystallization of gas hydrate within the overlying stability zone. Methane bubbles may also form in the sediment column below the depth of gas hydrate stability because the methane saturation concentration of the pore fluids decreases with increasing depth. Upward migration of methane bubbles from these deeper sediments can add methane to the hydrate stability zone. From these models it appears that recycling and upward migration of methane is essential in forming significant gas hydrate concentrations. In addition, the depth distribution profiles of methane hydrate will differ if the majority of the methane has migrated upward rather than having been produced in situ.

Paull, C.K.; Ussler, W. III; Borowski, W.S.

1993-09-01T23:59:59.000Z

310

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Juveniles, 2007-2008 Report of Research.  

SciTech Connect

This report provides results from an ongoing project to monitor the migration behavior and survival of wild juvenile spring/summer Chinook salmon in the Snake River Basin. Data reported is from detections of PIT tagged fish during late summer 2007 through mid-2008. Fish were tagged in summer 2007 by the National Marine Fisheries Service (NMFS) in Idaho and by the Oregon Department of Fish and Wildlife (ODFW) in Oregon. Our analyses include migration behavior and estimated survival of fish at instream PIT-tag monitors and arrival timing and estimated survival to Lower Granite Dam. Principal results from tagging and interrogation during 2007-2008 are listed below: (1) In July and August 2007, we PIT tagged and released 7,390 wild Chinook salmon parr in 12 Idaho streams or sample areas. (2) Overall observed mortality from collection, handling, tagging, and after a 24-hour holding period was 1.4%. (3) Of the 2,524 Chinook salmon parr PIT tagged and released in Valley Creek in summer 2007, 218 (8.6%) were detected at two instream PIT-tag monitoring systems in lower Valley Creek from late summer 2007 to the following spring 2008. Of these, 71.6% were detected in late summer/fall, 11.9% in winter, and 16.5% in spring. Estimated parr-to-smolt survival to Lower Granite Dam was 15.5% for the late summer/fall group, 48.0% for the winter group, and 58.5% for the spring group. Based on detections at downstream dams, the overall efficiency of VC1 (upper) or VC2 (lower) Valley Creek monitors for detecting these fish was 21.1%. Using this VC1 or VC2 efficiency, an estimated 40.8% of all summer-tagged parr survived to move out of Valley Creek, and their estimated survival from that point to Lower Granite Dam was 26.5%. Overall estimated parr-to-smolt survival for all summer-tagged parr from this stream at the dam was 12.1%. Development and improvement of instream PIT-tag monitoring systems continued throughout 2007 and 2008. (4) Testing of PIT-tag antennas in lower Big Creek during 2007-2008 showed these antennas (and anchoring method) are not adequate to withstand high spring flows in this drainage. Future plans involve removing these antennas before high spring flows. (5) At Little Goose Dam in 2008, length and/or weight were taken on 505 recaptured fish from 12 Idaho stream populations. Fish had grown an average of 40.1 mm in length and 10.6 g in weight over an average of 288 d. Their mean condition factor declined from 1.25 at release (parr) to 1.05 at recapture (smolt). (6) Mean release lengths for detected fish were significantly larger than for fish not detected the following spring and summer (P < 0.0001). (7) Fish that migrated through Lower Granite Dam in April and May were significantly larger at release than fish that migrated after May (P < 0.0001) (only 12 fish migrated after May). (8) In 2008, peak detections at Lower Granite Dam of parr tagged during summer 2007 (from the 12 stream populations in Idaho and 4 streams in Oregon) occurred during moderate flows of 87.5 kcfs on 7 May and high flows of 197.3 kcfs on 20 May. The 10th, 50th, and 90th percentile passage occurred on 30 April, 11 May, and 23 May, respectively. (9) In 2007-2008, estimated parr-to-smolt survival to Lower Granite Dam for Idaho and Oregon streams (combined) averaged 19.4% (range 6.2-38.4% depending on stream of origin). In Idaho streams the estimated parr-to-smolt survival averaged 21.0%. This survival was the second highest since 1993 for Idaho streams. Relative parr densities were lower in 2007 (2.4 parr/100 m{sup 2}) than in all previous years since 2000. In 2008, we observed low-to-moderate flows prior to mid-May and relatively cold weather conditions throughout the spring migration season. These conditions moved half of the fish through Lower Granite Dam prior to mid-May; then high flows moved 50 to 90% of the fish through the dam in only 12 days. Clearly, complex interrelationships of several factors drive the annual migrational timing of the stocks.

Achord, Stephen; Sandford, Benjamin P.; Hockersmith, Eric E. [Northwest Fisheries Science Center

2009-05-26T23:59:59.000Z

311

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time  

E-Print Network (OSTI)

Female Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Amy:56:27.6 Deborah Mc Eligot Deborah Storrings Male Team Overall Name Age Rank Time Rank Time Rank Time Pace Rank Time Rank Time Pace Time 1 Macon Fessenden 20 1 5:42.2 2 0:26.9 1 34:29.7 3:23 1 0:12.8 1 17:41.1 3

Suzuki, Masatsugu

312

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate and Nylon 6 by Dynamic Permeation Cell Method  

E-Print Network (OSTI)

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP); however

Heller, Barbara

313

Summary Results for Brine Migration Modeling Performed by LANL, LBNL and SNL for the Used Fuel Disposition Program  

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

The report summarizes laboratory and field observations and numerical modeling related to coupledprocesses involving brine and vapor migration in geologic salt, focusing on recent developments and...

314

Watching the acetylene vinylidene intramolecular reaction in real time  

E-Print Network (OSTI)

It is a long-standing dream of scientists to capture the ultra-fast dynamics of molecular or chemical reactions in real time and to make a molecular movie. With free-electron lasers delivering extreme ultraviolet (XUV) light at unprecedented intensities, in combination with pump-probe schemes, it is now possible to visualize structural changes on the femtosecond time scale in photo-excited molecules. In hydrocarbons the absorption of a single photon may trigger the migration of a hydrogen atom within the molecule. Here, such a reaction was filmed in acetylene molecules (C2H2) showing a partial migration of one of the protons along the carbon backbone which is consistent with dynamics calculations on ab initio potential energy surfaces. Our approach opens attractive perspectives and potential applications for a large variety of XUV-induced ultra-fast phenomena in molecules relevant to physics, chemistry, and biology.

Jiang, Y H; Rudenko, A; Madjet, M E; Vendrell, O; Kurka, M; Schnorr, K; Foucar, L; Kübel, M; Herrwerth, O; Lezius, M; Kling, M F; van Tilborg, J; Belkacem, A; Ueda, K; Düsterer, S; Treusch, R; Schröter, C D; Santra, R; Ullrich, J; Moshammer, R

2014-01-01T23:59:59.000Z

315

Pathway Controlled Penetration (PcP)  

SciTech Connect

The technical approach employs advanced computational simulation tools to demonstrate how current assets can destroy RWK-RFI-12-0001's HDBT, a tunnel complex with two portals built into the base of a granite mountain. The granite over layer is assumed to be 60 meters thick over both portals and 80 meters over the facility's mission space. Key S&T is the completed development of a highly innovative viscoplastic fracture material model, 3D parallel gas-fracture capabilities into FDEM, and a stochastic handling of the material properties. Phase I - Develop and validate code simulation tools: (1) develop, incorporate and validate AZ-Frac material model for granite; and (2) Develop and incorporate gas-driven-fracture modeling into LANL's FDEM MUNROU code; (3) Develop and incorporate stochastic features into FDEM modeling. Phase II - Conduct PcP analysis on above HDBT: (1) Acquire HDBT design data, develop simulation model; and (2) Evaluate and select most promising defeat alternative. Phase III - Deliver code, train Service target analysts, and conduct simulations against real world HDBTs. PcP uses advanced computer simulations to enhance HDBT functional defeat efforts. Newly developed material models that account for fractural energy coupled with the finite discrete element methodology (FDEM) will provide targeting packages that will create penetration avenues for current or future lethality options. This novel computational approach requires full 3D geologic and structure characterization as well as significant high performance computing capabilities. The goal is to distinctively alter the targeting paradigm by leveraging critical DoD assets along with insitu geologic strata. In other words, assets will utilize underground rock structure to their benefit by creating rubbilization zones that will allow pathway controlled penetration.

Knight, Earl E. [Los Alamos National Laboratory; Rougier, Esteban [Los Alamos National Laboratory; Zubelewicz, Aleksander [Los Alamos National Laboratory

2012-08-29T23:59:59.000Z

316

Controlling plasma distributions as driving forces for ion migration during fs laser writing  

E-Print Network (OSTI)

The properties of structures written inside dielectrics with high repetition rate femtosecond lasers are known to depend strongly on the complex interplay of a large number of writing parameters. Recently, ion migration within the laser-excited volume has been identified as a powerful mechanism for changing the local element distribution and producing efficient optical waveguides. In this work it is shown that the transient plasma distribution induced during laser irradiation is a reliable monitor for predicting the final refractive index distribution of the waveguide caused by ion migration. By performing in-situ plasma emission microscopy during the writing process inside a La-phosphate glass it is found that the long axis of the plasma distribution determines the axis of ion migration, being responsible for the local refractive index increase. This observation is also valid when strong positive or negative spherical aberration is induced, greatly deforming the focal volume and inverting the index profile. ...

Fernandez, Toney Teddy; Hoyo, Jesus; Sotillo, Belen; Fernandez, Paloma; Solis, Javier

2014-01-01T23:59:59.000Z

317

Modeling gas and brine migration for assessing compliance of the Waste Isolation Pilot Plant  

SciTech Connect

At the request of the WIPP Project Integration Office (WPIO) of the DOE, the WIPP Performance Assessment (PA) Department of Sandia National Laboratories (SNL) has completed preliminary uncertainty and sensitivity analyses of gas and brine migration away from the undisturbed repository. This paper contains descriptions of the numerical model and simulations, including model geometries and parameter values, and a summary of major conclusions from sensitivity analyses. Because significant transport of contaminants can only occur in a fluid (gas or brine) medium, two-phase flow modeling can provide an estimate of the distance to which contaminants can migrate. Migration of gas or brine beyond the RCRA ``disposal-unit boundary`` or the Standard`s accessible environment constitutes a potential, but not certain, violation and may require additional evaluations of contaminant concentrations.

Vaughn, P. [Applied Physics, Inc., Albuquerque, NM (United States); Butcher, B. [Sandia National Labs., Albuquerque, NM (United States); Helton, J. [Arizona State Univ., Tempe, AZ (United States); Swift, P. [Tech. Reps., Inc., Albuquerque, NM (United States)

1993-10-01T23:59:59.000Z

318

Interim Report: CHEMICAL SPECIES OF MIGRATING RADIONUCLIDES AT COMMERCIAL SHALLOW LAND BURIAL SITES  

SciTech Connect

This is the first quarterly report for .the project "Chemical Species of Migrating Radionuclides at Commercial Shallow Land Burial Site" under the new reporting schedule requested by the sponsor. Future reports will be issued following each fiscal quarter, with the next report scheduled in October, 1982. The primary purpose of this project is to develop an understanding of the processes responsible for radionuclide migration at low-level waste burial sites. Chemical measurements of waste trench leachate and identification of chemical changes in leachate during migration will provide a basis for geochemical waste transport models. This project will produce for the U.S. Nuclear Regulatory Commission information to support guidance for implementation of 10 CFR 61, particularly in the development of criteria for low level waste disposal site selection, management, permanent closure and monitoring. Topics covered include: Experimental Trench and Well Study; Chemical Species Characterization; Specific Radionuclide Mapping; Organic Complexing Compounds,

Kirby,, L. J.; Rickard,, W. H.; Toste,, A. P.

1982-08-01T23:59:59.000Z

319

Sexual and Apomictic Reproduction in Hieracium subgenus Pilosella Are Closely Interrelated Developmental Pathways  

Science Journals Connector (OSTI)

...embryo. This entire process, including endosperm...sexuality and apomixis are interrelated pathways that share...pilosella are closely interrelated developmental pathways...embryo. This entire process, including endosperm...sexuality and apomixis are interrelated pathways that share...

Matthew R. Tucker; Ana-Claudia G. Araujo; Nicholas A. Paech; Valerie Hecht; Ed D. L. Schmidt; Jan-Bart Rossell; Sacco C. de Vries; Anna M. G. Koltunow

2003-06-13T23:59:59.000Z

320

immigration in prime time spanish television. Pathways towards inferring modern racism from content analysis  

E-Print Network (OSTI)

of the image of immigra- tion in television fiction based on both Cultivation Theory and previous studies about the representation of ethnic and immigrant minorities in television fiction (Greenberg, Mastro & Brand, 2002 (Green- berg, Mastro & Brand, 2002; Harwood & Anderson, 2002; Mastro & Behm-Morawitz, 2005; Mastro

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "migration pathway timing" 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

Prediction of diffusion coefficients in cement-based materials on the basis of migration experiments  

SciTech Connect

The chloride diffusion and migration coefficients of 15 different mortar mixtures were systematically compared. Test parameters included water/binder ratio (0.25 and 0.45), type of binder (ASTM type 1, ASTM type 3, and ASTM type 5), use of silica fume and sand volume fractions (0%, 30%, and 50%). Test results indicate the various ways of evaluating chloride transport coefficients generally yield much different values. Test results also show that the assumption of non interacting diffusing flows, used in the mathematical treatment of diffusion and migration equations, is most probably incorrect.

Delagrave, A.; Marchand, J.; Samson, E. [Univ. Laval, Ste-Foy, Quebec (Canada)] [Univ. Laval, Ste-Foy, Quebec (Canada)

1996-12-01T23:59:59.000Z

322

Hydrocarbon solubility and its migration processes: a look at the present status  

SciTech Connect

In this study we review the present status of knowledge of solubility of hydrocarbons and its implications on primary migration processes. The intent is to examine the solubility and the transportation mechanisms relevant to geopressured-geothermal reservoirs, although the discussion included here accommodates a wide range of related aspects. Influences of parameters associated with hydrocarbon (especially methane) solubility have been studied. We have sought to evaluate several primary hydrocarbon migration processes and to point out their attractive features as well as their limitations. A brief discussion of hydrocarbon generation processes is also included.

Mamun, C.K.; Ohkuma, H.; Sepehrnoori, K.

1985-12-01T23:59:59.000Z

323

MONITORING AND EVALUATION OF SMOLT MIGRATION IN THE COLUMBIA BASIN  

E-Print Network (OSTI)

of Energy Bonneville Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208 Island, Lower Granite, McNary, John Day, and Bonneville Dams using Program RealTime Prepared by: Richard Testing Framework for RPA Improvement as Stated in the 2000 Federal Columbia River Power System (FCRPS

Washington at Seattle, University of

324

MONITORING AND EVALUATION OF SMOLT MIGRATION IN THE COLUMBIA BASIN  

E-Print Network (OSTI)

of Energy Bonneville Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208 Island, Lower Granite, McNary, John Day, and Bonneville Dams using Program RealTime Prepared by: Richard as Stated in the 2000 Federal Columbia River Power System (FCRPS) Biological Opinion. Technical Report

Washington at Seattle, University of

325

MONITORING AND EVALUATION OF SMOLT MIGRATION IN THE COLUMBIA BASIN  

E-Print Network (OSTI)

Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208-3621 Project Number Granite, McNary, John Day, and Bonneville Dams using Program RealTime Prepared by: Richard L. Townsend Avenue, Suite 1820 Seattle, Washington 98101-2509 Prepared for: U.S. Department of Energy Bonneville

Washington at Seattle, University of

326

Hydraulic Characteristics of the Lower Snake River During Periods of Juvenile Fall Chinook Migration  

SciTech Connect

This report documents a four-year study to assess hydraulic conditions in the lower Snake River. The work was conducted for the Bonneville Power Administration, U.S. Department of Energy, by the Pacific Northwest National Laboratory. Cold water released from the Dworshak Reservoir hypolimnion during mid- to late-summer months cools the Clearwater River far below equilibrium temperature. The volume of released cold water augments the Clearwater River, and the combined total discharge is on the order of the Snake River discharge when the two rivers meet at their confluence near the upstream edge of Lower Granite Reservoir. With typical temperature differences between the Clearwater and Snake rivers of 10°C or more during July and August, the density difference between the two rivers during summer flow augmentation periods is sufficient to stratify Lower Granite Reservoir as well as the other three reservoirs downstream. Because cooling of the river is desirable for migrating juvenile fall Chinook salmon (Oncorhynchus tshawytscha) during this same time period, the amount of mixing and cold water entrained into Lower Granite Reservoir’s epilimnion at the Clearwater/Snake River confluence is of key biological importance to juvenile fall Chinook salmon. Data collected during this project indicates the three reservoirs downstream of Lower Granite also stratify as direct result of flow augmentation from Dworshak Reservoir. These four lower Snake reservoirs are also heavily influenced by wind forcing at the water’s surface, and during periods of low river discharge, often behave like a two-layer lake. During these periods of stratification, lower river discharge, and wind forcing, the water in the upper layer of the reservoir is held in place or moves slightly upstream. This upper layer is also exposed to surface heating and may warm up to temperatures close to equilibrium temperature. The depth of this upper warm layer and its direction of travel may also be of key biological importance to juvenile fall Chinook salmon. This report describes field data collection, modeling, and analysis of hydrodynamic and temperature conditions in the Lower Granite Reservoir during the summer flow augmentation periods of 2002, 2003, and 2004 plus a brief one-week period in 2005 of Lower Monumental, Little Goose, and Lower Granite Reservoirs. Circulation patterns in all four lower Snake River reservoirs were numerically simulated for periods of 2002, 2003, 2004, and 2005 using CE-QUAL-W2. Simulation results show that these models are sufficiently capable of matching diurnal and long term temperature and velocity changes in the reservoirs. In addition, the confluence zone of the Clearwater and Snake rivers was modeled using the 3-D model Flow3-D. This model was used to better understand mixing processing and entrainment. Once calibrated and validated, the reservoir models were used to investigate downstream impacts of alternative reservoir operation schemes, such as increasing or decreasing the ratio of Clearwater to Snake discharge. Simulation results were also linked with the particle tracking model FINS to better understand alterations of integrated metrics due to alternative operation schemes. These findings indicate that significant alterations in water temperature throughout the lower Snake River are possible by altering hypolimnetic discharges from Dworshak Reservoir and may have a significant impact on the behavior of migrating juvenile fall Chinook salmon during periods of flow augmentation.

Cook, Chris B.; Dibrani, Berhon; Richmond, Marshall C.; Bleich, Matthew D.; Titzler, P. Scott; Fu, Tao

2006-01-30T23:59:59.000Z

327

Pathway representation using finite state automata and comparison using the NCI thesaurus.  

E-Print Network (OSTI)

??Can one classify biochemical pathways based on their topology? What is the topology of a biochemical pathway? What are the fundamental principles underlying different biochemical… (more)

Leung, Samuel

2010-01-01T23:59:59.000Z

328

E-Print Network 3.0 - activating intrinsic pathway Sample Search...  

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

or inhibition of the Notch signaling pathway as well as the periodic... of the pathway proteins are intrinsically disordered and that the mechanism of their interaction likely...

329

A Systems Biology Approach to Develop Models of Signal Transduction Pathways  

E-Print Network (OSTI)

.......................................................................................... ix LIST OF FIGURES ................................................................................................... xiii LIST OF TABLES .................................................................................................... xvi 1.... INTRODUCTION ............................................................................................... 1 1.1 Signal Transduction Pathway ............................................................... 1 1.2 Signal Transduction Pathway Modeling...

Huang, Zuyi

2011-10-21T23:59:59.000Z

330

E-Print Network 3.0 - accelerating ultimate pathways Sample Search...  

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

Computer Technologies and Information Sciences 17 A unified mechanism for protein folding: Predetermined pathways with optional errors Summary: ; therefore the off-pathway...

331

Time Brightness  

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

Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Cosmology from . . . Time Brightness ... . . . 50-100 Fields Lunar Calendar Scheduled Follow-Up Imaging at Hubble, Cerro Tololo, WIYN, Isaac Newton Scheduled Follow-Up Spectroscopy at Keck Almost 1000 Galaxies per Field RESULT: ~24 Type Ia supernovae discovered while still brightening, at new moon Berkeley Lab Keck WIYN Cerro Tololo Isaac Newton Hubble Strategy We developed a strategy to guarantee a group of supernova discoveries on a certain date. Just after a new moon, we observe some 50 to 100 high-galactic lattitute fields-each containing almost a thousand high-redshift galaxies-in two nights on the Cerro Tololo 4-meter telescope with Tyson & Bernstein's wide-field camera. We return three weeks later to observe the same

332

Climate VISION: Private Sector Initiatives: Mining: Technology Pathways  

Office of Scientific and Technical Information (OSTI)

Technology Pathways Technology Pathways As part of the mining vision process, industry develops technology roadmaps to identify critical pathways for the R&D needed to reach their goals. These roadmaps aid both industry and government in making decisions to support R&D critical to the industry's vision of the future. Industry Vision & Roadmaps The following documents are available for download as Adobe PDF documents. Download Acrobat Reader. The Mining Industry of the Future Vision (PDF 122 KB) The industry's unified Vision document outlines broad goals for the future. As part of the mining vision process, industry develops technology roadmaps to identify critical pathways for the R&D needed to reach their goals. These roadmaps aid both industry and government in making decisions to

333

Photovoltaic Lifetime & Degradation Science Statistical Pathway Development: Acrylic Degradation  

E-Print Network (OSTI)

Photovoltaic Lifetime & Degradation Science Statistical Pathway Development: Acrylic Degradation, USA ABSTRACT In order to optimize and extend the life of photovoltaics (PV) modules, scientific photovoltaics. The statisti- cally significant relationships were investigated using lifetime and degradation

Rollins, Andrew M.

334

Adhesion Molecule-Mediated Hippo Pathway Modulates Hemangioendothelioma Cell Behavior  

Science Journals Connector (OSTI)

...endothelial cell adhesion molecules in brain microvascular endothelial cell proliferation...pathway parameters, comparing wild-type brain microvascular endothelial cells (7, 8...Wisconsin, Madison, WI) (6, 9). Brain endothelial cells (BEC) were isolated...

Masayuki Tsuneki; Joseph A. Madri

2014-09-29T23:59:59.000Z

335

Possible Pathways for Increasing Natural Gas Use for Transportation...  

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

emissions reduction. * NG use can provide a pathway for future bio-based fuels (e.g., biogas and gas + biomass-to-liquids GBTL). Natural Gas Use in Transportation Offers...

336

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

permission. QC-06-053 Heat Transfer Pathways in Underfloorchange the dynamics of heat transfer within a room as wellchange the dynamics of heat transfer within a room as well

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

337

A graph layout algorithm for drawing metabolic pathways  

Science Journals Connector (OSTI)

......out thanks to the support of the German Ministry for Education and Sciences (BMBF) (Project Bioregio 0312212) and the Klaus...59. Michal,G. (1993) Biochemical Pathways (poster). Boehringer Mannheim GmbH. Michal,G. (1999......

Moritz Y. Becker; Isabel Rojas

2001-05-01T23:59:59.000Z

338

Functional Consequences in Metabolic Pathways from Phylogenetic Profiles  

Science Journals Connector (OSTI)

Phylogenetic profiling is an ingenious computational method for identifying functional linkage between proteins. It is based on the assumption that a set of proteins involved in a common pathway or composing a structural complex tends to evolve in a ...

Yonatan Bilu; Michal Linial

2002-09-01T23:59:59.000Z

339

A Usability Assessment of the Engineering Pathway Educational Digital Library   

E-Print Network (OSTI)

to be helpful to me.   Advanced Search  Engineering Pathway When using the “Advanced Search” at the top of the linked to a  combined advanced search (both K?12 and higher 

Robinson, Stefanie L.

2008-01-01T23:59:59.000Z

340

Development of white matter pathways in typically developing preadolescent children  

E-Print Network (OSTI)

Author Manuscript (CST, ATR, SLF) when comparing children toand frontal regions. The SLF is a major pathway betweenManuscript CST ATR IFO ILF SLF Cing. (CG) UNC Slope per

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

Conference of the Society of Heat- ing, Air-Conditioning,permission. QC-06-053 Heat Transfer Pathways in Underfloorthis paper: Results of heat gain shown in this theoretical

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

342

Pathways for Implementing REDD+: Experiences from Carbon Markets and  

Open Energy Info (EERE)

Pathways for Implementing REDD+: Experiences from Carbon Markets and Pathways for Implementing REDD+: Experiences from Carbon Markets and Communities Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Pathways for Implementing REDD+: Experiences from Carbon Markets and Communities Agency/Company /Organization: UNEP-Risoe Centre Sector: Land Focus Area: Forestry Topics: Finance, Implementation Resource Type: Lessons learned/best practices Website: www.acp-cd4cdm.org/media/237951/pathwaysimplementingreddplus.pdf References: Pathways for Implementing REDD+: Experiences from Carbon Markets and Communities[1] "The articles presented discuss and propose ideas about how to create incentives to participate in REDD+, its implementation, and possible financing; how to involve the private sector; what are the experiences from

343

A pathway to diphosphorus from the dissociation of photoexcited tetraphosphorus  

E-Print Network (OSTI)

We report a computational study of an energetically favorable pathway for the excited-state dissociation of a tetrahedral P[subscript 4] molecule into two P[subscript 2] molecules via the simultaneous breaking of four ...

Wang, Lee-Ping

344

Degradation Pathway Models for Photovoltaics Module Lifetime Performance  

E-Print Network (OSTI)

Degradation Pathway Models for Photovoltaics Module Lifetime Performance Nicholas R. Wheeler, Laura data from Underwriter Labs, featuring measurements taken on 18 identical photovoltaic (PV) modules in modules and their effects on module performance over lifetime. Index Terms--photovoltaics, statistical

Rollins, Andrew M.

345

Effects of post-breeding moult and energetic condition on timing of songbird migration into the tropics  

Science Journals Connector (OSTI)

...was in southern Florida 15-17 October...to be driven by fuel deposition rate at stopover sites...by increasing fuel deposition rates and shortening...predict return rate in a migratory...2008 Increased energy expenditure but...

2011-01-01T23:59:59.000Z

346

Effects of O vacancies and N or Si substitutions on Li+ migration in Li3PO4 electrolytes  

E-Print Network (OSTI)

Effects of O vacancies and N or Si substitutions on Li+ migration in Li3PO4 electrolytes from first constructed realistic models of various types of isolated defects in crystalline Li3PO4 involving O vacancies on the production and migration of mobile Li ions. We find that mobile Li-ion vacancies are stabilized by removing

Holzwarth, Natalie

347

Genome-wide discovery of missing genes in biological pathways of prokaryotes  

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

Genome-wide Genome-wide discovery of missing genes in biological pathways of prokaryotes Yong Chen 1,3,4,5 , Fenglou Mao 1,2 , Guojun Li 1,3 , Ying Xu 1,2,6* From The Ninth Asia Pacific Bioinformatics Conference (APBC 2011) Incheon, Korea. 11-14 January 2011 Abstract Background: Reconstruction of biological pathways is typically done through mapping well-characterized pathways of model organisms to a target genome, through orthologous gene mapping. A limitation of such pathway-mapping approaches is that the mapped pathway models are constrained by the composition of the template pathways, e.g., some genes in a target pathway may not have corresponding genes in the template pathways, the so-called "missing gene" problem. Methods: We present a novel pathway-expansion method for identifying additional genes that are possibly involved in a target pathway after pathway mapping,

348

Metformin inhibits inflammatory response via AMPK-PTEN pathway in vascular smooth muscle cells  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer PTEN was induced by metformin and inhibited by compound C and AMPK siRNA. Black-Right-Pointing-Pointer Metformin suppressed TNF-{alpha}-induced COX-2 and iNOS mRNA expression. Black-Right-Pointing-Pointer Compound C and bpv (pic) increased iNOS and COX-2 protein expression. Black-Right-Pointing-Pointer NF-{kappa}B activation was restored by inhibiting AMPK and PTEN. Black-Right-Pointing-Pointer AMPK and PTEN regulated TNF-{alpha}-induced ROS production in VSMCs. -- Abstract: Atherosclerosis is a chronic inflammation of the coronary arteries. Vascular smooth muscle cells (VSMCs) stimulated by cytokines and chemokines accelerate the inflammatory response and migrate to the injured endothelium during the progression of atherosclerosis. Activation of AMP activated protein kinase (AMPK), a key sensor maintaining metabolic homeostasis, suppresses the inflammatory response. However, how AMPK regulates the inflammatory response is poorly understood. To identify the mechanism of this response, we focused on phosphatase and tensin homolog (PTEN), which is a negative regulator of inflammation. We investigated that activation of AMPK-induced PTEN expression and suppression of the inflammatory response through the AMPK-PTEN pathway in VSMCs. We treated with the well-known AMPK activator metformin to induce PTEN expression. PTEN was induced by metformin (2 mM) and inhibited by compound C (10 {mu}M) and AMPK siRNA. Tumor necrosis factor-alpha (TNF-{alpha}) was used to induce inflammation. The inflammatory response was confirmed by cyclooxygenase (COX)-2, inducible nitric oxide synthase (iNOS) expression, and activation of nuclear factor (NF)-{kappa}B. Metformin suppressed COX-2 and iNOS mRNA and protein expression dose dependently. Treatment with compound C and bpv (pic) in the presence of metformin, iNOS and COX-2 protein expression increased. NF-{kappa}B activation decreased in response to metformin and was restored by inhibiting AMPK and PTEN. Inhibiting AMPK and PTEN restored ROS levels stimulated with TNF-{alpha}. Taken together, PTEN could be a possible downstream regulator of AMPK, and the AMPK-PTEN pathway might be important in the regulation of the inflammatory response in VSMCs.

Kim, Sun Ae [Department of Pharmacology, Aging-Associated Vascular Disease Research Center, College of Medicine, Yeungnam University, Daegu 705-717 (Korea, Republic of)] [Department of Pharmacology, Aging-Associated Vascular Disease Research Center, College of Medicine, Yeungnam University, Daegu 705-717 (Korea, Republic of); Choi, Hyoung Chul, E-mail: hcchoi@med.yu.ac.kr [Department of Pharmacology, Aging-Associated Vascular Disease Research Center, College of Medicine, Yeungnam University, Daegu 705-717 (Korea, Republic of)

2012-09-07T23:59:59.000Z

349

The long range migration of hydrogen through Zircaloy in response to tensile and compressive stress gradients  

SciTech Connect

Zircaloy-4, which is used widely as a core structural material in pressurized water reactors (PWRs), picks up hydrogen during service. Hydrogen solubility in Zircaloy-4 is low and zirconium hydride phases precipitate after the Zircaloy-4 lattice becomes supersaturated with hydrogen. These hydrides embrittle the Zircaloy-4, degrading its mechanical performance as a structural material. Because hydrogen can move rapidly through the Zircaloy-4 lattice, the potential exists for large concentrations of hydride to accumulate in local regions of a Zircaloy component remote from its point of entry into the component. Much has been reported in the literature regarding the long range migration of hydrogen through Zircaloy under concentration gradients and temperature gradients. Relatively little has been reported, however, regarding the long range migration of hydrogen under stress gradients. This paper presents experimental results regarding the long range migration of hydrogen through Zircaloy in response to both tensile and compressive stress gradients. The importance of this driving force for hydrogen migration relative to concentration and thermal gradients is discussed.

Kammenzind, B.F.; Berquist, B.M.; Bajaj, R.; Kreyns, P.H.; Franklin, D.G.

1998-11-01T23:59:59.000Z

350

Linkages among climate change, crop yields and MexicoUS cross-border migration  

E-Print Network (OSTI)

Linkages among climate change, crop yields and Mexico­US cross-border migration Shuaizhang Fenga assumed, with other factors held constant, by approximately the year 2080, climate change is estimated perspective given that many regions, espe- cially developing countries, are expected to experience significant

Oppenheimer, Michael

351

Migration of the subtropical front as a modulator of glacial climate  

Science Journals Connector (OSTI)

... as the extent of Northern Hemisphere ice sheets, sea level and other temperature records, point towards a fluctuating severity of glacial periods, particularly during the more extreme glacial stadials ... by astronomical parameters, and . We investigate the migration of the STF in the southern Indian Ocean over multiple glacial cycles to explore whether the latitude of the STF acts as ...

Edouard Bard; Rosalind E. M. Rickaby

2009-07-16T23:59:59.000Z

352

SSB Functions as a Sliding Platform that Migrates on DNA via Reptation  

E-Print Network (OSTI)

SSB Functions as a Sliding Platform that Migrates on DNA via Reptation Ruobo Zhou,1 Alexander G Hughes Medical Institute, Urbana, IL 61801, USA 6Present address: Department of Chemistry and Chemical is perturbed, suggesting that even in crowded cellular conditions SSB can act as a sliding platform to recruit

Lohman, Timothy M.

353

Mortality of bats at wind turbines links to nocturnal insect migration?  

E-Print Network (OSTI)

REVIEW Mortality of bats at wind turbines links to nocturnal insect migration? Jens Rydell & Lothar. Modern wind turbines seem to reach high enough into the airspace to interfere with the migratory movements of insects. The hypothesis is consistent with recent observa- tions of bats at wind turbines

Paris-Sud XI, Université de

354

MDE and Mobile agents: another reflection on the agent migration Tahar GHERBI  

E-Print Network (OSTI)

MDE and Mobile agents: another reflection on the agent migration Tahar GHERBI Computer science code. Mobile agents are a very interesting technology to develop applications for mobile and distributed environments. A mobile agent is essentially a computer program that acts autonomously on behalf

Paris-Sud XI, Université de

355

Radial migration of the Sun in the Milky Way: a statistical study  

Science Journals Connector (OSTI)

......the metallicity of the Sun is not unusual with respect...valid to assume that the Sun migrated from the inner...determination of the effective temperature of the stars in the data...peak of the metallicity distribution function to around the...observation that the Sun is metal rich with respect......

C. A. Martínez-Barbosa; A. G. A. Brown; S. Portegies Zwart

2015-01-01T23:59:59.000Z

356

Investigating the lowermost mantle using migrations of long-period S–ScS data  

Science Journals Connector (OSTI)

......this study, a global grid of equally spaced points...A full wavefield or hybrid ray theory-finite difference...remembered that the migration grid spacing and frequency...handling and computational infrastructure have been supported by...A two dimensional PSV hybrid method and its application......

K. Chambers; J. H. Woodhouse

2006-08-01T23:59:59.000Z

357

Petrographic, geochemical, and paleohydrologic evidence of nature of petroleum migration in Illinois basin  

SciTech Connect

Detailed studies of the petrography and geochemistry of petroleum source rocks, the geochemistry of petroleum accumulations, and the paleohydrology of the Illinois basin suggest an episode of long-range migration of Devonian-sourced petroleum during a period of regional ground water flow. Petrographic analyses of samples of the New Albany Shale group (Devonian/Mississippian) were used to define lateral and vertical variation in composition and thermal maturity of organic matter within the basin. These data delineate likely New Albany Shale group petroleum source areas. GC, GCMS, and carbon isotopic analyses of thermally mature New Albany Shale in southeastern Illinois and Silurian-reservoired petroleum samples from central Illinois were used in making oil-oil and oil-source rock correlations. These correlations indicate long-range lateral and downward cross-stratigraphic net migration. Compaction-driven and elevation head-driven ground-water flows within the basin were numerically modeled using available stratigraphic, structural, and hydrologic data. Calculations based on compaction-driven flow show the possibility of down-stratigraphic migration. Compaction-driven flow, however, cannot explain the amount of lateral transport inferred. Regional ground-water flow due to the uplift of the Pascola arch could explain the long-range lateral migration. Calculations of the effects of advective heat transport by elevation head-driven flow agree with estimates of temperatures made from fluid inclusions in basin mineralization.

Bethke, C.M.; Pruitt, J.D.; Barrows, M.H.

1984-04-01T23:59:59.000Z

358

Author's personal copy In situ TEM studies of oxygen vacancy migration for electrically induced resistance  

E-Print Network (OSTI)

vacancy migration Resistance change effect CeO2 A B S T R A C T Oxide materials with resistance hysteresis resistance change effect in cerium oxides Peng Gao, Zhenzhong Wang, Wangyang Fu, Zhaoliang Liao, Kaihui Liu number of insulating oxides with resistance switching effect have attracted extensive interest, ranging

Wang, Wei Hua

359

Migratory connectivity and population-specific migration routes in a long-distance migratory bird  

Science Journals Connector (OSTI)

...using a 6 mm-Teflon ribbon harness. We used 9.5 and 12 g solar satellite transmitters (PTT-100 series, Microwave Telemetry...subis), despite different migration routes at the Gulf of Mexico. The Auk 130, 291-296. ( doi:10.1525/auk.2013...

2014-01-01T23:59:59.000Z

360

Using Preemptive Thread Migration to Load-Balance Data-Parallel Applications  

E-Print Network (OSTI)

Using Preemptive Thread Migration to Load-Balance Data-Parallel Applications Gabriel Antoniu.Perez}@ens-lyon.fr Abstract. Generic load balancing policies for irregular parallel appli- cations may be efficiently2 runtime system [3]) now provides a generic support for dynamic load balancing, using preemptive

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "migration pathway timing" 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

Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 2000 Annual Report.  

SciTech Connect

This report details the 2000 results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends in the cumulative data collected for this project from Oregon and Idaho streams since 1989.

Achord, Stephen (Northwest and Alaska Fisheries Science Center, Fish Ecology Division, Seattle, WA)

2001-08-01T23:59:59.000Z

362

MigThread: Thread Migration in DSM Systems Institute for Scientific Computing  

E-Print Network (OSTI)

MigThread: Thread Migration in DSM Systems Hai Jiang Institute for Scientific Computing Wayne State University and Cradle Technologies, Inc. vipin@wayne.edu Abstract Distributed Shared Memory (DSM) systems on Networks of Work- stations (NOWs). In this paper, we propose an infrastruc- ture for DSM systems to utilize

Chaudhary, Vipin

363

The Migration of Di use Photon Density Waves through Highly Scattering Media  

E-Print Network (OSTI)

. The radiative transport equation is a more accurate model for the migration of photons in general of Turbid Media: Theory and Applications assumptions that reduce the general transport equation to a di to the transport equation. 2.1 Di usion Approximation to the Transport Equation The linear transport equation

364

Bird orientation: compensation for wind drift in migrating raptors is age dependent  

Science Journals Connector (OSTI)

...Lund, Sweden 3 Grimso Wildlife Research Station, Swedish...potentially strong effect of wind on bird orientation...orientation: compensation for wind drift in migrating raptors...Lund, Sweden 3 Grimso Wildlife Research Station, Swedish...potentially strong effect of wind on bird orientation...

2003-01-01T23:59:59.000Z

365

Evidence for transoceanic migrations by loggerhead sea turtles in the southern Pacific Ocean  

Science Journals Connector (OSTI)

...loggerhead sea turtles in the southern Pacific Ocean M.C. Boyle 1 * N.N. FitzSimmons...behaviour is hypothesized in the South Pacific Ocean as post-hatchling loggerhead...migrations to the southeastern Pacific Ocean, thus emphasizing the need for...

2009-01-01T23:59:59.000Z

366

Swing to SWT and Back: Patterns for API Migration by Wrapping  

E-Print Network (OSTI)

Swing to SWT and Back: Patterns for API Migration by Wrapping Thiago Tonelli Bartolomei-Landau Koblenz, Germany Abstract--Evolving requirements may necessitate API migra- tion--re-engineering an application to replace its dependence on one API with the dependence on another API for the same domain. One

Czarnecki, Krzysztof

367

CHLORINATED HYDROCARBONS IN DOVER SOLE, MICROSTOMUS PACIFICUS: LOCAL MIGRATIONS AND FIN EROSION  

E-Print Network (OSTI)

Verdes discharge site of the Joint Water Pollution Control Plant (JWPCP) submarine outfalls of the County 1952), Dover sole undergo seasonal onshore-offshore migrations (Mearns and Sherwood 1974). Individuals move offshore in the winter and onshore in the summer and have been collected offsouthern California

368

Wavefield extrapolation and amplitude-variation-with-angle migration in highly discontinuous media  

Science Journals Connector (OSTI)

......suppressed in this angle-controlled process. The proposed AVA migration...during the depth extrapolation process. The accuracy of the proposed...model, 62nd Ann. Int. SEG Mtg, New Orleans, Expanded Abstr...heterogeneity, 71st Ann. Int. SEG Mtg, San Antonio, Expanded Abstract......

Jianfeng Zhang; Kees Wapenaar

2003-10-01T23:59:59.000Z

369

Mining Library Migration Graphs Cedric Teyton, Jean-Remy Falleri, Xavier Blanc  

E-Print Network (OSTI)

library in- stead of older collections library"3 . · Incompatibilities: "Added Slf4j in favor of Commons- logging to avoid conflict with Hibernate Validator"4 or "port logging to slf4j (commons-logging has. For example, if a project wants to migrate from Log4J, it may consider SLF4J or Commons Logging as they both

Paris-Sud XI, Université de

370

Sediment Melt-Migration Dynamics in Perennial Antarctic Lake Ice Steven M. Jepsen*  

E-Print Network (OSTI)

melting through laboratory ice at 22 uC in simulated summer conditions, with warmer ice producing faster boundaries was pronounced in laboratory ice warmer than 21 uC. This mechanism produced a flux of 0.1 g m22 hrSediment Melt-Migration Dynamics in Perennial Antarctic Lake Ice Steven M. Jepsen* Edward E. Adams

Priscu, John C.

371

Hydrogen Bond Migration between Molecular Sites Observed with Ultrafast 2D IR Chemical Exchange Spectroscopy  

E-Print Network (OSTI)

Hydrogen Bond Migration between Molecular Sites Observed with Ultrafast 2D IR Chemical ExchangeVed: January 12, 2010 Hydrogen-bonded complexes between phenol and phenylacetylene are studied using ultrafast hydrogen bonding acceptor sites (phenyl or acetylene) that compete for hydrogen bond donors in solution

Fayer, Michael D.

372

Investigating sea turtle migration using DNA markers johi C Avise and Brian W Bowen  

E-Print Network (OSTI)

882 Investigating sea turtle migration using DNA markers johi C Avise and Brian W Bowen University of genetic evidence for `natal homing' in several species of marine turtles, a phenomenon wherein females of the life cycle in most ma- rine turtles includes a long-distance migratory circuit between resident

Avise, John

373

Simulation of bubble migration in a turbulent boundary layer M. Mattson and K. Mahesha  

E-Print Network (OSTI)

Simulation of bubble migration in a turbulent boundary layer M. Mattson and K. Mahesha Aerospace of bubbles injected into a turbulent boundary layer. The Reynolds number of the turbulent boundary layer varies from 420 Re 1800, and the bubble Reynolds number Reb 1. Simulation parameters were chosen to match

Mahesh, Krishnan

374

Novel methods reveal shifts in migration phenology of barn swallows in South Africa  

E-Print Network (OSTI)

1 Novel methods reveal shifts in migration phenology of barn swallows in South Africa Res Altwegg National Biodiversity Institute, P/Bag X7, Claremont 7735, South Africa Animal Demography Unit, Department of Zoology and Department of Statistical Sciences, University of Cape Town, Rondebosch 7701, South Africa

de Villiers, Marienne

375

Oxygen sublattice defect in cobalt oxide : formation, migration, charge localization and thermodynamic processes  

E-Print Network (OSTI)

643 Oxygen sublattice defect in cobalt oxide : formation, migration, charge localization of oxygen defects in CoO using classical simulations. The charge localization in the oxygen vacancy has]. The defect concentration in the oxygen sublattice is several orders of magnitude smaller, but never- theless

Paris-Sud XI, Université de

376

A one-dimensional model of vertical gas plume migration through a heterogeneous porous medium  

E-Print Network (OSTI)

A one-dimensional model of vertical gas plume migration through a heterogeneous porous medium and consequent global warming. Ideally, the injected greenhouse gas stays in the injection zone for a geologic or inadvertently created conduits in the cap rock may result in a gas leakage from primary storage. Even

Patzek, Tadeusz W.

377

A Network Model for The Genesis and Migration of Gas Phase  

E-Print Network (OSTI)

1 A Network Model for The Genesis and Migration of Gas Phase Koukung Alex Chang and W. Brent, of a compositional fluid consisting of water with a dissolved hydrocarbon gas. The model captures both single phase 99% of the (effectively) stored CO2 resides in the liquid phase. Key Words: network model, gas

New York at Stoney Brook, State University of

378

Li ion migration in Li3PO4 electrolytes: Effects of O vacancies and N substitutions  

E-Print Network (OSTI)

Li ion migration in Li3PO4 electrolytes: Effects of O vacancies and N substitutions Y. A. Dua and N structures of isolated defects associated with extrinsic Li ion vacancies and interstitials. In particular the combination of an O vacancy and a N substitution, stabilizing a Li ion vacancy. We also studied the effects

Holzwarth, Natalie

379

Multi-Locus Estimates of Population Structure and Migration in a Fence Lizard Hybrid Zone  

E-Print Network (OSTI)

Multi-Locus Estimates of Population Structure and Migration in a Fence Lizard Hybrid Zone Adam D States of America Abstract A hybrid zone between two species of lizards in the genus Sceloporus (S the processes of lineage divergence and merging. This hybrid zone involves complex interactions between 2

380

Gas injection to inhibit migration during an in situ heat treatment process  

DOE Patents (OSTI)

Methods of treating a subsurface formation are described herein. Methods for treating a subsurface treatment area in a formation may include introducing a fluid into the formation from a plurality of wells offset from a treatment area of an in situ heat treatment process to inhibit outward migration of formation fluid from the in situ heat treatment process.

Kuhlman, Myron Ira (Houston, TX); Vinegar; Harold J. (Bellaire, TX); Baker, Ralph Sterman (Fitchburg, MA); Heron, Goren (Keene, CA)

2010-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

neutralisation distance of acid drainage and migration range of pollutants Bruno LEMIRE  

E-Print Network (OSTI)

on source while neutralisation zone modelling pro- vides information on transfer pathway. Remediation of the sea- son. Sydney, NS IMWA 2010"Mine Water and Innovative Thinking" Wolkersdorfer & Freund (Editors) 35

Boyer, Edmond

382

Controlled entanglement routing between two virtual pathways  

E-Print Network (OSTI)

We demonstrate controlled entanglement routing between bunching and antibunching path-entangled two-photon states in an unbalanced Mach-Zehnder interferometer (UMZI), in which the routing process is controlled by the relative phase difference in the UMZI. Regarding bunching and antibunching path-entangled two-photon states as two virtual ports, we can consider the UMZI as a controlled entanglement router, which bases on the coherent manipulation of entanglement. Half of the entanglement within the input two-photon state is coherently routed between the two virtual ports, while the other is lost due to the time distinguishability introduced by the UMZI. Pure bunching or antibunching path entangled two-photon states are obtained based on this controlled entanglement router. The results show that we can employ the UMZI as general entanglement router for practical quantum information application.

Qiang Zhou; Shuai Dong; Wei Zhang; Lixing You; Yuhao He; Weijun Zhang; Yidong Huang; Jiangde Peng

2014-07-16T23:59:59.000Z

383

Roaming dynamics in ion-molecule reactions: phase space reaction pathways and geometrical interpretation  

E-Print Network (OSTI)

A model Hamiltonian for the reaction CH$_4^+ \\rightarrow$ CH$_3^+$ + H, parametrized to exhibit either early or late inner transition states, is employed to investigate the dynamical characteristics of the roaming mechanism. Tight/loose transition states and conventional/roaming reaction pathways are identified in terms of time-invariant objects in phase space. These are dividing surfaces associated with normally hyperbolic invariant manifolds (NHIMs). For systems with two degrees of freedom NHIMS are unstable periodic orbits which, in conjunction with their stable and unstable manifolds, unambiguously define the (locally) non-recrossing dividing surfaces assumed in statistical theories of reaction rates. By constructing periodic orbit continuation/bifurcation diagrams for two values of the potential function parameter corresponding to late and early transition states, respectively, and using the total energy as another parameter, we dynamically assign different regions of phase space to reactants and products as well as to conventional and roaming reaction pathways. The classical dynamics of the system are investigated by uniformly sampling trajectory initial conditions on the dividing surfaces. Trajectories are classified into four different categories: direct reactive and non reactive trajectories,which lead to the formation of molecular and radical products respectively, and roaming reactive and non reactive orbiting trajectories, which represent alternative pathways to form molecular and radical products. By analysing gap time distributions at several energies we demonstrate that the phase space structure of the roaming region, which is strongly influenced by non-linear resonances between the two degrees of freedom, results in nonexponential (nonstatistical) decay.

F. A. L. Mauguičre; P. Collins; G. S. Ezra; S. C. Farantos; S. Wiggins

2014-01-31T23:59:59.000Z

384

Integrating Two Worlds: A Supportive Pathway for Native American Students |  

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

Integrating Two Worlds: A Supportive Pathway for Native American Integrating Two Worlds: A Supportive Pathway for Native American Students Integrating Two Worlds: A Supportive Pathway for Native American Students November 18, 2011 - 3:41pm Addthis Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Bill Valdez Bill Valdez Principal Deputy Director When the National Nuclear Security Administration (NNSA) looked for an institution to get a strong engineering base to recruit from, they turned to Northern Arizona University (NAU), the top recruiter of Native American engineering students in their area. Since 2010, NNSA has funded a 12-week summer internship program at Lawrence Livermore National Laboratory (LLNL)

385

Do Main Chain Hydrogen Bonds Create Dominant Electron Transfer Pathways?  

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

Main Chain Hydrogen Bonds Create Dominant Electron Transfer Pathways? An Main Chain Hydrogen Bonds Create Dominant Electron Transfer Pathways? An Investigation in Designed Proteins Yongjian Zheng, Martin A. Case, James F. Wishart, and George L. McLendon J. Phys. Chem. B, 107, 7288-7292 (2003). [Find paper at ACS Publications] Abstract: We have investigated the contribution of main chain hydrogen bond (H-bond) pathways to the tunneling matrix elements which control electron transfer (ET) rates across an alpha-helical protein matrix. The paradigm system for these investigations is a metal ion-assembled parallel three-helix bundle protein that contains a ruthenium(II) tris(bipyridyl) electron donor and a ruthenium(III) pentammine electron acceptor separated by a direct metal to metal distance of ca. 19 Ă…, requiring tunneling through 15 Ă… of

386

Integrating Two Worlds: a Supportive Pathway for Native American Students  

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

Integrating Two Worlds: a Supportive Pathway for Native American Integrating Two Worlds: a Supportive Pathway for Native American Students from High School to College to National Nuclear Security Agency Careers Integrating Two Worlds: a Supportive Pathway for Native American Students from High School to College to National Nuclear Security Agency Careers November 17, 2011 - 3:15pm Addthis Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Bill Valdez Bill Valdez Principal Deputy Director When the National Nuclear Security Administration (NNSA) looked for an institution to get a strong engineering base to recruit from, they turned straight to Northern Arizona University (NAU), the top recruiter of Native

387

Integrating Two Worlds: a Supportive Pathway for Native American Students  

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

Integrating Two Worlds: a Supportive Pathway for Native American Integrating Two Worlds: a Supportive Pathway for Native American Students from High School to College to National Nuclear Security Agency Careers Integrating Two Worlds: a Supportive Pathway for Native American Students from High School to College to National Nuclear Security Agency Careers November 17, 2011 - 3:15pm Addthis Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Native American student interns at LLNL meet with Navajo Tribal President Ben Shelly this summer. Bill Valdez Bill Valdez Principal Deputy Director When the National Nuclear Security Administration (NNSA) looked for an institution to get a strong engineering base to recruit from, they turned straight to Northern Arizona University (NAU), the top recruiter of Native

388

Low energy pathways for reproducible in vivo protein folding  

E-Print Network (OSTI)

Two proteins, one belonging to the mainly alpha class and the other belonging to the alpha/beta class, are selected to test a kinetic mechanism for protein folding. Targeted molecular dynamics is applied to generate folding pathways for those two proteins, starting from two well defined initial conformations: a fully extended and a alpha-helical conformation. The results show that for both proteins the alpha-helical initial conformation provides overall lower energy pathways to the native state. For the alpha/beta protein, 30 % (40%) of the pathways from an initial alpha-helix (fully extended) structure lead to unentangled native folds, a success rate that can be increased to 85 % by the introduction of a well-defined intermediate structure. These results open up a new direction in which to look for a solution to the protein folding problem, as detailed at the end.

Leonor Cruzeiro

2011-01-03T23:59:59.000Z

389

Homologous recombination and non-homologous end-joining repair pathways in bovine embryos with different developmental competence  

SciTech Connect

This study investigated the expression of genes controlling homologous recombination (HR), and non-homologous end-joining (NHEJ) DNA-repair pathways in bovine embryos of different developmental potential. It also evaluated whether bovine embryos can respond to DNA double-strand breaks (DSBs) induced with ultraviolet irradiation by regulating expression of genes involved in HR and NHEJ repair pathways. Embryos with high, intermediate or low developmental competence were selected based on the cleavage time after in vitro insemination and were removed from in vitro culture before (36 h), during (72 h) and after (96 h) the expected period of embryonic genome activation. All studied genes were expressed before, during and after the genome activation period regardless the developmental competence of the embryos. Higher mRNA expression of 53BP1 and RAD52 was found before genome activation in embryos with low developmental competence. Expression of 53BP1, RAD51 and KU70 was downregulated at 72 h and upregulated at 168 h post-insemination in response to DSBs induced by ultraviolet irradiation. In conclusion, important genes controlling HR and NHEJ DNA-repair pathways are expressed in bovine embryos, however genes participating in these pathways are only regulated after the period of embryo genome activation in response to ultraviolet-induced DSBs.

Henrique Barreta, Marcos [Universidade Federal de Santa Catarina, Campus Universitario de Curitibanos, Curitibanos, SC (Brazil) [Universidade Federal de Santa Catarina, Campus Universitario de Curitibanos, Curitibanos, SC (Brazil); Laboratorio de Biotecnologia e Reproducao Animal-BioRep, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Garziera Gasperin, Bernardo; Braga Rissi, Vitor; Cesaro, Matheus Pedrotti de [Laboratorio de Biotecnologia e Reproducao Animal-BioRep, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil)] [Laboratorio de Biotecnologia e Reproducao Animal-BioRep, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Ferreira, Rogerio [Centro de Educacao Superior do Oeste-Universidade do Estado de Santa Catarina, Chapeco, SC (Brazil)] [Centro de Educacao Superior do Oeste-Universidade do Estado de Santa Catarina, Chapeco, SC (Brazil); Oliveira, Joao Francisco de; Goncalves, Paulo Bayard Dias [Laboratorio de Biotecnologia e Reproducao Animal-BioRep, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil)] [Laboratorio de Biotecnologia e Reproducao Animal-BioRep, Universidade Federal de Santa Maria, Santa Maria, RS (Brazil); Bordignon, Vilceu, E-mail: vilceu.bordignon@mcgill.ca [Department of Animal Science, McGill University, Ste-Anne-De-Bellevue, QC (Canada)] [Department of Animal Science, McGill University, Ste-Anne-De-Bellevue, QC (Canada)

2012-10-01T23:59:59.000Z

390

Comparative study of methods used to estimate ionic diffusion coefficients using migration tests  

SciTech Connect

Ionic diffusion coefficients are estimated rapidly using electromigration tests. In this paper, electromigration tests are accurately simulated by numerically solving the Nernst-Planck (NP) equation (coupled with the electroneutrality condition (EN)) using the finite element method. Numerical simulations are validated against experimental data obtained elsewhere [E. Samson, J. Marchand, K.A. Snyder, Calculation of ionic diffusion coefficients on the basis of migration test results, Materials and Structures/Materiaux et Constructions 36 (257) (2003) 156-165., H. Friedmann, O. Amiri, A. Ait-Mokhtar, A direct method for determining chloride diffusion coefficient by using migration test, Cement and Concrete Research 34 (11) (2004) 1967-1973.]. It is shown that migration due to the non-linear electric potential completely overwhelms diffusion due to concentration gradients. The effects of different applied voltage differences and chloride source concentrations on estimations of chloride diffusion coefficients are explored. We show that the pore fluid within concrete and mortar specimens generally differs from the curing solution, lowering the apparent diffusion coefficient, primarily due to interactions of chloride ions with other ions in the pore fluid. We show that the variation of source chloride concentration strongly affects the estimation of diffusion coefficients in non-steady-state tests; however this effect vanishes under steady-state conditions. Most importantly, a comparison of diffusion coefficients obtained from sophisticated analyses (i.e., NP-EN) and a variety of commonly used simplifying methods to estimate chloride diffusion coefficients allows us to identify those methods and experimental conditions where both approaches deliver good estimates for chloride diffusion coefficients. Finally, we demonstrate why simultaneous use and monitoring of current density and fluxes are recommended for both the non-steady and steady-state migration tests.

Narsilio, G.A. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: narsilio@unimelb.edu.au; Li, R. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia); Institute of Geotechnical Engineering, Southeast University (SEU), Nanjing, Jiangsu (China)], E-mail: lirenmin@seu.edu.cn; Pivonka, P. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: ppivonka@unimelb.edu.au; Smith, D.W. [Department of Civil and Environmental Engineering, School of Engineering, University of Melbourne, Victoria 3010 (Australia)], E-mail: david.smith@unimelb.edu.au

2007-08-15T23:59:59.000Z

391

Summary Results for Brine Migration Modeling Performed by LANL LBNL and SNL for the UFD Program  

SciTech Connect

This report summarizes laboratory and field observations and numerical modeling related to coupled processes involving brine and vapor migration in geologic salt, focusing on recent developments and studies conducted at Sandia, Los Alamos, and Berkeley National Laboratories. Interest into the disposal of heat-generating waste in salt has led to interest into water distribution and migration in both run-of-mine crushed and intact geologic salt. Ideally a fully coupled thermal-hydraulic-mechanical-chemical simulation is performed using numerical models with validated constitutive models and parameters. When mechanical coupling is not available, mechanical effects are prescribed in hydraulic models as source, boundary, or initial conditions. This report presents material associated with developing appropriate initial conditions for a non-mechanical hydrologic simulation of brine migration in salt. Due to the strong coupling between the mechanical and hydrologic problems, the initial saturation will be low for the excavation disturbed zone surrounding the excavation. Although most of the material in this report is not new, the author hopes it is presented in a format making it useful to other salt researchers.

Kuhlman, Kristopher L.

2014-09-01T23:59:59.000Z

392

Constraints on Radial Migration in Spiral Galaxies I. Analytic Criterion for Capture at Corotation  

E-Print Network (OSTI)

Near the corotation resonance of a transient spiral arm, stellar orbital angular momenta may be changed without inducing significant kinematic heating, resulting in what has come to be known as radial migration. When radial migration is very efficient, a large fraction of disk stars experiences significant, permanent changes to their individual orbital angular momenta over the lifetime of the disk, having strong implications for the evolution of disk galaxies. The first step for a star in a spiral disk to migrate radially is to be captured in a "trapped" orbit, associated with the corotation resonance of the spiral pattern. An analytic criterion for determining whether or not a star is in a trapped orbit has previously been derived only for stars with zero random orbital energy in the presence of a spiral with fixed properties. In this first paper in a series, we derive an analytic criterion appropriate for a star that is on an orbit of finite random orbital energy. Our new criterion demonstrates that whether...

Daniel, Kathryne J

2014-01-01T23:59:59.000Z

393

Evaluation of radionuclide migration in the homogeneous system of a geological repository  

Science Journals Connector (OSTI)

The aim of this paper is to study radionuclide migration and release from a deep underground repository situated in a clay formation. An insight into the processes influencing the radionuclide transport in the near field and far field will be presented. For the calculation, a set of radionuclides has been chosen, considering the half-life, decay chains, capacity of the sorption, solubility limits and diffusion coefficients. The migration of radionuclides is dependent on transport properties of the particular nuclide. Due to the low hydraulic conductivity of the backfill material and clay geological formation, the transport in the repository occurs mainly by diffusion. The migration rate will be influenced by the water chemistry, solubility, retardation and diffusive properties of the nuclides, and the water flow rate in the clay. The release rates of radionuclides from the geosphere to the biosphere will be converted into the indicative dose rates using dose conversion factors for ingestion. The impact of the critical group is considered via consumption of meat, root vegetables and drinking water from wells.

S. Prvakova; J. Duran; V. Necas

2005-01-01T23:59:59.000Z

394

Mapping subsurface radionuclide migration and groundwater flow with organic tracers. [Shallow-land burial  

SciTech Connect

At Pacific Northwest Laboratory we have had the opportunity to study the subsurface migration of radionuclides at the Maxey Flats burial site. We constructed an experimental study area adjacent to one of the waste-filled trenches at the site. In this report we describe some preliminary results of organic research currently underway at Maxey Flats. This research is aimed at: (1) elucidating the role of organic species in the subsurface migration of radionuclides; and (2) testing the usefulness of artificial and in situ organic groundwater tracers for mapping radionuclide migration and groundwater flow. We also describe two analytical procedures developed for this research. First, as part of a survey study of organics in Maxey Flats groundwater we have developed a procedure for the isolation and characterization of trace levels of organics in radioactive groundwaters. Second, for a detailed chemical speciation study we developed a procedure based on steric exclusion chromatography for testing whether or not organics are chelated to radionuclides. 1 figure, 1 table.

Toste, A.P.; Kirby, L.J.; Pahl, T.R.; Myers, R.B.

1983-10-01T23:59:59.000Z

395

Application of pathways analyses for site performance prediction for the Gas Centrifuge Enrichment Plant and Oak Ridge Central Waste Disposal Facility  

SciTech Connect

The suitability of the Gas Centrifuge Enrichment Plant and the Oak Ridge Central Waste Disposal Facility for shallow-land burial of low-level radioactive waste is evaluated using pathways analyses. The analyses rely on conservative scenarios to describe the generation and migration of contamination and the potential human exposure to the waste. Conceptual and numerical models are developed using data from comprehensive laboratory and field investigations and are used to simulate the long-term transport of contamination to man. Conservatism is built into the analyses when assumptions concerning future events have to be made or when uncertainties concerning site or waste characteristics exist. Maximum potential doses to man are calculated and compared to the appropriate standards. The sites are found to provide adequate buffer to persons outside the DOE reservations. Conclusions concerning site capacity and site acceptability are drawn. In reaching these conclusions, some consideration is given to the uncertainties and conservatisms involved in the analyses. Analytical methods to quantitatively assess the probability of future events to occur and the sensitivity of the results to data uncertainty may prove useful in relaxing some of the conservatism built into the analyses. The applicability of such methods to pathways analyses is briefly discussed. 18 refs., 9 figs.

Pin, F.G.; Oblow, E.M.

1984-01-01T23:59:59.000Z

396

Excitation transfer pathways in excitonic aggregates revealed by the stochastic Schrödinger equation  

E-Print Network (OSTI)

We derive the stochastic Schr\\"odinger equation for the system wave vector and use it to describe the excitation energy transfer dynamics in molecular aggregates. We suggest a quantum-measurement based method of estimating the excitation transfer time. Adequacy of the proposed approach is demonstrated by performing calculations on a model system. The theory is then applied to study the excitation transfer dynamics in a photosynthetic pigment-protein Fenna-Matthews-Olson (FMO) aggregate using both the Debye spectral density and the spectral density obtained from earlier molecular dynamics simulations containing strong vibrational high-frequency modes. The obtained results show that the excitation transfer times in the FMO system are affected by the presence of the vibrational modes, however the transfer pathways remain the same.

Vytautas Abramavicius; Darius Abramavicius

2014-01-14T23:59:59.000Z

397

Excitation transfer pathways in excitonic aggregates revealed by the stochastic Schr\\"odinger equation  

E-Print Network (OSTI)

We derive the stochastic Schr\\"odinger equation for the system wave vector and use it to describe the excitation energy transfer dynamics in molecular aggregates. We suggest a quantum-measurement based method of estimating the excitation transfer time. Adequacy of the proposed approach is demonstrated by performing calculations on a model system. The theory is then applied to study the excitation transfer dynamics in a photosynthetic pigment-protein Fenna-Matthews-Olson (FMO) aggregate using both the Debye spectral density and the spectral density obtained from earlier molecular dynamics simulations containing strong vibrational high-frequency modes. The obtained results show that the excitation transfer times in the FMO system are affected by the presence of the vibrational modes, however the transfer pathways remain the same.

Abramavicius, Vytautas

2014-01-01T23:59:59.000Z

398

Metabolism and proliferation share common regulatory pathways in cancer  

E-Print Network (OSTI)

Metabolism and proliferation share common regulatory pathways in cancer cells. Vanessa Fritz, proliferation, and cancer inserm-00491405,version1-11Jun2010 Author manuscript, published in "Oncogene 2010;29(31):4369-77" DOI : 10.1038/onc.2010.182 #12;Metabolism, proliferation and cancer Fritz and Fajas 2 Abstract Cancer

Boyer, Edmond

399

Meningioma Transcript Profiles Reveal Deregulated Notch Signaling Pathway  

Science Journals Connector (OSTI)

...Notch Signaling Pathway Ileana C. Cuevas 1 Alison L. Slocum 1 Peter Jun 1 Joseph F. Costello...independent transcripts. We did pair-wise comparisons and Monte Carlo analysis between...transcripts were derived by performing pair-wise comparisons and counting the number of...

Ileana C. Cuevas; Alison L. Slocum; Peter Jun; Joseph F. Costello; Andrew W. Bollen; Gregory J. Riggins; Michael W. McDermott; and Anita Lal

2005-06-15T23:59:59.000Z

400

Hierarchical Protein Folding Pathways: A Computational Study of Protein Fragments  

E-Print Network (OSTI)

Hierarchical Protein Folding Pathways: A Computational Study of Protein Fragments Nurit Haspel,1 folding model. The model postulates that protein folding is a hierarchical top-down pro- cess. The basic words: protein folding; building blocks; pro- tein structure prediction; hierarchical folding; protein

Haspel, Nurit

Note: This page contains sample records for the topic "migration pathway timing" 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

Biogas Production through the Syntrophic Acetate-Oxidising Pathway  

E-Print Network (OSTI)

Biogas Production through the Syntrophic Acetate-Oxidising Pathway Characterisation and Detection Uppsala 2012 #12;Acta Universitatis agriculturae Sueciae 2012:45 #12;Biogas production through 1.1 Aims of the thesis 12 2 Biogas production 15 2.1 Biogas production in Europe 16 2.2 Substrate

402

Dynamic exploration and editing of KEGG pathway diagrams  

Science Journals Connector (OSTI)

......the German Ministry of Education and Research (BMBF...Lecture Notes in Computer Science, Vol. 3383, Springer...Lecture Notes in Computer Science, Vol. 3843, Springer...Metabolic Pathways Map (Poster) 1997, St Louis Sigma...Lecture Notes in Computer Science, Vol. 1731, Springer......

Christian Klukas; Falk Schreiber

2007-02-01T23:59:59.000Z

403

Deterministic modelling and stochastic simulation of biochemical pathways using MATLAB  

E-Print Network (OSTI)

Deterministic modelling and stochastic simulation of biochemical pathways using MATLAB M. Ullah, H environment MATLAB is widely used in the physical and engineering sciences. We describe a collection of MATLAB for stochastic simulation using advanced MATLAB coding (Release 14). The program was successfully applied

Rostock, Universität

404

Protein signaling via type III secretion pathways in phytopathogenic bacteria  

E-Print Network (OSTI)

-5274 Abbreviations HR hypersensitive response Pv pathovar NLS nuclear localization signals Introduction Plants secretion pathway has revealed new mechanisms by which phytopathogenic bacteria infect plants. The suggestion that bacterial gene products are `delivered to' and `perceived by' plants cells has fundamentally

Mudgettt, Mary Beth

405

Transportation Center Seminar... Envisioning Autonomous Vehicle Pathways through  

E-Print Network (OSTI)

Transportation Center Seminar... Envisioning Autonomous Vehicle Pathways through the Lens of Air Transportation Planning Megan S. Ryerson, Ph.D. Assistant Professor Department of City & Regional Planning:00 pm Refreshments available at 3:30 pm Location: Transportation Center, Chambers Hall Lower Level, 600

Bustamante, Fabián E.

406

Pathways to Sustainability and the Politics of Innovation  

E-Print Network (OSTI)

Pathways to Sustainability and the Politics of Innovation Tuesday, January 22, 2013 12:00 ­ 1:30 p, technology, and innovation. These are not only complex and uncertain role dynamics, but they also circulate these roles in diverse ways and promote particular goals and values. Melissa Leach directs the Social

Hall, Sharon J.

407

2002 Fusion Summer Study Subgroup E4 -Development Pathway Subgroup  

E-Print Network (OSTI)

2002 Fusion Summer Study Subgroup E4 - Development Pathway Subgroup Draft by: Farrokh Najmabadi A burning plasma experiment is a key step in developing fusion. The realization of fusion, however, requires and fusion power technologies, etc. An important discriminator among various embodiments of burning plasma

Najmabadi, Farrokh

408

2002 Fusion Summer Study Development Pathway Subgroup (E 4)  

E-Print Network (OSTI)

2002 Fusion Summer Study Development Pathway Subgroup (E 4) Final Report July 25, 2002 #12;6. Development Path Scenarios The development path to realize fusion as a practical energy source must include performance, steady-state operation; 4) Development of low-activation materials and fusion technologies

409

A new pathway in the generation of defective retrovirus DNA.  

Science Journals Connector (OSTI)

...pathway in the generation of defective retrovirus DNA. J C Olsen...suggest that in the formation of defective circular DNA, the U5 domain...II I I I I , I I Il I I 1. DEFECTIVE RETROVIRUS DNA 783 deletions...Nucleotide sequence analysis was car- ried out on the relevant...

J C Olsen; R Swanstrom

1985-12-01T23:59:59.000Z

410

MCP Submitted Targeting the Human Cancer Pathway Protein  

E-Print Network (OSTI)

MCP Submitted Targeting the Human Cancer Pathway Protein Interaction Network by Structural Genomics for targeting co-functioning proteins by structural genomics projects. 2 byonMay28,2008www of the human genome sequence (4-6), the use of automated sequencing technology, and the development

Gerstein, Mark

411

Roaming radical pathways for the decomposition of alkanes.  

SciTech Connect

CASPT2 calculations predict the existence of roaming radical pathways for the decomposition of propane, n-butane, isobutane and neopentane. The roaming radical paths lead to the formation of an alkane and an alkene instead of the expected radical products. The predicted barriers for the roaming radical paths lie {approx}1 kcal/mol below the corresponding radical asymptotes.

Harding, L. B.; Klippenstein, S. J. (Chemical Sciences and Engineering Division)

2010-01-01T23:59:59.000Z

412

Energy Pathways of Hepatomas H-35 and 7800  

Science Journals Connector (OSTI)

...possessing a tumor energy metabolism, and...Respiration of Tu mors. New York: Academic Press...Relationship of Energy Processes to Deoxyribo...Moiuus, H. P. Energy Pathways of Hepatoma...TheBiochemistryofCancer,2dad.New York: Academic Press...

Alan C. Aisenberg and Harold P. Morris

1963-05-01T23:59:59.000Z

413

Questioning Inevitability of Energy Pathways: Alternative Energy Scenarios for California  

E-Print Network (OSTI)

Questioning Inevitability of Energy Pathways: Alternative Energy Scenarios for California May 21.6.4 Alternative Scenario 3 ­ Patriotic Energy Independence Section 3: Developing the Scenario Model and Examining, 2002 by Rebecca Ghanadan rebeccag@socrates.berkeley.edu The Energy and Resources Group University

Kammen, Daniel M.

414

Alternative pathways to fusion energy (focus on Department of Energy  

E-Print Network (OSTI)

Alternative pathways to fusion energy (focus on Department of Energy Innovative Confinement for a restructured fusion energy science program [5] 1996 | FESAC: Opportunities in Alternative Confinement Concepts, suggests program for Innovative Concepts [1] 1995 | OTA TPX and the Alternates [2] 1995 | PCAST (given flat

415

Energy/National Nuclear Security Administration (NNSA) Career Pathways Program  

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

The Energy/National Nuclear Security Administration (NNSA) Career Pathways Program is an innovative employment program targeting students and recent college graduates. If you are seeking an entry-level federal job or a federal internship, then check out our various opportunities!

416

The Motivators that Contribute to the Migration of African American Educators from Suburban School Districts to Urban School Districts  

E-Print Network (OSTI)

The purpose of this qualitative study was to examine the perceived motivators contributing African American educators' decision to migrate from a suburban school district to an urban school district. The case study approach was used in an effort...

McGary, Ostrova Dewayne

2012-07-16T23:59:59.000Z

417

Comparison of an self-organizing migration algorithm with simulated annealing and differential evolution for automated waveform tuning  

E-Print Network (OSTI)

Comparison of an self-organizing migration algorithm with simulated annealing and differential algorithm, has been compared with simulated annealing (SA) and differential evolution (DE density and the electron energy distribution in plasma processes. RF plasmas are inherently non

Hopgood, Adrian

418

B to CSP Migration: Towards a Formal and Automated Model-Driven Engineering of Hardware/Software Co-design  

Science Journals Connector (OSTI)

This paper presents a migration approach from a class of hierarchical B models to CSP. The B models follow a so-called...polling pattern..., suitable for reactive systems, and are automatically translated into a ...

Marcel Vinicius Medeiros Oliveira…

2011-01-01T23:59:59.000Z

419

Long-term prediction of the migration of radionuclides from solid radwaste storage sites at the Siberian Chemical Works  

Science Journals Connector (OSTI)

The results of a calculation of the migration of radionuclides from a repository for solid radioactive wastes from the reactor plant of the Siberian Chemical Works, performed using a method recommended by IAEA...

R. B. Sharafutdinov; A. V. Talitskaya; Yu. V. Runova; V. I. Korzh…

2007-08-01T23:59:59.000Z

420

Ell3 stimulates proliferation, drug resistance, and cancer stem cell properties of breast cancer cells via a MEK/ERK-dependent signaling pathway  

SciTech Connect

Highlights: •Ell3 enhances proliferation and drug resistance of breast cancer cell lines. •Ell3 is related to the cancer stem cell characteristics of breast cancer cell lines. •Ell3 enhances oncogenicity of breast cancer through the ERK1/2 signaling pathway. -- Abstract: Ell3 is a RNA polymerase II transcription elongation factor that is enriched in testis. The C-terminal domain of Ell3 shows strong similarities to that of Ell (eleven?nineteen lysine-rich leukemia gene), which acts as a negative regulator of p53 and regulates cell proliferation and survival. Recent studies in our laboratory showed that Ell3 induces the differentiation of mouse embryonic stem cells by protecting differentiating cells from apoptosis via the promotion of p53 degradation. In this study, we evaluated the function of Ell3 in breast cancer cell lines. MCF-7 cell lines overexpressing Ell3 were used to examine cell proliferation and cancer stem cell properties. Ectopic expression of Ell3 in breast cancer cell lines induces proliferation and 5-FU resistance. In addition, Ell3 expression increases the cancer stem cell population, which is characterized by CD44 (+) or ALDH1 (+) cells. Mammosphere-forming potential and migration ability were also increased upon Ell3 expression in breast cancer cell lines. Through biochemical and molecular biological analyses, we showed that Ell3 regulates proliferation, cancer stem cell properties and drug resistance in breast cancer cell lines partly through the MEK?extracellular signal-regulated kinase signaling pathway. Murine xenograft experiments showed that Ell3 expression promotes tumorigenesis in vivo. These results suggest that Ell3 may play a critical role in promoting oncogenesis in breast cancer by regulating cell proliferation and cancer stem cell properties via the ERK1/2 signaling pathway.

Ahn, Hee-Jin [Department of Biomedical Science, College of Life Science, CHA University, Seoul (Korea, Republic of)] [Department of Biomedical Science, College of Life Science, CHA University, Seoul (Korea, Republic of); Kim, Gwangil [Department of Pathology, CHA Bundang Medical Center, CHA University, Seoul (Korea, Republic of)] [Department of Pathology, CHA Bundang Medical Center, CHA University, Seoul (Korea, Republic of); Park, Kyung-Soon, E-mail: kspark@cha.ac.kr [Department of Biomedical Science, College of Life Science, CHA University, Seoul (Korea, Republic of)] [Department of Biomedical Science, College of Life Science, CHA University, Seoul (Korea, Republic of)

2013-08-09T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Understanding Long-Term Solute Transport in Sedimentary Basins: Simulating Brine Migration in the Alberta Basin. Final Report  

SciTech Connect

Mass transport in deep sedimentary basins places important controls on ore formation, petroleum migration, CO2 sequestration, and geochemical reactions that affect petroleum reservoir quality, but large-scale transport in this type of setting remains poorly understood. This lack of knowledge is highlighted in the resource-rich Alberta Basin, where geochemical and hydrogeologic studies have suggested residence times ranging from hundreds of millions of years to less than 5 My, respectively. Here we developed new hydrogeologic models that were constrained by geochemical observations to reconcile these two very different estimates. The models account for variable-density fluid flow, heat transport, solute transport, sediment deposition and erosion, sediment compressibility, and dissolution of salt deposits, including Cl/Br systematics. Prior interpretations of Cl/Br ratios in the Alberta Basin concluded that the brines were derived from evaporatively-concentrated brines that were subsequently diluted by seawater and freshwater; models presented here show that halite dissolution must have contributed strongly as well, which implies significantly greater rates of mass transport. This result confirms that Cl/Br ratios are subject to significant non-uniqueness and thus do not provide good independent indicators of the origin of brines. Salinity and Cl/Br ratios provided valuable new constraints for basin-scale models, however. Sensitivity studies revealed that permeabilities obtained from core- and field-scale tests were appropriate for basin-scale models, despite the differences in scale between the tests and the models. Simulations of groundwater age show that the residence time of porefluids in much of the basin is less than 100 My. Groundwater age increases with depth and approaches 200 My in the deepest part of the basin, but brines are significantly younger than their host rocks throughout the basin.

Alicia M. Wilson

2009-11-30T23:59:59.000Z

422

Low Dose Radiation Research Program: Real-time Study of Signal Transduction  

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

Real-time Study of Signal Transduction Pathways Involving in Real-time Study of Signal Transduction Pathways Involving in Bystander Effects Using Single Nanoparticle Optics and Single Living Cell Imaging Authors: Prakash D. Nallathamby, X. Nancy Xu, Mohan Natarajan Institutions: Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia and Department of Radiation Oncology, The University of Texas Health Science Center, San Antonio, Texas The mechanisms of bystander effects remain largely unknown. Bystander responses are thought to depend on activation of cellular communication processes. Recent studies have speculated that several crucial signal transduction pathways could play a major role in bystander effects. These crucial signal transduction pathways are controlled by a coordinated

423

McKinsey & Company - Pathways to a Low Carbon Economy for Brazil | Open  

Open Energy Info (EERE)

McKinsey & Company - Pathways to a Low Carbon Economy for Brazil McKinsey & Company - Pathways to a Low Carbon Economy for Brazil Jump to: navigation, search Name Pathways to a Low Carbon Economy for Brazil Agency/Company /Organization McKinsey and Company Topics Implementation, Low emission development planning, Policies/deployment programs, Pathways analysis Resource Type Guide/manual Website http://www.mckinsey.com/en/Cli Country Brazil South America References Low Carbon Pathways [1] Overview Pathways low carbon economy brazil ashx.pdf Outcomes, Lessons Learned and Good Practice References ↑ "Low Carbon Pathways" Retrieved from "http://en.openei.org/w/index.php?title=McKinsey_%26_Company_-_Pathways_to_a_Low_Carbon_Economy_for_Brazil&oldid=384013" Category: Programs What links here Related changes

424

Aeolian sediment transport pathways and aerodynamics at troughs Mary C. Bourke1  

E-Print Network (OSTI)

Aeolian sediment transport pathways and aerodynamics at troughs on Mars Mary C. Bourke1 School pathways and aerodynamics at troughs on Mars, J. Geophys. Res., 109, E07005, doi:10.1029/2003JE002155. 1

Bourke, Mary C.

425

Bioenergy Technologies Office Conversion R&D Pathway: Syngas Upgrading to Hydrocarbon Fuels  

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

Syngas upgrading to hydrocarbon fuels is one of eight priority pathways chosen to convert biomass into hydrocarbon fuels by the Bioenergy Technologies Office. These pathways were down-selected from an initial list of 18.

426

Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae Hydrothermal Liquefaction  

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

Whole algae hydrothermal liquefaction is one of eight priority pathways chosen to convert biomass into hydrocarbon fuels by the Bioenergy Technologies Office. These pathways were down-selected from an initial list of 18.

427

E-Print Network 3.0 - alternative pathways precedes Sample Search...  

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

alternative pathways with many dif... structure formation Figure 2 Pathways of protein folding. In the framework model, precedence is given... 1936-122X080609-048920.00 Key...

428

Nuclear magnetic resonance studies of the regulation of the pentose phosphate pathway  

SciTech Connect

The goal of this work is to investigate the potential for and limitations of in vivo nuclear magnetic resonance (NMR) spectroscopy for quantitation of glucose flux through the pentose phosphate pathway (shunt). Interest in the shunt is motivated by the possibility that its activity may be greatly increased in cancer and in the pathological states of cardiac and cerebral ischemia. The ability to dynamically monitor flux through the pentose shunt can give new knowledge about metabolism in pathological states. {sup 13}C NMR spectroscopy was used to monitor shunt activity by determination of the ratios of ({sup 13}C-4) to ({sup 13}C-5)-glutamate, ({sup 13}C-3) to ({sup 13}C-2)-alanine or ({sup 13}C-3) to ({sup 13}C-2)-lactate produced when ({sup 13}C-2)-glucose is infused. These methods provide measures of the effect of oxidative stresses on shunt activity in systems ranging from cell free enzyme-substrate preparations to cell suspensions and whole animals. In anaerobic cell free preparations, the fraction of glucose flux through the shunt was monitored with a time resolution of 3 minutes. This work predicts the potential for in vivo human studies of pentose phosphate pathway activity based on the mathematical simulation of the {sup 13}C fractional enrichments of C4 and C5-glutamate as a function of shunt activity and on the signal-to- noise ratio acquired in {sup 13}C NMR human studies from the current literature.

Bolo, N.R.

1991-11-01T23:59:59.000Z

429

Nuclear magnetic resonance studies of the regulation of the pentose phosphate pathway  

SciTech Connect

The goal of this work is to investigate the potential for and limitations of in vivo nuclear magnetic resonance (NMR) spectroscopy for quantitation of glucose flux through the pentose phosphate pathway (shunt). Interest in the shunt is motivated by the possibility that its activity may be greatly increased in cancer and in the pathological states of cardiac and cerebral ischemia. The ability to dynamically monitor flux through the pentose shunt can give new knowledge about metabolism in pathological states. {sup 13}C NMR spectroscopy was used to monitor shunt activity by determination of the ratios of [{sup 13}C-4] to [{sup 13}C-5]-glutamate, [{sup 13}C-3] to [{sup 13}C-2]-alanine or [{sup 13}C-3] to [{sup 13}C-2]-lactate produced when [{sup 13}C-2]-glucose is infused. These methods provide measures of the effect of oxidative stresses on shunt activity in systems ranging from cell free enzyme-substrate preparations to cell suspensions and whole animals. In anaerobic cell free preparations, the fraction of glucose flux through the shunt was monitored with a time resolution of 3 minutes. This work predicts the potential for in vivo human studies of pentose phosphate pathway activity based on the mathematical simulation of the {sup 13}C fractional enrichments of C4 and C5-glutamate as a function of shunt activity and on the signal-to- noise ratio acquired in {sup 13}C NMR human studies from the current literature.

Bolo, N.R.

1991-11-01T23:59:59.000Z

430

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways  

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

Protein Bridges DNA Base and Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Wednesday, 28 October 2009 00:00 Alkyltransferase proteins (AGT) protect cells from the biological effects of DNA damage caused by the addition of alkyl groups (alkylation). Alkyltransferase-like proteins (ATLs) can do the same, but they lack the reactive cysteine residue that allows the alkyltransferase function, and the mechanism for cell protection has remained unknown. To address this mystery, a British-American team lead by researchers at the Scripps Research Institute recently applied a combination of x-ray structural, biochemical, and genetic studies to ATLs in the yeast Schizosaccharomyces pombe without and with damaged DNA. By showing how a process called non-enzymatic nucleotide flipping activates ATL-initiated DNA repair, their results may improve our understanding of genomic integrity and responses to DNA damage relevant to pathogens and cancer development.

431

Climate VISION: Private Sector Initiatives: Cement: Technology Pathways  

Office of Scientific and Technical Information (OSTI)

Technology Pathways Technology Pathways The DOE's Industries of the Future process helps entire industries articulate their long-term goals and publish them in a unified vision for the future. To achieve that vision, industry leaders jointly define detailed R&D agendas known as roadmaps. ITP relies on roadmap-defined priorities to target cost-shared solicitations and guide development of a balanced R&D portfolio that yields useful results in the near, mid, and long term. Industry Vision & Roadmaps Two documents address the cement industry's challenges and priorities: Vision 2030, which outlines broad goals for the future, and Roadmap 2030, which established the industry's R&D priorities. ITP and the Strategic Development Council, a council of the American Concrete Institute's

432

Climate VISION: Private Sector Initiatives: Aluminum: Technology Pathways  

Office of Scientific and Technical Information (OSTI)

Technology Pathways Technology Pathways U.S. aluminum producers recognize that reducing greenhouse gas emissions and improving energy efficiency offers a competitive edge in world markets. In 1996, the U.S. industry entered into partnership with DOE's Industrial Technologies Program (ITP) to work toward shared goals. Since then, the Aluminum Industry of the Future partnership has been feeding the technology pipeline so that U.S. producers will have the technologies they need to achieve their long-term economic, energy and environmental goals. The Industries of the Future process helps entire industries articulate their long-term goals and publish them in a unified vision for the future. To achieve that vision, industry leaders jointly define detailed R&D agendas known as roadmaps. ITP relies on roadmap-defined priorities to

433

Technoeconomic Boundary Analysis of Biological Pathways to Hydrogen Production  

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

60-46674 60-46674 September 2009 Technoeconomic Boundary Analysis of Biological Pathways to Hydrogen Production March 27, 2008 - August 31, 2009 B.D. James, G.N. Baum, J. Perez, and K.N. Baum Directed Technologies, Inc. Arlington, Virginia National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Subcontract Report NREL/SR-560-46674 September 2009 Technoeconomic Boundary Analysis of Biological Pathways to Hydrogen Production March 27, 2008 - August 31, 2009 B.D. James, G.N. Baum, J. Perez, and K.N. Baum

434

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways  

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

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Alkyltransferase proteins (AGT) protect cells from the biological effects of DNA damage caused by the addition of alkyl groups (alkylation). Alkyltransferase-like proteins (ATLs) can do the same, but they lack the reactive cysteine residue that allows the alkyltransferase function, and the mechanism for cell protection has remained unknown. To address this mystery, a British-American team lead by researchers at the Scripps Research Institute recently applied a combination of x-ray structural, biochemical, and genetic studies to ATLs in the yeast Schizosaccharomyces pombe without and with damaged DNA. By showing how a process called non-enzymatic nucleotide flipping activates ATL-initiated DNA repair, their results may improve our understanding of genomic integrity and responses to DNA damage relevant to pathogens and cancer development.

435

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways  

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

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Alkyltransferase proteins (AGT) protect cells from the biological effects of DNA damage caused by the addition of alkyl groups (alkylation). Alkyltransferase-like proteins (ATLs) can do the same, but they lack the reactive cysteine residue that allows the alkyltransferase function, and the mechanism for cell protection has remained unknown. To address this mystery, a British-American team lead by researchers at the Scripps Research Institute recently applied a combination of x-ray structural, biochemical, and genetic studies to ATLs in the yeast Schizosaccharomyces pombe without and with damaged DNA. By showing how a process called non-enzymatic nucleotide flipping activates ATL-initiated DNA repair, their results may improve our understanding of genomic integrity and responses to DNA damage relevant to pathogens and cancer development.

436

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways  

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

Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Protein Bridges DNA Base and Nucleotide Excision Repair Pathways Print Alkyltransferase proteins (AGT) protect cells from the biological effects of DNA damage caused by the addition of alkyl groups (alkylation). Alkyltransferase-like proteins (ATLs) can do the same, but they lack the reactive cysteine residue that allows the alkyltransferase function, and the mechanism for cell protection has remained unknown. To address this mystery, a British-American team lead by researchers at the Scripps Research Institute recently applied a combination of x-ray structural, biochemical, and genetic studies to ATLs in the yeast Schizosaccharomyces pombe without and with damaged DNA. By showing how a process called non-enzymatic nucleotide flipping activates ATL-initiated DNA repair, their results may improve our understanding of genomic integrity and responses to DNA damage relevant to pathogens and cancer development.

437

Efficient Traversal of Beta-Sheet Protein Folding Pathways Using Ensemble Models  

E-Print Network (OSTI)

Efficient Traversal of Beta-Sheet Protein Folding Pathways Using Ensemble Models SOLOMON SHENKER,1 introduce a complete methodology to

Gifford, David K.

438

Managing Complex Photophysical Pathways for Solar Energy Conversion  

Science Journals Connector (OSTI)

Managing Complex Photophysical Pathways for Solar Energy Conversion ... Zhu provides us with a refreshing discussion of the advantages and limitations of models presently employed to depict the interconversion of excitons and charge carriers and proposes a new energy level diagram for this purpose based exclusively on single-particle energies of ground and optically excited states. ... For example, in photosynthesis, antenna complexes capture sunlight and direct the energy to reaction centers that then carry out the assocd. ...

Ryan D. Pensack; Gregory D. Scholes

2014-07-03T23:59:59.000Z

439

Signalling pathway in appressorium formation in Magnaporthe grisea  

E-Print Network (OSTI)

this project. I thank all the friends from Plant Pathology Department, especially Dr Ebbole?s lab and Angelina Biscati, for their help during my studies. I thank Plant Pathology and Microbiology Department for the opportunity. I thank Texas A&M University... hydrophobic aliphatic compounds (Kolattukudy and Roger 1995), Gilbert et al. (1996), investigating the signal responsible for activating the appressorium formation pathway in M. grisea, tested the effects of specific cutin monomers, lipids compounds...

Filippi, Marta Cristina

2004-11-15T23:59:59.000Z

440

Development of an Ingestion Pathway Model for AXAIRQ  

SciTech Connect

AXAIRQ is a dose mode code used for prospective accident assessment at the Savannah River Site and is primarily used to show regulatory compliance. For completeness of pathway analysis, an ingestion model, AXINGST, has been developed for use with, and incorporation in, AXAIRQ. Currently available ingestion models were referenced as a basis for AXINGST. AXINGST calculates a conservative ingestion dose following an atmospheric release of radionuclides and includes site specific variables where applicable.

Simpkins, A.A.

1999-01-13T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Precision Timed Machines  

E-Print Network (OSTI)

1.4 Precision Timed Machines . . . . .Precision Timed Machine 2.1precision timed (PRET) machine. pages 264–265, June 2007. [

Liu, Isaac Suyu

2012-01-01T23:59:59.000Z

442

Recombinant disintegrin domain of ADAM15 inhibits the proliferation and migration of Bel-7402 cells  

SciTech Connect

Highlights: •rhddADAM15 inhibited the proliferation and migration of Bel-7402 cells. •rhddADAM15 inhibited growth and metastasis of Bel-7402 cells in zebrafish xenograft. •rhddADAM15 induced apoptosis in Bel-7402 cells and somatic cells of zebrafish. •Cell-cycle in Bel-7402 cells showed a partial G{sub 2}/S arrest. •Activity of caspases 8, 9 and 3 was increased in rhddADAM15-treated Bel-7402 cells. -- Abstract: ADAM15 (A Disintegrin And Metalloproteinase 15), a transmembrane protein containing seven domains, interacts with some integrins via its disintegrin domain and overexpresses in many solid tumors. In this study, the effect of the recombinant human disintegrin domain (rhddADAM15) on the proliferation and migration of Bel-7402 cells was evaluated in vitro and in vivo in zebrafish xenografts. rhddADAM15 (4 ?M) severely inhibited the proliferation and migration of Bel-7402 cells, inducing a partial G{sub 2}/S arrest and morphological nucleus changes of apoptosis. Moreover, the activity of caspases 8, 9 and 3 in Bel-7402 cells was increased. In addition, the zebrafish was used as a model for apoptosis-induction and tumor-xenograft. rhddADAM15 (1 pM) inhibited the growth and metastasis of Bel-7402 cell xenografts in zebrafish and a lower concentration (0.1 pM) induced severe apoptosis in the somatic cells of zebrafish. In conclusion, our data identified rhddADAM15 as a potent inhibitor of tumor growth and metastasis, making it a promising tool for use in anticancer treatment.

Hou, Y. [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China)] [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China); Chu, M. [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Medicine, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China)] [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Medicine, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China); Du, F.F.; Lei, J.Y.; Chen, Y.; Zhu, R.Y.; Gong, X.H.; Ma, X. [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China)] [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China); Jin, J., E-mail: jinjian31@126.com [Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Rd., Wuxi, Jiangsu 214122 (China)

2013-06-14T23:59:59.000Z

443

No-migration determination. Annual report, September 1, 1993--August 31, 1994  

SciTech Connect

This report fulfills the annual reporting requirement as specified in the Conditional No-Migration Determination (NMD) for the U.S. Department of Energy (DOE) Waste Isolation Pilot Plant (WIPP), published in the Federal Register on November 14, 1990 (EPA, 1990a). This report covers the project activities, programs, and data obtained during the period September 1, 1993, through August 31, 1994, to support compliance with the NMD`. In the NMD, the U.S. Environmental Protection Agency (EPA) concluded that the DOE had demonstrated, to a reasonable degree of certainty, that hazardous constituents will not migrate from the WIPP disposal unit during the test phase of the project, and that the DOE had otherwise met the requirements of 40 CFR Part 268.6, Petitions to Allow Land Disposal of a Waste Prohibited Under Subpart C of Part 268 (EPA, 1986a), for the WIPP facility. By granting the NMD, the EPA has allowed the DOE to temporarily manage defense-generated transuranic (TRU) mixed wastes, some of which are prohibited from land disposal by Title 40 CFR Part 268, Land Disposal Restrictions (EPA, 1986a), at the WIPP facility for the purposes of testing and experimentation for a period not to exceed 10 years. In granting the NMD, the EPA imposed several conditions on the management of the experimental waste used during the WIPP test phase. One of these conditions is that the DOE submit annual reports to the EPA to demonstrate the WIPP`s compliance with the requirements of the NMD. In the proposed No-Migration Variance (EPA, 1990b) and the final NMD, the EPA defined the content and parameters that must be reported on an annual basis. These reporting requirements are summarized and are cross-referenced with the sections of the report that satisfy the respective requirement.

Not Available

1994-11-01T23:59:59.000Z

444

Using Bit-Vector Decision Procedures for Analysis of Protein Folding Pathways  

E-Print Network (OSTI)

Using Bit-Vector Decision Procedures for Analysis of Protein Folding Pathways Christopher James-vector decision procedures for the analysis of protein folding pathways. We argue that the protein fold- ing by the different nature of the protein folding problem, we present a translation of the protein folding pathways

Langmead, Christopher James

445

Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways  

E-Print Network (OSTI)

Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways Ali induce dominant pathway mechanisms in protein folding. Citation: Mohazab AR, Plotkin SS (2013) Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways. PLoS ONE 8(1): e53642

Plotkin, Steven S.

446

Canada Geese at the Hanford Site – Trends in Reproductive Success, Migration Patterns, and Contaminant Concentrations  

SciTech Connect

Pacific Northwest National Laboratory (PNNL) has conducted several studies for the U.S. Department of Energy (DOE) to evaluate the status and condition of Canada geese on the Hanford Reach of the Columbia River. This report summarizes results of studies of Canada geese (Branta canadensis moffitti) at the Hanford Site dating back to the 1950s. Results include information on the nesting (reproductive) success of Canada geese using the Hanford Reach, review of the local and regional migration of this species using data from bird banding studies, and summary data describing monitoring and investigations of the accumulation of Hanford-derived and environmental contaminants by resident goose populations.

Simmons, Mary Ann; Poston, Ted M.; Tiller, Brett L.; Stegen, Amanda; Hand, Kristine D.; Brandenberger, Jill M.

2010-05-25T23:59:59.000Z

447

Modelling and Numerical Simulation of Gas Migration in a Nuclear Waste Repository  

E-Print Network (OSTI)

We present a compositional compressible two-phase, liquid and gas, flow model for numerical simulations of hydrogen migration in deep geological radioactive waste repository. This model includes capillary effects and the gas diffusivity. The choice of the main variables in this model, Total or Dissolved Hydrogen Mass Concentration and Liquid Pressure, leads to a unique and consistent formulation of the gas phase appearance and disappearance. After introducing this model, we show computational evidences of its adequacy to simulate gas phase appearance and disappearance in different situations typical of underground radioactive waste repository.

Bourgeat, Alain; Smai, Farid

2010-01-01T23:59:59.000Z

448

Hippocampal ``Time Cells'': Time versus Path Integration  

E-Print Network (OSTI)

Neuron Article Hippocampal ``Time Cells'': Time versus Path Integration Benjamin J. Kraus,1 function of hippocampal networks (Etienne and Jeffery, 2004; McNaughton et al., 1991, 1996, 2006; O

Hasselmo, Michael

449

Time in quantum mechanics  

E-Print Network (OSTI)

OF CONTENTS I. INTRODUCTION II. HISTORICAL DEVELOPMENT A. Classical Mechanics B. Quantum Theory . C. The Problem 3 4 6 III. TIME ATOMS AND DISCRETE TIME A. The Earliest Applications of Atomistic and Discrete Time . . . . . B. The Radiating Electron... . C. Quantum Field Theory 8 10 l2 IV. TIME OPERATOR FORMULATIONS 16 A. Advocates Against a Time Operator . B. The Possibility of a Time Operator C, Advocates in Favor of a Time Operator D. A Restricted Time Delay Operator: Scattering Theory...

Chapin, Kimberly R.

2012-06-07T23:59:59.000Z

450

Roaming dynamics in ion-molecule reactions: phase space reaction pathways and geometrical interpretation  

E-Print Network (OSTI)

A model Hamiltonian for the reaction CH$_4^+ \\rightarrow$ CH$_3^+$ + H, parametrized to exhibit either early or late inner transition states, is employed to investigate the dynamical characteristics of the roaming mechanism. Tight/loose transition states and conventional/roaming reaction pathways are identified in terms of time-invariant objects in phase space. These are dividing surfaces associated with normally hyperbolic invariant manifolds (NHIMs). For systems with two degrees of freedom NHIMS are unstable periodic orbits which, in conjunction with their stable and unstable manifolds, unambiguously define the (locally) non-recrossing dividing surfaces assumed in statistical theories of reaction rates. By constructing periodic orbit continuation/bifurcation diagrams for two values of the potential function parameter corresponding to late and early transition states, respectively, and using the total energy as another parameter, we dynamically assign different regions of phase space to reactants and product...

Mauguičre, F A L; Ezra, G S; Farantos, S C; Wiggins, S

2014-01-01T23:59:59.000Z

451

PATHWAY: a simulation model of radionuclide-transport through agricultural food chains  

SciTech Connect

PATHWAY simulates the transport of radionuclides from fallout through an agricultural ecosystem. The agro-ecosystem is subdivided into several land management units, each of which is used either for grazing animals, for growing hay, or for growing food crops. The model simulates the transport of radionuclides by both discrete events and continuous, time-dependent processes. The discrete events include tillage of soil, harvest and storage of crops,and deposition of fallout. The continuous processes include the transport of radionuclides due to resuspension, weathering, rain splash, percolation, leaching, adsorption and desorption of radionuclides in the soil, root uptake, foliar absorption, growth and senescence of vegetation, and the ingestion assimilation, and excretion of radionuclides by animals. Preliminary validation studies indicate that the model dynamics and simulated values of radionuclide concentrations in several agricultural products agree well with measured values when the model is driven with site specific data on deposition from world-wide fallout.

Kirchner, T.B.; Whicker, F.W.; Otis, M.D.

1982-01-01T23:59:59.000Z

452

The Effect of Annealing at 1500 C on Migration and Release of Ion Implanted Silver in CVD Silicon Carbide  

SciTech Connect

The transport of silver in CVD {beta}-SiC has been studied using ion implantation. Silver ions were implanted in {beta}-SiC using the ATLAS accelerator facility at the Argonne National Laboratory. Ion beams with energies of 93 and 161 MeV were used to achieve deposition with peak concentrations at depths of approximately 9 and 13 {micro}m, respectively. As-implanted samples were then annealed at 1500 C for 210 or 480 hours. XPS, SEM, TEM, STEM, and optical methods were used to analyze the material before and after annealing. Silver concentration profiles were determined using XPS before and after annealing. STEM and SEM equipped with quantitative chemical analysis capability were used to more fully characterize the location and morphology of the silver before and after annealing. The results show that, within the uncertainty of measurement techniques, there is no silver migration, via either inter- or intragrannular paths, for the times and temperature studied. Additionally, the silver was observed to phase separate within the SiC after annealing. The irradiation damage from the implantation process resulted in a three-layer morphology in the as-implanted condition: (1) a layer of unaltered SiC, followed by (2) a layer of crystallized SiC, followed by (3) an amorphized layer which contained essentially all of the implanted silver. After annealing the layer structure changed. Layer 1 was unaltered. The grains in layer 2 recrystallized to form an epitaxial (columnar) layer. Layer 3 recrystallized to form a fine grain equiaxed layer. The results of this work do not support the long held assumption that silver release from CVD SiC, used for gas-reactor coated particle fuel, is dominated by grain boundary diffusion.

HJ MacLean; RG Ballinger; LE Kolaya; SA Simonson; N Lewis; M Hanson

2004-10-07T23:59:59.000Z

453

A Qualitative Exploration of the Effect of Age at Migration on the Acculturative Processes of Filipino Immigrants: Implications for Public Health Studies  

E-Print Network (OSTI)

Health Implications ..that includes public health implications of this research,this topic and the health implications of migrating at later

Molina, Lourdes Cricel

2012-01-01T23:59:59.000Z

454

Mineralogical aspects of fluid migration in the Salt Block II experiment  

SciTech Connect

A block of evaporite rock containing the mineral assemblage halite (88%) - polyhalite (8%) - sylvite (4%) was machined into a cylinder one meter in diameter and one meter high, and was fitted with an axial heater, thermocouples and an off-gas collection system. After about 100 days of heating, identification of mineral efflorescences at the heater hole (carnallite and bischofite) showed that a significant portion of the 111 grams of water recovered (out of around 8500 grams available in the rock) migrated as a liquid, not as a vapor. A microscopic examination of rock slices from within 15 cm of the heater hole (where the temperature was 100 to 200/sup 0/C, and the gradient was 3 to 15/sup 0/C/cm) revealed that: (1) fluid inclusions had migrated, but rarely across grain boundaries; (2) fluid inclusions had not been mobilized at distances greater than about 15 cm from the heater hole; and (3) intergranular liquid had been conspicuously mobilized within 15 cm of the heater hole.

Lambert, S.J.

1980-05-01T23:59:59.000Z

455

Laboratory and field studies related to the Hydrology/Radionuclide Migration Project  

SciTech Connect

This annual report describes research conducted in FY 1990 by Los Alamos National Laboratory for the Hydrology/Radionuclide Migration Project. This multi-agency project measures the underground movement of radionuclides related to nuclear testing at the Nevada Test Site. This project continues the long-term experiment at the site of the Cambric nuclear test. Water pumped from a well adjacent to the explosion cavity continues to show decreasing amounts of tritium and Krypton 85 but no Cesium 139. Analyses of drillback debris shows a distinction between refractory and volatile materials in respect to both their location in the test cavity and their leachability with groundwater. We surveyed materials used during nuclear testing to evaluate any post-test hazard; we concluded that most such materials pose a minimal hazard. The Los Alamos drilling program provided an opportunity for us to sample a collapsed zone above the cavity of a test, which was fired 2 years ago. We continue our research in colloid characterization and in detection of low levels of Technetium 99 in Nevada Test Site water. During FY 1990, we drilled a new hole in the Yucca Flat area to study radionuclide migration. This report also describes Los Alamos management and planning activities in support of this project. 20 refs., 2 figs., 14 tabs.

Thompson, J.L. (comp.)

1991-05-01T23:59:59.000Z

456

Migrating the facility profile information management system into the world wide web  

SciTech Connect

The Department of Energy - Office of Special Projects and Argonne National Laboratory (ANL), along with the Department of Energy - office of Scientific and Technical Information have previously designed and implemented the Environment, Safety and Health Facility Profile Information Management System (FPIMS) to facilitate greater efficiency in searching, analyzing and disseminating information found within environment, safety and health oversight documents. This information retrieval based system serves as a central repository for full-text electronic oversight documents, as well as a management planning and decision making tool that can assist in trend and root cause analyses. Continuous improvement of environment, safety and health programs are currently aided through this personal computer-based system by providing a means for the open communication of lessons learned across the department. Overall benefits have included reductions in costs and improvements in past information management capabilities. Access to the FPIMS has been possible historically through a headquarters-based local area network equipped with modems. Continued demand for greater accessibility of the system by remote DOE field offices and sites, in conjunction with the Secretary of Energy` s call for greater public accessibility to Department of Energy (DOE) information resources, has been the impetus to expand access through the use of Internet technologies. Therefore, the following paper will discuss reasons for migrating the FPIMS system into the World Wide Web (Web), various lessons learned from the FPIMS migration effort, as well as future plans for enhancing the Web-based FPIMS.

Kero, R.E.; Swietlik, C.E.

1994-09-01T23:59:59.000Z

457

Modeling Coupled THMC Processes and Brine Migration in Salt at High Temperatures  

SciTech Connect

In this report, we present FY2014 progress by Lawrence Berkeley National Laboratory (LBNL) related to modeling of coupled thermal-hydrological-mechanical-chemical (THMC) processes in salt and their effect on brine migration at high temperatures. LBNL’s work on the modeling of coupled THMC processes in salt was initiated in FY2012, focusing on exploring and demonstrating the capabilities of an existing LBNL modeling tool (TOUGH-FLAC) for simulating temperature-driven coupled flow and geomechanical processes in salt. This work includes development related to, and implementation of, essential capabilities, as well as testing the model against relevant information and published experimental data related to the fate and transport of water. we provide more details on the FY2014 work, first presenting updated tools and improvements made to the TOUGH-FLAC simulator, and the use of this updated tool in a new model simulation of long-term THM behavior within a generic repository in a salt formation. This is followed by the description of current benchmarking and validations efforts, including the TSDE experiment. We then present the current status in the development of constitutive relationships and the dual-continuum model for brine migration. We conclude with an outlook for FY2015, which will be much focused on model validation against field experiments and on the use of the model for the design studies related to a proposed heater experiment.

Rutqvist, Jonny; Blanco Martin, Laura; Mukhopadhyay, Sumit; Houseworth, Jim; Birkholzer, Jens

2014-08-14T23:59:59.000Z

458

Pathways to a Low Carbon Economy: The Business Response to Climate Change |  

Open Energy Info (EERE)

Pathways to a Low Carbon Economy: The Business Response to Climate Change Pathways to a Low Carbon Economy: The Business Response to Climate Change Jump to: navigation, search Tool Summary Name: Pathways to a Low Carbon Economy: The Business Response to Climate Change Agency/Company /Organization: Centre for Low Carbon Futures Sector: Energy, Climate Topics: Finance, Low emission development planning, Market analysis, Policies/deployment programs, Pathways analysis Resource Type: Publications Website: www.lowcarbonfutures.org/assets/media/lcf_pathways_report_a4.pdf.pdf Cost: Free Pathways to a Low Carbon Economy: The Business Response to Climate Change Screenshot References: Pathways to a Low Carbon Economy: The Business Response to Climate Change[1] "Based on a nationwide survey of over 400 of the larger and more active and

459

Three-dimensional coupled ground water flow, thermal transport and/or migration of nuclides analysis by boundary element method  

SciTech Connect

In the safety analyses of radioactive waste disposal, it is important and indispensable to analyze coupled problems of ground water flow, thermal transport and/or migration of nuclides. The three-dimensional coupled problems is solved by boundary element method in this paper. The results of this method are compared with those experiments of JAERI and STRIPA SWEDEN on the thermal problem, and with those analyses of analytical and FEM results on the migration problem. In this formulation, natural convection is considered by Boussinesq approximation. An example of coupled ground water flow and migration of nuclides with decay chain U{sup 234} {yields} Th{sup 230} {yields} Ra{sup 226} is also tried.

Kawamura, Ryuji [Information and Mathematical Science Lab., Inc., Kanagawa (Japan)

1994-12-31T23:59:59.000Z

460

Modeling Cu Migration in CdTe Solar Cells Under Device-Processing and Long-Term Stability Conditions: Preprint  

SciTech Connect

An impurity migration model for systems with material interfaces is applied to Cu migration in CdTe solar cells. In the model, diffusion fluxes are calculated from the Cu chemical potential gradient. Inputs to the model include Cu diffusivities, solubilities, and segregation enthalpies in CdTe, CdS and contact materials. The model yields transient and equilibrium Cu distributions in CdTe devices during device processing and under field-deployed conditions. Preliminary results for Cu migration in CdTe photovoltaic devices using available diffusivity and solubility data from the literature show that Cu segregates in the CdS, a phenomenon that is commonly observed in devices after back-contact processing and/or stress conditions.

Teeter, G.; Asher, S.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" 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

Migrating data from TcSE to DOORS : an evaluation of the T-Plan Integrator software application.  

SciTech Connect

This report describes our evaluation of the T-Plan Integrator software application as it was used to transfer a real data set from the Teamcenter for Systems Engineering (TcSE) software application to the DOORS software application. The T-Plan Integrator was evaluated to determine if it would meet the needs of Sandia National Laboratories to migrate our existing data sets from TcSE to DOORS. This report presents the struggles of migrating data and focuses on how the Integrator can be used to map a data set and its data architecture from TcSE to DOORS. Finally, this report describes how the bulk of the migration can take place using the Integrator; however, about 20-30% of the data would need to be transferred from TcSE to DOORS manually. This report does not evaluate the transfer of data from DOORS to TcSE.

Post, Debra S. (Sandia National Laboratories, Livermore, CA); Manzanares, David A.; Taylor, Jeffrey L.

2011-02-01T23:59:59.000Z

462

Modeling Cu Migration in CdTe Solar Cells Under Device-Processing and Long-Term Stability Conditions (Poster)  

SciTech Connect

An impurity migration model for systems with material interfaces is applied to Cu migration in CdTe solar cells. In the model, diffusion fluxes are calculated from the Cu chemical potential gradient. Inputs to the model include Cu diffusivities, solubilities, and segregation enthalpies in CdTe, CdS and contact materials. The model yields transient and equilibrium Cu distributions in CdTe devices during device processing and under field-deployed conditions. Preliminary results for Cu migration in CdTe PV devices using available diffusivity and solubility data from the literature show that Cu segregates in the CdS, a phenomenon that is commonly observed in devices after back-contact processing and/or stress conditions.

Teeter, G.; Asher, S.

2008-05-01T23:59:59.000Z

463

The effect of stratigraphic dip on brine inflow and gas migration at the Waste Isolation Pilot Plant  

SciTech Connect

The natural dip of the Salado Formation at the Waste Isolation Pilot Plant (WIPP), although regionally only about 111, has the potential to affect brine inflow and gas-migration distances due to buoyancy forces. Current models, including those in WIPP Performance Assessment calculations, assume a perfectly horizontal repository and stratigraphy. With the addition of buoyancy forces due to the dip, brine and gas flow patterns can be affected. Brine inflow may increase due to countercurrent flow, and gas may preferentially migrate up dip. This scoping study has used analytical and numerical modeling to evaluate the impact of the dip on brine inflow and gas-migration distances at the WIPP in one, two, and three dimensions. Sensitivities to interbed permeabilities, two-phase curves, gas-generation rates, and interbed fracturing were studied.

Webb, S.W. [Sandia National Labs., Albuquerque, NM (United States)] [Sandia National Labs., Albuquerque, NM (United States); Larson, K.W. [INTERA, Inc., Albuquerque, NM (United States)] [INTERA, Inc., Albuquerque, NM (United States)

1996-02-01T23:59:59.000Z

464

Corepressors of the pyrimidine biosynthetic pathway in Salmonella typhimurium  

E-Print Network (OSTI)

COREPRESSORS OF THE PYRIHIDIHE BIOSYETHFTIC PATHWAY IH SP&h5017Z?E8 2"IPFiZYURJU)f A Thesis Jimmy Calvin Williams Approved as to style and content by: ( J f. !O . ~, ~. v. ~ (Chairman of Coaunittee) / (Hember) (Head of Department) / ( H... and motivation. TABLE OF CONTENTS PBE?'. ABSTRACT ACKNOF?LEDGE!ENTS. I. IST OF TABL?. ;S LIST OF FICURFS. LIST 01' ABBREVIATlONS. INTRO??UCTIOiV PRESi'!N'I STAT'US OF THE g)JESTION k?ATERIALS ANil ?z)}"I HCrl?S. VI V11 Ix ST?Ur?NS ~ FE)!DIA. CRO...

Williams, Jimmy Calvin

1971-01-01T23:59:59.000Z

465

Chemical species of migrating radionuclides at a shallow land low-level radioactive-waste burial site  

SciTech Connect

A research program at the Maxey Flats, Kentucky (U.S.A.) waste disposal site has been undertaken to define the chemical species contributing to the migration or retention of radionuclides contained in waste buried at that site. An experimental trench and inert atmosphere sampling wells were installed to sample water for determination of the chemical species of migrating radionuclides. The organic ligands are studied by gas chromatography, steric exclusion chromatography and mass spectrometry; and the data correlated with specific radionuclide counting data to determine precise chemical species. Preliminary data are reported in the text.

Kirby, L.J.; Toste, A.P.; Wilkerson, C.L.

1981-01-01T23:59:59.000Z

466

Determination of Swimming Speeds and Energetic Demands of Upriver Migrating Fall Chinook Salmon (Oncorhynchus Tshawytscha) in the Klickitat River, Washington.  

SciTech Connect

This report describes a study conducted by Pacific Northwest National Laboratory for the Bonneville Power Administration's Columbia Basin Fish and Wildlife Program during the fall of 2001. The objective was to study the migration and energy use of adult fall chinook salmon (Oncorhynchus tshawytscha) traveling up the Klickitat River to spawn. The salmon were tagged with either surgically implanted electromyogram (EMG) transmitters or gastrically implanted coded transmitters and were monitored with mobile and stationary receivers. Swim speed and aerobic and anaerobic energy use were determined for the fish as they attempted passage of three waterfalls on the lower Klickitat River and as they traversed free-flowing stretches between, below, and above the falls. Of the 35 EMG-tagged fish released near the mouth of the Klickitat River, 40% passed the first falls, 24% passed the second falls, and 20% made it to Lyle Falls. None of the EMG-tagged fish were able to pass Lyle Falls, either over the falls or via a fishway at Lyle Falls. Mean swimming speeds ranged from as low as 52.6 centimeters per second (cm s{sup -1}) between falls to as high as 189 (cm s{sup -1}) at falls passage. Fish swam above critical swimming speeds while passing the falls more often than while swimming between the falls (58.9% versus 1.7% of the transmitter signals). However, fish expended more energy swimming the stretches between the falls than during actual falls passage (100.7 to 128.2 kilocalories [kcals] to traverse areas between or below falls versus 0.3 to 1.0 kcals to pass falls). Relationships between sex, length, and time of day on the success of falls passage were also examined. Average swimming speeds were highest during the day in all areas except at some waterfalls. There was no apparent relationship between either fish condition or length and successful passage of waterfalls in the lower Klickitat River. Female fall chinook salmon, however, had a much lower likelihood of passing waterfalls than males. The study also examined energy costs and swimming speeds for fish released above Lyle Falls as they migrated to upstream spawning areas. This journey averaged 15.93 days to travel a mean maximum of 37.6 km upstream at a total energy cost of approx 3,971 kcals (34% anaerobic and 66% aerobic) for a sample of five fish. A bioenergetics example was run, which estimated that fall chinook salmon would expend an estimated 1,208 kcal to pass from the mouth of the Columbia River to Bonneville Dam and 874 kcals to pass Bonneville Dam and pool and the three falls on the Lower Klickitat River, plus an additional 2,770 kcals above the falls to reach the spawning grounds, leaving them with approximately 18% (1,089 kcals) of their original energy reserves for spawning. Results of the bioenergetics example suggest that a delay of 9 to 11 days along the lower Klickitat River may deplete their remaining energy reserves (at a rate of about 105 kcal d{sup -1}) resulting in death before spawning would occur.

Brown, Richard S.; Geist, David R.; Confederated Tribes and Bands of the Yakama Nation, Washington

2002-08-30T23:59:59.000Z

467

Hydraulic Characteristics of the Lower Snake River during Periods of Juvenile Fall Chinook Salmon Migration, 2002-2006 Final Report.  

SciTech Connect

This report documents a four-year study to assess hydraulic conditions in the lower Snake River. The work was conducted for the Bonneville Power Administration, U.S. Department of Energy, by the Pacific Northwest National Laboratory. Cold water released from the Dworshak Reservoir hypolimnion during mid- to late-summer months cools the Clearwater River far below equilibrium temperature. The volume of released cold water augments the Clearwater River, and the combined total discharge is on the order of the Snake River discharge when the two rivers meet at their confluence near the upstream edge of Lower Granite Reservoir. With typical temperature differences between the Clearwater and Snake rivers of 10 C or more during July and August, the density difference between the two rivers during summer flow augmentation periods is sufficient to stratify Lower Granite Reservoir as well as the other three reservoirs downstream. Because cooling of the river is desirable for migrating juvenile fall Chinook salmon (Oncorhynchus tshawytscha) during this same time period, the amount of mixing and cold water entrained into Lower Granite Reservoir's epilimnion at the Clearwater/Snake River confluence is of key biological importance. Data collected during this project indicates the three reservoirs downstream of Lower Granite also stratify as direct result of flow augmentation from Dworshak Reservoir. These four reservoirs are also heavily influenced by wind forcing at the water's surface and during periods of low river discharge often behave like a two-layer lake. During these periods of stratification, lower river discharge, and wind forcing, the water in the upper layer of the reservoir is held in place or moves slightly upstream. This upper layer is also exposed to surface heating and may warm up to temperatures close to equilibrium temperature. The thickness (depth) of this upper warm layer and its direction of travel may be of key biological importance to juvenile fall Chinook salmon. This report describes field data collection, modeling, and analysis of hydrodynamic and temperature conditions in the Lower Granite Reservoir during the summer flow augmentation periods of 2002, 2003, and 2004. Although temperature, and hence density, differences during flow augmentation periods between the Clearwater and Snake rivers were approximately equal (7-12 C) for all four years, the discharge ratio varied which resulted in significant differences in entrainment of cooler Clearwater River water into the Lower Granite Reservoir epilimnion. However, as a direct result of system management, Lower Granite Dam tailrace temperatures were maintained near 20 C during all years. Primary differences in the other three lower Snake River reservoirs were therefore a result of meteorological conditions and dam operations, which produced variations in wind setup and surface heating. Circulation patterns in all four lower Snake River reservoirs were numerically simulated for periods of 2002, 2003, 2004, and 2005 using CE-QUAL-W2. Simulation results show that these models are capable of matching diurnal and long-term temperature and velocity changes in the reservoirs. In addition, the confluence zone of the Clearwater and Snake rivers was modeled using the three-dimensional non-hydrostatic model Flow3D. Once calibrated and validated, the reservoir models were used to investigate downstream impacts of alternative reservoir operation schemes, such as increasing or decreasing the ratio of Clearwater to Snake river discharge. Simulation results were linked with the particle tracking model FINS to develop reservoir-integrated metrics that varied due to these alternative operation schemes. Findings indicate that significant alterations in water temperature throughout the lower Snake River are possible by altering hypolimnetic discharges from Dworshak Reservoir, which may also impact the behavior of migrating juvenile fall Chinook salmon during periods of flow augmentation.

Cook, C.; Dibrani, B.; Richmond, M.; Bleich, M.; Titzler, P..; Fu, T. [Pacific Northwest National Laboratory

2006-01-01T23:59:59.000Z

468

ALL-PATHWAYS DOSE ANALYSIS FOR THE PORTSMOUTH ON-SITE WASTE DISPOSAL FACILITY  

SciTech Connect

A Portsmouth On-Site Waste Disposal Facility (OSWDF) All-Pathways analysis has been conducted that considers the radiological impacts to a resident farmer. It is assumed that the resident farmer utilizes a farm pond contaminated by the OSWDF to irrigate a garden and pasture and water livestock from which food for the resident farmer is obtained, and that the farmer utilizes groundwater from the Berea sandstone aquifer for domestic purposes (i.e. drinking water and showering). As described by FBP 2014b the Hydrologic Evaluation of Landfill Performance (HELP) model (Schroeder et al. 1994) and the Surface Transport Over Multiple Phases (STOMP) model (White and Oostrom 2000, 2006) were used to model the flow and transport from the OSWDF to the Points of Assessment (POAs) associated with the 680-ft elevation sandstone layer (680 SSL) and the Berea sandstone aquifer. From this modeling the activity concentrations radionuclides were projected over time at the POAs. The activity concentrations were utilized as input to a GoldSimTM (GTG 2010) dose model, described herein, in order to project the dose to a resident farmer over time. A base case and five sensitivity cases were analyzed. The sensitivity cases included an evaluation of the impacts of using a conservative inventory, an uncased well to the Berea sandstone aquifer, a low waste zone uranium distribution coefficient (Kd), different transfer factors, and reference person exposure parameters (i.e. at 95 percentile). The maximum base case dose within the 1,000 year assessment period was projected to be 1.5E-14 mrem/yr, and the maximum base case dose at any time less than 10,000 years was projected to be 0.002 mrem/yr. The maximum projected dose of any sensitivity case was approximately 2.6 mrem/yr associated with the use of an uncased well to the Berea sandstone aquifer. This sensitivity case is considered very unlikely because it assumes leakage from the location of greatest concentration in the 680 SSL in to the Berea sandstone aquiver over time and does not conform to standard private water well construction practices. The bottom-line is that all predicted doses from the base case and five sensitivity cases fall well below the DOE all-pathways 25 mrem/yr Performance Objective.

Smith, F.; Phifer, M.

2014-04-10T23:59:59.000Z

469

Technology Improvement Pathways to Cost-Effective Vehicle Electrification  

SciTech Connect

Electrifying transportation can reduce or eliminate dependence on foreign fuels, emission of green house gases, and emission of pollutants. One challenge is finding a pathway for vehicles that gains wide market acceptance to achieve a meaningful benefit. This paper evaluates several approaches aimed at making plug-in electric vehicles (EV) and plug-in hybrid electric vehicles (PHEVs) cost-effective including opportunity charging, replacing the battery over the vehicle life, improving battery life, reducing battery cost, and providing electric power directly to the vehicle during a portion of its travel. Many combinations of PHEV electric range and battery power are included. For each case, the model accounts for battery cycle life and the national distribution of driving distances to size the battery optimally. Using the current estimates of battery life and cost, only the dynamically plugged-in pathway was cost-effective to the consumer. Significant improvements in battery life and battery cost also made PHEVs more cost-effective than today's hybrid electric vehicles (HEVs) and conventional internal combustion engine vehicles (CVs).

Brooker, A.; Thornton, M.; Rugh, J. P.

2010-04-01T23:59:59.000Z

470

Thermodynamic pathways to melting, ablation, and solidification in absorbing solids under pulsed laser irradiation  

Science Journals Connector (OSTI)

The thermodynamic pathways involved in laser irradiation of absorbing solids are investigated in silicon for pulse durations of 500fs and 100ps. This is achieved by accounting for carrier and atom dynamics within a combined Monte Carlo and molecular-dynamics scheme and simultaneously tracking the time evolution of the irradiated material in ?-T-P space. Our simulations reveal thermal changes in long-range order and state of aggregation driven, in most cases, by nonequilibrium states of rapidly heated or promptly cooled matter. Under femtosecond irradiation near the ablation threshold, the system is originally pulled to a near-critical state following rapid (?10?12s) disordering of the mechanically unstable crystal and isochoric heating of the resulting metallic liquid. The latter is then adiabatically cooled to the liquid-vapor regime where phase explosion of the subcritical, superheated melt is initiated by a direct conversion of translational, mechanical energy into surface energy on a ?10?12–10?11s time scale. At higher fluences, matter removal involves, instead, the fragmentation of an initially homogeneous fluid subjected to large strain rates upon rapid, supercritical expansion in vacuum. Under picosecond irradiation, homogeneous and, at later times, heterogeneous melting of the superheated solid are followed by nonisochoric heating of the molten metal. In this case, the subcritical liquid material is subsequently cooled onto the binodal by thermal conduction and explosive boiling does not take place; as a result, ablation is associated with a “trivial” fragmentation process, i.e., the relatively slow expansion and dissociation into liquid droplets of supercritical matter near thermodynamic equilibrium. This implies a liquid-vapor equilibration time of ?10?11–10?10s and heating along the binodal under nanosecond irradiation. Solidification of the nonablated, supercooled molten material is eventually observed on a ?10?11–10?9s time scale, irrespective of the pulse duration.

Patrick Lorazo; Laurent J. Lewis; Michel Meunier

2006-04-14T23:59:59.000Z

471

Effectiveness of a dopant in U-Zr metallic fuel to prevent lanthanide migration  

SciTech Connect

The advanced fast reactor concepts to achieve ultra-high burnup (about 50%) without requiring refueling by way of using metallic alloy fuel have gained interest. Fission product lanthanide accumulation at high burnup is substantial and its migration to cladding and reaction with cladding is a potential life-limiting phenomenon. As a means to solve this problem, adding an element that forms stable compounds with lanthanides to immobilize them has been proposed. The theoretical assessment shows that indium, thallium, gallium, and antimony are good candidates. Except for Sb, because these elements are low-melting temperature elements, liquid metal embrittlement of cladding is a concern if large sized agglomerates exist contacting the cladding. Alloy characterization of as-fabricated samples was performed to examine the effectiveness of the dopant addition method using optical microscopy and scanning electron microscopy. Although preliminary, the present results showed that indium is a better dopant to immobilize lanthanides.

Kim, Yeon Soo; Wieneck, T.; O'Hare, E.; Fortner, J. [Argonne National Laboratory 9700 S. Cass Ave, Argonne, IL 60439 (United States)

2013-07-01T23:59:59.000Z

472

Simulations of Ion Migration in the LCLS RF Gun and Injector  

SciTech Connect

The motivation for this work was the observed surface contamination of the first LCLS RF gun copper cathode. We will present the results of simulations in regards to ion migration in the LCLS gun. Ions of residual gases will be created by interaction of molecular gas species with the UV drive laser beam and by the electron beam itself. The larger part of those ionized molecules remain in the vicinity of creation, are transported towards beam line walls or away from the cathode. However a small fraction gains enough kinetic energy, focused by RF and magnetic fields and propagates to the cathode, producing an undesirable increase of the cathode's surface work function. Although this fraction is small, during long term operation, this effect may become a significant factor limiting the source performance.

Brachmann, Axel; /SLAC; Dowell, David; /SLAC

2012-06-25T23:59:59.000Z

473

Evidence of stress?mediated Hg migration in Hg1?x Cd x Te  

Science Journals Connector (OSTI)

Photoemission results from some ?110? cleaved surfaces of Hg1?x Cd x Te indicate that the Fermi level is pinned suggesting that while the bulk of the material is p type the area stressed during cleavage has been converted to n type. Electrolyte electroreflectance (EER) measurement confirmed the n?type character of the cleaved surface and showed that the alloy composition x at the surface after cleavage is high (x=0.22) compared to the bulk value (x=0.185). The high x value associated with the n character indicates that under stress the Hg migrates at least partially via the formation of donor defects. The defect density is reflected in the EER linewidth.

P. M. Raccah; U. Lee; J. A. Silberman; W. E. Spicer; J. A. Wilson

1983-01-01T23:59:59.000Z

474

Finite Element Modeling of Suspended Particle Migration in Non-Newtonian Fluids  

SciTech Connect

Shear-induced migration of particles is studied during the slow flow of suspensions of spheres (particle volume fraction {phi} = 0.50) in an inelastic but shear-thinning, suspending fluid in flow between counterrotating concentric cylinders, The conditions are such that nonhydrodynamic effects are negligible. The movement of particles away from the high shear rate region is more pronounced than in a Newtonian suspending liquid. We test a continuum constitutive model for the evolution of particle concentration in a flowing suspension proposed by Phillips et al. (1992) by using shear-thinning, suspending fluids. The fluid constitutive equation is Carreau-like in its shear-thinning behavior but also varies with the local particle concentration. The model is compared with the experimental data gathered with nuclear magnetic resonance (NMR) imaging.

Altobelli, S.; Baer, T.; Mondy, L.; Rao, R.; Stephens, T.

1999-03-04T23:59:59.000Z

475

Computer simulation of hydraulic fracturing in shales-influences on primary migration  

SciTech Connect

Hydraulic tension fractures in a shale layer during sedimentation are simulated by use of computer techniques. The depth at which fractures form is directly proportional to the hydraulic conductivity and tensile strength, and inversely proportional to the rate of sedimentation and thickness of the shale layer. Hydraulic fractures may form at depths of oil generation to facilitate primary migration. This paper describes an attempt to simulate the process of hydraulic fracturing during burial and compaction of a shale layer by use of an elementary model. One objective is to investigate the role of various factors in hydraulic tension fracturing of shales in a tectonically relaxed area. Another objective is to see whether hydraulic fractures form at depths of oil generation.

Ozkaya, I.

1984-05-01T23:59:59.000Z

476

Fish Migration, Dams, and Loss of Ecosystem Services in the Mekong Basin  

SciTech Connect

The past decade has seen increased international recognition of the importance of the services provided by natural ecosystems. It is unclear however whether such international awareness will lead to improved environmental management in many regions. We explore this issue by examining the specific case of fish migration and dams on the Mekong river. We determine that dams on the Mekong mainstem and major tributaries will have a major impact on the basin's fisheries and the people who depend upon them for food and income. We find no evidence that current moves towards dam construction will stop, and consider two scenarios for the future of the fisheries and other ecosystems of the basin. We conclude that major investment is required in innovative technology to reduce the loss of ecosystem services, and alternative livelihood strategies to cope with the losses that do occur

Dugan, Patrick J. [WorldFish Center; Barlow, Chris [Australian Center for International Agricultural Research (ACIAR); Agostinho, Angelo A. [Fundacao University, Parana Brazil; Baran, Eric [WorldFish Center; Cada, Glenn F [ORNL; Chen, Daqing [Yangtze River Fisheries Research Institute, People's Republic of China; Cowx, Ian G. [Hull International Fisheries Research Institute, England; Ferguson, John W. [North West Fisheries Science Center, Seattle, WA; Jutagate, Tuantong [Ubon Ratchathani University, Ubon Ratchathani, Thailand; Mallen-Cooper, Martin [Fishway Consulting Service, Australia; Marmulla, Gerd [Food and Agriculture Organization of the United Nations (FAO), Rome, Italy; Nestler, John [USA Corps Engineers, Concord, MA USA; Petrere, Miquel [Universidade Estadual Paulista, Rio Claro, Brazil; Winemiller, Kirk O. [Texas A& M University

2010-06-01T23:59:59.000Z

477

Migration in alluvium of chlorine-36 and tritium from an underground nuclear test  

SciTech Connect

This article describes a field experiment studying the migration in alluvium of radioactive elements away from an underground nuclear explosion at the Nevada Test Site in the United States. Nuclides detected in the pumped water are tritium, chlorine-36, iodine-129, and krypton-85 - all at levels below the maximum permissible concentration for drinking water in controlled areas. The chlorine-36 elution curve precedes that of tritium, and is due to an anion exclusion process. A conventional two-dimensional convection-diffusion equation does not fully describe the elution curves for tritium and chlorine-36; the tailing of the curves is longer than predicted. Successful modeling of this experiment will be important for validating codes and models to be used in the high-level nuclear waste program.

Ogard, A.E.; Thompson, J.L.; Rundberg, R.S.; Wolfsberg, K.; Kubik, P.W.; Elmore, D.; Bentley, H.W.

1987-01-01T23:59:59.000Z

478

Fundamental Studies of Charge Migration and Delocalization Relevant to Solar Energy Conversion  

SciTech Connect

This program aimed to understand the molecular-level principles by which complex chemical systems carry out photochemical charge separation, transport, and storage, and how these insights could impact the design of practical solar energy conversion and storage devices. Towards these goals, this program focused on: (1) carrying out fundamental mechanistic and transient dynamical studies of proton-coupled electron-transfer (PCET) reactions; (2) characterizing and interrogating via electron paramagnetic resonance (EPR) spectroscopic methods novel conjugated materials that feature large charge delocalization lengths; and (3) exploring excitation delocalization and migration, as well as polaron transport properties of meso-scale assemblies that are capable of segregating light-harvesting antennae, nanoscale wire-like conduction elements, and distinct oxidizing and reducing environments.

Michael J. Therien

2012-06-01T23:59:59.000Z

479

Palladium and ruthenium supported silver migration in 3C–silicon carbide  

Science Journals Connector (OSTI)

Abstract Surrogate TRISO particles were infiltrated with a Pd Ag mixture and heat treated at 1000 °C to investigate the effect of Pd on Ag transport through current state of the art TRISO coatings for use in HTGRs. The experiment was repeated with Ru instead of Pd because of the similarities in the reaction between Pd and Ru with SiC. It was found that both Pd and Ru form their respective silicides after heat treatment together with the simultaneous precipitation of graphite. In both cases Ag was concentrated along the leading edge of the reaction zone which itself was concentrated along grain boundaries. However, the effect of Pd was much more pronounced than that of Ru making Ru at most a secondary contributor to Ag migration through SiC in TRISO fuel.

Jacques Herman O’Connell; Johannes Henoch Neethling

2015-01-01T23:59:59.000Z

480

Effect of activity differences on hydrogen migration in dissimilar titanium alloy welds  

SciTech Connect

The effect of alloy composition on hydrogen activity was measured for seven titanium alloys as a means to determine the tendency for hydrogen migration within dissimilar metal welds. The alloys were: Ti-CP (unalloyed Ti), Ti-3Al-2.5V, Ti-3Al-2.5V-3Zr, Ti-3Al-2Nb-1Ta, Ti-6Al, Ti-6Al-4V, and Ti-6Al-2Nb-1Ta-0.8Mo. Hydrogen pressure-hydrogen concentration relationships were determined for temperatures from 600 C to 800 C and hydrogen concentrations up to approximately 3.5 at. pct (750 wppm). Fusion welds were made between Ti-CP and Ti-CP and between Ti-CP and Ti-6Al-4V to observe directly the hydrogen redistribution in similar and dissimilar metal couples. Hydrogen activity was found to be significantly affected by alloying elements, particularly Al in solid solution. At a constant Al content and temperature, an increase in the volume fraction of {beta} reduced the activity of hydrogen in {alpha}-{beta} alloys. Activity was also found to be strongly affected by temperature. The effect of temperature differences on hydrogen activity was much greater than the effects resulting from alloy composition differences at a given temperature. Thus, hydrogen redistribution should be expected within similar metal couples subjected to extreme temperature gradients, such as those peculiar to fusion welding. Significant hydrogen redistribution in dissimilar alloy weldments also can be expected for many of the compositions in this study. Hydride formation stemming from these driving forces was observed in the dissimilar couple fusion welds. In addition, a basis for estimating hydrogen migration in titanium welds, based on hydrogen activity data, is described.

Kennedy, J.R.; Adler, P.N. [Grumman Corp., Bethpage, NY (United States). Corporate Research Center; Margolin, H. [Polytechnic Univ., Brooklyn, NY (United States). Dept. of Materials Science and Engineering

1993-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "migration pathway timing" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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481

Involvement of ER stress and activation of apoptotic pathways in fisetin induced cytotoxicity in human melanoma  

Science Journals Connector (OSTI)

Abstract The prognosis of malignant melanoma remains poor in spite of recent advances in therapeutic strategies for the deadly disease. Fisetin, a dietary flavonoid is currently being investigated for its growth inhibitory properties in various cancer models. We previously showed that fisetin inhibited melanoma growth in vitro and in vivo. Here, we evaluated the molecular basis of fisetin induced cytotoxicity in metastatic human melanoma cells. Fisetin treatment induced endoplasmic reticulum (ER) stress in highly aggressive A375 and 451Lu human melanoma cells, as revealed by up-regulation of ER stress markers including IRE1?, XBP1s, ATF4 and GRP78. Time course analysis indicated that the ER stress was associated with activation of the extrinsic and intrinsic apoptotic pathways. Fisetin treated 2-D melanoma cultures displayed autophagic response concomitant with induction of apoptosis. Prolonged treatment (16 days) with fisetin in a 3-D reconstituted melanoma model resulted in inhibition of melanoma progression with significant apoptosis, as evidenced by increased staining of cleaved Caspase-3 in the treated constructs. However, no difference in the expression of autophagic marker LC-3 was noted between treated and control groups. Fisetin treatment to 2-D melanoma cultures resulted in phosphorylation and activation of the multifunctional AMP-activated protein kinase (AMPK) involved in the regulation of diverse cellular processes, including autophagy and apoptosis. Silencing of AMPK failed to prevent cell death indicating that fisetin induced cytotoxicity is mediated through both AMPK-dependent and -independent mechanisms. Taken together, our studies confirm apoptosis as the primary mechanism through which fisetin inhibits melanoma cell growth and that activation of both extrinsic and intrinsic pathways contributes to fisetin induced cytotoxicity.

Deeba N. Syed; Rahul K. Lall; Jean Christopher Chamcheu; Omar Haidar; Hasan Mukhtar

2014-01-01T23:59:59.000Z

482

DNA Damage Pathways: Low Dose Response and Cross-Talk in TGFβ and ATM  

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

Damage Pathways: Low Dose Response and Cross-Talk in TGFβ and ATM Damage Pathways: Low Dose Response and Cross-Talk in TGFβ and ATM Signaling Peter O'Neill University of Oxford Abstract The ATM and TGFbeta signal transduction pathways are essential to cellular and tissue control responses to ionizing radiation (IR) and aberrant modifications to these pathways are extensive in cancer. We hypothesize that the ATM and TGFbeta signaling pathways are fully induced at high doses of acute low-LET radiation, whereas only partially induced at low doses. As a consequence of partial stimulation of these pathways important questions arise not only on the validity of the linear no-threshold assumption used in radiation regulations, but also on our ability to extrapolate experimental and human epidemiology data from high to low doses. The

483

Efficient CO2 Fixation Pathways: Energy Plant: High Efficiency Photosynthetic Organisms  

SciTech Connect

PETRO Project: UCLA is redesigning the carbon fixation pathways of plants to make them more efficient at capturing the energy in sunlight. Carbon fixation is the key process that plants use to convert carbon dioxide (CO2) from the atmosphere into higher energy molecules (such as sugars) using energy from the sun. UCLA is addressing the inefficiency of the process through an alternative biochemical pathway that uses 50% less energy than the pathway used by all land plants. In addition, instead of producing sugars, UCLA’s designer pathway will produce pyruvate, the precursor of choice for a wide variety of liquid fuels. Theoretically, the new biochemical pathway will allow a plant to capture 200% as much CO2 using the same amount of light. The pathways will first be tested on model photosynthetic organisms and later incorporated into other plants, thus dramatically improving the productivity of both food and fuel crops.

None

2012-01-01T23:59:59.000Z

484

Magnetic compass orientation is well established in night-migrating songbirds (for example reviews, see Wiltschko and  

E-Print Network (OSTI)

Magnetic compass orientation is well established in night- migrating songbirds (for example reviews hypotheses have been proposed, and both are supported by some experimental evidence. Magnetic fields may of the bird (Leask, 1977; Ritz et al., 2000; Wiltschko et al., 2002) and/or magnetic fields may be sensed via

Anderson, David J.

485

Rear actomyosin contractility-driven directional cell migration in three-dimensional matrices: a mechano-chemical coupling mechanism  

Science Journals Connector (OSTI)

...underlying mechanisms. In this review, we aim to shed some light...chains (MLCs); two 20 kDa regulatory light chains (RLCs), which...as well as the National 111 Plan Base (B06023) and the Public...control of cell migration: a review. Integr. Biol. 4, 37-52...

2014-01-01T23:59:59.000Z

486

Effects of Solute and Vacancy Segregation on Migration of a/4 and a/2 Antiphase Boundaries in Fe?Al  

E-Print Network (OSTI)

The effects of segregation of solute atoms and vacancies on migration of a/4?1 1 1? and a/2?1 0 0? antiphase domain boundaries (APDBs) in stoichiometric Fe3Al at various temperatures are studied using a phase-field model ...

Allen, Samuel Miller

487

Hydrogen Supply: Cost Estimate for Hydrogen Pathways—Scoping Analysis. January 22, 2002—July 22, 2002  

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

A report showing a comparative scooping economic analysis of 19 pathways for producing, handling, distributing, and dispensing hydrogen for fuel cell vehicle applications.

488

E-Print Network 3.0 - acid biosynthetic pathway1oa Sample Search...  

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

in trees and forage crops based on our needs. Currently, the biosynthetic pathway of lignin has been well... modification.7,8 In contrast, our understanding on the...

489

E-Print Network 3.0 - acid biosynthetic pathway Sample Search...  

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

pathway in Escherichia coli... . Here we identify a novel biosynthetic alternative to D2 diesel fuel, bisabolane, and engineer microbial... biosynthetic bisabolene into...

490

Zirconium Catalyst Follows a Low Energy Pathway for Carbon-Nitrogen...  

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

Zirconium Catalyst Follows a Low Energy Pathway for Carbon-Nitrogen Bond Formation Chemists have synthesized a highly selective and highly efficient zirconium catalyst that makes...

491

E-Print Network 3.0 - auditory pathways Sample Search Results  

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

cative of auditory pathway tumors or neural... of performance on certain language and listening tasks. Importantly, they target the ... Source: Kraus, Nina - Departments of...

492

Further improvement of conventional diesel NOx aftertreatment concepts as pathway for SULEV  

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

Discusses possible improvement potential and various pathways for LNT after-treatment systems for diesel applications to comply with Tier 2 Bin 5 and SULEV regulations

493

E-Print Network 3.0 - arterial baroreceptor pathways Sample Search...  

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

pathways Page: << < 1 2 3 4 5 > >> 1 Modelingof Feedback Mechanisms which Control the Heart Function Summary: .1 InteractionbetweenVentricleandArterialLoad . . . . . . . . . ....

494

E-Print Network 3.0 - alternative pathway responsible Sample...  

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

of these pathways might... . The subgraph extraction might thus reveal an ... Source: Gilbert, David - Department of Computing Science, University of Glasgow Collection:...

495

E-Print Network 3.0 - ageing-related signalling pathways Sample...  

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

in Cognitive Performance Summary: , although age-related decline in FA for the SLF was greater in the portion of this pathway anterior... research has established that...

496

Topological Aspects of DNA Function and Protein Folding 523 Knotting pathways in proteins  

E-Print Network (OSTI)

Topological Aspects of DNA Function and Protein Folding 523 Knotting pathways in proteins Joanna I Key words: artificial knot, chaperone, free energy landscape, knotted protein, protein folding

Bigelow, Stephen

497

E-Print Network 3.0 - albumin unfolding pathway Sample Search...  

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

of a Partially Unfolded, Aggregation-Competent Intermediate at Summary: of protein folding (1, 2), to demonstrate the possibility of multiple pathways for folding and...

498

E-Print Network 3.0 - aquatic food pathways Sample Search Results  

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

results for: aquatic food pathways Page: << < 1 2 3 4 5 > >> 1 AQUATIC MICROBIAL ECOLOGY Aquat Microb Ecol Summary: and population control 1994 Jrgens -- Impact of Daphnia...

499

Lifecycle Analysis of Air Quality Impacts of Hydrogen and Gasoline Transportation Fuel Pathways  

E-Print Network (OSTI)

of Hydrogen Supply Pathways on Urban Air Quality of Primaryair quality ..130, 192–201. AQS, 2006. Air Quality System. United States

Wang, Guihua

2008-01-01T23:59:59.000Z

500

Influence of Surface Currents in the Dispersal Pathways of Eggs of Cubera Snapper, Lutjanus cyanopterus (Cuvier, 1828), at a Spawning Aggregation Site at Gladden Spit, Belize  

E-Print Network (OSTI)

Influence of Surface Currents in the Dispersal Pathways of Eggs of Cubera Snapper, Lutjanus cyanopterus (Cuvier, 1828), at a Spawning Aggregation Site at Gladden Spit, Belize. (August 2012) Adriana Méndez-Jiménez, B.A., Unversidad de Bogotá Jorge Tadeo... 2008). Aggregation periods are highly dependent on the species but their timing is generally associated with various phases of the moon and tidal currents (Johannes 1978, Robertson 1991, Heyman et al. 2001b, Nemeth 2009). Immediately after spawning...

Mendez-Jimenez, Adriana

2012-10-19T23:59:59.000Z