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Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Design and Optimization of a Biochemical Production Platform with Biosensor-Guided Synthetic Evolution  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat Pump Models |Conduct, Parent Company Agrees toDepartment ofof3, 2015 DOE BETO

2

Directed evolution: an evolving and enabling synthetic biology tool  

E-Print Network [OSTI]

Directed evolution: an evolving and enabling synthetic biology tool Ryan E Cobb1 , Tong Si1 remains a valuable tool for synthetic biology, enabling the identification of desired functionalities from biological entity with the intent of identifying those with desired proper- ties. While a powerful tool

Zhao, Huimin

3

Biogeography and Evolution of the Araneae: A Synthetic Approach  

E-Print Network [OSTI]

Various methods are used to study the evolution and biogeography of the Araneae through time. Two new fossil spider species were described from Miocene Dominican amber and French Cretaceous amber. A preliminary biogeographic ...

Saupe, Erin E.

2010-04-18T23:59:59.000Z

4

Evolution of complex organic molecules in hot molecular cores: Synthetic spectra at (sub-)mm wavebands  

E-Print Network [OSTI]

Hot molecular cores (HMCs) are intermediate stages of high-mass star formation and are also known for their rich emission line spectra at (sub-)mm wavebands. The observed spectral feature of HMCs such as total number of emission lines and associated line intensities are also found to vary with evolutionary stages. We developed various 3D models for HMCs guided by the evolutionary scenarios proposed by recent empirical and modeling studies. We then investigated the spatio-temporal variation of temperature and molecular abundances in HMCs by consistently coupling gas-grain chemical evolution with radiative transfer calculations. We explored the effects of varying physical conditions on molecular abundances including density distribution and luminosity evolution of the central protostar(s). The time-dependent temperature structure of the hot core models provides a realistic framework for investigating the spatial variation of ice mantle evaporation as a function of evolutionary timescales. With increasing protos...

Choudhury, Rumpa; Stéphan, Gwendoline; Bergin, Edwin A; Möller, Thomas; Schmiedeke, Anika; Zernickel, Alexander

2015-01-01T23:59:59.000Z

5

Dartmouth Stellar Evolution Database and the ACS Survey of Galactic Globular Clusters II. Stellar Evolution Tracks, Isochrones, Luminosity Functions, and Synthetic Horizontal-Branch Models  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Web tools are also available at the home page (http://stellar.dartmouth.edu/~models/index.html). These tools allow users to create isochrones and convert them to luminosity functions or create synthetic horizontal branch models.

Dotter, A; Chaboyer, B; Jevremovic, D; Kostov, V; Baron, E; Ferguson, J; Sarajedini, A; Anderson, J

6

Evolution of the Macondo Well Blowout: Simulating the Effects of the Circulation and Synthetic Dispersants on the Subsea Oil  

E-Print Network [OSTI]

Dispersants on the Subsea Oil Transport Claire B. Paris,*, Matthieu Le Henaff,, Zachary M. Aman,§ Ajit assessment of the potential effect of the dispersant on the subsea-to-surface oil partition. We adapted blowouts and on gauging the subsea use of synthetic dispersant in mitigating coastal damage. INTRODUCTION

Paris-Limouzy, Claire B.

7

Response to Comment on "Evolution of the Macondo Well Blowout: Simulating the Effects of the Circulation and Synthetic Dispersants  

E-Print Network [OSTI]

al.6 studied oil droplet diameters in a wave tank and measured mean oil droplet diameters (by mass al.1 to suggest the presence of gas bubbles can explain this purported increase the oil droplet size of the Circulation and Synthetic Dispersants on the Subsea Oil Transport" The comments by Adams et al.1 question

Paris-Limouzy, Claire B.

8

Synthetic chloroplasts  

SciTech Connect (OSTI)

The principal function of the chloroplast is to capture solar quanta and to store them in some stable form. We are in the process of trying to construct a totally synthetic system that would simulate some of the reactions of the two photosystems which occur in natural chloroplasts. Toward this end, we have demonstrated a number of the reactions required in separated systems. We have shown that it is possible to transfer electrons across an insulating membrane barrier with a surfactant photosensitizer. Others have shown, and we have confirmed, that it is possible to collect the two electrons necessary for the generation of molecular hydrogen on a heterogeneous catalyst suspended in water and similarly to collect the four holes on another heterogeneous catalyst suspended in water for the generation of molecular oxygen. A synthesis of some of these molecular catalysts for both these purposes is underway, with some partial success. When these partial reactions are assembled in a system, the resulting synthetic chloroplasts will not resemble the natural entity in detailed construction as they will contain no protein.

Calvin, M.

1980-06-01T23:59:59.000Z

9

DISTRIBUTED AND COLLABORATIVE SYNTHETIC ENVIRONMENTS  

E-Print Network [OSTI]

1 DISTRIBUTED AND COLLABORATIVE SYNTHETIC ENVIRONMENTS Chandrajit L. Bajaj and Fausto Bernardini with synthetic environments1,2,3,4,5,6 . A synthetic environment system is generally characterized and the synthetic environment generated by the computer. Several degrees of immersion are possible, ranging from

Texas at Austin, University of

10

Synthetic guide star generation  

DOE Patents [OSTI]

A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.

Payne, Stephen A. (Castro Valley, CA) [Castro Valley, CA; Page, Ralph H. (Castro Valley, CA) [Castro Valley, CA; Ebbers, Christopher A. (Livermore, CA) [Livermore, CA; Beach, Raymond J. (Livermore, CA) [Livermore, CA

2008-06-10T23:59:59.000Z

11

Biodegradable synthetic bone composites  

DOE Patents [OSTI]

The invention provides for a biodegradable synthetic bone composition comprising a biodegradable hydrogel polymer scaffold comprising a plurality of hydrolytically unstable linkages, and an inorganic component; such as a biodegradable poly(hydroxyethylmethacrylate)/hydroxyapatite (pHEMA/HA) hydrogel composite possessing mineral content approximately that of human bone.

Liu, Gao; Zhao, Dacheng; Saiz, Eduardo; Tomsia, Antoni P.

2013-01-01T23:59:59.000Z

12

Synthetic aircraft turbine oil  

SciTech Connect (OSTI)

Synthetic lubricating oil composition having improved oxidation stability comprising a major portion of an aliphatic ester base oil having lubricating properties, formed by the reaction of pentaerythritol and an organic monocarboxylic acid and containing a phenylnaphthylamine, a dialkyldiphenylamine, a polyhydroxy anthraquinone, a hydrocarbyl phosphate ester and a dialkyldisulfide.

Yaffe, R.

1982-03-16T23:59:59.000Z

13

Guest Editors' Introduction: Synthetic Biology  

E-Print Network [OSTI]

+ undergraduate participants from around the world. Synthetic Biology had a global market which gene- rated $233 Tufts University h SYNTHETIC BIOLOGY IS trending, as evidenced by the recent achievements in biofuels

Densmore, Douglas

14

High temperature synthetic cement retarder  

SciTech Connect (OSTI)

A synthetic cement retarder which provides excellent retardation and compressive strength development has been synthesized. The response properties and temperature ranges of the synthetic retarder far exceed those of commonly used retarders such as lignosulfonates. The chemical nature of the new retarder is discussed and compared to another synthetic retarder.

Eoff, L.S.; Buster, D.

1995-11-01T23:59:59.000Z

15

Catalyst for splitting water &Catalyst for splitting water & Synthetic Modeling of InorganicSynthetic Modeling of Inorganic  

E-Print Network [OSTI]

Importance Hydrogen technology in fuel cellsHydrogen technology in fuel cells As a combustion fuel, it producesCatalyst for splitting water &Catalyst for splitting water & Synthetic Modeling of Inorganic of evolution ·Optimized catalyst for water splitting in all oxygenic phototrophs S0 S4 S1 S2 S3 O2 2 H O2 e- e

Petta, Jason

16

Synthetic biology: Understanding biological design from synthetic circuits  

E-Print Network [OSTI]

An important aim of synthetic biology is to uncover the design principles of natural biological systems through the rational design of gene and protein circuits. Here, we highlight how the process of engineering biological ...

Mukherji, Shankar

17

DTU Synthetic Promoter Library Standard  

E-Print Network [OSTI]

The purpose of this RFC is to outline a method for generating a BioBrick compatible Synthetic Promoter Library (SPL) within bacteria in order to fine-tune the expression of BioBrick parts and devices.

Fortuna, Patrick

2010-12-04T23:59:59.000Z

18

Synthetic biology and crop engineering  

Broader source: Energy.gov [DOE]

Breakout Session 2: Frontiers and Horizons Session 2-A: Synthetic Biology and the Promise of Biofuels Jonathan Burbaum, Program Director, Department of Energy, Office of Science, ARPA–E

19

SYNTHETIC SLING FAILURE - EVALUATIONS & RECOMMENDATIONS  

SciTech Connect (OSTI)

The information and evaluations provided in this report were compiled to address the recurring problem of synthetic sling failure. As safety is the number one priority in all work aspects, a solution must be devised to prevent accidents from occurring. A total of thirteen cases regarding synthetic sling failure were evaluated in order to determine their causes, effects, and preventative measures. From the collected data, it was found that all cases in which the synthetic sling contacted the edge of its load resulted in sling failure. It is required that adequate synthetic sling protection devices be used to protect slings in any lift where the sling comes in direct contact with the edge or corner of its load. However, there are no consensus codes or standards stating the type, material, or purpose of the type of protective device used to protect the sling from being cut. Numerous industry standards and codes provide vague descriptions on how to protect synthetic slings. Without a clear, concise statement of how to protect synthetic slings, it is common for inadequate materials and sling protection devices to be used in an attempt to meet the intent of these requirements. The use of an inadequate sling protection device is the main cause of synthetic sling failure in all researched cases. Commercial sling protection devices come in many shapes and sizes, and have a variety of names, as well as advertised uses. 'Abrasion pads' and 'wear protectors' are two different names for products with the same intended purpose. There is no distinguishable way to determine the extent of sling protection which these devices will provide, or what specific scenarios they are made for. This creates room for error in a field where error is unacceptable. This report provides a recommended action for hoisting and rigging activities which require synthetic slings to contact a load, as well as recommended changes to industry standards which will benefit overall industry safety.

MACKEY TC; HENDERSON CS

2009-10-26T23:59:59.000Z

20

Future Prospects of Synthetic Fuels  

E-Print Network [OSTI]

It is important for the future of this nation to reach the goal of demonstrated definition and quantification of the parameters which influence the ability to use this country's vast resources of coal and oil shale for production of synthetic fuels...

Fryback, M. G.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Synthetic LDL as targeted drug delivery vehicle  

DOE Patents [OSTI]

The present invention provides a synthetic LDL nanoparticle comprising a lipid moiety and a synthetic chimeric peptide so as to be capable of binding the LDL receptor. The synthetic LDL nanoparticle of the present invention is capable of incorporating and targeting therapeutics to cells expressing the LDL receptor for diseases associated with the expression of the LDL receptor such as central nervous system diseases. The invention further provides methods of using such synthetic LDL nanoparticles.

Forte, Trudy M. (Berkeley, CA); Nikanjam, Mina (Richmond, CA)

2012-08-28T23:59:59.000Z

22

Synthetic thermoelectric materials comprising phononic crystals  

DOE Patents [OSTI]

Synthetic thermoelectric materials comprising phononic crystals can simultaneously have a large Seebeck coefficient, high electrical conductivity, and low thermal conductivity. Such synthetic thermoelectric materials can enable improved thermoelectric devices, such as thermoelectric generators and coolers, with improved performance. Such synthetic thermoelectric materials and devices can be fabricated using techniques that are compatible with standard microelectronics.

El-Kady, Ihab F; Olsson, Roy H; Hopkins, Patrick; Reinke, Charles; Kim, Bongsang

2013-08-13T23:59:59.000Z

23

Synthetic carbonaceous fuels and feedstocks  

DOE Patents [OSTI]

This invention relates to the use of a three compartment electrolytic cell in the production of synthetic carbonaceous fuels and chemical feedstocks such as gasoline, methane and methanol by electrolyzing an aqueous sodium carbonate/bicarbonate solution, obtained from scrubbing atmospheric carbon dioxide with an aqueous sodium hydroxide solution, whereby the hydrogen generated at the cathode and the carbon dioxide liberated in the center compartment are combined thermocatalytically into methanol and gasoline blends. The oxygen generated at the anode is preferably vented into the atmosphere, and the regenerated sodium hydroxide produced at the cathode is reused for scrubbing the CO.sub.2 from the atmosphere.

Steinberg, Meyer (Huntington Station, NY)

1980-01-01T23:59:59.000Z

24

Fracture of synthetic diamond M. D. Droty  

E-Print Network [OSTI]

Fracture of synthetic diamond M. D. Droty Ctystallume, 3506 Bassett Street, Santa Clara, California 1995) The fracture behavior of synthetic diamond has been investigated using indentation methods and by the tensile testing of pre-notched fracture-mechanics type samples. Specifically, the fracture toughness

Ritchie, Robert

25

Abstract The rapidly emerging field of synthetic biology  

E-Print Network [OSTI]

Abstract The rapidly emerging field of synthetic biology originated, as synthetic biology has expanded into mammalian systems, it is increasingly more. Biomaterials will play an important role in advancing synthetic biology

Reisslein, Martin

26

Molecular Interactions of Plutonium(VI) with SyntheticManganese...  

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

Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite. Molecular Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite. Abstract:...

27

Iterative synthetic aperture radar imaging algorithms   

E-Print Network [OSTI]

Synthetic aperture radar is an important tool in a wide range of civilian and military imaging applications. This is primarily due to its ability to image in all weather conditions, during both the day and the night, ...

Kelly, Shaun Innes

2014-06-30T23:59:59.000Z

28

A modelling framework for Synthetic Biology  

E-Print Network [OSTI]

A modelling framework for Synthetic Biology Jakob Jakobsen Boysen Sune Mølgaard Laursen Kongens, 14-03-2014 Jakob Jakobsen Boysen & Sune Mølgaard Laursen #12;vi #12;Contents Summary (English) i

29

Synthetic analogs of bacterial quorum sensors  

DOE Patents [OSTI]

Bacterial quorum-sensing molecule analogs having the following structures: ##STR00001## and methods of reducing bacterial pathogenicity, comprising providing a biological system comprising pathogenic bacteria which produce natural quorum-sensing molecule; providing a synthetic bacterial quorum-sensing molecule having the above structures and introducing the synthetic quorum-sensing molecule into the biological system comprising pathogenic bacteria. Further is provided a method of targeted delivery of an antibiotic, comprising providing a synthetic quorum-sensing molecule; chemically linking the synthetic quorum-sensing molecule to an antibiotic to produce a quorum-sensing molecule-antibiotic conjugate; and introducing the conjugate into a biological system comprising pathogenic bacteria susceptible to the antibiotic.

Iyer, Rashi (Los Alamos, NM); Ganguly, Kumkum (Los Alamos, NM); Silks, Louis A. (Los Alamos, NM)

2011-12-06T23:59:59.000Z

30

Synthetic analogs of bacterial quorum sensors  

DOE Patents [OSTI]

Bacterial quorum-sensing molecule analogs having the following structures: ##STR00001## and methods of reducing bacterial pathogenicity, comprising providing a biological system comprising pathogenic bacteria which produce natural quorum-sensing molecule; providing a synthetic bacterial quorum-sensing molecule having the above structures and introducing the synthetic quorum-sensing molecule into the biological system comprising pathogenic bacteria. Further is provided a method of targeted delivery of an antibiotic, comprising providing a synthetic quorum-sensing molecule; chemically linking the synthetic quorum-sensing molecule to an antibiotic to produce a quorum-sensing molecule-antibiotic conjugate; and introducing the conjugate into a biological system comprising pathogenic bacteria susceptible to the antibiotic.

Iyer, Rashi S.; Ganguly, Kumkum; Silks, Louis A.

2013-01-08T23:59:59.000Z

31

Foundational platform for mammalian synthetic biology  

E-Print Network [OSTI]

The emergent field of synthetic biology is different from many other biological engineering efforts, in that its roots, design principles, and forward engineering perspective have been adopted from electrical engineering ...

Davidsohn, Noah (Noah Justin)

2013-01-01T23:59:59.000Z

32

Synthetic morphogenesis : space, time, and deformation  

E-Print Network [OSTI]

Synthetic biology has presented engineers with a fascinating opportunity: can we understand the principles of our origins { animal embryonic development - by re-engineering it in the laboratory? I investigate, from an ...

Brodsky, Micah Z. (Micah Zev)

2014-01-01T23:59:59.000Z

33

Synthetic heparin-binding growth factor analogs  

DOE Patents [OSTI]

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

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

2007-01-23T23:59:59.000Z

34

Synthetic Datasets Rong Huang, Rada Chirkova, Yahya Fathi  

E-Print Network [OSTI]

Synthetic Datasets Rong Huang, Rada Chirkova, Yahya Fathi 1 Introduction Datasets may be generated will define symmetric synthetic dataset and two types of non-symmetric synthetic datasets that has some introduce symmetric synthetic dataset, its structure and the properties of the associated views. In Section

Young, R. Michael

35

New Synthetic Methods for Hypericum Natural Products  

SciTech Connect (OSTI)

Organic chemistry has served as a solid foundation for interdisciplinary research areas, such as molecular biology and medicinal chemistry. An understanding of the biological activities and structural elucidations of natural products can lead to the development of clinically valuable therapeutic options. The advancements of modern synthetic methodologies allow for more elaborate and concise natural product syntheses. The theme of this study centers on the synthesis of natural products with particularly challenging structures and interesting biological activities. The synthetic expertise developed here will be applicable to analog syntheses and to other research problems.

Insik Jeon

2006-12-12T23:59:59.000Z

36

Synthetic heparin-binding factor analogs  

DOE Patents [OSTI]

The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain, and preferably two peptide chains branched from a dipeptide branch moiety composed of two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a linker, which may be a hydrophobic linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

Pena, Louis A. (Poquott, NY); Zamora, Paul O. (Gaithersburg, MD); Lin, Xinhua (Plainview, NY); Glass, John D. (Shoreham, NY)

2010-04-20T23:59:59.000Z

37

Intelligibility enhancement of synthetic speech in noise  

E-Print Network [OSTI]

Intelligibility enhancement of synthetic speech in noise C´assia Valentini Botinh~ao TH E U N I V E of a hidden Markov model (HMM-) based speech synthesis system that allows for flexible enhancement strategies with noise-independent enhancement approaches based on the acoustics of highly intelligible speech

Edinburgh, University of

38

1 Synthetic Texturing 1.1 Introduction  

E-Print Network [OSTI]

1 Synthetic Texturing 1.1 Introduction This dissertation describes improved methods for computer of this, the top of Figure 1.1 shows a horse model with a white surface and the bottom shows this same-hocformulasforlightreflection Figure 1.1: Stripe texture created using reaction-diffusion. Top is an untextured horse and the bottom

Turk, Greg

39

Immobilization of radioiodine in synthetic boracite  

DOE Patents [OSTI]

A nuclear waste storage product is disclosed in which radioiodine is incorporated in a synthetic boracite. The boracite may be prepared by reacting a transition metal iodide with an alkali horate under mild hydrothermal conditions, drying the reaction product, and then hot pressing.

Babad, H.; Strachan, D.M.

1982-09-23T23:59:59.000Z

40

CO2 Capture with Enzyme Synthetic Analogue  

SciTech Connect (OSTI)

Project overview provides background on carbonic anhydrase transport mechanism for CO2 in the human body and proposed approach for ARPA-E project to create a synthetic enzyme analogue and utilize it in a membrane for CO2 capture from flue gas.

Harry Cordatos

2010-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive  

E-Print Network [OSTI]

1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat in air: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

Rollins, Andrew M.

42

SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive  

E-Print Network [OSTI]

1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET. It will produce irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

Rollins, Andrew M.

43

Synthetic fuel production by indirect coal liquefaction  

E-Print Network [OSTI]

Synthetic fuel production by indirect coal liquefaction Eric D. Larson Princeton Environmental@princeton.edu Ren Tingjin Department of Thermal Engineering, Tsinghua University, 100084 Beijing, China This paper reports detailed process designs and cost assessments for production of clean liquid fuels (methanol

44

IAC-Star: a Code for Synthetic Color-Magnitude Diagram Computation  

E-Print Network [OSTI]

The code IAC-star is presented. It generates synthetic HR and color-magnitude diagrams (CMDs) and is mainly aimed to star formation history studies in nearby galaxies. Composite stellar populations are calculated on a star by star basis, by computing the luminosity, effective temperature and gravity of each star by direct bi-logarithmic interpolation in the metallicity and age grid of a library of stellar evolution tracks. Visual (broad band and HST) and infrared magnitudes are also provided for each star after applying bolometric corrections. The Padua (Bertelli et al. 1994, Girardi et al. 2000) and Teramo (Pietrinferni et al. 2004) stellar evolution libraries and various bolometric corrections libraries are used in the current version. A variety of star formation rate functions, initial mass functions and chemical enrichment laws are allowed and binary stars can be computed. Although the main motivation of the code is the computation of synthetic CMDs, it also provides integrated masses, luminosities and magnitudes as well as surface brightness fluctuation luminosities and magnitudes for the total synthetic stellar population, and therefore it can also be used for population synthesis research. The code is offered for free use and can be executed at the site {\\tt http://iac-star.iac.es}, with the only requirement of referencing this paper and crediting as indicated in the site.

A. Aparicio; C. Gallart

2004-07-28T23:59:59.000Z

45

Feedback control of flow separation using synthetic jets  

E-Print Network [OSTI]

The primary goal of this research is to assess the effect of synthetic jets on flow separation and provide a feedback control strategy for flow separation using synthetic jets. The feedback control synthesis is conducted based upon CFD simulation...

Kim, Kihwan

2006-04-12T23:59:59.000Z

46

Aspects of the political economy of development and synthetic biology  

E-Print Network [OSTI]

What implications might synthetic biology’s potential as a wholly new method of production have for the world economy, particularly developing countries? Theories of political economy predict that synthetic biology can ...

Wellhausen, Rachel

47

Department of Mechanical Engineering Spring 2012 Synthetic Cable Termination  

E-Print Network [OSTI]

PENNSTATE Department of Mechanical Engineering Spring 2012 Synthetic Cable Termination Overview to be grasped. The methods for terminating the metallic cable will not work with the synthetic cable, so a new termination method is needed. The synthetic cable is a new design that has yet to be successfully terminated

Demirel, Melik C.

48

Numerical Methods for the Valuation of Synthetic Collateralized Debt Obligations  

E-Print Network [OSTI]

Numerical Methods for the Valuation of Synthetic Collateralized Debt Obligations by Xiaofang Ma Methods for the Valuation of Synthetic Collateralized Debt Obligations Xiaofang Ma Doctor of Philosophy methods for synthetic CDO valuation are presented. iii #12;Acknowledgements Although many people have

Toronto, University of

49

Composition and Biodegradation of a Synthetic Oil Spilled on the  

E-Print Network [OSTI]

-AN8) as well as a total of 27 L of hydraulic fluid MIL-5605 and synthetic turbine oil Aeroshell 500 in January 2003 on the 5 m-thick perennial ice cover of Lake Fryxell, spilling synthetic turbine oil et al. (9). Here, we compare the initial chemical composition of the synthetic turbine lubricant

Priscu, John C.

50

HUTTON ET. AL.: PARAMETERIZED GENERATION OF SYNTHETIC COMBINATIONAL BENCHMARK CIRCUITS 1 Characterization and Parameterized Generation of Synthetic  

E-Print Network [OSTI]

HUTTON ET. AL.: PARAMETERIZED GENERATION OF SYNTHETIC COMBINATIONAL BENCHMARK CIRCUITS 1 Characterization and Parameterized Generation of Synthetic Combinational Benchmark Circuits Michael D. Hutton placement and routing algorithms. In this paper, we present a method and a tool for generating parameterized

Rose, Jonathan

51

Production of synthetic hydrocarbon fuels from peat  

SciTech Connect (OSTI)

A process and apparatus for production of synthetic hydrocarbon fuels from peat providing wide variation of the composite proportion of liquid-gas output while maintaining high overall carbon conversion to useful fuel. The process and apparatus utilizes three process stages in a single vessel providing functions of drying wet peat, provisions for addition of both wet and dry peat to a hydropyrolysis zone and gasification of the peat char.

Bodle, W.W.; Punwani, D.; Weil, S.A.

1982-06-22T23:59:59.000Z

52

Flow control via synthetic jet actuation  

E-Print Network [OSTI]

4.1 Wind Tunnel Model Showing SJA Drive Through Acrylic Access Panel ..........41 4.2 Cross Section of Trailing Edge Showing Original Plenum Design .....................41 4.3 Cross Section of Trailing Edge Showing Narrow Plenum Design.... ...........................................................48 1 1. INTRODUCTION General This thesis presents a study of the effects of flow control on a NACA0015 airfoil using Synthetic Jet Actuators (SJA) at different locations along the chord. The purpose of this research was to show...

Miller, Adam Cole

2005-02-17T23:59:59.000Z

53

Radiance: Synthetic Imaging System | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, search RAPIDColoradosource History ViewRadiance: Synthetic Imaging System

54

Chemical Evolution  

E-Print Network [OSTI]

In this series of lectures we first describe the basic ingredients of galactic chemical evolution and discuss both analytical and numerical models. Then we compare model results for the Milky Way, Dwarf Irregulars, Quasars and the Intra-Cluster- Medium with abundances derived from emission lines. These comparisons allow us to put strong constraints on the stellar nucleosynthesis and the mechanisms of galaxy formation.

Francesca Matteucci

2007-04-05T23:59:59.000Z

55

Cross-linked structure of network evolution  

SciTech Connect (OSTI)

We study the temporal co-variation of network co-evolution via the cross-link structure of networks, for which we take advantage of the formalism of hypergraphs to map cross-link structures back to network nodes. We investigate two sets of temporal network data in detail. In a network of coupled nonlinear oscillators, hyperedges that consist of network edges with temporally co-varying weights uncover the driving co-evolution patterns of edge weight dynamics both within and between oscillator communities. In the human brain, networks that represent temporal changes in brain activity during learning exhibit early co-evolution that then settles down with practice. Subsequent decreases in hyperedge size are consistent with emergence of an autonomous subgraph whose dynamics no longer depends on other parts of the network. Our results on real and synthetic networks give a poignant demonstration of the ability of cross-link structure to uncover unexpected co-evolution attributes in both real and synthetic dynamical systems. This, in turn, illustrates the utility of analyzing cross-links for investigating the structure of temporal networks.

Bassett, Danielle S., E-mail: dsb@seas.upenn.edu [Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States); Department of Physics, University of California, Santa Barbara, California 93106 (United States); Sage Center for the Study of the Mind, University of California, Santa Barbara, California 93106 (United States); Wymbs, Nicholas F.; Grafton, Scott T. [Department of Psychology and UCSB Brain Imaging Center, University of California, Santa Barbara, California 93106 (United States)] [Department of Psychology and UCSB Brain Imaging Center, University of California, Santa Barbara, California 93106 (United States); Porter, Mason A. [Oxford Centre for Industrial and Applied Mathematics, Mathematical Institute, University of Oxford, Oxford OX2 6GG (United Kingdom) [Oxford Centre for Industrial and Applied Mathematics, Mathematical Institute, University of Oxford, Oxford OX2 6GG (United Kingdom); CABDyN Complexity Centre, University of Oxford, Oxford, OX1 1HP (United Kingdom); Mucha, Peter J. [Carolina Center for Interdisciplinary Applied Mathematics, Department of Mathematics, University of North Carolina, Chapel Hill, North Carolina 27599 (United States) [Carolina Center for Interdisciplinary Applied Mathematics, Department of Mathematics, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

2014-03-15T23:59:59.000Z

56

Further Analysis of Real Beam Line Optics From A Synthetic Beam  

SciTech Connect (OSTI)

Standard closed-orbit techniques for Twiss parameter measurement are not applicable to the open-ended Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. The evolution of selected sets of real orbits in the accelerator models the behavior of a 'synthetic' beam. This process will be validated against beam profile-based Twiss parameter measurements and should provide the distributed optical information needed to optimize beamline tuning for an open-ended system. This work will discuss the current and future states of this technique, as well as an example of its use in the CEBAF machine.

Ryan Bodenstein, Michael Tiefenback, Yves Roblin

2012-07-01T23:59:59.000Z

57

Micro/nanofabricated environments for synthetic biology  

SciTech Connect (OSTI)

A better understanding of how confinement, crowding and reduced dimensionality modulate reactivity and reaction dynamics will aid in the rational and systematic discovery of functionality in complex biological systems. Artificial micro- and nanofabricated structures have helped elucidate the effects of nanoscale spatial confinement and segregation on biological behavior, particularly when integrated with microfluidics, through precise control in both space and time of diffusible signals and binding interactions. Examples of nanostructured interfaces for synthetic biology include the development of cell-like compartments for encapsulating biochemical reactions, nanostructured environments for fundamental studies of diffusion, molecular transport and biochemical reaction kinetics, and regulation of biomolecular interactions as functions of micro- and nanofabricated topological constraints.

Collier, Pat [ORNL; Simpson, Michael L [ORNL

2011-01-01T23:59:59.000Z

58

Structural Characteristics of Synthetic Amorphous Calcium Carbonate  

SciTech Connect (OSTI)

Amorphous calcium carbonate (ACC) is an important phase involved in calcification by a wide variety of invertebrate organisms and is of technological interest in the development of functional materials. Despite widespread scientific interest in this phase a full characterization of structure is lacking. This is mainly due to its metastability and difficulties in evaluating structure using conventional structure determination methods. Here we present new findings from the application of two techniques, pair distribution function analysis and nuclear magnetic resonance spectroscopy, which provide new insight to structural aspects of synthetic ACC. Several important results have emerged from this study of ACC formed in vitro using two common preparation methods: (1) ACC exhibits no structural coherence over distances > 15 {angstrom} and is truly amorphous; (2) most of the hydrogen in ACC is present as structural H{sub 2}O, about half of which undergoes restricted motion on the millisecond time scale near room temperature; (3) the short- and intermediate-range structure of ACC shows no distinct match to any known structure in the calcium carbonate system; and (4) most of the carbonate in ACC is monodentate making it distinctly different from monohydrocalcite. Although the structure of synthetic ACC is still not fully understood, the results presented provide an important baseline for future experiments evaluating biogenic ACC and samples containing certain additives that may play a role in stabilization of ACC, crystallization kinetics, and final polymorph selection.

Michel, F. Marc; MacDonald, Jason; Feng, Jian; Phillips, Brian L.; Ehm, Lars; Tarabrella, Cathy; Parise, John B.; Reeder, Richard J. (SBU)

2008-08-06T23:59:59.000Z

59

Chemistry in Motion: Tiny Synthetic Motors  

E-Print Network [OSTI]

In this Account, we describe how synthetic motors that operate by self-diffusiophoresis make use of a self-generated concentration gradient to drive motor motion. A description of propulsion by self-diffusiophoresis is presented for Janus particle motors comprising catalytic and noncatalytic faces. The properties of the dynamics of chemically powered motors are illustrated by presenting the results of particle-based simulations of sphere-dimer motors constructed from linked catalytic and noncatalytic spheres. The geometries of both Janus and sphere-dimer motors with asymmetric catalytic activity support the formation of concentration gradients around the motors. Because directed motion can occur only when the system is not in equilibrium, the nature of the environment and the role it plays in motor dynamics are described. Rotational Brownian motion also acts to limit directed motion, and it has especially strong effects for very small motors. We address the following question: how small can motors be and still exhibit effects due to propulsion, even if only to enhance diffusion? Synthetic motors have the potential to transform the manner in which chemical dynamical processes are carried out for a wide range of applications.

Peter H. Colberg; Shang Yik Reigh; Bryan Robertson; Raymond Kapral

2014-11-03T23:59:59.000Z

60

Sorption-Enhanced Synthetic Natural Gas (SNG) Production from...  

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

Natural Gas (SNG) Production from Syngas: A Novel Process Combining CO Methanation, Water-Gas Shift, Sorption-Enhanced Synthetic Natural Gas (SNG) Production from Syngas: A Novel...

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

A Synthetic Biology Framework for Programming Eukaryotic Transcription Functions  

E-Print Network [OSTI]

Eukaryotic transcription factors (TFs) perform complex and combinatorial functions within transcriptional networks. Here, we present a synthetic framework for systematically constructing eukaryotic transcription functions ...

Khalil, Ahmad S.

62

US Synthetic Corp (TRL 4 Component) - The Development of Open...  

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

Polycrystalline Diamond Thrust Bearings for use in Marine Hydrokinetic (MHK) Energy Machines US Synthetic Corp (TRL 4 Component) - The Development of Open, Water Lubricated...

63

Synthetic nanotubes lay foundation for new technology: Artificial...  

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

Synthetic nanotubes lay foundation for new technology: Artificial pores mimic key features of natural pores By Tona Kunz * July 17, 2012 Tweet EmailPrint Scientists have overcome...

64

Vehicle Technologies Office Merit Review 2014: Synthetic Solutions...  

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

about synthetic solutions for correcting voltage fade in LMR-NMC cathodes. es190johnson2014o.pdf More Documents & Publications Cathode Synthesis and Voltage Fade: Designed...

65

Fusion: an energy source for synthetic fuels  

SciTech Connect (OSTI)

The decreasing availability of fossil fuels emphasizes the need to develop systems which will produce synthetic fuel to substitute for and supplement the natural supply. An important first step in the synthesis of liquid and gaseous fuels is the production of hydrogen. Thermonuclear fusion offers an inexhaustible source of energy for the production of hydrogen from water. Depending on design, electric generation efficiencies of approx. 40 to 60% and hydrogen production efficiencies by high temperature electrolysis of approx. 50 to 70% are projected for fusion reactors using high temperature blankets. Fusion/coal symbiotic systems appear economically promising for the first generation of commercial fusion synfuels plants. Coal production requirements and the environmental effects of large-scale coal usage would be greatly reduced by a fusion/coal system. In the long term, there could be a gradual transition to an inexhaustible energy system based solely on fusion.

Fillo, J A; Powell, J; Steinberg, M

1980-01-01T23:59:59.000Z

66

Performance limits for Synthetic Aperture Radar.  

SciTech Connect (OSTI)

The performance of a Synthetic Aperture Radar (SAR) system depends on a variety of factors, many which are interdependent in some manner. It is often difficult to ''get your arms around'' the problem of ascertaining achievable performance limits, and yet those limits exist and are dictated by physics, no matter how bright the engineer tasked to generate a system design. This report identifies and explores those limits, and how they depend on hardware system parameters and environmental conditions. Ultimately, this leads to a characterization of parameters that offer optimum performance for the overall SAR system. For example, there are definite optimum frequency bands that depend on weather conditions and range, and minimum radar PRF for a fixed real antenna aperture dimension is independent of frequency. While the information herein is not new to the literature, its collection into a single report hopes to offer some value in reducing the ''seek time''.

Doerry, Armin Walter

2006-02-01T23:59:59.000Z

67

analogue synthetics coumarins: Topics by E-print Network  

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

analogue synthetics coumarins First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Synthetic Analogues of...

68

Wave Evolution On the Evolution of Curvelets  

E-Print Network [OSTI]

Curvelets Wave Evolution On the Evolution of Curvelets by the Wave Equation Hart F. Smith of Curvelets by the Wave Equation #12;Curvelets Wave Evolution Curvelets and the Second Dyadic Decomposition Curvelets A curvelet frame {} is a wave packet frame on L2(R2) based on second dyadic decomposition. f

Smith, Hart F.

69

A Synthetic Resilin Is Largely Unstructured  

SciTech Connect (OSTI)

Proresilin is the precursor protein for resilin, an extremely elastic, hydrated, cross-linked insoluble protein found in insects. We investigated the secondary-structure distribution in solution of a synthetic proresilin (AN16), based on 16 units of the consensus proresilin repeat from Anopheles gambiae. Raman spectroscopy was used to verify that the secondary-structure distributions in cross-linked AN16 resilin and in AN16 proresilin are similar, and hence that solution techniques (such as NMR and circular dichroism) may be used to gain information about the structure of the cross-linked solid. The synthetic proresilin AN16 is an intrinsically unstructured protein, displaying under native conditions many of the characteristics normally observed in denatured proteins. There are no apparent {alpha}-helical or {beta}-sheet features in the NMR spectra, and the majority of backbone protons and carbons exhibit chemical shifts characteristic of random-coil configurations. Relatively few peaks are observed in the nuclear Overhauser effect spectra, indicating that overall the protein is dynamic and unstructured. The radius of gyration of AN16 corresponds to the value expected for a denatured protein of similar chain length. This high degree of disorder is also consistent with observed circular dichroism and Raman spectra. The temperature dependences of the NH proton chemical shifts were also measured. Most values were indicative of protons exposed to water, although smaller dependences were observed for glycine and alanine within the Tyr-Gly-Ala-Pro sequence conserved in all resilins found to date, which is the site of dityrosine cross-link formation. This result implies that these residues are involved in hydrogen bonds, possibly to enable efficient self-association and subsequent cross-linking. The {beta}-spiral model for elastic proteins, where the protein is itself shaped like a spring, is not supported by the results for AN16. Both the random-network elastomer model and the sliding {beta}-turn model are consistent with the data. The results indicate a flat energy landscape for AN16, with very little energy required to switch between conformations. This ease of switching is likely to lead to the extremely low energy loss on deformation of resilin.

Nairn, Kate M.; Lyons, Russell E.; Mulder, Roger J.; Mudie, Stephen T.; Cookson, David J.; Lesieur, Emmanuelle; Kim, Misook; Lau, Deborah; Scholes, Fiona H.; Elvin, Christopher M. (CSIRO/MSE); (CSIRO/MHT); (CSIRO/LI); (Aust. Synch.)

2008-11-03T23:59:59.000Z

70

Synthetic aperture radar processing with tiered subapertures  

SciTech Connect (OSTI)

Synthetic Aperture Radar (SAR) is used to form images that are maps of radar reflectivity of some scene of interest, from range soundings taken over some spatial aperture. Additionally, the range soundings are typically synthesized from a sampled frequency aperture. Efficient processing of the collected data necessitates using efficient digital signal processing techniques such as vector multiplies and fast implementations of the Discrete Fourier Transform. Inherent in image formation algorithms that use these is a trade-off between the size of the scene that can be acceptably imaged, and the resolution with which the image can be made. These limits arise from migration errors and spatially variant phase errors, and different algorithms mitigate these to varying degrees. Two fairly successful algorithms for airborne SARs are Polar Format processing, and Overlapped Subaperture (OSA) processing. This report introduces and summarizes the analysis of generalized Tiered Subaperture (TSA) techniques that are a superset of both Polar Format processing and OSA processing. It is shown how tiers of subapertures in both azimuth and range can effectively mitigate both migration errors and spatially variant phase errors to allow virtually arbitrary scene sizes, even in a dynamic motion environment.

Doerry, A.W. [Sandia National Labs., Albuquerque, NM (United States). Synthetic Aperture Radar Dept.

1994-06-01T23:59:59.000Z

71

Motion Measurement for Synthetic Aperture Radar.  

SciTech Connect (OSTI)

Synthetic Aperture Radar (SAR) measures radar soundings from a set of locations typically along the flight path of a radar platform vehicle. Optimal focusing requires precise knowledge of the sounding source locations in 3 - D space with respect to the target scene. Even data driven focusing techniques (i.e. autofocus) requires some degree of initial fidelity in the measurements of the motion of the radar. These requirements may be quite stringent especially for fine resolution, long ranges, and low velocities. The principal instrument for measuring motion is typically an Inertial Measurement Unit (IMU), but these instruments have inherent limi ted precision and accuracy. The question is %22How good does an IMU need to be for a SAR across its performance space?%22 This report analytically relates IMU specifications to parametric requirements for SAR. - 4 - Acknowledgements Th e preparation of this report is the result of a n unfunded research and development activity . Although this report is an independent effort, it draws heavily from limited - release documentation generated under a CRADA with General Atomics - Aeronautical System, Inc. (GA - ASI), and under the Joint DoD/DOE Munitions Program Memorandum of Understanding. Sandia National Laboratories is a multi - program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of En ergy's National Nuclear Security Administration under contract DE - AC04 - 94AL85000.

Doerry, Armin W.

2015-01-01T23:59:59.000Z

72

Naphthenic acid corrosion in synthetic fuels production  

SciTech Connect (OSTI)

Serious corrosion damage to carbon steel piping in a fractionation unit associated with synthetic fuels production has been ascribed to the presence of naphthenic acids. Investigation of the problem revealed total acids numbers (TAN) ranging from 8--12mg KOH/g in the feed to the unit. Damage typically occurred in the temperature range 180--240 C and manifested as localized pitting, preferential weld corrosion, general wall thinning and end-grain attack. Filming amine corrosion inhibitors designed for refinery overhead systems have been proven ineffective and high temperature phosphate-based inhibitors could not be used due to potential catalyst poisoning in downstream refinery units. Coupon exposures indicated corrosion rates in the order of 2 mm/y on carbon steel in a reboiler line as well as pitting to austenitic stainless steel type UNS S30403. Line replacement in austenitic stainless steel UNS S31603 has been proven effective. The performance of this alloy is mainly ascribed to its molybdenum content. The absence of sulfur in the feed to the unit is also contributing to the alloy performance despite the extremely high total acid numbers.

Bruyn, H.I. de [Mossgas Ltd., Mossel Bay (South Africa)

1998-12-31T23:59:59.000Z

73

Ultrafast thermally induced magnetic switching in synthetic ferrimagnets  

SciTech Connect (OSTI)

Synthetic ferrimagnets are composite magnetic structures formed from two or more anti-ferromagnetically coupled magnetic sublattices with different magnetic moments. Here, we report on atomistic spin simulations of the laser-induced magnetization dynamics on such synthetic ferrimagnets and demonstrate that the application of ultrashort laser pulses leads to sub-picosecond magnetization dynamics and all-optical switching in a similar manner as in ferrimagnetic alloys. Moreover, we present the essential material properties for successful laser-induced switching, demonstrating the feasibility of using a synthetic ferrimagnet as a high density magnetic storage element without the need of a write field.

Evans, Richard F. L., E-mail: richard.evans@york.ac.uk; Ostler, Thomas A.; Chantrell, Roy W. [Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom); Radu, Ilie [Institut für Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin (Germany); Rasing, Theo [Radboud University, Institute for Molecules and Materials, Heyendaalsewg 135, 6525 AJ Nijmegen (Netherlands)

2014-02-24T23:59:59.000Z

74

Synthetic Nano-Low Density Lipoprotein as Targeted Drug Delivery Vehicle for Glioblastoma Multiforme  

E-Print Network [OSTI]

Synthetic Nano-Low Density Lipoprotein as Targeted Drugmicroemulsion; peptide; nano-low density lipoproteintherapeutic agents. A synthetic nano-LDL (nLDL) particle was

Nikanjam, Mina; Blakely, Eleanor A.; Bjornstad, Kathleen A.; Shu, Xiao; Budinger, Thomas F.; Forte, Trudy M.

2006-01-01T23:59:59.000Z

75

Computational optimization of synthetic water channels.  

SciTech Connect (OSTI)

Membranes for liquid and gas separations and ion transport are critical to water purification, osmotic energy generation, fuel cells, batteries, supercapacitors, and catalysis. Often these membranes lack pore uniformity and robustness under operating conditions, which can lead to a decrease in performance. The lack of uniformity means that many pores are non-functional. Traditional membranes overcome these limitations by using thick membrane materials that impede transport and selectivity, which results in decreased performance and increased operating costs. For example, limitations in membrane performance demand high applied pressures to deionize water using reverse osmosis. In contrast, cellular membranes combine high flux and selective transport using membrane-bound protein channels operating at small pressure differences. Pore size and chemistry in the cellular channels is defined uniformly and with sub-nanometer precision through protein folding. The thickness of these cellular membranes is limited to that of the cellular membrane bilayer, about 4 nm thick, which enhances transport. Pores in the cellular membranes are robust under operating conditions in the body. Recent efforts to mimic cellular water channels for efficient water deionization produced a significant advance in membrane function. The novel biomimetic design achieved a 10-fold increase in membrane permeability to water flow compared to commercial membranes and still maintained high salt rejection. Despite this success, there is a lack of understanding about why this membrane performs so well. To address this lack of knowledge, we used highperformance computing to interrogate the structural and chemical environments experienced by water and electrolytes in the newly created biomimetic membranes. We also compared the solvation environments between the biomimetic membrane and cellular water channels. These results will help inform future efforts to optimize and tune the performance of synthetic biomimetic membranes for applications in water purification, energy, and catalysis.

Rogers, David Michael; Rempe, Susan L. B.

2012-12-01T23:59:59.000Z

76

What is Synthetic Biology? Application of engineering principles  

E-Print Network [OSTI]

to the design and construction of biological parts, devices, and systems with applications in energy, medicine;Biofuels from Algae CO -neutral2 1,000,000 gallons in 2008 18 #12;Synthetic Biology Biochemistry

Campbell, A. Malcolm

77

Synthetic polypeptide-based hydrogel systems for biomaterials  

E-Print Network [OSTI]

Hydrogels formed from synthetic polypeptides generated by ring opening polymerization (ROP) of a-amino acid N-carboxyanhydrides (NCAs) present a robust material for modeling the interaction between extracellular matrix ...

Martin, Mackenzie Marie

2014-01-01T23:59:59.000Z

78

applied synthetic auxin: Topics by E-print Network  

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

within bacteria in order to fine-tune the expression of BioBrick parts and devices. Fortuna, Patrick 2010-12-04 112 Synthesizing Law for Synthetic Biology University of Kansas -...

79

Synthetic scaffolds and protein assemblies for engineering applications  

E-Print Network [OSTI]

S-layer proteins, which naturally self-assemble on the exterior of cells, provide an interesting basis for the creation of synthetic scaffolds. In this thesis, I created a plasmid which produces a recombinant form of a ...

Norville, Julie Erin, 1980-

2004-01-01T23:59:59.000Z

80

Retroactivity, modularity, and insulation in synthetic biology circuits  

E-Print Network [OSTI]

A central concept in synthetic biology is the reuse of well-characterized modules. Modularity simplifies circuit design by allowing for the decomposition of systems into separate modules for individual construction. Complex ...

Lin, Allen

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

What rough beast? Synthetic Biology and the Future of Biosecurity  

E-Print Network [OSTI]

Synthetic biology seeks to create modular biological parts that can be assembled into useful devices, allowing the modification of biological systems with greater reliability, at lower cost, with greater speed, and by a ...

Mohr, Scott C.

82

Synthetic strategies for the design of platinum anticancer drug candidates  

E-Print Network [OSTI]

Chapter 1. The Synthetic Chemistry of Platinum Anticancer Agents Since the inception of cisplatin as a clinically approved anticancer agent, a large number of platinum compounds have been synthesized with the aim of finding ...

Wilson, Justin Jeff

2013-01-01T23:59:59.000Z

83

Synthetic environment employing a craft for providing user perspective reference  

DOE Patents [OSTI]

A multi-dimensional user oriented synthetic environment system allows application programs to be programmed and accessed with input/output device independent, generic functional commands which are a distillation of the actual functions performed by any application program. A shared memory structure allows the translation of device specific commands to device independent, generic functional commands. Complete flexibility of the mapping of synthetic environment data to the user is thereby allowed. Accordingly, synthetic environment data may be provided to the user on parallel user information processing channels allowing the subcognitive mind to act as a filter, eliminating irrelevant information and allowing the processing of increase amounts of data by the user. The user is further provided with a craft surrounding the user within the synthetic environment, which craft, imparts important visual referential an motion parallax cues, enabling the user to better appreciate distances and directions within the synthetic environment. Display of this craft in close proximity to the user's point of perspective may be accomplished without substantially degrading the image resolution of the displayed portions of the synthetic environment.

Maples, Creve (Albuquerque, NM); Peterson, Craig A. (Albuquerque, NM)

1997-10-21T23:59:59.000Z

84

2006 Nature Publishing Group Deciphering the evolution and metabolism of an  

E-Print Network [OSTI]

become a main focus in oceanography and wastewater treatment1,2 . It is also the nitrogen cycle's major and allow us to expose the genetic blueprint of the organism's special properties. Most significantly, we and evolution of these important bacteria. A laboratory bioreactor, anoxic and fed with synthetic wastewater

Cai, Long

85

Chemical evolution STRUCTURE OF GALAXIES  

E-Print Network [OSTI]

Outline Absorption Chemical evolution STRUCTURE OF GALAXIES 8. Absorption; chemical evolution Piet Piet van der Kruit, Kapteyn Astronomical Institute Absorption; chemical evolution #12;Outline Absorption Chemical evolution Outline Absorption Holmberg's analysis Analysis of Disney et al. Edge

Kruit, Piet van der

86

Dual chain synthetic heparin-binding growth factor analogs  

DOE Patents [OSTI]

The invention provides synthetic heparin-binding growth factor analogs having two peptide chains each branched from a branch moiety, such as trifunctional amino acid residues, the branch moieties separated by a first linker of from 3 to about 20 backbone atoms, which peptide chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a second linker, which may be a hydrophobic second linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

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

2012-04-24T23:59:59.000Z

87

Dual chain synthetic heparin-binding growth factor analogs  

DOE Patents [OSTI]

The invention provides synthetic heparin-binding growth factor analogs having two peptide chains each branched from a branch moiety, such as trifunctional amino acid residues, the branch moieties separated by a first linker of from 3 to about 20 backbone atoms, which peptide chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a second linker, which may be a hydrophobic second linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

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

2009-10-06T23:59:59.000Z

88

Evaluation of synthetic aggregates for use in concrete  

E-Print Network [OSTI]

of synthetic aggregates may result in 4 irregular aggrege. te behavior with respect to those test procedures. Investigators at the Texas Transportation Institute have sug- g sted some new r. echniques to evaluate the synthet. ic ageregate. Some... in firing temperature and retention t5me, although pressure s1aking losses of all ag, regates were very low which indicated that the dehydration process of all aggro ates wa complete. 11. The NuOH test was able to detect the vari. ation of aggre- gate...

Ahmad, Hafizuddin

1970-01-01T23:59:59.000Z

89

Synthetic fuel concept to steal CO2 from air  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAbout »LabSustainabilitySynthetic fuel concept Synthetic

90

September 16, 2011 Synthetic Biology Leads to Organic Learning  

E-Print Network [OSTI]

principles and mathematical modeling to the design and construction of biological parts, devices, and systems with applications in energy, medicine, and technology. www.bio.davidson -neutral2 1,000,000 gallons in 2008 #12;Synthetic Biology at Davidson College Building Bacterial Computers

Campbell, A. Malcolm

91

Progress in the Advanced Synthetic-Diamond Drill Bit Program  

SciTech Connect (OSTI)

Cooperative research is currently underway among five drill bit companies and Sandia National Laboratories to improve synthetic-diamond drill bits for hard-rock applications. This work, sponsored by the US Department of Energy and individual bit companies, is aimed at improving performance and bit life in harder rock than has previously been possible to drill effectively with synthetic-diamond drill bits. The goal is to extend to harder rocks the economic advantages seen in using synthetic-diamond drill bits in soft and medium rock formations. Four projects are being conducted under this research program. Each project is investigating a different area of synthetic diamond bit technology that builds on the current technology base and market interests of the individual companies involved. These projects include: optimization of the PDC claw cutter; optimization of the Track-Set PDC bit; advanced TSP bit development; and optimization of impregnated-diamond drill bits. This paper describes the progress made in each of these projects to date.

Glowka, D.A. [Sandia National Labs., Albuquerque, NM (United States); Dennis, T. [Dennis Tool Co., Houston, TX (United States); Le, Phi [Security DBS, Houston, TX (United States); Cohen, J. [Maurer Engineering, Inc., Houston, TX (United States); Chow, J. [Hughes Christensen Co., Salt Lake City, UT (United States)

1995-11-01T23:59:59.000Z

92

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

93

Factors Contributing to Petroleum Foaming. 2. Synthetic Crude Oil Systems  

E-Print Network [OSTI]

to the petroleum industry. Nonaqueous foams occur in the production of and refining of crude oil. Crude oil foamsFactors Contributing to Petroleum Foaming. 2. Synthetic Crude Oil Systems Nael N. Zaki, Michael K can pose major problems for operators of gas/oil separation plants, causing a loss of crude

Kilpatrick, Peter K.

94

Defossiling Fuel: How Synthetic Biology Can Transform Biofuel Production  

E-Print Network [OSTI]

Defossiling Fuel: How Synthetic Biology Can Transform Biofuel Production David F. Savage , Jeffrey production is pre- dicted to peak soon, it is reason- able to assume that unconventional fossil fuel sources and economic energy volatility, and smoothing the transition from fossil fuels in the distant future

95

Synthetic Aperture Radar Imaging with Motion Estimation and Liliana Borcea  

E-Print Network [OSTI]

Callaghan George Papanicolaou Abstract We introduce from first principles a synthetic aperture radar (SAR calibrated small apertures, (b) preliminary motion estimation from the data using the Wigner transform-band persistent surveillance SAR is a specific application that is covered by our analysis. Detailed numerical

Papanicolaou, George C.

96

Synthetic aperture design for increased SAR image rate  

DOE Patents [OSTI]

High resolution SAR images of a target scene at near video rates can be produced by using overlapped, but nevertheless, full-size synthetic apertures. The SAR images, which respectively correspond to the apertures, can be analyzed in sequence to permit detection of movement in the target scene.

Bielek, Timothy P. (Albuquerque, NM); Thompson, Douglas G. (Albuqerque, NM); Walker, Bruce C. (Albuquerque, NM)

2009-03-03T23:59:59.000Z

97

USING SYNTHETIC PLAYERS TO GENERATE WORKLOADS FOR NETWORKED MULTIPLAYER GAMES  

E-Print Network [OSTI]

that generates appropriate workloads for networked multiplayer games. Based on this framework, we have developed a software infrastructure and a prototype synthetic player for the multiplayer adventure game Crossfire Video games have been projected to continue to enjoy solid growth over the coming years (PricewaterhouseCoopers

Katchabaw, Michael James

98

Engineering microbial consortia: a new frontier in synthetic biology  

E-Print Network [OSTI]

Engineering microbial consortia: a new frontier in synthetic biology Katie Brenner1 , Lingchong You and endure more changeable environments than monocultures can, they represent an important new frontier generated many examples of what microbes can do and what we can learn from them [6­11] when

Arnold, Frances H.

99

SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale  

E-Print Network [OSTI]

SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale M. O. Eshkalak, SPE, S. D of hydrocarbons from the reservoirs, notably shale, is attributed to realizing the key fundamentals of reservoir and mineralogy is crucial in order to identify the "right" pay-zone intervals for shale gas production. Also

Mohaghegh, Shahab

100

What determines galactic evolution?  

E-Print Network [OSTI]

We are briefly introducing the most important ingredients to study galactic evolution. In particular the roles of star formation, nucleosynthesis and gas flows. Then we are discussing the two different approaches to galactic evolution: the stellar population approach (chemical evolution models) and the hierarchical clustering scenario for galaxy formation. It is shown that there are still some controversial points in the two approaches, as evident in the brief summary of the discussion.

Francesca Matteucci

2002-10-24T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Nanofabricated collagen-inspired synthetic elastomers for primary rat hepatocyte culture  

E-Print Network [OSTI]

Synthetic substrates that mimic the properties of extracellular matrix proteins hold significant promise for use in systems designed for tissue engineering applications. In this report, we designed a synthetic polymeric ...

Bettinger, Christopher J.

102

Safe, secure and ethical? : assessing and regulating risks associated with synthetic biology  

E-Print Network [OSTI]

Synthetic biology is an emerging field, with a rapidly developing academic-industrial base and the promise of extensive product launches over the next few years. An intense debate over the risks and benefits of synthetic ...

Regårdh, Pernilla C. (Pernilla Christina)

2011-01-01T23:59:59.000Z

103

Synthetic Hexaploid Wheat as a Source of Improvement for Winter Wheat (Triticum aestivum L.) in Texas  

E-Print Network [OSTI]

of this research was to evaluate the potential and performance of synthetic wheat in Texas. Ten elite primary synthetics from the International Maize and Wheat Improvement Center (CIMMYT), screened for desirable traits, were backcrossed to two Texas cultivars, TAM...

Cooper, Jessica Kay

2012-02-14T23:59:59.000Z

104

Modular Design of Artificial Tissue Homeostasis: Robust Control through Synthetic Cellular Heterogeneity  

E-Print Network [OSTI]

Synthetic biology efforts have largely focused on small engineered gene networks, yet understanding how to integrate multiple synthetic modules and interface them with endogenous pathways remains a challenge. Here we present ...

Miller, Miles Aaron

105

Characteristic Evolution and Matching  

E-Print Network [OSTI]

I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to current 3D black codes that simulate binary black holes. A prime application of characteristic evolution is Cauchy-characteristic matching, which is also reviewed.

J. Winicour

2001-02-22T23:59:59.000Z

106

Method and apparatus for removing heat from electronic devices using synthetic jets  

DOE Patents [OSTI]

An apparatus for removing heat comprises a heat sink having a cavity, and a synthetic jet stack comprising at least one synthetic jet mounted within the cavity. At least one rod and at least one engaging structure to provide a rigid positioning of the at least one synthetic jet with respect to the at least one rod. The synthetic jet comprises at least one orifice through which a fluid is ejected.

Sharma, Rajdeep; Weaver, Jr., Stanton Earl; Seeley, Charles Erklin; Arik, Mehmet; Icoz, Tunc; Wolfe, Jr., Charles Franklin; Utturkar, Yogen Vishwas

2014-04-15T23:59:59.000Z

107

Renewable Energy from Synthetic Biology (LBNL Science at the Theater)  

ScienceCinema (OSTI)

Jay Keasling, co-leader of Berkeley Lab's Helios Project, is a groundbreaking researcher in the new scientific field of synthetic biology. In Helios, he directs the biology program, incorporating a range of approaches to increasing the efficacy and economy of plants and cellulose-degrading microbes to make solar-based fuels. He is a UC Berkeley professor of Chemical and Bioengineering, and founder of Amyris Biotechnologies, a company that was honored as a Technology Pioneer for 2006 by the World Economic Forum. Keasling has succeeded in using synthetic biology to develop a yeast-based production scheme for precursors of the antimalarial drug artemisinin in work funded by the Bill & Melinda Gates Foundation.

Keasling, Jay

2011-04-28T23:59:59.000Z

108

Bringing Standards to Life: Synthetic Biology Standards and Intellectual Property  

E-Print Network [OSTI]

); Joachim Henckel & Stephen M. Maurer, The Economics of Synthetic Biology, MOL. SYST. BIOL., June 5, 2007, available at http://www.nature.com/msb/journal/v3/n1/full/msb4100161.html; David Cohn, Open-Source Biology Evolves, WIRED (Jan. 17, 2005), http... different genetic contexts.55 Other tools that help rationally Linton et al., Translocation of Green F luorescent Protein by Comparative Analysis with Multiple Signal Peptides, 7 BIOTECHNOL. J. 667 (2012); Raul Cuero, J. Lilly & David S. Mc...

Torrance, Andrew W.; Kahl, Linda

2014-01-01T23:59:59.000Z

109

Pentavalent Uranium Chemistry - Synthetic Pursuit Of A Rare Oxidation State  

SciTech Connect (OSTI)

This feature article presents a comprehensive overview of pentavalent uranium systems in non-aqueous solution with a focus on the various synthetic avenues employed to access this unusual and very important oxidation state. Selected characterization data and theoretical aspects are also included. The purpose is to provide a perspective on this rapidly evolving field and identify new possibilities for future developments in pentavalent uranium chemistry.

Graves, Christopher R [Los Alamos National Laboratory; Kiplinger, Jaqueline L [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

110

Formulation of soluble oils with synthetic and petroleum sulfonates  

SciTech Connect (OSTI)

Metalworking fluids for metal removal are formulated to provide cooling, lubrication, and rust protection when cutting and machining metals. There are basically four types of cutting fluids: straight oils, synthetics, semisynthetic fluids and soluble oils. The last type is the most widely used for metal removal operations such as cutting, drilling and grinding. Soluble oils used for metalworking operations are normally the oil-in-water type, with oil as the internal phase and water as the external phase. The soluble oils can have rather complex compositions, usually containing two or more emulsifiers and coupling agents, as well as additives to provide rust inhibition, lubricity, detergency, resistance to bacterial attack and foam control. The dominant emulsifier in a soluble oil is usually sodium sulfonate which also has the secondary benefit of being a rust inhibitor. Soluble oil emulsions based on petroleum or synthetic sulfonates have been found to improve lubrication and cleaning of metal parts and equipment. As has been done previously, a series of emulsification studies were conducted using petroleum and synthetic sulfonates. Emulsifier level, coemulsifiers and minor formulation adjustments were made to optimize each system. This study was made using naphthenic oil basestock. Formulations were evaluated using criteria including concentrate stability, hard and soft water emulsion stability, emulsibility, foaming tendency and response to defoamers, antirust properties and cost effectiveness of individual formulations. The results of these evaluations are presented in the present paper.

Eckard, A.; Riff, I.; Weaver, J. [Witco Corp., Oakland, NJ (United States)

1997-06-01T23:59:59.000Z

111

Method for producing and regenerating a synthetic CO[sub 2] acceptor  

DOE Patents [OSTI]

A method is described for producing a synthetic CO[sub 2] acceptor by feeding a mixture of finely divided silica and at least one finely divided calcium compound selected from the group consisting of calcium oxide and calcium carbonate to a fluidized bed; operating the fluidized bed at suitable conditions to produce pellets of synthetic CO[sub 2] acceptor and recovering the pellets of synthetic CO[sub 2] acceptor from the fluidized bed. Optionally, spent synthetic CO[sub 2] acceptor can be charged to the fluidized bed to produce regenerated pellets of synthetic CO[sub 2] acceptor. 1 fig.

Lancet, M. S.; Curran, G. P.; Gorin, E.

1982-05-18T23:59:59.000Z

112

Method for producing and regenerating a synthetic CO.sub.2 acceptor  

DOE Patents [OSTI]

A method for producing a synthetic CO.sub.2 acceptor by feeding a mixture of finely divided silica and at least one finely divided calcium compound selected from the group consisting of calcium oxide and calcium carbonate to a fluidized bed; operating the fluidized bed at suitable conditions to produce pellets of synthetic CO.sub.2 acceptor and recovering the pellets of synthetic CO.sub.2 acceptor from the fluidized bed. Optionally, spent synthetic CO.sub.2 acceptor can be charged to the fluidized bed to produce regenerated pellets of synthetic CO.sub.2 acceptor.

Lancet, Michael S. (Pittsburgh, PA); Curran, George P. (Pittsburgh, PA); Gorin, Everett (San Rafael, CA)

1982-01-01T23:59:59.000Z

113

The Evolution of War  

E-Print Network [OSTI]

Viking. Keeley, Lawrence. 1996. War Before Civilization. NewSocieties and the Origins of War. Ann Arbor: University ofPress. Morris: Evolution of War. Cliodynamics (2012) Vol. 3,

Morris, Ian

2012-01-01T23:59:59.000Z

114

Evolution of birds uncovered  

E-Print Network [OSTI]

Evolution of birds uncovered 1998 Improved treatments for Parkinson's disease 2005 Smallpox-patented sewing machine 1851 Inaugural issue of Scientific American published 1845 1950 Solar power: ways to use

Cai, Long

115

The time as an emergent property of quantum mechanics, a synthetic description of a first experimental approach  

E-Print Network [OSTI]

The "problem of time" in present physics substantially consists in the fact that a straightforward quantization of the general relativistic evolution equation and constraints generates for the Universe wave function the Wheeler-De Witt equation, which describes a static Universe. Page and Wootters considered the fact that there exist states of a system composed by entangled subsystems that are stationary, but one can interpret the component subsystems as evolving: this leads them to suppose that the global state of the universe can be envisaged as one of this static entangled state, whereas the state of the subsystems can evolve. Here we synthetically present an experiment, based on PDC polarization entangled photons, that allows showing with a practical example a situation where this idea works, i.e. a subsystem of an entangled state works as a "clock" of another subsystem.

E Moreva; G Brida; M Gramegna; V Giovannetti; L Maccone; M Genovese

2015-02-11T23:59:59.000Z

116

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production  

SciTech Connect (OSTI)

This report presents and discusses results from the project 'Fate of Mercury in Synthetic Gypsum Used for Wallboard Production', performed at five different full-scale commercial wallboard plants. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies involve the capture of mercury in FGD systems. The objective of this study has been to determine whether any mercury is released into the atmosphere at wallboard manufacturing plants when the synthetic gypsum material is used as a feedstock for wallboard production. The project has been co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope included seven discrete tasks, each including a test conducted at various USG wallboard plants using synthetic gypsum from different wet FGD systems. The project was originally composed of five tasks, which were to include (1) a base-case test, then variations representing differing power plant: (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5,could not be conducted as planned and instead was conducted at conditions similar to Task 3. Subsequently an opportunity arose to test gypsum produced from the Task 5 FGD system, but with an additive expected to impact the stability of mercury, so Task 6 was added to the project. Finally, Task 7 was added to evaluate synthetic gypsum produced at a power plant from an additional coal type. In the project, process stacks in the wallboard plant were sampled using the Ontario Hydro method. In every task, the stack locations sampled included a gypsum dryer and a gypsum calciner. In Tasks 1 and 4 through 7, the stack of the dryer for the wet wallboard product was also tested. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. These results and process data were used to construct mercury mass balances across the wallboard plants. The results from the project showed a wide range of percentage mercury losses from the synthetic gypsum feedstocks as measured by the Ontario Hydro method at the process stacks, ranging from 2% to 55% of the mercury in the gypsum feedstock. For the tasks exceeding 10% mercury loss across the wallboard plant, most of the loss occurred across the gypsum calciner. When total wallboard emissions remained below 10%, the primary emission location varied with a much less pronounced difference in emission between the gypsum dryer, calciner and board dryer. For all seven tasks, the majority of the mercury emissions were measured to be in the elemental form (Hg{sup 0}). Overall, the measured mercury loss mass rates ranged from 0.01 to 0.17 grams of mercury per dry ton of synthetic gypsum processed, or 0.01 to 0.4 pounds of mercury released per million square feet of wallboard produced from synthetic gypsum. The Coal Combustion Product Production and Use Survey from the American Coal Ash Association (ACAA) indicate that 7,579,187 short tons of synthetic gypsum were used for wallboard production in 2006. Extrapolating the results of this study to the ACAA industry usage rate, we estimate that mercury releases from wallboard production plants in 2006 ranged between 150 to 3000 pounds for the entire U.S. wallboard industry. With only seven sets of wallboard plant measurements, it is difficult to draw firm conclusions about what variables impact the mercury loss percentages across the wallboard plants. One significant o

Jessica Sanderson

2007-12-31T23:59:59.000Z

117

Synthetic muscle developed with PPPL scientists' help ready for launch |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAbout »LabSustainabilitySynthetic fuel concept

118

Synthetic fuels from peat: state-of-the-art review  

SciTech Connect (OSTI)

The world has significant resources of peat. Total energy contained in these resources is estimated to be equivalent to over 1800 billion barrels of oil. Peat has been used extensively in Europe and Russia for years as a source of energy. In the United States, where peat resources are estimated at equivalent to 240 billion barrels of oil, peat is not used commercially as a source of energy. In 1974, the Institute of Gas Technology (IGT) initiated peat gasification research under the sponsorship of the Minnesota Gas Company (Minnegasco). The results of that work, continued at IGT under the sponsorship of the US Department of Energy (DOE) and Minnegasco, show that on the basis of chemistry and kinetics, peat is a better raw material for making synthetic fuels than coal. This paper reviews the state-of-the-art of the total system of taking peat from the ground and converting it to synthetic fuels. This system incorporates subsystems on harvesting, dewatering, and conversion processes. The world peat resources and environmental effects on large-scale peat utilization are also reviewed.

Punwani, D.V.

1980-01-01T23:59:59.000Z

119

A comparison of spotlight synthetic aperture radar image formation techniques  

SciTech Connect (OSTI)

Spotlight synthetic aperture radar images can be formed from the complex phase history data using two main techniques: (1) polar-to-cartesian interpolation followed by two-dimensional inverse Fourier transform (2DFFT), and (2) convolution backprojection (CBP). CBP has been widely used to reconstruct medical images in computer aided tomography, and only recently has been applied to form synthetic aperture radar imagery. It is alleged that CBP yields higher quality images because (1) all the Fourier data are used and (2) the polar formatted data is used directly to form a 2D Cartesian image and therefore 2D interpolation is not required. This report compares the quality of images formed by CBP and several modified versions of the 2DFFT method. We show from an image quality point of view that CBP is equivalent to first windowing the phase history data and then interpolating to an exscribed rectangle. From a mathematical perspective, we should expect this conclusion since the same Fourier data are used to form the SAR image. We next address the issue of parallel implementation of each algorithm. We dispute previous claims that CBP is more readily parallelizable than the 2DFFT method. Our conclusions are supported by comparing execution times between massively parallel implementations of both algorithms, showing that both experience similar decreases in computation time, but that CBP takes significantly longer to form an image.

Knittle, C.D.; Doren, N.E.; Jakowatz, C.V.

1996-10-01T23:59:59.000Z

120

Spatially Interpolated Nonlinear Anodization in Synthetic Aperture Radar Imagery  

SciTech Connect (OSTI)

Spatially Interpolated Nonlinear Anodization in Synthetic Aperture Original formulation of spatially variant anodization for complex synthetic aperture radar (SAR) imagery oversampled at twice the Nyquist rate (2.OX). Here we report a spatially interpolating, noninteger-oversampled SVA sidelobe. The pixel's apparent IPR location is assessed by comparing its value to the sum of its value plus weighted comparable for exact interpolation. However, exact interpolation implies an ideal sine interpolator3 and large components may not be necessary. Note that P is the summation of IPR diagonal values. The value of a sine IPR on the diagonals is a sine-squared; values much less than cardinal direction (m, n) values. This implies that cardinal direction interpolation requires higher precision than diagonal interpolation. Consequently, we employed a smaller set. The spatially interpolated SVA used an 8-point/4-point sine interpolator described above. Table 1 shows the Table 1 results show a two-times speed-up using the 1.3x oversampled and spatially interpolated SVA over the Figure 1d. Detected results of 1.3x oversampled sine interpolated spatially variant

Eichel, Paul H.; Jakowatz, Jr., Charles V.; Yocky, David A.

1999-06-29T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Economical utilization of natural gas to produce synthetic petroleum liquids  

SciTech Connect (OSTI)

A new process for converting pipeline quality or subquality natural gas into liquid fuels and other petroleum products is described. The technology, developed by Syntroleum Corporation, utilizes autothermal reforming with air to produce a nitrogen-diluted synthesis gas having a near ideal ratio for converting into synthetic hydrocarbons via Fischer-Tropsch (F-T) synthesis. A proprietary F-T catalyst system, designed to operate in a nitrogen-diluted atmosphere, achieves conversion rates comparable to conventional F-T processes without the need for recycle and the associated recompression equipment. This results in potential plant capital costs low enough to make conversion of remote and or subquality gas into synthetic fuels economical, based on current oil prices. The process is energy self-sufficient and compact enough to be constructed in 5,000 to 10,000 b/d plants on floating or platform facilities to utilize offshore gas reserves. The liquid fuels produced by the process are free of sulfur and aromatics. The process has been demonstrated at pilot-scale. Numerous engineering studies and cost estimates have been conducted to provide the information needed for economic evaluation and confident scale-up. This paper also outlines improvements to the process currently under development and how the process presents new opportunities for gas processors.

Agee, K.L.; Agee, M.A. [Syntroleum Corp., Tulsa, OK (United States); Willingham, F.Y.; Trepper, E.L. [Bateman Engineering, Inc., Denver, CO (United States)

1996-12-31T23:59:59.000Z

122

Reduction of NOx in Synthetic Diesel Exhaust via Two-Step Plasma...  

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

Citation: Tonkyn RG, SE Barlow, and J Hoard.2003."Reduction of NOx in Synthetic Diesel Exhaust via Two-Step Plasma-Catalysis Treatment."Applied Catalysis. B,...

123

HE3286, an oral synthetic steroid, treats lung inflammation in mice without immune suppression  

E-Print Network [OSTI]

implications for therapy. Treat Respir Med 2004, 3:147-59.as a potential agent to treat autoimmune diseases. Autoimmunan oral synthetic steroid, treats lung inflammation in mice

2010-01-01T23:59:59.000Z

124

E-Print Network 3.0 - atp synthetic flux Sample Search Results  

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

flux Search Powered by Explorit Topic List Advanced Search Sample search results for: atp synthetic flux Page: << < 1 2 3 4 5 > >> 1 A genetically encoded fluorescent reporter...

125

SciTech Connect: Synthetic Biology and the U.S. Biotechnology...  

Office of Scientific and Technical Information (OSTI)

of Publication: United States Language: English Subject: 60 APPLIED LIFE SCIENCES; 09 BIOMASS FUELS; 29 ENERGY PLANNING, POLICY, AND ECONOMY synthetic biology, biotechnology...

126

E-Print Network 3.0 - advanced synthetic aperture Sample Search...  

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

APERTURE MICROSCOPY: PHYSICS-BASED IMAGE RECONSTRUCTION FROM OPTICAL COHERENCE TOMOGRAPHY DATA Summary: INTERFEROMETRIC SYNTHETIC APERTURE MICROSCOPY: PHYSICS-BASED IMAGE...

127

Uncertainty in synthetic biology for release and possibilities for regulation under the Toxic Substances Control Act  

E-Print Network [OSTI]

The emerging field of synthetic biology is developing rapidly and promises diverse applications. Many anticipated applications, particularly those involving release of engineered microbes into the environment or human ...

Lightfoot, Shlomiya

2014-01-01T23:59:59.000Z

128

Evolution of Photosynthesis  

E-Print Network [OSTI]

Evolution of Photosynthesis John F Allen, Queen Mary, University of London, London, UK Wim FJ Vermaas, Arizona State University, Tempe, Arizona, USA Photosynthesis is the conversion of radiant energy for the oxygenic photosynthesis that now dominates biological energy flow in the biosphere. The evolutionary origin

Allen, John F.

129

ECOLOGY & EVOLUTION CONSERVATION BIOLOGY  

E-Print Network [OSTI]

.arlettaz@iee.unibe.ch www.conservation.unibe.ch Grassland management: designing tomorrow's farmland for biodiversity 1ECOLOGY & EVOLUTION CONSERVATION BIOLOGY Prof. Dr Raphaël Arlettaz Head of the division of Conservation Biology Office: Erlachstrasse 9a Mail: Baltzerstrasse 6 CH­3012 Bern +41 31 631 31 61 +41 79 637

Richner, Heinz

130

Evolution of Life on Earth EVOLUTION OF LIFE ON EARTH  

E-Print Network [OSTI]

Evolution of Life on Earth #12;EVOLUTION OF LIFE ON EARTH #12;Earth ~4.5 billion years ago A bad day .... #12;Old (Archean) Rocks #12;4.4 Billion year old Zircon Earth was temperate and had water 4.4 billion years ago! #12;#12;EVOLUTION OF LIFE ON EARTH #12;Making Organic Molecules : Miller & Urey Famous

Shirley, Yancy

131

Evolution and the Fossil Record  

E-Print Network [OSTI]

form proteins. #12;Evidence of Evolution · Homology · Analogous organs or Convergent Evolution of features. e.g. all primates have 5 fingers; apes and humans lack a tail; all tetrapods have similar limb

Kammer, Thomas

132

Study of scintillation in natural and synthetic quartz and methacrylate  

E-Print Network [OSTI]

Samples from different materials typically used as optical windows or light guides in scintillation detectors were studied in a very low background environment, at the Canfranc Underground Laboratory, searching for scintillation. A positive result can be confirmed for natural quartz: two distinct scintillation components have been identified, not being excited by an external gamma source. Although similar effect has not been observed neither for synthetic quartz nor for methacrylate, a fast light emission excited by intense gamma flux is evidenced for all the samples in our measurements. These results could affect the use of these materials in low energy applications of scintillation detectors requiring low radioactive background conditions, as they entail a source of background.

J. Amare; S. Borjabad; S. Cebrian; C. Cuesta; D. Fortuno; E. Garcia; C. Ginestra; H. Gomez; D. C. Herrera; M. Martinez; M. A. Olivan; Y. Ortigoza; A. Ortiz de Solorzano; C. Pobes; J. Puimedon; M. L. Sarsa; J. A. Villar; P. Villar

2014-03-27T23:59:59.000Z

133

Characterization of secondary collection system flows beneath synthetic composite liners  

SciTech Connect (OSTI)

Secondary liner systems for landfills are becoming more common. Subtitle D may be construed to require secondary liners to meet monitorability requirements for new units. Michigan requires secondary liners in many situations, most commonly at previously contaminated sites to allow for differential monitoring of the new cell(s). Much work has been done in characterizing the flow of liquids through FML/clay composite liners but less is known about flows through FML/geosynthetic clay liner (GCL) composite liners or through isolated FMLs. Flow and chemical data are examined from two Michigan landfills employing different configurations of all synthetic primary and secondary liners. The data is examined for apparent trends. Conclusions are drawn about the application of generic action flow rates as a regulatory standard to these systems and the chemical characteristics of the liquids in secondary systems. Calculations are presented to achieve a realistic action leakage rate for these systems.

Groenleer, M.E. [Wenck Associates, Inc., Grand Rapids, MI (United States)

1995-12-31T23:59:59.000Z

134

Observation of Dirac Monopoles in a Synthetic Magnetic Field  

E-Print Network [OSTI]

Magnetic monopoles --- particles that behave as isolated north or south magnetic poles --- have been the subject of speculation since the first detailed observations of magnetism several hundred years ago. Numerous theoretical investigations and hitherto unsuccessful experimental searches have followed Dirac's 1931 development of a theory of monopoles consistent with both quantum mechanics and the gauge invariance of the electromagnetic field. The existence of even a single Dirac magnetic monopole would have far-reaching physical consequences, most famously explaining the quantization of electric charge. Although analogues of magnetic monopoles have been found in exotic spin-ices and other systems, there has been no direct experimental observation of Dirac monopoles within a medium described by a quantum field, such as superfluid helium-3. Here we demonstrate the controlled creation of Dirac monopoles in the synthetic magnetic field produced by a spinor Bose-Einstein condensate. Monopoles are identified, in b...

Ray, M W; Kandel, S; Möttönen, M; Hall, D S

2014-01-01T23:59:59.000Z

135

Anatomy of Scientific Evolution  

E-Print Network [OSTI]

The quest for historically impactful science and technology provides invaluable insight into the innovation dynamics of human society, yet many studies are limited to qualitative and small-scale approaches. Here, we investigate scientific evolution through systematic analysis of a massive corpus of digitized English texts between 1800 and 2008. Our analysis reveals remarkable predictability for long-prevailing scientific concepts based on the levels of their prior usage. Interestingly, once a threshold of early adoption rates is passed even slightly, scientific concepts can exhibit sudden leaps in their eventual lifetimes. We developed a mechanistic model to account for such results, indicating that slowly-but-commonly adopted science and technology surprisingly tend to have higher innate strength than fast-and-commonly adopted ones. The model prediction for disciplines other than science was also well verified. Our approach sheds light on unbiased and quantitative analysis of scientific evolution in society,...

Yun, Jinhyuk; Jeong, Hawoong

2014-01-01T23:59:59.000Z

136

Environment and Protostellar Evolution  

E-Print Network [OSTI]

Even today in our Galaxy, stars form from gas cores in a variety of environments, which may affect the properties of resulting star and planetary systems. Here we study the role of pressure, parameterized via ambient clump mass surface density, on protostellar evolution and appearance, focussing on low-mass, Sun-like stars and considering a range of conditions from relatively low pressure filaments in Taurus, to intermediate pressures of cluster-forming clumps like the Orion Nebula Cluster (ONC), to very high pressures that may be found in the densest Infrared Dark Clouds (IRDCs) or in the Galactic Center (GC). We present unified analytic and numerical models for collapse of prestellar cores, accretion disks, protostellar evolution and bipolar outflows, coupled to radiative transfer (RT) calculations and a simple astrochemical model to predict CO gas phase abundances. Prestellar cores in high pressure environments are smaller and denser and thus collapse with higher accretion rates and efficiencies, resulting...

Zhang, Yichen

2014-01-01T23:59:59.000Z

137

Inverse-synthetic-aperture imaging of trees over a ground plane  

SciTech Connect (OSTI)

Recent data collections with the Sandia VHF-UHF synthetic-aperture radar have yielded surprising results; trees appear brighter in the images than expected! In an effort to understand this phenomenon, various small trees have been measured on the Sandia folded compact range with the inverse-synthetic-aperture imaging system. A compilation of these measurements is contained in this report.

Zittel, D.H.; Brock, B.C.; Littlejohn, J.H.; Patitz, W.E.

1995-11-01T23:59:59.000Z

138

Reduced thermal resistance of the silicon-synthetic diamond composite substrates at elevated temperatures  

E-Print Network [OSTI]

/Si sub- strates, depends on the polycrystalline-diamond grain size, diamond layer thicknessReduced thermal resistance of the silicon-synthetic diamond composite substrates at elevated of synthetic diamond-silicon composite substrates. Although composite substrates are more thermally resistive

139

ForPeerReview From vegetable oils to polyurethanes: synthetic routes to  

E-Print Network [OSTI]

From vegetable oils to polyurethanes: synthetic routes to polyols and main industrial products Myriam and main industrial products Most of biobased polyols for polyurethanes are synthesized from vegetable oils literature; focus on the industrial synthetic routes. Keywords: vegetable oils; biobased polyols

Boyer, Edmond

140

WOBBLED SYNTHETIC DISCRIMINANT FUNCTION CLASSIFICATION Chye-Hwa Loo and Atef Elsherbeni  

E-Print Network [OSTI]

fragment-based recognition approach and a new type of synthetic discriminant function (SDF) filter in this paper is to use a new type of Synthetic Discriminant Function (SDF) to reduce the number of reference the principal of SDF while introducing a new type of SDF code named Wobbled SDF. In Section 2, the Analysis

Elsherbeni, Atef Z.

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Polishing of synthetic electroplating wastewater in microcosm upflow constructed wetlands: Metals removal mechanisms  

E-Print Network [OSTI]

Polishing of synthetic electroplating wastewater in microcosm upflow constructed wetlands: Metals in microcosm upflow constructed wetlands used for polishing of synthetic electroplating wastewater. Four types (2014) 53-42" DOI : 10.1016/j.cej.2013.12.075 #12;Keywords electroplating wastewater, metals, cyanides

Paris-Sud XI, Université de

142

BLIND TESTS OF REFRACTION MICROTREMOR ANALYSIS AGAINST SYNTHETICS AND BOREHOLE DATA  

E-Print Network [OSTI]

BLIND TESTS OF REFRACTION MICROTREMOR ANALYSIS AGAINST SYNTHETICS AND BOREHOLE DATA Karalyn Heath1 the synthetics in a blind test, following standard ReMi procedures. Between the models and the blind results, we% for Z0. For the second application, we completed blind analyses of refraction microtremor data taken

143

Image-Based Rendering for Non-Diffuse Synthetic Scenes Dani Lischinski Ari Rappoport  

E-Print Network [OSTI]

Image-Based Rendering for Non-Diffuse Synthetic Scenes Dani Lischinski Ari Rappoport The Hebrew University Abstract. Most current image-based rendering methods operate under the assumption that all with image-based rendering of non-diffuse synthetic scenes. We introduce a new family of image-based scene

Rappoport, Ari

144

FSAAWG, ROME 2011 1 Synthetic Voice Forgery in the Forensic Context: a  

E-Print Network [OSTI]

FSAAWG, ROME 2011 1 Synthetic Voice Forgery in the Forensic Context: a short tutorial Guillaume Paristech, dép. TSI 37-39 rue Dareau 75014 PARIS Abstract--Technical voice forgery in the forensic area has, the forensic context is quite different since the human ear might be able to detect a synthetic voice, thus

Paris-Sud XI, Université de

145

Synthetic jets at large Reynolds number and comparison to continuous jets  

SciTech Connect (OSTI)

Experimental measurements and flow visualization of synthetic jets and similar continuous jets are described. The dimensionless stroke length necessary to form a 2-D synthetic jet is between 5 and 10, with wider-nozzle jets consistently requiring a smaller value. Synthetic jets are wider, slower and have more momentum than similar continuous jets. Synthetic jets are generated using four nozzle widths that vary by a factor of four, and the driving frequency is varied over an order of magnitude. The resultant jets are in the range 13.5 < L{sub o}/h < 80.8 and 695 < Re{sub Uo} < 14700. In spite of the large range of stroke lengths, the near-field behavior of the synthetic jets scales with L{sub o}/h.

Smith, B. L. (Barton L.); Swift, G. W. (Gregory W.)

2001-01-01T23:59:59.000Z

146

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production  

SciTech Connect (OSTI)

This report presents and discusses results from Task 5 of the study ''Fate of Mercury in Synthetic Gypsum Used for Wallboard Production,'' performed at a full-scale commercial wallboard plant. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. The FGD process is used to control the sulfur dioxide emissions which would result in acid rain if not controlled. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies developed for power plants involve the capture of mercury in FGD systems. The objective of this study is to determine whether any mercury is released into the atmosphere when the synthetic gypsum material is used as a feedstock for wallboard production. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope includes five discrete tasks, each conducted at various USG wallboard plants using synthetic gypsum from different FGD systems. The five tasks were to include (1) a baseline test, then variations representing differing power plant (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5, which was to evaluate gypsum produced from an alternate FGD reagent, could not be conducted as planned. Instead, Task 5 was conducted at conditions similar to a previous task, Task 3, although with gypsum from an alternate FGD system. In this project, process stacks in the wallboard plant have been sampled using the Ontario Hydro method. The stack locations sampled for each task include a dryer for the wet gypsum as it enters the plant and a gypsum calciner. The stack of the dryer for the wet wallboard product was also tested as part of this task, and was tested as part of Tasks 1 and 4. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. The Ontario Hydro results, process sample mercury concentration data, and process data were used to construct mercury mass balances across the wallboard plants. Task 5 was conducted at a wallboard plant processing synthetic gypsum from a power plant that fires Eastern bituminous coal. The power plant is equipped with a selective catalytic reduction (SCR) system for NOX emissions control, but the SCR was bypassed during the time period the gypsum tested was produced. The power plant has a single-loop, open spray tower, limestone reagent FGD system, with forced oxidation conducted in a reaction tank integral with the FGD absorber. The FGD system has gypsum fines blow down as part of the dewatering step. Gypsum fines blow down is believed to be an important variable that impacts the amount of mercury in the gypsum byproduct and possibly its stability during the wallboard process. The results of the Task 5 stack testing, as measured by the Ontario Hydro method, detected that an average of 51% of the incoming mercury in the FGD gypsum was emitted during wallboard production. These losses were distributed as 2% or less each across the wet gypsum dryer and product wallboard dryer, and about 50% across the gypsum calciner. Emissions were similar to what Task 3 results showed, on both a percentage and a mass basis, for gypsum produced by a power plant firing bituminous coal and also having gypsum fines blow down as part of the FGD dewatering scheme. As was seen in the Task 1 through 4 results, most of the mercury detected in the stack testing on the wet gypsum dryer and kettle calciner was in the form of elemental mercury. In the wallboard dryer kiln, a more signific

Jessica Marshall Sanderson

2006-06-01T23:59:59.000Z

147

Arbib, Fagg and Grafton: Synthetic PET Imaging for Grasping May 20, 2001 1 Arbib, M.A., Fagg, A.H., and Grafton, S.T., to appear, Synthetic PET Imaging for Grasping: From  

E-Print Network [OSTI]

Arbib, Fagg and Grafton: Synthetic PET Imaging for Grasping May 20, 2001 1 Arbib, M.A., Fagg, A.H., and Grafton, S.T., to appear, Synthetic PET Imaging for Grasping: From Primate Neurophysiology to Human, Eds.), Cambridge MA: The MIT Press. Synthetic PET Imaging for Grasping: From Primate Neurophysiology

Massachusetts at Amherst, University of

148

Lynx: A High-Resolution Synthetic Aperture Radar  

SciTech Connect (OSTI)

Lynx is a high resolution, synthetic aperture radar (SAR) that has been designed and built by Sandia National Laboratories in collaboration with General Atomics (GA). Although Lynx may be operated on a wide variety of manned and unmanned platforms, it is primarily intended to be fielded on unmanned aerial vehicles. In particular, it may be operated on the Predator, I-GNAT, or Prowler II platforms manufactured by GA Aeronautical Systems, Inc. The Lynx production weight is less than 120 lb. and has a slant range of 30 km (in 4 mm/hr rain). It has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode. In ground moving target indicator mode, the minimum detectable velocity is 6 knots with a minimum target cross-section of 10 dBsm. In coherent change detection mode, Lynx makes registered, complex image comparisons either of 0.1 m resolution (minimum) spotlight images or of 0.3 m resolution (minimum) strip images. The Lynx user interface features a view manager that allows it to pan and zoom like a video camera. Lynx was developed under corporate finding from GA and will be manufactured by GA for both military and commercial applications. The Lynx system architecture will be presented and some of its unique features will be described. Imagery at the finest resolutions in both spotlight and strip modes have been obtained and will also be presented.

Doerry, A.W.; Hensley, W.H.; Pace, F.; Stence, J.; Tsunoda, S.I.; Walker, B.C.; Woodring, M.

1999-03-08T23:59:59.000Z

149

Kinetics and thermodynamics of hydrotreating synthetic middle distillates  

SciTech Connect (OSTI)

Middle distillates from the Tar Sands deposits in Alberta are an important component of diesel and jet fuels in the Canadian market. Commercial catalysts based on sulfided Ni-Mo and Ni-W are currently used to hydrogenate synthetic distillates to improve the cetane number and smoke point. In previous work {sup 13}C NMR was used to study the kinetics of overall hydrogenation of aromatics over sulfided Co-Mo, Ni-Mo and Ni-W catalysts. Arrhenius parameters were obtained for hydrogenation over sulfided Ni-W catalyst for a similar distillate feedstock. In the latter study, mass spectrometry was used to quantitate the three major aromatic hydrocarbon group types in the feed and products. In this study, liquid products from hydrotreating experiments with a hydrotreated distillate from delayed coking of Athabasca bitumen and sulfided Co-Mo and Ni-Mo catalysts have been analyzed by mass spectrometry. This completes a preliminary comparison of the kinetics of hydrogenation of alkylbenzenes, benzocycloparaffins and benzodicycloparaffins, the three major aromatic hydrocarbon types in these distillates.

Fisher, I.P. (Petro-Canada R and D Dept., Sheridan Park, Ontario (Canada)); Wilson, M.F. (CANMET, Ottawa, Ontario (Canada))

1987-04-01T23:59:59.000Z

150

Observation of Dirac Monopoles in a Synthetic Magnetic Field  

E-Print Network [OSTI]

Magnetic monopoles --- particles that behave as isolated north or south magnetic poles --- have been the subject of speculation since the first detailed observations of magnetism several hundred years ago. Numerous theoretical investigations and hitherto unsuccessful experimental searches have followed Dirac's 1931 development of a theory of monopoles consistent with both quantum mechanics and the gauge invariance of the electromagnetic field. The existence of even a single Dirac magnetic monopole would have far-reaching physical consequences, most famously explaining the quantization of electric charge. Although analogues of magnetic monopoles have been found in exotic spin-ices and other systems, there has been no direct experimental observation of Dirac monopoles within a medium described by a quantum field, such as superfluid helium-3. Here we demonstrate the controlled creation of Dirac monopoles in the synthetic magnetic field produced by a spinor Bose-Einstein condensate. Monopoles are identified, in both experiments and matching numerical simulations, at the termini of vortex lines within the condensate. By directly imaging such a vortex line, the presence of a monopole may be discerned from the experimental data alone. These real-space images provide conclusive and long-awaited experimental evidence of the existence of Dirac monopoles. Our result provides an unprecedented opportunity to observe and manipulate these quantum-mechanical entities in a controlled environment.

M. W. Ray; E. Ruokokoski; S. Kandel; M. Möttönen; D. S. Hall

2014-08-13T23:59:59.000Z

151

Synthetic aperture radar and interferometry development at Sandia National Laboratories  

SciTech Connect (OSTI)

Environmental monitoring, earth-resource mapping, and military systems require broad-area imaging at high resolutions. Many times the imagery must be acquired in inclement weather or during night as well as day. Synthetic aperture radar (SAR) provides such a capability. SAR systems take advantage of the long-range propagation characteristics of radar signals and the complex information processing capability of modern digital electronics to provide high resolution imagery. SAR complements photographic and other optical imaging capabilities because of the minimum constrains on time-of-day and atmospheric conditions and because of the unique responses of terrain and cultural targets to radar frequencies. Interferometry is a method for generating a three-dimensional image of terrain. The height projection is obtained by acquiring two SAR images from two slightly differing locations. It is different from the common method of stereoscopic imaging for topography. The latter relies on differing geometric projections for triangulation to define the surface geometry whereas interferometry relies on differences in radar propagation times between the two SAR locations. This paper presents the capabilities of SAR, explains how SAR works, describes a few SAR applications, provides an overview of SAR development at Sandia, and briefly describes the motion compensation subsystem.

NONE

1993-04-01T23:59:59.000Z

152

Concrete Chemical Evolution  

SciTech Connect (OSTI)

The objectives of this analysis are to discuss and evaluate testing results that were performed for the M&O by the Pennsylvania State University (PSU) to evaluate the potential long-term evolution of organic admixtures in cementitious materials at elevated temperatures. The testing was designed to help provide a basis for a determination by the Performance Assessment group (PA) of the long-term acceptability and longevity of cementitious materials for repository use. The main purpose of the testing was to assess the evolution of gases (especially CO{sub 2}) from hydrated cement paste at elevated temperatures and to determine the impact on alkalinity, i.e., the pH value of cement paste pore solution. This information in turn can be used as scoping information to determine if further tests of this nature are needed to support PA. As part of this discussion and evaluation of the PSU results, an assessment of alkalinity in a ''cementitious repository'' and an evaluation of organic materials are presented.

D.H. Tang

1998-07-31T23:59:59.000Z

153

Synthetic fuels from peat by the IGT PEATGAS Process  

SciTech Connect (OSTI)

Peat gasification research at the Institute of Gas Technology (IGT) began in 1974 under the sponsorship of the Minnesota Gas company (Minnegasco). The preliminary evaluation conducted under that program showed encouraging results and led to an expanded program under the joint sponsorship of the US Department of Energy (DOE) and Minnegasco. The current program is also funded by the Gas Research Institute (GRI) and the Northern Natural Gas Company (NNGC). Since 1976 IGT has completed tests with peats from Minnesota, North Carolina, and Maine in laboratory-scale equipment and process development units (PDU's). Tests in the hydrogasification PDU (which represents a scale-up of 250 times the laboratory-scale equipment) confirm the laboratory results. Preparations are being made for pilot-plant scale gasification tests in a modified coal gasification pilot plant (HYGAS) in Chicago. Based on the experimental results obtained in the laboratory-scale tests, IGT conceived a two-stage gasifier (named PEATGAS) for converting peat to synthetic fuels. The PEATGAS Process can be used for making medium- or high-Btu gas as well as liquid fuels. A complete process design and cost estimates have been prepared for a plant producing 250 million cubic feet of SNG per day from Minnesota peat containing 50% moisture. These estimates show that the conversion of peat (containing 50% moisture) is competitive with other alternative methods of SNG production. This paper discusses the important and significant gasification characteristics of the peats evaluated. The paper also describes the use of the PEATGAS Process for production of medium-Btu gas, methanol, and gasoline.

Punwani, D.V.; Rader, A.M.; Kopstein, M.J.

1980-01-01T23:59:59.000Z

154

A Path to the Formulation of New Generations of Synthetic Jet Fuel Derived from Natural Gas  

E-Print Network [OSTI]

with industry and academia to study synthetic jet fuels derived from natural gas. These studies are being implemented at its Fuel Characterization Lab where the most advanced testing equipment is used and strict Quality Management and safety systems are followed...

Al-Nuaimi, Ibrahim Awni Omar Hassan

2013-05-20T23:59:59.000Z

155

Volumetric analysis of fish swimming hydrodynamics using synthetic aperture particle image velocimetry  

E-Print Network [OSTI]

Abstract This thesis details the implementation of a three-dimensional PIV system to study the hydrodynamics of freely swimming Giant Danio (Danio aequipinnatus). Volumetric particle fields are reconstructed using synthetic ...

Mendelson, Leah Rose

2013-01-01T23:59:59.000Z

156

Structural Analysis of Human and Bovine Bone for Development of Synthetic Materials  

E-Print Network [OSTI]

bones, as well as mimicking nature by developing a synthetic material to repair bones. Experimentally, bovine bone, tumor-free human bone, and cancerous human bone were studied via the small scale mechanical loading test. Failure analysis was conducted...

Jang, Eunhwa

2012-10-19T23:59:59.000Z

157

Strategies for designing, testing and demonstrating safety : what synthetic biology can learn from retrospective cases  

E-Print Network [OSTI]

Synthetic biology is an emerging technology field within the realm of genetic engineering, differing from traditional genetic engineering in that it focuses on the modularization of genetic parts and the creation of de ...

Yeddanapudi, Neelima, 1976-

2009-01-01T23:59:59.000Z

158

Identification of conserved chromatin-regulatory complexes among the class B synthetic multivulva proteins  

E-Print Network [OSTI]

The class A, B, and C synthetic Multivulva (synMuv) genes act redundantly to antagonize Ras-mediated vulval induction in C. elegans. Many of these genes encode proteins that are likely to function in transcriptional ...

Harrison, Melissa M

2006-01-01T23:59:59.000Z

159

SYNFORMPeople, Trends and Views in Synthetic Organic Chemistry Direct Conversion of Arylamines  

E-Print Network [OSTI]

of Formamides to Alkynes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A41 Direct ConversionSYNFORMPeople, Trends and Views in Synthetic Organic Chemistry 2010/05 Thieme SYNSTORIES Direct Conversion of Arylamines to Pinacol Boronates Palladium-Catalyzed Intermolecular Addition of Formamides

Wang, Jianbo

160

Ribozyme-based "insulator parts" buffer synthetic circuits from genetic context  

E-Print Network [OSTI]

Synthetic genetic programs are built from circuits that integrate sensors and implement temporal control of gene expression1–4. Transcriptional circuits are layered by using promoters to carry the signal between circuits. ...

Lou, Chunbo

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


161

A fast, robust and tunable synthetic gene oscillator Jesse Stricker1  

E-Print Network [OSTI]

LETTERS A fast, robust and tunable synthetic gene oscillator Jesse Stricker1 *, Scott Cookson1 *, Matthew R. Bennett1,2 *, William H. Mather1 , Lev S. Tsimring2 & Jeff Hasty1,2 One defining goal

Hasty, Jeff

162

Synthetic creation of a chemotactic system via utilization of magnetically actuated microrobotic walkers  

E-Print Network [OSTI]

Chemotaxis is a fundamental biological process that plays an important role in disease, reproduction, and most biological functions. Here, we present a radically novel method to create the first synthetic chemotactic system ...

Steimel, Joshua Paul

2012-01-01T23:59:59.000Z

163

Polishing of synthetic electroplating wastewater in microcosm upflow constructed wetlands: Effect of operating conditions  

E-Print Network [OSTI]

Polishing of synthetic electroplating wastewater in microcosm upflow constructed wetlands: Effect of polishing electroplating wastewater in subsurface vertical flow constructed wetland. Electroplating wastewater treatment or polishing in constructed wetlands (CWs) was studied to a very limited degree. Four

Paris-Sud XI, Université de

164

ash-based synthetic aggregates: Topics by E-print Network  

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

state particle size distributions in a 3-d synthetic turbulent flow. We show how a fractal-like structure, typical of aggregates in natural systems, can be incorporated in an...

165

Transport synthetic acceleration methods for one-dimensional deterministic transport problems  

E-Print Network [OSTI]

We construct and analyze three transport synthetic acceleration schemes. Our goal is the development of a rapidly convergent acceleration scheme that is robust and computationally efficient even for thick, diffusive problems. Additionally, we hope...

Hawkins, William Daryl

2003-01-01T23:59:59.000Z

166

A platform for rapid prototyping of synthetic gene networks in mammalian cells  

E-Print Network [OSTI]

Mammalian synthetic biology may provide novel therapeutic strategies, help decipher new paths for drug discovery and facilitate synthesis of valuable molecules. Yet, our capacity to genetically program cells is currently ...

Wroblewska, Liliana

167

Focused synthetic aperture radar processing of ice-sounder data collected over the Greenland ice sheet  

E-Print Network [OSTI]

We developed a synthetic aperture radar (SAR) processing algorithm for airborne/spaceborne ice-sounding radar systems and applied it to data collected in Greenland. By using focused SAR (phase-corrected coherent averaging), we improved along...

Legarsky, J.; Gogineni, Sivaprasad; Akins, T. L.

2001-10-01T23:59:59.000Z

168

A Method for Fast, High-Precision Characterization of Synthetic Biology Devices  

E-Print Network [OSTI]

Engineering biological systems with predictable behavior is a foundational goal of synthetic biology. To accomplish this, it is important to accurately characterize the behavior of biological devices. Prior characterization ...

Beal, Jacob

2012-04-07T23:59:59.000Z

169

Chemical Evolution in Omega Centauri  

E-Print Network [OSTI]

The globular cluster Omega Centauri displays evidence of a complex star formation history and peculiar internal chemical evolution, setting it apart from essentially all other globular clusters of the Milky Way. In this review we discuss the nature of the chemical evolution that has occurred within Omega Cen and attempt to construct a simple scenario to explain its chemistry.

Verne V. Smith

2003-10-22T23:59:59.000Z

170

Process for gasification using a synthetic CO.sub.2 acceptor  

DOE Patents [OSTI]

A gasification process is disclosed using a synthetic CO.sub.2 acceptor consisting essentially of at least one compound selected from the group consisting of calcium oxide and calcium carbonate supported in a refractory carrier matrix, the carrier having the general formula Ca.sub.5 (SiO.sub.4).sub.2 CO.sub.3. A method for producing the synthetic CO.sub.2 acceptor is also disclosed.

Lancet, Michael S. (Pittsburgh, PA); Curran, George P. (Pittsburgh, PA)

1980-01-01T23:59:59.000Z

171

XAFS of Synthetic Iron(III)-Arsenate Co-Precipitates and Uranium Mill Neutralized Raffinate  

SciTech Connect (OSTI)

XAFS studies were carried out for chemical speciation of arsenic species in uranium mill neutralized raffinate solids. To aid the structural characterization, synthetic iron(III)-arsenate co-precipitates were prepared to mimic the actual uranium mill tailings neutralization products. The principle components analysis method was used to validate the synthetic amorphous scorodite as a primary model compound for arsenate species in the raffinate samples under the specific precipitation conditions.

Chen, N. [Canadian Light Source, University of Saskatchewan, Saskatoon, SK S7N 0X4 (Canada); Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK (Canada); Jiang, D. T. [Canadian Light Source, University of Saskatchewan, Saskatoon, SK S7N 0X4 (Canada); COGEMA Resources Inc., Saskatoon, SK S7K 3X5 (Canada); Department of Physics, University of Guelph, Guelph, ON N1G 2W1 (Canada); Cutler, J. [Canadian Light Source, University of Saskatchewan, Saskatoon, SK S7N 0X4 (Canada); Demopoulos, G. P. [Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK (Canada); Rowson, J. W. [Department of Materials Engineering, McGill University, Montreal, QC H3A 2B2 (Canada)

2007-02-02T23:59:59.000Z

172

Lighting system with thermal management system having point contact synthetic jets  

DOE Patents [OSTI]

Lighting system having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system includes a plurality of synthetic jets. The synthetic jets are arranged within the lighting system such that they are secured at contact points.

Arik, Mehmet; Weaver, Stanton Earl; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Sharma, Rajdeep

2013-12-10T23:59:59.000Z

173

Procedure for matching synfuel users with potential suppliers. Appendix B. Proposed and ongoing synthetic fuel production projects  

SciTech Connect (OSTI)

To assist the Department of Energy, Office of Fuels Conversion (OFC), in implementing the synthetic fuel exemption under the Powerplant and Industrial Fuel Use Act (FUA) of 1978, Resource Consulting Group, Inc. (RCG), has developed a procedure for matching prospective users and producers of synthetic fuel. The matching procedure, which involves a hierarchical screening process, is designed to assist OFC in: locating a supplier for a firm that wishes to obtain a synthetic fuel exemption; determining whether the fuel supplier proposed by a petitioner is technically and economically capable of meeting the petitioner's needs; and assisting the Synthetic Fuels Corporation or a synthetic fuel supplier in evaluating potential markets for synthetic fuel production. A data base is provided in this appendix on proposed and ongoing synthetic fuel production projects to be used in applying the screening procedure. The data base encompasses a total of 212 projects in the seven production technologies.

None

1981-08-07T23:59:59.000Z

174

A Synthetic Nickel Electrocatalyst With a Turnover Frequency Above 100,000 s-1 for H2 Production  

SciTech Connect (OSTI)

Increased worldwide energy demand will require greater use of carbon-neutral sustainable energy sources. The intermittent nature of solar and wind power requires storage of energy, so electrocatalysts that convert electrical energy to chemical bonds in fuels are needed. Platinum is an excellent catalyst, but it is of low abundance and high cost. Hydrogenase enzymes in Nature catalyze the evolution of H2 and use earth-abundant metals such as nickel and iron. We report that a synthetic nickel catalyst, [Ni(7PPh2NPh)2](BF4)2, (7PPh2NPh = 1,3,6-triphenyl-1-aza-3,6-diphosphacycloheptane) catalyzes the production of H2 using [(DMF)H]+OTf as the proton source, with turnover frequencies of 31,000 s-1 in dry acetonitrile and 108,000 s-1 in the presence of H2O (1.2 M), at a potential of -1.13 V (vs. the ferrocenium/ferrocene couple). These turnover frequencies exceed those reported for the [FeFe] hydrogenase enzyme by more than an order of magnitude, and are the fastest reported for any molecular catalyst for H2 production. This material is based upon work supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences.

Helm, Monte L.; Stewart, Michael P.; Bullock, R. Morris; Rakowski DuBois, Mary; DuBois, Daniel L.

2011-08-12T23:59:59.000Z

175

Interactions of Jet Fuels with Nitrile O-Rings: Petroleum-Derived versus Synthetic Fuels  

SciTech Connect (OSTI)

A transition from petroleum-derived jet fuels to blends with Fischer-Tropsch (F-T) fuels, and ultimately fully synthetic hydro-isomerized F-T fuels has raised concern about the fate of plasticizers in nitrile-butadiene rubber o-rings that are contacted by the fuels as this transition occurs. The partitioning of plasticizers and fuel molecules between nitrile o-rings and petroleum-derived, synthetic, and additized-synthetic jet fuels has been measured. Thermal desorption of o-rings soaked in the various jet fuels followed by gas chromatographic analysis with a mass spectrometric detector showed many of the plasticizer and stabilizer compounds were removed from the o-rings regardless of the contact fuel. Fuel molecules were observed to migrate into the o-rings for the petroleum-derived fuel as did both the fuel and additive for a synthetic F-T jet fuel additized with benzyl alcohol, but less for the unadditized synthetic fuel. The specific compounds or classes of compounds involved in the partitioning were identified and a semiquantitative comparison of relative partitioning of the compounds of interest was made. The results provide another step forward in improving the confidence level of using additized, fuIly synthetic jet fuel in the place of petroleum-derived fueL

Gormley, R.J.; Link, D.D.; Baltrus, J.P.; Zandhuis, P.H.

2008-01-01T23:59:59.000Z

176

Interactions of Jet Fuels with Nitrile O-Rings: Petroleum-Derived versus Synthetic Fuels  

SciTech Connect (OSTI)

A transition from petroleum-derived jet fuels to blends with Fischer-Tropsch (F-T) fuels, and ultimately fully synthetic hydro-isomerized F-T fuels has raised concern about the fate of plasticizers in nitrile-butadiene rubber a-rings that are contacted by the fuels as this transition occurs. The partitioning of plasticizers and fuel molecules between nitrile a-rings and petroleum-derived, synthetic, and additized-synthetic jet fuels has been measured. Thermal desorption of o-rings soaked in the various jet fuels followed by gas chromatographic analysis with a mass spectrometric detector showed many of the plasticizer and stabilizer compounds were removed from the o-rings regardless of the contact fuel. Fuel molecules were observed to migrate into the o-rings for the petroleum-derived fuel as did both the fuel and additive for a synthetic F-T jet fuel additized with benzyl alcohol, but less for the unadditized synthetic fuel. The specific compounds or classes of compounds involved in the partitioning were identified and a semiquantitative comparison of relative partitioning of the compounds of interest was made. The results provide another step forward in improving the confidence level of using additized, fully synthetic jet fuel in the place of petroleum-derived fuel.

Gormley, R.J.; Link, D.D.; Baltrus, J.P.; Zandhuis, P.H.

2009-01-01T23:59:59.000Z

177

Planet Formation: Planet Formation: Evolution of The Solar NebulaEvolution of The Solar Nebula  

E-Print Network [OSTI]

Planet Formation: Planet Formation: Evolution of The Solar NebulaEvolution of The Solar Nebula #12;Evolution of the Solar NebulaEvolution of the Solar Nebula 1.1. Nebula collapses into a disk 2000 KTemperatures near the Sun reach 2000 K #12;Evolution of the Solar NebulaEvolution of the Solar

Herrick, Robert R.

178

Synthetic Coal Slag Infiltration into Varying Refractory Materials  

SciTech Connect (OSTI)

The infiltrations of synthetic coal slag into 99%Al{sub 2}O{sub 3}, 85%Al{sub 2}O{sub 3}–15%SiO{sub 2}, and 90%Cr{sub 2}O{sub 3}–10%Al{sub 2}O{sub 3} refractories with a temperature gradient induced along the penetration direction were compared to one another. The infiltrating slag was synthesized with a composition that is representative of an average of the ash contents from U S coal feedstock. Experiments were conducted with a hot-face temperature of 1450°C in a CO/CO{sub 2} atmosphere. Minimal penetration was observed in the 90%Cr{sub 2}O{sub 3}–10%Al{sub 2}O{sub 3} material because interactions between the refractory and the slag produced a protective layer of FeCr{sub 2}O{sub 4}, which impeded slag flow into the bulk of the refractory. After 5 h, the 99%Al{sub 2}O{sub 3} sample exhibited an average penetration of 12.7 mm whereas the 85%Al{sub 2}O{sub 3}–15%SiO{sub 2} sample showed 3.8 mm. Slag infiltrated into the 99%Al{sub 2}O{sub 3} and 85%Al{sub 2}O{sub 3}–15%SiO{sub 2} refractory systems by dissolving the respective refractories' matrix materials, which consist of fine Al{sub 2}O{sub 3} particles and an amorphous alumino-silicate phase. Due to enrichment in SiO{sub 2}, a network-former, infiltration into the 85%Al{sub 2}O{sub 3}–15%SiO{sub 2} system yielded a higher viscosity slag and hence, a shallower penetration depth. The results suggest that slag infiltration can be limited by interactions with the refractory through the formation of either a solid layer that physically impedes fluid flow or a more viscous slag that retards infiltration.

Kaneko, Tetsuya K.; Thomas, Hugh; Bennett, James P.; Sridhar, Seetharaman

2012-10-01T23:59:59.000Z

179

Evolution of the Midwest ISO  

E-Print Network [OSTI]

-Transmission Owning Members Marketers · Allegheny Energy Supply · American Electric Power Co. · Automated Power Transmission System Operator, Inc. MAPP Fall Conference August 28, 2002 #12;Overview · General Background Information · MISO Today · MISO Evolution #12;General Background Information #12;General Utility Background

Tesfatsion, Leigh

180

ECOLOGY AND EVOLUTION SEMINAR SERIES*  

E-Print Network [OSTI]

ECOLOGY AND EVOLUTION SEMINAR SERIES* WINTER 2013 ECL 296 (CRN 50337) / PBG 292 (CRN 64677 24 The Modern Ecology of Ice-Covered Lakes in Antarctica: A Journey Back JANUARY 31 Lizards in an Evolutionary Tree: Ecology and Adaptive Radiation

Ishida, Yuko

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Chemical Evolution of CNO abundances  

E-Print Network [OSTI]

New low and intermediate star yields calculated by Buell (1997) are evaluated by using them in a Galactic Chemical Evolution model. We analyze their effects on CNO elemental abundances

M. Gavilan; M. Molla

2003-02-05T23:59:59.000Z

182

I. ISOLATION AND CHARACTERIZATION OF BIOACTIVE COMPOUNDS FROM SURINAME AND MADAGASCAR FLORA. II. A SYNTHETIC APPROACH TO LUCILACTAENE.  

E-Print Network [OSTI]

??ISOLATION AND CHARACTERIZATION OF BIOACTIVE COMPOUNDS FROM SURINAME AND MADAGASCAR FLORA AND A SYNTHETIC APPROACH TO LUCILACTAENE ABSTRACT Eba Adou As part of an International… (more)

Adou, Eba

2006-01-01T23:59:59.000Z

183

A bio-synthetic interface for discovery of viral entry mechanisms.  

SciTech Connect (OSTI)

Understanding and defending against pathogenic viruses is an important public health and biodefense challenge. The focus of our LDRD project has been to uncover the mechanisms enveloped viruses use to identify and invade host cells. We have constructed interfaces between viral particles and synthetic lipid bilayers. This approach provides a minimal setting for investigating the initial events of host-virus interaction - (i) recognition of, and (ii) entry into the host via membrane fusion. This understanding could enable rational design of therapeutics that block viral entry as well as future construction of synthetic, non-proliferating sensors that detect live virus in the environment. We have observed fusion between synthetic lipid vesicles and Vesicular Stomatitis virus particles, and we have observed interactions between Nipah virus-like particles and supported lipid bilayers and giant unilamellar vesicles.

Gutzler, Mike; Maar, Dianna; Negrete, Oscar; Hayden, Carl C.; Sasaki, Darryl Yoshio; Stachowiak, Jeanne C.; Wang, Julia

2010-09-01T23:59:59.000Z

184

Analysis of synthetic motor oils for additive elements by ICP-AES  

SciTech Connect (OSTI)

Standard motor oils are made by blending paraffinic or naphthenic mineral oil base stocks with additive packages containing anti-wear agents, dispersants, corrosion inhibitors, and viscosity index improvers. The blender can monitor the correct addition of the additives by determining the additive elements in samples dissolved in a solvent by ICP-AES. Internal standardization is required to control sample transport interferences due to differences in viscosity between samples and standards. Synthetic motor oils, made with poly-alpha-olefins and trimethylol propane esters, instead of mineral oils, pose an additional challenge since these compounds affect the plasma as well as having sample transport interference considerations. The synthetic lubricant base stocks add significant oxygen to the sample matrix, which makes the samples behave differently than standards prepared in mineral oil. Determination of additive elements in synthetic motor oils will be discussed.

Williams, M.C.; Salmon, S.G. [Texaco Inc., Beacon, NY (United States)

1995-12-31T23:59:59.000Z

185

The removal kinetics of industrial organic compounds in natural and synthetic systems  

E-Print Network [OSTI]

THE REMOVAL KINETICS OF INDUSTRIAL ORGANIC COMPOUNDS IN NATURAL AND SYNTHETIC SYSTEMS A Thesis by ALBERT C. PETRASEK, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE May 1970 Major Subject: Civil Engineering THE REMOVAL, KINETICS OF INDUSTRIAL ORGANIC COMPOUNDS IN NATURAL AND SYNTHETIC SYSTEMS A Thesis by ALBERT C. PETRASEK? dR ~ Approved as to style and content by a rman o omm t ee em er...

Petrasek, Albert Charles

1970-01-01T23:59:59.000Z

186

Synthetic peptides that cause F-actin bundling and block actin depolymerization  

DOE Patents [OSTI]

Synthetic peptides derived from sucrose synthase, and having homology to actin and actin-related proteins, sharing a common motif, useful for causing acting bundling and preventing actin depolymerization. Peptides exhibiting the common motif are described, as well as specific synthetic peptides which caused bundled actin and inhibit actin depolymerization. These peptides can be useful for treating a subject suffering from a disease characterized by cells having neoplastic growth, for anti-cancer therapeutics, delivered to subjects solely, or concomitantly or sequentially with other known cancer therapeutics. These peptides can also be used for stabilizing microfilaments in living cells and inhibiting growth of cells.

Sederoff, Heike (Raleigh, NC); Huber, Steven C (Savoy, IL); Larabell, Carolyn A (Berkeley, CA)

2011-10-18T23:59:59.000Z

187

The Dartmouth Stellar Evolution Database  

E-Print Network [OSTI]

The ever-expanding depth and quality of photometric and spectroscopic observations of stellar populations increase the need for theoretical models in regions of age-composition parameter space that are largely unexplored at present. Stellar evolution models that employ the most advanced physics and cover a wide range of compositions are needed to extract the most information from current observations of both resolved and unresolved stellar populations. The Dartmouth Stellar Evolution Database is a collection of stellar evolution tracks and isochrones that spans a range of [Fe/H] from -2.5 to +0.5, [alpha/Fe] from -0.2 to +0.8 (for [Fe/H] 0), and initial He mass fractions from Y=0.245 to 0.40. Stellar evolution tracks were computed for masses between 0.1 and 4 Msun, allowing isochrones to be generated for ages as young as 250 Myr. For the range in masses where the core He flash occurs, separate He-burning tracks were computed starting from the zero age horizontal branch. The tracks and isochrones have been transformed to the observational plane in a variety of photometric systems including standard UBV(RI)c, Stromgren uvby, SDSS ugriz, 2MASS JHKs, and HST ACS-WFC and WFPC2. The Dartmouth Stellar Evolution Database is accessible through a website at http://stellar.dartmouth.edu/~models/ where all tracks, isochrones, and additional files can be downloaded.

Aaron Dotter; Brian Chaboyer; Darko Jevremovic; Veselin Kostov; E. Baron; J. W. Ferguson

2008-04-28T23:59:59.000Z

188

Universality and Evolution of TMDs  

E-Print Network [OSTI]

In this talk, we summarize how QCD evolution can be exploited to improve the treatment of transverse momentum dependent (TMD) parton distribution and fragmentation functions. The methods allow existing non-perturbative fits to be turned into fully evolved TMDs that are consistent with a complete TMD-factorization formalism over the full range of kT. We argue that evolution is essential to the predictive power of calculations that utilize TMD parton distribution and fragmentation functions, especially TMD observables that are sensitive to transverse spin.

S. Mert Aybat; Ted C. Rogers

2011-10-27T23:59:59.000Z

189

Making Lasting Bonds Through Synthetic Chemistry Tim Hubin and William Kelly  

E-Print Network [OSTI]

1 Making Lasting Bonds Through Synthetic Chemistry Tim Hubin and William Kelly Southwestern 73096 580-774-3026 tim.hubin@swosu.edu William J. Kelly, Ph. D. Professor and Chair Department-774-3026 william.kelly@swosu.edu 3. Development Staff Proposed: a. Full curriculum development and initial testing

Hubin, Tim

190

Charge-pumping in a synthetic leaf for harvesting energy from evaporation-driven flows  

E-Print Network [OSTI]

Charge-pumping in a synthetic leaf for harvesting energy from evaporation-driven flows Ruba T storage capacitor by 2­5 V. We provide estimates of power density, energy density, and scavenging. When the gas phase around the plant is at a lower water potential than the saturated soil, water

Maharbiz, Michel

191

Generating Synthetic Meta-data for Georeferenced Video Sakire Arslan Ay  

E-Print Network [OSTI]

to simulate the behavioral patterns of mobile cameras in the synthetic data. The data generation process can the feasibility and applicability of the proposed approach by providing comparisons with real-world data and GIS; H.3.4 [Information Storage and Retrieval]: Systems and Software--Performance eval- uation

Kim, Seon Ho

192

Basics of Polar-Format algorithm for processing Synthetic Aperture Radar images.  

SciTech Connect (OSTI)

The purpose of this report is to provide a background to Synthetic Aperture Radar (SAR) image formation using the Polar Format (PFA) processing algorithm. This is meant to be an aid to those tasked to implement real-time image formation using the Polar Format processing algorithm.

Doerry, Armin Walter

2012-05-01T23:59:59.000Z

193

Synthetic fabrication strategy optimizes the illumination geometry and transport properties of dye-sensitized solar cells.  

E-Print Network [OSTI]

solar cells. Using oriented titanium oxide (TiO2 ) nanotube (NT) arrays has shown promise for dye- sensitized solar cells (DSSCs). High solar conversion efficiency requires that the incident light entersSynthetic fabrication strategy optimizes the illumination geometry and transport properties of dye-sensitized

194

Novel synthetic phytochelatin-based capacitive biosensor for heavy metal ion detection  

E-Print Network [OSTI]

to increasing levels of diverse pollutants. Heavy metals represent some of the most toxic ones not only to pollution by heavy metals, and is trying to remediate, control and minimize such pollution as muchNovel synthetic phytochelatin-based capacitive biosensor for heavy metal ion detection Ibolya

Chen, Wilfred

195

2000 Special Issue Synthetic brain imaging: grasping, mirror neurons and imitation  

E-Print Network [OSTI]

2000 Special Issue Synthetic brain imaging: grasping, mirror neurons and imitation M.A. Arbiba,b,*, A. Billardb , M. Iacobonic , E. Oztopa,b a USC Brain Project, University of Southern California, Los, CA 90089-2520, USA c Division of Brain Mapping, Neuropsychiatric Institute, UCLA School of Medicine

Oztop, Erhan

196

Evaluating speech intelligibility enhancement for HMM-based synthetic speech in noise  

E-Print Network [OSTI]

Evaluating speech intelligibility enhancement for HMM-based synthetic speech in noise Cassia It is possible to increase the intelligibility of speech in noise by enhancing the clean speech signal Valentini-Botinhao, Junichi Yamagishi, Simon King The Centre for Speech Technology Research, University

Edinburgh, University of

197

P16: A distortion-weighted glimpse-based intelligibility metric for modified and synthetic speech  

E-Print Network [OSTI]

for speech enhancement in known noise conditions," in Proc. Interspeech, pp. 1636-1639. M. Cooke, C. Mayo, CP16: A distortion-weighted glimpse-based intelligibility metric for modified and synthetic speech Yan Tang1 and Martin Cooke2,1 Cassia Valentini-Botinhao3 1 Language and Speech Laboratory, University

Edinburgh, University of

198

BIODEGRADATION OF COMPOSITE NONWOVENS MADE OF NATURAL FIBERS AND SYNTHETIC POLYMERS  

E-Print Network [OSTI]

1 BIODEGRADATION OF COMPOSITE NONWOVENS MADE OF NATURAL FIBERS AND SYNTHETIC POLYMERS Ioan I Research Center, New Orleans, LA ABSTRACT Composite nonwovens have been prepared from bagasse and cotton-co-terephthalate) and poly(hydroxy butyrate). Some nonwoven compositions have been treated with flame retardants containing

199

A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples  

E-Print Network [OSTI]

A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples Gwenn E; published 12 November 2002. [1] Basal hydrology is acknowledged as a fundamental control on glacier dynamics of existing basal hydrology models is the treatment of the glacier bed as an isolated system. We present

Flowers, Gwenn

200

Sensor Based Synthetic Actors in a Tennis Game Simulation Hansrudi NOSER  

E-Print Network [OSTI]

Sensor Based Synthetic Actors in a Tennis Game Simulation Hansrudi NOSER Daniel THALMANN Computer@lig.di.epfl.ch; thalmann@lig.di.epfl.ch) Abstract In this article we propose a model of a tennis game simulation and audition. Physical modeling of the ball dynamic and sound rendering enhance realism. An interactive user

Pratt, Vaughan

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Synthetic Aperture Radar Imaging with Motion Estimation and , T. Callaghan1  

E-Print Network [OSTI]

principles a synthetic aperture radar (SAR) imaging and target motion estimation method that is combined of the data into properly calibrated small apertures, (b) motion or platform trajectory perturbation estimation process. X-band persistent surveillance SAR is a specific application that is covered by our

Borcea, Liliana

202

Shallow intraplate earthquakes in Western Australia observed by Interferometric Synthetic Aperture Radar  

E-Print Network [OSTI]

Shallow intraplate earthquakes in Western Australia observed by Interferometric Synthetic Aperture earthquakes in a stable continental region of southwest Western Australia. Both small-magnitude events occur with tectonic processes in this area of Western Australia often initiate in the upper 1 km of crust. Citation

Tregoning, Paul

203

A fluorescent assay for chloride transport; identification of a synthetic anionophore with improved activity  

E-Print Network [OSTI]

A fluorescent assay for chloride transport; identification of a synthetic anionophore with improved on the chloride-sensitive probe, lucigenin, is developed for monitoring chloride transport into vesicles, and used to compare the effectiveness of three steroid- derived transporters. A topic of growing interest

Smith, Bradley D.

204

Birth and Growth of Cavitation Bubbles within Water under Tension Confined in a Simple Synthetic Tree  

E-Print Network [OSTI]

Birth and Growth of Cavitation Bubbles within Water under Tension Confined in a Simple Synthetic. Cavitation can spontaneously occur, nucleating a bubble. We investigate the dynamics of spontaneous or triggered cavitation inside water filled microcavities of a hydrogel. Results show that a stable bubble

Ohl, Claus-Dieter

205

nature biotechnology volume 27 number 12 december 2009 1127 Recent patent applications in synthetic biology  

E-Print Network [OSTI]

for controlling cell function, as a raw material in synthetic biology for reconstructing a biomolecule relative to the expression in the first organism strain prior to its transformation. Advanced Biofuels element having a left inverted repeat region, a right inverted repeat region and a spacer region

Cai, Long

206

Synthetic aggregates prepared from flue gas desulfurization by-products using various binder materials  

SciTech Connect (OSTI)

Flue Gas Desulfurization (FGD) by-products can be converted into environmentally safe and structurally stable aggregates. One type of synthetic aggregate was prepared using an optimum mixture of (FGD) by-products, fly ash, and water. Mineral reactions have been examined using X-ray diffraction and scanning electron microscope.

Bellucci, J.; Graham, U.M.; Hower, J.C.; Robl, T.L. [Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research

1994-12-31T23:59:59.000Z

207

Will Kentucky lead the way in synthetic fuels production? A history lesson  

SciTech Connect (OSTI)

At four times in the history of the United States, synthetic fuels have been used as the energy savior of the country, from the period immediately following the second World War to the mid 1980s when the Synthetic Fuels Corporation was unceremoniously demolished by the Reagan administration. The Center for Applied Energy Research at the University of Kentucky has been a major player in the game and the state of Kentucky has received much funding for synthetic fuels development since the 1970s. The article traces the history of developments in the field. The fate of the development has in the author's opinion been influenced by the misalignment of three 'spheres of influence' - in essence the political economy, environmental/regulatory issues, and the technological innovation process. Synthetic fuels can now become an integral part of what is called a 'multiplex energy strategy' and Kentucky again has the opportunity to build on its prior experience and embrace a new paradigm regarding how clean energy solutions based on gasification technologies can aid the USA. 4 photos.

Musulin, M.

2008-07-01T23:59:59.000Z

208

Change Detection Using Synthetic Aperture Sonar: Preliminary Results from the Larvik Trial  

E-Print Network [OSTI]

detection technology for autonomous underwater vehicles (AUVs) equipped with synthetic aperture sonars (SAS of route survey with unmanned systems, this means repeatedly surveying ports and important transit routes the processing have been proposed, however the field as applied to the underwater environment remains in its

Paris-Sud XI, Université de

209

Hydrogen and minor element incorporation in synthetic rutile G. D. BROMILEY  

E-Print Network [OSTI]

Hydrogen and minor element incorporation in synthetic rutile G. D. BROMILEY 1,2, * AND N. HILAIRET from substitutional defects. KEYWORDS: rutile, hydrogen, substitution, solubility, spectroscopy of lower- valence cations may be charge-balanced by incorporation of hydrogen in the rutile structure

210

Ris-PhD-27(EN) Wind Energy Applications of Synthetic  

E-Print Network [OSTI]

energy planning are addressed here: the study of wind farm wake effects and the potential of using SAR losses are typically 10-20% near the wind farms. Secondly, the potential of using SAR wind mapsRisø-PhD-27(EN) Wind Energy Applications of Synthetic Aperture Radar Merete Bruun Christiansen Risø

211

Design of insulating devices for in vitro synthetic circuits Elisa Franco, Domitilla Del Vecchio and Richard M. Murray  

E-Print Network [OSTI]

Design of insulating devices for in vitro synthetic circuits Elisa Franco, Domitilla Del Vecchio as an insulating device. This circuit is composed of nucleic acids, which can be designed to interact according their functionality. Insulation blocks are crucial to this purpose. Simple direct connection of different synthetic

Murray, Richard M.

212

HOSNY, AMR. Behavior of Concrete Members Containing Lightweight Synthetic Particles. (Under the direction of Dr. Sami Rizkalla.)  

E-Print Network [OSTI]

ABSTRACT HOSNY, AMR. Behavior of Concrete Members Containing Lightweight Synthetic Particles of Lightweight Synthetic Particles (LSP) to normal weight concrete leads to reduction of the unit weight of the concrete by 10 to 20 percent resulting in concrete with unit weights ranging between 120 and 130 lb/ft3

213

Cloud Formation, Evolution and Destruction  

E-Print Network [OSTI]

Chapter 4 Cloud Formation, Evolution and Destruction We now begin to trace the journey towards a star. How long does this take? The answer is surprisingly short: a good many clouds already contain new stars and these stars tend to be young. The typical cloud cannot spend long, if any time at all

Estalella, Robert

214

Fracture Evolution Following a Hydraulic Stimulation within an...  

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

Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir Fracture Evolution...

215

Modeling Texture Evolution during Recrystallization in Aluminum  

E-Print Network [OSTI]

Modeling Texture Evolution during Recrystallization in Aluminum Abhijit Brahme1,2 , Joseph Fridy3, Aluminum, Grain Boundary Mobility, Nucleation, Oriented Growth, Oriented Nucleation, Stored Energy, Monte Carlo Modeling. #12;Modeling Texture Evolution during Recrystallization in Aluminum 2 1. Introduction

Rollett, Anthony D.

216

Landscape Evolution at an Active Plate Margin  

E-Print Network [OSTI]

Landscape Evolution at an Active Plate Margin edited and compiled by David R. Jessey and Robert E;32009 Desert Symposium Table of contents Landscape evolution at an active plate margin: a field trip

de Lijser, Peter

217

Guiding Architects in Selecting Architectural Evolution Alternatives  

SciTech Connect (OSTI)

Although there exist methods and tools to support architecture evolution, the derivation and evaluation of alternative evolution paths are realized manually. In this paper, we introduce an approach, where architecture specification is converted to a graph representation. Based on this representation, we automatically generate possible evolution paths, evalute quality attributes for different architecture configurations, and optimize the selection of a particular path accordingly. We illustrate our approach by modeling the software architecture evolution of a crisis management system.

Ciraci, Selim; Sozer, Hasan; Aksit, Mehmet

2011-09-09T23:59:59.000Z

218

Robotics and Vision Scientist Evolution Robotics  

E-Print Network [OSTI]

Robotics and Vision Scientist Evolution Robotics 1055 E. Colorado Bl., #410 Pasadena, California 91106 (626) 993-3300 09 May 2011 Evolution Robotics Employment Opportunity Profile · Title: Robotics and Vision Scientist · Reports to: VP of Research and Development The Company: Evolution Robotics, Inc

Plotkin, Joshua B.

219

Chemical Evolution of Galaxies: a problem of  

E-Print Network [OSTI]

Chemical Evolution of Galaxies: a problem of Astroarchaelogy Francesca Matteucci, Trieste University Lubljana, February 24, 2014 #12;Chemical Evolution of Galaxies Beatrice Tinsley (27 January 1941- 23 March 1981) She started the field of galactic chemical evolution #12;Collaborators: #12;Outline

Â?umer, Slobodan

220

Investigating Galaxy Evolution with Chandra  

E-Print Network [OSTI]

Chandra observations show the importance of the X-ray band for studying the evolution of galaxies. Binary X-ray sources are an easily detectable tracer of the stellar population. Chandra studies of these populations are giving us insights into the nature and formation of these binaries, and provide the basis for diagnostics of galaxy evolution. With Chandra and XMM-Newton we can explore relatively poorly known aspects of the black hole population of the universe: ultra-luminous X-ray sources, that may be connected with the 'missing' intermediate mass black holes predicted by hierarchical galaxy and black hole formation scenarios; and quiescent supermassive nuclear black holes and their surroundings, as a way to understand the full range of the AGN phenomenon. Finally, the X-ray band provides the only way to explore hot plasmas in galaxies; recent observations are revealing the importance of these plasmas as vehicles of both chemical enrichment and energy.

G. Fabbiano

2005-11-09T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Method for forming a layer of synthetic corrosion products on tubing surfaces  

DOE Patents [OSTI]

A method is provided for forming a synthetic corrosion product layer on tube surfaces. The method utilizes two dissimilar materials with different coefficients of thermal expansion. An object tube and sacrificial tube are positioned one inside the other such that an annular region is created between the two tubes' surfaces. A slurry of synthetic corrosion products is injected into this annular region and the assembly is heat treated. This heat causes the tubes to expand, the inner tube with the higher coefficient of expansion expanding more than the outer tube, thereby creating internal pressures which consolidate the corrosion products and adhere the corrosion products to the tubing surfaces. The sacrificial tube may then be removed by conventional chemical etching or mechanical methods.

Lane, Michael H. (Clifton Park, NY); Salamon, Eugene J. M. (Clifton Park, NY)

1996-01-01T23:59:59.000Z

222

Identification of aluminum scale with the aid of synthetically produced basic aluminum fluoride complexes  

SciTech Connect (OSTI)

Aluminum scaling can be a problem following HF acidizing. In this paper, a series of synthetic aluminum scales was prepared and identified. The aluminum compounds of a field scale were identified with similar procedures. Recent field work showed that the use of acetic acid in the HF acidizing sequences significantly decreased scaling. The role of acetic acid is discussed on the basis of laboratory support of these field data.

Shuchart, C.E. (Halliburton Services, Duncan, OK (United States)); Ali, S.A. (Chevron U.S.A. Inc., New Orleans, LA (United States))

1993-11-01T23:59:59.000Z

223

IFP V4.0:a polar-reformatting image formation processor for synthetic aperture radar.  

SciTech Connect (OSTI)

IFP V4.0 is the fourth generation of an extraordinarily powerful and flexible image formation processor for spotlight mode synthetic aperture radar. It has been successfully utilized in processing phase histories from numerous radars and has been instrumental in the development of many new capabilities for spotlight mode SAR. This document provides a brief history of the development of IFP, a full exposition of the signal processing steps involved, and a short user's manual for the software implementing this latest iteration.

Eichel, Paul H.

2005-09-01T23:59:59.000Z

224

Synthetic cytokinin effects on vegetative propagation of Lilium longiflorum Thunb. 'Ace'  

E-Print Network [OSTI]

A ', ~/~ '- . g. ~ember August 1974 ABSTRACT Synthetic Cytokinin Effects on Vegetative Propagation oi' Lili 1 ~if1 , h O. 'Ace'. (hog : 1974I Cathy Marie Wilhite, B. S. , Texas Tech University Chairman of Advisory Committee: Dr. A. E. Nightingale Foliar... of her commi ttee, Drs. A. E. Nightingale, H. T. Blackhurst, and M. H. Milford, for their patience, guidance, and understanding. She also appreciates the encouragement of the faculty, secretaries, and fellow graduate students in the Horticulture...

Wilhite, Cathy Marie

1974-01-01T23:59:59.000Z

225

Synthetic fuels and the environment: an environmental and regulatory impacts analysis  

SciTech Connect (OSTI)

Since July 1979 when DOE/EV-0044 report Environmental Analysis of Synthetic Liquid fuels was published the synthetic fuels program proposals of the Administration have undergone significant modifications. The program year for which the development goal of 1.5 million barrels per day is to be reached has been changed from 1990 to 1995. The program plan is now proposed to have two stages to ensure, among other things, better environmental protection: an initial stage emphasizing applied research and development (R and D), including environmental research, followed by a second stage that would accelerate deployment of those synthetic fuel technologies then judged most ready for rapid deployment and economic operation within the environmental protection requirements. These program changes have significantly expanded the scope of technologies to be considered in this environmental analysis and have increased the likelihood that accelerated environmental R and D efforts will be successful in solving principal environmental and worker safety concerns for most technologies prior to the initiation of the second stage of the accelerated deployment plan. Information is presented under the following section headings: summary; study description; the technologies and their environmental concerns (including, coal liquefaction and gasification, oil shale production, biomass and urban waste conversion); regulatory and institutional analyses; and environmental impacts analysis (including air and water quaility analyses, impacts of carbon dioxide and acid rain, water availability, solid and hazardous wastes, coal mining environmental impacts, transportation issues, community growth and change, and regional impacts). Additional information is presented in seventeen appendixes. (JGB)

None

1980-06-01T23:59:59.000Z

226

The Geography of Evolution and the Evolution of Geography  

E-Print Network [OSTI]

. 1980;6:383–96. Gulick JT. On the variation of species as related to their geographic distribution, illustrated by the Achatinellidae. Nature. 1872;6:222–4. Jordan DS. The law of geminate species. Am Nat. 1908;42:73–80. Lieberman BS. Paleobiogeography... this pattern helped convince Darwin that evolution had happened, he later came to de-emphasize allopatric speciation, particularly in Darwin (1859). There he held that rather than geographic isolation, it was primar- ily competition that led to the formation...

Lieberman, Bruce S.

2012-01-01T23:59:59.000Z

227

Synthetic Fuel  

ScienceCinema (OSTI)

Two global energy priorities today are finding environmentally friendly alternatives to fossil fuels, and reducing greenhouse gass Two global energy priorities today are finding environmentally friendly alternatives to fossil fuels, and reducing greenhous

Idaho National Laboratory - Steve Herring, Jim O'Brien, Carl Stoots

2010-01-08T23:59:59.000Z

228

Assessment of radial image distortion and spherical aberration on three-dimensional synthetic aperture particle image velocimetry measurements  

E-Print Network [OSTI]

This thesis presents a numerical study of the effects of radial image distortion and spherical aberration on reconstruction quality of synthetic aperture particle image velocimetry (SAPIV) measurements. A simulated SAPIV ...

Kubaczyk, Daniel Mark

2013-01-01T23:59:59.000Z

229

Bridging gaps in synthetic biology oversight : iGEM as a testbed for proactive, adaptive risk management  

E-Print Network [OSTI]

On the surface, the emerging field of synthetic biology looks highly similar to that of genetic engineering. However, the two fields are based upon divergent underlying logic structures. Whereas genetic engineering affects ...

McNamara, Julie H. (Julie Hutton)

2014-01-01T23:59:59.000Z

230

Part Mining for Synthetic Biology (2013 DOE JGI Genomics of Energy and Environment 8th Annual User Meeting)  

SciTech Connect (OSTI)

Chris Voigt from MIT delivers the opening keynote on "Part Mining for Synthetic Biology" at the 8th Annual Genomics of Energy & Environment Meeting on March 26, 2013 in Walnut Creek, Calif.

Voigt, Chris [MIT

2013-03-01T23:59:59.000Z

231

The potential utilization of nuclear hydrogen for synthetic fuels production at a coal–to–liquid facility / Steven Chiuta.  

E-Print Network [OSTI]

??The production of synthetic fuels (synfuels) in coal–to–liquids (CTL) facilities has contributed to global warming due to the huge CO2 emissions of the process. This… (more)

Chiuta, Steven

2010-01-01T23:59:59.000Z

232

Effect of degree of synthetic lightweight aggregate pre-wetting on the freeze-thaw durability of lightweight concrete  

E-Print Network [OSTI]

EFFECT OF DEGREE OF SYNTHETIC LIGHTWEIGHT AGGREGATE PRE-WETTING ON THE FREEZE-THAW DURABILITY OF LIGHTWEIGHT CONCRETE A Thesis By CHANDRAKANT N. KANABAR Submitted to the Graduate College of the Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1966 Major Subject: Civil Engineering EFFECT OF DEGREE OF SYNTHETIC LIGHTWEIGHT AGGREGATE PRE-WETTING ON THE FREEZE-THAW DURABILITY OF LIGHTWEIGHT CONCRETE A Thesis By CHANDRAKANT N. KANABAR Approved...

Kanabar, C. N

1966-01-01T23:59:59.000Z

233

Physical characterization of magmatic liquids. [Ultrasonic and Brillouin Scattering Studies of Natural and Synthetic Silicates and Oxides  

SciTech Connect (OSTI)

This report describes a research project that was conducted from August 15, 1985 to February 28, 1992. The project was based on the ultrasonic studies of natural and synthetic silicate melts, and the study of Brillouin scattering of synthetic silicates and oxides. Measurements of the compressional wave velocity and attenuation can be established using the ultrasonic methods. Temperature dependences of silicates can be established by the Brillouin scattering. (MB)

Manghnani, M.H.

1992-06-05T23:59:59.000Z

234

The Evolution of Starburst Galaxies  

E-Print Network [OSTI]

I review the properties of starburst galaxies in the nearby and distant universe to decipher their evolution as a distinct extragalactic class. The physical processes and environments of massive star-formation appear to be similar out to z = 4, although the modes of triggering are likely quite different, varied, and still evolving. This is argued with the use of a structural system that measures the physical conditions of galaxies. This system provides evidence that starbursts at high-z are triggered by merging, while nearby starbursts have a host of different triggering mechanisms, none of which, besides merging, are currently known to exist at z > 2.

Christopher J. Conselice

2000-12-21T23:59:59.000Z

235

Evolution of the Roycean Philosophy  

E-Print Network [OSTI]

of the Roycean philosophy. EVOLUTION OP THE ROYCEAN PHILOSOPHY .. A THESIS. By E. H. Parisho. Bib I lography. McCiintock and Strong Encyclopaedia. 'tfogf^tV--- S t u d e n t h i s t o r y of Philosophy. Locke Concerning Human Understanding. Spinoza... and the Individual. If. fioy c ©7 -!-"r - - v <—Conception of God. Introduction. I D E A L I S M , The thought that unity runs through a l l experience. The doctrine of Idealism i s usually thought of as beginning with Plato, " The term ideas was older than...

Parisho, Eli Harris

1909-01-01T23:59:59.000Z

236

Adiabatic theorems for generators of contracting evolutions  

E-Print Network [OSTI]

We develop an adiabatic theory for generators of contracting evolution on Banach spaces. This provides a uniform framework for a host of adiabatic theorems ranging from unitary quantum evolutions through quantum evolutions of open systems generated by Lindbladians all the way to classically driven stochastic systems. In all these cases the adiabatic evolution approximates, to lowest order, the natural notion of parallel transport in the manifold of instantaneous stationary states. The dynamics in the manifold of instantaneous stationary states and transversal to it have distinct characteristics: The former is irreversible and the latter is transient in a sense that we explain. Both the gapped and gapless cases are considered. Some applications are discussed.

J. E. Avron; M. Fraas; G. M. Graf; P. Grech

2012-06-04T23:59:59.000Z

237

Comparative economics: evolution and the modern economy  

E-Print Network [OSTI]

A comparison of primate economies. Journal of Bioeconomics,1999). Complexity and the economy. Science, 284, 107–109.evolution and the modern economy Ghabrial, A. S. , &

Vermeij, Geerat J.

2009-01-01T23:59:59.000Z

238

Synthetic Biology and the U.S. Biotechnology Regulatory System: Challenges and Options  

SciTech Connect (OSTI)

Synthetic Biology and the U.S. Biotechnology Regulatory System: Challenges and Options Sarah R. Carter, Ph.D., J. Craig Venter Institute; Michael Rodemeyer, J.D., University of Virginia; Michele S. Garfinkel, Ph.D., EMBO; Robert M. Friedman, Ph.D., J. Craig Venter Institute In recent years, a range of genetic engineering techniques referred to as “synthetic biology” has significantly expanded the tool kit available to scientists and engineers, providing them with far greater capabilities to engineer organisms than previous techniques allowed. The field of synthetic biology includes the relatively new ability to synthesize long pieces of DNA from chemicals, as well as improved methods for genetic manipulation and design of genetic pathways to achieve more precise control of biological systems. These advances will help usher in a new generation of genetically engineered microbes, plants, and animals. The JCVI Policy Center team, along with researchers at the University of Virginia and EMBO, examined how well the current U.S. regulatory system for genetically engineered products will handle the near-term introduction of organisms engineered using synthetic biology. In particular, the focus was on those organisms intended to be used or grown directly in the environment, outside of a contained facility. The study concludes that the U.S. regulatory agencies have adequate legal authority to address most, but not all, potential environmental, health and safety concerns posed by these organisms. Such near-term products are likely to represent incremental changes rather than a marked departure from previous genetically engineered organisms. However, the study also identified two key challenges for the regulatory system, which are detailed in the report. First, USDA’s authority over genetically engineered plants depends on the use of an older engineering technique that is no longer necessary for many applications. The shift to synthetic biology and other newer genetic engineering techniques will leave many engineered plants without any pre-market regulatory review. Second, the number and diversity of engineered microbes for commercial use will increase in the near future, challenging EPA’s resources, expertise, and perhaps authority to regulate them. For each of these challenges, the report sets out a series of options, including an analysis of the advantages and disadvantages of each option from a variety of perspectives, for policy makers to consider. Policy responses will depend on the trade-offs chosen among competing considerations. This report, funded by the Department of Energy with additional funds from the Alfred P. Sloan Foundation, is the result of a two-year process that included interviews, commissioned background papers, discussions, and two workshops that sought input from a wide range of experts, including U.S. federal agency regulators, legal and science policy experts, representatives from the biotechnology indus¬try, and non-governmental organiza¬tions. This cross-section of views informed this report, but the conclusions are solely those of the authors. An Executive Summary, full Report, and background papers are available at: http://www.jcvi.org/cms/research/projects/synthetic-biology-and-the-us-biotechnology-regulatory-system/overview/

Carter, Sarah R. [J. Craig Venter Institute; Rodemeyer, Michael [University of Virginia; Garfinkel, Michele S. [EMBO; Friedman, Robert M [J. Craig Venter Institute

2014-05-01T23:59:59.000Z

239

Nine years of spatial and temporal evolution of the La Valette landslide observed by SAR interferometry  

E-Print Network [OSTI]

and TANDEM phase. Displacement values of the landslide have been deduced from the Synthetic Apenture Radan

Delacourt, Christophe

240

A Monte Carlo synthetic-acceleration method for solving the thermal radiation diffusion equation  

SciTech Connect (OSTI)

We present a novel synthetic-acceleration-based Monte Carlo method for solving the equilibrium thermal radiation diffusion equation in three spatial dimensions. The algorithm performance is compared against traditional solution techniques using a Marshak benchmark problem and a more complex multiple material problem. Our results show that our Monte Carlo method is an effective solver for sparse matrix systems. For solutions converged to the same tolerance, it performs competitively with deterministic methods including preconditioned conjugate gradient and GMRES. We also discuss various aspects of preconditioning the method and its general applicability to broader classes of problems.

Evans, Thomas M., E-mail: evanstm@ornl.gov [Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37831 (United States); Mosher, Scott W., E-mail: moshersw@ornl.gov [Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37831 (United States); Slattery, Stuart R., E-mail: sslattery@wisc.edu [University of Wisconsin–Madison, 1500 Engineering Dr., Madison, WI 53716 (United States); Hamilton, Steven P., E-mail: hamiltonsp@ornl.gov [Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37831 (United States)

2014-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

A Monte Carlo Synthetic-Acceleration Method for Solving the Thermal Radiation Diffusion Equation  

SciTech Connect (OSTI)

We present a novel synthetic-acceleration based Monte Carlo method for solving the equilibrium thermal radiation diusion equation in three dimensions. The algorithm performance is compared against traditional solution techniques using a Marshak benchmark problem and a more complex multiple material problem. Our results show that not only can our Monte Carlo method be an eective solver for sparse matrix systems, but also that it performs competitively with deterministic methods including preconditioned Conjugate Gradient while producing numerically identical results. We also discuss various aspects of preconditioning the method and its general applicability to broader classes of problems.

Evans, Thomas M [ORNL] [ORNL; Mosher, Scott W [ORNL] [ORNL; Slattery, Stuart [University of Wisconsin, Madison] [University of Wisconsin, Madison

2014-01-01T23:59:59.000Z

242

Synthetic Entries Into the Bicyclo[2.1.1]Hexane System  

E-Print Network [OSTI]

Rearrangements 1 B. Ramberg-Backlund Reaction # 11 a. Historical 11 b. Mechanism * .. 12 1. Proton Abstraction M 2* Halide Loss and Cyclisatlon . 14 3. Extrusion of Sulfur Dioxide 18 c. Stereochemistry # 19 d. Summary . 20 e. Synthetic Applications 21 C... 87 with Zinc Bromide 59 K. Reaction of Epoxide 87 with Lithium Perchlorate 60 L. Reaction of Epoxide 87 with Lithium Tetrafiuoroborato.. 60 M. Moplnone (108) 61 M. Enol Acetate of Nop!none, 109 61 0. Brominetion of Enol Acetate 103 61 (A...

May, Kenneth Dwight

1974-01-01T23:59:59.000Z

243

Structural algorithm to reservoir reconstruction using passive seismic data (synthetic example)  

SciTech Connect (OSTI)

Using of passive seismic observations to detect a reservoir is a new direction of prospecting and exploration of hydrocarbons. In order to identify thin reservoir model we applied the modification of Gaussian elimination method in conditions of incomplete synthetic data. Because of the singularity of a matrix conventional method does not work. Therefore structural algorithm has been developed by analyzing the given model as a complex model. Numerical results demonstrate of its advantage compared with usual way of solution. We conclude that the gas reservoir is reconstructed by retrieving of the image of encasing shale beneath it.

Smaglichenko, Tatyana A.; Volodin, Igor A.; Lukyanitsa, Andrei A.; Smaglichenko, Alexander V.; Sayankina, Maria K. [Oil and Gas Research Institute, Russian Academy of Science, Gubkina str.3, 119333, Moscow (Russian Federation); Faculty of Computational Mathematics and Cybernetics, M.V. Lomonosov Moscow State University, Leninskie gory, 1, str.52,Second Teaching Building.119991 Moscow (Russian Federation); Shmidt's Institute of Physics of the Earth, Russian Academy of Science, Bolshaya Gruzinskaya str. 10, str.1, 123995 Moscow (Russian Federation); Oil and Gas Research Institute, Russian Academy of Science, Gubkina str.3, 119333, Moscow (Russian Federation)

2012-09-26T23:59:59.000Z

244

Synthetic Efforts Toward Palau'amine Doug Behenna, Ryan McFadden  

E-Print Network [OSTI]

Synthetic Efforts Toward Palau'amine Doug Behenna, Ryan McFadden Eric Ashley, Jenn Stockdill Cl H2N R1 R2 N N H N HN O NH2 H N NH H H OH NH2 Cl H2N R2 R1 R1 = R2 = H Palau'amine R1 = H, R2 = Br 4-Bromo Palau'amine R1 = R2 = Br Dibromo Palau'amine R1 = R2 = H Styloguanidine R1 = H, R2 = Br 3

Stoltz, Brian M.

245

Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar  

DOE Patents [OSTI]

Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.

Doerry, Armin W. (Albuquerque, NM); Heard, Freddie E. (Albuquerque, NM); Cordaro, J. Thomas (Albuquerque, NM)

2008-06-24T23:59:59.000Z

246

Self-assembly of synthetic and biological components in water using cucurbit[8]uril  

E-Print Network [OSTI]

. Current technology can successfully build assemblies from the bottom up, assembling complex architectures using such building blocks as DNA,14,24–26 peptides,27,28 saccharides,29,30 lipids,31–33 as well as synthetic polymer com- ponents.34–37 1900 1950... nature of an aqueous envir- onment are still being explored, and some notable examples are provided in Fig. 1.3. 3 Chapter 1 Introduction It is worthy of note that in each case, multiple non-covalent interactions work in concert, as is the case in nature...

Zayed, Jameel Majed

2012-02-07T23:59:59.000Z

247

A novel synthetic aperture technique for breast tomography with toroidal arrays  

SciTech Connect (OSTI)

Ultrasound is commonly used as an adjunct to mammography for diagnostic evaluation of suspicions arising from breast cancer screening. As an alternative to conventional sonography that uses hand-held transducers, toroidal array probes that encircle the breast immersed in a water bath have been investigated for ultrasound tomography. This paper introduces a new method for three-dimensional synthetic aperture diffraction tomography that maximizes the resolution in the scanning direction and provides quantitative reconstructions of the acoustic properties of the object. The method is validated by means of numerical simulations.

Huang, Lianjie [Los Alamos National Laboratory; Simonetti, Francesco [IMPERIAL COLLEGE

2009-01-01T23:59:59.000Z

248

Temporal Evolution of Social Innovation  

E-Print Network [OSTI]

Acceptance of an innovation can occur through mutliple exposures to individuals who have already accepted it. Presented here is a model to trace the evolution of an innovation in a social network with a preference $\\lambda$, amidst topological constraints specified mainly by connectivity, $k$ and population size, $N_k$. With the interplay between properties of innovation and network structure, the model attempts to explain the variations in patterns of innovations across social networks. Time in which the propagation attains highest velocity depends on $\\lambda^{-2}k^{-2}N_{k}^{1/2}$. Dynamics in random networks may lead or lag behind that in scale-free networks depending on the average connectivity. Hierarchical propagation is evident across connectivity classes within scale-free networks, as well as across random networks with distinct topological indices. For highly preferred innovations, the hierarchy observed within scale-free networks tends to be insignificant. The results have implications for administ...

Kulkarni, Varsha S

2014-01-01T23:59:59.000Z

249

EARLY EVOLUTION OF PRESTELLAR CORES  

SciTech Connect (OSTI)

Prestellar cores are approximated by singular polytropic spheres. Their early evolution is studied analytically with a Bondi-like scheme. The considered approximation is meaningful for polytropic exponents {gamma} between 0 and 6/5, implying radial power-law density profiles between r {sup -1} and r {sup -2.5}. Gravitationally unstable Jeans and Bonnor-Ebert masses differ at most by a factor of 3.25. Tidally stable prestellar cores must have a mean density contrast {approx}> 8 with respect to the external parent cloud medium. The mass-accretion rate relates to the cube of equivalent sound speed, as in Shu's seminal paper. The prestellar masses accreted over 10{sup 5} years cover the whole stellar mass spectrum; they are derived in simple closed form, depending only on the polytropic equation of state. The stellar masses that can be formed via strict conservation of angular momentum are at most of the order of a brown dwarf.

Horedt, G. P., E-mail: g.horedt@online.de [Kronwinkler 50, D-81245, Munich (Germany)

2013-08-20T23:59:59.000Z

250

Chemical Evolution of the Galaxy  

E-Print Network [OSTI]

Standard models for the chemical evolution of the Galaxy are reviewed with particular emphasis on the history of the abundance gradients in the disk. The effects on the disk structure and metallicity of gas accretion are discussed, showing that a significant fraction of the current disk mass has been accreted in the last Gyrs and that the chemical abundances of the infalling gas can be non primordial but should not exceed 0.3 Z(sun). The distributions with time and with galactocentric distance of chemical elements are discussed, comparing the observational data with the corresponding theoretical predictions by standard models, which reproduce very well the ISM abundances at various epochs, but not equally well all the features derived from observations of old stellar objects.

M. Tosi

1994-11-15T23:59:59.000Z

251

Brain Evolution Relevant to P. Thomas Schoenemann  

E-Print Network [OSTI]

Brain Evolution Relevant to Language P. Thomas Schoenemann James Madison University 1. Introduction The evolution of language obviously presupposes a brain that made language possible. At the same time, given of the human brain must have been language. Given that language is at least as much a cultural

Schoenemann, P. Thomas

252

Evolution of the Size and Functional Areas  

E-Print Network [OSTI]

Evolution of the Size and Functional Areas of the Human Brain P. Thomas Schoenemann Department-6570/06/1021-0379$20.00 Key Words neuroanatomy, encephalization, behavior, adaptation, selection Abstract The human brain to understand basic principles of brain evolution that appear to operate across broad classes of organisms

Schoenemann, P. Thomas

253

Evolution towards, in, and beyond Object Databases  

E-Print Network [OSTI]

Evolution towards, in, and beyond Object Databases Marc H. Scholl and Markus Tresch Faculty ``evolution'' in the database arena. This paper tries to categorize some of these into a unique framework of ``external services'' to enrich DBMS functionalities. The following are presented in more detail: first, we

Scholl, Marc H.

254

Software Architecture Evolution Olivier Barais1  

E-Print Network [OSTI]

1 Software Architecture Evolution Olivier Barais1 , Anne Franc¸oise Le Meur2 , Laurence Duchien2 and detailed treatment of the var- ious state-of-the-art approaches to evolving software architectures. Furthermore, we discuss one particular framework for software architecture evolution in more detail. 1

Paris-Sud XI, Université de

255

Evolution of self-incompatibility: Early Views  

E-Print Network [OSTI]

Evolution of self-incompatibility: Early Views: Whitehouse (1950): 1. Sudden rise of angiosperms by Whitehouse (1950). Isolation of components of the self-incompatibilities paved the way to study the evolution of SIs Matton et al. (1994): Molecular data supports Bateman. Three self-incompatibility systems

Bhattacharyya, Madan Kumar

256

2, 879921, 2006 Ice-sheet evolution  

E-Print Network [OSTI]

CPD 2, 879­921, 2006 Ice-sheet evolution during the last climatic cycle S. Charbit et al. Title reconstructions of the Northern Hemisphere ice sheets through the last glacial-interglacial cycle S. Charbit1 , C­921, 2006 Ice-sheet evolution during the last climatic cycle S. Charbit et al. Title Page Abstract

Boyer, Edmond

257

Calculating the vulnerability of synthetic polymers to autoignition during nuclear flash. Final report  

SciTech Connect (OSTI)

The purpose of our investigation was to determine if the rapid progression of fire to flashover conditions in a furnished room, observed in a 1953 nuclear weapons test at the Nevada Test Site (the Encore Event), might be typical behavior rather than an aberration. If flashover under such conditions is indeed likely, this phenomenon is worth pursuing in view of the increased threat to buildings and human life from possible large-scale fires. We placed special emphasis on fires that occurred in modern rooms, i.e., ones furnished with upholstery and drapery materials made from synthetic polymers. Examination of photochemical processes showed them to be an unlikely explanation, either in Encore or in the future. Our calculation of rapid radiant-heating behavior of a few materials demonstrated that fabrics and fabric-covered foams would exceed their autoignition temperature when exposed to a 25-cal/cm/sup 2/ fluence from a 1-Mt air burst weapon. Because synthetic polymers have higher heating values and release heat faster during combustion than do the cellulosics used in the Encore experiment, early flashover should not be unexpected in contemporary households. However, the far-field thermal fluence required would be higher because of the absorption of thermal energy by windows and window coverings. Because of the complexity of the problem, carefully planned, full-scale experiments will be needed to finally answer the question. 39 refs., 9 figs., 8 tabs.

Hickman, R.; Reitter, T.

1985-01-01T23:59:59.000Z

258

A model for improving microbial biofuel production using a synthetic feedback loop  

SciTech Connect (OSTI)

Cells use feedback to implement a diverse range of regulatory functions. Building synthetic feedback control systems may yield insight into the roles that feedback can play in regulation since it can be introduced independently of native regulation, and alternative control architectures can be compared. We propose a model for microbial biofuel production where a synthetic control system is used to increase cell viability and biofuel yields. Although microbes can be engineered to produce biofuels, the fuels are often toxic to cell growth, creating a negative feedback loop that limits biofuel production. These toxic effects may be mitigated by expressing efflux pumps that export biofuel from the cell. We developed a model for cell growth and biofuel production and used it to compare several genetic control strategies for their ability to improve biofuel yields. We show that controlling efflux pump expression directly with a biofuel-responsive promoter is a straight forward way of improving biofuel production. In addition, a feed forward loop controller is shown to be versatile at dealing with uncertainty in biofuel production rates.

Dunlop, Mary; Keasling, Jay; Mukhopadhyay, Aindrila

2011-07-14T23:59:59.000Z

259

Cytotoxicity of synthetic cannabinoids on primary neuronal cells of the forebrain: the involvement of cannabinoid CB{sub 1} receptors and apoptotic cell death  

SciTech Connect (OSTI)

The abuse of herbal products containing synthetic cannabinoids has become an issue of public concern. The purpose of this paper was to evaluate the acute cytotoxicity of synthetic cannabinoids on mouse brain neuronal cells. Cytotoxicity induced by synthetic cannabinoid (CP-55,940, CP-47,497, CP-47,497-C8, HU-210, JWH-018, JWH-210, AM-2201, and MAM-2201) was examined using forebrain neuronal cultures. These synthetic cannabinoids induced cytotoxicity in the forebrain cultures in a concentration-dependent manner. The cytotoxicity was suppressed by preincubation with the selective CB{sub 1} receptor antagonist AM251, but not with the selective CB{sub 2} receptor antagonist AM630. Furthermore, annexin-V-positive cells were found among the treated forebrain cells. Synthetic cannabinoid treatment induced the activation of caspase-3, and preincubation with a caspase-3 inhibitor significantly suppressed the cytotoxicity. These synthetic cannabinoids induced apoptosis through a caspase-3-dependent mechanism in the forebrain cultures. Our results indicate that the cytotoxicity of synthetic cannabinoids towards primary neuronal cells is mediated by the CB{sub 1} receptor, but not by the CB{sub 2} receptor, and further suggest that caspase cascades may play an important role in the apoptosis induced by these synthetic cannabinoids. In conclusion, excessive synthetic cannabinoid abuse may present a serious acute health concern due to neuronal damage or deficits in the brain. - Highlights: • Synthetic cannabinoids (classical cannabinoids, non-classical cannabinoids, and aminoalkylindole derivatives) induce cytotoxicity in mouse forebrain cultures. • Synthetic cannabinoid-induced cytotoxicity towards forebrain cultures is mediated by the CB{sub 1} receptor, but not by the CB{sub 2} receptor, and involves caspase-dependent apoptosis. • A high concentration of synthetic cannabinoids may be toxic to neuronal cells that express CB{sub 1} receptors.

Tomiyama, Ken-ichi; Funada, Masahiko, E-mail: mfunada@ncnp.go.jp

2014-01-01T23:59:59.000Z

260

US Synthetic Corp (TRL 4 Component)- The Development of Open, Water Lubricated Polycrystalline Diamond Thrust Bearings for use in Marine Hydrokinetic (MHK) Energy Machines  

Broader source: Energy.gov [DOE]

US Synthetic Corp (TRL 4 Component) - The Development of Open, Water Lubricated Polycrystalline Diamond Thrust Bearings for use in Marine Hydrokinetic (MHK) Energy Machines

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Gas-to-liquids synthetic fuels for use in fuel cells : reformability, energy density, and infrastructure compatibility.  

SciTech Connect (OSTI)

The fuel cell has many potential applications, from power sources for electric hybrid vehicles to small power plants for commercial buildings. The choice of fuel will be critical to the pace of its commercialization. This paper reviews the various liquid fuels being considered as an alternative to direct hydrogen gas for the fuel cell application, presents calculations of the hydrogen and carbon dioxide yields from autothermal reforming of candidate liquid fuels, and reports the product gas composition measured from the autothermal reforming of a synthetic fuel in a micro-reactor. The hydrogen yield for a synthetic paraffin fuel produced by a cobalt-based Fischer-Tropsch process was found to be similar to that of retail gasoline. The advantages of the synthetic fuel are that it contains no contaminants that would poison the fuel cell catalyst, is relatively benign to the environment, and could be transported in the existing fuel distribution system.

Ahmed, S.; Kopasz, J. P.; Russell, B. J.; Tomlinson, H. L.

1999-09-08T23:59:59.000Z

262

The Mechanisms of Oxygen Reduction and Evolution Reactions in...  

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

The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries. The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous...

263

Beneath the Surface of Giant Planets: Evolution, Structure, and Composition  

E-Print Network [OSTI]

iii of Giant Expolanets 3.3.2 PlanetEvolution of Giant Planets . . . . . . . . . . . 2 Coupled3 Applications of Giant Planet Thermal Evolution Model 3.1

Kelly Miller, Neil L.

2013-01-01T23:59:59.000Z

264

avian sensory evolution: Topics by E-print Network  

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

naturalist august 1999 Evolution of Avian Plumage Dichromatism Environmental Sciences and Ecology Websites Summary: vol. 154, no. 2 the american naturalist august 1999 Evolution of...

265

Atomic-Scale Simulations of Cascade Overlap and Damage Evolution...  

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

Atomic-Scale Simulations of Cascade Overlap and Damage Evolution in Silicon Carbide. Atomic-Scale Simulations of Cascade Overlap and Damage Evolution in Silicon Carbide. Abstract:...

266

Fracture Evolution Following a Hydraulic Stimulation within an...  

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

Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir DOE Geothermal Peer Review...

267

HIV virus spread and evolution studied through computer modeling  

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

HIV and evolution studied through computer modeling HIV virus spread and evolution studied through computer modeling This approach distinguishes between susceptible and infected...

268

HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution...  

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

HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution) Model Analysis HyDIVE (Hydrogen Dynamic Infrastructure and Vehicle Evolution) Model Analysis Presentation by NREL's...

269

Enzyme-free translation of DNA into sequence-defined synthetic polymers structurally unrelated  

E-Print Network [OSTI]

report the development of a DNA-templated translation system that enables the enzyme-free translation developed here into a complete cycle of translation, coding sequence replication, template regeneration biopolymers enables the production, function and evolution of the macromolecules of life. In contrast, methods

Liu, David R.

270

Vacuum energy and cosmological evolution  

E-Print Network [OSTI]

An expanding universe is not expected to have a static vacuum energy density. The so-called cosmological constant $\\Lambda$ should be an approximation, certainly a good one for a fraction of a Hubble time, but it is most likely a temporary description of a true dynamical vacuum energy variable that is evolving from the inflationary epoch to the present day. We can compare the evolving vacuum energy with a Casimir device where the parallel plates slowly move apart ("expand"). The total vacuum energy density cannot be measured, only the effect associated to the presence of the plates, and then also their increasing separation with time. In the universe there is a nonvanishing spacetime curvature $R$ as compared to Minkowskian spacetime that is changing with the expansion. The vacuum energy density must change accordingly, and we naturally expect $\\delta\\Lambda\\sim R\\sim H^2$. A class of dynamical vacuum models that trace such rate of change can be constructed. They are compatible with the current cosmological data, and conveniently extended can account for the complete cosmic evolution from the inflationary epoch till the present days. These models are very close to the $\\Lambda$CDM model for the late universe, but very different from it at the early times. Traces of the inherent vacuum dynamics could be detectable in our recent past.

Joan Sola

2014-03-03T23:59:59.000Z

271

A model for forming airborne synthetic aperture radar images of underground targets  

SciTech Connect (OSTI)

Synthetic Aperture Radar (SAR) from an airborne platform has been proposed for imaging targets beneath the earth`s surface. The propagation of the radar`s energy within the ground, however, is much different than in the earth`s atmosphere. The result is signal refraction, echo delay, propagation losses, dispersion, and volumetric scattering. These all combine to make SAR image formation from an airborne platform much more challenging than a surface imaging counterpart. This report treats the ground as a lossy dispersive half-space, and presents a model for the radar echo based on measurable parameters. The model is then used to explore various imaging schemes, and image properties. Dynamic range is discussed, as is the impact of loss on dynamic range. Modified window functions are proposed to mitigate effects of sidelobes of shallow targets overwhelming deeper targets.

Doerry, A.W.

1994-01-01T23:59:59.000Z

272

Metabolic engineering of microorganisms for biofuels production: from bugs to synthetic biology to fuels  

SciTech Connect (OSTI)

The ability to generate microorganisms that can produce biofuels similar to petroleum-based transportation fuels would allow the use of existing engines and infrastructure and would save an enormous amount of capital required for replacing the current infrastructure to accommodate biofuels that have properties significantly different from petroleum-based fuels. Several groups have demonstrated the feasibility of manipulating microbes to produce molecules similar to petroleum-derived products, albeit at relatively low productivity (e.g. maximum butanol production is around 20 g/L). For cost-effective production of biofuels, the fuel-producing hosts and pathways must be engineered and optimized. Advances in metabolic engineering and synthetic biology will provide new tools for metabolic engineers to better understand how to rewire the cell in order to create the desired phenotypes for the production of economically viable biofuels.

Kuk Lee, Sung; Chou, Howard; Ham, Timothy S.; Soon Lee, Taek; Keasling, Jay D.

2009-12-02T23:59:59.000Z

273

Environmentally based siting assessment for synthetic-liquid-fuels facilities. Final report  

SciTech Connect (OSTI)

A detailed assessment of the major environmental constraints to siting a synthetic fuels industry and the results of that assessment are used to determine on a regional basis the potential for development of such an industry with minimal environmental conflicts. Secondly, the ability to mitigate some of the constraining impacts through alternative institutional arrangements, especially in areas that are judged to have a low development potential is also assessed. Limitations of the study are delineated, but specifically, the study is limited geographically to well-defined boundaries that include the prime coal and oil shale resource areas. The critical factors used in developing the framework are air quality, water availability, socioeconomic capacity, ecological sensitivity, environmental health, and the management of Federally owned lands. (MCW)

None

1980-01-01T23:59:59.000Z

274

ERCB updates estimated reserves of crude bitumen and synthetic crude oil  

SciTech Connect (OSTI)

The Alberta Energy Resources Conservation Board prepares yearly updates of Alberta reserves of crude bitumen and synthetic crude oil. The latest figures are as of the end of 1985. Alberta's crude bitumen reserves are contained in designated deposits with the oil sand areas of Athabasca, Cold Lake, and Peace River. The total initial volume of crude bitumen in-place for the designated deposits at December 31, 1985 was estimated as 266.4 billion cubic meters. Within the potentially mineable areas, the initial mineable volume in-place of crude bitumen was established to be 11.9 billion cubic meters. After allowing for surface facilities (plant sites, tailings ponds, discard dumps), environmental protection corridors along major rivers, isolated mineable areas, and assuming a combined mining/extraction recovery factor of 0.78, the resulting initial established mineable reserve of crude bitumen is estimated to be 5.2 billion cubic meters. Data are presented in three tables.

Not Available

1986-09-01T23:59:59.000Z

275

Low-Temperature Heat Capacity and Localized Vibrational Modes in Natural and Synthetic Tetrahedrites  

SciTech Connect (OSTI)

The heat capacity of natural (Cu12-x (Fe, Zn, Ag)x(Sb, As)4S13) and synthetic (Cu12-xZnxSb4S13 with x=0, 1, 2) tetrahedrite compounds was measured between 2K and 380K. It was found that the temperature dependence of the heat capacity can be described using a Debye term and three Einstein oscillators with characteristic temperatures that correspond to energies of ~1.0 meV, ~2.8 meV and ~8.4 meV. The existence of localized vibration modes, which are assigned to the displacements of the trigonally coordinated Cu atoms in the structure, is discussed in the context of anharmonicity and its effect on the low lattice thermal conductivity exhibited by these compounds.

Lara-Curzio, Edgar [ORNL] [ORNL; May, Andrew F [ORNL] [ORNL; Delaire, Olivier A [ORNL] [ORNL; McGuire, Michael A [ORNL] [ORNL; Lu, Xu [Michigan State University] [Michigan State University; Li, Cheng-Yun [Michigan State University] [Michigan State University; Case, Eldon D [Michigan State University, East Lansing] [Michigan State University, East Lansing; Morelli, Donold [Michigan State University, East Lansing] [Michigan State University, East Lansing

2014-01-01T23:59:59.000Z

276

Augmenting real data with synthetic data: an application in assessing radio-isotope identification algorithms  

SciTech Connect (OSTI)

The performance of Radio-Isotope Identification (RIID) algorithms using gamma spectroscopy is increasingly important. For example, sensors at locations that screen for illicit nuclear material rely on isotope identification to resolve innocent nuisance alarms arising from naturally occurring radioactive material. Recent data collections for RIID testing consist of repeat measurements for each of several scenarios to test RIID algorithms. Efficient allocation of measurement resources requires an appropriate number of repeats for each scenario. To help allocate measurement resources in such data collections for RIID algorithm testing, we consider using only a few real repeats per scenario. In order to reduce uncertainty in the estimated RIID algorithm performance for each scenario, the potential merit of augmenting these real repeats with realistic synthetic repeats is also considered. Our results suggest that for the scenarios and algorithms considered, approximately 10 real repeats augmented with simulated repeats will result in an estimate having comparable uncertainty to the estimate based on using 60 real repeats.

Burr, Tom L [Los Alamos National Laboratory; Hamada, Michael [Los Alamos National Laboratory; Graves, Todd [Los Alamos National Laboratory; Myers, Steve [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

277

Synthetic gauge fields and Weyl point in Time-Reversal Invariant Acoustic Systems  

E-Print Network [OSTI]

Inspired by the discovery of quantum hall effect and topological insulator, topological properties of classical waves start to draw worldwide attention. Topological non-trivial bands characterized by non-zero Chern numbers are realized with external magnetic field induced time reversal symmetry breaking or dynamic modulation. Due to the absence of Faraday-like effect, the breaking of time reversal symmetry in an acoustic system is commonly realized with moving background fluids, and hence drastically increases the engineering complexity. Here we show that we can realize effective inversion symmetry breaking and effective gauge field in a reduced two-dimensional system by structurally engineering interlayer couplings, achieving an acoustic analog of the topological Haldane model. We then find and demonstrate unidirectional backscattering immune edge states. We show that the synthetic gauge field is closely related to the Weyl points in the three-dimensional band structure.

Xiao, Meng; He, Wen-Yu; Zhang, Z Q; Chan, C T

2015-01-01T23:59:59.000Z

278

Improved realization of canonical Chua's circuit with synthetic inductor using current feedback operational amplifiers  

E-Print Network [OSTI]

In this paper, we report an improved implementation of an inductorless third order autonomous canonical Chua's circuit. The active elements as well as the synthetic inductor employed in this circuit are designed using current feedback operational amplifiers (CFOAs). The reason for employing CFOAs is that they have better features such as high slew rate, high speed of operation, etc., which enable the circuit to operate at higher frequency ranges, when compared to the circuits designed using voltage operational amplifiers. In addition to this, the inclusion of CFOAs provide a buffered output which directly represent a state variable of the system. The Multisim simulations in the time and frequency domains confirm the theoretical estimates of the performance of the proposed circuit at high frequencies. It is also confirmed through hardware experiments.

R. Jothimurugan; K. Suresh; P. Megavarna Ezhilarasu; K. Thamilmaran

2014-08-21T23:59:59.000Z

279

Zeeman tomography of magnetic white dwarfs, I. Reconstruction of the field geometry from synthetic spectra  

E-Print Network [OSTI]

We have computed optical Zeeman spectra of magnetic white dwarfs for field strengths between 10 and 200MG and effective temperatures between 8000 and 40000K. They form a database containing 20628 sets of flux and circular polarization spectra. A least-squares optimization code based on an evolutionary strategy can recover relatively complex magnetic field topologies from phase-resolved synthetic Zeeman spectra of rotating magnetic white dwarfs. We consider dipole and quadrupole components which are non-aligned and shifted off-centre. The model geometries include stars with a single high-field spot and with two spots separated by approx. 90 degrees. The accuracy of the recovered field structure increases with the signal-to-noise ratio of the input spectra and is significantly improved if circular polarization spectra are included in addition to flux spectra. We discuss the strategies proposed so far to unravel the field geometries of magnetic white dwarfs.

F. Euchner; S. Jordan; K. Beuermann; B. T. Gaensicke; F. V. Hessmann

2002-05-21T23:59:59.000Z

280

Corrosion resistance of alloy steels in media encountered in manufacture of synthetic naphthenic acids  

SciTech Connect (OSTI)

The behavior of alloy steels in product streams in the hydrogenation of C/sub 9/ alkylbenzoic acids (ABA) to synthetic naphthenic acids in a continuous-flow pilot unit was investigated in static corrosion test apparatus, in dynamic corrosion test apparatus, and in a glass flask with a reflux condenser. Test conditions and results are presented. 12Kh18N10T and 10Kh17N13M2T steels were corrosion-resistant and 08Kh21N5T and 07Kh16N6 steels were subject to nonuniform general corrosion in the stage of ABA hydrogenation at temperatures up to 200 C and pressures up to 10MPa.

Kuznetsov, V.A.; Kartashevskii, A.I.; Solov'ev, A.M.; Khanbikova, N.A.

1988-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Evolution of US air cargo productivity  

E-Print Network [OSTI]

This thesis provides an overview of the US air cargo industry since airline deregulation in 1978, including a brief overview of the historical evolution of air cargo transport in the US from the early 1900s until the late ...

Donatelli, David J

2012-01-01T23:59:59.000Z

282

Big data : evolution, components, challenges and opportunities  

E-Print Network [OSTI]

This work reviews the evolution and current state of the "Big Data" industry, and to understand the key components, challenges and opportunities of Big Data and analytics face in today business environment, this is analyzed ...

Zarate Santovena, Alejandro

2013-01-01T23:59:59.000Z

283

Space Science: Atmospheres Evolution of planets  

E-Print Network [OSTI]

;Atmospheres / Evolution Heat Sources Compressional Energy Trapped Radioactive Material Tidal Interactions, same A) the surface temperature,Tg, increases. WOW! Simple #12;Temperature vs. time in an Early Epoch

Johnson, Robert E.

284

CCBRDriven Business Process Evolution Barbara Weber1  

E-Print Network [OSTI]

CCBR­Driven Business Process Evolution Barbara Weber1 , Stefanie Rinderle2 , Werner Wild3 of Innsbruck ­ Technikerstrasse 21a, 6020 Innsbruck, Austria Barbara.Weber@uibk.ac.at 2 Dept. Databases

Ulm, Universität

285

Metromorphosis : evolution on the urban island  

E-Print Network [OSTI]

Cities are very much alive. Like islands, they provide a natural testing ground for evolution. With more than half of the world's population living in urban areas now, the influence cities have on the planet's life is ...

Vezina, Kenrick (Kenrick Freitas)

2011-01-01T23:59:59.000Z

286

Infrared Evolution Equations: Method and Applications  

E-Print Network [OSTI]

It is a brief review on composing and solving Infrared Evolution Equations. They can be used in order to calculate amplitudes of high-energy reactions in different kinematic regions in the double-logarithmic approximation.

B. I. Ermolaev; M. Greco; S. I. Troyan

2007-04-03T23:59:59.000Z

287

Evolution and statistics of biological regulatory networks  

E-Print Network [OSTI]

In this thesis, I study the process of evolution of the gene regulatory network in Escherichia coli. First, I characterize the portion of the network that has been documented, and then I simulate growth of the network. In ...

Chandalia, Juhi Kiran, 1979-

2005-01-01T23:59:59.000Z

288

General conditions for quantum adiabatic evolution  

SciTech Connect (OSTI)

Adiabaticity occurs when, during its evolution, a physical system remains in the instantaneous eigenstate of the Hamiltonian. Unfortunately, existing results, such as the quantum adiabatic theorem based on a slow down evolution [H({epsilon}t),{epsilon}{yields}0], are insufficient to describe an evolution driven by the Hamiltonian H(t) itself. Here we derive general criteria and exact bounds, for the state and its phase, ensuring an adiabatic evolution for any Hamiltonian H(t). As a corollary, we demonstrate that the commonly used condition of a slow Hamiltonian variation rate, compared to the spectral gap, is indeed sufficient to ensure adiabaticity but only when the Hamiltonian is real and nonoscillating (for instance, containing exponential or polynomial but no sinusoidal functions)

Comparat, Daniel [Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Batiment 505, 91405 Orsay (France)

2009-07-15T23:59:59.000Z

289

|Research Focus Statistical decision theory and evolution  

E-Print Network [OSTI]

|Research Focus Statistical decision theory and evolution Laurence T. Maloney Department recent articles by Geisler and Diehl use Bayesian statistical decision theory to model the co, an advantage that ultimately translates into `reproductive success'. The balance between predator and prey

Maloney, Laurence T.

290

Galactic evolution: a survey of recent progress  

SciTech Connect (OSTI)

Current observational knowledge bearing on the evolution of elliptical and disk galaxies is reviewed. Particular emphasis is placed on identifying the factors that appear common to all galaxies of a particular type as opposed to those that seem to depend on environmental conditions. The success of various classes of galactic formation and evolution models used to confront these data is evaluated. 92 references, 3 figures.

Strom, K.M.; Strom, S.E.

1982-05-07T23:59:59.000Z

291

Cancer evolution: mathematical models and computational inference  

E-Print Network [OSTI]

and Engineering, ETH Zurich, Mattenstrasse 26, 4058 Basel, Switzerland; E-mail: niko.beerenwinkel@bsse.ethz.ch. Abstract.— Cancer is a somatic evolutionary process characterized by the accumulation of mutations, which contribute to tumor growth, clinical... Version dated: October 7, 2014 Cancer evolution Cancer evolution: mathematical models and computational inference Niko Beerenwinkel1,2, Roland F Schwarz3, Moritz Gerstung4, Florian Markowetz5 1Department of Biosystems Science and Engineering, ETH...

Beerenwinkel, Niko; Schwarz, Roland F.; Gerstung, Moritz; Markowetz, Florian

2014-10-07T23:59:59.000Z

292

Fast Synthetic Vision, Memory, and Learning Models for Virtual Humans James J. Kuffner, Jr JeanClaude Latombe  

E-Print Network [OSTI]

Fast Synthetic Vision, Memory, and Learning Models for Virtual Humans James J. Kuffner, Jr Jean, and learning for au­ tonomous animated characters in real­time virtual environ­ ments. The model is efficient of quickly synthesizing from navigation goals the collision­free mo­ tions for animated human figures

Pratt, Vaughan

293

An increasing number of synthetic compounds have been shown to facilitate ion and polar molecule transport across  

E-Print Network [OSTI]

transport of ions and polar molecules across biological membranes is essential for normal cell function synthetic transporters shown to be active in both model bilayers and cellular membranes. Mechanism of ion simulations of unassisted Na+ and Cl­ ion transport across a bilayer membrane. As the ion enters the outer

Smith, Bradley D.

294

Sustainability of Forage-based Livestock Production Systems in South Texas in an Era of High Synthetic Nitrogen Fertilizer Prices  

E-Print Network [OSTI]

Sustainability of Forage-based Livestock Production Systems in South Texas in an Era of High of soil tests and alternative application methods. The second alternative is to reintroduce into their management practices that were the norm until the advent of cheap synthetic fertilizers after 1945

295

Biological Hydrogen Production Using Synthetic Wastewater Biotin and glutamic acid are not required for biological hydrogen production.  

E-Print Network [OSTI]

Biological Hydrogen Production Using Synthetic Wastewater Conclusion ·Biotin and glutamic acid are not required for biological hydrogen production. ·MgSO4 .7H2O is a required nutrient, but hydrogen production work should focus on minimizing the lag time in biological hydrogen production, by varying nutrient

Barthelat, Francois

296

Evaluation of and Suggested Improvements to the WSM6 Microphysics in WRF- ARW Using Synthetic and Observed GOES-13 Imagery  

SciTech Connect (OSTI)

Synthetic satellite imagery can be employed to evaluate simulated cloud fields. Past studies have revealed that the Weather Research and Forecasting (WRF) WRF Single-Moment 6-class (WSM6) microphysics in WRF-ARW produces less upper level ice clouds within synthetic images compared to observations. Synthetic Geostationary Operational Environmental Satellite (GOES)-13 imagery at 10.7 ?m of simulated cloud fields from the 4 km National Severe Storms Laboratory (NSSL) WRF-ARW is compared to observed GOES-13 imagery. Histograms suggest that too few points contain upper level simulated ice clouds. In particular, side-by-side examples are shown of synthetic and observed convective anvils. Such images illustrate the lack of anvil cloud associated with convection produced by the NSSL WRF-ARW. A vertical profile of simulated hydrometeors suggests that too much cloud water mass may be converted into graupel mass, effectively reducing the main source of ice mass in a simulated anvil. Further, excessive accretion of ice by snow removes ice from an anvil by precipitation settling. Idealized sensitivity tests reveal that a 50% reduction of the conversion of cloud water mass to graupel and a 50% reduction of the accretion rate of ice by snow results in a significant increase in anvil ice of a simulated storm. Such results provide guidance as to which conversions could be reformulated, in a more physical manner, to increase simulated ice mass in the upper troposphere.

Grasso, Lewis; Lindsey, Daniel T.; Lim, Kyo-Sun; Clark, Adam; Bikos, Dan; Dembek, Scott R.

2014-10-01T23:59:59.000Z

297

Chemistry of natural fuel: Use of wastes of synthetic fatty acid production for obtaining water-bitumen emulsions  

SciTech Connect (OSTI)

The possibility of producing water-emulsion waterproofing mastic and waterproofing coating based on bitumen, rubber crumb, and bottoms from production of synthetic fatty acids was studied. The physicochemical properties (softening point, ductility, sorptive properties, and friability) of the waterproofing coating based on a water-emulsion mastic were measured.

Syroezhko, A.M.; Antipova, E.I.; Paukku, A.N. [St. Petersburg Technological Inst. (Russian Federation)

1995-12-10T23:59:59.000Z

298

3'-OH LABELLING OF SYNTHETIC OLIGONUCLEOTIDES WITH NUCLEOTIDE ANALOGS TO USE THEM AS NON-RADIOACTIVE PROBES  

E-Print Network [OSTI]

3'-OH LABELLING OF SYNTHETIC OLIGONUCLEOTIDES WITH NUCLEOTIDE ANALOGS TO USE THEM AS NON. Cloning of bovine rotavirus (RF strain) : Nucleotide sequence of the gene coding for the major capsid oligonucleotides. Annu Rev Biochem 53:323-356 So M, Mc Carthy BJ, 1980. Nucleotide sequence of bacterial transposon

Paris-Sud XI, Université de

299

Abstract--In the design of a spaceborne Synthetic Aperture RADAR mission with multiple modes and swaths, like the  

E-Print Network [OSTI]

the modes. Index Terms-- Synthetic Aperture Radar, STRIPMAP, TOPSAR. Conference topic: SAR/ISAR I Sophia-Antipolis cedex, France. mail: lorenzo.maggi@eurecom.fr calibration and the processing. In order of a spaceborne SAR. Let us refer to the geometry of Fig. 1.a, where we assumed for simplicity flat earth

Gesbert, David

300

ieee transactions on ultrasonics, ferroelectrics, and frequency control, vol. 54, no. 7, july 2007 1399 An Implementation of Synthetic Aperture  

E-Print Network [OSTI]

), they are relatively unknown in medical applications and nondestructive evaluation (NDE) of materials. Only a simple time-domain SAFT (t-d SAFT) has been applied in NDE for detection and characterization of defects as on the size of the transducer used in synthetic aperture [3]. Usually, the NDE and medical SAFT

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Design of insulating devices for in vitro synthetic circuits Elisa Franco, Domitilla Del Vecchio and Richard M. Murray  

E-Print Network [OSTI]

Design of insulating devices for in vitro synthetic circuits Elisa Franco, Domitilla Del Vecchio as an insulating device. This circuit is composed of nucleic acids, which can be designed to interact according to interconnect different transcriptional modules in a large network, preserving their functionality. Insulation

Murray, Richard M.

302

Synthetic Aperture and 3D Imaging for Mine Hunting Sonar F. Florin F. Fohanno I. Quidu J.-P. Malkasse  

E-Print Network [OSTI]

for various existing systems as hull mounted sonar and unmanned underwater vehicles : synthetic aperture.-P. Malkasse Thales Underwater Systems Route de sainte Anne du Portzic, CS 43814, 29238 Brest cedex 3, France to an acceptable level. These MCM operations require resources (sonar, sweep, vehicle,...) that are necessary

Paris-Sud XI, Université de

303

Discontinuous Non-Rigid Motion Analysis of Sea Ice using C-Band Synthetic Aperture Radar Satellite Imagery  

E-Print Network [OSTI]

Discontinuous Non-Rigid Motion Analysis of Sea Ice using C-Band Synthetic Aperture Radar Satellite@cis.udel.edu Cathleen Geiger Snow and Ice Branch USACRREL 72 Lyme Rd, Hanover, NH 03755 cathleen@cis.udel.edu Abstract Sea-ice motion consists of complex non-rigid motions in- volving continuous, piece-wise continuous

Delaware, University of

304

Application of LSQR to Calibration of a MODFLOW Model: A Synthetic Study Chris Muffels1,2  

E-Print Network [OSTI]

Tonkin2,3 , Haijiang Zhang1 , Mary Anderson1 , Tom Clemo4 1 University of Wisconsin-Madison, muffels, tomc@cgiss.boisestate.edu, Boise, ID, USA ABSTRACT The inverse problem in groundwater modeling is often of the LSQR method for solving the inverse problem for groundwater flow using a synthetic model and compare

Barrash, Warren

305

Multivariate synthetic streamflow generation using a hybrid model based on artificial neural networks Hydrology and Earth System Sciences, 6(4), 641654 (2002) EGS  

E-Print Network [OSTI]

networks 641 Hydrology and Earth System Sciences, 6(4), 641­654 (2002) © EGS Multivariate synthetic associated with hydrological processes, making it valuable as a practical tool for synthetic generation backpropagation, hydrological scenario generation, multivariate time-series. Introduction It has been almost four

Paris-Sud XI, Université de

306

Scheme Evolution and the Relational Algebra Edwin McKenzie*  

E-Print Network [OSTI]

Scheme Evolution and the Relational Algebra TR87-003 Revised May 1988 Edwin McKenzie* Richard Institution. #12;Scheme Evolution and the Relational Algebra Edwin McKenzie and Richard Snodgrass Department, evolution of a database's contents and evolution of a database's scheme. We define a relation's scheme

North Carolina at Chapel Hill, University of

307

Analysis of the interaction of phytoestrogens and synthetic chemicals: An in vitro/in vivo comparison  

SciTech Connect (OSTI)

In the evaluation of chemical mixture toxicity, it is desirable to develop an evaluation paradigm which incorporates some critical attributes of real world exposures, particularly low dose levels, larger numbers of chemicals, and chemicals from synthetic and natural sources. This study evaluated the impact of low level exposure to a mixture of six synthetic chemicals (SC) under conditions of co-exposure to various levels of plant-derived phytoestrogen (PE) compounds. Estrogenic activity was evaluated using an in vitro human estrogen receptor (ER) transcriptional activation assay and an in vivo immature rat uterotrophic assay. Initially, dose-response curves were characterized for each of the six SCs (methoxyclor, o,p-DDT, octylphenol, bisphenol A, {beta}-hexachlorocyclohexane, 2,3-bis(4-hydroxyphenyl)-propionitrile) in each of the assays. The six SCs were then combined at equipotent ratios and tested at 5-6 dose levels spanning from very low, sub-threshold levels, to a dose in which every chemical in the mixture was at its individual estrogenic response threshold. The SC mixtures also were tested in the absence or presence of 5-6 different levels of PEs, for a total of 36 (in vitro) or 25 (in vivo) treatment groups. Both in vitro and in vivo, low concentrations of the SC mixture failed to increase estrogenic responses relative to those induced by PEs alone. However, significant increases in response occurred when each chemical in the SC mixture was near or above its individual response threshold. In vitro, interactions between high-doses of SCs and PEs were greater than additive, whereas mixtures of SCs in the absence of PEs interacted in a less than additive fashion. In vivo, the SC and PE mixture responses were consistent with additivity. These data illustrate a novel approach for incorporating key attributes of real world exposures in chemical mixture toxicity assessments, and suggest that chemical mixture toxicity is likely to be of concern only when the mixture components are near or above their individual response thresholds. However, these data suggest that extrapolation from in vitro assays to in vivo mixture effects should be approached with caution.

Charles, Grantley D. [Toxicology and Environmental Research and Consulting, Dow Chemical Company, Midland, MI 48674 (United States)]. E-mail: charles_grantley@allergan.com; Gennings, Chris [Department of Biostatistics, Virginia Commonwealth University, Richmond, VA 23298 (United States); Tornesi, Belen [Toxicology and Environmental Research and Consulting, Dow Chemical Company, Midland, MI 48674 (United States); Kan, H. Lynn [Toxicology and Environmental Research and Consulting, Dow Chemical Company, Midland, MI 48674 (United States); Zacharewski, Timothy R. [Department of Biochemistry and National Food Safety and Toxicology Center, Michigan State University, East Lansing, MI 48824 (United States); Bhaskar Gollapudi, B. [Toxicology and Environmental Research and Consulting, Dow Chemical Company, Midland, MI 48674 (United States); Carney, Edward W. [Toxicology and Environmental Research and Consulting, Dow Chemical Company, Midland, MI 48674 (United States)

2007-02-01T23:59:59.000Z

308

Crystallization, crystal-structure refinement, and IR spectroscopy of a synthetic hexahydroborite analog  

SciTech Connect (OSTI)

The crystal structure of the hexahydroborite analog Ca[B(OH){sub 4}]{sub 2} {center_dot} 2H{sub 2}O (a = 7.9941(3) Angstrom-Sign , b = 6.6321(2) Angstrom-Sign , c = 7.9871(3) Angstrom-Sign , {beta} = 104.166(4) Degree-Sign , V = 410.58(3) Angstrom-Sign {sup 3}, sp. gr. P2/c, Z = 2, {rho}{sub calc} = 1.891 g/cm{sup 3}; Xcalibur S CCD automated diffractometer, 1196 reflections with I > 2{sigma}(I), {lambda}MoK{sub {alpha}}), which was synthesized by the hydrothermal method via the recrystallization of calciborite CaB{sub 2}O{sub 4} (M) in the M - B{sub 2}O{sub 3} - H{sub 2}O system (t = 250 Degree-Sign C and P = 70-80 atm), was refined by the least-squares method with anisotropic displacement parameters (H atoms were located; R{sub 1} = 0.0260). The structure of synthetic hexahydroborite consists of infinite columns running along the c axis. The columns are formed by Ca polyhedra linked together and to [B(OH){sub 4}] orthotetrahedra by sharing edges. Along the two other axes, the translationally equivalent columns are linked only by hydrogen bonds. The presence of a stronger bond between the discrete (Ca-B-O) columns along the shortest (b = 6.6 Angstrom-Sign ) axis accounts for the possibility of the shift of the columns by 1/2T{sub b} and the formation of the second modification of Ca[B(OH){sub 4}]{sub 2} {center_dot} 2H{sub 2}O. The crystals of synthetic hexahydroborite were studied by IR spectroscopy. A crystal-chemical analysis was performed for a series of natural metaborates with the general formula CaB{sub 2}O{sub 4} {center_dot} nH{sub 2}O (CaO: B{sub 2}O{sub 3} = 1: 1, n = 0-6), including calciborite CaB{sub 2}O{sub 4} and hexahydroborite CaB{sub 2}O{sub 4} {center_dot} 6H{sub 2}O as the end members.

Yamnova, N. A., E-mail: natalia-yamnova@yandex.ru; Borovikova, E. Yu.; Dimitrova, O. V. [Moscow State University, Faculty of Geology (Russian Federation)

2011-11-15T23:59:59.000Z

309

Oxidative Dissolution of UO2 in a Simulated Groundwater Containing Synthetic Nanocrystalline Mackinawite  

SciTech Connect (OSTI)

The long-term success of in situ reductive immobilization of uranium (U) depends on the stability of U(IV) precipitates (e.g., uraninite) under oxic conditions. Field and laboratory studies have implicated iron sulfide minerals as redox buffers or oxidant scavengers that may slow oxidation of reduced U(VI) solid phases by oxygen and Fe(III). Yet, the inhibition mechanism(s) and reaction rates of uraninite (UO2) oxidative dissolution by oxic species such as oxygen in FeS-bearing systems remain largely unresolved. To address this knowledge gap, abiotic batch experiments were conducted with synthetic UO2 in the presence and absence of synthetic mackinawite (FeS) under simulated groundwater conditions of pH = 7, PO2 = 0.02 atm, and PCO2 = 0.05 atm (equivalent to total dissolved carbonate of 0.01 M). The kinetic profiles of dissolved uranium indicate that FeS inhibited UO2 dissolution for 51 hr by effectively scavenging oxygen and keeping dissolved oxygen (DO) low. During this time period, oxidation of structural Fe(II) and S(-II) of FeS were found to control the DO levels, leading to the formation of iron oxyhydroxides and elemental sulfur, respectively, as verified by X-ray diffraction (XRD), Mössbauer and X-ray absorption spectroscopy (XAS). After FeS was depleted due to oxidation, DO levels increased and UO2 oxidative dissolution occurred at an initial rate of rm = 1.2 ± 0.4 ×10-8 mol•g-1•s-1, higher than rm = 5.4 ± 0.3 ×10-9 mol•g-1•s-1 in the control experiment where FeS was absent. Soluble U(VI) products were adsorbed by iron oxyhydroxides (i.e. nanogoethite and ferrihydrite) formed from FeS oxidation, which facilitated the detachment of U(VI) surface complexes and more rapid dissolution of UO2. XAS analysis confirmed the adsorption of U(VI) species, and also showed that U(VI) was not significantly incorporated into iron oxyhydroxide structure. This work reveals that both the oxygen scavenging by FeS and the adsorption of U(VI) to FeS oxidation products may be important in U reductive immobilization systems subject to redox cycling events.

Bi, Yuqiang; Hyun, Sung Pil; Kukkadapu, Ravi K.; Hayes, Kim F.

2013-02-01T23:59:59.000Z

310

Digitoxin and a synthetic monosaccharide analog inhibit cell viability in lung cancer cells  

SciTech Connect (OSTI)

Mechanisms of digitoxin-inhibited cell growth and induced apoptosis in human non-small cell lung cancer (NCI-H460) cells remain unclear. Understanding how digitoxin or derivate analogs induce their cytotoxic effect below therapeutically relevant concentrations will help in designing and developing novel, safer and more effective anti-cancer drugs. In this study, NCI-H460 cells were treated with digitoxin and a synthetic analog D6-MA to determine their anti-cancer activity. Different concentrations of digitoxin and D6-MA were used and the subsequent changes in cell morphology, viability, cell cycle, and protein expressions were determined. Digitoxin and D6-MA induced dose-dependent apoptotic morphologic changes in NCI-H460 cells via caspase-9 cleavage, with D6-MA possessing 5-fold greater potency than digitoxin. In comparison, non-tumorigenic immortalized bronchial and small airway epithelial cells displayed significantly less apoptotic sensitivity compared to NCI-H460 cells suggesting that both digitoxin and D6-MA were selective for NSCLC. Furthermore, NCI-H460 cells arrested in G(2)/M phase following digitoxin and D6-MA treatment. Post-treatment evaluation of key G2/M checkpoint regulatory proteins identified down-regulation of cyclin B1/cdc2 complex and survivin. Additionally, Chk1/2 and p53 related proteins experienced down-regulation suggesting a p53-independent cell cycle arrest mechanism. In summary, digitoxin and D6-MA exert anti-cancer effects on NCI-H460 cells through apoptosis or cell cycle arrest, with D6-MA showing at least 5-fold greater potency relative to digitoxin. -- Highlights: ? Digitoxin and synthetic analog D6-MA induced apoptotic morphologic changes in NCI-H460 cells in a dose-dependent manner. ? Apoptotic cell death induced by analog was 5-fold more potent when compared to digitoxin. ? NCI-H460 cells arrested in G(2)/M phase following digitoxin (? 5 nM) and analog (? 1 nM) treatment. ? Digitoxin inhibited the expression of cyclin B1/cdc2 complex and survivin at sub-therapeutic concentrations. ? D6-MA was 4-fold more potent than digitoxin.

Elbaz, Hosam A. [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States)] [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States); Stueckle, Todd A. [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States) [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States); National Institute for Occupational Safety and Health, Morgantown, WV26506 (United States); Wang, Hua-Yu Leo; O'Doherty, George A. [Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115 (United States)] [Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115 (United States); Lowry, David T.; Sargent, Linda M.; Wang, Liying [National Institute for Occupational Safety and Health, Morgantown, WV26506 (United States)] [National Institute for Occupational Safety and Health, Morgantown, WV26506 (United States); Dinu, Cerasela Zoica, E-mail: cerasela-zoica.dinu@mail.wvu.edu [Department of Chemical Engineering, West Virginia University, Morgantown, WV 26506 (United States); Rojanasakul, Yon, E-mail: yrojan@hsc.wvu.edu [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States)] [Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506 (United States)

2012-01-01T23:59:59.000Z

311

Three dimensional fabric evolution of sheared sand  

SciTech Connect (OSTI)

Granular particles undergo translation and rolling when they are sheared. This paper presents a three-dimensional (3D) experimental assessment of fabric evolution of sheared sand at the particle level. F-75 Ottawa sand specimen was tested under an axisymmetric triaxial loading condition. It measured 9.5 mm in diameter and 20 mm in height. The quantitative evaluation was conducted by analyzing 3D high-resolution x-ray synchrotron micro-tomography images of the specimen at eight axial strain levels. The analyses included visualization of particle translation and rotation, and quantification of fabric orientation as shearing continued. Representative individual particles were successfully tracked and visualized to assess the mode of interaction between them. This paper discusses fabric evolution and compares the evolution of particles within and outside the shear band as shearing continues. Changes in particle orientation distributions are presented using fabric histograms and fabric tensor.

Hasan, Alsidqi; Alshibli, Khalid (UWA)

2012-10-24T23:59:59.000Z

312

A High Resolution, Light-Weight, Synthetic Aperture Radar for UAV Application  

SciTech Connect (OSTI)

(U) Sandia National Laboratories in collaboration with General Atomics (GA) has designed and built a high resolution, light-weight, Ku-band Synthetic Aperture Radar (SAR) known as "Lynx". Although Lynx can be operated on a wide variety of manned and unmanned platforms, its design is optimized for use on medium altitude Unmanned Aerial Vehicles (UAVS). In particular, it can be operated on the Predator, I-GNAT, and Prowler II platforms manufactured by GA. (U) The radar production weight is less than 120 lb and operates within a 3 GHz band from 15.2 GHz to 18.2 GHz with a peak output power of 320 W. Operating range is resolution and mode dependent but can exceed 45 km in adverse weather (4 mm/hr rain). Lynx has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode, over substantial depression angles (5 to 60 deg) and squint angles (broadside ±45 deg). Real-time Motion Compensation is implemented to allow high-quality image formation even during vehicle turns and other maneuvers.

Doerry, A.W.; Hensley, W.H.; Stence, J.; Tsunoda, S.I. Pace, F.; Walker, B,C.; Woodring, M.

1999-05-27T23:59:59.000Z

313

Hydrogenation of aromatics in synthetic crude distillates catalyzed by platinum supported in molecular sieves  

SciTech Connect (OSTI)

Catalytic hydrogenation of synthetic crude distillates from Canadian oil sands was carried out over platinum metal supported in pillared interlayered clay (PILC) and Y-zeolite. The molecular sieve supports were employed to modify the properties of dispersed platinum particles and improve their resistance to poisoning by sulfur. The objective was to reduce the distillate aromatic content to meet diesel emission control standards and cetane number requirements. Catalysts were prepared in a series of steps, and metal precursor was loaded using ion-exchange procedures. Characterization was done using X-ray diffraction, hydrogen chemisorption, and proton-induced X-ray emission elemental analysis. Catalytic hydrogenation reactions were carried out by processing distillate feedstocks both high (>100 ppm) and low (<10 ppm) in sulfur using a continuous-flow automated microreactor system. Experimental runs were performed to determine the reaction kinetics and Arrhenius parameters as a means of evaluating and comparing catalyst performance. Significant differences in catalyst activity were found. The Pt/Y-zeolite-alumina catalyst showed a much superior hydrogenation performance under conditions of high sulfur content. The extent of cracking and ring opening was also evaluated and was shown to be minimal under the operating conditions employed.

Kimbara, N.; Charland, J.P. [CANMET, Ottawa, Ontario (Canada)] [CANMET, Ottawa, Ontario (Canada); Wilson, M.F. [CANMET, Devon, Alberta (Canada)] [CANMET, Devon, Alberta (Canada)

1996-11-01T23:59:59.000Z

314

The Elephant in the Room: Dealing with Carbon Emissions from Synthetic Transportation Fuels Production  

SciTech Connect (OSTI)

Carbon dioxide (CO2), produced by conversion of hydrocarbons to energy, primarily via fossil fuel combustion, is one of the most ubiquitous and significant greenhouse gases (GHGs). Concerns over climate change precipitated by rising atmospheric GHG concentrations have prompted many industrialized nations to begin adopting limits on emissions to inhibit increases in atmospheric CO2 levels. The United Nations Framework Convention on Climate Change states as a key goal the stabilization of atmospheric CO2 at a level that prevents “dangerous anthropogenic interference” with the planet’s climate systems. This will require sharply reducing emissions growth rates in developing nations, and reducing CO2 emissions in the industrialized world to half current rates in the next 50 years. And ultimately, stabilization will require that annual emissions drop to almost zero.Recently, there has been interest in producing synthetic transportation fuels via coal-to-liquids (CTL) production, particularly in countries where there is an abundant supply of domestic coal, including the United States. This paper provides an overview of the current state of CTL technologies and deployment, a discussion of costs and technical requirements for mitigating the CO2 impacts associated with a CTL facility, and the challenges facing the CTL industry as it moves toward maturity.

Parker, Graham B.; Dahowski, Robert T.

2007-07-11T23:59:59.000Z

315

3D synthetic aperture PIV measurements from artificial vibrating vocal folds  

E-Print Network [OSTI]

During speech, air from the lungs is forced past the vocal folds which vibrate, producing sound. A pulsatile jet of air is formed downstream of the vibrating folds which interacts with the various structures in the airway. Currently, it is postulated that the way this jet interacts with the downstream structures in the airway directly affects the quality of human speech. In order to better understand this jet, it is desirable to visualize the jet in three dimensions. We present the results of a method that reconstructs the three dimensional velocity field using Synthetic aperture PIV (SAPIV) \\cite{Belden:2010}. SAPIV uses an array of high-speed cameras to artificially create a single camera with a variable focal length. This is accomplished by overlapping the images from the array to create a "focal stack". As the images are increasingly overlapped, more distant image planes come into focus. 3D PIV is then performed on the "refocused" focal stack to reconstruct the flow field in three dimensions. SAPIV has th...

Daily, Jesse; Belden, Jesse; Thomson, Scott; Truscott, Tadd

2011-01-01T23:59:59.000Z

316

On the detection of crevasses in glacial ice with synthetic-aperture radar.  

SciTech Connect (OSTI)

The intent of this study is to provide an analysis of the scattering from a crevasse in Antarctic ice, utilizing a physics-based model for the scattering process. Of primary interest is a crevasse covered with a snow bridge, which makes the crevasse undetectable in visible-light images. It is demonstrated that a crevasse covered with a snow bridge can be visible in synthetic-aperture-radar (SAR) images. The model of the crevasse and snow bridge incorporates a complex dielectric permittivity model for dry snow and ice that takes into account the density profile of the glacier. The surface structure is based on a fractal model that can produce sastrugi-like features found on the surface of Antarctic glaciers. Simulated phase histories, computed with the Shooting and Bouncing Ray (SBR) method, are processed into SAR images. The viability of the SBR method for predicting scattering from a crevasse covered with a snow bridge is demonstrated. Some suggestions for improving the model are given.

Brock, Billy C.

2010-02-01T23:59:59.000Z

317

Method and apparatus for reducing range ambiguity in synthetic aperture radar  

DOE Patents [OSTI]

A modified Synthetic Aperture Radar (SAR) system with reduced sensitivity to range ambiguities, and which uses secondary receiver channels to detect the range ambiguous signals and subtract them from the signal received by the main channel. Both desired and range ambiguous signals are detected by a main receiver and by one or more identical secondary receivers. All receivers are connected to a common antenna with two or more feed systems offset in elevation (e.g., a reflector antenna with multiple feed horns or a phased array with multiple phase shift networks. The secondary receiver output(s) is (are) then subtracted from the main receiver output in such a way as to cancel the ambiguous signals while only slightly attenuating the desired signal and slightly increasing the noise in the main channel, and thus does not significantly affect the desired signal. This subtraction may be done in real time, or the outputs of the receivers may be recorded separately and combined during signal processing.

Kare, Jordin T. (San Ramon, CA)

1999-10-26T23:59:59.000Z

318

Imaging targets embedded in a lossy half space with Synthetic Aperture Radar  

SciTech Connect (OSTI)

This paper addresses theoretical aspects of forming images from an airborne Synthetic Aperture Radar (SAR) of targets buried below the earth`s surface. Soil is generally a lossy, dispersive medium, with wide ranging variability in these attributes depending on soil type, moisture content, and a host of other physical properties. Focussing a SAR subsurface image presents new dimensions of complexity relative to its surface-image counterpart, even when the soil`s properties are known. This paper treats the soil as a lossy, dispersive half space, and presents a practical model for the radar echo-delay time to point scatterers within it. This model is then used to illustrate effects of refraction, dispersion, and attenuation on a SAR`s phase histories, and the resulting image. Various data collection geometries and processing strategies are examined for both 2-Dimensional and 3-Dimensional SAR images. The conclusions from this work are that (1) focussing a SAR image must generally take into account both refraction and dispersion, (2) resolving targets at different depths in lossy soils requires perhaps unprecedented sidelobe attenuation, that for some soils may only be achievable with specialized window functions, (3) the impulse response of the soil itself places a practical limit on the usable bandwidth of the radar, and (4) dynamic ranges and sensitivities will need to be orders of magnitude greater than typical surface-imaging SARs, leading to significant impact on SAR parameters, for example compressing the usable range of pulse repetition frequencies (PRFs).

Doerry, A.W.; Brock, B.C.; Boverie, B.; Cress, D.

1994-05-01T23:59:59.000Z

319

Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas  

E-Print Network [OSTI]

We build an accurate database of 5200 HCN and HNC rotation-vibration energy levels, determined from existing laboratory data. 20~000 energy levels in the Harris et al. (2002) linelist are assigned approximate quantum numbers. These assignments, lab determined energy levels and Harris et al (2002) energy levels are incorporated in to a new energy level list. A new linelist is presented, in which frequencies are computed using the lab determined energy levels where available, and the ab initio energy levels otherwise. The new linelist is then used to compute new model atmospheres and synthetic spectra for the carbon star WZ Cas. This results in better fit to the spectrum of WZ Cas in which the absorption feature at 3.56 micron is reproduced to a higher degree of accuracy than has previously been possible. We improve the reproduction of HCN absorption features by reducing the abundance of Si to [Si/H] = --0.5 dex, however, the strengths of the $\\Delta v=2$ CS band heads are over-predicted.

G. J. Harris; J. Tennyson; B. M. Kaminsky; Ya. V. Pavlenko; H. R. A. Jones

2005-12-14T23:59:59.000Z

320

Behavior of Concrete Panels Reinforced with Synthetic Fibers, Mild Steel, and GFRP Composites Subjected to Blasts  

SciTech Connect (OSTI)

The paper presents experimental data generated for calibrating finite element models to predict the performance of reinforced concrete panels with a wide range of construction details under blast loading. The specimens were 1.2 m square panels constructed using Normal Weight Concrete (NWC) or Fiber Reinforced Concrete (FRC). FRC consisted of macro-synthetic fibers dispersed in NWC. Five types of panels were tested: NWC panels with steel bars; FRC panels without additional reinforcement; FRC panels with steel bars; NWC panels with glass fiber reinforced polymer (GFRP) bars; and NWC panels reinforced with steel bars and external GFRP laminates on both faces. Each panel type was constructed with three thicknesses: 152 mm, 254 mm, and 356 mm. FRC panels with steel bars had the best performance for new construction. NWC panels reinforced with steel bars and external GFRP laminates on both faces had the best performance for strengthening or rehabilitation of existing structures. The performance of NWC panels with GFRP bars was strongly influenced by the bar spacing. The behavior of the panels is classified in terms of damage using immediate occupancy, life safety, and near collapse performance levels. Preliminary dynamic simulations are compared to the experimental results.

C. P. Pantelides; T. T. Garfield; W. D. Richins; T. K. Larson; J. E. Blakeley

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

SNM neutron detection using a time-gated synthetic aperture hybrid approach  

SciTech Connect (OSTI)

This work focuses on using forward and adjoint transport in a hybrid application of 3-D deterministic (PENTRAN) and Monte Carlo (MCNP5) codes to model a series of neutron detector blocks. These blocks, or 'channels, ' contain a unique set of moderators with 4 atm He-3 detectors tuned to detect and profile a gross energy spectrum of a passing neutron (SNM) source. Ganging the units together as a large area system enables one to apply time gating the source-detector response to maximize signal to noise responses from a passing source with minimal background; multiple units may be positioned as a collective synthetic aperture detector array to be used as a way of performing real time neutron spectroscopy for detecting special nuclear materials in moving vehicles. The initial design, detector response coupling, confirmation of initial design functionality using adjoint transport calculations, and realistic simulation using PENTRAN and MCNP5 are presented. Future work will include optimization and application to realistic scenarios and additional sources. (authors)

Molinar, M.; Yi, C.; Edgar, C. A.; Manalo, K.; Chin, M.; Sjoden, G. [Nuclear and Radiological Engineering Program, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 770 State Street, Atlanta GA 30332-0745 (United States)

2013-07-01T23:59:59.000Z

322

A grid of synthetic ionizing spectra for very hot compact stars from NLTE model atmospheres  

E-Print Network [OSTI]

The precise analysis of properties of planetary nebulae is strongly dependent on good models for the stellar ionizing spectrum. Observations in the UV - X-ray wavelength range as well as NLTE model atmosphere calculations of spectra of their exciting stars have shown that neither blackbody fluxes nor "standard" NLTE atmosphere models which are composed out of hydrogen and helium only are good approximations. Strong differences between synthetic spectra from these compared to observed spectra at energies higher than 54 eV (He II ground state) can be ascribed to the neglect of metal-line blanketing. Realistic modeling of the emergent fluxes of hot stars in the UV - X-ray wavelength range requires metal-line blanketed NLTE model atmospheres which include all elements from hydrogen up to the iron-group. For this purpose, we present a grid (solar and halo abundance ratios) of metal-line blanketed NLTE model atmosphere fluxes which covers the parameter range of central stars of planetary nebulae.

Thomas Rauch

2003-03-20T23:59:59.000Z

323

High Energy Evolution with Pomeron Loops  

E-Print Network [OSTI]

The high energy/density QCD has been widely used for DIS phenomenology with a projectile particle considered as perturbative and dilute. We review some recent attempts to derive a high energy evolution kernel which treats targets and projectiles in a symmetric manner. From theoretical point of view the problem is tightly related to inclusion of Pomeron loops in the evolution. The ultimate goal is to consider high energy scatterings with both projectile and target being dense, the situation faced at RHIC and the LHC.

Michael Lublinsky

2006-05-02T23:59:59.000Z

324

Asymmetric cyclic evolution in polymerised cosmology  

SciTech Connect (OSTI)

The dynamical systems methods are used to study evolution of the polymerised scalar field cosmologies with the cosmological constant. We have found all evolutional paths admissible for all initial conditions on the two-dimensional phase space. We have shown that the cyclic solutions are generic. The exact solution for polymerised cosmology is also obtained. Two basic cases are investigated, the polymerised scalar field and the polymerised gravitational and scalar field part. In the former the division on the cyclic and non-cyclic behaviour is established following the sign of the cosmological constant. The value of the cosmological constant is upper bounded purely from the dynamical setting.

Hrycyna, Orest [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Rac?awickie 14, 20-950 Lublin (Poland); Mielczarek, Jakub; Szyd?owski, Marek, E-mail: hrycyna@kul.lublin.pl, E-mail: jakub.mielczarek@uj.edu.pl, E-mail: uoszydlo@cyf-kr.edu.pl [Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Kraków (Poland)

2009-12-01T23:59:59.000Z

325

Mass extinctions vs. uniformitarianism in biological evolution  

SciTech Connect (OSTI)

It is usually believed that Darwin`s theory leads to a smooth gradual evolution, so that mass extinctions must be caused by external shocks. However, it has recently been argued that mass extinctions arise from the intrinsic dynamics of Darwinian evolution. Species become extinct when swept by intermittent avalanches propagating through the global ecology. These ideas are made concrete through studies of simple mathematical models of co-evolving species. The models exhibit self-organized criticality and describe some general features of the extinction pattern in the fossil record.

Bak, P.; Paczuski, M.

1995-12-31T23:59:59.000Z

326

Cosmological Evolution of Pilgrim Dark Energy  

E-Print Network [OSTI]

We study pilgrim dark energy model by taking IR cut-offs as particle and event horizons as well as conformal age of the universe. We derive evolution equations for fractional energy density and equation of state parameters for pilgrim dark energy. The phantom cosmic evolution is established in these scenarios which is well supported by the cosmological parameters such as deceleration parameter, statefinder parameters and phase space of $\\omega_\\vartheta$ and $\\omega'_\\vartheta$. We conclude that the consistent value of parameter $\\mu$ is $\\mu<0$ in accordance with the current Planck and WMAP$9$ results.

Sharif, M

2015-01-01T23:59:59.000Z

327

Cosmological Evolution of Pilgrim Dark Energy  

E-Print Network [OSTI]

We study pilgrim dark energy model by taking IR cut-offs as particle and event horizons as well as conformal age of the universe. We derive evolution equations for fractional energy density and equation of state parameters for pilgrim dark energy. The phantom cosmic evolution is established in these scenarios which is well supported by the cosmological parameters such as deceleration parameter, statefinder parameters and phase space of $\\omega_\\vartheta$ and $\\omega'_\\vartheta$. We conclude that the consistent value of parameter $\\mu$ is $\\mu<0$ in accordance with the current Planck and WMAP$9$ results.

M. Sharif; M. Zubair

2014-09-26T23:59:59.000Z

328

C H A P T E R F O U R T E E N Microfluidics for Synthetic Biology  

E-Print Network [OSTI]

C H A P T E R F O U R T E E N Microfluidics for Synthetic Biology: From Design to Execution M. S of a microfluidic chip 298 1.2. A parallel DAW device 322 1.3. Cell tracking 326 1.4. DAW hardware and software 334. coli 358 3.2. Method to set up a MDAW microfluidic experiment 364 Acknowledgments 371 References 371

Hasty, Jeff

329

The Expression of Gender in Synthetic Actors: Modeling and Motion Control Over Invariant Perceptual Cues Leading to Gender Recognition  

E-Print Network [OSTI]

MCLAUGHLIN Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: 7fa //Ik Louis G. Tassinary (Co-Chair of Committee) Tarek Alameldin (Member) Susan Van... Baerle (Co-Chair of Committee) ,^Vayne L. Shebilske (Member) Julius M. Gribou (Head of Department) May 1994 Ill ABSTRACT The Expression of Gender in Synthetic Actors: Modeling and Motion Control Over Invariant Perceptual Cues Leading to Gender...

McLaughlin, Timothy David

330

(M)other Russia: Evolution or Revolution  

E-Print Network [OSTI]

(M)other Russia: Evolution or Revolution Twenty Years since the Collapse of Communism An inter.music.sas.ac.uk £25 (£15 student) Keynote speakers: Sir Rodric Braithwaite (former UK Ambassador to Russia) Vladimir Ambassador to Russia: Russia Today Coffee 11:00 Irina Souch (University of Amsterdam): Double Thinking

Miranda, Eduardo Reck

331

QCD Evolution of Helicity and Transversity TMDs  

SciTech Connect (OSTI)

We examine the QCD evolution of the helicity and transversity parton distribution functions when including also their dependence on transverse momentum. Using an appropriate definition of these polarized transverse momentum distributions (TMDs), we describe their dependence on the factorization scale and rapidity cutoff, which is essential for phenomenological applications.

Prokudin, Alexei [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

332

Leading Edge Bacterial Genomics and Pathogen Evolution  

E-Print Network [OSTI]

Leading Edge Review Bacterial Genomics and Pathogen Evolution David M. Raskin,1 Rekha Seshadri,2 Medical School, Boston, MA 02115, USA 2 The Institute for Genomic Research, 9712 Medical Center Drive.02.002 The availability of hundreds of bacterial genome sequences has altered the study of bacte- rial pathogenesis

Mekalanos, John

333

Supporting Database Provenance under Schema Evolution  

E-Print Network [OSTI]

,11] have significantly simplified the problems of preserving the history of the database schemaSupporting Database Provenance under Schema Evolution Shi Gao and Carlo Zaniolo University of California, Los Angeles {gaoshi, zaniolo}@cs.ucla.edu Abstract. Database schema upgrades are common in modern

Zaniolo, Carlo

334

Asymmetric Time Evolution and Indistinguishable Events  

SciTech Connect (OSTI)

With a time asymmetric theory, in which quantum mechanical time evolution is given by a semigroup of operators rather than by a group, the states of open systems are represented by density operators exhibiting a branching behavior. To treat the indistinguishably of the members of experimental ensembles, we hypothesize that environmental interference occurs during events that are themselves fundamentally indistinguishable.

Bryant, P. W. [Center for Complex Quantum Systems, Department of Physics, University of Texas at Austin, Austin, Texas 78712 (United States)

2010-11-25T23:59:59.000Z

335

GIS at UCAR The evolution of  

E-Print Network [OSTI]

GIS at UCAR The evolution of NCAR's GIS Initiative Olga Wilhelmi ­ ESIG-NCAR Unidata Workshop 24 ­ a system of hardware, software, data, people, organizations, and institutional arrangements for collecting and software training are critical factors in ease of technology adoption. Demonstration projects are the most

336

ScheduleDay 1: Molecular Evolution Introduction  

E-Print Network [OSTI]

-Cantor Model Do Exercise Read Ponting, study slides from day 3 and find questions. Day 3: Comparative Genomics Lecture: Comparative Genomics Prepare Projects Practical: Models of Sequence Evolution Read HSW1, study questions. Day 10: Projects Project 1 ­ Population Genomics: Selective Sweeps Project 2 ­ Molecular

Goldschmidt, Christina

337

Microfluidic Large-Scale Integration: The Evolution  

E-Print Network [OSTI]

Microfluidic Large-Scale Integration: The Evolution of Design Rules for Biological Automation, polydimethylsiloxane Abstract Microfluidic large-scale integration (mLSI) refers to the develop- ment of microfluidic, are discussed. Several microfluidic components used as building blocks to create effective, complex, and highly

Quake, Stephen R.

338

Evidences of Evolution 1. African Elephants  

E-Print Network [OSTI]

: Population density ·One tribe went bersek, as though more glucose was added at the 33k gen? ·Analyze ·Plate cultures vs Shake flask ·Ara+ = white colonies; Ara- = red colonies ·Founding population, 12 from Eocene beds of Africa and Pakistan (Drawing by Carl Buell) #12;OTHER EVOLUTION THEORIES

Mittal, Aditya

339

NEW ENERGETIC SELECTION PRINCIPLE IN DIFFERENTIAL EVOLUTION  

E-Print Network [OSTI]

NEW ENERGETIC SELECTION PRINCIPLE IN DIFFERENTIAL EVOLUTION Vitaliy Feoktistov Centre de Recherche and convergence. In this paper we introduce a new principle of Energetic Selection. It consists in both decreasing the population size and the computation efforts according to an energetic barrier function which depends

Boyer, Edmond

340

The Evolution of Compact Binary Star Systems  

E-Print Network [OSTI]

We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Mergings of compact binary stars are expected to be the most important sources for the forthcoming gravitational-wave (GW) astronomy. In the first part of the review, we discuss observational manifestations of close binary stars with NS and/or black components and their merger rate, crucial points in the formation and evolution of compact stars in binary systems, including the treatment of the natal kicks which NSs and BHs acquire during the core collapse of massive stars and the common envelope phase of binary evolution, which are most relevant to the merging rates of NS-NS, NS-BH and BH-BH binaries. The second part of the review is devoted mainly to formation and evolution of binary WDs and their observational manifestations, including their role as progenitors of cosmologically important thermonuclear SN Ia. We also consider AM CVn-stars which are thought to be the best verification binary GW sources for future low-frequency GW space interferometers.

Konstantin Postnov; Lev Yungelson

2014-03-21T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Entropy evolution law in a laser process  

E-Print Network [OSTI]

For the first time, we obtain the entropy variation law in a laser process after finding the Kraus operator of the master equation describing the laser process with the use of the entangled state representation. The behavior of entropy is determined by the competition of the gain and damping in the laser process. The photon number evolution formula is also obtained.

Jun-hua Chen; Hong-yi Fan

2012-09-21T23:59:59.000Z

342

Integrated Operation of INL HYTEST System and High-Temperature Steam Electrolysis for Synthetic Natural Gas Production  

SciTech Connect (OSTI)

The primary feedstock for synthetic fuel production is syngas, a mixture of carbon monoxide and hydrogen. Current hydrogen production technologies rely upon fossil fuels and produce significant quantities of greenhouse gases as a byproduct. This is not a sustainable means of satisfying future hydrogen demands, given the current projections for conventional world oil production and future targets for carbon emissions. For the past six years, the Idaho National Laboratory has been investigating the use of high-temperature steam electrolysis (HTSE) to produce the hydrogen feedstock required for synthetic fuel production. High-temperature electrolysis water-splitting technology, combined with non-carbon-emitting energy sources, can provide a sustainable, environmentally-friendly means of large-scale hydrogen production. Additionally, laboratory facilities are being developed at the INL for testing hybrid energy systems composed of several tightly-coupled chemical processes (HYTEST program). The first such test involved the coupling of HTSE, CO2 separation membrane, reverse shift reaction, and methanation reaction to demonstrate synthetic natural gas production from a feedstock of water and either CO or a simulated flue gas containing CO2. This paper will introduce the initial HTSE and HYTEST testing facilities, overall coupling of the technologies, testing results, and future plans.

Carl Marcel Stoots; Lee Shunn; James O'Brien

2010-06-01T23:59:59.000Z

343

Gas Feedback on Stellar Bar Evolution  

E-Print Network [OSTI]

We analyze evolution of live disk-halo systems in the presence of various gas fractions, f_gas less than 8% in the disk. We addressed the issue of angular momentum (J) transfer from the gas to the bar and its effect on the bar evolution. We find that the weakening of the bar, reported in the literature, is not related to the J-exchange with the gas, but is caused by the vertical buckling instability in the gas-poor disks and by a steep heating of a stellar velocity dispersion by the central mass concentration (CMC) in the gas-rich disks. The gas has a profound effect on the onset of the buckling -- larger f_gas brings it forth due to the more massive CMCs. The former process leads to the well-known formation of the peanut-shaped bulges, while the latter results in the formation of progressively more elliptical bulges, for larger f_gas. The subsequent (secular) evolution of the bar differs -- the gas-poor models exhibit a growing bar while gas-rich models show a declining bar whose vertical swelling is driven by a secular resonance heating. The border line between the gas-poor and -rich models lies at f_gas ~ 3% in our models, but is model-dependent and will be affected by additional processes, like star formation and feedback from stellar evolution. The overall effect of the gas on the evolution of the bar is not in a direct J transfer to the stars, but in the loss of J by the gas and its influx to the center that increases the CMC. The more massive CMC damps the vertical buckling instability and depopulates orbits responsible for the appearance of peanut-shaped bulges. The action of resonant and non-resonant processes in gas-poor and gas-rich disks leads to a converging evolution in the vertical extent of the bar and its stellar dispersion velocities, and to a diverging evolution in the bulge properties.

Ingo Berentzen; Isaac Shlosman; Inma Martinez-Valpuesta; Clayton Heller

2007-05-27T23:59:59.000Z

344

Alien Species and Evolution: The Evolutionary Ecology of Exotic Plants, Animals, Microbes and Interacting Native Species  

E-Print Network [OSTI]

Review: Alien Species and Evolution: The EvolutionaryGermany George W. Cox. Alien Species and Evolution: TheRecycled, acid-free paper. Alien Species and Evolution leads

Nehrbass, Nana

2005-01-01T23:59:59.000Z

345

The electrorheology of suspensions consisting of Na-Fluorohectorite synthetic clay particles in silicon oil  

E-Print Network [OSTI]

Under application of an electric field greater than a triggering electric field $E_c \\sim 0.4$ kV/mm, suspensions obtained by dispersing particles of the synthetic clay fluoro-hectorite in a silicon oil, aggregate into chain- and/or column-like structures parallel to the applied electric field. This micro-structuring results in a transition in the suspensions' rheological behavior, from a Newtonian-like behavior to a shear-thinning rheology with a significant yield stress. This behavior is studied as a function of particle volume fraction and strength of the applied electric field, $E$. The steady shear flow curves are observed to scale onto a master curve with respect to $E$, in a manner similar to what was recently found for suspensions of laponite clay [42]. In the case of Na-fluorohectorite, the corresponding dynamic yield stress is demonstrated to scale with respect to $E$ as a power law with an exponent $\\alpha \\sim 1.93$, while the static yield stress inferred from constant shear stress tests exhibits a similar behavior with $\\alpha \\sim 1.58$. The suspensions are also studied in the framework of thixotropic fluids: the bifurcation in the rheology behavior when letting the system flow and evolve under a constant applied shear stress is characterized, and a bifurcation yield stress, estimated as the applied shear stress at which viscosity bifurcation occurs, is measured to scale as $E^\\alpha$ with $\\alpha \\sim 0.5$ to 0.6. All measured yield stresses increase with the particle fraction $\\Phi$ of the suspension. For the static yield stress, a scaling law $\\Phi^\\beta$, with $\\beta = 0.54$, is found. The results are found to be reasonably consistent with each other. Their similarities with-, and discrepancies to- results obtained on laponite-oil suspensions are discussed.

Y. Méheust; K. P. S. Parmar; B. Schjelderupsen; J. O. Fossum

2010-02-01T23:59:59.000Z

346

Improving low temperature properties of synthetic diesel fuels derived from oil shale. Alternative fuels utilization program  

SciTech Connect (OSTI)

The ability of additives to improve the cold flow properties of shale oil derived fuels boiling in the diesel fuel range was evaluated. Because a commercial shale oil industry did not exist to provide actual samples of finished fuels, a representative range of hydroprocessed shale oil fractions was prepared for use in the additive testing work. Crude oil shale from Occidental Shale Company was fractionated to give three liquids in the diesel fuel boiling range. The initial boiling point in each case was 325/sup 0/F (163/sup 0/C). The final boiling points were 640/sup 0/F (338/sup 0/C), 670/sup 0/F (354/sup 0/C) and 700/sup 0/F (371/sup 0/F). Each fraction was hydrotreated to three different severities (800, 1200 and 1500 psi total pressure) over a Shell 324 nickel molybdate on alumina catalyst at 710 to 750/sup 0/F to afford 9 different model fuels. A variety of commercial and experimental additives were evaluated as cold flow improvers in the model fuels at treat levels of 0.04 to 0.4 wt %. Both the standard pour point test (ASTM D97) and a more severe low temperature flow test (LTFT) were employed. Reductions in pour points of up to 70/sup 0/F and improvements in LTFT temperatures up to 16/sup 0/F were achieved. It is concluded that flow improver additives can play an important role in improving the cold flow properties of future synthetic fuels of the diesel type derived from oil shale.

Frankenfeld, J.W.; Taylor, W.F.

1980-11-01T23:59:59.000Z

347

MAE Seminar Series Evolution of CAD to CAx to Product  

E-Print Network [OSTI]

MAE Seminar Series Evolution of CAD to CAx to Product Lifecycle Management Applications Rick, this presentation will review the history of the CAD industry while highlighting the evolution from CAD to CAx

Krovi, Venkat

348

Introduction Evolution of maternal effects: past and present  

E-Print Network [OSTI]

and Systematics paper by Roach & Wulff (1987: `Maternal effects in plants') and the seminal theoretical article in Evolution by Kirkpatrick & Lande (1989: `The evolution of maternal characters'). Roach & Wulff (1987) were

Badyaev, Alex

349

Synthetic Metagenomics: Converting digital information back to Biology (2013 DOE JGI Genomics of Energy and Environment 8th Annual User Meeting)  

SciTech Connect (OSTI)

Sam Deutsch of the DOE JGI on "Synthetic Metagenomics: Converting digital information back to Biology" at the 8th Annual Genomics of Energy & Environment Meeting in Walnut Creek, Calif.

Deutsch, Sam [DOE Joint Genome Institute

2013-03-01T23:59:59.000Z

350

The C. elegans class A synthetic multivulva genes inhibit ectopic RAS-mediated vulval development by tightly restricting expression of lin-3 EGF  

E-Print Network [OSTI]

The class A and B synthetic multivulva (synMuv) genes of C. elegans redundantly antagonize an EGF/Ras pathway to prevent ectopic vulval induction. The class B synMuv genes encode many proteins known to remodel chromatin ...

Saffer, Adam M

2011-01-01T23:59:59.000Z

351

Title: Time to scale-up. Standfirst: The construction of modular and scalable synthetic gene networks is now a goal within  

E-Print Network [OSTI]

Title: Time to scale-up. Standfirst: The construction of modular and scalable synthetic gene demonstrated. Next, they scaled up the system by constructing a circuit with three inputs to execute a pre

Babu, M. Madan

352

Optimization Online - A Parallel Evolution Strategy for an Earth ...  

E-Print Network [OSTI]

Jan 15, 2015 ... Keywords: Evolution strategy (ES), global convergence, Earth imaging, inverse problem, high performance computing (HPC), search space ...

Y. Diouane

2015-01-15T23:59:59.000Z

353

Proceeding of the International Conference on Nonlinear Evolution ...  

E-Print Network [OSTI]

Proceeding of the International Conference on Nonlinear Evolution Partial. Differential Equations, June 1993, Beijing, China. NONLINEAR GALERKIN METHOD.

354

A Framework for Schema Evolution by Meta Object Manipulation \\Lambda  

E-Print Network [OSTI]

A Framework for Schema Evolution by Meta Object Manipulation \\Lambda Markus Tresch Department@inf.ethz.ch Abstract In this paper we address the problem of schema evolution in object­oriented da­ tabase systems. Most currently available database prototypes either completely lack schema evolution facilities

Scholl, Marc H.

355

The influence of learning on evolution Presented by David Oren  

E-Print Network [OSTI]

explains why learning influences evolution in these simulations. In order to overcome these limitationsThe influence of learning on evolution Presented by David Oren April 21st, 1998 Abstract In this seminar we will examine the article ``The influence of learning on evolution'' by Stefano Nolfi

Ruppin, Eytan

356

Directed evolution tools in bioproduct and bioprocess development 49 Chapter 3. Directed Evolution Tools in Bioproduct and  

E-Print Network [OSTI]

Directed evolution tools in bioproduct and bioprocess development 49 Chapter 3. Directed Evolution Tools in Bioproduct and Bioprocess Development Sheryl B. Rubin-Pitela , Catherine M-H. Chob , Wilfred process conditions and customize the reactions they catalyze. Directed evolution tools have been used

Zhao, Huimin

357

Abigail Golden, Dept. of Ecology, Evolution and Environmental Biology Mentor: Dr. Joshua Drew, Dept. of Ecology, Evolution and Environmental Biology  

E-Print Network [OSTI]

Abigail Golden, Dept. of Ecology, Evolution and Environmental Biology Mentor: Dr. Joshua Drew, Dept. of Ecology, Evolution and Environmental Biology Advisor: Dr. Elisa Bone, Dept. of Ecology, Evolution their fishing practices, which species they targeted most heavily, and aspects of their traditional ecological

358

Summary report : direct approaches for recycling carbon dioxide into synthetic fuel.  

SciTech Connect (OSTI)

The consumption of petroleum by the transportation sector in the United States is roughly equivalent to petroleum imports into the country, which have totaled over 12 million barrels a day every year since 2004. This reliance on foreign oil is a strategic vulnerability for the economy and national security. Further, the effect of unmitigated CO{sub 2} releases on the global climate is a growing concern both here and abroad. Independence from problematic oil producers can be achieved to a great degree through the utilization of non-conventional hydrocarbon resources such as coal, oil-shale and tarsands. However, tapping into and converting these resources into liquid fuels exacerbates green house gas (GHG) emissions as they are carbon rich, but hydrogen deficient. Revolutionary thinking about energy and fuels must be adopted. We must recognize that hydrocarbon fuels are ideal energy carriers, but not primary energy sources. The energy stored in a chemical fuel is released for utilization by oxidation. In the case of hydrogen fuel the chemical product is water; in the case of a hydrocarbon fuel, water and carbon dioxide are produced. The hydrogen economy envisions a cycle in which H{sub 2}O is re-energized by splitting water into H{sub 2} and O{sub 2}, by electrolysis for example. We envision a hydrocarbon analogy in which both carbon dioxide and water are re-energized through the application of a persistent energy source (e.g. solar or nuclear). This is of course essentially what the process of photosynthesis accomplishes, albeit with a relatively low sunlight-to-hydrocarbon efficiency. The goal of this project then was the creation of a direct and efficient process for the solar or nuclear driven thermochemical conversion of CO{sub 2} to CO (and O{sub 2}), one of the basic building blocks of synthetic fuels. This process would potentially provide the basis for an alternate hydrocarbon economy that is carbon neutral, provides a pathway to energy independence, and is compatible with much of the existing fuel infrastructure.

Allendorf, Mark D. (Sandia National Laboratories, Livermore, CA); Ambrosini, Andrea; Diver, Richard B., Jr.; Siegel, Nathan Phillip; Miller, James Edward; Gelbard, Fred; Evans, Lindsey R.

2009-01-01T23:59:59.000Z

359

Morphological Evolution of Galaxies to z=4  

E-Print Network [OSTI]

Galaxies have clearly evolved since the universe was 1 Gyr old, but methods to trace and quantify this evolution are still in their infancy. In this paper I demonstrate that with the careful use of a `physical morphology' it is possible to determine quantitatively how the process of galaxy evolution is occurring out to z=4. Using a system of parameters that traces star formation and galaxy interactions, I show how distinct galaxy populations at high-z can be identified in deep high-resolution optical and NIR images. These tools are also used to measure a potential merger fraction of galaxies from 0

Christopher J. Conselice

2000-12-01T23:59:59.000Z

360

The Evolution of Galaxies: A Metaphysics Viewpoint  

E-Print Network [OSTI]

This is the written version of an invited review talk for the 13 Feb 2004 AAAS Meeting in Seattle. The talk's goal is to present a philosophical view of extragalactic astronomy as it applies to the sub-field of galaxy evolution. The talk is divided into three parts: 1) How we got to where we are (technology drivers to our science goals), 2) What's new and special (how that technology has achieved our recent science results) and 3) How an improved worldview will help us in the near future. The intended audience for this talk is a generally knowledgeable scientist, but not an astronomer by training. This talk is also not intended to be a complete review of the field of galaxy evolution and only includes a few recent results extracted from the astro-ph archives to present the current state of our field.

J. Schombert

2004-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Spatial and Spectral evolution of Turbulence Spectra  

SciTech Connect (OSTI)

We present a general formulation of a theory of spreading of turbulence based on nonlinear mode couplings, which is inherently linked to spectral evolution. We present a derivation from simple two-field perspective based upon a gradien diffusion hypothesis, justified by a two scale direct interaction approximation (TSDIA) for weak turbulence. The complexity and anisotropy of spatial and spectral dynamics, however, limits our analysis to examination of different classes of triad interactions. We demonstrate that radially extended eddys, are the most effective structures in promoting spreading of turbulence. Thus, spectral evolution that tends towards such eddies, facilitate spatial spreading. We also show that, in a two field model, due to their respective spectral tendencies, internal energy spreads faster than kinetic energy.

Guercan, Oe. D.; Diamond, P. H. [Center for Astrophysics and Space Sciences, La Jolla, CA 92093-0424 (United States); Department of Physics University of California at San Diego, La Jolla, CA 92093-0424 (United States); Department of Physics, University of California at San Diego, La Jolla, CA 92093-0319 (United States); Hahm, T. S. [Princeton Plasma Physics Laboratory, Princeton, NJ 08543-0451 (United States)

2006-11-30T23:59:59.000Z

362

Laguerre method to solve parton evolution equations  

SciTech Connect (OSTI)

The DGLAP evolution equations for non-singlet sector of parton density is solved in x-space based on Laguerre polynomial expansion. High numerical accuracy is achieved by expanding over a set of approximately 30 polynomials. The result of evolved parton densities to high energy scales are in good agreement with phenomenological GRV model. To improve the results we can employ a constituent quark model.

Mirjalili, A. [Physics Department, Yazd University, P.O.B. 89195-741, Yazd (Iran, Islamic Republic of); School of Particles and Accelerators (IPM), Institute for Research in Fundamental Sciences, 19395-5531, Tehran (Iran, Islamic Republic of); Yazdanpanah, M. M. [Physics Department, Shahid-Bahonar University, Kerman (Iran, Islamic Republic of); School of Particles and Accelerators (IPM), Institute for Research in Fundamental Sciences, 19395-5531, Tehran (Iran, Islamic Republic of); Sharifinejad, H. R. [Physics Department, Yazd University, P.O.B. 89195-741, Yazd (Iran, Islamic Republic of)

2011-05-23T23:59:59.000Z

363

The Evolution of Stellar Exponential Discs  

E-Print Network [OSTI]

Models of disc galaxies which invoke viscosity-driven radial flows have long been known to provide a natural explanation for the origin of stellar exponential discs, under the assumption that the star formation and viscous timescales are comparable. We present models which invoke simultaneous star formation, viscous redistribution of gas and cosmologically-motivated gaseous infall and explore the predictions such models make for the scale length evolution and radial star formation history of galactic stellar discs. While the inclusion of viscous flows is essential for ensuring that the stellar disc is always exponential over a significant range in radius, we find that such flows play essentially no role in determining the evolution of the disc scale length. In models in which the main infall phase precedes the onset of star formation and viscous evolution, we find the exponential scale length to be rather invariant with time. On the other hand, models in which star formation/viscous evolution and infall occur concurrently result in a smoothly increasing scale length with time, reflecting the mean angular momentum of material which has fallen in at any given epoch. The disc stellar populations in these models are predominantly young (ie. ages < 5 Gyr) beyond a few scale lengths. In both cases, viscous flows are entirely responsible for transporting material to very large radii. We discuss existing observational constraints on these models from studies of both local and moderate redshift disc galaxies. In particular, a good agreement is found between the solar neighbourhood star formation history predicted by our infall model and the recent observational determination of this quantity by Rocha-Pinto et al (2000).

Annette Ferguson; Cathie Clarke

2001-03-14T23:59:59.000Z

364

Sterrewacht Gas evolution in protoplanetary disks  

E-Print Network [OSTI]

Sterrewacht Leiden Gas evolution in protoplanetary disks W.F. Thi , E.F. van Dishoeck , G are surrounded by 10 ­10 M of gas+dust in disks with sizes of 100­400 AU. This material may form extrasolar planets. 3 Disks have also been imaged around Vega-like stars, but are thought to be gas­poor with "!#$ M

Zadelhoff, Gerd-Jan van

365

Symmetry and Evolution in Quantum Gravity  

E-Print Network [OSTI]

We propose an operator constraint equation for the wavefunction of the Universe that admits genuine evolution. While the corresponding classical theory is equivalent to the canonical decomposition of General Relativity, the quantum theory makes predictions that are distinct from Wheeler-DeWitt cosmology. Furthermore, the local symmetry principle - and corresponding observables - of the theory have a direct interpretation in terms of a conventional gauge theory, where the gauge symmetry group is that of spatial conformal diffeomorphisms (that preserve the spatial volume of the Universe). The global evolution is in terms of an arbitrary parameter that serves only as an unobservable label for successive states of the Universe. Our proposal follows unambiguously from a suggestion of York whereby the independently specifiable initial data in the action principle of General Relativity is given by a conformal geometry and the spatial average of the York time on the spacelike hypersurfaces that bound the variation. Remarkably, such a variational principle uniquely selects the form of the constraints of the theory so that we can establish a precise notion of both symmetry and evolution in quantum gravity.

Sean Gryb; Karim Thebault

2014-03-25T23:59:59.000Z

366

Markovian evolution of strongly coupled harmonic oscillators  

E-Print Network [OSTI]

We investigate how to model Markovian evolution of coupled harmonic oscillators, each of them interacting with a local environment. When the coupling between the oscillators is weak, dissipation may be modeled using local Lindblad terms for each of the oscillators in the master equation, as is commonly done. When the coupling between oscillators is strong, this model may become invalid. We derive a master equation for two coupled harmonic oscillators which are subject to individual heat baths modeled by a collection of harmonic oscillators, and show that this master equation in general contains non-local Lindblad terms. We compare the resulting time evolution with that obtained for dissipation through local Lindblad terms for each individual oscillator, and show that the evolution is different in the two cases. In particular, the two descriptions give different predictions for the steady state and for the entanglement between strongly coupled oscillators. This shows that when describing strongly coupled harmonic oscillators, one must take great care in how dissipation is modeled, and that a description using local Lindblad terms may fail. This may be particularly relevant when attempting to generate entangled states of strongly coupled quantum systems.

Chaitanya Joshi; Patrik Ohberg; James D. Cresser; Erika Andersson

2014-12-16T23:59:59.000Z

367

Flux Expulsion - Field Evolution in Neutron Stars  

E-Print Network [OSTI]

Models for the evolution of magnetic fields of neutron stars are constructed, assuming the field is embedded in the proton superconducting core of the star. The rate of expulsion of the magnetic flux out of the core, or equivalently the velocity of outward motion of flux-carrying proton-vortices is determined from a solution of the Magnus equation of motion for these vortices. A force due to the pinning interaction between the proton-vortices and the neutron-superfluid vortices is also taken into account in addition to the other more conventional forces acting on the proton-vortices. Alternative models for the field evolution are considered based on the different possibilities discussed for the effective values of the various forces. The coupled spin and magnetic evolution of single pulsars as well as those processed in low-mass binary systems are computed, for each of the models. The predicted lifetimes of active pulsars, field strengths of the very old neutron stars, and distribution of the magnetic fields versus orbital periods in low-mass binary pulsars are used to test the adopted field decay models. Contrary to the earlier claims, the buoyancy is argued to be the dominant driving cause of the flux expulsion, for the single as well as the binary neutron stars. However, the pinning is also found to play a crucial role which is necessary to account for the observed low field binary and millisecond pulsars.

M. Jahan-Miri

1999-10-27T23:59:59.000Z

368

An assessment of the usefulness of 5 new synthetic pyrethroids in IPM programs for tobacco budworm control in cotton  

E-Print Network [OSTI]

New Synthetic Pyrethroids in IPM Programs for Tobacco Budworm Control in Cotton. (Mlay 1981) Sinnappu Victor Rajakulendran, B. Sc. (Agri. ) University of Sri Lanka Chairman of Advisory Committee: Dr. F. W. Plapp, Jr. Toxicity measurements were...-methyl ethyl) benzene acetate) and fluvalinate. Toxicity was de- termined to larvae of the tobacco budworm Heliothis (P. ), t d lt 1 *f 't p 't, ~tl t' sonorensis (Carlson), and to larvae of its predator, C~t * ddt pl ). Al*, ll d' f t t d as a...

Rajakulendran, Sinnappu Victor

1981-01-01T23:59:59.000Z

369

Textural properties of synthetic nano-calcite produced by hydrothermal carbonation of calcium hydroxide  

E-Print Network [OSTI]

The hydrothermal carbonation of calcium hydroxide (Ca(OH)2) at high pressure of CO2 (initial PCO2 1/4 55 bar) and moderate to high temperature (30 and 90 1C) was used to synthesize fine particles of calcite. This method allows a high carbonation efficiency (about 95% of Ca(OH)2-CaCO3 conversion), a significant production rate (48 kg/m3 h) and high purity of product (about 96%). However, the various initial physicochemical conditions have a strong influence on the crystal size and surface area of the synthesized calcite crystals. The present study is focused on the estimation of the textural properties of synthesized calcite (morphology, specific surface area, average particle size, particle size distribution and particle size evolution with reaction time), using Rietveld refinements of X-ray diffraction (XRD) spectra, Brunauer-Emmett-Teller (BET) measurements, and scanning electron microscope (SEM) and transmission electron microscope (TEM) observations. This study demonstrate that the pressure, the temperatu...

Montes-Hernandez, German; Charlet, L; Tisserand, Delphine; Renard, F

2008-01-01T23:59:59.000Z

370

A solenoidal synthetic field and the non-Abelian Aharonov-Bohm effects in neutral atoms  

E-Print Network [OSTI]

Cold neutral atoms provide a versatile and controllable platform for emulating various quantum systems. Despite efforts to develop artificial gauge fields in these systems, realizing a unique ideal-solenoid-shaped magnetic field within the quantum domain in any real-world physical system remains elusive. Here we propose a scheme to generate a "hairline" solenoid with an extremely small size around 1 micrometer which is smaller than the typical coherence length in cold atoms. Correspondingly, interference effects will play a role in transport. Despite the small size, the magnetic flux imposed on the atoms is very large thanks to the very strong field generated inside the solenoid. By arranging different sets of Laguerre-Gauss (LG) lasers, the generation of Abelian and non-Abelian SU(2) lattice gauge fields is proposed for neutral atoms in ring- and square-shaped optical lattices. As an application, interference patterns of the magnetic type-I Aharonov-Bohm (AB) effect are obtained by evolving atoms along a circle over several tens of lattice cells. During the evolution, the quantum coherence is maintained and the atoms are exposed to a large magnetic flux. The scheme requires only standard optical access, and is robust to weak particle interactions.

Ming-Xia Huo; Nie Wei; David A. W. Hutchinson; Leong Chuan Kwek

2014-08-11T23:59:59.000Z

371

Effects of Water in Synthetic Lubricant Systems and Clathrate Formation: A Literature Search and Review  

SciTech Connect (OSTI)

An extensive literature search and a confidential survey were critically analyzed to determine the effects of water on the stability of hydrofluorocarbon/synthetic lubricant systems and to identify key areas requiring further investigation. Following are highlights from the analysis: Clathrate hydrates are solid solutions formed when water molecules are linked through hydrogen bonding creating cavities that can enclose various guest molecules from hydrate formers, such as hydrofluorocarbons R-32, R-125, R-134a, R-407C and R-410A. The four methods for preventing clathrate formation were drying the gas, heating it, reducing its pressure, or using inhibitors. The hydrolysis of polyolester lubricants was mostly acid-catalyzed and its reaction rate constant typically followed the Arrhenius equation of an activated process. Hydrolytic stability improved with hindered molecular structures, and with the presence of acid catcher additives and desiccants. Water vapor can effect the adsorption of long-chain fatty acids and the chemistry of formation of protective oxide film. However, these effects on lubrication can be either positive or negative. Fifty to sixty percent of the moisture injected into an air-conditioning system remained in the refrigerant and the rest mixed with the compressor oil. In an automotive air-conditioning system using R-134a, ice would form at 0 C evaporating temperature when the water content in the vapor refrigerant on the low-pressure side was more than 350 ppm. Moisture would cause the embrittlement of polyethylene terephthalate and the hydrolysis of polyesters, but would reduce the effect of amine additives on fluoroelastomer rubbers. The reactions of water with refrigerants and lubricants would cause formicary and large-pit corrosion in copper tubes, as well as copper plating and sludge formation. Moreover, blockage of capillary tubes increased rapidly in the presence of water. Twenty-four companies responded to the survey. From the responses, the water concentrations specified and expected for different refrigerant/lubricant systems varied depending on the products, their capacities and applications, and also on the companies. Among the problems associated with high moisture level, lubricant breakdown was of greatest concern, followed by acid formation, compressor failure and expansion valve sticking. The following research topics are suggested: 1. The air-conditioning and refrigeration industry needs to measure and record the water content and total acid number of the lubricant of newly installed systems as well as operating systems that are shutdown for service or repair. The reason for the shutdown needs to be documented. A database can then be established to correlate water content with type and cause of breakdown. 2. Detailed studies on the distribution of water in refrigeration and air-conditioning systems should be conducted to pinpoint problem areas associated with free water. 3. Research is needed to validate the current theories and mechanisms of formicary corrosion. Corrosion inhibitors need to be developed. 4. The conditions for clathrate formation and decomposition of other alternative refrigerants, such as R-23, R-41, R-116, R-125, R-143a, R-404A and R-507C, and water should be determined to avoid possible problems associated with tube plugging. The mechanism by which water facilitates or hinders lubrication needs to be studied.

Rohatgi, Ngoc Dung T.

2001-08-08T23:59:59.000Z

372

The orbital evolution of planets in disks  

E-Print Network [OSTI]

The orbital parameters of the observed extrasolar planets differ strongly from those of our own solar system. The differences include planets with high masses, small semi-major axis and large eccentricities. We performed numerical computations of embedded planets in disks and follow their mass growth and orbital evolution over several thousand periods. We find that planets do migrate inwards on timescales of about $10^5$ years on nearly circular orbits, during which they may grow up to about 5 Jupiter masses. The interaction of the disk with several planets may halt the migration process and lead to a system similar to the solar planetary system.

Wilhelm Kley

2000-04-04T23:59:59.000Z

373

Evolution of Structures in Generalized Gravity Theories  

E-Print Network [OSTI]

A broad class of generalized Einstein's gravity can be cast into Einstein's gravity with a minimally coupled scalar field using suitable conformal rescaling of the metric. Using this conformal equivalence between the theories, we derive the equations for the background and the perturbations, and the general asymptotic solutions for the perturbations in the generalized Einstein's gravity from the simple results known in the minimally coupled scalar field. Results for the scalar and tensor perturbations can be presented in unified forms. The large scale evolutions for both modes are characterized by corresponding conserved quantities. We also present the normalization condition for canonical quantization.

J. Hwang

1996-05-12T23:59:59.000Z

374

Unitary Evolution on a Discrete Phase Space  

E-Print Network [OSTI]

We construct unitary evolution operators on a phase space with power of two discretization. These operators realize the metaplectic representation of the modular group SL(2,Z_{2^n}). It acts in a natural way on the coordinates of the non-commutative 2-torus, T_{2^n}^2$ and thus is relevant for non-commutative field theories as well as theories of quantum space-time. The class of operators may also be useful for the efficient realization of new quantum algorithms.

E. G. Floratos; S. Nicolis

2005-10-06T23:59:59.000Z

375

Binary Evolution in World Wide Web  

E-Print Network [OSTI]

We present a WWW-version of the {\\it Scenario Machine} - a computer code designed to calculate the evolution of close binary stellar systems. The Internet users can directly access to the code and calculate binary evolutionary tracks with parameters at the user's will. The program is running on the {\\it Pentium} server of the Division of the Relativistic Astrophysics of the Sternberg Astronimical Institute (http://xray.sai.msu.su/ ). The results are presented both in the form of tables and graphic diagrams. The work is always in progress. More possibilities for Internet users are intended to become available in the near future.

S. N. Nazin; V. M. Lipunov; I. E. Panchenko; K. A. Postnov; M. E. Prokhorov; S. B. Popov

1996-05-29T23:59:59.000Z

376

EVOLUTION OF PROGENITORS FOR ELECTRON CAPTURE SUPERNOVAE  

SciTech Connect (OSTI)

We provide progenitor models for electron capture supernovae (ECSNe) with detailed evolutionary calculation. We include minor electron capture nuclei using a large nuclear reaction network with updated reaction rates. For electron capture, the Coulomb correction of rates is treated and the contribution from neutron-rich isotopes is taken into account in each nuclear statistical equilibrium (NSE) composition. We calculate the evolution of the most massive super asymptotic giant branch stars and show that these stars undergo off-center carbon burning and form ONe cores at the center. These cores become heavier up to the critical mass of 1.367 M{sub Sun} and keep contracting even after the initiation of O+Ne deflagration. Inclusion of minor electron capture nuclei causes convective URCA cooling during the contraction phase, but the effect on the progenitor evolution is small. On the other hand, electron capture by neutron-rich isotopes in the NSE region has a more significant effect. We discuss the uniqueness of the critical core mass for ECSNe and the effect of wind mass loss on the plausibility of our models for ECSN progenitors.

Takahashi, Koh; Umeda, Hideyuki [Department of Astronomy, University of Tokyo, Tokyo 113-0033 (Japan); Yoshida, Takashi, E-mail: ktakahashi@astron.s.u-tokyo.ac.jp, E-mail: umeda@astron.s.u-tokyo.ac.jp, E-mail: yoshida@yukawa.kyoto-u.ac.jp [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2013-07-01T23:59:59.000Z

377

The Formation and Evolution of Prestellar Cores  

E-Print Network [OSTI]

Improving our understanding of the initial conditions and earliest stages of star formation is crucial to gain insight into the origin of stellar masses, multiple systems, and protoplanetary disks. We review the properties of low-mass dense cores as derived from recent millimeter/submillimeter observations of nearby molecular clouds and discuss them in the context of various contemporary scenarios for cloud core formation and evolution. None of the extreme scenarios can explain all observations. Pure laminar ambipolar diffusion has relatively long growth times for typical ionization levels and has difficulty satisfying core lifetime constraints. Purely hydrodynamic pictures have trouble accounting for the inefficiency of core formation and the detailed velocity structure of individual cores. A possible favorable scenario is a mixed model involving gravitational fragmentation of turbulent molecular clouds close to magnetic criticality. The evolution of the magnetic field and angular momentum in individual cloud cores after the onset of gravitational collapse is also discussed. In particular, we stress the importance of radiation-magnetohydrodynamical processes and resistive MHD effects during the protostellar phase. We also emphasize the role of the formation of the short-lived first (protostellar) core in providing a chance for sub-fragmentation into binary systems and triggering MHD outflows. Future submillimeter facilities such as Herschel and ALMA will soon provide major new observational constraints in this field. On the theoretical side, an important challenge for the future will be to link the formation of molecular clouds and prestellar cores in a coherent picture.

Philippe André; Shantanu Basu; Shu-ichiro Inutsuka

2008-01-28T23:59:59.000Z

378

Galactic and Magellanic Evolution with the SKA  

E-Print Network [OSTI]

As we strive to understand how galaxies evolve it is crucial that we resolve physical processes and test emerging theories in nearby systems that we can observe in great detail. Our own Galaxy, the Milky Way, and the nearby Magellanic Clouds provide unique windows into the evolution of galaxies, each with its own metallicity and star formation rate. These laboratories allow us to study with more detail than anywhere else in the Universe how galaxies acquire fresh gas to fuel their continuing star formation, how they exchange gas with the surrounding intergalactic medium, and turn warm, diffuse gas into molecular clouds and ultimately stars. The $\\lambda$21-cm line of atomic hydrogen (HI) is an excellent tracer of these physical processes. With the SKA we will finally have the combination of surface brightness sensitivity, point source sensitivity and angular resolution to transform our understanding of the evolution of gas in the Milky Way, all the way from the halo down to the formation of individual molecul...

McClure-Griffiths, Naomi M; Murray, Claire E; Li, Di; Dickey, John M; Vazquez-Semadeni, Enrique; Peek, Josh E G; Putman, Mary; Clark, Susan E; Miville-Deschenes, Marc-Antoine; Bland-Hawthorn, Joss; Staveley-Smith, Lister

2015-01-01T23:59:59.000Z

379

Schrodinger Evolution for the Universe: Reparametrization  

E-Print Network [OSTI]

Starting from a generalized Hamilton-Jacobi formalism, we develop a new framework for constructing observables and their evolution in theories invariant under global time reparametrizations. Our proposal relaxes the usual Dirac prescription for the observables of a totally constrained system (`perennials') and allows one to recover the influential partial and complete observables approach in a particular limit. Difficulties such as the non-unitary evolution of the complete observables in terms of certain partial observables are explained as a breakdown of this limit. Identification of our observables (`mutables') relies upon a physical distinction between gauge symmetries that exist at the level of histories and states (`Type 1'), and those that exist at the level of histories and not states (`Type 2'). This distinction resolves a tension in the literature concerning the physical interpretation of the partial observables and allows for a richer class of observables in the quantum theory. There is the potential for the application of our proposal to the quantization of gravity when understood in terms of the Shape Dynamics formalism.

Sean Gryb; Karim Thebault

2015-02-04T23:59:59.000Z

380

Advancing Reactive Tracer Methods for Measuring Thermal Evolution...  

Open Energy Info (EERE)

Advancing Reactive Tracer Methods for Measuring Thermal Evolution in CO2- and Water-Based Geothermal Reservoirs Geothermal Lab Call Project Jump to: navigation, search Last...

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

An epistatic ratchet constrains the direction of glucocorticoid receptor evolution  

E-Print Network [OSTI]

LETTERS An epistatic ratchet constrains the direction of glucocorticoid receptor evolution Jamie T required to support the ancestral conformation. Unless these ratchet-like epistatic substitutions

Nachman, Michael

382

ancient independent evolution: Topics by E-print Network  

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

Problem Astrophysics (arXiv) Summary: We show that the evolution of the quintessence energy density OmegaQ is model independent in an accelerating universe. The...

383

Fracture Evolution Following a Hydraulic Stimulation within an...  

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

Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir Principal Investigator Peter Rose Energy and Geoscience Institute at the University of Utah Project...

384

Chemistry & Biology Directed Evolution of the Nonribosomal Peptide  

E-Print Network [OSTI]

Chemistry & Biology Article Directed Evolution of the Nonribosomal Peptide Synthetase Adm University of Illinois, Urbana, IL 61801, USA 3Department of Chemistry 4The Chemistry of Life Processes

Zhao, Huimin

385

Nanoscale Alloying, Phase-Segregation, and Core-Shell Evolution...  

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

Alloying, Phase-Segregation, and Core-Shell Evolution of Gold-Platinum Nanoparticles and Their Electrocatalytic Effect Nanoscale Alloying, Phase-Segregation, and Core-Shell...

386

Recent Advances in Shell Evolution with Shell-Model Calculations  

E-Print Network [OSTI]

Shell evolution in exotic nuclei is investigated with large-scale shell-model calculations. After presenting that the central and tensor forces produce distinctive ways of shell evolution, we show several recent results: (i) evolution of single-particle-like levels in antimony and cupper isotopes, (ii) shape coexistence in nickel isotopes understood in terms of configuration-dependent shell structure, and (iii) prediction of the evolution of the recently established $N=34$ magic number towards smaller proton numbers. In any case, large-scale shell-model calculations play indispensable roles in describing the interplay between single-particle character and correlation.

Yutaka Utsuno; Takaharu Otsuka; Yusuke Tsunoda; Noritaka Shimizu; Michio Honma; Tomoaki Togashi; Takahiro Mizusaki

2014-09-16T23:59:59.000Z

387

Single nanopore transport of synthetic and biological polyelectrolytes in three-dimensional hybrid microfluidic/nanofluidic devices  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

This paper presents a study of electrokinetic transport in single nanopores integrated into vertically-stacked three-dimensional hybrid microfluidic/nanofluidic structures. In these devices single nanopores, created by focused ion beam (FIB) milling in thin polymer films, provide fluidic connection between two vertically separated, perpendicular microfluidic channels. Experiments address both systems in which the nanoporous membrane is composed of the same (homojunction) or different (heterojunction) polymer as the microfluidic channels. These devices are then used to study the electrokinetic transport properties of synthetic (i.e., polystyrene sulfonate and polyallylamine) and biological (i.e.,DNA) polyelectrolytes across these nanopores. Single nanopore transport of polyelectrolytes across these nanopores using both electrical current measurements and confocal microscopy. Both optical and electrical measurements indicate that electroosmotic transport is predominant over electrophoresis in single nanopores with d > 180 nm, consistent with results obtained under similar conditions for nanocapillary array membranes.

King, Travis L. [Univ. of Illinois at Urbana-Champaign, IL (United States). Department of Chemistry; Gatimu, Enid N.; Bohn, Paul W.

2009-01-02T23:59:59.000Z

388

Slurry growth, gas retention, and flammable gas generation by Hanford radioactive waste tanks: Synthetic waste studies, FY 1991  

SciTech Connect (OSTI)

Of 177 high-level waste storage tanks on the Hanford Site, 23 have been placed on a safety watch list because they are suspected of producing flammable gases in flammable or explosive concentrate. One tankin particular, Tank 241-SY-101 (Tank 101-SY), has exhibited slow increases in waste volume followed by a rapid decrease accompanied by venting of large quantities of gases. The purpose of this study is to help determine the processes by which flammable gases are produced, retained, and eventually released from Tank 101-SY. Waste composition data for single- and double-shell waste tanks on the flammable gas watch listare critically reviewed. The results of laboratory studies using synthetic double-shell wastes are summarized, including physical and chemical properties of crusts that are formed, the stoichiometry and rate ofgas generation, and mechanisms responsible for formation of a floating crust.

Bryan, S.A.; Pederson, L.R.; Ryan, J.L.; Scheele, R.D.; Tingey, J.M.

1992-08-01T23:59:59.000Z

389

Black Hole Thermodynamics Based on Unitary Evolutions  

E-Print Network [OSTI]

In this paper, we try to construct black hole thermodynamics based on the fact that, the formation and evaporation of a black hole can be described by quantum unitary evolutions. First, we show that the Bekenstein-Hawking entropy $S_{BH}$ cannot be a Boltzmann or thermal entropy. To confirm this statement, we show that the original black hole's "first law" cannot be treated as the first law of thermodynamics formally, due to some missing metric perturbations caused by matter. Then, by including those (quantum) metric perturbations, we show that the black hole formation and evaporation can be described in a unitary manner effectively, through a quantum channel between the exterior and interior of the event horizon. In this way, the paradoxes of information loss and firewall can be resolved effectively. Finally, we show that black hole thermodynamics can be constructed in an ordinary way, by constructing statistical mechanics.

Feng, Yu-Lei

2015-01-01T23:59:59.000Z

390

The Nonlinear Evolution of Rare Events  

E-Print Network [OSTI]

In this paper I consider the nonlinear evolution of a rare density fluctuation in a random density field with Gaussian fluctuations, and I rigorously show that it follows the spherical collapse dynamics applied to its mean initial profile. This result is valid for any cosmological model and is independent of the shape of the power spectrum. In the early stages of the dynamics the density contrast of the fluctuation is seen to follow with a good accuracy the form $$\\delta=(1-\\delta_L/1.5)^{-1.5}-1,$$ where $\\delta_L$ is the linearly extrapolated overdensity. I then investigate the validity domain of the rare event approximation in terms of the parameter $\

F. Bernardeau

1993-11-25T23:59:59.000Z

391

Evolution of federal support of science  

SciTech Connect (OSTI)

Evolution of Federal Support of Science'' is Dr. G. T. Seaborg's speech presented at the symposium on the Establishment of Research Support Agencies, held on August 30, 1990, in Washington, DC. He gives a brief history on the development of nuclear energy from the discovery of fission in 1938 to the completion of uranium bombs in 1944. He also covered the scientific activities during the war, which included the establishment of National Defense Research Committee, the Office of Scientific Research and Development, and the Atomic Energy Act. He discussed the debate between the little science'' and the big science,'' which requires hundreds of billions of dollars, such as the superconducting super collider. Dr. Seaborg believes that our country can afford to support both research activities, if we could reduce the expenses of military expansion. 22 figs.

Seaborg, G.T.

1990-08-01T23:59:59.000Z

392

Magnetic island evolution in hot ion plasmas  

SciTech Connect (OSTI)

Effects of finite ion temperature on magnetic island evolution are studied by means of numerical simulations of a reduced set of two-fluid equations which include ion as well as electron diamagnetism in slab geometry. The polarization current is found to be almost an order of magnitude larger in hot than in cold ion plasmas, due to the strong shear of ion velocity around the separatrix of the magnetic islands. As a function of the island width, the propagation speed decreases from the electron drift velocity (for islands thinner than the Larmor radius) to values close to the guiding-center velocity (for islands of order 10 times the Larmor radius). In the latter regime, the polarization current is destabilizing (i.e., it drives magnetic island growth). This is in contrast to cold ion plasmas, where the polarization current is generally found to have a healing effect on freely propagating magnetic island.

Ishizawa, A.; Nakajima, N. [National Institute for Fusion Science, Toki 509-5292 (Japan); Waelbroeck, F. L.; Fitzpatrick, R.; Horton, W. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)

2012-07-15T23:59:59.000Z

393

Stochastic evolution equations with random generators  

E-Print Network [OSTI]

maximal inequality for the Skorohod integral deduced from the It ˆ o’s formula for this anticipating stochastic integral. 1. Introduction. In this paper we study nonlinear stochastic evolution equations of the form X t = ? + ? t 0 #3;A#3;s#4;X s +F#3;s#7;X... s #4;#4;ds+ ? t 0 B#3;s#7;X s #4;dW s #7; t ? #6;0#7;T#7;#7;(1.1) whereW is a cylindrical Wiener process on a Hilbert spaceU. The solution pro- cess X = #8;X t #7; t ? #6;0#7;T#7; is a continuous and adapted process taking values in a Hilbert space H...

Leon, Jorge A.; Nualart, David

1998-05-01T23:59:59.000Z

394

Infrared instability from nonlinear QCD evolution  

E-Print Network [OSTI]

Using the Balitsky-Kovchegov (BK) equation as an explicit example, we show that nonlinear QCD evolution leads to an instability in the propagation toward the infrared of the gluon transverse momentum distribution, if one starts with a state with an infrared cut-off. This effect takes the mathematical form of rapidly moving traveling wave solutions of the BK equation, which we investigate by numerical simulations. These traveling wave solutions are different from those governing the transition to saturation, which propagate towards the ultraviolet. The infrared wave speed, formally infinite for the leading order QCD kernel, is determined by higher order corrections. This mechanism could play a role in the rapid decrease of the mean free path in the Color Glass Condensate scenario for heavy ion collisions.

R. Enberg; R. Peschanski

2006-01-13T23:59:59.000Z

395

The Evolution of Cloud Computing in ATLAS  

E-Print Network [OSTI]

The ATLAS experiment has successfully incorporated cloud computing technology and cloud resources into its primarily grid-based model of distributed computing. Cloud R&D activities continue to mature and transition into stable production systems, while ongoing evolutionary changes are still needed to adapt and refine the approaches used, in response to changes in prevailing cloud technology. In addition, completely new developments are needed to handle emerging requirements. This work will describe the overall evolution of cloud computing in ATLAS. The current status of the VM management systems used for harnessing IAAS resources will be discussed. Monitoring and accounting systems tailored for clouds are needed to complete the integration of cloud resources within ATLAS' distributed computing framework. We are developing and deploying new solutions to address the challenge of operation in a geographically distributed multi-cloud scenario, including a system for managing VM images across multiple clouds, ...

Taylor, Ryan P.; The ATLAS collaboration; Love, Peter; Leblanc, Matthew Edgar; Di Girolamo, Alessandro; Paterson, Michael; Gable, Ian; Sobie, Randall; Field, Laurence

2015-01-01T23:59:59.000Z

396

Derivation of quantum probabilities from deterministic evolution  

E-Print Network [OSTI]

The predictions of quantum mechanics are probabilistic. Quantum probabilities are extracted using a postulate of the theory called the Born rule, the status of which is central to the "measurement problem" of quantum mechanics. Efforts to justify the Born rule from other physical principles, and thus elucidate the measurement process, have involved lengthy statistical or information-theoretic arguments. Here we show that Bohm's deterministic formulation of quantum mechanics allows the Born rule for measurements on a single system to be derived, without any statistical assumptions. We solve a simple example where the creation of an ensemble of identical quantum states, together with position measurements on those states, are described by Bohm's quantum dynamics. The calculated measurement outcomes agree with the Born-rule probabilities, which are thus a consequence of deterministic evolution. Our results demonstrate that quantum probabilities can emerge from simple dynamical laws alone, and they support the view that there is no underlying indeterminism in quantum phenomena.

T. G. Philbin

2014-10-15T23:59:59.000Z

397

MODELING X-RAY BINARY EVOLUTION IN NORMAL GALAXIES: INSIGHTS FROM SINGS  

SciTech Connect (OSTI)

We present the largest-scale comparison to date between observed extragalactic X-ray binary (XRB) populations and theoretical models of their production. We construct observational X-ray luminosity functions (oXLFs) using Chandra observations of 12 late-type galaxies from the Spitzer Infrared Nearby Galaxy Survey. For each galaxy, we obtain theoretical XLFs (tXLFs) by combining XRB synthetic models, constructed with the population synthesis code StarTrack, with observational star formation histories (SFHs). We identify highest-likelihood models both for individual galaxies and globally, averaged over the full galaxy sample. Individual tXLFs successfully reproduce about half of the oXLFs, but for some galaxies we are unable to find underlying source populations, indicating that galaxy SFHs and metallicities are not well matched and/or that XRB modeling requires calibration on larger observational samples. Given these limitations, we find that the best models are consistent with a product of common envelope ejection efficiency and central donor concentration {approx_equal} 0.1, and a 50% uniform-50% ''twins'' initial mass-ratio distribution. We present and discuss constituent subpopulations of tXLFs according to donor, accretor, and stellar population characteristics. The galaxy-wide X-ray luminosity due to low-mass and high-mass XRBs, estimated via our best global model tXLF, follows the general trend expected from the L{sub X} -star formation rate and L{sub X} -stellar mass relations of Lehmer et al. Our best models are also in agreement with modeling of the evolution of both XRBs over cosmic time and of the galaxy X-ray luminosity with redshift.

Tzanavaris, P.; Jenkins, L.; Lehmer, B. D.; Hornschemeier, A.; Ptak, A.; Basu-Zych, A. R. [Laboratory for X-ray Astrophysics, NASA/Goddard Space Flight Center, Mail Code 662, Greenbelt, MD 20771 (United States); Fragos, T.; Zezas, A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02139 (United States); Tremmel, M. [Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580 (United States); Kalogera, V. [Center for Interdisciplinary Research and Exploration in Astrophysics and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States)

2013-09-10T23:59:59.000Z

398

Pulsed oxidation and biological evolution in the Ediacaran Doushantuo Formation  

E-Print Network [OSTI]

24061; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy Ediacaran oceans were pervasively oxidized) did evolution of oxygen-requiring taxa reach global distribution changes in the aftermath of widespread and potentially global ice ages, including the evolution

Jiang, Ganqing

399

Workforce-Constrained Preventive Maintenance Scheduling using Evolution Strategies  

E-Print Network [OSTI]

Workforce-Constrained Preventive Maintenance Scheduling using Evolution Strategies ABSTRACT Heavy of minimizing the makespan for a set of preventive maintenance (PM) tasks, requiring single- or multiple approach to the SA approach for this class of PM problems. Subject Area: Preventive Maintenance, Evolution

Terwilliger, Mark

400

Microstructural Evolution and interfacial motion in systems with diffusion barriers  

SciTech Connect (OSTI)

This research program was designed to model and simulate phase transformations in systems containing diffusion barriers. The modeling work included mass flow, phase formation, and microstructural evolution in interdiffusing systems. Simulation work was done by developing Cahn-Hilliard and phase field equations governing both the temporal and spatial evolution of the composition and deformation fields and other important phase variables.

Perry H. Leo

2009-03-05T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

The Combination of Competitive Evolution and an Interactive Environment  

E-Print Network [OSTI]

The Combination of Competitive Evolution and an Interactive Environment Julie Corder and Ross- ronment. We explore the combination of competitive evolution, and an interactive environment. A population, and potential remedies, are discussed. 1 Introduction In studying intelligence, the environment in which

Meeden, Lisa A.

402

Early developmental patterning sets the stage for brain evolution  

E-Print Network [OSTI]

Early developmental patterning sets the stage for brain evolution Hans A. Hofmann1 Section of Texas, Austin, TX 78712 T he evolution of brain structure and function has long fascinated biologists of the brain--or brain region--and body size across a wide range of vertebrates (1). Besides random drift, two

Hofmann, Hans A.

403

ADAGE: A software package for analyzing graph evolution  

E-Print Network [OSTI]

graph evolution. 2.2 Using ADAGE 2.2.1 Installation ADAGE was built for use on MATLAB 2007 version. In this case input is a string. If the MATLAB matrix has already been saved, simply run > input = loadADAGE: A software package for analyzing graph evolution Mary McGlohon, Christos Faloutsos May 2007

404

Wrapper-Based Evolution of Legacy Information Systems  

E-Print Network [OSTI]

Wrapper-Based Evolution of Legacy Information Systems PHILIPPE THIRAN and JEAN-LUC HAINAUT Facult Universit´e Claude Bernard, Lyon System evolution most often implies the integration of legacy components file model versus OO model). In addition, neither the legacy DBMS (too weak to address integrity issues

Houben, Geert-Jan

405

On a local formalism for time evolution of dynamical systems  

E-Print Network [OSTI]

The formalism of local maximization for entropy gradient producing the evolution and dynamical equations for closed systems. It eliminates the inconsistency between the reversibilty of time in dynamical equations and the strict direction of irreversible evolution for complex systems, causality contradictions and ambiguity of time flow in different systems. Independently it leads to basic principles of special relativity.

Drozdov, I V

2015-01-01T23:59:59.000Z

406

Evolution of Biped Locomotion using Linear Genetic Programming  

E-Print Network [OSTI]

of anthropomorphic bipedal loco- motion is addressed by means of artificial evolution using linear genetic model free evolution of bipedal gaits for a system with high number of degrees of freedom. 1, except when the robot is on a steep slope. Legged robots, on the contrary, lift their feet off the ground

Wolff, Krister

407

Opportunistic Evolution: Efficient Evolutionary Computation on Large-Scale  

E-Print Network [OSTI]

, ironically, a hybrid of the island and distributed evaluation models, in combina- tion with either, sarmentrout}@parabon.com ABSTRACT We examine opportunistic evolution, a variation of master- slave distributed implementa- tion of opportunistic evolution may be used in conjunction with either a generational or

George Mason University

408

LONG-TERM SOLAR CYCLE EVOLUTION: REVIEW OF RECENT DEVELOPMENTS  

E-Print Network [OSTI]

LONG-TERM SOLAR CYCLE EVOLUTION: REVIEW OF RECENT DEVELOPMENTS I. G. USOSKIN1 and K. MURSULA2 1 September 2003) Abstract. The sunspot number series forms the longest directly observed index of solar of the recent achievements and findings in long-term evolution of solar activity cycles such as determinism

Usoskin, Ilya G.

409

Structure Evolution of Dynamic Bayesian Network for Traffic Accident Detection  

E-Print Network [OSTI]

Structure Evolution of Dynamic Bayesian Network for Traffic Accident Detection Ju-Won Hwang, Young and the accuracy in a domain of the traffic accident detection. Keywords-structure of dynamic Bayesian network; Bayesian network, evolution I. INTRODUCTION Every year, traffic congestion and traffic accidents have been

Cho, Sung-Bae

410

NLO evolution of 3-quark Wilson loop operator  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

It is well known that high-energy scattering of a meson from some hadronic target can be described by the interaction of that target with a color dipole formed by two Wilson lines corresponding to fast quark-antiquark pair. Moreover, the energy dependence of the scattering amplitude is governed by the evolution equation of this color dipole with respect to rapidity. Similarly, the energy dependence of scattering of a baryon can be described in terms of evolution of a three-Wilson-lines operator with respect to the rapidity of the Wilson lines. We calculate the evolution of the 3-quark Wilson loop operator in the next-to-leading order (NLO) and present a quasi-conformal evolution equation for a composite 3-Wilson-lines operator. We also obtain the linearized version of that evolution equation describing the amplitude of the odderon exchange at high energies.

Balitsky, Ian [ODU, JLAB; Grabovsky, A V [Novosibirsk

2015-01-01T23:59:59.000Z

411

future science group 9ISSN 1759-726910.4155/BFS.11.151 2012 Future Science Ltd Synthetic biology approaches to biofuel production  

E-Print Network [OSTI]

approaches to biofuel production Editorial Biofuels (2012) 3(1), 9­12 "...it is important for synthetic there is a tendency, par- ticularly in the algae biofuel space, to prioritize high yields without sufficient regard large enough volumes of biofuels at a low enough cost to make this significant leap in the national

Hasty, Jeff

412

Probabilistic calibration of a Greenland Ice Sheet model using spatially-resolved synthetic observations: toward projections of ice mass loss with uncertainties  

E-Print Network [OSTI]

1 Probabilistic calibration of a Greenland Ice Sheet model using spatially-resolved synthetic on how well the model reproduces the Greenland Ice Sheet profile. We improve on the previous state et al., 2012). Here, we focus on the Greenland Ice Sheet component of future sea level rise

Haran, Murali

413

An Analysis of Past and Future Changes in the Ice Cover of Two High-Arctic Lakes Based on Synthetic Aperture Radar (SAR) and Landsat Imagery  

E-Print Network [OSTI]

and heat energy between a lake and its surroundings (Adams, 1981). In high-arctic lakes, changes in ice climate data are limited, remote sensing of lake-ice conditions can provide valuable insight into climaticAn Analysis of Past and Future Changes in the Ice Cover of Two High-Arctic Lakes Based on Synthetic

Bradley, Raymond S.

414

Chemistry and Engineering News Volume 90 Issue 7 | February 13, 2012 | pp. 48-49 | F. Albert Cotton Award In Synthetic Inorganic Chemistry  

E-Print Network [OSTI]

Chemistry and Engineering News Volume 90 Issue 7 | February 13, 2012 | pp. 48-49 | Awards F. Albert Cotton Award In Synthetic Inorganic Chemistry By Sophie Rovner Department: ACS News Keywords: inorganic chemistry, Christopher Reed Awards Reed Credit: Courtesy of Christopher A. Reed Sponsored by the F. Albert

Reed, Christopher A.

415

Synthetic Studies of Iriomoteolide-1A Total Synthesis of Alotaketal A and an Antifungal O-Hydroxy-P-Quinone Methide Diterpenoid  

E-Print Network [OSTI]

nuclear PKA signaling in living cells. Our synthetic efforts toward the unnamed quinone methide diterpenoid 1.67 led to the first total synthesis of this potent antifungal product (MIC = 0.19 µM). Our total synthesis was highlighted by a Stille coupling...

Huang, Jinhua

2013-11-07T23:59:59.000Z

416

Development of a high-frame-rate high-resolution particle image velocimetry system and applications to the characterization of synthetic jet actuators  

E-Print Network [OSTI]

to 3,000 frames per second and a maximum image resolution of 512 by 512 pixels. The performance of these systems was demonstrated by utilizing them to experimentally characterize the flowfield generated by a synthetic jet actuator, operating at a...

Gilarranz, Jose Luis

1998-01-01T23:59:59.000Z

417

Cenozoic Landscape Evolution of the Grand Canyon Region, Arizona  

E-Print Network [OSTI]

in the eastern Grand Canyon by John Lee, Alec Waggoner, and Eugene Symanzski in October, 2005. Mineral separation and sample analysis was done by John Lee at the University of Kansas. Investigation utilizes thermokinetic modeling of synthetically produced 3... of the Colorado River through modern topographic highs. 2.3 Approach and Methodology 2.3.1 Isotherm Deflection The effects of topographic cooling in areas with high-amplitude, long-wavelength topography has been shown to significantly perturb the geometries...

Lee, John

2008-02-26T23:59:59.000Z

418

Coupled Geomechanical Simulations of UCG Cavity Evolution  

SciTech Connect (OSTI)

This paper presents recent work from an ongoing project to develop predictive tools for cavity/combustion-zone growth and to gain quantitative understanding of the processes and conditions (both natural and engineered) affecting underground coal gasification (UCG). In this paper we will focus upon the development of coupled geomechanical capabilities for simulating the evolution of the UCG cavity using discrete element methodologies. The Discrete Element Method (DEM) has unique advantages for facilitating the prediction of the mechanical response of fractured rock masses, such as cleated coal seams. In contrast with continuum approaches, the interfaces within the coal can be explicitly included and combinations of both elastic and plastic anisotropic response are simulated directly. Additionally, the DEM facilitates estimation of changes in hydraulic properties by providing estimates of changes in cleat aperture. Simulation of cavity evolution involves a range of coupled processes and the mechanical response of the host coal and adjoining rockmass plays a role in every stage of UCG operations. For example, cavity collapse during the burn has significant effect upon the rate of the burn itself. In the vicinity of the cavity, collapse and fracturing may result in enhanced hydraulic conductivity of the rock matrix in the coal and caprock above the burn chamber. Even far from the cavity, stresses due to subsidence may be sufficient to induce new fractures linking previously isolated aquifers. These mechanical processes are key in understanding the risk of unacceptable subsidence and the potential for groundwater contamination. These mechanical processes are inherently non-linear, involving significant inelastic response, especially in the region closest to the cavity. In addition, the response of the rock mass involves both continuum and discrete mechanical behavior. We have recently coupled the LDEC (Livermore Distinct Element Code) and NUFT (Non-isothermal Unsaturated Flow and Transport) codes to investigate the interaction between combustion, water influx and mechanical response. The modifications to NUFT are described in detail in a companion paper. This paper considers the extension of the LDEC code and the application of the coupled tool to the simulation of cavity growth and collapse. The distinct element technology incorporated into LDEC is ideally suited to simulation of the progressive failure of the cleated coal mass by permitting the simulation of individual planes of weakness. We will present details of the coupling approach and then demonstrate the capability through simulation of several test cases.

Morris, J P; Buscheck, T A; Hao, Y

2009-07-13T23:59:59.000Z

419

Accelerated Gene Evolution and Subfunctionalization in the Pseudotetraploid Frog Xenopus Laevis  

E-Print Network [OSTI]

Accelerated gene evolution and subfunctionalization in thethese triplets reveals accelerated evolution or relaxationbeen proposed to exhibit accelerated [31] or slowed [32

Hellsten, Uffe; Khokha, Mustafa K.; Grammar, Timothy C.; Harland, Richard M.; Richardson, Paul; Rokhsar, Daniel S.

2007-01-01T23:59:59.000Z

420

Constraints on the Structure, Evolution, and Approach to Thermonuclear Runaway in Intermediate Mass and Massive Stars.  

E-Print Network [OSTI]

??This thesis provides an assessment of stellar evolution models for intermediate-mass and massive stars in advanced stages of evolution through a detailed cooperation between simulations… (more)

Dolan, Michelle Marie

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Stellar and dynamical evolution within triple systems  

E-Print Network [OSTI]

About 5-15% of stellar systems are at least triple. About 1% of systems with a primary of $\\tgs 1 \\Mscun$ are triple with a {\\it longer} peri od that is less than 30y, and so may in principle be capable of Roche-lobe overflow in both the inner and the outer orbits, at different times. We discuss possible evolutionary paths for these systems, some of which may lead to objects that are difficult to understand in the context of purely binary evolution. An example is OW Gem, a binary containing two supergiants (spectral types F and G) with masses that difffer by a factor of 1.5. There is also a triple-star pathway which could lead rather naturally to low-mass X-ray binaries; whereas binary pathways often appear rather contrived. We also discuss some dynamical pr ocesses involved in the 3-body problem. A number of triple stars are found in clusters. Similar systems can be created by gravitational capture during N-body simulations of Galactic clusters, especially if there is a n assumed primordial binary population. We discuss the properties of these triples , and note that many can be quite long-lived.

P. P. Eggleton; L. G. Kiseleva

1995-10-20T23:59:59.000Z

422

AGES: THE AGN AND GALAXY EVOLUTION SURVEY  

SciTech Connect (OSTI)

The AGN and Galaxy Evolution Survey (AGES) is a redshift survey covering, in its standard fields, 7.7 deg{sup 2} of the Booetes field of the NOAO Deep Wide-Field Survey. The final sample consists of 23,745 redshifts. There are well-defined galaxy samples in 10 bands (the B{sub W} , R, I, J, K, IRAC 3.6, 4.5, 5.8, and 8.0 {mu}m, and MIPS 24 {mu}m bands) to a limiting magnitude of I < 20 mag for spectroscopy. For these galaxies, we obtained 18,163 redshifts from a sample of 35,200 galaxies, where random sparse sampling was used to define statistically complete sub-samples in all 10 photometric bands. The median galaxy redshift is 0.31, and 90% of the redshifts are in the range 0.085 < z < 0.66. Active galactic nuclei (AGNs) were selected as radio, X-ray, IRAC mid-IR, and MIPS 24 {mu}m sources to fainter limiting magnitudes (I < 22.5 mag for point sources). Redshifts were obtained for 4764 quasars and galaxies with AGN signatures, with 2926, 1718, 605, 119, and 13 above redshifts of 0.5, 1, 2, 3, and 4, respectively. We detail all the AGES selection procedures and present the complete spectroscopic redshift catalogs and spectral energy distribution decompositions. Photometric redshift estimates are provided for all sources in the AGES samples.

Kochanek, C. S. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Eisenstein, D. J.; Caldwell, N.; Jones, C.; Murray, S. S.; Forman, W. R.; Green, P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Cool, R. J. [Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544 (United States); Assef, R. J.; Eisenhardt, P.; Stern, D. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Jannuzi, B. T.; Dey, A. [NOAO, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Brown, M. J. I. [School of Physics, Monash University, Clayton, Victoria 3800 (Australia); Gonzalez, A. H. [Department of Astronomy, Bryant Space Science Center, University of Florida, Gainesville, FL 32611 (United States)

2012-05-01T23:59:59.000Z

423

Linear non-autonomous Cauchy problems and evolution semigroups  

E-Print Network [OSTI]

The paper is devoted to the problem of existence of propagators for an abstract linear non-autonomous evolution Cauchy problem of hyperbolic type in separable Banach spaces. The problem is solved using the so-called evolution semigroup approach which reduces the existence problem for propagators to a perturbation problem of semigroup generators. The results are specified to abstract linear non-autonomous evolution equations in Hilbert spaces where the assumption is made that the domains of the quadratic forms associated with the generators are independent of time. Finally, these results are applied to time-dependent Schr\\"odinger operators with moving point interactions in 1D.

Hagen Neidhardt; Valentin A. Zagrebnov

2007-11-02T23:59:59.000Z

424

A Unified Differential Evolution Algorithm for Global Optimization  

SciTech Connect (OSTI)

Abstract?In this paper, we propose a new unified differential evolution (uDE) algorithm for single objective global optimization. Instead of selecting among multiple mutation strategies as in the conventional differential evolution algorithm, this algorithm employs a single equation as the mutation strategy. It has the virtue of mathematical simplicity and also provides users the flexbility for broader exploration of different mutation strategies. Numerical tests using twelve basic unimodal and multimodal functions show promising performance of the proposed algorithm in comparison to convential differential evolution algorithms.

Qiang, Ji; Mitchell, Chad

2014-06-24T23:59:59.000Z

425

A novel synthetic analog of militarin, MA-1 induces mitochondrial dependent apoptosis by ROS generation in human lung cancer cells  

SciTech Connect (OSTI)

A synthetic Militarin analog-1[(2R,3R,4R,5R)-1,6-bis(4-(2,4,4-trimethylpentan-2-yl)phenoxy) hexane-2,3,4,5-tetraol] is a novel derivative of constituents from Cordyceps militaris, which has been used to treat a variety of chronic diseases including inflammation, diabetes, hyperglycemia and cancers. Here, we report for the first time the synthesis of Militarin analog-1 (MA-1) and the apoptotic mechanism of MA-1 against human lung cancer cell lines. Treatment with MA-1 significantly inhibited the viability of 3 human lung cancer cell lines. The inhibition of viability and growth in MA-1-treated A549 cells with an IC{sub 50} of 5 ?M were mediated through apoptosis induction, as demonstrated by an increase in DNA fragmentation, sub-G{sub 0}/G{sub 1}-DNA fraction, nuclear condensation, and phosphatidylserine exposure. The apoptotic cell death caused mitochondrial membrane permeabilization through regulation of expression of the Bcl-2 family proteins, leading to cytochrome c release in a time-dependent manner. Subsequently, the final stage of apoptosis, activation of caspase-9/-3 and cleavage of poly (ADP ribose) polymerase, was induced. Furthermore, A549 lung cancer cells were more responsive to MA-1 than a bronchial epithelial cell line (BEAS-2B), involving the rapid generation of reactive oxygen species (ROS), c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK) activation. The pharmacological inhibition of ROS generation and JNK/p38 MAPK exhibited attenuated DNA fragmentation in MA-1-induced apoptosis. Oral administration of MA-1 also retarded growth of A549 orthotopic xenografts. In conclusion, the present study indicates that the new synthetic derivative MA-1 triggers mitochondrial apoptosis through ROS generation and regulation of MAPKs and may be a potent therapeutic agent against human lung cancer. - Highlights: • We report a novel synthesized derivative, militarin analog-1 (MA-1). • MA-1-induced cancer cell death was triggered by the ROS generation through MAPKs. • The MA-1-induced cell death was also modulated by the mitochondria-mediated pathway. • The apoptotic cancer cell death by MA-1 was also exhibited in orthotopic xenografts. • Our findings suggest MA-1 as a clinically useful agent for human lung cancer.

Yoon, Deok Hyo; Lim, Mi-Hee [Department of Biochemistry, Kangwon National University, Chuncheon 200-701 (Korea, Republic of); Lee, Yu Ran [Department of Physiology, School of Medicine, Chungnam National University, Daejeon 301-747 (Korea, Republic of); Sung, Gi-Ho [Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Suwon 404-707 (Korea, Republic of); Lee, Tae-Ho [R and D Center, Dong-A Pharmaceutical Co, Ltd, Yongin 446-905 (Korea, Republic of); Jeon, Byeong Hwa [Department of Physiology, School of Medicine, Chungnam National University, Daejeon 301-747 (Korea, Republic of); Cho, Jae Youl [Department of Genetic Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Song, Won O. [Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824 (United States); Park, Haeil [College of Pharmacy, Kangwon National University, Chuncheon 200-701 (Korea, Republic of); Choi, Sunga, E-mail: sachoi@cnu.ac.kr [Department of Physiology, School of Medicine, Chungnam National University, Daejeon 301-747 (Korea, Republic of); Kim, Tae Woong, E-mail: tawkim@kangwon.ac.kr [Department of Biochemistry, Kangwon National University, Chuncheon 200-701 (Korea, Republic of)

2013-12-15T23:59:59.000Z

426

Internal Geology and Evolution of the Redondo Dome, Valles Caldera...  

Open Energy Info (EERE)

Geology and Evolution of the Redondo Dome, Valles Caldera, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Internal Geology and...

427

Geophysical evolution of planetary interiors and surfaces : Moon & Mars  

E-Print Network [OSTI]

The interiors and surfaces of the terrestrial planetary bodies provide us a unique opportunity to gain insight into planetary evolution, particularly in the early stages subsequent to accretion. Both Mars and the Moon are ...

Evans, Alexander Joseph

2013-01-01T23:59:59.000Z

428

Nanosciences : evolution or revolution ? Jean-Louis Pautrat  

E-Print Network [OSTI]

1 Nanosciences : evolution or revolution ? Jean-Louis Pautrat Physicist, former Director of Foundation "Nanosciences aux limites de la nanoélectronique" 23 rue des Martyrs, 38000 Grenoble Abstract

Paris-Sud XI, Université de

429

Analytic Evolution of Singular Distribution Amplitudes in QCD  

SciTech Connect (OSTI)

We describe a method of analytic evolution of distribution amplitudes (DA) that have singularities, such as non-zero values at the end-points of the support region, jumps at some points inside the support region and cusps. We illustrate the method by applying it to the evolution of a flat (constant) DA, anti-symmetric at DA and then use it for evolution of the two-photon generalized distribution amplitude. Our approach has advantages over the standard method of expansion in Gegenbauer polynomials, which requires infinite number of terms in order to accurately reproduce functions in the vicinity of singular points, and over a straightforward iteration of an initial distribution with evolution kernel. The latter produces logarithmically divergent terms at each iteration, while in our method the logarithmic singularities are summed from the start, which immediately produces a continuous curve, with only one or two iterations needed afterwards in order to get rather precise results.

Radyushkin, Anatoly V. [Old Dominion University, Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Tandogan Kunkel, Asli [Old Dominion University, Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

2014-03-01T23:59:59.000Z

430

The evolution of mRNA splicing in mammals  

E-Print Network [OSTI]

In this thesis, I describe investigations into the evolution of splicing in mammals. I first investigate a small class of alternative splicing events, tandem splice sites, and show how they are used to introduce and remove ...

Merkin, Jason Jay

2014-01-01T23:59:59.000Z

431

Thermodynamics of microstructure evolution: grain growth Victor L. Berdichevsky  

E-Print Network [OSTI]

Thermodynamics of microstructure evolution: grain growth Victor L. Berdichevsky Mechanical thermodynamic parameters, entropy of microstructure and temperature of microstruc- ture. It was claimed that there is "one more law of thermodynamics": entropy of microstructure must decay in isolated thermodynamic stable

Berdichevsky, Victor

432

The evolution of the Greek theater into the Roman theater  

E-Print Network [OSTI]

Into the Roman Theater. (April 2001) Mare Ryan Zak Department of Landscape Architecture Texas A&M University Fellows Advisor: Dr. Thomas Woodfin Department of Landscape Architecture This research is a study of the Roman theater and its evolution from...

Zak, Marc Ryan

2013-02-22T23:59:59.000Z

433

Evolution of the financial services industry in Europe and US  

E-Print Network [OSTI]

The thesis aims to address the long lasting phenomena of evolution of financial services industry both in US and Europe. The topic has never been more emphasized since the Great Depression. The dramatic fact of cost cutting ...

Boyar, Pinar

2009-01-01T23:59:59.000Z

434

Beneath the Surface of Giant Planets: Evolution, Structure, and Composition  

E-Print Network [OSTI]

thermal evolution model, including energy-limited mass loss,Evaporative Mass Loss Model For energy-limited evaporativeradii. Using an energy-limited escape model, we estimate a

Kelly Miller, Neil L.

2013-01-01T23:59:59.000Z

435

The Evolution of a Modular Software Network Miguel A. Fortuna  

E-Print Network [OSTI]

The Evolution of a Modular Software Network Miguel A. Fortuna , Juan A. Bonachela, and Simon A the website of this journal as a zip folder. To whom correspondence should be addressed. E-mail: fortuna

Fortuna, Miguel A.

436

Project Profile: Helios: Understanding Solar Evolution through Text Analytics  

Broader source: Energy.gov [DOE]

SRI International, under the Solar Energy Evolution and Diffusion Studies (SEEDS) program, is developing a new system for large-scale text analytics, called Helios, to isolate and map recurring...

437

Big Data Projects on Solar Tech Evolution and Diffusion  

Broader source: Energy.gov [DOE]

This is the meeting agenda from the Big Data Projects on Solar Technology Evolution and Diffusion kickoff meeting, held on July 15, 2013 in Arlington, VA and facilitated by the SunShot Initiative.

438

Health, Education, and the Postretirement Evolution of Household Assets  

E-Print Network [OSTI]

We explore the relationship between education and the evolution of wealth after retirement. Asset growth following retirement depends in part on health capital and financial capital accumulated prior to retirement, which ...

Venti, Steven

439

Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. This project will provide the first ever formal evaluation of fracture and fracture flow evolution in an EGS reservoir following a hydraulic stimulation.

440

Developmental plasticity and the evolution of parental effects  

E-Print Network [OSTI]

Developmental plasticity and the evolution of parental effects Tobias Uller Edward Grey Institute for evolutionary biologists is to understand how developmental plasticity can influence the evolutionary process. Devel- opmental plasticity frequently involves parental effects, which might enable adaptive and context

Richner, Heinz

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

angle distribution evolution: Topics by E-print Network  

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

(arXiv) Summary: We investigate the cosmological evolution of GRBs, using the total gamma ray fluence as a measure of the burst strength. This involves an understanding of the...

442

Ecology, Evolution and Behavior Seminar Series Spring Semester 2013  

E-Print Network [OSTI]

Ecology, Evolution and Behavior Seminar Series Spring Semester 2013 All Hilu February 28 Robert Cox University of Virginia The ecology and physiology Christine May James Madison Unv. Disturbance ecology: linking stream communities

Virginia Tech

443

MICROSTRUCTURE EVOLUTION MODELING FOR SOLUTION TREATMENT OF ALUMINUM ALLOYS  

SciTech Connect (OSTI)

The microstructure evolution during solution treatment plays an important role in mechanical properties of heat-treated aluminum alloys. In this paper, models were reviewed that can predict the microstructure evolution during the solutionizing process of the aging heat treatment of aluminum alloys. The dissolution of Mg2Si particles has been modeled as a diffusion process of Mg in the -Al matrix. The evolution of volumetric fraction of fragmented silicon as a function of time and temperature was also considered. The growth and coarsening of silicon particles during the heat treatment was considered. It was found that constitutive equations and required property data for most of the phenomena that need to be considered are available. Several model parameters that need to be obtained from material characterization were identified. Pending the availability of these model parameters, this comprehensive model can be used to describe the microstructure evolution of aluminum alloys in order to optimize the solutionizing heat treatment for energy savings.

Yin, Hebi [ORNL; Sabau, Adrian S [ORNL; Skszek, Timothy [Vehma International of American, Inc.; Niu, X [Magna Cosma International, Promatek Research Centre

2013-01-01T23:59:59.000Z

444

Evolution of an initially turbulent stratified shear layer  

E-Print Network [OSTI]

Afanasyev and W. R. Peltier, “The three-dimensionalizationP. Klaassen and W. R. Peltier, “Evolution of ?nite amplitudeG. P. Klaassen and W. R. Peltier, “The in?uence of strati?

Brucker, Kyle A.; Sarkar, Sutanu

2007-01-01T23:59:59.000Z

445

Predictions of undirectional irregular wave kinematics and evolution  

E-Print Network [OSTI]

Although irregular ocean waves can be viewed as the summation of many wave components with different frequencies, accurate prediction of elevation evolution and kinematics is difficult due to the existence of nonlinear interactions among the wave...

Ye, Mao

1994-01-01T23:59:59.000Z

446

Tidal heating and tidal evolution in the solar system  

E-Print Network [OSTI]

In this thesis, we examine the effects of tidal dissipation on solid bodies in application and in theory. First, we study the effects of tidal heating and tidal evolution in the Saturnian satellite system. We constrain the ...

Meyer, Jennifer Ann

2011-01-01T23:59:59.000Z

447

The Galactic thick and thin disks: differences in evolution  

E-Print Network [OSTI]

Recent observations demonstrate that the thin and thick disks of the Galaxy have different chemical abundance trends and evolution timescales. The relative abundances of $\\alpha$-elements in the thick Galactic disk are increased relative to the thin disk. Our goal is to investigate the cause of such differences in thick and thin disk abundances. We investigate the chemical evolution of the Galactic disk in the framework of the open two-zone model with gas inflow. The Galactic abundance trends for $\\alpha$-elements (Mg, Si, O) and Fe are predicted for the thin and thick Galactic disks. The star formation histories of the thin and thick disks must have been different and the gas infall must have been more intense during the thick disk evolution that the thin disk evolution.

T. V. Nykytyuk; T. V. Mishenina

2006-05-26T23:59:59.000Z

448

Life cycle evolution and systematics of Campanulariid hydrozoans  

E-Print Network [OSTI]

The purpose of this thesis is to study campanulariid life cycle evolution and systematics. The Campanulariidae is a hydrozoan family with many life cycle variations, and provide an excellent model system to study life cycle ...

Govindarajan, Annette Frese, 1970-

2004-01-01T23:59:59.000Z

449

Hypervelocity impacts and the evolution of planetary surfaces and interiors  

E-Print Network [OSTI]

The thesis consists of five studies relating impact processes to the evolution of planetary interiors as well as impact structures on planetary surfaces. Chapter 2 is concerned with developing methods for estimating the ...

Watters, Wesley Andrés, 1976-

2009-01-01T23:59:59.000Z

450

Constraining Cosmic Evolution of Type Ia Supernovae  

SciTech Connect (OSTI)

We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSENCE project, we have obtained 107 spectra of 88 high-redshift SNe Ia with excellent light-curve information. In addition, we have obtained 397 spectra of low-redshift SNe through a multiple-decade effort at Lick and Keck Observatories, and we have used 45 ultraviolet spectra obtained by HST/IUE. The low-redshift spectra act as a control sample when comparing to the ESSENCE spectra. In all instances, the ESSENCE and Lick composite spectra appear very similar. The addition of galaxy light to the Lick composite spectra allows a nearly perfect match of the overall spectral-energy distribution with the ESSENCE composite spectra, indicating that the high-redshift SNe are more contaminated with host-galaxy light than their low-redshift counterparts. This is caused by observing objects at all redshifts with similar slit widths, which corresponds to different projected distances. After correcting for the galaxy-light contamination, subtle differences in the spectra remain. We have estimated the systematic errors when using current spectral templates for K-corrections to be {approx}0.02 mag. The variance in the composite spectra give an estimate of the intrinsic variance in low-redshift maximum-light SN spectra of {approx}3% in the optical and growing toward the ultraviolet. The difference between the maximum-light low and high-redshift spectra constrain SN evolution between our samples to be < 10% in the rest-frame optical.

Foley, Ryan J.; Filippenko, Alexei V.; Aguilera, C.; Becker, A.C.; Blondin, S.; Challis, P.; Clocchiatti, A.; Covarrubias, R.; Davis, T.M.; Garnavich, P.M.; Jha, S.; Kirshner, R.P.; Krisciunas, K.; Leibundgut, B.; Li, W.; Matheson, T.; Miceli, A.; Miknaitis, G.; Pignata, G.; Rest, A.; Riess, A.G.; /UC, Berkeley, Astron. Dept. /Cerro-Tololo InterAmerican Obs. /Washington U., Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /Bohr Inst. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern Observ. /NOAO, Tucson /Fermilab /Chile U., Santiago /Harvard U., Phys. Dept. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Stockholm U. /Hawaii U. /Illinois U., Urbana, Astron. Dept.

2008-02-13T23:59:59.000Z

451

Microstructural Evolution Based on Fundamental Interfacial Properties  

SciTech Connect (OSTI)

This first CMSN project has been operating since the summer of 1999. The main achievement of the project was to bring together a community of materials scientists, physicists and mathematicians who share a common interest in the properties of interfaces and the impact of those properties on microstructural evolution. Six full workshops were held at Carnegie Mellon (CMU), Northwestern (NWU), Santa Fe, Northeastern University (NEU), National Institute for Standards and Technology (NIST), Ames Laboratory, and at the University of California in San Diego (UCSD) respectively. Substantial scientific results were obtained through the sustained contact between the members of the project. A recent issue of Interface Science (volume 10, issue 2/3, July 2002) was dedicated to the output of the project. The results include: the development of methods for extracting anisotropic boundary energy and mobility from molecular dynamics simulations of solid/liquid interfaces in nickel; the extraction of anisotropic energies and mobilities in aluminum from similar MD simulations; the application of parallel computation to the calculation of interfacial properties; the development of a method to extract interfacial properties from the fluctuations in interface position through consideration of interfacial stiffness; the use of anisotropic interface properties in studies of abnormal grain growth; the discovery of abnormal grain growth from random distributions of orientation in subgrain networks; the direct comparison at the scale of individual grains between experimentally observed grain growth and simulations, which confirmed the importance of including anisotropic interfacial properties in the simulations; the classification of a rich variety of dendritic morphologies based on slight variations in the anisotropy of the solid-liquid interface; development of phase field methods that permit both solidification and grain growth to be simulated within the same framework.

A. D. Rollett; D. J. Srolovitz; A. Karma

2003-07-11T23:59:59.000Z

452

Evolution of Migrating Planets Undergoing Gas Accretion  

E-Print Network [OSTI]

We analyze the orbital and mass evolution of planets that undergo run-away gas accretion by means of 2D and 3D hydrodynamic simulations. The disk torque distribution per unit disk mass as a function of radius provides an important diagnostic for the nature of the disk-planet interactions. We first consider torque distributions for nonmigrating planets of fixed mass and show that there is general agreement with the expectations of resonance theory. We then present results of simulations for mass-gaining, migrating planets. For planets with an initial mass of 5 Earth masses, which are embedded in disks with standard parameters and which undergo run-away gas accretion to one Jupiter mass (Mjup), the torque distributions per unit disk mass are largely unaffected by migration and accretion for a given planet mass. The migration rates for these planets are in agreement with the predictions of the standard theory for planet migration (Type I and Type II migration). The planet mass growth occurs through gas capture within the planet's Bondi radius at lower planet masses, the Hill radius at intermediate planet masses, and through reduced accretion at higher planet masses due to gap formation. During run-away mass growth, a planet migrates inwards by only about 20% in radius before achieving a mass of ~1 Mjup. For the above models, we find no evidence of fast migration driven by coorbital torques, known as Type III migration. We do find evidence of Type III migration for a fixed mass planet of Saturn's mass that is immersed in a cold and massive disk. In this case the planet migration is assumed to begin before gap formation completes. The migration is understood through a model in which the torque is due to an asymmetry in density between trapped gas on the leading side of the planet and ambient gas on the trailing side of the planet.

Gennaro D'Angelo; Stephen H. Lubow

2008-06-11T23:59:59.000Z

453

CHEMICAL EVOLUTION OF THE LARGE MAGELLANIC CLOUD  

SciTech Connect (OSTI)

We adopt a new chemical evolution model for the Large Magellanic Cloud (LMC) and thereby investigate its past star formation and chemical enrichment histories. The delay time distribution of Type Ia supernovae recently revealed by Type Ia supernova surveys is incorporated self-consistently into the new model. The principle results are summarized as follows. The present gas mass fraction and stellar metallicity as well as the higher [Ba/Fe] in metal-poor stars at [Fe/H] < -1.5 can be more self-consistently explained by models with steeper initial mass functions. The observed higher [Mg/Fe] ({>=}0.3) at [Fe/H] {approx} -0.6 and higher [Ba/Fe] (>0.5) at [Fe/H] {approx} -0.3 could be due to significantly enhanced star formation about 2 Gyr ago. The observed overall [Ca/Fe]-[Fe/H] relation and remarkably low [Ca/Fe] (< - 0.2) at [Fe/H] > -0.6 are consistent with models with short-delay supernova Ia and with the more efficient loss of Ca possibly caused by an explosion mechanism of Type II supernovae. Although the metallicity distribution functions do not show double peaks in the models with a starburst about 2 Gyr ago, they show characteristic double peaks in the models with double starbursts {approx}200 Myr and {approx}2 Gyr ago. The observed apparent dip of [Fe/H] around {approx}1.5 Gyr ago in the age-metallicity relation can be reproduced by models in which a large amount ({approx}10{sup 9} M{sub Sun }) of metal-poor ([Fe/H] < -1) gas can be accreted onto the LMC.

Bekki, Kenji [ICRAR, M468, University of Western Australia, 35 Stirling Highway, Crawley Western Australia 6009 (Australia); Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan)

2012-12-20T23:59:59.000Z

454

Diffusion Synthetic Acceleration for High-Order Discontinuous Finite Element SN Transport Schemes and Application to Locally Refined Unstructured Meshes  

SciTech Connect (OSTI)

Diffusion synthetic acceleration (DSA) schemes compatible with adaptive mesh refinement (AMR) grids are derived for the SN transport equations discretized using high-order discontinuous finite elements. These schemes are directly obtained from the discretized transport equations by assuming a linear dependence in angle of the angular flux along with an exact Fick's law and, therefore, are categorized as partially consistent. These schemes are akin to the symmetric interior penalty technique applied to elliptic problems and are all based on a second-order discontinuous finite element discretization of a diffusion equation (as opposed to a mixed or P1 formulation). Therefore, they only have the scalar flux as unknowns. A Fourier analysis has been carried out to determine the convergence properties of the three proposed DSA schemes for various cell optical thicknesses and aspect ratios. Out of the three DSA schemes derived, the modified interior penalty (MIP) scheme is stable and effective for realistic problems, even with distorted elements, but loses effectiveness for some highly heterogeneous configurations. The MIP scheme is also symmetric positive definite and can be solved efficiently with a preconditioned conjugate gradient method. Its implementation in an AMR SN transport code has been performed for both source iteration and GMRes-based transport solves, with polynomial orders up to 4. Numerical results are provided and show good agreement with the Fourier analysis results. Results on AMR grids demonstrate that the cost of DSA can be kept low on locally refined meshes.

Yaqi Wang; Jean C. Ragusa

2011-10-01T23:59:59.000Z

455

Effects of Synthetic Amphiphilic alpha-Helical Peptides on the Electrochemical and Structural Properties of Supported Hybrid Bilayers on Gold  

SciTech Connect (OSTI)

Amphiphilic {alpha}-helices were formed from designed synthetic peptides comprising alanine, phenylalanine, and lysine residues. The insertion of the -helical peptides into hybrid bilayers assembled on gold was studied by a variety of methods to assess the resulting structural characteristics, such as electrical resistance and molecular orientation. Self-assembled monolayers (SAMs) of dodecanethiol (DDT); octadecanethiol (ODT); and 1,2-dipalmitoyl-sn-glycero-3-phosphothioethanol (DPPTE) were formed on gold substrates with and without incorporated peptide. Supported hybrid bilayers and multilayers of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) were formed on SAMs by the 'paint-freeze' method of bilayer formation. Modeling of electrochemical impedance spectroscopy data using equivalent electrochemical circuits revealed that the addition of peptide decreased dramatically the resistive element of the bilayer films while maintaining the value of the capacitive element, indicating successful incorporation of peptide into a well-formed bilayer. Near-edge X-ray absorption fine structure spectroscopy data provided evidence that the molecules in the SAMs and hybrid multilayers were ordered even in the presence of peptide. The peptide insertion into the SAM was confirmed by observing the {pi}* resonance peak correlating with phenylalanine and a peak in the nitrogen K-edge regime attributable to the peptide bond.

Smith,M.; Tong, J.; Genzer, J.; Fischer, D.; Kilpatrick, P.

2006-01-01T23:59:59.000Z

456

Three-dimensional subsurface imaging synthetic aperture radar (3D SISAR). Final report, September 22, 1993--September 22, 1996  

SciTech Connect (OSTI)

The concept developed under this applied research and development contract is a novel Ground Penetrating Radar system capable of remotely detecting, analyzing, and mapping buried waste containers from a mobile platform. From the testing and analysis performed to date, the 3-D SISAR has achieved the detection, accurate location, and three-dimensional imaging of buried test objects from a stand-off geometry. Tests have demonstrated that underground objects have been located to within 0.1 meter of their actual position. This work validates that the key elements of the approach are performing as anticipated. The stand-off synthetic aperture radar (SAR) methodology has been demonstrated to be a feasible approach as a remote sensing technique. The radar sensor constructed under this project is providing adequate quality data for imaging, and the matched filters have been demonstrated to provide enhanced target detection. Additional work is on-going in the area of underground propagation and scattering phenomena to provide enhanced depth performance, as the current imaging results have been limited to a few feet of depth underground.

NONE

1998-12-31T23:59:59.000Z

457

Design and implementation of a Synthetic Aperture Radar for Open Skies (SAROS) aboard a C-135 aircraft  

SciTech Connect (OSTI)

NATO and former Warsaw Pact nations have agreed to allow overflights of their countries in the interest of easing world tension. The United States has decided to implement two C-135 aircraft with a Synthetic Aperture Radar (SAR) that has a 3-meter resolution. This work is being sponsored by the Defense Nuclear Agency (DNA) and will be operational in Fall 1995. Since the SAR equipment must be exportable to foreign nations, a 20-year-old UPD-8 analog SAR system was selected as the front-end and refurbished for this application by Loral Defense Systems. Data processing is being upgraded to a currently exportable digital design by Sandia National Laboratories. Amplitude and phase histories will be collected during these overflights and digitized on VHS cassettes. Ground stations will use reduction algorithms to process the data and convert it to magnitude-detected images for member nations. System Planning Corporation is presently developing a portable ground station for use on the demonstration flights. Aircraft integration into the C-135 aircraft is being done by the Air Force at Wright-Patterson AFB, Ohio.

Cooper, D.W.; Murphy, M. [Sandia National Labs., Albuquerque, NM (United States); Rimmel, G. [Loral Defense Systems, Litchfield, AZ (United States)

1994-08-01T23:59:59.000Z

458

LDRD final report on "fundamentals of synthetic conversion of CO2 to simple hydrocarbon fuels" (LDRD 113486).  

SciTech Connect (OSTI)

Energy production is inextricably linked to national security and poses the danger of altering the environment in potentially catastrophic ways. There is no greater problem than sustainable energy production. Our purpose was to attack this problem by examining processes, technology, and science needed for recycling CO{sub 2} back into transportation fuels. This approach can be thought of as 'bio-inspired' as nature employs the same basic inputs, CO{sub 2}/energy/water, to produce biomass. We addressed two key deficiencies apparent in current efforts. First, a detailed process analysis comparing the potential for chemical and conventional engineering methods to provide a route for the conversion of CO{sub 2} and water to fuel has been completed. No apparent 'showstoppers' are apparent in the synthetic route. Opportunities to improve current processes have also been identified and examined. Second, we have also specifically addressed the fundamental science of the direct production of methanol from CO{sub 2} using H{sub 2} as a reductant.

Maravelias, Christos T. (University of Wisconsin, Madison, WI); Kemp, Richard Alan; Mavrikakis, Manos (University of Wisconsin, Madison, WI); Miller, James Edward; Stewart, Constantine A.

2009-11-01T23:59:59.000Z

459

OBJECT KINETIC MONTE CARLO SIMULATIONS OF MICROSTRUCTURE EVOLUTION  

SciTech Connect (OSTI)

The objective is to report the development of the flexible object kinetic Monte Carlo (OKMC) simulation code KSOME (kinetic simulation of microstructure evolution) which can be used to simulate microstructure evolution of complex systems under irradiation. In this report we briefly describe the capabilities of KSOME and present preliminary results for short term annealing of single cascades in tungsten at various primary-knock-on atom (PKA) energies and temperatures.

Nandipati, Giridhar; Setyawan, Wahyu; Heinisch, Howard L.; Roche, Kenneth J.; Kurtz, Richard J.; Wirth, Brian D.

2013-09-30T23:59:59.000Z

460

The evolution of infanticide by males in mammalian societies  

E-Print Network [OSTI]

across mammals Male infanticide has been reported for about half of all species in our sample (open circles) and seems to have evolved independently multiple times. It mostly occurs in social (dark grey branches), less in solitary (light grey branches... : cran.uvigo.es/web/packages/MCMCglmm/vignettes/Tutorial.pdf (2010). 44. M. Pagel, Inferring the historical patterns of biological evolution, Nature 401, 877–884 (1999). 45. M. Pagel, A. Meade, Bayesian analysis of correlated evolution of discrete...

Lukas, Dieter; Huchard, Elise

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biosensor-guided synthetic evolution" 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

Toward a theory of the evolution of business ecosystems : enterprise architectures, competitive dynamics, firm performance & industrial co-evolution  

E-Print Network [OSTI]

This dissertation contributes toward the building of a theory of the evolution of business ecosystems. In the process, it addresses a question that has been posed by evolutionary theorists in the economics and sociology ...

Piepenbrock, Theodore F. (Theodore Frederick), 1965-

2009-01-01T23:59:59.000Z

462

2004 The Society for the Study of Evolution. All rights reserved. Evolution, 58(4), 2004, pp. 814824  

E-Print Network [OSTI]

from the ocean, and thus phenotypes in most populations are adapted to current conditions. Key words. Adaptive radiation, allopatric divergence, contemporary evolution, Gasterosteus aculeatus, invasion adaptive radiation of the threespine stickleback, Gasterosteus aculeatus, provides one of our most enlight

Aguirre, Windsor E.

463

2001 The Society for the Study of Evolution. All rights reserved. Evolution, 55(7), 2001, pp. 14081418  

E-Print Network [OSTI]

Department of Biology, University of Victoria, P.O. Box 3020, Victoria, British Columbia, V8W 3N5, Canada 2E evolution, phylogenetic analysis, Queen Charlotte Islands, random amplified polymorphic DNA. Received August

Reimchen, Thomas E.

464

Initialisation and Termination of Active Contour LevelSet Evolutions Martin Weber Andrew Blake Roberto Cipolla  

E-Print Network [OSTI]

Initialisation and Termination of Active Contour Level­Set Evolutions Martin Weber #3; Andrew Blake

Drummond, Tom

465

Schema Evolution and the Relational Algebra Edwin McKenzie and Richard Snodgrass  

E-Print Network [OSTI]

Schema Evolution and the Relational Algebra Edwin McKenzie and Richard Snodgrass Department time, evolution of a database's contents and evolution of a database's schema. We define a relation; the contents of the database must adhere to that structure [Date 1976, Ullman 1982]. Schema evolution refers

Snodgrass, Richard T.

466

An Empirical Analysis of the Co-evolution of Schema and Code in Database Applications  

E-Print Network [OSTI]

An Empirical Analysis of the Co-evolution of Schema and Code in Database Applications Dong Qiu accordingly. Although database evolution and software evolution have been ex- tensively studied in isolation, the co-evolution of schema and code has largely been unexplored. This paper presents the first

Su, Zhendong

467

Short-term genome evolution of Listeria monocytogenes in a non-controlled environment  

E-Print Network [OSTI]

Background: While increasing data on bacterial evolution in controlled environments are available, our understanding of

Orsi, Renato H.

468

Effect of Sawtooth Activity on Tritium and Beam Deuterium Evolution in Trace Tritium Experiments on JET  

E-Print Network [OSTI]

Effect of Sawtooth Activity on Tritium and Beam Deuterium Evolution in Trace Tritium Experiments on JET

469

Regional refining models for alternative fuels using shale and coal synthetic crudes: identification and evaluation of optimized alternative fuels. Annual report, March 20, 1979-March 19, 1980  

SciTech Connect (OSTI)

The initial phase has been completed in the project to evaluate alternative fuels for highway transportation from synthetic crudes. Three refinery models were developed for Rocky Mountain, Mid-Continent and Great Lakes regions to make future product volumes and qualities forecast for 1995. Projected quantities of shale oil and coal oil syncrudes were introduced into the raw materials slate. Product slate was then varied from conventional products to evaluate maximum diesel fuel and broadcut fuel in all regions. Gasoline supplement options were evaluated in one region for 10% each of methanol, ethanol, MTBE or synthetic naphtha in the blends along with syncrude components. Compositions and qualities of the fuels were determined for the variation in constraints and conditions established for the study. Effects on raw materials, energy consumption and investment costs were reported. Results provide the basis to formulate fuels for laboratory and engine evaluation in future phases of the project.

Sefer, N.R.; Russell, J.A.

1980-11-01T23:59:59.000Z

470

Development of a three-dimensional particle image velocimetry algorithm and analysis of synthetic and experimental flows in three-dimensions  

E-Print Network [OSTI]

DEVELOPMENT OF A THREE-DIMENSIONAL PARTICLE IMAGE VELOCIMETRY ALGORITHM AND ANALYSIS OF SYNTHETIC AND EXPERIMENTAL FLOWS IN THREE-DIMENSIONS A Thesis by S YLVAIN VINCENT COSTES Submitted to the Office of Graduate Studies of Texas A8t... . . . . 7 . . . . 8 . . . . 8 9 . . . . . 9 . . . 10 . 10 . . 12 13 . . . . 19 19 . . . . 19 19 . . 22 vu CHAPTER IV. B. 3. Determination of ph pih pj and prj IV. B. 4. Determination of horizontal refraction angles . . . . . IV. C...

Costes, Sylvain Vincent

2012-06-07T23:59:59.000Z

471

A constellation of CubeSats with synthetic tracking cameras to search for 90% of potentially hazardous near-Earth objects  

E-Print Network [OSTI]

Congress mandated NASA to find 90% of near-Earth objects (NEO) with sizes over 140m that are potentially hazardous to the Earth by the year 2020. After an in-depth look at a number of alternative approaches, the National Research Council (NRC) concluded in 2010 that this goal was nearly impossible to reach by 2020. In this paper, we present a new space mission concept that is capable of addressing the challenges of this Congressional mandate. The proposed mission concept relies on two emerging technologies: the technique of synthetic tracking to detect NEOs and the new generation of small and capable interplanetary spacecraft. Synthetic tracking is a technique that de-streaks asteroid images by taking multiple fast exposures. With synthetic tracking, a 600 sec observation with a 10cm telescope, which can fit in a CubeSat, can detect a 20.5 mag moving object without losing sensitivity from streaking. Our primary science objective is to detect, track, catalogue, and characterize 90% of NEAs of H=22 mag (diamete...

Shao, Michael; Spangelo, Sara; Werne, Thomas

2015-01-01T23:59:59.000Z

472

On the Radio and Optical Luminosity Evolution of Quasars  

SciTech Connect (OSTI)

We calculate simultaneously the radio and optical luminosity evolutions of quasars, and the distribution in radio loudness R defined as the ratio of radio and optical luminosities, using a flux limited data set containing 636 quasars with radio and optical fluxes from White et al. We first note that when dealing with multivariate data it is imperative to first determine the true correlations among the variables, not those introduced by the observational selection effects, before obtaining the individual distributions of the variables. We use the methods developed by Efron and Petrosian which are designed to obtain unbiased correlations, distributions, and evolution with redshift from a data set truncated due to observational biases. It is found that as expected the population of quasars exhibits strong positive correlation between the radio and optical luminosities and that this correlation deviates from a simple linear relation in a way indicating that more luminous quasars are more radio loud. We also find that there is a strong luminosity evolution with redshift in both wavebands, with significantly higher radio than optical evolution. We conclude that the luminosity evolution obtained by arbitrarily separating the sources into radio loud (R > 10) and radio quiet (R < 10) populations introduces significant biases that skew the result considerably. We also construct the local radio and optical luminosity functions and the density evolution. Finally, we consider the distribution of the radio loudness parameter R obtained from careful treatment of the selection effects and luminosity evolutions with that obtained from the raw data without such considerations. We find a significant difference between the two distributions and no clear sign of bi-modality in the true distribution. Our results indicate therefore, somewhat surprisingly, that there is no critical switch in the efficiency of the production of disk outflows/jets between very radio quiet and very radio loud quasars, but rather a smooth transition. Also, this efficiency seems higher for the high-redshift and more luminous sources in the considered sample.

Singal, J.; /KIPAC, Menlo Park /SLAC; Petrosian, V.; /KIPAC, Menlo Park /SLAC /Stanford U., Phys. Dept. /Stanford U., Appl. Phys. Dept.; Lawrence, A.; /Edinburgh U., Inst. Astron.; Stawarz, L.; /JAXA, Sagamihara /Jagiellonian U., Astron. Observ.

2011-05-20T23:59:59.000Z

473

KrF- and ArF-excimer-laser-induced absorption in silica glasses produced by melting synthetic silica powder  

SciTech Connect (OSTI)

KrF- and ArF-excimer-laser-induced absorption of silica glasses produced by electric melting and flame fusion of synthetic silica powder were investigated. The growth of KrF-laser-induced absorption was more gradual than that of ArF-laser-induced absorption. Induced absorption spectra exhibited a peak at about 5.8 eV, of which the position and width differed slightly among samples and laser species. Widths of ArF-laser-induced absorption spectra were wider than those of KrF-laser-induced spectra. KrF-laser-induced absorption is reproducible by two Gaussian absorption bands peaking at 5.80 eV with full width at half maximum (FWHM) of 0.62 eV and at 6.50 eV with FWHM of 0.74 eV. For reproduction of ArF-laser-induced absorption, Gaussian bands at 5.41 eV with FWHM of 0.62 eV was necessary in addition to components used for reproducing KrF-laser-induced absorption. Based on the discussion of the change of defect structures evaluated from change of absorption components, we proposed that the precursor of the 5.8-eV band ascribed to E Prime center ({identical_to}Si{center_dot}) is {identical_to}Si-H HO-Si{identical_to} structures formed by the reaction between strained Si-O-Si bonds and interstitial H{sub 2} molecules during the irradiation.

Kuzuu, Nobu; Sasaki, Toshiya; Kojima, Tatsuya [Department of Applied Physics, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507 (Japan); Tanaka, Jun-ichiro; Nakamura, Takayuki; Horikoshi, Hideharu [Tosoh SGM Corp., 4555 Kaisei-cho, Shunan-shi, Yamaguchi 746-0006 (Japan)

2013-07-07T23:59:59.000Z

474

Evolution of Photosynthesis and Biospheric Oxygenation Contingent Upon Nitrogen Fixation?  

E-Print Network [OSTI]

How photosynthesis by Precambrian cyanobacteria oxygenated Earth's biosphere remains incompletely understood. Here it is argued that the oxic transition, which took place between approximately 2.3 and 0.5 Gyr ago, required a great proliferation of cyanobacteria, and this in turn depended on their ability to fix nitrogen via the nitrogenase enzyme system. However, the ability to fix nitrogen was not a panacea, and the rate of biospheric oxygenation may still have been affected by nitrogen constraints on cyanobacterial expansion. Evidence is presented for why cyanobacteria probably have a great need for fixed nitrogen than other prokaryotes, underscoring the importance of their ability to fix nitrogen. The connection between nitrogen fixation and the evolution of photosynthesis is demonstrated by the similarities between nitrogenase and enzymes critical for the biosynthesis of (bacterio)chlorophyll. It is hypothesized that biospheric oxygenation would not have occurred if the emergence of cyanobacteria had not been preceded by the evolution of nitrogen fixation, and if these organisms had not also acquired the ability to fix nitrogen at the beginning of or very early in their history. The evolution of nitrogen fixation also appears to have been a precondition for the evolution of (bacterio)chlorophyll-based photosynthesis. Given that some form of chlorophyll is obligatory for true photosynthesis, and its light absorption and chemical properties make it a "universal pigment," it may be predicted that the evolution of nitrogen fixation and photosynthesis are also closely linked on other Earth- like planets.

John W. Grula

2006-05-12T23:59:59.000Z

475

Secular evolution of viscous and self-gravitating circumstellar discs  

E-Print Network [OSTI]

We add the effect of turbulent viscosity via the \\alpha-prescription to models of the self-consistent formation and evolution of protostellar discs. Our models are non-axisymmetric and carried out using the thin-disc approximation. Self-gravity plays an important role in the early evolution of a disc, and the later evolution is determined by the relative importance of gravitational and viscous torques. In the absence of viscous torques, a protostellar disc evolves into a self-regulated state with disk-averaged Toomre parameter Q \\sim 1.5-2.0, non-axisymmetric structure diminishing with time, and maximum disc-to-star mass ratio \\xi = 0.14. We estimate an effective viscosity parameter \\alpha_eff associated with gravitational torques at the inner boundary of our simulation to be in the range 10^{-4}-10^{-3} during the late evolution. Addition of viscous torques with a low value \\alpha = 10^{-4} has little effect on the evolution, structure, and accretion properties of the disc, and the self-regulated state is largely preserved. A sequence of increasing values of \\alpha results in the discs becoming more axisymmetric in structure, being more gravitationally stable, having greater accretion rates, larger sizes, shorter lifetimes, and lower disc-to-star mass ratios. For \\alpha=10^{-2}, the model is viscous-dominated and the self-regulated state largely disappears by late times. (Abridged)

E. I. Vorobyov; Shantanu Basu

2008-12-06T23:59:59.000Z

476

Imaging synthetic aperture radar  

DOE Patents [OSTI]

A linear-FM SAR imaging radar method and apparatus to produce a real-time image by first arranging the returned signals into a plurality of subaperture arrays, the columns of each subaperture array having samples of dechirped baseband pulses, and further including a processing of each subaperture array to obtain coarse-resolution in azimuth, then fine-resolution in range, and lastly, to combine the processed subapertures to obtain the final fine-resolution in azimuth. Greater efficiency is achieved because both the transmitted signal and a local oscillator signal mixed with the returned signal can be varied on a pulse-to-pulse basis as a function of radar motion. Moreover, a novel circuit can adjust the sampling location and the A/D sample rate of the combined dechirped baseband signal which greatly reduces processing time and hardware. The processing steps include implementing a window function, stabilizing either a central reference point and/or all other points of a subaperture with respect to doppler frequency and/or range as a function of radar motion, sorting and compressing the signals using a standard fourier transforms. The stabilization of each processing part is accomplished with vector multiplication using waveforms generated as a function of radar motion wherein these waveforms may be synthesized in integrated circuits. Stabilization of range migration as a function of doppler frequency by simple vector multiplication is a particularly useful feature of the invention; as is stabilization of azimuth migration by correcting for spatially varying phase errors prior to the application of an autofocus process.

Burns, Bryan L. (Tijeras, NM); Cordaro, J. Thomas (Albuquerque, NM)

1997-01-01T23:59:59.000Z

477

Synthetic and Mechanistic Chemistry  

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

several strategies being considered to create liquid fuel from different biomass feedstocks http:pearl1.lanl.govexternalResearchring-opening-article.shtml....

478

Synthetic and Mechanistic Chemistry  

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

several strategies being considered to create liquid fuel from different biomass feedstocks http:pearl1.lanl.govexternal Researchring-opening-article.shtml. *...

479

Bioremediation Synthetic Ecology  

E-Print Network [OSTI]

Dimension BTI Researchers test 3-D printing technology to scale up--and down For the Record 14 BTI members

Netoff, Theoden

480

Synthetic and Mechanistic Chemistry  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign Object Damage 3National LaboratoryX-rayand

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


481

Synthetic and Mechanistic Chemistry  

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

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

482

A NEW SYNTHETIC LIBRARY OF THE NEAR-INFRARED Ca II TRIPLET INDICES. I. INDEX DEFINITION, CALIBRATION, AND RELATIONS WITH STELLAR ATMOSPHERIC PARAMETERS  

SciTech Connect (OSTI)

Adopting the SPECTRUM package, which is a stellar spectral synthesis program, we have synthesized a comprehensive set of 2890 near-infrared (NIR) synthetic spectra with a resolution and wavelength sampling similar to the Sloan Digital Sky Survey (SDSS) and the forthcoming Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectra. During the synthesis, we applied the 'New grids of ATLAS9 Model Atmosphere' to develop a grid of local thermodynamic equilibrium model atmospheres for effective temperatures (T{sub eff}) ranging from 3500 to 7500 K, for surface gravities (log g) from 0.5 to 5.0 dex, for metallicities ([Fe/H]) from -4.0 to 0.5 dex, and for solar ([{alpha}/Fe] = 0.0 dex) and non-solar ([{alpha}/Fe] = +0.4 dex) abundances. This synthetic stellar library is composed of 1350 solar scaled abundance (SSA) and 1530 non-solar scaled abundance (NSSA) spectra, grounding on which we have defined a new set of NIR Ca II triplet indices and an index CaT as the sum of the three. These defined indices were automatically measured on every spectrum of the synthetic stellar library and calibrated with the indices computed on the observational spectra from the INDO-U.S. stellar library. In order to check the effect of {alpha}-element enhancement on the so-defined Ca II indices, we compared indices measured on the SSA spectra with those on the NSSA ones at the same trine of stellar parameters (T{sub eff}, log g, [Fe/H]); luckily, little influences of {alpha}-element enhancement were found. Furthermore, comparisons of our synthetic indices with the observational ones from measurements on the INDO-U.S. stellar library, the SDSS-DR7 and SDSS-DR8 spectroscopic survey are presented, respectively, for dwarfs and giants in specific. For dwarfs, our synthetic indices could well reproduce the behaviors of the observational indices versus stellar parameters, which verifies the validity of our index definitions for dwarfs. For giants, the consistency between our synthetic indices and the observational ones does not appear to be as good. However, a new synthetic library of NIR Ca II indices has been founded for deeper studies on the NIR wave band of stellar spectra, and this library is particularly appropriate for the SDSS and the forthcoming LAMOST stellar spectra. We have regressed the strength of the CaT index as a function of stellar parameters for both dwarfs and giants after a series of experimental investigations into relations of the indices with stellar parameters. For dwarfs, log g has little effect on the indices, while [Fe/H] and T{sub eff} play a role together. The leading factor is probably [Fe/H], which changes the strength of the indices by a positive trend. For giants, log g starts to influence the strength of the indices by a negative trend for the metal-poor, and even impact deeply for the metal-rich; besides, [Fe/H] and T{sub eff} still matter. In addition, we briefly discussed the major differences between our Ca II triplet indices and the CaHK doublet indices. Ultimately, a supplemental experiment was carried out to show that spectral noises do have effects on our set of NIR Ca II indices. However, the influence is not weak enough to be ignored if the signal-to-noise ratio falls below 20.

Du, W.; Luo, A. L.; Zhao, Y. H., E-mail: wdu@nao.cas.cn, E-mail: lal@nao.cas.cn [National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2012-02-15T23:59:59.000Z

483

Imaging the evolution of an ultracold strontium Rydberg gas  

E-Print Network [OSTI]

Clouds of ultracold strontium 5s48s 1S0 or 5s47d 1D2 Rydberg atoms are created by two photon excitation of laser cooled 5s2 1S0 atoms. The spontaneous evolution of the cloud of low orbital angular momentum (low-l) Rydberg states towards an ultracold neutral plasma is observed by imaging resonant light scattered from core ions, a technique that provides both spatial and temporal resolution. Evolution is observed to be faster for the S-states, which display isotropic attractive interactions, than for the D-states, which exhibit anisotropic, principally repulsive interactions. Immersion of the atoms in a dilute ultracold neutral plasma speeds up the evolution and allows the number of Rydberg atoms initially created to be determined.

McQuillen, P; Strickler, T; Dunning, F B; Killian, T C

2012-01-01T23:59:59.000Z

484

Calculation of TMD Evolution for Transverse Single Spin Asymmetry Measurements  

SciTech Connect (OSTI)

In this letter, we show that it is necessary to include the full treatment of QCD evolution of Transverse Momentum Dependent parton densities to explain discrepancies between HERMES data and recent COMPASS data on a proton target for the Sivers transverse single spin asymmetry in Semi-Inclusive Deep Inelastic Scattering (SIDIS). Calculations based on existing fits to TMDs in SIDIS, and including evolution within the Collins-Soper-Sterman with properly defined TMD PDFs are shown to provide a good explanation for the discrepancy. The non-perturbative input needed for the implementation of evolution is taken from earlier analyses of unpolarized Drell-Yan (DY) scattering at high energy. Its success in describing the Sivers function in SIDIS data at much lower energies is strong evidence in support of the unifying aspect of the QCD TMD-factorization formalism.

Mert Aybat, Ted Rogers, Alexey Prokudin

2012-06-01T23:59:59.000Z

485

An Adaptive Unified Differential Evolution Algorithm for Global Optimization  

SciTech Connect (OSTI)

In this paper, we propose a new adaptive unified differential evolution algorithm for single-objective global optimization. Instead of the multiple mutation strate- gies proposed in conventional differential evolution algorithms, this algorithm employs a single equation unifying multiple strategies into one expression. It has the virtue of mathematical simplicity and also provides users the flexibility for broader exploration of the space of mutation operators. By making all control parameters in the proposed algorithm self-adaptively evolve during the process of optimization, it frees the application users from the burden of choosing appro- priate control parameters and also improves the performance of the algorithm. In numerical tests using thirteen basic unimodal and multimodal functions, the proposed adaptive unified algorithm shows promising performance in compari- son to several conventional differential evolution algorithms.

Qiang, Ji; Mitchell, Chad

2014-11-03T23:59:59.000Z

486

Time Evolution of the External Field Problem in QED  

E-Print Network [OSTI]

We construct the time evolution for the second quantized Dirac equation subject to a smooth and compactly supported, time dependent, electrodynamic four-vector field. Earlier works on this (e.g. Ruijsenaars) observed the Shale-Stinespring condition and showed that the one particle time evolution can be lifted to Fock space if and only if the external field had zero magnetic components. The basic obstacle in the construction is that there is neither a distinguished Dirac sea, i.e. Fock space vacuum, nor a distinguished polarization. Therefore the key idea (suggested already by Fierz and Scharf) is to implement this time evolution between time varying Fock spaces. We show that this implementation is unique up to a phase. All induced transition amplitudes are unique and finite.

Deckert, D -A; Merkl, F; Schottenloher, M

2009-01-01T23:59:59.000Z

487

Accretion Disc Evolution in Single and Binary T Tauri Stars  

E-Print Network [OSTI]

We present theoretical models for the evolution of T Tauri stars surrounded by circumstellar discs. The models include the effects of pre-main-sequence stellar and time dependent disc evolution, and incorporate the effects of stellar magnetic fields acting on the inner disc. For single stars, consistency with observations in Taurus-Auriga demands that disc dispersal occurs rapidly, on much less than the viscous timescale of the disc, at roughly the epoch when heating by stellar radiation first dominates over internal viscous dissipation. Applying the models to close binaries, we find that because the initial conditions for discs in binaries are uncertain, studies of extreme mass ratio systems are required to provide a stringent test of theoretical disc evolution models. We also note that no correlation of the infra-red colours of T Tauri stars with their rotation rate is observed, in apparent contradiction to the predictions of simple magnetospheric accretion models.

Philip J. Armitage; C. J. Clarke; C. A. Tout

1998-10-30T23:59:59.000Z

488

Spectral Characteristic Evolution: A New Algorithm for Gravitational Wave Propagation  

E-Print Network [OSTI]

We present a spectral algorithm for solving the full nonlinear vacuum Einstein field equations in the Bondi framework. Developed within the Spectral Einstein Code (SpEC), we demonstrate spectral characteristic evolution as a technical precursor to Cauchy Characteristic Extraction (CCE), a rigorous method for obtaining gauge-invariant gravitational waveforms from existing and future astrophysical simulations. We demonstrate the new algorithm's stability, convergence, and agreement with existing evolution methods. We explain how an innovative spectral approach enables a two orders of magnitude improvement in computational efficiency.

Casey J. Handmer; Béla Szilágyi

2014-09-24T23:59:59.000Z

489

Cosmological Evolution of Fundamental Constants: From Theory to Experiment  

E-Print Network [OSTI]

In this paper we discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, we explain that such a cosmological time evolution is actually something very natural which can be described by mechanisms similar to those used to explain cosmic inflation. We then discuss implications for grand unified theories, showing that the unification condition of the gauge coupling could evolve with cosmological time. Measurements of the electron-to-proton mass ratio can test grand unified theories using low energy data. Following the theoretical discussion, we review the current status of precision measurements of fundamental constants and their potential cosmological time dependence.

Xavier Calmet; Matthias Keller

2014-12-05T23:59:59.000Z

490

Harmonic initial-boundary evolution in general relativity  

SciTech Connect (OSTI)

Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional numerical code which we demonstrate to provide stable, convergent Cauchy evolution in gauge wave and shifted gauge wave testbeds. Code performance is compared for Dirichlet, Neumann, and Sommerfeld boundary conditions and for boundary conditions which explicitly incorporate constraint preservation. The results are used to assess strategies for obtaining physically realistic boundary data by means of Cauchy-characteristic matching.

Babiuc, Maria C. [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Szilagyi, Bela [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany); Winicour, Jeffrey [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany)

2006-03-15T23:59:59.000Z

491

Calculation of TMD Evolution for Transverse Single Spin Asymmetry Measurements  

E-Print Network [OSTI]

The Sivers transverse single spin asymmetry (TSSA) is calculated and compared at different scales using the TMD evolution equations applied to previously existing extractions. We apply the Collins-Soper-Sterman (CSS) formalism, using the version recently developed by Collins. Our calculations rely on the universality properties of TMD-functions that follow from the TMD-factorization theorem. Accordingly, the non-perturbative input is fixed by earlier experimental measurements, including both polarized semi-inclusive deep inelastic scattering (SIDIS) and unpolarized Drell-Yan (DY) scattering. It is shown that recent COMPASS measurements are consistent with the suppression prescribed by TMD evolution.

S. Mert Aybat; Alexei Prokudin; Ted C. Rogers

2012-06-27T23:59:59.000Z

492

Time evolution of entangled biatomic states in a cavity  

SciTech Connect (OSTI)

We study the time evolution of entangled states of a pair of identical atoms, considered in the harmonic approximation, coupled to an environment represented by an infinite set of free oscillators, with the whole system confined within a spherical cavity of radius R. Taking the center-of-mass and the relative-position coordinates, and using the dressed-state approach, we present the time evolution of some quantities measuring the entanglement for both limits of a very large and a small cavity; the chosen examples are simple and illustrate these very distinct behaviors.

Figueiredo, E. G. [Instituto de Fisica, Universidade Federal da Bahia, 40210-340, Salvador, BA (Brazil); Centro de Cie circumflex ncias Exatas e Tecnologicas, Universidade Federal do Reco circumflex ncavo da Bahia, 44380-000, Cruz das Almas, BA (Brazil); Linhares, C. A. [Instituto de Fisica, Universidade do Estado do Rio de Janeiro, 20559-900, Rio de Janeiro, RJ (Brazil); Malbouisson, A. P. C. [Centro Brasileiro de Pesquisas Fisicas/MCT, 22290-180, Rio de Janeiro, RJ (Brazil); Malbouisson, J. M. C. [Instituto de Fisica, Universidade Federal da Bahia, 40210-340, Salvador, BA (Brazil)

2011-10-15T23:59:59.000Z

493

Contrasting copper evolution in Omega Centauri and the Milky Way  

E-Print Network [OSTI]

Despite the many studies on stellar nucleosynthesis published so far, the scenario for the production of Cu in stars remains elusive. In particular, it is still debated whether copper originates mostly in massive stars or type Ia supernovae. To answer this question, we compute self-consistent chemical evolution models taking into account the results of updated stellar nucleosynthesis. By contrasting copper evolution in Omega Cen and the Milky Way, we end up with a picture where massive stars are the major responsible for the production of Cu in Omega Cen as well as the Galactic disc.

Donatella Romano; Francesca Matteucci

2007-03-29T23:59:59.000Z

494

Harmonic Initial-Boundary Evolution in General Relativity  

E-Print Network [OSTI]

Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional numerical code which we demonstrate to provide stable, convergent Cauchy evolution in gauge wave and shifted gauge wave testbeds. Code performance is compared for Dirichlet, Neumann and Sommerfeld boundary conditions and for boundary conditions which explicitly incorporate constraint preservation. The results are used to assess strategies for obtaining physically realistic boundary data by means of Cauchy-characteristic matching.

Maria C. Babiuc; Bela Szilagyi; Jeffrey Winicour

2006-03-14T23:59:59.000Z

495

Spatiotemporal evolution of dielectric driven cogenerated dust density waves  

SciTech Connect (OSTI)

An experimental observation of spatiotemporal evolution of dust density waves (DDWs) in cogenerated dusty plasma in the presence of modified field induced by glass plate is reported. Various DDWs, such as vertical, oblique, and stationary, were detected simultaneously for the first time. Evolution of spatiotemporal complexity like bifurcation in propagating wavefronts is also observed. As dust concentration reaches extremely high value, the DDW collapses. Also, the oblique and nonpropagating mode vanishes when we increase the number of glass plates, while dust particles were trapped above each glass plates showing only vertical DDWs.

Sarkar, Sanjib; Bose, M. [Department of Physics, Jadavpur University, Kolkata 700032 (India)] [Department of Physics, Jadavpur University, Kolkata 700032 (India); Mukherjee, S. [FCIPT, Institute for Plasma Research, Gandhinagar 382428 (India)] [FCIPT, Institute for Plasma Research, Gandhinagar 382428 (India); Pramanik, J. [Kharagpur College, Kharagpur 721305, West Bengal (India)] [Kharagpur College, Kharagpur 721305, West Bengal (India)

2013-06-15T23:59:59.000Z

496

In vivo toxic and lethal cardiovascular effects of a synthetic polymeric 1,3-dodecylpyridinium salt in rodents  

SciTech Connect (OSTI)

APS12-2 is one in a series of synthetic analogs of the polymeric alkylpyridinium salts isolated from the marine sponge Reniera sarai. As it is a potential candidate for treating non small cell lung cancer (NSCLC), we have studied its possible toxic and lethal effects in vivo. The median lethal dose (LD{sub 50}) of APS12-2 in mice was determined to be 11.5 mg/kg. Electrocardiograms, arterial blood pressure and respiratory activity were recorded under general anesthesia in untreated, pharmacologically vagotomized and artificially ventilated rats injected with APS12-2. In one group, the in vivo effects of APS12-2 were studied on nerve-evoked muscle contraction. Administration of APS12-2 at a dose of 8 mg/kg caused a progressive reduction of arterial blood pressure to a mid-circulatory value, accompanied by bradycardia, myocardial ischemia, ventricular extrasystoles, and second degree atrio-ventricular block. Similar electrocardiogram and arterial blood pressure changes caused by APS12-2 (8 mg/kg) were observed in animals pretreated with atropine and in artificially ventilated animals, indicating that hypoxia and cholinergic effects do not play a crucial role in the toxicity of APS12-2. Application of APS12-2 at sublethal doses (4 and 5.5 mg/kg) caused a decrease of arterial blood pressure, followed by an increase slightly above control values. We found that APS12-2 causes lysis of rat erythrocytes in vitro, therefore it is reasonable to expect the same effect in vivo. Indeed, hyperkalemia was observed in the blood of experimental animals. Hyperkalemia probably plays an important role in APS12-2 cardiotoxicity since no evident changes in histopathology of the heart were found. However, acute lesions were observed in the pulmonary vessels of rats after application of 8 mg/kg APS12-2. Predominant effects were dilation of interalveolar blood vessels and lysis of aggregated erythrocytes within their lumina. - Highlights: > LD{sub 50} estimated in mice (11.5 mg/kg) revealed that toxicity of APS12-2 is low. > APS12-2 causes dose dependent hemolysis of rat erythrocytes in vivo and in vitro. > Cardiac arrest by APS12-2 is caused by the high blood potassium concentration. > APS12-2 causes mild acute pulmonary edema.

Grandic, Marjana [Institute of Physiology, Pharmacology and Toxicology, Veterinary Faculty, University of Ljubljana, Gerbiceva 60, 1000 Ljubljana (Slovenia); Sepcic, Kristina; Turk, Tom [Department of Biology, Biotechnical Faculty, University of Ljubljana, Vecna pot 111, 1000 Ljubljana (Slovenia); Juntes, Polona [Institute of Pathology, Forensic and Administrative Veterinary Medicine, Veterinary Faculty, University of Ljubljana, Gerbiceva 60, 1000 Ljubljana (Slovenia); Frangez, Robert, E-mail: robert.frangez@vf.uni-lj.si [Institute of Physiology, Pharmacology and Toxicology, Veterinary Faculty, University of Ljubljana, Gerbiceva 60, 1000 Ljubljana (Slovenia)

2011-08-15T23:59:59.000Z

497

Evolution of asymptotic giant branch stars II. Optical to far-infrared isochrones with improved TP-AGB models  

E-Print Network [OSTI]

We present a large set of theoretical isochrones, whose distinctive features mostly reside on the greatly improved treatment of the thermally pulsing asymptotic giant branch (TP-AGB) phase. Essentially, we have coupled the TP-AGB tracks described in Paper I, at their stages of pre-flash quiescent H-shell burning, with the evolutionary tracks for the previous evolutionary phases from Girardi et al. (2000). Theoretical isochrones for any intermediate value of age and metallicity are then derived by interpolation in the grids. We take care that the isochrones keep, to a good level of detail, the several peculiarities present in these TP-AGB tracks. Theoretical isochrones are then converted to about 20 different photometric systems -- including traditional ground-based systems, and those of recent major wide-field surveys such as SDSS, OGLE, DENIS, 2MASS, UKIDSS, etc., -- by means of synthetic photometry applied to an updated library of stellar spectra, suitably extended to include C-type stars. Finally, we correct the predicted photometry by the effect of circumstellar dust during the mass-losing stages of the AGB evolution, which allows us to improve the results for the optical-to-infrared systems, and to simulate mid- and far-IR systems such as those of Spitzer and AKARI. Access to the data is provided both via a web repository of static tables (http://stev.oapd.inaf.it/dustyAGB07 and CDS), and via an interactive web interface (http://stev.oapd.inaf.it/cmd) that provides tables for any intermediate value of age and metallicity, for several photometric systems, and for different choices of dust properties.

Paola Marigo; Leo Girardi; Alessandro Bressan; Martin A. T. Groenewegen; Laura Silva; Gian Luigi Granato

2008-02-11T23:59:59.000Z

498

Evolution of extracellular enzyme activities during manure composting  

E-Print Network [OSTI]

Evolution of extracellular enzyme activities during manure composting S.M. Tiquia Environmental to determine the extracellular enzyme pro®les during composting, relate the activities of these enzymes manure composting. Results showed an overall increase in diversity and relative abundance of enzymes

Tiquia-Arashiro, Sonia M.

499

Evolution for the Sustainability of Internetware Daren Fang, Xiaodong Liu  

E-Print Network [OSTI]

, or required by the running environments [4]. To satisfy certain sustainability metrics as a series of concreteEvolution for the Sustainability of Internetware Daren Fang, Xiaodong Liu School of Computing Yang Software Technology Research Laboratory De Montfort University Leicester, UK +44 116 2506398 hyang

Liu, Xiaodong

500

College of Engineering and Architecture Evolution of Control for the  

E-Print Network [OSTI]

College of Engineering and Architecture Evolution of Control for the Smart Transmission Grid Anjan Bose Washington State University Pullman, WA SCE Smart Grid Research Symposium California Institute metering ·Ink chart recording ·Light and sound alarming ·Hard wired remote switching ·Analog Load Frequency