Powered by Deep Web Technologies
Note: This page contains sample records for the topic "biochemical systems theory" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Synthesizing stochasticity in biochemical systems  

Science Conference Proceedings (OSTI)

Randomness is inherent to biochemistry: at each instant, the sequence of reactions that fires is a matter of chance. Some biological systems exploit such randomness, choosing between different outcomes stochastically - in effect, hedging their bets with ... Keywords: biochemical reactions, computational biology, markov processes, random processes, stochasticity, synthesis, synthetic biology

Brian Fett; Jehoshua Bruck; Marc D. Riedel

2007-06-01T23:59:59.000Z

2

Algebraic methods for biochemical reaction network theory  

E-Print Network (OSTI)

theory [BBCQ04, CFR08]. Convex geometry and differential geometry have also played a role in chemical reactor

Shiu, Anne

2010-01-01T23:59:59.000Z

3

Recent developments in parameter estimation and structure identification of biochemical and genomic systems  

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

Recent Recent developments in parameter estimation and structure identification of biochemical and genomic systems I-Chun Chou * , Eberhard O. Voit Integrative BioSystems Institute and The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Atlanta, GA 30332, USA a r t i c l e i n f o Article history: Received 2 October 2008 Received in revised form 6 March 2009 Accepted 15 March 2009 Available online 25 March 2009 Keywords: Parameter estimation Network identification Inverse modeling Biochemical Systems Theory a b s t r a c t The organization, regulation and dynamical responses of biological systems are in many cases too com- plex to allow intuitive predictions and require the support of mathematical modeling for quantitative assessments and a reliable understanding of system functioning. All steps of constructing

4

Stochastic Control Analysis for Biochemical Reaction Systems  

E-Print Network (OSTI)

In this paper, we investigate how stochastic reaction processes are affected by external perturbations. We describe an extension of the deterministic metabolic control analysis (MCA) to the stochastic regime. We introduce stochastic sensitivities for mean and covariance values of reactant concentrations and reaction fluxes and show that there exist MCA-like summation theorems among these sensitivities. The summation theorems for flux variances are shown to depend on the size of the measurement time window ($\\epsilon$), within which reaction events are counted for measuring a single flux. The degree of the $\\epsilon$-dependency can become significant for processes involving multi-time-scale dynamics and is estimated by introducing a new measure of time scale separation. This $\\epsilon$-dependency is shown to be closely related to the power-law scaling observed in flux fluctuations in various complex networks. We propose a systematic way to control fluctuations of reactant concentrations while minimizing changes in mean concentration levels. Such orthogonal control is obtained by introducing a control vector indicating the strength and direction of parameter perturbations leading to a sensitive control. We also propose a possible implication in the control of flux fluctuation: The control distribution for flux fluctuations changes with the measurement time window size, $\\epsilon$. When a control engineer applies a specific control operation on a reaction system, the system can respond contrary to what is expected, depending on the time window size $\\epsilon$.

Kyung Hyuk Kim; Herbert M. Sauro

2009-04-20T23:59:59.000Z

5

Quantum proof systems and entanglement theory  

E-Print Network (OSTI)

Quantum complexity theory is important from the point of view of not only theory of computation but also quantum information theory. In particular, quantum multi-prover interactive proof systems are defined based on ...

Abolfathe Beikidezfuli, Salman

2009-01-01T23:59:59.000Z

6

Numerical Simulation and Modelling of Electronic and Biochemical Systems  

Science Conference Proceedings (OSTI)

Numerical simulation and modelling are witnessing a resurgence. Designing systems with integrated wireless components, mixed-signal blocks and nanoscale, multi-GHz "digital" circuits is requiring extensive low-level modelling and simulation. Analysis ...

Jaijeet Roychowdhury

2009-02-01T23:59:59.000Z

7

Giddens's structuration theory and information systems research  

Science Conference Proceedings (OSTI)

The work of the contemporary British sociologist Anthony Giddens, and in particular his structuration theory, has been widely cited by Information Systems researchers. This paper presents a critical review of the work of Giddens and its application in ... Keywords: IS research, review, structuration theory

Matthew R. Jones; Helena Karsten

2008-03-01T23:59:59.000Z

8

The computation of stability boundaries in state space for a class of biochemical engineering systems  

Science Conference Proceedings (OSTI)

The stability of a class of biochemical processes defined by a set of m biochemical reactions involving n components is analysed. The processes operate in a continuous mode and possess at least two stable equilibrium states: the normal operating point ... Keywords: 92-08, 92C45, 93D20, Biochemical processes, Convergence, Nonlinearity, Stability boundaries, Visualization

Mihaela Sbarciog; Mia Loccufier; Erik Noldus

2008-06-01T23:59:59.000Z

9

Modules and Behaviours in nD Systems Theory  

Science Conference Proceedings (OSTI)

This paper is intended both as an introduction to the behavioural theory of nD systems, in particular the duality of Oberst and its applications, and also as a bridge between the behavioural theory and the module-theoretic approach of Fliess, Pommaret ... Keywords: behavioural approach, duality, module theory, system observables, torsion

Jeffrey Wood

2000-04-01T23:59:59.000Z

10

BLG theory with generalized Jordan triple systems  

E-Print Network (OSTI)

We use a generalized Jordan algebra of the second kind to study the recently proposed BLG theory of multiple M2-branes. We find the restriction imposed on the ternary product from its consistency with the BLG theory.

Sudipto Paul Chowdhury; Subir Mukhopadhyay; Koushik Ray

2009-03-17T23:59:59.000Z

11

The quantum systems control and the optimal control theory  

E-Print Network (OSTI)

Mathematical theory of the quantum systems control is based on some ideas of the optimal control theory. These ideas are developed here as applied to these systems. The results obtained meet the deficiencies in the basis and algorithms of the control synthesis and expand the application of these methods.

V. F. Krotov

2008-04-21T23:59:59.000Z

12

Quantitative training system assessments using General Systems Performance Theory  

E-Print Network (OSTI)

The use of computers for imparting education and training is rapidly gaining widespread acceptance. There is considerable evidence in literature to show that computer-based training (CBT) can lower training costs and shorten the time taken to complete training. Although considerable work has been done in the area of development of computer-based training systems, there has been little work done in the domain of assessing the effectiveness of using computer-based methods for the purposes of training. Furthermore, performance evaluations of CBT systems to date have been performed using ad-hoc, context-specific methods. There is thus a need to provide a uniform basis for performance assessments of computer-based training systems. This thesis presents a quantitative approach to the problem of performance assessments of CBT systems, using a theoretical framework known as General Systems Performance Theory. We believe the approach presented in this thesis can be used to provide a quantitative characterization of the performance of any training system in any training domain. The thesis also demonstrates the proposed approach by applying it to evaluate the performance of a set of training systems towards achieving the goal of training situational awareness skills.

Kashyap, Sujatha

2000-01-01T23:59:59.000Z

13

N=2 supersymmetric gauge theories and quantum integrable systems  

E-Print Network (OSTI)

We study N=2 supersymmetric gauge theories on the product of a two-sphere and a cylinder. We show that the low-energy dynamics of a BPS sector of such a theory is described by a quantum integrable system, with the Planck constant set by the inverse of the radius of the sphere. If the sphere is replaced with a hemisphere, then our system reduces to an integrable system of the type studied by Nekrasov and Shatashvili. In this case we establish a correspondence between the effective prepotential of the gauge theory and the Yang-Yang function of the integrable system.

Yuan Luo; Meng-Chwan Tan; Junya Yagi

2013-10-02T23:59:59.000Z

14

N=2 supersymmetric gauge theories and quantum integrable systems  

E-Print Network (OSTI)

We study N=2 supersymmetric gauge theories on the product of a two-sphere and a cylinder. We show that the low-energy dynamics of a BPS sector of such a theory is described by a quantum integrable system, with the Planck constant set by the inverse of the radius of the sphere. If the sphere is replaced with a hemisphere, then our system reduces to an integrable system of the type studied by Nekrasov and Shatashvili. In this case we establish a correspondence between the effective prepotential of the gauge theory and the Yang-Yang function of the integrable system.

Luo, Yuan; Yagi, Junya

2013-01-01T23:59:59.000Z

15

DISCIPLE-1: interactive apprentice system in weak theory fields  

Science Conference Proceedings (OSTI)

The paper presents an interactive approach to learning apprentice systems for weak theory domains. The approach consists of a combination of teaming by analogy and learning by generalizing instances. One main point of this approach is that it uses the ...

Yves Kodratoff; Gheorghe Tecuci

1987-08-01T23:59:59.000Z

16

Topological field theory of dynamical systems  

SciTech Connect

Here, it is shown that the path-integral representation of any stochastic or deterministic continuous-time dynamical model is a cohomological or Witten-type topological field theory, i.e., a model with global topological supersymmetry (Q-symmetry). As many other supersymmetries, Q-symmetry must be perturbatively stable due to what is generically known as non-renormalization theorems. As a result, all (equilibrium) dynamical models are divided into three major categories: Markovian models with unbroken Q-symmetry, chaotic models with Q-symmetry spontaneously broken on the mean-field level by, e.g., fractal invariant sets (e.g., strange attractors), and intermittent or self-organized critical (SOC) models with Q-symmetry dynamically broken by the condensation of instanton-antiinstanton configurations (earthquakes, avalanches, etc.) SOC is a full-dimensional phase separating chaos and Markovian dynamics. In the deterministic limit, however, antiinstantons disappear and SOC collapses into the 'edge of chaos.' Goldstone theorem stands behind spatio-temporal self-similarity of Q-broken phases known under such names as algebraic statistics of avalanches, 1/f noise, sensitivity to initial conditions, etc. Other fundamental differences of Q-broken phases is that they can be effectively viewed as quantum dynamics and that they must also have time-reversal symmetry spontaneously broken. Q-symmetry breaking in non-equilibrium situations (quenches, Barkhausen effect, etc.) is also briefly discussed.

Ovchinnikov, Igor V. [Department of Electrical Engineering, University of California at Los Angeles, Los Angeles, California 90095-1594 (United States)

2012-09-15T23:59:59.000Z

17

A Generalized Systems Theory for the Effect of Varying Fluctuations on Cloud Droplet Size Distributions  

Science Conference Proceedings (OSTI)

A systems theory has previously been developed by Liu and Hallett to interpret droplet size distributions in turbulent clouds by utilizing ideas from statistical physics and information theory. The present paper generalizes that systems theory to ...

Yangang Liu; Peter H. Daum; John Hallett

2002-07-01T23:59:59.000Z

18

Theory of ground state factorization in quantum cooperative systems  

E-Print Network (OSTI)

We introduce a general analytic approach to the study of factorization points and factorized ground states in quantum cooperative systems. The method allows to determine rigorously existence, location, and exact form of separable ground states in a large variety of, generally non-exactly solvable, spin models belonging to different universality classes. The theory applies to translationally invariant systems, irrespective of spatial dimensionality, and for spin-spin interactions of arbitrary range.

Giampaolo, S M; Illuminati, F

2008-01-01T23:59:59.000Z

19

Theory of ground state factorization in quantum cooperative systems  

E-Print Network (OSTI)

We introduce a general analytic approach to the study of factorization points and factorized ground states in quantum cooperative systems. The method allows to determine rigorously existence, location, and exact form of separable ground states in a large variety of, generally non-exactly solvable, spin models belonging to different universality classes. The theory applies to translationally invariant systems, irrespective of spatial dimensionality, and for spin-spin interactions of arbitrary range.

S. M. Giampaolo; G. Adesso; F. Illuminati

2008-04-01T23:59:59.000Z

20

Development of new Consolidity Theory for systems' analysis and design in fully fuzzy environment  

Science Conference Proceedings (OSTI)

This paper establishes the foundation of new systems' Consolidity Theory using the Arithmetic Fuzzy Logic-Based Representation approach for investigating the internal behavior of systems operating in fully fuzzy environment. Consolidated systems are ... Keywords: Advanced fuzzy control systems, Arithmetic Fuzzy Logic-Based Representation, Fuzzy dynamic systems, Fuzzy econometric models, Fuzzy smart grids, Fuzzy theory, Normalized fuzzy matrices, Systems' Consolidity Theory

Hassen Taher Dorrah; Walaa Ibrahim Gabr

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Application of Floquet theory to dynamical systems with memory  

E-Print Network (OSTI)

We extend the recently developed generalized Floquet theory [Phys. Rev. Lett. 110, 170602 (2013)] to systems with infinite memory. In particular, we show that a lower asymptotic bound exists for the Floquet exponents associated to such cases. As examples, we analyze the cases of an ideal 1D system, a Brownian particle, and a circuit resonator with an ideal transmission line. All these examples show the usefulness of this new approach to the study of dynamical systems with memory, which are ubiquitous in science and technology.

Fabio L. Traversa; Massimiliano Di Ventra; Federica Cappelluti; Fabrizio Bonani

2013-08-17T23:59:59.000Z

22

The benchmark of gutzwiller density functional theory in hydrogen systems  

SciTech Connect

We propose an approximate form of the exchange-correlation energy functional for the Gutzwiller density functional theory. It satisfies certain physical constraints in both weak and strong electron correlation limits. We benchmark the Gutzwiller density functional approximation in the hydrogen systems, where the static correlation error is shown to be negligible. The good transferability is demonstrated by applications to the hydrogen molecule and some crystal structures.

Yao, Y.; Wang, Cai-Zhuang; Ho, Kai-Ming

2012-02-23T23:59:59.000Z

23

Conductance of finite systems and scaling in localization theory  

SciTech Connect

The conductance of finite systems plays a central role in the scaling theory of localization (Abrahams et al., Phys. Rev. Lett. 42, 673 (1979)). Usually it is defined by the Landauer-type formulas, which remain open the following questions: (a) exclusion of the contact resistance in the many-channel case; (b) correspondence of the Landauer conductance with internal properties of the system; (c) relation with the diffusion coefficient D({omega}, q) of an infinite system. The answers to these questions are obtained below in the framework of two approaches: (1) self-consistent theory of localization by Vollhardt and Woelfle, and (2) quantum mechanical analysis based on the shell model. Both approaches lead to the same definition for the conductance of a finite system, closely related to the Thouless definition. In the framework of the self-consistent theory, the relations of finite-size scaling are derived and the Gell-Mann-Low functions {beta}(g) for space dimensions d = 1, 2, 3 are calculated. In contrast to the previous attempt by Vollhardt and Woelfle (1982), the metallic and localized phase are considered from the same standpoint, and the conductance of a finite system has no singularity at the critical point. In the 2D case, the expansion of {beta}(g) in 1/g coincides with results of the {sigma}-model approach on the two-loop level and depends on the renormalization scheme in higher loops; the use of dimensional regularization for transition to dimension d = 2 + {epsilon} looks incompatible with the physical essence of the problem. The results are compared with numerical and physical experiments. A situation in higher dimensions and the conditions for observation of the localization law {sigma}({omega}) {proportional_to} -i{omega} for conductivity are discussed.

Suslov, I. M., E-mail: suslov@kapitza.ras.ru [Kapitza Institute for Physical Problems (Russian Federation)

2012-11-15T23:59:59.000Z

24

Biochem. J.  

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

29, 29, 533-543 (Printed in Great Britain) doi:10.1042/BJ20100238 533 Identification of a novel UDP-sugar pyrophosphorylase with a broad substrate specificity in Trypanosoma cruzi Ting YANG*† and Maor BAR-PELED†‡ 1 *Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, U.S.A., †Complex Carbohydrate Research Center (CCRC), University of Georgia, Athens, GA 30602, U.S.A., and ‡Department of Plant Biology, University of Georgia, Athens, GA 30602, U.S.A. The diverse types of glycoconjugates synthesized by trypanoso- matid parasites are unique compared with the host cells. These glycans are required for the parasite survival, invasion or evasion of the host immune system. Synthesis of those glycoconjugates requires a constant supply of nucleotide-sugars (NDP-sugars), yet little is known about how these NDP-sugars are made

25

Modeling biochemical pathways using an artificial chemistry  

Science Conference Proceedings (OSTI)

Artificial chemistries are candidates for methodologies that model and design biochemical systems. If artificial chemistries can deal with such systems in beneficial ways, they may facilitate activities in the new area of biomolecular engineering. In ... Keywords: Artificial chemistry, biochemical pathways, biomolecular engineering, modularity, reasoning, scalability

Kazuto Tominaga; Yoshikazu Suzuki; Keiji Kobayashi; Tooru Watanabe; Kazumasa Koizumi; Koji Kishi

2009-01-01T23:59:59.000Z

26

Complexity within the Air Force acquisition system gaining insight from a theory of collapse  

E-Print Network (OSTI)

Joseph Tainter's theory of societal collapse is applied in an examination of the U.S. Air Force's aircraft acquisition system in order to gain insight into the enterprise's lagging performance. Theories of collapse at both ...

Marticello, Daniel Nicholas, Jr

2012-01-01T23:59:59.000Z

27

Decision support system for water distribution systems based on neural networks and graphs theory for leakage detection  

Science Conference Proceedings (OSTI)

This paper presents an efficient and effective decision support system (DSS) for operational monitoring and control of water distribution systems based on a three layer General Fuzzy Min-Max Neural Network (GFMMNN) and graph theory. The operational monitoring ... Keywords: Decision support system, Graph theory, Loop corrective flows equations, Modeling and simulation, Neural network, Operational control of water distribution systems

Corneliu T. C. Arsene; Bogdan Gabrys; David Al-Dabass

2012-12-01T23:59:59.000Z

28

A behavioral theory of insider-threat risks: A system dynamics approach  

Science Conference Proceedings (OSTI)

The authors describe a behavioral theory of the dynamics of insider-threat risks. Drawing on data related to information technology security violations and on a case study created to explain the dynamics observed in that data, the authors constructed ... Keywords: Insider threat, behavioral theory, judgment and decision making, policy analysis, risk, security modeling, signal detection theory, system dynamics modeling

Ignacio J. Martinez-Moyano; Eliot Rich; Stephen Conrad; David F. Andersen; Thomas R. Stewart

2008-04-01T23:59:59.000Z

29

BEST: Biochemical Engineering Simulation Technology  

DOE Green Energy (OSTI)

The idea of developing a process simulator that can describe biochemical engineering (a relatively new technology area) was formulated at the National Renewable Energy Laboratory (NREL) during the late 1980s. The initial plan was to build a consortium of industrial and U.S. Department of Energy (DOE) partners to enhance a commercial simulator with biochemical unit operations. DOE supported this effort; however, before the consortium was established, the process simulator industry changed considerably. Work on the first phase of implementing various fermentation reactors into the chemical process simulator, ASPEN/SP-BEST, is complete. This report will focus on those developments. Simulation Sciences, Inc. (SimSci) no longer supports ASPEN/SP, and Aspen Technology, Inc. (AspenTech) has developed an add-on to its ASPEN PLUS (also called BioProcess Simulator [BPS]). This report will also explain the similarities and differences between BEST and BPS. ASPEN, developed by the Massachusetts Institute of Technology for DOE in the late 1970s, is still the state-of-the-art chemical process simulator. It was selected as the only simulator with the potential to be easily expanded into the biochemical area. ASPEN/SP, commercially sold by SimSci, was selected for the BEST work. SimSci completed work on batch, fed-batch, and continuous fermentation reactors in 1993, just as it announced it would no longer commercially support the complete ASPEN/SP product. BEST was left without a basic support program. Luckily, during this same time frame, AspenTech was developing a biochemical simulator with its version of ASPEN (ASPEN PLUS), which incorporates most BEST concepts. The future of BEST will involve developing physical property data and models appropriate to biochemical systems that are necessary for good biochemical process design.

Not Available

1996-01-01T23:59:59.000Z

30

Biochemical transformation of coals  

DOE Patents (OSTI)

A method of biochemically transforming macromolecular compounds found in solid carbonaceous materials, such as coal is provided. The preparation of new microorganisms, metabolically weaned through challenge growth processes to biochemically transform solid carbonaceous materials at extreme temperatures, pressures, pH, salt and toxic metal concentrations is also disclosed. 7 figs.

Lin, M.S.; Premuzic, E.T.

1999-03-23T23:59:59.000Z

31

Conservation of resources theory and research use in health systems  

E-Print Network (OSTI)

taxonomy of organizational (health systems) resources thatmodel for organizational stress in health systems and otherthat organizational resources may affect health systems

2010-01-01T23:59:59.000Z

32

Evolution and biochemical similarities  

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

eat is because all living things are biochemically similar, we share the same nutrient stock. That alone is a striking support. Opposing evidence? I can't think of anything worth...

33

The Extended Higgs System in $R$-symmetric Supersymmetry Theories  

E-Print Network (OSTI)

The Higgs sector is extended in $R$-symmetric supersymmetry theories by two iso-doublets $R_{d,u}$ which complement the standard iso-doublets $H_{d,u}$. We have analyzed masses and interactions of these novel states and describe their [non-standard] decay modes and their production channels at the LHC and $e^+e^-$ colliders.

S. Y. Choi; D. Choudhury; A. Freitas; J. Kalinowski; P. M. Zerwas

2010-12-13T23:59:59.000Z

34

Fuzzy theory applied in quality management of distributed manufacturing system: A literature review and classification  

Science Conference Proceedings (OSTI)

Fuzzy theory has been regarded as a very important technique for quality management (QM) of distributed manufacturing system and attracts the attentions of academic and industry; however, there is a lack of a comprehensive literature review and a classification ... Keywords: Classification, Clustering analysis, Distributed manufacturing network, Fuzzy theory, Quality management

Lv Yaqiong; Lee Ka Man; Wu Zhang

2011-03-01T23:59:59.000Z

35

SVM Theory and Its Application in Fault Diagnosis of HVDC System  

Science Conference Proceedings (OSTI)

Support Vector Machine (SVM), which based on Statistical Learning Theory, is a universal machine learning method. The fault diagnosis of nonlinear and high-controllable High Voltage Direct Current (HVDC) system based on SVM method is proposed, which ...

Xi-Mei Liu; Wan-Yun Wei; Fei Yu

2007-08-01T23:59:59.000Z

36

Solar System Constraints on a Cosmologically Viable $f(R)$ Theory  

E-Print Network (OSTI)

Recently, a model $f(R)$ theory is proposed \\cite{recent} which is cosmologically viable and distinguishable from $\\Lambda$CDM. We use chameleon mechanism to investigate viability of the model in terms of Solar System experiments.

Yousef Bisabr

2009-07-22T23:59:59.000Z

37

Two types of conservation laws. Connection of physical fields with material systems. Peculiarities of field theories  

E-Print Network (OSTI)

Historically it happen so that in branches of physics connected with field theory and of physics of material systems (continuous media) the concept of "conservation laws" has a different meaning. In field theory "conservation laws" are those that claim the existence of conservative physical quantities or objects. These are conservation laws for physical fields. In contrast to that in physics (and mechanics) of material systems the concept of "conservation laws" relates to conservation laws for energy, linear momentum, angular momentum, and mass that establish the balance between the change of physical quantities and external action. In the paper presented it is proved that there exist a connection between of conservation laws for physical fields and those for material systems. This points to the fact that physical fields are connected with material systems. Such results has an unique significance for field theories. This enables one to substantiate many basic principles of field theories, such as, for example, the unity of existing field theories and the causality. The specific feature of field theory equations, namely, their connection to the equations for material systems, is elicited. Such results have been obtained by using skew-symmetric differential forms, which reflect the properties of conservation laws.

L. I. Petrova

2008-12-02T23:59:59.000Z

38

Technical communique: Duality in the behavioral systems theory  

Science Conference Proceedings (OSTI)

In this note, Willems' behavioral framework is slightly generalized in order to define the dual of a linear system and make the concepts of controllability and observability dual to each other. Keywords: ARMA-model, Adjoint, Dual, Homotopy, Linear behavior, Linear system, Transpose

Vakhtang Lomadze

2013-05-01T23:59:59.000Z

39

Biochemical upgrading of oils  

DOE Patents (OSTI)

A process for biochemical conversion of heavy crude oils is provided. The process includes contacting heavy crude oils with adapted biocatalysts. The resulting upgraded oil shows, a relative increase in saturated hydrocarbons, emulsions and oxygenates and a decrease in compounds containing in organic sulfur, organic nitrogen and trace metals. Adapted microorganisms which have been modified under challenged growth processes are also disclosed.

Premuzic, Eugene T. (East Moriches, NY); Lin, Mow S. (Rocky Point, NY)

1999-01-12T23:59:59.000Z

40

Biochemical upgrading of oils  

DOE Patents (OSTI)

A process for biochemical conversion of heavy crude oils is provided. The process includes contacting heavy crude oils with adapted biocatalysts. The resulting upgraded oil shows, a relative increase in saturated hydrocarbons, emulsions and oxygenates and a decrease in compounds containing organic sulfur, organic nitrogen and trace metals. Adapted microorganisms which have been modified under challenged growth processes are also disclosed. 121 figs.

Premuzic, E.T.; Lin, M.S.

1999-01-12T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

A Theory for Long-Lived Mesoscale Convective Systems  

Science Conference Proceedings (OSTI)

It is proposed that certain long-lived mesoscale convective systems maintain themselves through an interaction between quasi-balanced vertical motions and the diabatic effects of moist convection. Latent heat release, evaporation and melting of ...

D. J. Raymond; H. Jiang

1990-12-01T23:59:59.000Z

42

Protection and Control for Grid Connected Photovoltaic Power Generation System Based on Instantaneous Power Theory  

Science Conference Proceedings (OSTI)

Reliable protection and reasonable control run an important role in grid connected PV power generation system. The detection and calculation of real and reactive power are the bases of many inverter resident passive and active islanding detection method ... Keywords: Distributed generation, photovoltaic system, grid connected, protection and control, power theory

Fei Wang; Chengcheng Zhang

2009-05-01T23:59:59.000Z

43

Some recent applications of distributed parameter systems theory-A survey  

Science Conference Proceedings (OSTI)

A survey of some recent applications of distributed parameter systems theory is presented. The practical areas discussed range from process control problems in an industrial plant to the identification, monitoring and control of air and water quality ... Keywords: Applications, control, distributed parameter systems, identification, optimal design, state estimation

W. H. Ray

1978-05-01T23:59:59.000Z

44

Modeling and simulation of crowd using cellular discrete event systems theory  

Science Conference Proceedings (OSTI)

In this paper, we discuss how Cellular Discrete Event System Specification (Cell-DEVS) theory can be used in modeling and simulation of the crowd. We will show that the efficient cell update mechanism of Cell-DEVS allows for more efficient entity-based ... Keywords: cellular discrete event systems, crowd, pedestrian

Ronnie Farrell, Mohammad Moallemi, Sixuan Wang, Wang Xiang, Gabriel Wainer

2013-05-01T23:59:59.000Z

45

Simulation of mobile networks using discrete event system specification theory  

Science Conference Proceedings (OSTI)

The fourth generation (4G) of mobile telecommunication technology provides ultra-band internet access for mobile devices such as smartphones, tablets, and laptops. One of the challenges in the Long Term Evolution (LTE) 4G networks is the low data rate ... Keywords: DEVS, discrete event system specification, mobile networks

Mohammad Moallemi, Gabriel Wainer, Shafagh Jafer, Gary Boudreau, Ronald Casselman

2013-04-01T23:59:59.000Z

46

Thermal analysis of biochemical systems  

E-Print Network (OSTI)

Scientists, both academic and industrial, develop two main types of drugs: 1) small molecule drugs, which are usually chemically synthesized and are taken orally and 2) large molecule, biotherapeutic, or protein-based ...

McEuen, Scott Jacob

2013-01-01T23:59:59.000Z

47

Global Solutions of Hartree-Fock Theory and their Consequences for Strongly Correlated Quantum Systems  

E-Print Network (OSTI)

We present a density matrix approach for computing global solutions of Hartree-Fock theory, based on semidefinite programming (SDP), that gives upper and lower bounds on the Hartree-Fock energy of quantum systems. Equality of the upper- and lower-bound energies guarantees that the computed solution is the globally optimal solution of Hartree-Fock theory. For strongly correlated systems the SDP approach requires us to reassess the accuracy of the Hartree-Fock energies and densities from standard software packages for electronic structure theory. Calculations of the H$_{4}$ dimer and N$_{2}$ molecule show that the energies from SDP Hartree-Fock are lower than those from standard Hartree-Fock methods by 100-200 kcal/mol in the dissociation region. The present findings have important consequences for the computation and interpretation of electron correlation, which is typically defined relative to the Hartree-Fock energy and density.

Veeraraghavan, Srikant

2013-01-01T23:59:59.000Z

48

CellDesigner: a modeling tool for biochemical networks  

Science Conference Proceedings (OSTI)

Understanding of logic and dynamics of gene-regulatory and biochemical networks is a major challenge of systems biology. To facilitate this research topic, we have developed CellDesigner, a modeling tool of gene-regulatory and biochemical networks. CellDesigner ...

Akira Funahashi; Yukiko Matsuoka; Akiya Jouraku; Hiroaki Kitano; Norihiro Kikuchi

2006-12-01T23:59:59.000Z

49

Hazard source identification of mined-out area based on grey system theory  

Science Conference Proceedings (OSTI)

In order to avoid or reduce the mined-out area of instability, we should monitor these hazards in situation so as to achieve the purpose of disaster prevention and mitigation, using the monitoring results predicted and timely protective measures. Due ... Keywords: acoustic emission, grey system theory, rock mass failure

Haibo Zhang; Weidong Song

2010-10-01T23:59:59.000Z

50

Fluctuational-electrodynamic theory and dynamics of heat transfer in multiple dipolar systems  

E-Print Network (OSTI)

A general fluctuational-electrodynamic theory is developed to investigate radiative heat exchanges between objects which are assumed small compared with their thermal wavelength (dipolar approximation) in N-body systems immersed in a thermal bath. This theoretical framework is applied to study the dynamic of heating/cooling of three-body systems. We show that many-body interactions allow to tailor the temperature field distribution and to drastically change the time scale of thermal relaxation processes.

Messina, Riccardo; Biehs, Svend-Age; Ben-Abdallah, Philippe

2013-01-01T23:59:59.000Z

51

The model of information retrieval based on the theory of hypercomplex numerical systems  

E-Print Network (OSTI)

The paper provided a description of a new model of information retrieval, which is an extension of vector-space model and is based on the principles of the theory of hypercomplex numerical systems. The model allows to some extent realize the idea of fuzzy search and allows you to apply in practice the model of information retrieval practical developments in the field of hypercomplex numerical systems.

Lande, D V; Boyarinova, Yu E

2012-01-01T23:59:59.000Z

52

Gravitational radiation from compact binary systems in the massive Brans-Dicke theory of gravity  

E-Print Network (OSTI)

We derive the equations of motion, the periastron shift, and the gravitational radiation damping for quasicircular compact binaries in a massive variant of the Brans-Dicke theory of gravity. We also study the Shapiro time delay and the Nordtvedt effect in this theory. By comparing with recent observational data, we put bounds on the two parameters of the theory: the Brans-Dicke coupling parameter \\omega_{BD} and the scalar mass m_s. We find that the most stringent bounds come from Cassini measurements of the Shapiro time delay in the Solar System, that yield a lower bound \\omega_{BD}>40000 for scalar masses m_s1000 for m_s1250 for m_sradiation damping in the eccentric white dwarf-neutron star binary PSR J1141-6545, but a quantitative prediction requires the extension of our work to eccentric orbits.

Justin Alsing; Emanuele Berti; Clifford M. Will; Helmut Zaglauer

2011-12-21T23:59:59.000Z

53

Operator renewal theory and mixing rates for dynamical systems with infinite measure  

E-Print Network (OSTI)

We develop a theory of operator renewal sequences in the context of infinite ergodic theory. For large classes of dynamical systems preserving an infinite measure, we determine the asymptotic behaviour of iterates $L^n$ of the transfer operator. This was previously an intractable problem. Examples of systems covered by our results include (i) parabolic rational maps of the complex plane and (ii) (not necessarily Markovian) nonuniformly expanding interval maps with indifferent fixed points. In addition, we give a particularly simple proof of pointwise dual ergodicity (asymptotic behaviour of $\\sum_{j=1}^nL^j$) for the class of systems under consideration. In certain situations, including Pomeau-Manneville intermittency maps, we obtain higher order expansions for $L^n$ and rates of mixing. Also, we obtain error estimates in the associated Dynkin-Lamperti arcsine laws.

Melbourne, Ian

2010-01-01T23:59:59.000Z

54

On the theory of signal filtration in a bistable moderately dissipating oscillatory system  

Science Conference Proceedings (OSTI)

The interaction of a weak periodic signal with noise is studied theoretically in bistable systems. Based on the generalised Smoluhowski equation, it is shown that, depending on the relation between the friction coefficient and the oscillation eigenfrequency, the solution of this equation has the aperiodic or oscillatory character. Within the framework of the linear response theory, the stochastic resonance effect is explained and the optimum value of the friction coefficient is found at which the output signal-to-noise ratio of a bistable system exceeds the input signal-to-noise ratio. (nonlinear optical phenomena)

Dombrovskii, A N [Moscow State Institute of Radio Engineering, Electronics and Automatics (Technical University), Moscow (Russian Federation); Reshetnyak, S A; Shcheglov, V A [P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2005-11-30T23:59:59.000Z

55

A photosynthetic process modelled by a metabolic P system  

Science Conference Proceedings (OSTI)

Photosynthesis is the process used by plants, algae and some bacteria to obtain biochemical energy from sunlight. It is the most important process allowing life on earth. In this work, by applying the Log Gain theory of Metabolic P Systems, we define ... Keywords: Biomolecular dynamics, Discrete dynamical systems, Metabolic P systems, Non photochemical quenching process, P systems, Photosynthesis

Vincenzo Manca; Roberto Pagliarini; Simone Zorzan

2009-12-01T23:59:59.000Z

56

Solar System planetary orbital motions and f(R) Theories of Gravity  

E-Print Network (OSTI)

In this paper we study the effects of $f(R)$ Theories of Gravity on Solar System gravitational tests. In particular, starting from an exact solution of the field equation in vacuum, in the Palatini formalism, we work out the effects that the modifications to the Newtonian potential would induce on the Keplerian orbital elements of the Solar System planets, and compare them with the latest results in planetary orbit determination from the EPM2004 ephemerides. It turns out that the longitudes of perihelia and the mean longitudes are affected by secular precessions. We obtain the resulting best estimate of the parameter $k$ which, being simply related to the scalar curvature, measures the non linearity of the gravitational theory. We use our results to constrain the cosmological constant and show how $f(R)$ functions can be constrained, in principle. What we obtain suggests that, in agreement with other recent papers, the Solar System experiments are not effective to set such constraints, if compared to the cosmologically relevant values.

Matteo Luca Ruggiero; Lorenzo Iorio

2006-07-21T23:59:59.000Z

57

Biochemical Conversion Pilot Plant (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet provides information about Biochemical Conversion Pilot Plant capabilities and resources at NREL.

Not Available

2012-06-01T23:59:59.000Z

58

National Bioenergy Center Biochemical Platform Integration Project  

DOE Green Energy (OSTI)

April through June 2008 update on activities of the National Bioenergy Center's Biochemical Platform Integration Project.

Not Available

2008-07-01T23:59:59.000Z

59

A General Systems Theory for Chaos, Quantum Mechanics and Gravity for Dynamical Systems of all Space-Time Scales  

E-Print Network (OSTI)

Non-local connections, i. e. long-range space-time correlations intrinsic to the observed subatomic dynamics of quantum systems is also exhibited by macro-scale dynamical systems as selfsimilar fractal space-time fluctuations and is identified as self-organized criticality. The author has developed a general systems theory for the observed self-organized criticality applicable to dynamical systems of all space-time scales based on the concept that spatial integration of enclosed small-scale fluctuations results in the formation of large eddy circulation. The eddy energy spectrum therefore represents the statistical normal distribution according to the Central Limit Theorem. The additive amplitudes of eddies, when squared (variance or eddy kinetic energy), represent the statistical normal (probability) distribution, a result observed in the subatomic dynamics of quantum systems. The model predicts Kepler's laws of planetary motion for eddy circulation dynamics. Inverse square law of gravitation therefore applies to the eddy continuum ranging from subatomic to macro-scale dynamical systems, e.g. weather systems. The model is similar to a superstring model for subatomic dynamics which unifies quantum mechanical and classical concepts and manifestation of matter is visualised as vibrational modes in string-like energy flow patterns. The cumulative sum of centripetal forces in a hierarchy of vortex circulations may result in the observed inverse square law form for gravitational attraction between inertial masses of the eddies.

A M Selvam

2005-03-03T23:59:59.000Z

60

On automated message processing in electronic commerce and work support systems: speech act theory and expressive felicity  

Science Conference Proceedings (OSTI)

Electronic messaging, whether in an office environment or for electronic commerce, is normally carried out in natural language, even when supported by information systems. For a variety of reasons, it would be useful if electronic messaging systems could ... Keywords: electronic commerce, formal language for business communication, speech act theory

Steven O. Kimbrough; Scott A. Moore

1997-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Integrating gray system theory and logistic regression into case-based reasoning for safety assessment of thermal power plants  

Science Conference Proceedings (OSTI)

Safety assessment of thermal power plants (TPPs) is one of the important means to guarantee the safety of production in thermal power production enterprises. Due to various technical limitations, existing assessment approaches, such as analytic hierarchy ... Keywords: Case-based reasoning, Gray system theory, Intelligent decision support system, Logistic regression, Management safety assessment, Thermal power plants

Changyong Liang; Dongxiao Gu; Isabelle Bichindaritz; Xingguo Li; Chunrong Zuo; Wenen Cheng

2012-04-01T23:59:59.000Z

62

Security and Game Theory: Algorithms, Deployed Systems, Lessons Learned, 1st edition  

Science Conference Proceedings (OSTI)

Global threats of terrorism, drug-smuggling, and other crimes have led to a significant increase in research on game theory for security. Game theory provides a sound mathematical approach to deploy limited security resources to maximize their effectiveness. ...

Milind Tambe

2011-12-01T23:59:59.000Z

63

Multiple capillary biochemical analyzer  

DOE Patents (OSTI)

A multiple capillary analyzer allows detection of light from multiple capillaries with a reduced number of interfaces through which light must pass in detecting light emitted from a sample being analyzed, using a modified sheath flow cuvette. A linear or rectangular array of capillaries is introduced into a rectangular flow chamber. Sheath fluid draws individual sample streams through the cuvette. The capillaries are closely and evenly spaced and held by a transparent retainer in a fixed position in relation to an optical detection system. Collimated sample excitation radiation is applied simultaneously across the ends of the capillaries in the retainer. Light emitted from the excited sample is detected by the optical detection system. The retainer is provided by a transparent chamber having inward slanting end walls. The capillaries are wedged into the chamber. One sideways dimension of the chamber is equal to the diameter of the capillaries and one end to end dimension varies from, at the top of the chamber, slightly greater than the sum of the diameters of the capillaries to, at the bottom of the chamber, slightly smaller than the sum of the diameters of the capillaries. The optical system utilizes optic fibers to deliver light to individual photodetectors, one for each capillary tube. A filter or wavelength division demultiplexer may be used for isolating fluorescence at particular bands. 21 figs.

Dovichi, N.J.; Zhang, J.Z.

1995-08-08T23:59:59.000Z

64

A General Systems Theory for Atmospheric Flows and Atmospheric Aerosol Size Distribution  

E-Print Network (OSTI)

Atmospheric flows exhibit selfsimilar fractal spacetime fluctuations manifested as the fractal geometry to global cloud cover pattern and inverse power law form for power spectra of meteorological parameters such as windspeed, temperature, rainfall etc. Inverse power law form for power spectra indicate long-range spacetime correlations or non-local connections and is a signature of selforganised criticality generic to dynamical systems in nature such as river flows, population dynamics, heart beat patterns etc. The author has developed a general systems theory which predicts the observed selforganised criticality as a signature of quantumlike chaos in dynamical systems. The model predictions are (i) The fractal fluctuations can be resolved into an overall logarithmic spiral trajectory with the quasiperiodic Penrose tiling pattern for the internal structure. (ii) The probability distribution represents the power (variance) spectrum for fractal fluctuations and follows universal inverse power law form incorporating the golden mean. Such a result that the additive amplitudes of eddies when squared represent probability distribution is observed in the subatomic dynamics of quantum systems such as the electron or photon. Therefore the irregular or unpredictable fractal fluctuations exhibit quantumlike chaos. (iii) Atmospheric aerosols are held in suspension by the vertical velocity distribution (spectrum). The atmospheric aerosol size spectrum is derived in terms of the universal inverse power law characterizing atmospheric eddy energy spectrum. Model predicted spectrum is in agreement with the following two experimentally determined atmospheric aerosol data sets, (i) SAFARI 2000 CV-580 Aerosol Data, Dry Season 2000 (CARG) (ii) World Data Centre Aerosols data sets for the three stations Ny {\\AA}lesund, Pallas and Hohenpeissenberg.

A. M. Selvam

2009-08-17T23:59:59.000Z

65

Theory of quantum metal to superconductor transitions in highly conducting systems  

SciTech Connect

We derive the theory of the quantum (zero temperature) superconductor to metal transition in disordered materials when the resistance of the normal metal near criticality is small compared to the quantum of resistivity. This can occur most readily in situations in which 'Anderson's theorem' does not apply. We explicitly study the transition in superconductor-metal composites, in an swave superconducting film in the presence of a magnetic field, and in a low temperature disordered d-wave superconductor. Near the point of the transition, the distribution of the superconducting order parameter is highly inhomogeneous. To describe this situation we employ a procedure which is similar to that introduced by Mott for description of the temperature dependence of the variable range hopping conduction. As the system approaches the point of the transition from the metal to the superconductor, the conductivity of the system diverges, and the Wiedemann-Franz law is violated. In the case of d-wave (or other exotic) superconductors we predict the existence of (at least) two sequential transitions as a function of increasing disorder: a d-wave to s-wave, and then an s-wave to metal transition.

Spivak, B.

2010-04-06T23:59:59.000Z

66

Complete Detoxification of Short Chain Chlorinated Aliphatic Compounds: Isolation of Halorespiring Organisms and Biochemical Studies of the Dehalogenating Enzyme Systems - Final Report  

DOE Green Energy (OSTI)

Work focused on the isolation and characterization of halorespiring populations, and the initial investigation of the dechlorinating enzyme systems. In addition, tools to evaluate the presence/activity to halorespiring populations in the environment were developed. The tools developed in this work (measurements of hydrogen consumption thresholds, molecular probes) are relevant for regulatory agencies in order to facilitate decisions on which bioremediation technology (biostimulation or bioaugmentation) is most promising at a particular site. In addition, a better understanding of the physiology of the halorespiring organisms as well as the biochemistry of the dehalogenating enzyme systems enhances our knowledge of how these organisms can successfully be employed in the bioremediation of contaminated sites.

Tiedje, J.M.

1999-10-01T23:59:59.000Z

67

NREL: Biomass Research - Biochemical Conversion Capabilities  

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

Biochemical Conversion Capabilities Biochemical Conversion Capabilities NREL researchers are working to improve the efficiency and economics of the biochemical conversion process by focusing on the most challenging steps in the process. Biochemical conversion of biomass to biofuels involves three basic steps: Converting biomass to sugar or other fermentation feedstock through: Pretreatment Conditioning and enzymatic hydrolysis Enzyme development. Fermenting these biomass-derived feedstocks using: Microorganisms for fermentation. Processing the fermentation product to produce fuel-grade ethanol and other fuels, chemicals, heat, and electricity by: Integrating the bioprocess. Get the Adobe Flash Player to see this video. This video is a narrated animation that explains the biochemical conversion

68

Views on Applying RKW Theory: An Illustration Using the 8 May 2009 Derecho-Producing Convective System  

Science Conference Proceedings (OSTI)

This work presents an analysis of the vertical wind shear during the early stages of the remarkable 8 May 2009 central U.S. derecho-producing convective system. Comments on applying RotunnoKlempWeisman (RKW) theory to mesoscale convective ...

Michael C. Coniglio; Stephen F. Corfidi; John S. Kain

2012-03-01T23:59:59.000Z

69

Statistical mechanical theory for steady-state systems. III. Heat flow in a Lennard-Jones fluid  

E-Print Network (OSTI)

flow is developed based upon the second entropy for dynamical transitions between energy moment a molecular-dynamics trajectory was generated, and various time-dependent properties were accumulatedStatistical mechanical theory for steady-state systems. III. Heat flow in a Lennard-Jones fluid

Attard, Phil

70

Low Dose Radiation Research Program: Computational Modeling of Biochemical  

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

Computational Modeling of Biochemical Pathways Linking Ionizing Computational Modeling of Biochemical Pathways Linking Ionizing Radiation to Cell Cycle Arrest, Apoptosis, and Tumor Incidence Authors: Yuchao Maggie Zhao and Rory Conolly Institutions: Center for Computational Systems Biology CIIT Centers for Health Research Long-Range Goal: To develop an integrated, computational framework for the prediction of low-dose-response to ionizing radiation (IR) in people. Methodology: To provide a flexible framework to evaluate mechanisms of cellular adaptive responses after exposure to IR, three progressively more complicated descriptions of biochemical pathways linking DNA damage with cell-cycle checkpoint control and apoptosis were developed. These descriptions focus on p53-dependent checkpoint arrest and apoptosis, p73-dependent apoptosis, and Chk2-dependent checkpoint arrest,

71

Complete detoxification of short chain chlorinated aliphatic compounds: Isolation of halorespiring organisms and biochemical studies of the dehalogenating enzyme systems. 1998 annual progress report  

SciTech Connect

'Widespread use and careless handling, storage and disposal practices, have lead to the dissemination of chlorinated short chain aliphatics into groundwater systems. These compounds are toxic and the presence of chlorinated ethenes and chlorinated propanes in the environment is of public concern. Halorespiration is a newly recognized anaerobic process by which certain bacteria use chlorinated compounds as terminal electron acceptors in their energy metabolism. In contrast to co-metabolic dechlorination, which is fortuitous, slow, and without benefit to the organisms, halorespiration, characterized by high dechlorination rates, is a specific metabolic process beneficial to the organism. The goals are to isolate and characterize organisms which use chlorinated ethenes (including tetrachloroethene [PCE], trichloroethene [TCE], cis-dichloroethene [cis-DCE], and vinyl chloride [VC], or 1,2-dichloropropane [1,2-D]) as electron acceptors in their energy metabolism. Better understanding of the physiology and phylogeny of the halorespiring organisms as well as the biochemistry of the dehalogenating enzyme systems, will greatly enhance the authors knowledge of how these organisms can successfully be employed in the bioremediation of contaminated sites. This report summarizes the results of 1.5 years of a 2-year project. Anaerobic microcosms were established using a variety of geographically distinct sediments. In several microcosms complete dechlorination of PCE to ethene (ETH), and 1,2-D to propene was observed. Upon subsequent transfers to anaerobic medium, four sediment-free, methanogenic enrichment cultures were obtained that dechlorinated PCE to ETH, and two cultures that dechlorinated 1,2-D to propene. 2-Bromoethanesulfonate (BES), a well known inhibitor of methanogens, did not inhibit the dechlorination of 1,2-D to propene or the dechlorination of PCE to cis-DCE. However, the complete dechlorination of PCE to VC and ETH was severely inhibited. They could also show that BES inhibited the dechlorination of chloroethenes in cultures without methanogens. Therefore, BES should not be used to attribute dechlorination activities to methanogens.'

Tiedje, J.M.

1998-06-01T23:59:59.000Z

72

The dynamic structure of management support systems: theory development, research focus, and direction  

Science Conference Proceedings (OSTI)

Using a systems perspective, a conceptual model is developed that encompasses a broad class of systems whose fundamental purpose is the support of managerial actions and decision making. The term management support systems (MSS) is used to label this ... Keywords: business intelligence, decision support systems, executive information systems, knowledge management systems, management support systems

Thomas D. Clark; Mary C. Jones; Curtis P. Armstrong

2007-09-01T23:59:59.000Z

73

Personalized mobile English vocabulary learning system based on item response theory and learning memory cycle  

Science Conference Proceedings (OSTI)

Since learning English is very popular in non-English speaking countries, developing modern assisted-learning tools that support effective English learning is a critical issue in the English-language education field. Learning English involves memorization ... Keywords: English vocabulary learning, Item response theory, Learning memory cycle, Mobile learning, Personalized learning

Chih-Ming Chen; Ching-Ju Chung

2008-09-01T23:59:59.000Z

74

Generic Mechanism of Optimal Energy Transfer Efficiency: A Scaling Theory of the Mean First Passage Time in Exciton Systems  

E-Print Network (OSTI)

An asymptotic scaling theory is presented using the conceptual basis of trapping-free subspace (i.e., orthogonal subspace) to establish the generic mechanism of optimal efficiency of excitation energy transfer (EET) in light-harvesting systems. Analogous to Kramers' turnover in classical rate theory, the enhanced efficiency in the weak damping limit and the suppressed efficiency in the strong damping limit define two asymptotic scaling regimes, which are interpolated to predict the functional form of optimal efficiency of the trapping-free subspace. In the presence of static disorder, the scaling law of transfer time with respect to dephasing rate changes from linear to square root, suggesting a weaker dependence on the environment. Though formulated in the context of EET, the analysis and conclusions apply in general to open quantum processes, including electron transfer, fluorescence emission, and heat conduction.

Wu, Jianlan; Silbey, Robert J

2013-01-01T23:59:59.000Z

75

Dynamic Phase Transitions In The Spin-2 Ising System Under An Oscillating Magnetic Field Within The Effective-Field Theory  

SciTech Connect

The dynamic phase transitions are studied in the spin-2 Ising model under a time-dependent oscillating magnetic field by using the effective-field theory with correlations. The effective-field dynamic equation is derived by employing the Glauber transition rates and the phases in the system are obtained by solving this dynamic equation. The nature (first- or second-order) of the dynamic phase transition is characterized by investigating the thermal behavior of the dynamic order parameter and the dynamic phase transition temperatures are obtained. The dynamic phase diagrams are presented in (T/zJ, h/zJ) plane.

Ertas, Mehmet; Keskin, Mustafa [Department of Physics, Erciyes University, 38039 Kayseri (Turkey); Deviren, Bayram [Department of Physics, Nevsehir University, 50300 Nevsehir (Turkey)

2010-12-23T23:59:59.000Z

76

(Awarded Best Theory Paper!) A Probabilistic Approach to Estimating Computer System Reliability  

Science Conference Proceedings (OSTI)

Probabilistic Risk Assessment (PRA) is a method of estimating system reliability by combining logic models of the ways systems can fail with numerical failure rates. One postulates a failure state and systematically decomposes this state into a combination ...

Robert Apthorpe

2001-12-01T23:59:59.000Z

77

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Foaming Options · Compressed Air Foam Systems (CAFS) · Foam Blower · Foam Generator · Nozzle Systems #12;Disposal: Science and Theory Compressed ­ Industry owned response team #12;Disposal: Science and Theory Commercial CAFS for Poultry · Poultry

Benson, Eric R.

78

NREL: Biomass Research - Biochemical Conversion Projects  

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

Biochemical Conversion Projects Biochemical Conversion Projects A photo of a woman looking at the underside of a clear plastic tray. The tray has a grid of small holes to hold sample tubes. An NREL researcher examines a sample tray used in the BioScreen C, an instrument used to monitor the growth of microorganisms under different conditions. NREL's projects in biochemical conversion involve three basic steps to convert biomass feedstocks to fuels: Converting biomass to sugar or other fermentation feedstock Fermenting these biomass intermediates using biocatalysts (microorganisms including yeast and bacteria) Processing the fermentation product to yield fuel-grade ethanol and other fuels. Among the current biochemical conversion RD&D projects at NREL are: Pretreatment and Enzymatic Hydrolysis

79

An Experimental Verification, with Krypton, of the Theory of the Thermal Diffusion Column for Multicomponent Systems  

SciTech Connect

The extended form of the Jones and Furry theory, which describes the behavior of a multicomponent heavy isotopic gas in a Clusius-Dickel thermal diffusion column, is tested. Experimental and theoretical values of the thermal diffusion column transport equation coefficients Hsub{ik},Ksub{c}, and Ksub{d}, are determined for krypton, a heavy isotopic gas with six isotopes. The experiments are carried out in a column of the hotwire type, at three wire temperatures: Tsub{H}=350 degrees C, 500 degrees C and 800 degrees C. Good agreement is found between the theoretical and experimental values of the coefficients. Seven of nine of the experimentally determined values of the coefficients agree within +- 10% with the corressponding theoretical values. The remaining two experimental values agree within +- 20% with the corresponding theoretical values.

Roos, W. J.

1967-12-01T23:59:59.000Z

80

Theory of classical and quantum frustration in quantum many-body systems  

E-Print Network (OSTI)

We present a general scheme for the study of frustration in quantum systems. After introducing a universal measure of frustration for arbitrary quantum systems, we derive for it an exact inequality in terms of a class of entanglement monotones. We then state sufficient conditions for the ground states of quantum spin systems to saturate the inequality and confirm them with extensive numerical tests. These conditions provide a generalization to the quantum domain of the Toulouse criteria for classical frustration-free systems and establish a unified framework for studying the intertwining of geometric and quantum contributions to frustration.

Giampaolo, S M; Monras, A; Illuminati, F

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Interpretation of the Tadpole VV29 Merging Galaxy System using Hydro-Gravitational Theory  

E-Print Network (OSTI)

Hubble Space Telescope (HST/ACS) images of the galaxy merger Tadpole are interpreted using the hydro-gravitational theory of Gibson 1996-2000 (HGT) that predicts galaxy masses within about 100 kpc are dominated by dark halos of planetary mass primordial-fog-particles (PFPs) in dark proto-globular-star-clusters (PGCs). According to our interpretation, stars and young-globular-clusters (YGCs) appear out of the dark as merging galaxy components VV29cdef move through the baryonic-dark-matter halo of the larger galaxy VV29a creating luminous star-wakes. Frozen PFP planets are evaporated by radiation and tidal forces of the intruders. Friction from the gas accelerates an accretional cascade of PFPs to form larger planets, stars and YGCs of the filamentary galaxy VV29b. Star-wakes show that galaxy VV29c, identified as a blue dwarf by radio telescope observations of gas density and velocity (Briggs et al. 2001), with companions VV29def entered the dark halo of the larger VV29a galaxy at a radius 130 kpc and then spiraled in on different tracks toward frictional capture by the VV29a core. A previously dark dwarf galaxy is identified from a Keck spectrographic study showing a VV29c star-wake dense cluster of YGCs aligned to 1 degree in a close straight row (Tran et al. 2003).

Carl H. Gibson; Rudolph E. Schild

2002-10-26T23:59:59.000Z

82

Bioenergy Technologies Office: Biochemical Conversion  

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

production; developing and scaling catalytic systems for producing hydrocarbons and fuel-blend oxygenates from lignocellulosic material; and utilizing and valorizing lignin...

83

Aquifer Vulnerability Assessment to Petroleum Contaminants Based on Fuzzy Variable Set Theory and Geographic Information System  

Science Conference Proceedings (OSTI)

It is a common environmental and hydro-geological problem that groundwater system is contaminated by petroleum hydrocarbons. An important step of pollution control and treatment is aquifer vulnerability assessment. In this paper, a karst fissure groundwater ... Keywords: fuzzy variable set, GIS, aquifer, petroleum contamination, vulnerability, assessment

Li Qingguo; Ma Zhenmin; Fang Yunzhi; Chen Shouyu

2009-07-01T23:59:59.000Z

84

Kinetic Theory of the Heat Capacity of Two-Level Systems  

E-Print Network (OSTI)

It is shown that measured heat capacity depends on the rate of the temperature variation and on the initial state of a system. It is calculated here in the framework of two-level model. Fenomenological approach gives the same results.

Kornyushin, Yuri

2007-01-01T23:59:59.000Z

85

Theory for hydrostatic gas journal bearings for micro-electro-mechanical systems  

E-Print Network (OSTI)

The goal of the MIT micro-engine project is to develop high-speed rotating Power MEMS (Micro-Electro-Mechanical Systems) using computer chip fabrication technologies. To produce high power (10-50 W) in a small volume (less ...

Liu, Lixian, Ph. D. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

86

Novelty-Knowledge Alignment: A Theory of Design Convergence in Systems Development  

Science Conference Proceedings (OSTI)

Recent research emphasizing the need for more business knowledge in information technology IT units and more technical knowledge in line functions largely overlooks the question of when maintaining either form of such "peripheral" knowledge-a ... Keywords: Design Convergence, Iteration, Novelty, Oscillations, Peripheral Knowledge, Systems Development

Amrit Tiwana

2012-07-01T23:59:59.000Z

87

Hamilton-Jacobi theory for one dimensional autonomous systems using parametric transformations  

E-Print Network (OSTI)

A necessary and sufficient condition for a parameter transformation that leaves invariant the energy of a one dimensional autonomous system is obtained. Using a parameter transformation the Hamilton-Jacobi equation is solved by a quadrature. An example of this approach is given.

G. Gonzalez

2005-01-22T23:59:59.000Z

88

Wales, Alaska High Penetration Wind-Diesel Hybrid Power System: Theory of Operation  

Science Conference Proceedings (OSTI)

To reduce the cost of rural power generation and the environmental impact of diesel fuel usage, the Alaska Energy Authority (AEA), Kotzebue Electric Association (KEA, a rural Alaskan utility), and the National Renewable Energy Laboratory (NREL), began a collaboration in late 1995 to implement a high-penetration wind-diesel hybrid power system in a village in northwest Alaska. The project was intended to be both a technology demonstration and a pilot for commercial replication of the system in other Alaskan villages. During the first several years of the project, NREL focused on the design and development of the electronic controls, the system control software, and the ancillary components (power converters, energy storage, electric dump loads, communications links, etc.) that would be required to integrate new wind turbines with the existing diesels in a reliable highly automated system. Meanwhile, AEA and KEA focused on project development activities, including wind resource assessment, site selection and permitting, community relationship building, and logistical planning. Ultimately, the village of Wales, Alaska, was chosen as the project site. Wales is a native Inupiat village of approximately 160 inhabitants, with an average electric load of about 75 kW.

Drouilhet, S.; Shirazi, M.

2002-05-01T23:59:59.000Z

89

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Brief History of Foam 2004 ­ Bud and foam 2009 ­ No advantage for gas #12;Disposal: Science and Theory What is foam? · What is fire fighting system. #12;Disposal: Science and Theory Foam Composition · Foam can include ­ Mixture of surfactants

Benson, Eric R.

90

Theory and experiment reveal unexpected calcium profiles in one-dimensional systems  

E-Print Network (OSTI)

Calcium is an ubiquitous second messenger that triggers a plethora of key physiological responses. The events are initiated in micro- or nano-sized compartments and determined by the complex interactions with calcium-binding proteins and mechanisms of calcium clearance. Local calcium increases in the vicinity of single channels represent an essentially non-linear reaction-diffusion problem that have been analysed previously using various linearized approximations. I revisited the problem of stationary patterns that can be generated by the point calcium source in the presence of buffer and obtained new explicit solutions. Main results of the analysis of the calcium buffering are supplemented with pertinent derivations and discussion of respective mathematical problems in Appendices. I show that for small calcium influx the calcium gradients around established around channel lumen have quasi-exponential form. For bigger fluxes, when the buffer is saturated, the model predicts periodic patterns. The transition between the two regimes depend on the capacity of buffer and its mobility. Theoretical predictions were examined using a model one-dimensional system. For sufficiently big fluxes the oscillatory calcium patterns were observed. Theoretical and experimental results are discussed in terms of their possible physiological implications.

S. L. Mironov

2013-04-30T23:59:59.000Z

91

PERTURBATION THEORY IN THE ONE-PHASE REGION OF AN ELECTRON-ION SYSTEM  

DOE Green Energy (OSTI)

The region of validity of our previously derived series expansion for the pressure of an electron-ion system in powers of the electron charge is investigated. For the case of Hydrogen, we both assess the radius of convergence of the series, as a function of the de Broglie density, and cross-compare the results with those from the spherical cellular model. These methods more or less agree in an understandable way, and indicate that the region of validity lies well inside the one-phase region. We are then in a position to combine the series results with our experiential knowledge and thus extend our assessment to general values of Z. Also, as is well known, there is a region of high density and low temperature where the pressure and the internal energy are almost independent of temperature. For this region we may, for each density, use the highest temperature for which that independence holds (to the desired accuracy) and thus extend the series results.

G. BAKER; J. JOHNSON

2000-09-01T23:59:59.000Z

92

FICS--A PROGRAM TO COMPUTE FEW-GROUP CONSTANTS WITHIN THE KARE DIFFUSION THEORY SYSTEM  

DOE Green Energy (OSTI)

FICS is a group constant program available as an alternative to the WOXX routine within the KARE System. FICS computes diffusion constants and macroscopic cross sections for slowing down, absorption, nu -fission, and total removal in two, three, or four energy groups for each compositional region in the reactor model. The one-group thermal constants are provided by a variational technique which computes an approximate Wigner-Wilkins flux spectrum as a linear combination of two trial spectra. These consist of a low-absorption spectrum and a high-absorption spectrum, covering the energies below 0.625 ev in 32 lethargy intervals. The thermal group constants are determined by averaging lethargy- dependent microscopic cross sections and diffusion constants over the composite spectrum. FICS' thermal constants are temperaturedependent with region temperatures from 68 to 600 nif- F permitted. In the fast energy range, 10 Mev to 0.625 ev, the program computes temperature-independent constants in one, two, or three energy groups. These are determined from stored microscopic cross sections which were obtained by curve fitting to MUFT parameters over a wide range of metal-water ratios. FICS provides optional calculations, some of which modify the group constants for special purposes, while others merely prepare and transmit data to other segments. Included are: automatic Xenon determination; special prescriptions for thin, highly absorbing regions; an adjoint option; a technique for handling window shade'' control rods; automatic calculation of fission products; mixed number density modification; spectrum option; precalculated group constant option, depletion option; AMOK option; and special calculations for r-z synthesis. (auth)

Goodman, D.E.

1963-01-01T23:59:59.000Z

93

DENSE MULTIPHASE FLOW SIMULATION: CONTINUUM MODEL FOR POLY-DISPERSED SYSTEMS USING KINETIC THEORY  

SciTech Connect

The overall objective of the project was to verify the applicability of the FCMOM approach to the kinetic equations describing the particle flow dynamics. For monodispersed systems the fundamental equation governing the particle flow dynamics is the Boltzmann equation. During the project, the FCMOM was successfully applied to several homogeneous and in-homogeneous problems in different flow regimes, demonstrating that the FCMOM has the potential to be used to solve efficiently the Boltzmann equation. However, some relevant issues still need to be resolved, i.e. the homogeneous cooling problem (inelastic particles cases) and the transition between different regimes. In this report, the results obtained in homogeneous conditions are discussed first. Then a discussion of the validation results for in-homogeneous conditions is provided. And finally, a discussion will be provided about the transition between different regimes. Alongside the work on development of FCMOM approach studies were undertaken in order to provide insights into anisotropy or particles kinetics in riser hydrodynamics. This report includes results of studies of multiphase flow with unequal granular temperatures and analysis of momentum re-distribution in risers due to particle-particle and fluid-particle interactions. The study of multiphase flow with unequal granular temperatures entailed both simulation and experimental studies of two particles sizes in a riser and, a brief discussion of what was accomplished will be provided. And finally, a discussion of the analysis done on momentum re-distribution of gas-particles flow in risers will be provided. In particular a discussion of the remaining work needed in order to improve accuracy and predictability of riser hydrodynamics based on two-fluid models and how they can be used to model segregation in risers.

Moses Bogere

2011-08-31T23:59:59.000Z

94

Rigged Hilbert space formalism as an extended mathematical formalism for quantum systems. II. Transformation theory in nonrelativistic quantum mechanics  

Science Conference Proceedings (OSTI)

Results of a previous paper are used to obtain a rigorous mathematical formulation of the transformation theory of nonrelativistic quantum mechanics within the framework of rigged Hilbert spaces.

O. Melsheimer

1974-01-01T23:59:59.000Z

95

Studies on the Effects of Inorganic Salts on Biochemical Treatment ...  

Science Conference Proceedings (OSTI)

Effects of two inorganic salts (sodium chloride and sodium sulphate) on biochemical ... Numerical Investigation of Heat Transfer Characteristics in Microwave...

96

Social influence on the use of Clinical Decision Support Systems: Revisiting the Unified Theory of Acceptance and Use of Technology by the fuzzy DEMATEL technique  

Science Conference Proceedings (OSTI)

The aim of study is to examine whether social influence affects medical professionals' behavioral intention to use while introducing a new Clinical Decision Support System (CDSS). The series of Technology Acceptance Models (TAMs) have been widely applied ... Keywords: Clinical Decision Support System (CDSS), Fuzzy Decision-Making Trial and Evaluation Laboratory (fuzzy DEMATEL), Social influence, Technology Acceptance Model (TAM), Unified Theory of Acceptance and Use of Technology (UTAUT)

Don Jyh-Fu Jeng; Gwo-Hshiung Tzeng

2012-04-01T23:59:59.000Z

97

Electroweak Theory  

Science Conference Proceedings (OSTI)

The electroweak theory unifies two basic forces of nature: the weak force and electromagnetism. This 2007 book is a concise introduction to the structure of the electroweak theory and its applications. It describes the structure and properties of field ...

E. A. Paschos

2010-06-01T23:59:59.000Z

98

Intrinsic Solar System decoupling of a scalar-tensor theory with a universal coupling between the scalar field and the matter Lagrangian  

E-Print Network (OSTI)

In this communication, we present a class of Brans-Dicke-like theories with a universal coupling between the scalar field and the matter Lagrangian. We show this class of theories naturally exhibits a decoupling mechanism between the scalar field and matter. As a consequence, this coupling leads to almost the same phenomenology as general relativity in the Solar System: the trajectories of massive bodies and the light propagation differ from general relativity only at the second post-Newtonian order. Deviations from general relativity are beyond present detection capabilities. However, this class of theories predicts a deviation of the gravitational redshift at a level detectable by the future ACES and STE/QUEST missions.

Olivier Minazzoli; Aurlien Hees

2013-08-13T23:59:59.000Z

99

BIOCHEMICAL PROCESSES FOR GEOTHERMAL BRINE TREATMENT  

DOE Green Energy (OSTI)

As part of the DOE Geothermal Energy Program, BNL's Advanced Biochemical Processes for Geothermal Brines (ABPGB) project is aimed at the development of cost-efficient and environmentally acceptable technologies for the disposal of geothermal wastes. Extensive chemical studies of high and low salinity brines and precipitates have indicated that in addition to trace quantities of regulated substances, e.g., toxic metals such as arsenic and mercury, there are significant concentrations of valuable metals, including gold, silver and platinum. Further chemical and physical studies of the silica product have also shown that the produced silica is a valuable material with commercial potential. A combined biochemical and chemical technology is being developed which (1) solubilizes, separates, and removes environmentally regulated constituents in geothermal precipitates and brines (2) generates an amorphous silica product which may be used as feedstock for the production of revenue generating materials, (3) recover economically valuable trace metals and salts. Geothermal power resources which utilize low salinity brines and use the Stretford process for hydrogen sulfide abatement generate a contaminated sulfur cake. Combined technology converts such sulfur to a commercial grade sulfur, suitable for agricultural use. The R and D activities at BNL are conducted jointly with industrial parties in an effort focused on field applications.

PREMUZIC,E.T.; LIN,M.S.; BOHENEK,M.; JOSHI-TOPE,G.; ZHOU,W.; SHELENKOVA,L.; WILKE,R.

1998-09-20T23:59:59.000Z

100

Biochemical processes for geothermal brine treatment  

DOE Green Energy (OSTI)

As part of the DOE Geothermal Energy Program, BNL`s Advanced Biochemical Processes for Geothermal Brines (ABPGB) project is aimed at the development of cost-efficient and environmentally acceptable technologies for the disposal of geothermal wastes. Extensive chemical studies of high and low salinity brines and precipitates have indicated that in addition to trace quantities of regulated substances, e.g., toxic metals such as arsenic and mercury, there are significant concentrations of valuable metals, including gold, silver and platinum. Further chemical and physical studies of the silica product have also shown that the produced silica is a valuable material with commercial potential. A combined biochemical and chemical technology is being developed which (1) solubilizes, separates, and removes environmentally regulated constituents in geothermal precipitates and brines, (2) generates an amorphous silica product which may be used as feedstock for the production of revenue generating materials, (3) recover economically valuable trace metals and salts. Geothermal power resources which utilize low salinity brines and use the Stretford process for hydrogen sulfide abatement generate a contaminated sulfur cake. Combined technology converts such sulfur to a commercial grade sulfur, suitable for agricultural use. The R and D activities at BNL are conducted jointly with industrial parties in an effort focused on field applications.

Premuzic, E.T.; Lin, M.S.; Bohenek, M.; Joshi-Tope, G.; Zhou, W.; Shelenkova, L.; Wilke, R.

1998-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Recent advances in the use of density functional theory to design efficient solar energy-based renewable systems  

Science Conference Proceedings (OSTI)

This article reviews the use of Density Functional Theory (DFT) to study the electronic and optical properties of solar-active materials and dyes used in solar energy conversion applications (dye-sensitized solar cells and water splitting). We first give a brief overview of the DFT its development

Ramy Nashed; Yehea Ismail; Nageh K. Allam

2013-01-01T23:59:59.000Z

102

Joint Theory Institute  

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

Program General Info Program General Info Registration Info Directions to Argonne Dynamics of Symmetry Breaking A Workshop sponsored by the ANL/UChicago Joint Theory Institute April 13-17, 2009 Argonne National Laboratory, IL The Joint Theory Institute (JTI) is a multi-disciplinary research institution jointly supported at the University of Chicago and Argonne National Laboratory to enhance collaborative research between both institutions in the broad area of theory. This year JTI sponsors a workshop the aim of which is to explore the dynamics of symmetry breaking in a broad range of systems from nuclear physics to string theory, using theoretical insights such as Dyson-Schwinger equations formalism, gauge/gravity duality and lattice QCD. We will focus on systems which exhibit dynamical symmetry breaking and will cover topics essential for understanding nonperturbative QCD and physics of quark-gluon plasma.

103

Simulation and Theory of Speckle Noise for an Annular Aperture Frequency-Modulation Differential-Absorption LIDAR (FM-DIAL) System  

Science Conference Proceedings (OSTI)

This paper presents theory of speckle noise for a frequency-modulation differential-absorption LIDAR system along with simulation results. These results show an unexpected relationship between the signal-to-noise ratio (SNR) of the speckle and the distance to the retro-reflector or target. In simulation, the use of an annular aperture in the system results in a higher SNR at midrange distances than at short or long distances. This peak in SNR occurs in the region where the lasers Gaussian beam profile approximately fills the target. This was unexpected since it does not occur in the theory or simulations of the same system with a circular aperture. By including the autocorrelation of this annular aperture and expanding the complex correlation factor used in speckle models to include conditions not generally covered, a more complete theoretical model is derived for this system. Obscuration of the center of the beam at near distances is also a major factor in this relationship between SNR and distance. We conclude by comparing the resulting SNR as a function of distance from this expanded theoretical model to the simulations of the system over a double-pass horizontal range of 10 meters to 10 km at a wavelength of 1.28 micrometers

Keller, Paul E.; Batdorf, Michael T.; Strasburg, Jana D.; Harper, Warren W.

2009-05-28T23:59:59.000Z

104

Biochemical Production of Ethanol from Corn Stover: 2008 State...  

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

10-46214 August 2009 Biochemical Production of Ethanol from Corn Stover: 2008 State of Technology Model D. Humbird and A. Aden National Renewable Energy Laboratory 1617 Cole...

105

Modeling Tomorrow's Biorefinery--the NREL Biochemical Pilot Plant  

DOE Green Energy (OSTI)

Brochure describing the capabilities of NREL's Biochemical Pilot Plant. In this facility, researchers test ideas for creating high-value products from cellulosic biomass.

Not Available

2008-03-01T23:59:59.000Z

106

Quantum Field Theory and Representation Theory  

E-Print Network (OSTI)

Quantum Field Theory and Representation Theory Peter Woit woit@math.columbia.edu Department of Mathematics Columbia University Quantum Field Theory and Representation Theory ­ p.1 #12;Outline of the talk · Quantum Mechanics and Representation Theory: Some History Quantum Field Theory and Representation Theory

Woit, Peter

107

Complex higher order derivative theories  

SciTech Connect

In this work is considered a complex scalar field theory with higher order derivative terms and interactions. A procedure is developed to quantize consistently this system avoiding the presence of negative norm states. In order to achieve this goal the original real scalar high order field theory is extended to a complex space attaching a complex total derivative to the theory. Next, by imposing reality conditions the complex theory is mapped to a pair of interacting real scalar field theories without the presence of higher derivative terms.

Margalli, Carlos A.; Vergara, J. David [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico 04510 DF (Mexico)

2012-08-24T23:59:59.000Z

108

Open Chemical Systems Theory and Its Implications to Darwinian Evolutionary Dynamics, Complex Self-Organization and Beyond  

E-Print Network (OSTI)

The study of biological cells as a nonequilibrium, nonlinear, stochastic open chemical systems provides a paradigm for other complex, self-organizing systems with short-time deterministic and long-time evolutionary dynamics.

Qian, Hong

2012-01-01T23:59:59.000Z

109

In Theory  

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

5, 1998 5, 1998 Number 11 For every fundamental particle, the theory of supersymmetry proposes a supersymmetric partner, a "sparticle" in SUSY jargon. The electron, e, for example, has a SUSY spartner, the selectron ~ e. Would every Fermilab theorist have a SUSY "stheorist"? Probably not, but theorists worldwide will be watching Tevatron Run II for the first experimental evidence for SUSY. In Theory f INSIDE 2 Supersymmetry 7 Supersymmetry Workshop 8 MiniBooNE 10 Fishing 12 Paperless Papers 14 CDF Party The Fermilab Stheory Group ~ The Fermilab Theory Group by Meher Antia Without resorting to tricky mathematics or exotic physics, anyone can see that much of the stuff the world is made of has mass. Things can be touched and felt; they have some bulk, unlike, say, light which is intangible and

110

PP Theory  

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

Present Theory of Present Theory of Fundamental Particles and Forces An Article Written Originally for Midlevel Teachers Back Before World War II, it was known that the nucleus was composed of closely packed protons and neutrons, but little was known about the "strong force" that kept them together. From 1950 to 1970, accelerators were built which were designed to probe nuclei with higher speed and more energetic, charged particles such as electrons and protons. The result was that hundreds of new particles were discovered and their properties defined. In 1963, a theory was proposed that a major group of these particles, called hadrons, could be thought of as made from a few, more fundamental particles, called quarks. Protons and neutrons are members of the hadron

111

Multiple capillary biochemical analyzer with barrier member  

DOE Patents (OSTI)

A multiple capillary biochemical analyzer for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal to noise ratio.

Dovichi, Norman J. (Edmonton, CA); Zhang, Jian Z. (Edmonton, CA)

1996-01-01T23:59:59.000Z

112

Multiple capillary biochemical analyzer with barrier member  

DOE Patents (OSTI)

A multiple capillary biochemical analyzer is disclosed for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal-to-noise ratio. 12 figs.

Dovichi, N.J.; Zhang, J.Z.

1996-10-22T23:59:59.000Z

113

Proceedings of the 3rd International Conference on Application and Theory of Automation in Command and Control Systems  

Science Conference Proceedings (OSTI)

Technological and operational developments in Air Traffic Management (ATM) are more based on industrial and national interests than on a consensus approaches. This contributes to the lack of cohesion and interoperability of the ATM system and tends to ...

Antonio Moccia, Alberto Pasquini, Eduardo Garcia

2013-05-01T23:59:59.000Z

114

Transition dynamics between the multiple steady states in natural ventilation systems : from theories to applications in optimal controls  

E-Print Network (OSTI)

In this study, we investigated the multiple steady state behavior, an important observation in numerical and experimental studies in natural ventilation systems. The-oretical models are developed and their applications in ...

Yuan, Jinchao

2007-01-01T23:59:59.000Z

115

Simulation of biochemical networks using COPASI: a complex pathway simulator  

Science Conference Proceedings (OSTI)

Simulation and modeling is becoming one of the standard approaches to understand complex biochemical processes. Therefore, there is a big need for software tools that allow access to diverse simulation and modeling methods as well as support for the ...

Sven Sahle; Ralph Gauges; Jrgen Pahle; Natalia Simus; Ursula Kummer; Stefan Hoops; Christine Lee; Mudita Singhal; Liang Xu; Pedro Mendes

2006-12-01T23:59:59.000Z

116

Generalized Stability Theory. Part I: Autonomous Operators  

Science Conference Proceedings (OSTI)

Classical stability theory is extended to include transient growth processes. The central role of the nonnormality of the linearized dynamical system in the stability problem is emphasized, and a generalized stability theory is constructed that ...

Brian F. Farrell; Petros J. Ioannou

1996-07-01T23:59:59.000Z

117

Just-in-Time Learning Theory-Based Study on the Dynamic Model of Fuel Cell Engine System  

Science Conference Proceedings (OSTI)

Fuel cell car is characterized by zero pollution, high efficiency, low noise and the like. For component selection and control strategy development of fuel cell car, computer simulation is the most common method being adopted. In this paper, the acquisition ... Keywords: fuel cell, CAN, USB, just-in-time learning, system identification

Su Chuqi; Lin Xiang

2009-10-01T23:59:59.000Z

118

Coarse-graining stochastic biochemical networks: quasi-stationary approximation and fast simulations using a stochastic path integral technique  

E-Print Network (OSTI)

We propose a universal approach for analysis and fast simulations of stiff stochastic biochemical kinetics networks, which rests on elimination of fast chemical species without a loss of information about mesoscopic, non-Poissonian fluctuations of the slow ones. Our approach, which is similar to the Born-Oppenheimer approximation in quantum mechanics, follows from the stochastic path integral representation of the full counting statistics of reaction events (also known as the cumulant generating function). In applications with a small number of chemical reactions, this approach produces analytical expressions for moments of chemical fluxes between slow variables. This allows for a low-dimensional, interpretable representation of the biochemical system, that can be used for coarse-grained numerical simulation schemes with a small computational complexity and yet high accuracy. As an example, we consider a chain of biochemical reactions, derive its coarse-grained description, and show that the Gillespie simulat...

Sinitsyn, N A; Nemenman, Ilya

2009-01-01T23:59:59.000Z

119

Theory and Software  

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

Theory and Software Home People Science Highlights Publications Seminars & Meetings Opportunities Advisory Committee Theory and Software Group (X-ray Science Division) The Theory...

120

Scalable implementations of accurate excited-state coupled cluster theories: application of high-level methods to porphyrin based systems  

Science Conference Proceedings (OSTI)

The development of reliable tools for excited-state simulations is emerging as an extremely powerful computational chemistry tool for understanding complex processes in the broad class of light harvesting systems and optoelectronic devices. Over the last years we have been developing equation of motion coupled cluster (EOMCC) methods capable of tackling these problems. In this paper we discuss the parallel performance of EOMCC codes which provide accurate description of the excited-state correlation effects. Two aspects are discuss in details: (1) a new algorithm for the iterative EOMCC methods based on the novel task scheduling algorithms, and (2) parallel algorithms for the non-iterative methods describing the effect of triply excited configurations. We demonstrate that the most computationally intensive non-iterative part can take advantage of 210,000 cores of the Cray XT5 system at OLCF. In particular, we demonstrate the importance of non-iterative many-body methods for achieving experimental level of accuracy for several porphyrin-based system.

Kowalski, Karol; Krishnamoorthy, Sriram; Olson, Ryan M.; Tipparaju, Vinod; Apra, Edoardo

2011-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #20, July-September 2008  

SciTech Connect

July to September, 2008 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D. J.

2008-12-01T23:59:59.000Z

122

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #22, January - March 2009  

Science Conference Proceedings (OSTI)

January to March, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Not Available

2009-04-01T23:59:59.000Z

123

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #23, April-June 2009  

DOE Green Energy (OSTI)

April to June, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2009-08-01T23:59:59.000Z

124

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #17, October-December 2007  

DOE Green Energy (OSTI)

October to December, 2007 edition of the newsletter of the Biochemical Platform Process Integration project.

Schell, D.

2008-01-01T23:59:59.000Z

125

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #24, July-September 2009  

DOE Green Energy (OSTI)

July to September, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2009-10-01T23:59:59.000Z

126

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #25, October - December 2009  

DOE Green Energy (OSTI)

October to December, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2010-01-01T23:59:59.000Z

127

Method and apparatus for energy efficient self-aeration in chemical, biochemical, and wastewater treatment processes  

DOE Patents (OSTI)

The present invention is a pulse spilling self-aerator (PSSA) that has the potential to greatly lower the installation, operation, and maintenance cost associated with aerating and mixing aqueous solutions. Currently, large quantities of low-pressure air are required in aeration systems to support many biochemical production processes and wastewater treatment plants. Oxygen is traditionally supplied and mixed by a compressor or blower and a mechanical agitator. These systems have high-energy requirements and high installation and maintenance costs. The PSSA provides a mixing and aeration capability that can increase operational efficiency and reduce overall cost.

Gao, Johnway [Richland, WA; Skeen, Rodney S [Pendleton, OR

2002-05-28T23:59:59.000Z

128

Modeling Tomorrow's Biorefinery - the NREL Biochemical Pilot Plant; Biomass Program (Brochure)  

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

great ideas into viable solutions great ideas into viable solutions requires the ability to test theories under real world conditions. Few companies have the resources to build pilot-scale processing plants to test their ideas. The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) helps by sharing its world-class equipment and expertise with industry and other research organizations through a variety of contractual arrangements. At the NREL campus in Golden, Colo., researchers use state-of-the-art laboratories to develop and improve the technologies that convert biomass to fuels, chemicals, and materials. One of the most important tools available to biomass researchers is the Biochemical Pilot Plant housed in the Alternative Fuels User Facility (AFUF). In this facility,

129

Application And Evaluation Of Biomagnetic And Biochemical Monitoring Of The  

Open Energy Info (EERE)

Evaluation Of Biomagnetic And Biochemical Monitoring Of The Evaluation Of Biomagnetic And Biochemical Monitoring Of The Dispersion And Deposition Of Volcanically-Derived Particles At Mt Etna, Italy Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Application And Evaluation Of Biomagnetic And Biochemical Monitoring Of The Dispersion And Deposition Of Volcanically-Derived Particles At Mt Etna, Italy Details Activities (0) Areas (0) Regions (0) Abstract: Biomagnetic monitoring, using tree leaves as passive surfaces for particle collection, has been shown to be a promising technique for assessing the dispersion and deposition of particles in the context of anthropogenic pollution. By comparing leaves' magnetic properties with trace metal levels measured in the leaves, we here assess the utility of

130

Materials Theory, Modeling and Simulation | ORNL  

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

Functional Materials for Energy Chemistry and Physics at Interfaces Materials Synthesis from Atoms to Systems Materials Characterization Materials Theory and Simulation Quantum...

131

Salinas : theory manual.  

Science Conference Proceedings (OSTI)

Salinas provides a massively parallel implementation of structural dynamics finite element analysis, required for high fidelity, validated models used in modal, vibration, static and shock analysis of structural systems. This manual describes the theory behind many of the constructs in Salinas. For a more detailed description of how to use Salinas, we refer the reader to Salinas, User's Notes. Many of the constructs in Salinas are pulled directly from published material. Where possible, these materials are referenced herein. However, certain functions in Salinas are specific to our implementation. We try to be far more complete in those areas. The theory manual was developed from several sources including general notes, a programmer notes manual, the user's notes and of course the material in the open literature.

Walsh, Timothy Francis; Reese, Garth M.; Bhardwaj, Manoj Kumar

2011-11-01T23:59:59.000Z

132

Extracting biochemical reaction kinetics from time series data  

E-Print Network (OSTI)

Abstract. We consider the problem of inferring kinetic mechanisms for biochemical reactions from time series data. Using a priori knowledge about the structure of chemical reaction kinetics we develop global nonlinear models which use elementary reactions as a basis set, and discuss model construction using top-down and bottom-up approaches. 1

Edmund J. Crampin; Patrick E. Mcsharry; Santiago Schnell

2004-01-01T23:59:59.000Z

133

Advanced biochemical processes for geothermal brines FY 1998 annual operating plan  

DOE Green Energy (OSTI)

As part of the overall Geothermal Energy Research which is aimed at the development of economical geothermal resources production systems, the aim of the Advanced Biochemical Processes for Geothermal Brines (ABPGB) effort is the development of economic and environmentally acceptable methods for disposal of geothermal wastes and conversion of by-products to useful forms. Methods are being developed for dissolution, separation and immobilization of geothermal wastes suitable for disposal, usable in inert construction materials, suitable for reinjection into the reservoir formation, or used for recovery of valuable metals.

NONE

1997-10-01T23:59:59.000Z

134

Characterization and application of vortex flow adsorption for simplification of biochemical product downstream processing  

E-Print Network (OSTI)

One strategy to reduce costs in manufacturing a biochemical product is simplification of downstream processing. Biochemical product recovery often starts from fermentation broth or cell culture. In conventional downstream ...

Ma, Junfen, 1972-

2003-01-01T23:59:59.000Z

135

BNL | CFN: Theory & Computation  

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

Theory and Computation Contact: Mark Hybertsen Advances in theory, numerical algorithms and computational capabilities have enabled an unprecedented opportunity for fundamental...

136

Grand Unified Theory  

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

Grand Unified Theory Ungelste Rtsel Grand Unified Theory Heute besteht eines der Hauptziele der Teilchenphysik darin, die verschiedenen fundamentalen Krfte in einer Grossen...

137

String (Faden) Theorie  

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

String Theory Ungelste Rtsel String (Faden) Theorie Die heutige Physik kennt gute Theorien wie Quantenmechanik, Relativittstheorie und Gravitation. Aber diese Theorien passen...

138

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #13, October-December 2006  

DOE Green Energy (OSTI)

Volume 13 of a quarterly newsletter that describes the activities of the National Bioenergy Center's Biochemical Processing Integration Task.

Schell, D. J.

2007-01-01T23:59:59.000Z

139

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #21, October - December 2008  

SciTech Connect

October to December, 2008 edition of the National Bioenergy Center?s Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2009-01-01T23:59:59.000Z

140

National Bioenergy Center Biochemical Platform Process Integration Project: Quarterly Update #18, January-March 2008  

DOE Green Energy (OSTI)

January-March, 2008 edition of the quarterly update for the National Bioenergy Center's Biochemical Platform Integration Project.

Schell, D.

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #14, January - March 2007  

DOE Green Energy (OSTI)

Volume 14 of a quarterly newsletter that describes the activities of the National Bioenergy Center's Biochemical Processing Integration Task.

Schell, D.

2007-04-01T23:59:59.000Z

142

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #24, July-September 2009  

SciTech Connect

July to September, 2009 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter.

Schell, D.

2009-10-01T23:59:59.000Z

143

Generalized Stability Theory. Part II: Nonautonomous Operators  

Science Conference Proceedings (OSTI)

An extension of classical stability theory to address the stability of perturbations to time-dependent systems is described. Nonnormality is found to play a central role in determining the stability of systems governed by nonautonomous operators ...

Brian F. Farrell; Petros J. Ioannou

1996-07-01T23:59:59.000Z

144

1 String field theory  

E-Print Network (OSTI)

This elementary introduction to string field theory highlights the features and the limitations of this approach to quantum gravity as it is currently understood. String field theory is a formulation of string theory as a field theory in space-time with an infinite number of massive fields. Although existing constructions of string field theory require expanding around a fixed choice of space-time background, the theory is in principle background-independent, in the sense that different backgrounds can be realized as different field configurations in the theory. String field theory is the only string formalism developed so far which, in principle, has the potential to systematically address questions involving multiple asymptotically distinct string backgrounds. Thus, although it is not yet well defined as a quantum theory, string field theory may eventually be helpful for understanding questions related to cosmology in string theory. 1.1

W. Taylor

2006-01-01T23:59:59.000Z

145

Use of the electrically-driven emulsion phase contactor in chemical and biochemical processing  

DOE Green Energy (OSTI)

An electrically driven liquid-liquid contactor has been developed to enhance the efficiency of chemical and biochemical processes. A uniform electric field is utilized to induce a drop dispersion- coalescence cycle, producing high surface area for interfacial mass transfer under continuous-countercurrent-flow conditions. The mass- transport capability of this system has been analyzed by observing the extraction of acetic acid from water (dispersed phase) into methyl isobutyl ketone. Results showed that, due to increased efficiency of mass transfer, the electrically-driven device could be an order of magnitude smaller than a conventional contactor accomplishing the same level of separation. In the case of biochemical processes within non-aqueous environments, a biocatalyst (enzymes or bacteria) is introduced in the aqueous (dispersed) phase. The biocatalyst uses nutrients and other reactants to selectively transform species transferred from the continuous (organic) phase to the interior of the drops. An example of such system that has been investigated is the oxidation of p-cresol dissolved in toluene by aqueous-phase horseradish peroxidase.

Tsouris, C; DePaoli, D.W.; Scott, T.C.

1995-12-31T23:59:59.000Z

146

Control of Noise in Chemical and Biochemical Information Processing  

E-Print Network (OSTI)

We review models and approaches for error-control in order to prevent the buildup of noise when gates for digital chemical and biomolecular computing based on (bio)chemical reaction processes are utilized to realize stable, scalable networks for information processing. Solvable rate-equation models illustrate several recently developed methodologies for gate-function optimization. We also survey future challenges and possible new research avenues.

Vladimir Privman

2010-10-09T23:59:59.000Z

147

Plasma Kinetic Theory  

Science Conference Proceedings (OSTI)

Kinetic Theory / Proceedings of the Ninth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

B. Weyssow

148

Theory decision by decomposition  

Science Conference Proceedings (OSTI)

The topic of this article is decision procedures for satisfiability modulo theories (SMT) of arbitrary quantifier-free formulae. We propose an approach that decomposes the formula in such a way that its definitional part, including the theory, can be ... Keywords: Automated theorem proving: Rewriting, superposition, paramodulation, Satisfiability modulo theories: Decision procedures, combination of theories

Maria Paola Bonacina; Mnacho Echenim

2010-02-01T23:59:59.000Z

149

Model Theory and Quantum  

E-Print Network (OSTI)

Model Theory and Quantum Groups Sonia L'Innocente Model Theory and Quantum Groups Sonia L'Innocente (University of Mons) Model Theory and Quantum Groups 1 / 40 #12;Model Theory and Quantum Groups Sonia L quantum plane, submitted. This work is inspired by Ivo Herzog's paper: The pseudo-finite dimensional

Mons-Hainaut, Université de

150

Foundations of quantum theory and thermodynamics  

Science Conference Proceedings (OSTI)

Physical reasons to support the statement that Quantum theory (Quantum Gravity in particular as well as Classical Gravity) loose applicability due to Thermodynamical effects are presented. The statement is based on several points: 1. N.Bohr requirement that measuring units must have macro size is one of common fundamentals of Quantum theory. 2. The Reference Systemthe base notion of Classical and Quantum theory and of any observation process as well

Victor Olkhov

1998-01-01T23:59:59.000Z

151

Mathematical Reliability Theory: From The Beginning to . . .  

E-Print Network (OSTI)

It is argued that the mathematical theory of reliability as a separate discipline began in 1961 with the publication of Multi-component systems and their structures and their reliability by Birnbaum, Esary and Saunders. Prior to this time, mathematicians were just applying standard mathematical techniques such as queueing theory, statistics and probability to engineering reliability problems. We

Richard E. Barlow

2002-01-01T23:59:59.000Z

152

A computational theory of normative positions  

Science Conference Proceedings (OSTI)

The Kanger-Lindahl theory of normative positions attempts to use a combination of deontic logic (the logic of obligation and permission) and a logic of action/agency to give a formal account of obligations, duties, rights, and other complex normative ... Keywords: deontic logic, logic of action, logic of agency, normative systems, theory of duties and rights

Marek Sergot

2001-10-01T23:59:59.000Z

153

Minority Influence Theory  

E-Print Network (OSTI)

The psychology of social impact. American Psychologist, 36,that later embodied in social impact theory (Latane, 1981)

Nemeth, Charlan Jeanne

2010-01-01T23:59:59.000Z

154

Plasma Kinetic Theory  

Science Conference Proceedings (OSTI)

Basic and Kinetic Theory / Proceedings of the Tenth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

B. Weyssow

155

Quantum Physics Theory  

Science Conference Proceedings (OSTI)

Quantum Physics Theory. Summary: Theoretical work ... constant. The database is available at http://physics.nist.gov/hdel. Precise ...

2010-10-05T23:59:59.000Z

156

Coarse-graining stochastic biochemical networks: adiabaticity and fast simulations  

SciTech Connect

We propose a universal approach for analysis and fast simulations of stiff stochastic biochemical kinetics networks, which rests on elimination of fast chemical species without a loss of information about mesoscoplc, non-Poissonian fluctuations of the slow ones. Our approach, which is similar to the Born-Oppenhelmer approximation in quantum mechanics, follows from the stochastic path Integral representation of the cumulant generating function of reaction events. In applications with a small number of chemIcal reactions, It produces analytical expressions for cumulants of chemical fluxes between the slow variables. This allows for a low-dimensional, Interpretable representation and can be used for coarse-grained numerical simulation schemes with a small computational complexity and yet high accuracy. As an example, we derive the coarse-grained description for a chain of biochemical reactions, and show that the coarse-grained and the microscopic simulations are in an agreement, but the coarse-gralned simulations are three orders of magnitude faster.

Nemenman, Ilya [Los Alamos National Laboratory; Sinitsyn, Nikolai [Los Alamos National Laboratory; Hengartner, Nick [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

157

Biochemical Conversion Pilot Plant (Fact Sheet), NREL (National Renewable Energy Laboratory)  

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

Biochemical Conversion Biochemical Conversion Pilot Plant A pilot-scale conversion plant for researchers, industry partners, and stakeholders to test a variety of biochemical conversion processes and technologies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. In the biochemical conversion pilot plant, NREL's engineers and scientists focus on all aspects of the efficiency and cost reduction of biochemical conversion processes. Our capabilities accommodate research from bench-scale to pilot-scale (up to one ton per day). NREL's biochemical conversion pilot plant is located in the Integrated Biorefinery Research Facility (IBRF). Photo by Dennis Schroeder, NREL/PIX 20248

158

Evaluating Probabilistic Forecasts Using Information Theory  

Science Conference Proceedings (OSTI)

The problem of assessing the quality of an operational forecasting system that produces probabilistic forecasts is addressed using information theory. A measure of the quality of the forecasting scheme, based on the amount of a data compression ...

Mark S. Roulston; Leonard A. Smith

2002-06-01T23:59:59.000Z

159

Measuring Student Learning With Item Response Theory  

E-Print Network (OSTI)

We investigate short-term learning from hints and feedback in a Web-based physics tutoring system. Both the skill of students and the difficulty and discrimination of items were determined by applying item response theory ...

Lee, Young-Jin

160

Free Field Theory as a String Theory?  

E-Print Network (OSTI)

An approach to systematically implement open-closed string duality for free large $N$ gauge theories is summarised. We show how the relevant closed string moduli space emerges from a reorganisation of the Feynman diagrams contributing to free field correlators. We also indicate why the resulting integrand on moduli space has the right features to be that of a string theory on $AdS$.

Rajesh Gopakumar

2004-09-23T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Algorithmic information theory  

E-Print Network (OSTI)

We introduce algorithmic information theory, also known as the theory of Kolmogorov complexity. We explain the main concepts of this quantitative approach to defining `information'. We discuss the extent to which Kolmogorov's and Shannon's information theory have a common purpose, and where they are fundamentally different. We indicate how recent developments within the theory allow one to formally distinguish between `structural' (meaningful) and `random' information as measured by the Kolmogorov structure function, which leads to a mathematical formalization of Occam's razor in inductive inference. We end by discussing some of the philosophical implications of the theory.

Grunwald, Peter D

2008-01-01T23:59:59.000Z

162

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #16, July-September 2007  

DOE Green Energy (OSTI)

This quarterly update contains information on the National Bioenergy Center Biochemical Platform Integration Project, R&D progress and related activities.

Schell, D.

2007-10-01T23:59:59.000Z

163

Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model  

SciTech Connect

An update to the FY 2005 assessment of the state of technical research progress toward biochemical process goals. This assessment contains research results from 2006 and 2007.

Aden, A.

2008-05-01T23:59:59.000Z

164

Biochemical Production of Ethanol from Corn Stover: 2008 State of Technology Model  

DOE Green Energy (OSTI)

An update to the FY 2007 assessment of the state of technical research progress toward biochemical process goals, quantified in terms of Minimum Ethanol Selling Price.

Humbird, D.; Aden, A.

2009-08-01T23:59:59.000Z

165

National Bioenergy Center Biochemical Platform Process Integration Project: Quarterly Update #18, January-March 2008  

SciTech Connect

January-March, 2008 edition of the quarterly update for the National Bioenergy Center's Biochemical Platform Integration Project.

Schell, D.

2008-04-01T23:59:59.000Z

166

Topological Insulators and Superconductors from String Theory  

E-Print Network (OSTI)

Topological insulators and superconductors in different spatial dimensions and with different discrete symmetries have been fully classified recently, revealing a periodic structure for the pattern of possible types of topological insulators and supercondutors, both in terms of spatial dimensions and in terms of symmetry classes. It was proposed that K-theory is behind the periodicity. On the other hand, D-branes, a solitonic object in string theory, are also known to be classified by K-theory. In this paper, by inspecting low-energy effective field theories realized by two parallel D-branes, we establish a one-to-one correspondence between the K-theory classification of topological insulators/superconductors and D-brane charges. In addition, the string theory realization of topological insulators and superconductors comes naturally with gauge interactions, and the Wess-Zumino term of the D-branes gives rise to a gauge field theory of topological nature, such as ones with the Chern-Simons term or the $\\theta$-term in various dimensions. This sheds light on topological insulators and superconductors beyond non-interacting systems, and the underlying topological field theory description thereof. In particular, our string theory realization includes the honeycomb lattice Kitaev model in two spatial dimensions, and its higher-dimensional extensions. Increasing the number of D-branes naturally leads to a realization of topological insulators and superconductors in terms of holography (AdS/CFT).

Shinsei Ryu; Tadashi Takayanagi

2010-07-24T23:59:59.000Z

167

Microfabricated devices for performing chemical and biochemical analysis  

Science Conference Proceedings (OSTI)

There is growing interest in microfabricated devices that perform chemical and biochemical analysis. The general goal is to use microfabrication tools to construct miniature devices that can perform a complete analysis starting with an unprocessed sample. Such devices have been referred to as lab-on-a-chip devices. Initial efforts on microfluidic laboratory-on-a-chip devices focused on chemical separations. There are many potential applications of these fluidic microchip devices. Some applications such as chemical process control or environmental monitoring would require that a chip be used over an extended period of time or for many analyses. Other applications such as forensics, clinical diagnostics, and genetic diagnostics would employ the chip devices as single use disposable devices.

Ramsey, J.M.; Jacobson, S.C.; Foote, R.S.

1997-05-01T23:59:59.000Z

168

Comparison of biochemical microbial effects in enhanced oil recovery (MEOR)  

Science Conference Proceedings (OSTI)

Experimental data dealing with the interactions between certain microbial species and crude oils indicates that these interactions are selective and occur via biochemical pathways which can be characterized by the chemical composition of the initial crude oil and that of the end products. In the studies discussed in this paper, the microbial species used were thermophilic and/or thermoadapted microorganisms which thrive in harsh environments (e.g., pH, temperature, pressure, salinity). Crude oils chosen for biotreatment represented a wide range of oils, which varied from relatively light oils to heavy, high sulfur content oils. The crude oils used have also been distinguished in terms of their geological history, i.e., heavy, because they are immature or heavy, because they have been biodegraded. The significance of biodegraded'' vs. biotreated'' crude oil in MEOR also discussed.

Premuzic, E.T.; Lin, M.S.; Manowitz, B.

1992-11-01T23:59:59.000Z

169

Comparison of biochemical microbial effects in enhanced oil recovery (MEOR)  

Science Conference Proceedings (OSTI)

Experimental data dealing with the interactions between certain microbial species and crude oils indicates that these interactions are selective and occur via biochemical pathways which can be characterized by the chemical composition of the initial crude oil and that of the end products. In the studies discussed in this paper, the microbial species used were thermophilic and/or thermoadapted microorganisms which thrive in harsh environments (e.g., pH, temperature, pressure, salinity). Crude oils chosen for biotreatment represented a wide range of oils, which varied from relatively light oils to heavy, high sulfur content oils. The crude oils used have also been distinguished in terms of their geological history, i.e., heavy, because they are immature or heavy, because they have been biodegraded. The significance of ``biodegraded`` vs. ``biotreated`` crude oil in MEOR also discussed.

Premuzic, E.T.; Lin, M.S.; Manowitz, B.

1992-11-01T23:59:59.000Z

170

Lectures on String Theory  

E-Print Network (OSTI)

This is a one semester course on bosonic string theory aimed at beginning graduate students. The lectures assume a working knowledge of quantum field theory and general relativity. Contents: 1. The Classical String 2. The Quantum String 3. Open Strings and D-Branes 4. Introducing Conformal Field Theory 5. The Polyakov Path Integral and Ghosts 6. String Interactions 7. The Low-Energy Effective Action 8. Compactification and T-Duality

Tong, David

2009-01-01T23:59:59.000Z

171

Theory Modeling and Simulation  

SciTech Connect

Los Alamos has a long history in theory, modeling and simulation. We focus on multidisciplinary teams that tackle complex problems. Theory, modeling and simulation are tools to solve problems just like an NMR spectrometer, a gas chromatograph or an electron microscope. Problems should be used to define the theoretical tools needed and not the other way around. Best results occur when theory and experiments are working together in a team.

Shlachter, Jack [Los Alamos National Laboratory

2012-08-23T23:59:59.000Z

172

Theory and Software Science  

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

Science Goals The Theory and Software Group connects to the experimental programs at the Advanced Photon Source by the development of theoretical methodologies that provide new...

173

Atomic Theory of Lithium  

Science Conference Proceedings (OSTI)

... polarization-adjusted data were an excellent fit to theory, and the team's results agree with the latest and presumably best theoretical predictions. ...

2011-10-06T23:59:59.000Z

174

Introduction to String Theory  

E-Print Network (OSTI)

The aim of these notes is to give recent developments in string theory. In particular, we discuss the string spectrums, compactifications, brane physics and dualities.

Belhaj, Adil

2008-01-01T23:59:59.000Z

175

QUANTIZATION OF THE GENERAL THEORY OF RELATIVITY  

SciTech Connect

It is possible to quantize most classical field theories by identifying the group of canonical transformations that maintain the covariance properties with a group of unitary transformations in Hilbert space that has the same commutator algebra. The computators among the canonical field variables are equal to the Dirac delta function times a factor that may be zero. But in the general theory of relativity the classical group of the canonical transformations that maintain the covariance properties of the theory has an invariance subgroup. The ambiguities thus introduced by the usual process of quantization can be avoided by the use of the Dirac quantization procedure for theories with constraints. An analogy between classical Dirac brackets and commutators is established, and an intrinsic coordinate system is fixed. This choice of local intrinsic coordinate conditions leads to commutators among the canonical field variables of the general theory of relativity that depend upon the Dirac delta function and its flrst seven derivatives. (auth)

Boardman, J.M.

1962-01-01T23:59:59.000Z

176

A Review of Equipment Aging Theory and Technology  

Science Conference Proceedings (OSTI)

Reviews the theory and technology of equipment aging particularly as they relate to the qualification of safety-system equipment for nuclear power generating stations.

1980-09-01T23:59:59.000Z

177

Hybrid Dynamic Density Functional Theory for Polymer Melts and Blends  

E-Print Network (OSTI)

We propose a high-speed and accurate hybrid dynamic density functional theory for the computer simulations of the phase separation processes of polymer melts and blends. The proposed theory is a combination of the dynamic self-consistent field (SCF) theory and a time-dependent Ginzburg-Landau type theory with the random phase approximation (GRPA). The SCF theory is known to be accurate in evaluating the free energy of the polymer systems in both weak and strong segregation regions although it has a disadvantage of the requirement of a considerable amount of computational cost. On the other hand, the GRPA theory has an advantage of much smaller amount of required computational cost than the SCF theory while its applicability is limited to the weak segregation region. To make the accuracy of the SCF theory and the high-performance of the GRPA theory compatible, we adjust the chemical potential of the GRPA theory by using the SCF theory every constant time steps in the dynamic simulations. The performance of the GRPA and the hybrid theories is tested by using several systems composed of an A/B homopolymer, an AB diblock copolymer, or an ABC triblock copolymer. Using the hybrid theory, we succeeded in reproducing the metastable complex phase-separated domain structures of an ABC triblock copolymer observed by experiments.

Takashi Honda; Toshihiro Kawakatsu

2006-09-05T23:59:59.000Z

178

Application of Biochemical and Physiological Indicators for Assessing Recovery of Fish Populations in a Disturbed Stream  

Science Conference Proceedings (OSTI)

Recovery dynamics in a previously disturbed streamwere investigated to determine the influence of a series of remedial actions on stream recovery and to evaluate the potential application of bioindicators as an environmental management tool. A suite of bioindicators, representing five different functional response groups, were measured annually for a sentinel fish species over a 15 year period during which a variety of remedial and pollution abatement actions were implemented. Trends in biochemical, physiological, condition, growth, bioenergetic, and nutritional responses demonstrated that the health status of a sentinel fish species in the disturbed stream approached that of fish in the reference stream by the end of the study. Two major remedial actions, dechlorination and water flow management, had large effects on stream recovery resulting in an improvement in the bioenergetic, disease, nutritional, and organ condition status of the sentinel fish species. A subset of bioindicators responded rather dramatically to temporal trends affecting all sites, but some indicators showed little response to disturbance or to restoration activities. In assessing recovery of aquatic systems, application of appropriate integrative structural indices along with a variety of sensitive functional bioindicators should be used to understand the mechanistic basis of stress and recovery and to reduce the risk of false positives. Understanding the mechanistic processes involved between stressors, stress responses of biota, and the recovery dynamics of aquatic systems reduces the uncertainty involved in environmental management and regulatory decisions resulting in an increased ability to predict the consequences of restoration and remedial actions for aquatic systems.

Adams, Marshall [ORNL; Ham, Kenneth [ORNL

2011-01-01T23:59:59.000Z

179

Application of Biochemical and Physiological Indicators for Assessing Recovery of Fish Populations in a Disturbed Stream  

Science Conference Proceedings (OSTI)

Recovery dynamics in a previously disturbed streamwere investigated to determine the influence of a series of remedial actions on stream recovery and to evaluate the potential application of bioindicators as an environmental management tool. A suite of bioindicators, representing five different functional response groups, were measured annually for a sentinel fish species over a 15 year period during which a variety of remedial and pollution abatement actions were implemented. Trends in biochemical, physiological, condition, growth, bioenergetic, and nutritional responses demonstrated that the health status of a sentinel fish species in the disturbed stream approached that of fish in the reference stream by the end of the study. Two major remedial actions, dechlorination and water flow management, had large effects on stream recovery resulting in an improvement in the bioenergetic, disease, nutritional, and organ condition status of the sentinel fish species. A subset of bioindicators responded rather dramatically to temporal trends affecting all sites, but some indicators showed little response to disturbance or to restoration activities. In assessing recovery of aquatic systems, application of appropriate integrative structural indices along with a variety of sensitive functional bioindicators should be used to understand the mechanistic basis of stress and recovery and to reduce the risk of false positives. Understanding the mechanistic processes involved between stressors, stress responses of biota, and the recovery dynamics of aquatic systems reduces the uncertainty involved in environmental management and regulatory decisions resulting in an increased ability to predict the consequences of restoration and remedial actions for aquatic systems.

Adams, S. M.; Ham, Kenneth D.

2011-06-01T23:59:59.000Z

180

Introduction to string theory and conformal field theory  

Science Conference Proceedings (OSTI)

A concise survey of noncritical string theory and two-dimensional conformal field theory is presented. A detailed derivation of a conformal anomaly and the definition and general properties of conformal field theory are given. Minimal string theory, which is a special version of the theory, is considered. Expressions for the string susceptibility and gravitational dimensions are derived.

Belavin, A. A., E-mail: belavin@itp.ac.ru; Tarnopolsky, G. M., E-mail: Hetzif@yandex.r [Russian Academy of Sciences, Landau Institute for Theoretical Physics (Russian Federation)

2010-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Scalable implementations of accurate excited-state coupled cluster theories: application of high-level methods to porphyrin-based systems  

Science Conference Proceedings (OSTI)

The development of reliable tools for excited-state simulations is very important for understanding complex processes in the broad class of light harvesting systems and optoelectronic devices. Over the last years we have been developing equation of motion ...

Karol Kowalski; Sriram Krishnamoorthy; Ryan M. Olson; Vinod Tipparaju; E. Apr

2011-11-01T23:59:59.000Z

182

Formulating Quantum Theory as a Causally Neutral Theory of Bayesian Inference  

E-Print Network (OSTI)

Quantum theory can be viewed as a generalization of classical probability theory, but the analogy as it has been developed so far is not complete. Classical probability theory is independent of causal structure, whereas the conventional quantum formalism requires causal structure to be fixed in advance. In this paper, we develop the formalism of quantum conditional states, which unifies the description of experiments involving two systems at a single time with the description of those involving a single system at two times. The analogies between quantum theory and classical probability theory are expressed succinctly within the formalism and it unifies the mathematical description of distinct concepts, such as ensemble preparation procedures, measurements, and quantum dynamics. We introduce a quantum generalization of Bayes' theorem and the associated notion of Bayesian conditioning. Conditioning a quantum state on a classical variable is the correct rule for updating quantum states in light of classical data...

Leifer, M S

2011-01-01T23:59:59.000Z

183

The web of system performance  

Science Conference Proceedings (OSTI)

Because information system performance is multidimensional, specialist theories of performance dimensions must be integrated into a model of system design.

Brian Whitworth; Jerry Fjermestad; Edward Mahinda

2006-05-01T23:59:59.000Z

184

Optimal control for biological movement systems  

E-Print Network (OSTI)

of hierarchical control system (results obtained afterthe greatest discovery in control and systems theory of theloop Control System. . . . . . . . . . . . . . . . . . . 10

Li, Weiwei

2006-01-01T23:59:59.000Z

185

Fundamental constants in effective theory  

E-Print Network (OSTI)

There is a discussion between L. B. Okun, G. Veneziano and M. J. Duff, concerning the number of fundamental dimensionful constants in physics [1]. They advocated correspondingly 3, 2 and 0 fundamental constants. Here we consider this problem on example of the effective relativistic quantum field theory, which emerges in the low energy corner of quantum liquids and which reproduces many features of our physics including chiral fermions, gauge fields and dynamical gravity. 1 Introduction. The effective relativistic quantum field theory (RQFT) arising as emergent phenomenon in quantum liquids [2], or in other condensed matter systems [3], allows us to look at the problem of fundamental constants from the outside, i.e. from the point of view of an external observer who does not

G. E. Volovik

2008-01-01T23:59:59.000Z

186

Advanced biochemical processes for geothermal brines current developments  

DOE Green Energy (OSTI)

A research program at Brookhaven National Laboratory (BNL) which deals with the development and application of processes for the treatment of geothermal brines and sludges has led to the identification and design of cost-efficient and environmentally friendly treatment methodology. Initially the primary goal of the processing was to convert geothermal wastes into disposable materials whose chemical composition would satisfy environmental regulations. An expansion of the R&D effort allowed to identify a combination of biochemical and chemical processes which became a basis for the development of a technology for the treatment of geothermal brines and sludges. The new technology satisfies environmental regulatory requirements and concurrently converts the geothermal brines and sludges into commercially promising products. Because the chemical composition of geothermal wastes depends on the type of the resource and therefore differs, the emerging technology has to be also flexible so that it can be readily modified to suit the needs of a particular type of resource. Recent conceptional designs for the processing of hypersaline and low salinity brines and sludges will be discussed.

Premuzic, E.T.; Lin, M.S.; Bohenek, M.

1997-03-10T23:59:59.000Z

187

Advanced biochemical processes for geothermal brines: Current developments  

DOE Green Energy (OSTI)

A research program at Brookhaven National Laboratory (BNL) which deals with the development and application of processes for the treatment of geothermal brines and sludges has led to the identification and design of cost-efficient and environmentally friendly treatment methodology. Initially the primary goal of the processing was to convert geothermal wastes into disposable materials whose chemical composition would satisfy environmental regulations. An expansion of the r and D effort identified a combination of biochemical and chemical processes which became the basis for the development of a technology for the treatment of geothermal brines and sludges. The new technology satisfies environmental regulatory requirements and concurrently converts the geothermal brines and sludges into commercially promising products. Because the chemical composition of geothermal wastes depends on the type of the resource, the emerging technology has to be flexible so that it can be readily modified to suit the needs of a particular type of resource. Recent conceptional designs for the processing of hypersaline and low salinity brines and sludges will be discussed.

Premuzic, E.T.; Lin, M.S.; Bohenek, M. [Brookhaven National Lab., Upton, NY (United States). Energy Science and Technology Div.; Bajsarowicz, V. [CET Environmental Services, Inc., Richmond, CA (United States); McCloud, M. [C.E. Holt/California Energy, Pasadena, CA (United States)

1997-07-07T23:59:59.000Z

188

Dirac Kirchhoff diffraction theory  

E-Print Network (OSTI)

Kirchhoff's scalar diffraction theory is applied throughout photon and electron optics. It is based on the stationary electromagnetic or Schr\\"odinger wave equation, and is useful in describing interference phenomena for both light and matter waves. Here, Kirchhoff's diffraction theory is derived from the relativistic Dirac equation, thus reformulated to work on Dirac spinors. The parallels with the "classic" scalar theory are highlighted, and a basic interpretation of the result obtained for the Fraunhofer diffraction limit is given. The goal of this paper is to emphasize the similarity between the two equations on the most fundamental level.

Ruben Van Boxem; Bart Partoens; Jo Verbeeck

2013-03-05T23:59:59.000Z

189

Dirac Kirchhoff diffraction theory  

E-Print Network (OSTI)

Kirchhoff's scalar diffraction theory is applied throughout photon and electron optics. It is based on the stationary electromagnetic or Schr\\"odinger wave equation, and is useful in describing interference phenomena for both light and matter waves. Here, Kirchhoff's diffraction theory is derived from the relativistic Dirac equation, thus reformulated to work on Dirac spinors. The parallels with the "classic" scalar theory are highlighted, and a basic interpretation of the result obtained for the Fraunhofer diffraction limit is given. The goal of this paper is to emphasize the similarity between the two equations on the most fundamental level.

Van Boxem, Ruben; Verbeeck, Jo

2013-01-01T23:59:59.000Z

190

Method for detection of long-lived radioisotopes in small biochemical samples  

DOE Patents (OSTI)

Disclosed is a method for detection of long-lived radioisotopes in small bio-chemical samples, comprising: a. selecting a biological host in which radioisotopes are present in concentrations equal to or less than those in the ambient biosphere, b. preparing a long-lived radioisotope labeled reactive chemical specie, c. administering said chemical specie to said biologist host in doses sufficiently low to avoid significant overt damage to the biological system thereof, d. allowing a period of time to elapse sufficient for dissemination and interaction of said chemical specie with said host throughout said biological system of said host, e. isolating a reacted fraction of the biological substance from said host in a manner sufficient to avoid contamination of said substance from extraneous sources, f. converting said fraction of biological substance by suitable means to a material which efficiently produces charged ions in at least one of several possible ion sources without introduction of significant isotopic fractionation, and, g. measuring the radioisotope concentration in said material by means of direct isotopic counting.

Turteltaub, Kenneth W. (Livermore, CA); Vogel, John S. (Union City, CA); Felton, James S. (Danville, CA); Gledhill, Barton L. (Alamo, CA); Davis, Jay C. (Livermore, CA)

1994-01-01T23:59:59.000Z

191

Method for detection of long-lived radioisotopes in small biochemical samples  

DOE Patents (OSTI)

Disclosed is a method for detection of long-lived radioisotopes in small biochemical samples, comprising: a. selecting a biological host in which radioisotopes are present in concentrations equal to or less than those in the ambient biosphere, b. preparing a long-lived radioisotope labeled reactive chemical specie, c. administering the chemical specie to the biologist host in doses sufficiently low to avoid significant overt damage to the biological system, d. allowing a period of time to elapse sufficient for dissemination and interaction of the chemical specie with the host throughout the biological system of the host, e. isolating a reacted fraction of the biological substance from the host in a manner sufficient to avoid contamination of the substance from extraneous sources, f. converting the fraction of biological substance by suitable means to a material which efficiently produces charged ions in at least one of several possible ion sources without introduction of significant isotopic fractionation, and, g. measuring the radioisotope concentration in the material by means of direct isotopic counting. 5 figs.

Turteltaub, K.W.; Vogel, J.S.; Felton, J.S.; Gledhill, B.L.; Davis, J.C.

1994-11-22T23:59:59.000Z

192

Mutational and Biochemical Analysis of the DNA-entry Nuclease EndA from Streptococcus pneumoniae  

Science Conference Proceedings (OSTI)

EndA is a membrane-attached surface-exposed DNA-entry nuclease previously known to be required for genetic transformation of Streptococcus pneumoniae. More recent studies have shown that the enzyme also plays an important role during the establishment of invasive infections by degrading extracellular chromatin in the form of neutrophil extracellular traps (NETs), enabling streptococci to overcome the innate immune system in mammals. As a virulence factor, EndA has become an interesting target for future drug design. Here we present the first mutational and biochemical analysis of recombinant forms of EndA produced either in a cell-free expression system or in Escherichia coli. We identify His160 and Asn191 to be essential for catalysis and Asn182 to be required for stability of EndA. The role of His160 as the putative general base in the catalytic mechanism is supported by chemical rescue of the H160A variant of EndA with imidazole added in excess. Our study paves the way for the identification and development of protein or low-molecular-weight inhibitors for EndA in future high-throughput screening assays.

M Midon; P Schafer; A Pingoud; M Ghosh; A Moon; M Cuneo; R London; G Meiss

2011-12-31T23:59:59.000Z

193

Urban organizational systems  

E-Print Network (OSTI)

General systems theory provides a conceptual framework for the integration of knowledge from a wide variety of specialized fields. Systems theory serves to synthesize, reconcile, and integrate knowledge making it possible ...

Morog, Joseph V

1981-01-01T23:59:59.000Z

194

National Bioenergy Center, Biochemical Platform Integration Project: Quarterly Update, Winter 2011-2012 (Newsletter)  

DOE Green Energy (OSTI)

Winter 2011-2012 issue of the National Bioenergy Center Biochemical Platform Integration Project quarterly update. Issue topics: 34th Symposium on Biotechnology for Fuels and Chemicals; feasibility of NIR spectroscopy-based rapid feedstock reactive screening; demonstrating integrated pilot-scale biomass conversion. The Biochemical Process Integration Task focuses on integrating the processing steps in enzyme-based lignocellulose conversion technology. This project supports the U.S. Department of Energy's efforts to foster development, demonstration, and deployment of 'biochemical platform' biorefineries that economically produce ethanol or other fuels, as well as commodity sugars and a variety of other chemical products, from renewable lignocellulosic biomass.

Not Available

2012-04-01T23:59:59.000Z

195

RETRAN-3DA Program for Transient Thermal-Hydraulic Analysis of Complex Fluid Flow Systems: Volume 1: Theory and Numerics (Rev ision 3)  

Science Conference Proceedings (OSTI)

RETRAN-02 has proven to be a versatile and reliable computer program for use in best-estimate transient thermal-hydraulic analysis of light water reactor systems. The RETRAN-3D computer program is an extension of the RETRAN-02 program designed to provide analysis capabilities for (1) boiling water reactor (BWR) and pressurized water reactor (PWR) transients, (2) small break loss-of-coolant accidents, (3) anticipated transients without scram, (4) long-term transients, (5) transients with thermodynamic non...

1998-10-14T23:59:59.000Z

196

Warped Conformal Field Theory  

E-Print Network (OSTI)

We study field theories in two spacetime dimensions invariant under a chiral scaling symmetry that acts only on right-movers. The local symmetries include one copy of the Virasoro algebra and a U(1) current algebra. This differs from the 2d conformal group, but in some respects is equally powerful in constraining the theory. In particular, the symmetries on a torus lead to modular covariance of the partition function, which is used to derive a universal formula for the asymptotic density of states. For an application we turn to the holographic description of black holes in quantum gravity, motivated by the fact that the symmetries in the near horizon geometry of any extremal black hole are identical to those of a 2d field theory with chiral scaling. We consider two examples: black holes in warped AdS_3 in topologically massive gravity, and in string theory. In both cases, the density of states in the 2d field theory reproduces the Bekenstein-Hawking entropy of black holes in the gravity theory.

Detournay, Stephane; Hofman, Diego M

2012-01-01T23:59:59.000Z

197

Warped Conformal Field Theory  

E-Print Network (OSTI)

We study field theories in two spacetime dimensions invariant under a chiral scaling symmetry that acts only on right-movers. The local symmetries include one copy of the Virasoro algebra and a U(1) current algebra. This differs from the 2d conformal group, but in some respects is equally powerful in constraining the theory. In particular, the symmetries on a torus lead to modular covariance of the partition function, which is used to derive a universal formula for the asymptotic density of states. For an application we turn to the holographic description of black holes in quantum gravity, motivated by the fact that the symmetries in the near horizon geometry of any extremal black hole are identical to those of a 2d field theory with chiral scaling. We consider two examples: black holes in warped AdS_3 in topologically massive gravity, and in string theory. In both cases, the density of states in the 2d field theory reproduces the Bekenstein-Hawking entropy of black holes in the gravity theory.

Stephane Detournay; Thomas Hartman; Diego M. Hofman

2012-10-01T23:59:59.000Z

198

Argonne Physics Division - Theory Group  

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

23rd Annual Midwest Theory Get-Together 2010 Theory Group Theoretical research in Argonne's Physics Division addresses a broad range of problems involving the stucture and dynamics...

199

Argonne Physics Division - Theory Group  

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

Argonne Theory Group: Postdoctoral Position The Theory Group in the Physics Division at Argonne National Laboratory is seeking exceptional candidates for a postdoctoral position...

200

Thermodynamic theory of kinetic overshoots  

E-Print Network (OSTI)

Everything that is not prohibited is permissible. So, what is prohibited in the course of chemical reactions, heat transfer and other dissipative processes? Is it possible to overshoot the equilibrium, and if yes, then how far? Thermodynamically allowed and prohibited trajectories of processes are discussed by the example of effects of equilibrium encircling. The complete theory of thermodynamically accessible states is presented. The space of all thermodynamically admissible paths is presented by projection on the thermodynamic tree, that is the tree of the related thermodynamic potential (entropy, free energy, free enthalpy) in the balance polyhedron. The stationary states and limit points for open systems are localized too. 1

Er N. Gorban; Gregory S. Yablonsky

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Roadmaps for All Atoms in Biochemical Reactions | U.S. DOE Office of  

Office of Science (SC) Website

Roadmaps for All Atoms in Biochemical Reactions Roadmaps for All Atoms in Biochemical Reactions Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » September 2012 Roadmaps for All Atoms in Biochemical Reactions How atoms move in biochemical reactions - a fast and accurate method to model all the atoms. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

202

The Antioxidant Vitamins C & EChapter 3 Biochemical and Physiological Interactions of Vitamin C and Iron  

Science Conference Proceedings (OSTI)

The Antioxidant Vitamins C & E The Antioxidant Vitamins C & E Chapter 3 Biochemical and Physiological Interactions of Vitamin C and Iron eChapters Health - Nutrition - Biochemistry Press Downloadable pdf of Chapter

203

Journal Review: Biomolecular Engineering, Bioengineering, Biochemicals, and Food Directed Evolution: Past, Present, and Future  

E-Print Network (OSTI)

Journal Review: Biomolecular Engineering, Bioengineering, Biochemicals, and Food Directed Evolution online January 18, 2013 in Wiley Online Library (wileyonlinelibrary.com) Directed evolution evolution, modern directed evolution came of age 20 years ago with the demonstration of repeated rounds

Zhao, Huimin

204

Project summary Improving the Productivity of Algal Bioreactors for Biofuel and Biochemical Production  

E-Print Network (OSTI)

Project summary Improving the Productivity of Algal Bioreactors for Biofuel and Biochemical-derived fuels, or biofuels, are seen as a substantial portion of a sustainable energy portfolio. Aquatic algal biofuel production currently exist. Many private companies are currently attempting

Walter, M.Todd

205

National Bioenergy Center--Biochemical Platform Integration Project: Quarterly Update, Fall 2010  

DOE Green Energy (OSTI)

Fall 2010 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: rapid analysis models for compositional analysis of intermediate process streams; engineered arabinose-fermenting Zymomonas mobilis strain.

Schell, D.

2010-12-01T23:59:59.000Z

206

The Particle Adventure | Unsolved Mysteries | String theory  

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

String theory String theory Modern physics has good theories for quantum mechanics, relativity, and gravity. But these theories do not quite work with each other. There are...

207

Highly-efficient noise-assisted energy transport in classical oscillator systems  

E-Print Network (OSTI)

Photosynthesis is a biological process that involves the highly-efficient transport of energy captured from the sun to a reaction center, where conversion into useful biochemical energy takes place. Even though one can always use a quantum perspective to describe any physical process, since everything follows the laws of Quantum Mechanics, is the use of quantum theory imperative to explain this high efficiency? Several theoretical studies suggest that the high efficiency can only be understood as a result of the interplay between the quantum coherent evolution of the photosynthetic system, and noise introduced by its surrounding environment. Notwithstanding, we show here that noise-assisted highly-efficient energy transport can be found as well in purely classical systems; therefore, we might conclude that high efficiency energy transfer in photosynthetic systems could also be anticipated by classical models, without the need to resorting to quantum effects. Strikingly, the wider scope of applicability of the...

Len-Montiel, R de J

2013-01-01T23:59:59.000Z

208

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Use of Composting · Composting has ­ British Columbia 2009 #12;Disposal: Science and Theory · Initial farm linked to NY LBM · Two additional and pile procedure Delmarva 2004 #12;Disposal: Science and Theory Delmarva 2004 · Composting used

Benson, Eric R.

209

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Foam Used in Actual Outbreak · Water #12;Disposal: Science and Theory Water Based Foam Culling Demo · First large scale comparison · Two:46 (m:s) #12;Disposal: Science and Theory WV H5N2 AIV 2007 · AIV positive turkeys ­ 25,000 turkey farm

Benson, Eric R.

210

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · El compostaje se ha usado como Virginia (2007) ­ British Columbia (2009) Uso del compostaje #12;Disposal: Science and Theory · Primera apilamiento Delmarva (2004) #12;Disposal: Science and Theory · El compostaje se usó para proteger una densa

Benson, Eric R.

211

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Previous Research · Composting, et.al. 2005; Bendfeldt et al., 2006; DeRouchey et al., 2005) #12;Disposal: Science and Theory: Science and Theory Scientific Validation of Composting · Experiment 1 Impact of foam on composting

Benson, Eric R.

212

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Poultry Farm Daily Disposal Methods 0;Disposal: Science and Theory First Composter in Delaware · Delmarva was of the first daily composting · 120 in USA over next 10 years #12;Disposal: Science and Theory Composting Procedure · Mixture ­ 1 ½ to 2

Benson, Eric R.

213

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Compostaje de aves de corralRouchey et al., 2005) Investigación previa #12;Disposal: Science and Theory · Se ha evaluado y documentado el, bovino Investigación previa #12;Disposal: Science and Theory · Experimento nro. 1 Impacto de la espuma en

Benson, Eric R.

214

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Se ubica el carretón con el enfriamiento Ventiladores de túnel de viento #12;Disposal: Science and Theory · Se estaciona el remolque en uno: Science and Theory · Se usa un equipo de dos personas para hacer funcionar el sistema: ­ Operario del

Benson, Eric R.

215

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Opciones para la eliminación · ¿Qué compostaje durante brotes de enfermedades Lista de contenido #12;Disposal: Science and Theory "Ante un brote brotes de IIAP #12;Disposal: Science and Theory · En 2004, se despoblaron 100 millones de aves en todo el

Benson, Eric R.

216

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Las recomendaciones de campo se la espuma #12;Disposal: Science and Theory · Múltiples especies de aves pueden despoblarse con espuma cesación #12;Disposal: Science and Theory · Dentro de una especie, pueden existir variaciones ­ Los ánades

Benson, Eric R.

217

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Summary · Foam is currently a viable ­ Foam application directly to cage #12;Disposal: Science and Theory Legal Status of Foam · Procedure depopulation, culling, and euthanasia #12;Disposal: Science and Theory Acknowledgements · USDA AICAP2 · USDA

Benson, Eric R.

218

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Mass Emergency Composting · Basic ­ Create carcass and litter windrow #12;Disposal: Science and Theory Mass Emergency Composting · Basic cover ­ Clean and disinfect house ­ Sample for virus again #12;Disposal: Science and Theory Mass

Benson, Eric R.

219

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Gassing is a preferred #12;Disposal: Science and Theory Carbon Dioxide Gassing · Carbon dioxide (CO2) one of the standard sensitivity time #12;Disposal: Science and Theory · Argon-CO2 gas depopulation evaluated under laboratory

Benson, Eric R.

220

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · El compostaje se define como la: Science and Theory · Compostaje óptimo ­ Relación carbono/nitrógeno (C:N): 20:1 a 35:1 ­ Contenido de Compostaje #12;Disposal: Science and Theory · Se ha utilizado satisfactoriamente una variedad de materiales

Benson, Eric R.

Note: This page contains sample records for the topic "biochemical systems theory" 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

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Foam Generator Setup · Drop off foam generator cart at one end of house #12;Disposal: Science and Theory Foam Generator Setup · Trailer parked generator attached to hose #12;Disposal: Science and Theory Foam Generation Begins · Team of two to operate

Benson, Eric R.

222

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory 0 20 40 60 80 100 Compostaje #12;Disposal: Science and Theory · Delmarva fue de las primeras granjas en realizar el compostaje de en EE.UU. en los próximos 10 años. Pionera en compostaje en Delaware #12;Disposal: Science and Theory

Benson, Eric R.

223

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Procedimiento básico ­ Desarrollar una pila de carcasas y lecho. Compostaje masivo de emergencia #12;Disposal: Science and Theory de emergencia #12;Disposal: Science and Theory · Desarrollar planes antes de que ocurra una

Benson, Eric R.

224

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Composting · Composting is defined drop #12;Disposal: Science and Theory Composting · Optimal composting ­ Carbon to nitrogen ratio (C;Disposal: Science and Theory Compost Composition · A variety of supplemental carbon materials have been

Benson, Eric R.

225

Fock exchange in meson theories of nuclei  

Science Conference Proceedings (OSTI)

The Fock exchange term in meson field theories of nuclear systems is shown to arise from a two-loop ground-state self-energy diagram. Evaluation of this diagram gives the relativistic or semirelativistic analog of the Fock exchange energy; it differs from the nucleon-nucleon Fock energy in including retardation effects. In finite meson-field theories of nuclear systems, the variational nature of the meson-field analog of the Hartree-Fock energy functional can be further elucidated. 4 refs.

Bolsterli, M.

1986-01-01T23:59:59.000Z

226

Single-particle motion at large distances in 2N+core cluster systems near the drip line: a challenge for nuclear theory and experiment  

E-Print Network (OSTI)

There exists a class of nuclei that are obtained by adding one nucleon to a loosely-bound nucleon-core system, for example $^{12}$Be, $^9$C, $^{18}$Ne. For such nuclei, one-nucleon overlap integrals that represent single-particle motion can strongly differ from the standard ones due to the correlations between the two nucleons above the core. The possible non-standard overlap behaviour should be included in the interpretation of the experimental data derived from one nucleon removal reactions such as knockout, transfer and breakup, as well as the predictions of low-energy nucleon capture that leads to these nuclei. We investigate the non-standard behaviour within a three-body model and discuss the challenges associated with this problem.

N. K. Timofeyuk; I. J. Thompson; J. A. Tostevin

2008-05-15T23:59:59.000Z

227

Biochemical and biophysical characterization of the transmissible gastroenteritis coronavirus fusion core  

Science Conference Proceedings (OSTI)

Transmissible gastroenteritis coronavirus (TGEV) is one of the most destructive agents, responsible for the enteric infections that are lethal for suckling piglets, causing enormous economic loss to the porcine fostering industry every year. Although it has been known that TGEV spiker protein is essential for the viral entry for many years, the detail knowledge of the TGEV fusion protein core is still very limited. Here, we report that TGEV fusion core (HR1-SGGRGG-HR2), in vitro expressed in GST prokaryotic expression system, shares the typical properties of the trimer of coiled-coil heterodimer (six {alpha}-helix bundle), which has been confirmed by a combined series of biochemical and biophysical evidences including size exclusion chromatography (gel-filtration), chemical crossing, and circular diagram. The 3D homologous structure model presents its most likely structure, extremely similar to those of the coronaviruses documented. Taken together, TGEV spiker protein belongs to the class I fusion protein, characterized by the existence of two heptad-repeat (HR) regions, HR1 and HR2, and the present knowledge about the truncated TGEV fusion protein core may facilitate in the design of the small molecule or polypeptide drugs targeting the membrane fusion between TGEV and its host.

Ma Guangpeng [Department of Preventive Veterinary, College of Veterinary Medicine, Northeast Agriculture University, 150030 Harbin (China); Feng Youjun [Laboratory of Molecular Immunology and Molecular Virology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080 (China); Graduate School of the Chinese Academy of Sciences (China); Gao Feng [Laboratory of Molecular Immunology and Molecular Virology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080 (China); China Agricultural University, Beijing 100094 (China); Wang Jinzi [China Agricultural University, Beijing 100094 (China); Liu Cheng [China Agricultural University, Beijing 100094 (China); Li Yijing [Department of Preventive Veterinary, College of Veterinary Medicine, Northeast Agriculture University, 150030 Harbin (China)]. E-mail: yijingli@163.com

2005-12-02T23:59:59.000Z

228

Biochemical and molecular analysis of a transmembrane protein kinase from Arabidopsis thaliana  

DOE Green Energy (OSTI)

We have isolated genomic and cDNA clones encoding a novel receptor-like protein kinase from the higher plant Arabidopsis thaliana. This kinase is being studied by combining biochemical, molecular, and genetic approaches. Domain-specific antibodies immunodecorate a polypeptide with a molecular mass of 120,000 daltons in extracts of Arabidopsis, where it has been found in all portions of the plant examined including root, stem, leaf, flower, and silique. Cytochemical analysis and initial studies using the kinase promoter with the GUS reporter gene system also indicate that the kinase is present throughout the plant. The kinase is glycosylated, like animal receptor kinases, and has been partially purified from Arabidopsis by using lectin columns. The kinase has been expressed in E coli, purified, and found to autophosphorylate on serine and threonine residues, but not on tyrosine residues. As such, it belongs to the small family of receptor-like kinases with serine/threonine specificity. Transgenic plants are now being produced that either overexpress or carry altered forms of the protein kinase gene. These experiments will help determine the natural role the kinase plays in a pathway of signal transduction.

Bleecker, A.B.

1993-01-01T23:59:59.000Z

229

Biochemical and molecular analysis of a transmembrane protein kinase from Arabidopsis thaliana. Progress report, January 1993  

DOE Green Energy (OSTI)

We have isolated genomic and cDNA clones encoding a novel receptor-like protein kinase from the higher plant Arabidopsis thaliana. This kinase is being studied by combining biochemical, molecular, and genetic approaches. Domain-specific antibodies immunodecorate a polypeptide with a molecular mass of 120,000 daltons in extracts of Arabidopsis, where it has been found in all portions of the plant examined including root, stem, leaf, flower, and silique. Cytochemical analysis and initial studies using the kinase promoter with the GUS reporter gene system also indicate that the kinase is present throughout the plant. The kinase is glycosylated, like animal receptor kinases, and has been partially purified from Arabidopsis by using lectin columns. The kinase has been expressed in E coli, purified, and found to autophosphorylate on serine and threonine residues, but not on tyrosine residues. As such, it belongs to the small family of receptor-like kinases with serine/threonine specificity. Transgenic plants are now being produced that either overexpress or carry altered forms of the protein kinase gene. These experiments will help determine the natural role the kinase plays in a pathway of signal transduction.

Bleecker, A.B.

1993-06-01T23:59:59.000Z

230

History of Unified Theories  

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

Jahrelang haben Physiker nach vereinheitlichten Theorien gesucht - und Jahrelang haben Physiker nach vereinheitlichten Theorien gesucht - und diese auch gefunden. 1861-1865 James Maxwell, beschreibt in einem Artikel die Zusammenhänge zwischen elektrischen und magnetischen Feldern und vereinigt diese zur Theorie des Elektromagnetismus. Das führte zu den heute berühmten Maxwell'schen Gleichungen. 1881-1884 Heinrich Hertz demonstriert im Experiment die Existenz von Radiowellen und zeigt, dass Radiowellen und Licht elektromagnetische Wellen unterschiedlicher Frequenz darstellen - ein Faktum, das bereits von Maxwell in seiner Theorie vorhergesagt wurde. 1967-1970 Glashow, Salam und Weinberg schlagen eine Theorie vor, welche die elektromagnetische Wechselwirkung mit der schwachen WW vereinigt. Sie sagen die Masse des W Bosons, welches schwache Wechselwirkung - z.B.

231

Oriented Matroid Theory as a Mathematical Framework for M-Theory  

E-Print Network (OSTI)

We claim that $M$(atroid) theory may provide a mathematical framework for an underlying description of $M$-theory. Duality is the key symmetry which motivates our proposal. The definition of an oriented matroid in terms of the Farkas property plays a central role in our formalism. We outline how this definition may be carried over $M$-theory. As a consequence of our analysis we find a new type of action for extended systems which combines dually the $p$-brane and its dual $p^{\\perp}$-brane.

J. A. Nieto

2005-06-13T23:59:59.000Z

232

Mathematical Quantum Field Theory and Renormalization Theory  

E-Print Network (OSTI)

This volume of Math-for-Industry Lecture Note Series is dedicated to Professor Izumi Ojima and Professor Kei-ichi Ito on the occasion of their sixtieth birthdays. Professor Izumi Ojima and Professor Kei-ichi Ito have organized a lot of interesting and advanced conferences, e.g., RIMS conference, on quantum field theory and related topics, and they have encouraged not only young but also senior scientists. We would like to express our hearty gratitude to Professor Izumi Ojima and Professor Kei-ichi Ito for their continuous encouragement to us, stimulating our works, innumerable, unbounded helpful comments to our scientific researches. This lecture note is collecting several research papers and survey articles contributed by invited speakers of the international conference

Renormalization

2009-01-01T23:59:59.000Z

233

A. TECHNICAL PROGRESS REPORT ON METABOLISM IN NERVOUS SYSTEM  

SciTech Connect

Progress is reported in investigations into nucleic acid and protein metabolism in the central nervous system. Data are presented from biochemical and histochemical studies of metabolism in the nervous system of cats. (C.H.)

1961-01-01T23:59:59.000Z

234

The Solar pp and hep Processes in Effective Field Theory  

E-Print Network (OSTI)

The strategy of modern effective field theory is exploited to pin down accurately the flux $S$ factors for the $pp$ and $hep$ processes in the Sun. The technique used is to combine the high accuracy established in few-nucleon systems of the "standard nuclear physics approach" (SNPA) and the systematic power counting of chiral perturbation theory (ChPT) into a consistent effective field theory framework. Using highly accurate wave functions obtained in the SNPA and working to \

T. -S. Park; K. Kubodera; D. -P. Min; M. Rho

2001-08-21T23:59:59.000Z

235

Quantum Game Theory  

E-Print Network (OSTI)

Quantum game theory is the study of strategic behavior by agents with access to quantum technology. Broadly speaking, this technology can be employed in either of two ways: As part of a randomization device or as part of a communications protocol. We survey some of the main ideas from both branches of the subject.

Landsburg, Steven E

2011-01-01T23:59:59.000Z

236

Prequantum Classical Statistical Field Theory: Fundamentals  

SciTech Connect

We present fundamentals of a prequantum model with hidden variables of the classical field type. In some sense this is the comeback of classical wave mechanics. Our approach also can be considered as incorporation of quantum mechanics into classical signal theory. All quantum averages (including correlations of entangled systems) can be represented as classical signal averages and correlations.

Khrennikov, Andrei [International Center for Mathematical Modelling in Physics and Cognitive Sciences, Linnaeus University, Vaexjoe, S-35195 (Sweden)

2011-03-28T23:59:59.000Z

237

Chaotic thermalization in classical gauge theories  

SciTech Connect

We explore the idea that chaos concepts might be useful for understanding the thermalization in gauge theories. The SU(2) Higgs model is discussed as a prototype of system with gauge fields coupled to matter fields. Through the numerical solution of the equations of motion, we are able to characterize chaotic behavior via the corresponding Lyapunov exponent. Then it is demonstrated that the system's approach to equilibrium can be understood through direct application of the principles of Statistical Mechanics.

Woitek, Marcio; Krein, Gastao [Instituto de Fisica Teorica, Universidade Estadual Paulista Rua Dr. Bento Teobaldo Ferraz, 271 - Bloco II, Sao Paulo, SP (Brazil)

2013-05-06T23:59:59.000Z

238

Formulating Quantum Theory as a Causally Neutral Theory of Bayesian Inference  

E-Print Network (OSTI)

Quantum theory can be viewed as a generalization of classical probability theory, but the analogy as it has been developed so far is not complete. Classical probability theory is independent of causal structure, whereas the conventional quantum formalism requires causal structure to be fixed in advance. In this paper, we develop the formalism of quantum conditional states, which unifies the description of experiments involving two systems at a single time with the description of those involving a single system at two times. The analogies between quantum theory and classical probability theory are expressed succinctly within the formalism and it unifies the mathematical description of distinct concepts, such as ensemble preparation procedures, measurements, and quantum dynamics. We introduce a quantum generalization of Bayes' theorem and the associated notion of Bayesian conditioning. Conditioning a quantum state on a classical variable is the correct rule for updating quantum states in light of classical data, regardless of the causal relationship between the classical variable and the quantum degrees of freedom, but it does not include the projection postulate as a special case. We show that previous arguments that projection is the quantum generalization of conditioning are based on misleading analogies. Since our formalism is causally neutral, conditioning provides a unification of the predictive and retrodictive formalisms for prepare-and-measure experiments and leads to an elegant derivation of the set of states that a system can be "steered" to by making measurements on a remote system.

M. S. Leifer; R. W. Spekkens

2011-07-29T23:59:59.000Z

239

Aging Logarithmic Galilean Field Theories  

E-Print Network (OSTI)

We analytically compute correlation and response functions of scalar operators for the systems with Galilean and corresponding aging symmetries for general spatial dimensions $d$ and dynamical exponent $z$, along with their logarithmic and logarithmic squared extensions, using the gauge/gravity duality. These non-conformal extensions of the aging geometry are marked by two dimensionful parameters, eigenvalue $\\mathcal M$ of an internal coordinate and aging parameter $\\alpha$. We further perform systematic investigations on two-time response functions for general $d$ and $z$, and identify the growth exponent as a function of the scaling dimensions $\\Delta$ of the dual field theory operators and aging parameter $\\alpha$ in our theory. The initial growth exponent is only controlled by $\\Delta$, while its late time behavior by $\\alpha$ as well as $\\Delta$. These behaviors are separated by a time scale order of the waiting time. We attempt to make contact our results with some field theoretical growth models, such as Kim-Kosterlitz model at higher number of spatial dimensions $d$.

Seungjoon Hyun; Jaehoon Jeong; Bom Soo Kim

2013-03-29T23:59:59.000Z

240

Dynamic demultiplexing in network calculus-Theory and application  

Science Conference Proceedings (OSTI)

During the last two decades, starting with the seminal work by Cruz, network calculus has evolved as a new theory for the performance analysis of networked systems. In contrast to classical queueing theory, it deals with performance bounds instead of ... Keywords: Demultiplexing, Network calculus, Performance bounds, Stochastic scaling

Hao Wang; Jens B. Schmitt; Ivan Martinovic

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Overview of nonlinear theory of kinetically driven instabilities  

Science Conference Proceedings (OSTI)

An overview is presented of the theory for the nonlinear behavior of instabilities driven by the resonant wave particle interaction. The approach should be applicable to a wide variety of kinetic systems in magnetic fusion devices and accelerators. Here the authors emphasize application to Alfven were driven instability, and the principles of the theory are used to interpret experimental data.

Berk, H.L.; Breizman, B.N.

1998-09-01T23:59:59.000Z

242

ERGODIC THEORY OF PARABOLIC HORSESHOES MARIUSZ URBANSKI AND CHRISTIAN WOLF  

E-Print Network (OSTI)

ERGODIC THEORY OF PARABOLIC HORSESHOES MARIUSZ URBA´NSKI AND CHRISTIAN WOLF Abstract. In this paper parabolic fixed point and possibly also on Ws (). We call f a parabolic horseshoe map. In order to analyze of an embedded parabolic iterated function system and to apply the developed theory of the symbolic -finite

Urbanski, Mariusz

243

Parametrized-post-Newtonian limit of the scalar-tetradic theory A  

SciTech Connect

The scalar-tetradic theory A was recently formulated. Here, all the parametrized-post-Newtonian solar system predictions of this theory are proved to be identical to those of general relativity.

Saez, D.

1985-11-15T23:59:59.000Z

244

Theory and application of open quantum systems  

E-Print Network (OSTI)

iii) time-convolutionless (TCL) projection[20, 13], and (iv)P t diagrammatic Born classical NZ TCL additive ME gt Figurebetween the low order TCL and the additive approximation

Chan, Ching-Kit; Chan, Ching-Kit

2012-01-01T23:59:59.000Z

245

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory · Field recommendations based of activity ­ Corticosterone ­ EEG, ECG and motion studies · Large scale testing ­ Field scale units Science of Foam #12;Disposal: Science and Theory Cessation Time · Multiple bird species can be depopulated

Benson, Eric R.

246

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Opciones para la producción de espuma espuma · Sistemas de boquilla #12;Disposal: Science and Theory Requisitos estimados: · Tiempo: 2 a 3 compactas ­ Equipo de respuesta propio de la industria Espuma de aire comprimido #12;Disposal: Science

Benson, Eric R.

247

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory 2004 ­ Participación de Bud Malone y la espuma 2009 ­ Ninguna ventaja para el gas Breve historia de la espuma #12;Disposal: Science sistema de boquilla ¿Qué es la espuma? #12;Disposal: Science and Theory · La espuma puede incluir: ­ Una

Benson, Eric R.

248

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Table of Contents · Why Depopulate? · Depopulation Methods · Basics of Foam · Types of Foam Equipment · Science Behind Foam · Implementing Foam Depopulation · Use of Foam in the Field · Conclusions #12;Disposal: Science and Theory "When HPAI outbreaks

Benson, Eric R.

249

Theory Seminar Schedule  

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

6-2007 6-2007 Click on a title to read an abstract, if available (underlined). 10 July 2007 Special Day: Tuesday, 3:00pm Robert Wiringa Argonne National Laboratory wiringa@theory.phy.anl.gov Dependence of nuclear binding on hadronic mass variation 3 July 2007 Special Day and Time: Tuesday, 10:30am Renato Higa University of Bonn, Germany higa@itkp.uni-bonn.de Coulomb interactions within Halo EFT 5 June 2007 Special Day and Time: Tuesday, 10.30am Omar Benhar Istituto Nazionale di Fisica Nucleare, Rome, Italy benhar@roma1.infn.it The equation of state of neutron star matter and gravitational wave emission 29 May 2007 Special Day: Tuesday Ulrich Mosel Giessen University, Germany Ulrich.Mosel@theo.physik.uni-giessen.de Hadrons in Medium - Theory meets experiment 10 May 2007

250

A practical theory of micro-solar power sensor networks  

Science Conference Proceedings (OSTI)

Building a micro-solar power system is challenging because it must address long-term system behavior under highly variable solar energy and consider a large design space. We develop a practical theory of micro-solar power systems that is materialized ... Keywords: Micro-solar power system, deployment, modeling, simulation, validation

Jaein Jeong; David Culler

2012-11-01T23:59:59.000Z

251

NUCLEAR THEORY WHITE PAPER 1995  

E-Print Network (OSTI)

We review the accomplishments of nuclear theory during the past five years and identify the future challenges and research opportunities. [Final, substantially revised version of the nuclear theory white paper

G. Bertsch; B. Mueller; J. Negele; J. Friar; V. Pandharipande

1995-02-15T23:59:59.000Z

252

Nuclear effective field theory on the lattice  

E-Print Network (OSTI)

In the low-energy region far below the chiral symmetry breaking scale (which is of the order of 1 GeV) chiral perturbation theory provides a model-independent approach for quantitative description of nuclear processes. In the two- and more-nucleon sector perturbation theory is applicable only at the level of an effective potential which serves as input in the corresponding dynamical equation. To deal with the resulting many-body problem we put chiral effective field theory (EFT) on the lattice. Here we present the results of our lattice EFT study up to next-to-next-to-leading order in the chiral expansion. Accurate description of two-nucleon phase-shifts and ground state energy ratio of dilute neutron matter up to corrections of higher orders shows that lattice EFT is a promising tool for a quantitative description of low-energy few- and many-body systems.

Hermann Krebs; Bugra Borasoy; Evgeny Epelbaum; Dean Lee; Ulf-G. Mei ner

2008-10-01T23:59:59.000Z

253

Conformal field theory on affine Lie groups  

Science Conference Proceedings (OSTI)

Working directly on affine Lie groups, we construct several new formulations of the WZW model, the gauged WZW model, and the generic affine-Virasoro action. In one formulation each of these conformal field theories (CFTs) is expressed as a one-dimensional mechanical system whose variables are coordinates on the affine Lie group. When written in terms of the affine group element, this formulation exhibits a two-dimensional WZW term. In another formulation each CFT is written as a two-dimensional field theory, with a three- dimensional WZW term, whose fields are coordinates on the affine group. On the basis of these equivalent formulations, we develop a translation dictionary in which the new formulations on the affine Lie group are understood as mode formulations of the conventional formulations on the Lie group. Using this dictionary, we also express each CFT as a three-dimensional field theory on the Lie group with a four-dimensional WZW term. 36 refs.

Clubok, K.S.

1996-04-01T23:59:59.000Z

254

Paramagnetic form factors from itinerant electron theory  

Science Conference Proceedings (OSTI)

Elastic neutron scattering experiments performed over the past two decades have provided accurate information about the magnetic form factors of paramagnetic transition metals. These measurements have traditionally been analyzed in terms of an atomic-like theory. There are, however, some cases where this procedure does not work, and there remains the overall conceptual problem of using an atomistic theory for systems where the unpaired-spin electrons are itinerant. We have recently developed computer codes for efficiently evaluating the induced magnetic form factors of fcc and bcc itinerant electron paramagnets. Results for the orbital and spin contributions have been obtained for Cr, Nb, V, Mo, Pd and Rh based on local density bands. By using calculated spin enhancement parameters, we find reasonable agreement between theory and neutron form factor data. In addition, these zero parameter calculations yield predictions for the bulk susceptibility on an absolute scale which are in reasonable agreement with experiment in all treated cases except palladium.

Cooke, J.F.; Liu, S.H.; Liu, A.J.

1984-09-01T23:59:59.000Z

255

Argonne Physics Division - Theory Group  

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

Division Seminar: R-150 @ 3:30pm Division Seminar: R-150 @ 3:30pm 14 April 2011 Stefano Gandolfi Los Alamos National Laboratory stefano@lanl.gov Quantum Monte Carlo Study of Strongly Correlated Fermions: Neutron Matter, Neutron Stars and Cold Atoms Division Seminar: R-150 @ 3:30pm 31 March 2011 Lucas Platter Chalmers University of Technology, Göteborg platter@chalmers.se Effective Field Theories for Nuclear Systems Division Seminar: R-150 @ 3:30pm 17 February 2011 Alexandros Gezerlis University of Washington gezerlis@uw.edu Bridging the Gap: Fermions in Nuclear Structure and Nuclear Astrophysics Special Day: Tuesday 15 February 2011 Louis H. Kauffman UIC kauffman@uic.edu Topological Quantum Information and the Jones Polynomial Division Seminar: R-150 @ 3:30pm 10 February 2011 JoaquÃ-n Drut

256

Kinetic Theory of Plasma Waves  

Science Conference Proceedings (OSTI)

Kinetic Wave Theory / Proceedings of the Tenth Carolus Magnus Summer School on Plasma and Fusion Energy Physics

D. Van Eester; E. Lerche

257

Renormalized weak plasma turbulence theory  

SciTech Connect

A renormalized Vlasov turbulence theory, derived by neglecting a mode coupling term in the Direct Interaction Approximation, is discussed. The theory reduces correctly to weak turbulence theory; it predicts both diffusion and polarization effects of the turbulent medium on test particles, as well as the inverse effects of the test particles on the medium. A heuristic, physical algorithm is presented for constructing the equations. The theory of the renormalized dielectric function is reviewed.

Krommes, J.A.; Kleva, R.G.

1979-02-01T23:59:59.000Z

258

Gauge theory and group representations  

SciTech Connect

The mathematical foundations of gauge theories based on indecomposable representations of space-time symmetry groups are investigated. In particular, twistors and singletons are given a uniform treatment as gauge theories of this type. This is a step toward geometrically unifying all representation based gauge theories. In addition, some implications with respect to the geometric construction of group representations are noted.

Nakashima, M.M.

1988-01-01T23:59:59.000Z

259

Quantum Field Theory Frank Wilczeky  

E-Print Network (OSTI)

Quantum Field Theory Frank Wilczeky Institute for Advanced Study, School of Natural Science, Olden Lane, Princeton, NJ 08540 I discuss the general principles underlying quantum eld theory, and attempt achieved and prospective. Possible limitations of quantum eld theory are viewed in the light of its history

Wilczek, Frank

260

Predictability and Information Theory. Part I: Measures of Predictability  

Science Conference Proceedings (OSTI)

This paper gives an introduction to the connection between predictability and information theory, and derives new connections between these concepts. A system is said to be unpredictable if the forecast distribution, which gives the most complete ...

Timothy DelSole

2004-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

A Three-Dimensional Balance Theory for Rapidly Rotating Vortices  

Science Conference Proceedings (OSTI)

A three-dimensional balance formulation for rapidly rotating vortices, such as hurricanes, is presented. The asymmetric balance (AB) theory represents a new mathematical framework for studying the slow evolution of rapidly rotating fluid systems. ...

Lloyd J. Shapiro; Michael T. Montgomery

1993-10-01T23:59:59.000Z

262

DUSEL Theory White Paper  

E-Print Network (OSTI)

The NSF has chosen the site for the Deep Underground Science and Engineering Laboratory (DUSEL) to be in Lead, South Dakota. In fact, the state of South Dakota has already stepped up to the plate and contributed its own funding for the proposed lab, see http://www.sanfordlaboratoryathomestake.org/index.html. The final decision by NSF for funding the Initial Suite of Experiments for DUSEL will be made early in 2009. At that time the NSF Science Board must make a decision. Of order 200 experimentalists have already expressed an interest in performing experiments at DUSEL. In order to assess the interest of the theoretical community, the Center for Cosmology and Astro-Particle Physics (CCAPP) at The Ohio State University (OSU) organized a 3-day DUSEL Theory Workshop in Columbus, Ohio from April 4 - 6, 2008. The workshop focused on the scientific case for six proposed experiments for DUSEL: long baseline neutrino oscillations, proton decay, dark matter, astrophysical neutrinos, neutrinoless double beta decay and N-Nbar oscillations. The outcome of this workshop is the DUSEL Theory White paper addressing the scientific case at a level which may be useful in the decision making process for policy makers at the NSF and in the U.S. Congress. In order to assess the physics interest in the DUSEL project we have posted the DUSEL Theory White paper on the following CCAPP link http://ccapp.osu.edu/whitepaper.html . Please read the white paper and, if you are interested, use the link to show your support by co-signing the white paper.

S. Raby; T. Walker; K. S. Babu; H. Baer; A. B. Balantekin; V. Barger; Z. Berezhiani; A. de Gouvea; R. Dermisek; A. Dolgov; P. Fileviez Perez; G. Gabadadze; A. Gal; P. Gondolo; W. Haxton; Y. Kamyshkov; B. Kayser; E. Kearns; B. Kopeliovich; K. Lande; D. Marfatia; R. N. Mohapatra; P. Nath; Y. Nomura; K. A. Olive; J. Pati; S. Profumo; R. Shrock; Z. Tavartkiladze; K. Whisnant; L. Wolfenstein

2008-10-24T23:59:59.000Z

263

ROHF Theory Made Simple  

E-Print Network (OSTI)

Restricted open-shell Hartree-Fock (ROHF) theory is formulated as a projected self-consistent unrestricted HF (UHF) model by mathematically constraining spin density eigenvalues. The resulting constrained UHF (CUHF) wave function is identical to that obtained from Roothaan's effective Fock operator. Our $\\alpha$ and $\\beta$ CUHF Fock operators are parameter-free and have canonical orbitals and orbital energies that are physically meaningful as in UHF, except for eliminating spin contamination. The present approach removes ambiguities in ROHF orbital energies and the non-uniqueness of methods that build upon them. We present benchmarks to demonstrate CUHF physical correctness and good agreement with experimental results.

Tsuchimochi, Takashi

2010-01-01T23:59:59.000Z

264

Theory of amorphous ices  

E-Print Network (OSTI)

We use large-deviation theory to study nonequilibrium transitions between amorphous solids and liquid in an atomistic model of supercooled water. Along with nonequilibrium transitions between the ergodic liquid and two distinct amorphous solids, we establish coexistence between the two amorphous solids, a finding that is consistent with experiment. The phase diagram we predict includes a nonequilibrium triple point where the two amorphous phases and the liquid coexist. While the amorphous solids are long-lived and slowly-aging glasses, their melting leads quickly to the formation of ice. This irreversible behavior is demonstrated in our theoretical treatment and compared with experiment.

David T Limmer; David Chandler

2013-06-20T23:59:59.000Z

265

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative temperature  

E-Print Network (OSTI)

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative energy storages for land-atmosphere interactions, an issue that has been largely neglected so far. We the representation of biomass energy storages against measurements of surface energy and CO2 fluxes. We

266

National Bioenergy Center, Biochemical Platform Integration Project: Quarterly Update, Summer 2011 (Newsletter)  

Science Conference Proceedings (OSTI)

Summer 2011 issue of the National Bioenergy Center Biochemical Platform Integration Project quarterly update. Issue topics: evaluating new analytical techniques for measuring soluble sugars in the liquid portion of biomass hydrolysates, and measurement of the fraction of insoluble solids in biomass slurries.

Not Available

2011-09-01T23:59:59.000Z

267

Molecular C dynamics downstream: The biochemical decomposition sequence and its impact on soil organic  

E-Print Network (OSTI)

Molecular C dynamics downstream: The biochemical decomposition sequence and its impact on soil chemistry. As a result, the molecular characteristics of soil C are now known for a range of ecosystems research. Here we present a conceptual model of molecular soil C dynamics to stimulate inter- disciplinary

Neff, Jason

268

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #28, Spring 2011  

DOE Green Energy (OSTI)

Spring 2011 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: 33rd Symposium on Biotechnology for Fuels and Chemicals program sessions and special topic sessions; assessment of waste water treatment needs; and an update on new arabinose-to-ethanol fermenting Zymomonas mobilis strains.

Schell, D. J.

2011-04-01T23:59:59.000Z

269

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #27, April - June 2010  

Science Conference Proceedings (OSTI)

April-June, 2010 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: understanding performance of alternative process configurations for producing ethanol from biomass; investigating Karl Fischer Titration for measuring water content of pretreated biomass slurries.

Schell, D.

2010-07-01T23:59:59.000Z

270

National Bioenergy Center - Biochemical Platform Integration Project: Quarterly Update, Winter 2010  

DOE Green Energy (OSTI)

Winter 2011 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: 33rd Symposium on Biotechnology for Fuels and Chemicals program topic areas; results from reactive membrane extraction of inhibitors from dilute-acid pretreated corn stover; list of 2010 task publications.

Schell, D.

2011-02-01T23:59:59.000Z

271

Duality in quantum field theory (and string theory)  

Science Conference Proceedings (OSTI)

These lectures give an introduction to duality in Quantum Field Theory. We discuss the phases of gauge theories and the implications of the electric-magnetic duality transformation to describe the mechanism of confinement. We review the exact results of N=1 supersymmetric QCD and the Seiberg-Witten solution of N=2 super Yang-Mills. Some of its extensions to String Theory are also briefly discussed.

Luis lvarez-Gaum; Frederic Zamora

1998-01-01T23:59:59.000Z

272

A New Lorentz Violating Nonlocal Field Theory From String-Theory  

E-Print Network (OSTI)

29] J. Polchinski, String theory. Vol. 2: SuperstringNonlocal Field Theory From String-Theory Ori J. GanorNonlocal Field Theory From String-Theory Ori J. Ganor ?

Ganor, Ori J.

2009-01-01T23:59:59.000Z

273

Heat pipe theory and practice: a sourcebook  

SciTech Connect

An introduction to heat pipe operating principles, types, and applications followed by a comprehensive treatment of heat pipe theory, design, and manufacture are presented. The organization of heat pipe theory provides parallel treatment of the fundamental laws of thermodynamics, heat transfer, fluid mechanics, and materials science during heat pipe analysis. For the problem-solving convenience of practicing engineers, design procedures are developed summarizing theoretical information. Methods of summarizing voluminous research information are presented in detail. Current practices in the manufacture of heat pipes are described. Current and potential applications of the heat pipe to energy systems discussed are: heat exchangers, heat recovery for HVAC systems, residential buildings, industrial processes, gasification plants, and thermal storage subsystems.

Chi, S.W.

1976-01-01T23:59:59.000Z

274

Quantum control theory and applications: A survey  

E-Print Network (OSTI)

This paper presents a survey on quantum control theory and applications from a control systems perspective. Some of the basic concepts and main developments (including open-loop control and closed-loop control) in quantum control theory are reviewed. In the area of open-loop quantum control, the paper surveys the notion of controllability for quantum systems and presents several control design strategies including optimal control, Lyapunov-based methodologies, variable structure control and quantum incoherent control. In the area of closed-loop quantum control, the paper reviews closed-loop learning control and several important issues related to quantum feedback control including quantum filtering, feedback stabilization, LQG control and robust quantum control.

Daoyi Dong; Ian R Petersen

2009-10-13T23:59:59.000Z

275

Quantum control theory and applications: A survey  

E-Print Network (OSTI)

This paper presents a survey on quantum control theory and applications from a control systems perspective. Some of the basic concepts and main developments (including open-loop control and closed-loop control) in quantum control theory are reviewed. In the area of open-loop quantum control, the paper surveys the notion of controllability for quantum systems and presents several control design strategies including optimal control, Lyapunov-based methodologies, variable structure control and quantum incoherent control. In the area of closed-loop quantum control, the paper reviews closed-loop learning control and several important issues related to quantum feedback control including quantum filtering, feedback stabilization, LQG control and robust quantum control.

Dong, Daoyi

2009-01-01T23:59:59.000Z

276

New Results in Topological Field Theory and Abelian Gauge Theory  

E-Print Network (OSTI)

These are the lecture notes of a set of lectures delivered at the 1995 Trieste summer school in June. I review some recent work on duality in four dimensional Maxwell theory on arbitrary four manifolds, as well as a new set of topological invariants known as the Seiberg-Witten invariants. Much of the necessary background material is given, including a crash course in topological field theory, cohomology of manifolds, topological gauge theory and the rudiments of four manifold theory. My main hope is to wet the readers appetite, so that he or she will wish to read the original works and perhaps to enter this field.

George Thompson

1995-11-06T23:59:59.000Z

277

DUSEL Theory White Paper  

SciTech Connect

The scientific case for a Deep Underground Science and Engineering Laboratory [DUSEL] located at the Homestake mine in Lead, South Dakota is exceptional. The site of this future laboratory already claims a discovery for the detection of solar neutrinos, leading to a Nobel Prize for Ray Davis. Moreover this work provided the first step to our present understanding of solar neutrino oscillations and a chink in the armor of the Standard Model of particle physics. We now know, from several experiments located in deep underground experimental laboratories around the world, that neutrinos have mass and even more importantly this mass appears to fit into the framework of theories which unify all the known forces of nature, i.e. the strong, weak, electromagnetic and gravitational. Similarly, DUSEL can forge forward in the discovery of new realms of nature, housing six fundamental experiments that will test the frontiers of our knowledge: (1) Searching for nucleon decay (the decay of protons and neutrons predicted by grand unified theories of nature); (2) Searching for neutrino oscillations and CP violation by detecting neutrinos produced at a neutrino source (possibly located at Brookhaven National Laboratory and/or Fermi National Laboratory); (3) Searching for astrophysical neutrinos originating from the sun, from cosmic rays hitting the upper atmosphere or from other astrophysical sources, such a supernovae; (4) Searching for dark matter particles (the type of matter which does not interact electromagnetically, yet provides 24% of the mass of the Universe); (5) Looking for the rare process known as neutrino-less double beta decay which is predicted by most theories of neutrino mass and allows two neutrons in a nucleus to spontaneously change into two protons and two electrons; and (6) Searching for the rare process of neutron- anti-neutron oscillations, which would establish violation of baryon number symmetry. A large megaton water Cherenkov detector for neutrinos and nucleon decay, located in DUSEL and roughly 20 times the size of current detectors, can perform the first three of these experiments. The last 3 can utilize the unique environment afforded by DUSEL to perform the most sensitive tests to date. Any one of these experiments can greatly increase our knowledge of nature. The Deep Underground Science and Engineering Laboratory (DUSEL), with a Large Megaton Size Detector, is desperately needed to address a set of fundamental issues in particle and astrophysics.

Raby, S.; /Ohio State U.; Walker, T.; /Ohio State U. /Ohio State U., Dept. Astron. /Ohio State U., CCAPP; Babu, K.S.; /Oklahoma State U.; Baer, H.; /Florida State U.; Balantekin, A.B.; Barger, V.; /Wisconsin U., Madison; Berezhiani, Z.; /Gran Sasso; de Gouvea, A.; /Northwestern U.; Dermisek, R.; /Princeton U.; Dolgov, A.; /Moscow, ITEP /Ferrara U.; Fileviez Perez, P.; /Wisconsin U., Madison; Gabadadze, G.; /New York U.; Gal, A.; /Hebrew U.; Gondolo, P.; /Utah U.; Haxton, W.; /Washington U., Seattle; Kamyshkov, Y.; /Tennessee U.; Kayser, B.; /Fermilab; Kearns, E.; /Boston U.; Kopeliovich, B.; /Santa Maria U., Valparaiso; Lande, K.; /Pennsylvania U.; Marfatia, D.; /Kansas U. /Maryland U. /Northeastern U. /UC, Berkeley /LBL, Berkeley /Minnesota U. /SLAC /UC, Santa Cruz /SUNY, Stony Brook /Oklahoma State U. /Iowa State U. /Carnegie Mellon U.

2011-11-14T23:59:59.000Z

278

Three distinct stages of apoptotic nuclear condensation revealed by time-lapse imaging, biochemical and electron microscopy analysis of cell-free apoptosis  

SciTech Connect

During apoptotic execution, chromatin undergoes a phase change from a heterogeneous, genetically active network to an inert highly condensed form that is fragmented and packaged into apoptotic bodies. We have previously used a cell-free system to examine the roles of caspases or other proteases in apoptotic chromatin condensation and nuclear disassembly. But so far, the role of DNase activity or ATP hydrolysis in this system has not yet been elucidated. Here, in order to better define the stages of nuclear disassembly in apoptosis, we have characterized the apoptotic condensation using a cell-free system and time-lapse imaging. We demonstrated that the population of nuclei undergoing apoptosis in vitro appears to follow a reproducible program of nuclear condensation, suggesting the existence of an ordered biochemical pathway. This enabled us to define three stages of apoptotic chromatin condensation: stage 1 ring condensation; stage 2 necklace condensation; and stage 3 nuclear collapse/disassembly. Electron microscopy revealed that neither chromatin nor detectable subnuclear structures were present inside the stage 1 ring-condensed structures. DNase activity was not essential for stage 1 ring condensation, which could occur in apoptotic extracts depleted of all detectable DNase activity. However, DNase(s) were required for stage 2 necklace condensation. Finally, we demonstrated that hydrolyzable ATP is required for stage 3 nuclear collapse/disassembly. This requirement for ATP hydrolysis further distinguished stage 2 from stage 3. Together, these experiments provide the first steps towards a systematic biochemical characterization of chromatin condensation during apoptosis.

Tone, Shigenobu [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan)], E-mail: tone@med.kawasaki-m.ac.jp; Sugimoto, Kenji [Laboratory of Applied Molecular Biology, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531 (Japan); Tanda, Kazue [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Suda, Taiji; Uehira, Kenzo [Electron Microscope Center, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Kanouchi, Hiroaki [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Samejima, Kumiko [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom); Minatogawa, Yohsuke [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Earnshaw, William C. [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom)], E-mail: Bill.Earnshaw@ed.ac.uk

2007-10-01T23:59:59.000Z

279

Systems  

E-Print Network (OSTI)

Abstract Developing usable and robust mixed reality systems requires unique humancomputer interaction techniques and customized hardware systems. The design of the hardware is directed by the requirements of the rich 3D interactions that can be performed using immersive mobile MR systems. Geometry modeling and capture, navigational annotations, visualizations, and training simulations are all enhanced using augmented computer graphics. We present the design guidelines that have led us through 10 years of evolving mobile outdoor MR hardware systems.

Benjamin Avery; Ross T. Smith; Wayne Piekarski; Bruce H. Thomas

2009-01-01T23:59:59.000Z

280

Generalized Forchheimer Equation for Two-Phase Flow Based on Hybrid Mixture Theory  

Science Conference Proceedings (OSTI)

In this paper, we derive a Forchheimer-type equation for two-phase flow through an isotropic porous medium using hybrid mixture theory. Hybrid mixture theory consists of classical mixture theory applied to a multiphase system with volume averaged equations. ...

Lynn S Bennethum; Tizian Giorgi

1996-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Leveraging IS theory by exploiting the isomorphism between different research areas  

Science Conference Proceedings (OSTI)

The discipline of Information Systems is sometimes accused of being heavy on practical technology but light on conceptual theory. Identifying 'isomorphisms' between specialist research areas in other disciplines (especially mathematics) has produced ... Keywords: enterprise modelling, frameworks, isomorphism, theory, theory building, website analysis

Jean-Paul Van Belle

2004-10-01T23:59:59.000Z

282

Theory Seminar Schedule  

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

7-2008 7-2008 Click on a title to read an abstract, if available (underlined). 12 June 2008 Kristina Sviratcheva Louisiana State University kristina@rouge.phys.lsu.edu Symplectic Ab Initio No-Core Shell Model - Taming the Model Space Dilemma 5 June 2008 Wick Haxton INT, University of Washington haxton@u.washington.edu Probing Time-odd Moments in Atoms and Nuclei 1 May 2008 Wolfgang Bentz Tokai University, Japan bentz@keyaki.cc.u-tokai.ac.jp Fragmentation functions in an effective quark theory 17 April 2008 Special Time: 10:30am Dmitry G. Yakovlev Ioffe Physico-Technical Institute, St.Petersburg yak@astro.ioffe.rssi.ru Landau and Neutron Stars Tuesday 15 April 2008 Special Day Jochen Wambach GSI and TU Darmstadt J.Wambach@gsi.de Viscosity in the Nambu--Jona-Lasinio Model Tuesday 8 April 2008

283

MBI Biorefinery: Corn to Biomass, Ethanol to Biochemicals and Biomaterials  

DOE Green Energy (OSTI)

The project is a continuation of DOE-funded work (FY02 and FY03) that has focused on the development of the ammonia fiber explosion (AFEX) pretreatment technology, fermentation production of succinic acid and new processes and products to enhance dry mill profitability. The primary objective for work beginning in April 2004 and ending in November 2005 is focus on the key issues related to the: (1) design, costing and construction plan for a pilot AFEX pretreatment system, formation of a stakeholder development team to assist in the planning and design of a biorefinery pilot plant, continued evaluation of corn fractionation technologies, corn oil extraction, AFEX treatment of corn fiber/DDGs; (2) development of a process to fractionate AFEX-treated corn fiber and corn stover--cellulose and hemicellulose fractionation and sugar recovery; and (3) development of a scalable batch succinic acid production process at 500 L at or below $.42/lb, a laboratory scale fed-batch process for succinic acid production at or below $.40/lb, a recovery process for succinic acid that reduces the cost of succinic acid by $.02/lb and the development of an acid tolerant succinic acid production strain at lab scale (last objective not to be completed during this project time period).

None

2006-02-17T23:59:59.000Z

284

Genetic and biochemical analysis of solvent formation in Clostridium acetobutylicum  

DOE Green Energy (OSTI)

The anaerobic organism Clostridium acetobutylicum has been used for commercial production of important organic solvents due to its ability to convert a wide variety of crude substrates to acids and alcohols. Current knowledge concerning the molecular genetics, cell regulation and metabolic engineering of this organism is still rather limited. The objectives are to improve the knowledge of the molecular genetics and enzymology of Clostridia in order to make genetic alterations which will more effectively channel cell metabolism toward production of desired products. Two factors that limit butanol production in continuous cultures are: (1) The degeneration of the culture, with an increase in the proportion of cells which are incapable of solvent production. Currently isolated degenerate strains are being evaluated to analyze the molecular mechanism of degeneration to determine if it is due to a genetic loss of solvent related genes, loss of a regulatory element, or an increase in general mutagenesis. Recent studies show two general types of degenerates, one which seems to have lost essential solvent pathway genes and another which has not completely lost all solvent production capability and retains the DNA bearing solvent pathway genes. (2) The production of hydrogen which uses up reducing equivalents in the cell. If the reducing power were more fully directed to the reduction reactions involved in butanol production, the process would be more efficient. The authors have studied oxidation reduction systems related to this process. These studies focus on ferredoxin and rubredoxin and their oxidoreductases.

Bennett, G.N.; Rudolph, F.B.

1998-05-01T23:59:59.000Z

285

Invariants from classical field theory  

Science Conference Proceedings (OSTI)

We introduce a method that generates invariant functions from perturbative classical field theories depending on external parameters. By applying our methods to several field theories such as Abelian BF, Chern-Simons, and two-dimensional Yang-Mills theory, we obtain, respectively, the linking number for embedded submanifolds in compact varieties, the Gauss' and the second Milnor's invariant for links in S{sup 3}, and invariants under area-preserving diffeomorphisms for configurations of immersed planar curves.

Diaz, Rafael [Grupo de Fisica-Matematica, Universidad Experimental Politecnica de las Fuerzas Armadas, Caracas 1010 (Venezuela); Leal, Lorenzo [Centro de Fisica Teorica y Computacional, Universidad Central de Venezuela, Caracas 1041-A (Venezuela)

2008-06-15T23:59:59.000Z

286

Fermilab | Science at Fermilab | Theory  

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

Theory Theorist Rakhi Mahbubani Theorist Rakhi Mahbubani Theoretical physics at Fermilab Fermilab is a laboratory where advances in particle physics, astrophysics and cosmology...

287

Argonne Physics Division - Theory Group  

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

Administration Secretary: Debbie Morrison EMail: morrison@anl.gov Phone: 630252-4100 Fax: 630252-3903 Address: Theory Group Physics Division, Building 203 Argonne National...

288

Poincare's program for dynamical systems and mathematical physics  

E-Print Network (OSTI)

for the fission theory of planetary and stellar systems. His stability analysis depended on linearisation

Verhulst, Ferdinand

289

Disposal: Science and Theory Disposal: Science and Theory  

E-Print Network (OSTI)

Disposal: Science and Theory #12;Disposal: Science and Theory Table of Contents · Disposal options emergency mortality composting procedure · Use of composting during outbreaks #12;Disposal: Science and disinfection of farms and surveillance around affected flocks. " USDA APHIS VS EMD, 2007 #12;Disposal: Science

Benson, Eric R.

290

Granular Rough Theory: A representation semantics oriented theory of roughness  

Science Conference Proceedings (OSTI)

The present work is an archival paper for a series of contributions proposed in last few years on building a theory of roughness over pure mereological relations among information granules. There are five major efforts taken in the present paper: (1) ... Keywords: Granular Representation Calculus, Granular Rough Theory, Granular-Rough Computational Web Intelligence

Bo Chen; Ming Sun; Mingtian Zhou

2009-03-01T23:59:59.000Z

291

Bio-PEPA: A framework for the modelling and analysis of biological systems  

Science Conference Proceedings (OSTI)

In this work we present Bio-PEPA, a process algebra for the modelling and the analysis of biochemical networks. It is a modification of PEPA, originally defined for the performance analysis of computer systems, in order to handle some features of biological ... Keywords: Analysis, Biochemical networks, Modelling, Process algebras

Federica Ciocchetta; Jane Hillston

2009-08-01T23:59:59.000Z

292

SewerSnort: A drifting sensor for in situ Wastewater Collection System gas monitoring  

Science Conference Proceedings (OSTI)

Biochemical reactions that occur in sewer pipes produce a considerable amount of hydrogen sulfide gas (H"2S corrosive and poisonous), methane gas (CH"4 explosive and a major climate change contributor), carbon dioxide (CO"2 a major climate change contributor), ... Keywords: Biochemical process, Electrochemical gas sensor, Mobile sensing, Received signal strength indicator based localization, Wastewater Collection System

Jung Soo Lim, Jihyoung Kim, Jonathan Friedman, Uichin Lee, Luiz Vieira, Diego Rosso, Mario Gerla, Mani B. Srivastava

2013-06-01T23:59:59.000Z

293

Some Criteria of Decidability for Axiomatic Systems in Three-Valued Logic  

Science Conference Proceedings (OSTI)

Two criteria of decidability for axiomatic systems based on J.Lukasiewicz's three-valued logic are established. Keywords: Luk-consistent theory, Luk-decidable theory, Luk-theory, Lukcomplete theory, three-valued predicate

I. D. Zaslavsky

2007-07-01T23:59:59.000Z

294

Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol  

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

8 8 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex Iowa State University G. Kothandaraman ConocoPhillips Company D. Hsu, A. Aden, and A. Dutta National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-6A2-46588 June 2010 Techno-Economic Analysis of Biochemical Scenarios for Production of Cellulosic Ethanol F. Kabir Kazi, J. Fortman, and R. Anex

295

Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells in Response to Low Dose Ionizing Radiation  

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

Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells Proteomic and Biochemical Studies of Human Mesenchymal Stem Cells in Response to Low Dose Ionizing Radiation Deok-Jin Jang 1 , Mingquan Guo 1 , Julia S.F.Chu 2 , Kyle T. Kurpinski 2 , Bjorn Rydberg 1 , Song Li 2 , and Daojing Wang 1 1. Life Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA 94720 2. Department of Bioengineering, University of California, Berkeley, CA 94720 We will present data obtained during the first year of our DOE/NASA Low Dose Radiation Research program. We utilized a comprehensive approach including transcriptomics, proteomics, phosphoproteomics, and biochemistry to characterize human mesenchymal stem cells (MSCs) in response to low dose ionizing radiation. We first determined the cell survival, proliferation, and osteogenic differentiation of

296

Geometrical Methods in Gauge Theory  

E-Print Network (OSTI)

In this work we explore the geometrical interpretation of gauge theories through the formalism of fiber bundles. Moreover, we conduct an investigation in the topology of fiber bundles, providing a proof of the Classification Theorem. In the last chapter we present some applications, such as electromagnetism and generalized Kaluza-Klein Theory.

Henrique de A. Gomes

2006-10-25T23:59:59.000Z

297

A Simple Theory for Waterspouts  

Science Conference Proceedings (OSTI)

It is shown that the simple thermodynamic theory for dust devils, proposed by Renn et al., also applies to waterspouts. The theory is based on the thermodynamics of heat engines and predicts the central pressure and the wind speed of these ...

Nilton O. Renn; Howard B. Bluestein

2001-04-01T23:59:59.000Z

298

Theory of market fluctuations  

E-Print Network (OSTI)

We propose coalescent mechanism of firms growing, driving by the supply and redistribution of external resources. We show, that it leads to Zipf distribution of firms over their sizes, which turns to stretched exponent because of size-dependent effects. We also present new approach to describe fluctuations in the market, based on separation of hot (short-time) and cold (long-time) degrees of freedoms. It predicts observable tent-like distribution of firm grow rates with the same exponent of the power tail for different time scales. The theory explains observable grow and decrease asymmetry of the distribution, and its dependence on firm size. We also calculate the uni- and bivariate probability distributions of price fluctuations in financial market. The model takes into account feedback between price expectations and the real price, and explains first time all the set of empirical data for all groups of stocks: "compass rose" and "market mill" patterns, conditional distribution, "D-smile", z-shaped response,...

Panyukov, S V

2008-01-01T23:59:59.000Z

299

Advanced biochemical processes for geothermal brines: Annual operating plan, FY 1995  

DOE Green Energy (OSTI)

An R and D program to identify methods for the utilization and/or low cost of environmentally acceptable disposal of toxic geothermal residues has been established at the Brookhaven National Laboratory (BNL). Laboratory work has shown that a biochemical process developed at BNL, would meet regulatory costs and environmental requirements. In this work, microorganisms which can convert insoluble species of toxic metals, including radionuclides, into soluble species, have been identified. These organisms serve as models in the development of a biochemical process in which toxic metals present in geothermal residual sludges are converted into water soluble species. The produced solution can be reinjected or processed further to concentrate and recover commercially valuable metals. After the biochemical detoxification of geothermal residual sludges, the end-products are non-toxic and meet regulatory requirements. The overall process is a technically and environmentally acceptable cost-efficient process. It is anticipated that the new biotechnology will reduce the cost of surface disposal of sludges derived from geothermal brines by 25% or better.

Premuzic, E.T.

1995-02-01T23:59:59.000Z

300

Biochemical technology for the detoxification of geothermal brines and the recovery of trace metals  

DOE Green Energy (OSTI)

Studies conducted at BNL, have shown that a cost-efficient and environmentally acceptable biochemical technology for detoxification of geothermal sludges is most satisfactory, as well as technically achievable. This technology is based on biochemical reactions by which certain extremophilic microorganisms interact with inorganic matrices of geothermal origin. The biochemical treatment of wastes generated by power plants using geothermal energy is a versatile technology adaptable to several applications beyond that of rendering hazardous and/or mixed wastes to non-hazardous by products, which meet regulatory requirements. This technology may be used for solubilization or recovery of a few metals to the isolation of many metals including radionuclides. In the metal recovery mode, an aqueous phase is generated which meets regulatory standards. The resulting concentrate contains valuable trace metals and salts which can be further converted into income generating products which can off-set the initial investment costs associated with the new biotechnology. In this paper, recent developments in this emerging technology will be discussed.

Premuzic, E.T.; Lin, M.S.; Lian, Hsienjen

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Duality Invariance: From M-theory to Double Field Theory  

E-Print Network (OSTI)

We show how the duality invariant approach to M-theory formulated by Berman and Perry relates to the double field theory proposed by Hull and Zwiebach. In doing so we provide suggestions as to how Ramond fields can be incorporated into the double field theory. We find that the standard dimensional reduction procedure has a duality invariant (doubled) analogue in which the gauge fields of the doubled Kaluza-Klein ansatz encode the Ramond potentials. We identify the internal gauge index of these gauge fields with a spinorial index of O(d,d).

Daniel C. Thompson

2011-06-20T23:59:59.000Z

302

Exceptional Lie algebras and M-theory  

E-Print Network (OSTI)

In this thesis we study algebraic structures in M-theory, in particular the exceptional Lie algebras arising in dimensional reduction of its low energy limit, eleven-dimensional supergravity. We focus on e8 and its infinite-dimensional extensions e9 and e10. We review the dynamical equivalence, up to truncations on both sides, between eleven-dimensional supergravity and a geodesic sigma model based on the coset E10/K(E10), where K(E10) is the maximal compact subgroup. The description of e10 as a graded Lie algebra is crucial for this equivalence. We study generalized Jordan triple systems, which are closely related to graded Lie algebras, and which may also play a role in the description of M2-branes using three-dimensional superconformal theories.

Jakob Palmkvist

2009-12-08T23:59:59.000Z

303

Thermodynamics of nano-cluster phases: a unifying theory  

E-Print Network (OSTI)

We propose a unifying, analytical theory accounting for the self-organization of colloidal systems in nano- or micro-cluster phases. We predict the distribution of cluter sizes with respect to interaction parameters and colloid concentration. In particular, we anticipate a proportionality regime where the mean cluster size grows proportionally to the concentration, as observed in several experiments. We emphasize the interest of a predictive theory in soft matter, nano-technologies and biophysics.

Nicolas Destainville; Lionel Foret

2008-04-04T23:59:59.000Z

304

Some nonrenormalizable theories are well-behaved  

E-Print Network (OSTI)

Some nonrenormalizable theories are less singular than all renormalizable theories. One can use lattice simulations to extract physical information from these nice nonrenormalizable theories. This paper discusses four nonrenormalizable theories that have finite euclidian and minkowskian Green's functions. Two of them have finite energy densities and describe scalar bosons of finite mass. The space of nonsingular nonrenormalizable theories is vast.

Kevin Cahill

2013-03-17T23:59:59.000Z

305

Activity Theory to Guide Online Collaborative Learning Instructional Design  

Science Conference Proceedings (OSTI)

Learning Management Systems LMS are facing challenges to improve its traditional focus on individual learning towards social learning. Despite the great success in distributing learning materials and managing students, the availability of the read and ... Keywords: Activity Theory, Computer-Supported Collaborative Learning, Instructional Design, Knowledge Building, Learning Management System, Online Collaborative Learning, Qualitative Method, Quantitative Method, Teachers Training

Siti Rosni Mohamad Yusoff, Nor Azan Mat Zin

2012-04-01T23:59:59.000Z

306

Theory, modeling and simulation: Annual report 1993  

SciTech Connect

Developing the knowledge base needed to address the environmental restoration issues of the US Department of Energy requires a fundamental understanding of molecules and their interactions in insolation and in liquids, on surfaces, and at interfaces. To meet these needs, the PNL has established the Environmental and Molecular Sciences Laboratory (EMSL) and will soon begin construction of a new, collaborative research facility devoted to advancing the understanding of environmental molecular science. Research in the Theory, Modeling, and Simulation program (TMS), which is one of seven research directorates in the EMSL, will play a critical role in understanding molecular processes important in restoring DOE`s research, development and production sites, including understanding the migration and reactions of contaminants in soils and groundwater, the development of separation process for isolation of pollutants, the development of improved materials for waste storage, understanding the enzymatic reactions involved in the biodegradation of contaminants, and understanding the interaction of hazardous chemicals with living organisms. The research objectives of the TMS program are to apply available techniques to study fundamental molecular processes involved in natural and contaminated systems; to extend current techniques to treat molecular systems of future importance and to develop techniques for addressing problems that are computationally intractable at present; to apply molecular modeling techniques to simulate molecular processes occurring in the multispecies, multiphase systems characteristic of natural and polluted environments; and to extend current molecular modeling techniques to treat complex molecular systems and to improve the reliability and accuracy of such simulations. The program contains three research activities: Molecular Theory/Modeling, Solid State Theory, and Biomolecular Modeling/Simulation. Extended abstracts are presented for 89 studies.

Dunning, T.H. Jr.; Garrett, B.C.

1994-07-01T23:59:59.000Z

307

Green's functions for theories with massless particles (in theory)  

E-Print Network (OSTI)

Using the method of perturbative renormalization developed by Epstein and Glaser (ibid., vol.XIX, no.3, p.211 (1973)) it is shown that Green's functions exist for theories with massless particles such as QED, and lambda : phi /sup 2n/ theories. Growth properties are given in momentum space. In the case of QED, it is also shown that one can perform the physical mass renormalization. (6 refs).

Blanchard, P

1975-01-01T23:59:59.000Z

308

Theory Seminar Schedule  

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

1-2002 1-2002 30 July 2002 Josef Speth -- Forschungszentrum Juelich j.speth@fz-juelich.de From Nuclear Physics to the Stock Market 23 May 2002 Peter Cabauy -- University of Michigan and Argonne National Lab cabauy@phy.anl.gov Quantum Computing and Cyclic Networks of Quantum Gates 15 May 2002 Andreas Nogga -- University of Arizona anogga@physics.arizona.edu Bound states of the 4N and 3N-hyperon systems 30 April 2002 Prashanth Jaikumar -- SUNY, Stony Brook jaikumar@tonic.physics.sunysb.edu Aspects of High Density QCD and Neutron Star Cooling 4 April 2002 Charles J. Horowitz -- Indiana University at Bloomington charlie@niobe.iucf.indiana.edu Parity Violating Measurements of Neutron Densities: Implications for Neutron Stars 26 March 2002 Andreas Krassnigg -- Institut fuer Theoretische Physik, Karl-Franzens-Universitaet Graz, Austria andreas.krassnigg@kfunigraz.ac.at A Relativistic Point-Form Approach to Quark-Antiquark Systems

309

A Reevaluation of Two Dispersion Theories  

Science Conference Proceedings (OSTI)

Three of the atmospheric datasets that were originally used to verity statistical dispersion theory are reevaluated. These datasets are described as well by transilient turbulence theory as by statistical theory over the range of time periods of ...

Roland Stull

1988-07-01T23:59:59.000Z

310

Argonne CNM: Theory and Modeling Research  

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

Theory and Modeling Group Leader: Stephen Gray An exciting aspect of nanoscience is the close interplay between theory and experiment. In the Theory and Modeling Group, we focus on...

311

Unstable Baroclinic Waves beyond Quasigeostrophic Theory  

Science Conference Proceedings (OSTI)

Quasigeostrophic theory is an approximation of the primitive equations in which the dynamics of geostrophically balanced motions are described by the advection of potential vorticity. Quasigeostrophic theory also represents a leading-order theory ...

Richard Rotunno; David J. Muraki; Chris Snyder

2000-10-01T23:59:59.000Z

312

THE SOGGY SADDLE THEORY OF FISSION  

E-Print Network (OSTI)

SOGGY SADDLE THEORY OF FISSION L.G. Moretto and G. GuarinoMIWW The soggy saddle theory of fission L.6. Moretto and G.transition state theory of fission is generalized to allow

Moretto, L.G.

2010-01-01T23:59:59.000Z

313

String field theory and tachyon condensation  

E-Print Network (OSTI)

In this thesis I discuss various aspects of Witten's cubic string field theory. After a brief review of the basics of string field theory we begin by showing how string field theory can be used to check certain conjectures ...

Ellwood, Ian Thomas, 1977-

2004-01-01T23:59:59.000Z

314

Analytic progress in open string field theory  

E-Print Network (OSTI)

Open string field theory provides an action functional for open string fields, and it is thus a manifestly off-shell formulation of open string theory. The solutions to the equation of motion of open string field theory ...

Kiermaier, Michael Stefan

2009-01-01T23:59:59.000Z

315

Fusion Categories and Homotopy Theory  

E-Print Network (OSTI)

We apply the yoga of classical homotopy theory to classification problems of G-extensions of fusion and braided fusion categories, where G is a finite group. Namely, we reduce such problems to classification (up to homotopy) ...

Etingof, Pavel I.

316

Social impact theory based optimizer  

Science Conference Proceedings (OSTI)

This paper introduces a novel stochastic and population-based binary optimization method inspired by social psychology. It is called Social Impact Theory based Optimization (SITO). The method has been developed with the use of some simple modifications ...

Martin Maca; Lenka Lhotsk

2007-09-01T23:59:59.000Z

317

STATISTICAL MECHANICS AND FIELD THEORY  

E-Print Network (OSTI)

1. L. 1. Schiff, Quantum Mechanics, third edition (McGraw-two-dimensional quantum mechanics problem vith a potential,Theory Methods to Statistical Mechanics Chapter I The Use of

Samuel, S.A.

2010-01-01T23:59:59.000Z

318

Argonne Physics Division - Theory Group  

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

Theory Seminar Schedule Seminars are usually held in room B-221 of the Physics Building (203) at 3:00 pm. Click on a title to read an abstract, if available (underlined). Aroow...

319

Argonne Physics Division - Theory Group  

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

XXVI Midwest Theory Get-Together, 6 & 7 September 2013. This XXVIth meeting in the series is being organised by Wayne Polyzou, polyzou@uiowa.edu from the University of Iowa, Iowa...

320

Microsoft Word - FEL theory -  

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

INTEGRAL EQUATION FOR A HIGH GAIN FEL N. A. Vinokurov * Introduction The theory of a high gain free electron laser (FEL) is now well developed (e.g., see 1). In this paper I...

Note: This page contains sample records for the topic "biochemical systems theory" 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

Information Theory and Climate Prediction  

Science Conference Proceedings (OSTI)

This paper introduces the use of information theory in characterizing climate predictability. Specifically, the concepts of entropy and transinformation are employed. Entropy measures the amount of uncertainty in our knowledge of the state of the ...

Lai-Yung Leung; Gerald R. North

1990-01-01T23:59:59.000Z

322

Legendre-Transformable Semigeostrophic Theories  

Science Conference Proceedings (OSTI)

For semigeostrophic (SG) theories derived from the Hamiltonian principles suggested by Salmon it is known that a duality exists between the physical coordinates and geopotential, on the one hand, and isentropic geostrophic momentum coordinates ...

R. J. Purser

1999-08-01T23:59:59.000Z

323

Segmental alternations and metrical theory  

E-Print Network (OSTI)

This dissertation focuses on phonological alternations that are influenced or constrained by word-internal prosody, i.e. prominence and foot structure, and what these alternations can tell us about metrical theory. Detailed ...

Vaysman, Olga

2009-01-01T23:59:59.000Z

324

Chiral Gauge Theory for Graphene  

E-Print Network (OSTI)

We construct a chiral gauge theory to describe fractionalization of fermions in graphene. Thereby we extend a recently proposed model, which relies on vortex formation. Our chiral gauge fields provide dynamics for the vortices and also couple to the fermions.

R. Jackiw; S. -Y. Pi

2007-01-30T23:59:59.000Z

325

Das Standard Modell als Theorie  

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

as a Theory as a Theory Ungelöste Rätsel Das Standard Modell als Theorie Auch wenn das Standard Modell die im Experiment beobachteten Phänomene sehr gut beschreibt, so ist es dennoch eine unvollständige Theorie. Das Problem liegt darin, dass das Standard Modell nicht erklären kann, warum einige Teilchen gerade diejenigen Eigenschaften haben, die wir beobachten. Zum Beispiel, auch wenn den Physikern die Massen aller Quarks - mit Ausnahme derjenigen des top Quarks - seit Jahren bekannt waren, so war es dennoch nicht möglich die Masse des top Quarks ohne die Hilfe experimenteller Daten genau vorherzusagen. Das ist deshalb so, weil das Standard Modell keine Erklärung dafür geben kann, warum die Liste der Teilchenmassen gerade diese Zahlenwerte aufweist.

326

Supercritical N = 2 string theory  

E-Print Network (OSTI)

The N=2 string is examined in dimensions above the critical dimension (D=4) in a linear dilaton background. We demonstrate that string states in this background propagate in a single physical time dimension, as opposed to two such dimensions present when the dilaton gradient vanishes in D=4. We also find exact solutions describing dynamical dimensional reduction and transitions from N=2 string theory to bosonic string theory via closed-string tachyon condensation.

Hellerman, Simeon

2007-01-01T23:59:59.000Z

327

A theory for comparing the expressive power of access control models  

Science Conference Proceedings (OSTI)

We present a theory for comparing the expressive power of access control models. The theory is based on simulations that preserve security properties. We perceive access control systems as state-transition systems and present two kinds of simulations, ... Keywords: Access control, access matrix, discretionary access control, expressive power, reduction, role-based access control, state-matching reduction, trust management

Mahesh V. Tripunitara; Ninghui Li

2007-04-01T23:59:59.000Z

328

Uncertainty handling in navigation services using rough and fuzzy set theory  

Science Conference Proceedings (OSTI)

Navigation services, such as used in cars, are widely used nowadays. Many applications, positioning technologies and techniques have been developed to make navigation systems easier to use. However current navigation systems suffer from different aspects ... Keywords: fuzzy set theory, location based services, navigation services, rough set theory, spatio-temporal objects, uncertainty

Anahid Basiri; Pouria Amirian; Adam Winstanley; Colin Kuntzsch; Monika Sester

2012-11-01T23:59:59.000Z

329

Spaces of Quantum Field Theories  

E-Print Network (OSTI)

The concept of a "space of quantum field theories" or "theory space" was set out in the 1970's in work of Wilson, Friedan and others. This structure should play an important role in organizing and classifying QFTs, and in the study of the string landscape, allowing us to say when two theories are connected by finite variations of the couplings or by RG flows, when a sequence of QFTs converges to another QFT, and bounding the amount of information needed to uniquely specify a QFT, enabling us to estimate their number. As yet we do not have any definition of theory space which can be used to make such arguments. In this talk, we will describe various concepts and tools which should be developed for this purpose, inspired by the analogous mathematical problem of studying the space of Riemannian manifolds. We state two general conjectures about the space of two-dimensional conformal field theories, and we define a distance function on this space, which gives a distance between any pair of theories, whether or not they are connected by varying moduli. Based on talks given at QTS6 (University of Kentucky), Erice, Texas A& M, and Northwestern University. To appear in the proceedings of QTS6.

Michael R. Douglas

2010-05-16T23:59:59.000Z

330

Thermal field theories and shifted boundary conditions  

E-Print Network (OSTI)

The analytic continuation to an imaginary velocity of the canonical partition function of a thermal system expressed in a moving frame has a natural implementation in the Euclidean path-integral formulation in terms of shifted boundary conditions. The Poincare' invariance underlying a relativistic theory implies a dependence of the free-energy on the compact length L_0 and the shift xi only through the combination beta=L_0(1+xi^2)^(1/2). This in turn implies that the energy and the momentum distributions of the thermal theory are related, a fact which is encoded in a set of Ward identities among the correlators of the energy-momentum tensor. The latter have interesting applications in lattice field theory: they offer novel ways to compute thermodynamic potentials, and a set of identities to renormalize non-perturbatively the energy-momentum tensor. At fixed bare parameters the shifted boundary conditions also provide a simple method to vary the temperature in much smaller steps than with the standard procedure.

Leonardo Giusti; Harvey B. Meyer

2013-10-29T23:59:59.000Z

331

Thermal field theories and shifted boundary conditions  

E-Print Network (OSTI)

The analytic continuation to an imaginary velocity of the canonical partition function of a thermal system expressed in a moving frame has a natural implementation in the Euclidean path-integral formulation in terms of shifted boundary conditions. The Poincare' invariance underlying a relativistic theory implies a dependence of the free-energy on the compact length L_0 and the shift xi only through the combination beta=L_0(1+xi^2)^(1/2). This in turn implies that the energy and the momentum distributions of the thermal theory are related, a fact which is encoded in a set of Ward identities among the correlators of the energy-momentum tensor. The latter have interesting applications in lattice field theory: they offer novel ways to compute thermodynamic potentials, and a set of identities to renormalize non-perturbatively the energy-momentum tensor. At fixed bare parameters the shifted boundary conditions also provide a simple method to vary the temperature in much smaller steps than with the standard procedur...

Giusti, Leonardo

2013-01-01T23:59:59.000Z

332

Theory and Computation | Center for Functional Nanomaterials  

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

Theory and Computation theory and computation Flexible computational infrastructure, software tools and theoretical consultation are provided to support modeling and understanding...

333

Theory, Modeling & Simulation | More Science | ORNL  

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

Theory, Modeling and Simulation SHARE Theory, Modeling and Simulation ORNL conducts a broad range of theoretical research in the physical sciences with over 60 staff members and...

334

Theory, Modeling & Simulation | More Science | ORNL  

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

Materials Theory and Simulation SHARE Materials Theory and Simulation ORNL conducts a broad range of theoretical research in the physical sciences with over 60 staff members and...

335

MSD Condensed Matter Theory - Argonne National Laboratories,...  

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

Home Condensed Matter Theory Condensed Matter Theory research interacts with the materials research program at ANL through a mix of individual theoretical studies and...

336

Molecular mean field theory for liquid water  

E-Print Network (OSTI)

Attractive bonding interactions between molecules typically have inherent conservation laws which influence the statistical properties of such systems in terms of corresponding sum rules. We considered lattice water as an example and enunciated the consequences of the sum rule through a general computational procedure called "Molecular mean field" theory. Fluctuations about mean field are computed and many of the liquid properties have been deduced and compared with Monte Carlo simulation, molecular dynamics and experimental results. Large correlation lengths are seen to be a consequence of the sum rule in liquid phase. Long range Coulomb interactions are shown to have minor effects on our results.

Jampa Maruthi Pradeep Kanth; Ramesh Anishetty

2010-04-09T23:59:59.000Z

337

Complex biological and bio-inspired systems  

SciTech Connect

The understanding and characterization ofthe fundamental processes of the function of biological systems underpins many of the important challenges facing American society, from the pathology of infectious disease and the efficacy ofvaccines, to the development of materials that mimic biological functionality and deliver exceptional and novel structural and dynamic properties. These problems are fundamentally complex, involving many interacting components and poorly understood bio-chemical kinetics. We use the basic science of statistical physics, kinetic theory, cellular bio-chemistry, soft-matter physics, and information science to develop cell level models and explore the use ofbiomimetic materials. This project seeks to determine how cell level processes, such as response to mechanical stresses, chemical constituents and related gradients, and other cell signaling mechanisms, integrate and combine to create a functioning organism. The research focuses on the basic physical processes that take place at different levels ofthe biological organism: the basic role of molecular and chemical interactions are investigated, the dynamics of the DNA-molecule and its phylogenetic role are examined and the regulatory networks of complex biochemical processes are modeled. These efforts may lead to early warning algorithms ofpathogen outbreaks, new bio-sensors to detect hazards from pathomic viruses to chemical contaminants. Other potential applications include the development of efficient bio-fuel alternative-energy processes and the exploration ofnovel materials for energy usages. Finally, we use the notion of 'coarse-graining,' which is a method for averaging over less important degrees of freedom to develop computational models to predict cell function and systems-level response to disease, chemical stress, or biological pathomic agents. This project supports Energy Security, Threat Reduction, and the missions of the DOE Office of Science through its efforts to accurately model biological systems at the molecular and cellular level. The project's impact encompasses applications to biofuels, to novel sensors and to materials with broad use for energy or threat reduction. The broad, interdisciplinary approach of CNLS offers the unparalleled strength of combining science backgrounds and expertise -a unique and important asset in attacking the complex science of biological organisms. This approach also allows crossfertilization, with concepts and techniques transferring across field boundaries.

Ecke, Robert E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

338

Resilience: Theory and Application.  

SciTech Connect

There is strong agreement among policymakers, practitioners, and academic researchers that the concept of resilience must play a major role in assessing the extent to which various entities - critical infrastructure owners and operators, communities, regions, and the Nation - are prepared to respond to and recover from the full range of threats they face. Despite this agreement, consensus regarding important issues, such as how resilience should be defined, assessed, and measured, is lacking. The analysis presented here is part of a broader research effort to develop and implement assessments of resilience at the asset/facility and community/regional levels. The literature contains various definitions of resilience. Some studies have defined resilience as the ability of an entity to recover, or 'bounce back,' from the adverse effects of a natural or manmade threat. Such a definition assumes that actions taken prior to the occurrence of an adverse event - actions typically associated with resistance and anticipation - are not properly included as determinants of resilience. Other analyses, in contrast, include one or more of these actions in their definitions. To accommodate these different definitions, we recognize a subset of resistance- and anticipation-related actions that are taken based on the assumption that an adverse event is going to occur. Such actions are in the domain of resilience because they reduce both the immediate and longer-term adverse consequences that result from an adverse event. Recognizing resistance- and anticipation-related actions that take the adverse event as a given accommodates the set of resilience-related actions in a clear-cut manner. With these considerations in mind, resilience can be defined as: 'the ability of an entity - e.g., asset, organization, community, region - to anticipate, resist, absorb, respond to, adapt to, and recover from a disturbance.' Because critical infrastructure resilience is important both in its own right and because of its implications for community/regional resilience, it is especially important to develop a sound methodology for assessing resilience at the asset/facility level. This objective will be accomplished by collecting data on four broadly defined groups of resilience-enhancing measures: preparedness, mitigation measures, response capabilities, and recovery mechanisms. Table ES-1 illustrates how the six components that define resilience are connected to the actions that enhance the capacity of an entity to be resilient. The relationships illustrated in Table ES-1 provide the framework for developing a survey instrument that will be used to elicit the information required to assess resilience at the asset/facility level. The resilience of a community/region is a function of the resilience of its subsystems, including its critical infrastructures, economy, civil society, governance (including emergency services), and supply chains/dependencies. The number and complexity of these subsystems will make the measurement of resilience more challenging as we move from individual assets/facilities to the community/regional level (where critical infrastructure resilience is only one component). Specific challenges include uncertainty about relationships (e.g., the composition of specific supply chains), data gaps, and time and budget constraints that prevent collection of all of the information needed to construct a comprehensive assessment of the resilience of a specific community or region. These challenges can be addressed, at least partially, by adopting a 'systems approach' to the assessment of resilience. In a systems approach, the extent to which the analysis addresses the resilience of the individual subsystems can vary. Specifically, high-level systems analysis can be used to identify the most important lower-level systems. In turn, within the most important lower-level systems, site assessment data should be collected only on the most critical asset-level components about which the least is known. Implementation of the strategies outlined here to as

Carlson, J.L.; Haffenden, R.A.; Bassett, G.W.; Buehring, W.A.; Collins, M.J., III; Folga, S.M.; Petit, F.D.; Phillips, J.A.; Verner, D.R.; Whitfield, R.G. (Decision and Information Sciences)

2012-02-03T23:59:59.000Z

339

A Coupled Theory of Tropical Climatology: Warm Pool, Cold Tongue, and Walker Circulation  

Science Conference Proceedings (OSTI)

Based on results from analytic and general circulation models, the authors propose a theory for the coupled warm pool, cold tongue, and Walker circulation system. The intensity of the coupled system is determined by the coupling strength, the ...

Zhengyu Liu; Boyin Huang

1997-07-01T23:59:59.000Z

340

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative temperature  

SciTech Connect

We conducted observations and modeling at a forest site to assess importance of biomass heat and biochemical energy storages for land-atmosphere interactions. We used the terrestrial ecosystem Fluxes And Pools Integrated Simulator (FAPIS). We first examined FAPIS performance by testing its predictions with and without biomass energy storages against measurements of surface energy and CO2 fluxes. We then evaluated the magnitudes and temporal patterns of the calculated biomass energy storages. Effects of energy storages on flux exchanges and variations of radiative temperature were investigated by contrasting FAPIS simulations with and without the storages. We found that with the storages, FAPIS predictions agreed with measurements well; without them, FAPIS performance deteriorated for all surface energy fluxes. The biomass heat storage and biochemical energy storage had clear diurnal patterns with typical ranges from -50 to 50 and -3 to 20 Wm-2, respectively; these typical ranges were exceeded substantially when there were sudden changes in atmospheric conditions. Without-storage simulations produced larger sensible and latent heat fluxes during the day but smaller fluxes (more negative values) at night as compared with with-storage simulations. Similarly, without-storage simulations had higher surface radiative temperature during the day but lower radiative temperature at night, indicating that the biomass energy storages act to dampen diurnal temperature range. Therefore, biomass heat and biochemical energy storages are an integral and substantial part of the surface energy budget and play a role in modulating land surface temperatures and must be considered in studies of land - atmosphere interactions and climate modeling.

Gu, Lianhong [ORNL; Meyers, T. P. [NOAA ATDD; Pallardy, Stephen G. [University of Missouri; Hanson, Paul J [ORNL; Yang, Bai [ORNL; Heuer, Mark [ATDD, NOAA; Hosman, K. P. [University of Missouri; Liu, Qing [ORNL; Riggs, Jeffery S [ORNL; Sluss, Daniel Wayne [ORNL; Wullschleger, Stan D [ORNL

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Sheldon Glashow, the Electroweak Theory, and the Grand Unified Theory  

Office of Scientific and Technical Information (OSTI)

Sheldon Glashow and the Electroweak Theory Sheldon Glashow and the Electroweak Theory Resources with Additional Information Sheldon Glashow Courtesy AIP Emilio Segrè Visual Archives, Segrè Collection [Sheldon] 'Glashow shared the 1979 Nobel Prize for physics with Steven Weinberg and Abdus Salam for unifying the theories of weak and electromagnetic forces. The new "electroweak" theory underlies all of particle physics and provides a framework for understanding how the early universe evolved and how the chemical elements were created. ... "Glashow's work has been instrumental in our understanding of how our universe came into being," says Lawrence R. Sulak, chairman of the Boston University physics department. "In the years since winning the prize, Glashow has helped develop the Grand Unified Theory of all particles and all forces. Its predictions led to the construction of massive underground detectors, the refinement of the unification models, the first observation of neutrinos from a supernova, and the recent discovery that neutrinos have mass. Glashow has fueled an ongoing search for rare events and exotic effects that may shed further light on the evolution of the early universe."1

342

The genesis of the quantum theory of the chemical bond  

E-Print Network (OSTI)

An historical overview is given of the relevant steps that allowed the genesis of the quantum theory of the chemical bond, starting from the appearance of the new quantum mechanics and following later developments till approximately 1931. General ideas and some important details are discussed concerning molecular spectroscopy, as well as quantum computations for simple molecular systems performed within perturbative and variational approaches, for which the Born-Oppenheimer method provided a quantitative theory accounting for rotational, vibrational and electronic states. The novel concepts introduced by the Heitler-London theory, complemented by those underlying the method of the molecular orbitals, are critically analyzed along with some of their relevant applications. Further improvements in the understanding of the nature of the chemical bond are also considered, including the ideas of one-electron and three-electron bonds introduced by Pauling, as well as the generalizations of the Heitler-London theory ...

Esposito, S

2013-01-01T23:59:59.000Z

343

Type-dependent irreversible stochastic spin models for biochemical reaction networks  

E-Print Network (OSTI)

We describe an approach to model biochemical reaction networks at the level of promotion-inhibition circuitry through a class of stochastic spin models that depart from the usual chemical kinetics setup and includes spatial and temporal density fluctuations in a most natural way. A particular but otherwise generally applicable choice for the microscopic transition rates of the models also makes them of independent interest. To illustrate the formalism, we investigate some stationary state properties of the repressilator, a synthetic three-gene network of transcriptional regulators that possesses a rich dynamical behaviour.

Mendona, J Ricardo G

2011-01-01T23:59:59.000Z

344

Theory of tokamak disruptions  

Science Conference Proceedings (OSTI)

Theoretical guidance is needed on two disruption questions: (1) When is a tokamak operating in a metastable state in which loss of control is credible (avoidance question)? (2) What is the worst credible level of destructive effects when plasma control lost and how can these effects be mitigated (effects question)? The success of ITER and the future of tokamaks as fusion systems depend on the precision with which these questions can be answered. Existing capabilities are far from those desired. Nevertheless, one can give physical constraints on the answers and scientific issues that must be addressed to provide reliable guidance. A theoretical program of moderate scale interacting with ongoing experiments could greatly advance the state of development of appropriate tools for simulating, avoiding, and mitigating disruptions.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

2012-05-15T23:59:59.000Z

345

Theory Seminar Schedule  

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

seminars held in the year 2002-2003 seminars held in the year 2002-2003 29 May 2003 Mihai Horoi Central Michigan University horoi@phy.cmich.edu No Core Shell Model Calculations of s- and p-Shell Nuclei with the Low Momentum Interaction 17 April 2003 Shannon Cowell University of Illinois cowell@students.uiuc.edu Quenching of Weak Interactions in Nucleon Matter 10 April 2003 Declan Mulhall Cal Poly, San Louis Obispo dmulhall@calpoly.edu Random interactions, order and symmetry in a simple many-fermion system 27 March 2003 Boris Kopeliovich Max-Planck-Institute High-pT Pions at RHIC: Where does the Supression Come From? 18 March 2003 Sarmistha Banik Saha Institute of Nuclear Physics, Kolkata, India Neutron Stars: Dense Matter Laboratories 13 March 2003 Nicole Bell Fermilab nfb@fnal.gov

346

Theory Seminar Schedule  

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

5-2006 5-2006 Click on a title to read an abstract, if available (underlined). 30 May 2006 Special Day: Tuesday Dean J. Lee North Carolina State University djlee3@unity.ncsu.edu A new type of superfluid 25 May 2006 José Goity Hampton University & Jefferson Lab goity@jlab.org The 1/Nc Expansion in Baryons 23 May 2006 Special Day and Time: Tuesday, 10:30am Bogdan Mihaila Los Alamos National Laboratory bmihaila@lanl.gov Solving the effective interaction puzzle in ultracold fermionic atom gases April 27th 2006 Robin Santra Argonne National Laboratory (CHM) rsantra@anl.gov Calculating resonances using a complex absorbing potential 3 April 2006 Special Day and Time: Monday, 10:30am Huang Fei Institute for High Energy Physics, Beijing hfbin@mail.ihep.ac.cn Resonating group method study of baryon-meson systems in a chiral quark model

347

Parity violating quantum kinetic theory in (2+1)-dimensions  

E-Print Network (OSTI)

We study the kinetic theory for a (2+1)-dimensional fermionic system with special emphasis on the parity violating properties associated with the fermion mass. The Wigner function approach is used to derive hydrodynamical transport coefficients to the first spatial derivative order. As a first attempt, the collisions between fermions are neglected. The resulting system is dissipationless. The parity violating Hall electric conductivity has the same temperature and chemical potential dependence as the quantum field theory result at one-loop. Vorticity dependent transport properties, which were not considered before, also emerge naturally in this approach.

Jiunn-Wei Chen; Jian-Hua Gao; Juan Liu; Shi Pu; Qun Wang

2013-05-08T23:59:59.000Z

348

MHK Projects/Modeling the Physical and Biochemical Influence of Ocean  

Open Energy Info (EERE)

Modeling the Physical and Biochemical Influence of Ocean Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":21.9,"lon":158.75,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

349

Lattice QCD and String Theory  

E-Print Network (OSTI)

Bosonic string formation in gauge theories is reviewed with particular attention to the confining flux in lattice QCD and its string theory description. Recent results on the Casimir energy of the ground state and the string excitation spectrum are analyzed in the Dirichlet string limit of large separation between static sources. The closed string-soliton (torelon) with electric flux winding around a compact dimension and the three-string with a Y-junction created by three static sources are also reviewed. It is shown that string spectra from lattice simulations are consistent with universal predictions of the leading operators from the derivative expansion of a Poincare invariant effective string Lagrangian with reparameterization symmetry. Important characterisitics of the confining flux, like stiffness and the related massive breather modes, are coded in operators with higher derivatives and their determination remains a difficult challenge for lattice gauge theory.

Julius Kuti

2005-11-08T23:59:59.000Z

350

Free Energy of ABJM Theory  

E-Print Network (OSTI)

The free energy of ABJM theory has previously been computed in the strong and weak coupling limits. In this note, we report on results for the computation of the first non-vanishing quantum correction to the free energy, from the field theory side. The correction can be expressed in terms of a thermal mass for the scalar fields. This mass vanishes to 1-loop order, but there is a non-vanishing result to 2-loop order. Hence, the leading correction to the free energy is non-analytic in the 't Hooft coupling constant lambda. The reason is that the infrared divergences necessitate a resummation of ring diagrams and a related reorganization of perturbation theory, in which already the leading correction receives contributions from all orders in lambda. These results suggest that the free energy interpolates smoothly between weak and strong coupling.

Mikael Smedbck

2011-03-24T23:59:59.000Z

351

Design and fabrication of a microfluidies gradient generator system for high-throughput molecular interaction studies  

E-Print Network (OSTI)

Design and fabrication of a microfluidics system capable of generating reproducible and controlled micro-biochemical environments that can be used as a diagnostic assay and microreactor is important. Here, a simple technique ...

Chen, Guan-Jong, 1981-

2004-01-01T23:59:59.000Z

352

Heavy ions and string theory  

E-Print Network (OSTI)

We review a selection of recent developments in the application of ideas of string theory to heavy ion physics. Our topics divide naturally into equilibrium and non-equilibrium phenomena. On the non-equilibrium side, we discuss generalizations of Bjorken flow, numerical simulations of black hole formation in asymptotically anti-de Sitter geometries, equilibration in the dual field theory, and hard probes. On the equilibrium side, we summarize improved holographic QCD, extraction of transport coefficients, inclusion of chemical potentials, and approaches to the phase diagram. We close with some possible directions for future research.

Oliver DeWolfe; Steven S. Gubser; Christopher Rosen; Derek Teaney

2013-04-29T23:59:59.000Z

353

Quantum field theory without divergences  

E-Print Network (OSTI)

It is shown that loop divergences emerging in the Green functions in quantum field theory originate from correspondence of the Green functions to {\\em unmeasurable} (and hence unphysical) quantities. This is because no physical quantity can be measured in a point, but in a region, the size of which is constrained by the resolution of measuring equipment. The incorporation of the resolution into the definition of quantum fields $\\phi(x)\\to\\phi^{(A)}(x)$ and appropriate change of Feynman rules results in finite values of the Green functions. The Euclidean $\\phi^4$-field theory is taken as an example.

Altaisky, M V

2010-01-01T23:59:59.000Z

354

Quantum field theory without divergences  

E-Print Network (OSTI)

It is shown that loop divergences emerging in the Green functions in quantum field theory originate from correspondence of the Green functions to {\\em unmeasurable} (and hence unphysical) quantities. This is because no physical quantity can be measured in a point, but in a region, the size of which is constrained by the resolution of measuring equipment. The incorporation of the resolution into the definition of quantum fields $\\phi(x)\\to\\phi^{(A)}(x)$ and appropriate change of Feynman rules results in finite values of the Green functions. The Euclidean $\\phi^4$-field theory is taken as an example.

M. V. Altaisky

2010-02-12T23:59:59.000Z

355

Principles of Arrangement Field Theory  

E-Print Network (OSTI)

In this paper I attempt to summarize the fundamental principles which underlie to Arrangement Field Theory. In my intention the exposition would be the most possible intelligible and self-contained. However the exposed concepts are revisited in the light of the new researches, so that they could appear slightly different than in the previous works. Much emphasis is posed here to the power of theory to predict the number of fermionic families (flavours) and space-time dimensions. I also give a quick glance to the entanglement phenomenon and its interpretation as microscopic wormhole.

Diego Marin

2012-07-07T23:59:59.000Z

356

Evaluation of systems usability  

Science Conference Proceedings (OSTI)

Motivation -- Development of complex system interfaces can benefit, in addition to the traditional safety focused evaluation, also from a usability approach to evaluation of system performance. But as the users, the information system, and the ... Keywords: activity theory, complex systems, joint cognitive systems, usability evaluation

Paula Savioja; Leena Norros; Leena Salo

2008-01-01T23:59:59.000Z

357

Effective theory for deformed nuclei  

E-Print Network (OSTI)

Techniques from effective field theory are applied to nuclear rotation. This approach exploits the spontaneous breaking of rotational symmetry and the separation of scale between low-energy Nambu-Goldstone rotational modes and high-energy vibrational and nucleonic degrees of freedom. A power counting is established and the Hamiltonian is constructed at next-to-leading order.

Papenbrock, T

2010-01-01T23:59:59.000Z

358

"Chromatic" homotopy theory Haynes Miller  

E-Print Network (OSTI)

of large but finite dimension. Chro- matic homotopy theory is an organizing principle which is highly devel Hq+n(n K) = Hq(K) By functoriality, there are maps [K, L] [K, L] [2 K, 2 L] · · · and these maps

Miller, Haynes

359

Asymptotically Free Gauge Theories. I  

DOE R&D Accomplishments (OSTI)

Asymptotically free gauge theories of the strong interactions are constructed and analyzed. The reasons for doing this are recounted, including a review of renormalization group techniques and their application to scaling phenomena. The renormalization group equations are derived for Yang-Mills theories. The parameters that enter into the equations are calculated to lowest order and it is shown that these theories are asymptotically free. More specifically the effective coupling constant, which determines the ultraviolet behavior of the theory, vanishes for large space-like momenta. Fermions are incorporated and the construction of realistic models is discussed. We propose that the strong interactions be mediated by a "color" gauge group which commutes with SU(3)xSU(3). The problem of symmetry breaking is discussed. It appears likely that this would have a dynamical origin. It is suggested that the gauge symmetry might not be broken, and that the severe infrared singularities prevent the occurrence of non-color singlet physical states. The deep inelastic structure functions, as well as the electron position total annihilation cross section are analyzed. Scaling obtains up to calculable logarithmic corrections, and the naive lightcone or parton model results follow. The problems of incorporating scalar mesons and breaking the symmetry by the Higgs mechanism are explained in detail.

Wilczek, Frank; Gross, David J.

1973-07-00T23:59:59.000Z

360

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

Fialkovsky, I V

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

I. V. Fialkovsky; D. V. Vassilevich

2011-11-13T23:59:59.000Z

362

Moriond Electroweak 2006: Theory summary  

SciTech Connect

A concise look at the big picture of particle physics, including the status of the Standard Model, neutrinos, supersymmetry, extra dimensions and cosmology. Based upon the theoretical summary presented at the XLIst Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, 11-18 March 2006.

Lykken, Joseph D.; /Fermilab

2006-07-01T23:59:59.000Z

363

Computers for Lattice Field Theories  

E-Print Network (OSTI)

Parallel computers dedicated to lattice field theories are reviewed with emphasis on the three recent projects, the Teraflops project in the US, the CP-PACS project in Japan and the 0.5-Teraflops project in the US. Some new commercial parallel computers are also discussed. Recent development of semiconductor technologies is briefly surveyed in relation to possible approaches toward Teraflops computers.

Y. Iwasaki

1994-01-26T23:59:59.000Z

364

Dialectical theory for multi-agent assumption-based planning  

Science Conference Proceedings (OSTI)

The purpose of this paper is to introduce a dialectical theory for plan synthesis based on a multi-agent approach. This approach is a promising way to devise systems based on agent planners in which the production of a global shared plan is obtained ...

Damien Pellier; Humbert Fiorino

2005-09-01T23:59:59.000Z

365

Mathematical theory of redundancy based on formal neuron model  

Science Conference Proceedings (OSTI)

Objective of the article is creation of the new methods for the binary information channels redundancy theory based on formal neuron model and development of statistic modeling algorithms and programs of computing systems, containing such channels, quorum ... Keywords: binary signal, decision, distribution of probabilities, formal neuron, method of optimization, optimal weight, threshold redundancy

Archil Elizbarashvili; Oleg Namicheichvili

2009-06-01T23:59:59.000Z

366

Detecting fake websites: the contribution of statistical learning theory  

Science Conference Proceedings (OSTI)

Fake websites have become increasingly pervasive, generating billions of dollars in fraudulent revenue at the expense of unsuspecting Internet users. The design and appearance of these websites makes it difficult for users to manually identify them as ... Keywords: design science, fake website detection, information systems development, internet fraud, statistical learning theory, website classification

Ahmed Abbasi; Zhu Zhang; David Zimbra; Hsinchun Chen; Jay F. Nunamaker

2010-09-01T23:59:59.000Z

367

ERGODIC THEORY OF PARABOLIC HORSESHOES MARIUSZ URBANSKI AND CHRISTIAN WOLF  

E-Print Network (OSTI)

ERGODIC THEORY OF PARABOLIC HORSESHOES MARIUSZ URBA´NSKI AND CHRISTIAN WOLF Abstract. In this paper parabolic fixed point and possibly also on Ws (). We call f a parabolic horseshoe map. In order to analyze the pressure function to the pressure of an embedded parabolic iterated function system and to apply

Wolf, Christian

368

Slotted-circus: a UTP-family of reactive theories  

Science Conference Proceedings (OSTI)

We present a generic framework of UTP theories for describing systems whose behaviour is characterised by regular time-slots, compatible with the general structure of the Circus language [WC01a]. This "slotted-Circus" framework is parameterised by the ...

Andrew Butterfield; Adnan Sherif; Jim Woodcock

2007-07-01T23:59:59.000Z

369

Dynamic microscopic theory of fusion using DC-TDHF  

Science Conference Proceedings (OSTI)

The density-constrained time-dependent Hartree-Fock (DC-TDHF) theory is a fully microscopic approach for calculating heavy-ion interaction potentials and fusion cross sections below and above the fusion barrier. We discuss recent applications of DC-TDHF method to fusion of light and heavy systems.

Umar, A. S.; Oberacker, V. E.; Keser, R.; Maruhn, J. A.; Reinhard, P.-G. [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); RTE University, Science and Arts Faculty, Department of Physics, 53100, Rize (Turkey); Institut fuer Theoretische Physik, Goethe-Universitaet, D-60438 Frankfurt am Main (Germany); Institut fur Theoretische Physik, Universitat Erlangen, D-91054 Erlangen (Germany)

2012-10-20T23:59:59.000Z

370

Perturbation theory of solid-liquid interfacial free energies of bcc metals  

Science Conference Proceedings (OSTI)

A perturbation theory is used to calculate bcc solid-liquid interfacial free energies of metallic systems with embedded-atom model potentials. As a reference system for bcc crystals we used a single-occupancy cell, hard-sphere bcc system. Good agreements between the perturbation theory results and the corresponding results from simulations are found. The strategy to extract hard-sphere bcc solid-liquid interfacial free energies may have broader applications for other crystal lattices.

Warshavsky, Vadim B.; Song, Xueyu

2012-09-18T23:59:59.000Z

371

Recent advances in biochemical technology for the processing of geothermal byproducts  

SciTech Connect

Laboratory studies has shown the biochemical technology for treating brines/sludges generated in geothermal electric powerproduction to be promising, cost-efficient, and environmentally acceptable. For scaled-up field use, the new technology depends on the chemistry of the geothermal resources which influences choice of plant design and operating strategy. Latter has to be adaptable to high/low salinity, temperatures, quantity to be processed, and chemistry of brines and byproducts. These variables are of critical and economic importance in areas such as the Geysers and Salton Sea. The brines/sludges can also be converted into useful products. In a joint effort between industrial collaborators and BNL, several engineered processes for treating secondary and other byproducts from geothermal power production are being tested. In terms of field applications, there are several options. Some of these options are presented and discussed.

Premuzic, E.T.; Lin, M.S.; Lian, L.

1996-04-01T23:59:59.000Z

372

Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns  

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

Two Two poplar methyl salicylate esterases display comparable biochemical properties but divergent expression patterns Nan Zhao a , Ju Guan a , Farhad Forouhar b , Timothy J. Tschaplinski c , Zong-Ming Cheng a , Liang Tong b , Feng Chen a, * a Department of Plant Sciences, University of Tennessee, 252 Ellington Plant Science Bldg., 2431 Joe Johnson Drive, Knoxville, TN 37996, USA b Department of Biological Sciences, Northeast Structural Genomics Consortium, Columbia University, New York, NY 10027, USA c Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA a r t i c l e i n f o Article history: Received 3 June 2008 Received in revised form 27 October 2008 Available online 10 January 2009 Keywords: Black cottonwood Populus trichocarpa Methyl esterase SABP2 Methyl salicylate Salicylic acid Gene family Molecular modeling a b s t r a c t Two genes encoding proteins

373

Topics in Noncommutative Gauge Theories and Deformed Relativistic Theories  

E-Print Network (OSTI)

This is my PhD thesis. In this thesis we study the gauge theories on noncommutative Moyal space. We find new static solitons and instantons in terms of the so called generalized Bose operators. Generalized Bose operators are constructed to describe reducible representation of the oscillator algebra. They create/annihilate $k$-quanta, $k$ being a positive integer. We start with giving an alternative description to the already found static magnetic flux tube solutions of the noncommutative gauge theories in terms of generalized Bose operators. The Nielsen-Olesen vortex solutions found in terms of these operators reduce to the already found ones. On the contrary we find a class of new instaton solutions which are unitarily inequivalant to the the ones found from ADHM construction on noncommutative space. The charge of the instaton has a description in terms of the index representing the reducibility of the Fock space, i.e., $k$. After studying the static solitonic solutions in noncommutative Minkowski space and the instaton solutions in noncommutative Euclidean space we go on to study the implications of the time-space noncommutativity in Minkowski space. To understand it properly we study the time-dependent transitions of a forced harmonic oscillator in noncommutative 1+1 dimensional spacetime. We also try to understand the implications of the found results in the context of quantum optics. We then shift to the so called DSR theories which are related to a different kind of noncommutative ($\\kappa$-Minkowski) space. DSR (Doubly/Deformed Special Relativity) aims to search for an alternate relativistic theory which keeps a length/energy scale (the Planck scale) and a velocity scale (the speed of light scale) invariant. We study thermodynamics of an ideal gas in such a scenario.

Nitin Chandra

2013-01-17T23:59:59.000Z

374

Relationships between Beef Postharvest Biochemical Factors and Warner-Bratzler Shear Force  

E-Print Network (OSTI)

Biochemical changes in muscle postmortem have been associated with initial beef tenderness early postmortem, and with improvements in tenderness during postmortem storage, defined as meat aging. Differences in the initial contractile state of the sarcomere, the ionic environment of the sarcoplasm including pH, the activity of neutral proteolytic enzymes, and collagen content and solubility have been associated with beef tenderness. In Phase I, steaks from four genetic lines of steers and heifers were used to understand the biochemical differences between tough and tender steaks. The most tender ( 0.05) between tough and tender steaks. Sodium concentration at 10 d was higher (P = 0.03) in tough steaks, but only account for 0.05% of the variation in WBS at 3d. Tender steaks had less (P = 0.04) intact desmin at 24h, but intact desmin was not correlated (P > 0.05) with WBS. In Phase II, tough steaks after 3, 10, and 17d postmortem had higher (P 0.05) between tough and tender steaks. Tender steaks had less (P < 0.0001) intact desmin at 17d postmortem than tough steaks. Intact desmin at 17d was responsible for 4%, 47%, and 30% of WBS variation after 3, 10, and 17d postmortem, respectively. The slight difference in marbling and quality grade did not account for a significant amount of variation in WBS. However, meat color and pH accounted for variation in shear WBS. Calcium flux may have influenced meat tenderness by activation of calpains and may have altered protein to protein interactions. Results suggested that marbling, calpain activity, and desmin degradation, and to a lesser extent pH and meat color contributed to meat tenderness.

Orozco Hernandez, Pilar

2013-05-01T23:59:59.000Z

375

Network Multibaker Maps, Information Theory and Stochastic Thermodynamics  

E-Print Network (OSTI)

Stochastic thermodynamics (ST) summarizes recent advances in nonequilibrium statistical mechanics of systems featuring local thermodynamic equilibrium. However, the mathematical description of ST is largely independent of this thermodynamic context. Here, we introduce novel network multibaker maps as a model system for reversible, chaotic dynamics. As a result, the mathematical formalism of ST emerges from information theory, and is shown to be consistent with previous work.

Bernhard Altaner; Jrgen Vollmer

2012-12-19T23:59:59.000Z

376

Theory  

Science Conference Proceedings (OSTI)

Table 4   Line intensity...Identification (qualitative analyses) d-I search/match (PDF Hanawalt) Intensity changes with element substitution Crystal structure analysis Differences in fine grained state from single crystal state Structures of materials which only occur in fine grained state Quantitative analysis Phase...

377

Exact-exchange density functional theory for neutron drops  

Science Conference Proceedings (OSTI)

We compute the ground-state properties of finite systems of neutrons in an external harmonic trap, interacting via the Minnesota potential, using the ''exact-exchange'' form of orbital-dependent density functional theory. We compare our results with Hartree-Fock calculations and find very close agreement. Within the context of the interaction studied, we conclude that this simple orbital-dependent functional brings conventional nuclear density functional theory to the level of Hartree-Fock in an ab initio fashion. Our work is a first step toward higher order ab initio nuclear functionals based on realistic nucleon-nucleon interactions.

Drut, Joaquin E. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545-0001 (United States); Department of Physics, Ohio State University, Columbus, Ohio 43210-1117 (United States); Platter, Lucas [Fundamental Physics, Chalmers University of Technology, SE-41296 Goeteborg (Sweden); Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States); Department of Physics, Ohio State University, Columbus, Ohio 43210-1117 (United States)

2011-07-15T23:59:59.000Z

378

Loop Quantum Theory Applied to Biology and Nonlinear Whole Biology  

E-Print Network (OSTI)

The loop quantum theory, which constitutes a very small discontinuous space, as new method is applied to biology. The model of protein folding and lungs is proposed. In the model, some known results are used, and four approximate conclusions are obtained: their structures are quantized, their space regions are finite, various singularities correspond to folding and crossed points, and different types of catastrophe exist. Further, based on the inseparability and correlativity of the biological systems, the nonlinear whole biology is proposed, and four basic hypotheses are formed. It may unify reductionism and holism, structuralism and functionalism. Finally, the medical meaning of the theory is discussed briefly.

Yi-Fang Chang

2008-01-02T23:59:59.000Z

379

Quantum theory of cold bosonic atoms in optical lattices  

SciTech Connect

Ultracold atoms in optical lattices undergo a quantum phase transition from a superfluid to a Mott insulator as the lattice potential depth is increased. We describe an approximate theory of interacting bosons in optical lattices which provides a qualitative description of both superfluid and insulator states. The theory is based on a change of variables in which the boson coherent state amplitude is replaced by an effective potential which promotes phase coherence between different number states on each lattice site. It is illustrated here by applying it to uniform and fully frustrated lattice cases but is simple enough that it can be applied to spatially inhomogeneous lattice systems.

Tilahun, Dagim [Department of Physics, University of Texas at Austin, Austin, Texas 78712 (United States); Department of Physics, Texas State University, San Marcos, Texas 78666 (United States); Duine, R. A. [Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, NL-3584 CE Utrecht (Netherlands); MacDonald, A. H. [Department of Physics, University of Texas at Austin, Austin, Texas 78712 (United States)

2011-09-15T23:59:59.000Z

380

Band-trap capture and emission in the generalized kinetic theory of electrons and holes  

E-Print Network (OSTI)

of the applications. These assumptions amount to discard the kinetic equation for phonons, and to replace np The Boltzmann Equation and its Applications (New York: Springer Verlag). [8] Spiga G 1992 On extended kinetic theory with chemical reaction Nonlinear Kinetic Theory and Mathematical Aspects of Hyperbolic Systems ed

Spiga, Giampiero

Note: This page contains sample records for the topic "biochemical systems theory" 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

Optimized local basis set for Kohn-Sham density functional theory  

Science Conference Proceedings (OSTI)

We develop a technique for generating a set of optimized local basis functions to solve models in the Kohn-Sham density functional theory for both insulating and metallic systems. The optimized local basis functions are obtained by solving a minimization ... Keywords: Discontinuous Galerkin, Electronic structure, GMRES, Kohn-Sham density functional theory, Molecular dynamics, Optimized local basis set, Preconditioning, Pulay force, Trace minimization

Lin Lin; Jianfeng Lu; Lexing Ying; Weinan E

2012-05-01T23:59:59.000Z

382

Diffeomorphisms in group field theories  

SciTech Connect

We study the issue of diffeomorphism symmetry in group field theories (GFT), using the noncommutative metric representation introduced by A. Baratin and D. Oriti [Phys. Rev. Lett. 105, 221302 (2010).]. In the colored Boulatov model for 3d gravity, we identify a field (quantum) symmetry which ties together the vertex translation invariance of discrete gravity, the flatness constraint of canonical quantum gravity, and the topological (coarse-graining) identities for the 6j symbols. We also show how, for the GFT graphs dual to manifolds, the invariance of the Feynman amplitudes encodes the discrete residual action of diffeomorphisms in simplicial gravity path integrals. We extend the results to GFT models for higher-dimensional BF theories and discuss various insights that they provide on the GFT formalism itself.

Baratin, Aristide [Triangle de la Physique, CPHT Ecole Polytechnique, IPhT Saclay, LPT Orsay and Laboratoire de Physique Theorique, CNRS UMR 8627, Universite Paris XI, F-91405 Orsay Cedex (France); Girelli, Florian [School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia); Oriti, Daniele [Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Am Muehlenberg 1, 14467 Golm (Germany)

2011-05-15T23:59:59.000Z

383

Theory of magnetoresistance in multilayers  

Science Conference Proceedings (OSTI)

Recently it has been found that metallic multilayer films exhibit novel phenomena, particularly giant magnetoresistance in Fe/Cr, Co/Cu, Co/Cu/NiFe/Cu, and other multilayers. In this review, the authors explicate the theory of the giant magnetoresistance effect, placing emphasis on its mechanism and dependence on the constituent materials of multilayers. Some relations between the giant magnetoresistance, the electrical resistivity of the magnetic alloys, and the anisotropic magnetoresistance are also discussed.

Inoue, J.; Maekawa, S. (Nagoya Univ. (Japan))

1993-06-01T23:59:59.000Z

384

A unified theory of superconductivity  

E-Print Network (OSTI)

In this paper, we study the reliability of BCS theory as a scientific explanation of the mystery of superconductivity. It is shown clearly that the phonon-mediated BCS theory is fundamentally incorrect. Two kinds of glues, pairing (pseudogap) glue and superconducting glue, are suggested based on a real space Coulomb confinement effect. The scenarios provide a unified explanation of the pairing symmetry, pseudogap and superconducting states, charge stripe order, spin density wave (SDW), checkerboard-type charge-ordered phase, magic doping fractions and vortex structures in conventional and unconventional (the high-Tc cuprates and MgB2) superconductors. The theory agrees with the existence of a pseudogap in high-temperature superconductors, while no pseudogap feature could be observed in MgB2 and most of the conventional superconductors. Our results indicate that the superconducting phase can coexist with a inclined hexagonal vortex lattice in pure MgB2 single crystal with a charge carrier density ps=1.49*10^{22}/cm^{3}. Finally, the physical reasons why the good conductors (for example, Ag, Au, and Cu) and the overdoped high-Tc superconductors are non-superconducting are also explored.

Xiuqing Huang

2008-04-10T23:59:59.000Z

385

Identification of Catalysts and Materials for a High-Energy Density Biochemical Fuel Cell: Cooperative Research and Development Final Report, CRADA Number CRD-09-345  

DOE Green Energy (OSTI)

The proposed research attempted to identify novel biochemical catalysts, catalyst support materials, high-efficiency electron transfer agents between catalyst active sites and electrodes, and solid-phase electrolytes in order to maximize the current density of biochemical fuel cells that utilize various alcohols as substrates.

Ghirardi, M.; Svedruzic, D.

2013-07-01T23:59:59.000Z

386

A Simple Thermodynamical Theory for Dust Devils  

Science Conference Proceedings (OSTI)

Based on the heat engine framework, a simple scaling theory for dust devils is proposed and compared to observations. This theory provides a simple physical interpretation for many of the observed characteristics of dust devils. In particular, it ...

Nilton O. Renn; Matthew L. Burkett; Matthew P. Larkin

1998-11-01T23:59:59.000Z

387

Translational-invariant noncommutative gauge theory  

Science Conference Proceedings (OSTI)

A generalized translational-invariant noncommutative field theory is analyzed in detail, and a complete description of translational-invariant noncommutative structures is worked out. The relevant gauge theory is described, and the planar and nonplanar axial anomalies are obtained.

Ardalan, F. [Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics (IPM), School of Physics, P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Sadooghi, N. [Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran (Iran, Islamic Republic of)

2011-01-15T23:59:59.000Z

388

Scissors congruence and K-theory  

E-Print Network (OSTI)

In this thesis we develop a version of classical scissors congruence theory from the perspective of algebraic K-theory. Classically, two polytopes in a manifold X are defined to be scissors congruent if they can be decomposed ...

Zakharevich, Inna (Inna Ilana)

2012-01-01T23:59:59.000Z

389

Northern Winter Stationary Waves: Theory and Modeling  

Science Conference Proceedings (OSTI)

A review is provided of stationary wave theory, the theory for the deviations from zonal symmetry of the climate. To help focus the discussion the authors concentrate exclusively on northern winter. Several theoretical issues, including the ...

Isaac M. Held; Mingfang Ting; Hailan Wang

2002-08-01T23:59:59.000Z

390

Quantum Mechanics and Representation Theory Columbia University  

E-Print Network (OSTI)

Quantum Mechanics and Representation Theory Peter Woit Columbia University Texas Tech, November 21 2013 Peter Woit (Columbia University) Quantum Mechanics and Representation Theory November 2013 1 / 30 #12;Does Anyone Understand Quantum Mechanics? "No One Understands Quantum Mechanics" "I think

Woit, Peter

391

Seeking String Theory in the Cosmos  

E-Print Network (OSTI)

We review the existence, formation and properties of cosmic strings in string theory, the wide variety of observational techniques that are being employed to detect them, and the constraints that current observations impose on string theory models.

Copeland, Edmund J; Vachaspati, Tanmay

2011-01-01T23:59:59.000Z

392

Fast library for number theory: an introduction  

Science Conference Proceedings (OSTI)

We discuss FLINT (Fast Library for Number Theory), a library to support computations in number theory, including highly optimised routines for polynomial arithmetic and linear algebra in exact rings.

William B. Hart

2010-09-01T23:59:59.000Z

393

J. Math. Biol. DOI 10.1007/s00285-006-0043-9 Mathematical Biology Mathematical and theoretical biology for systems biology, and then...vice versa  

E-Print Network (OSTI)

Systems Biology has two roots (1). The better known resides in Molecular Biology, grew to functional genomics and then became top-down, genomewide Systems Biology. The less-publicized root resides in theoretical and Mathematical Biology, with topics such as non-equilibrium thermodynamics, self-organization, kinetic modelling, metabolic control analysis, flux analysis and biochemical systems theory, culminating in genome-wide versions thereof. It is anticipated that from these roots a Biology of unprecedented strength and quality will emerge, which ends the deadlocks of functional genomics drowning in its oceans of data and of Mathematical Biology escaping reality. Much of the growth in Systems Biology has bypassed Mathematical and Theoretical Biology. Only at the 2005 ESMTB meeting in Dresden did the surge in Systems Biology activity seen in molecular cell biology, begin to be mirrored by a similar surge in Mathematical Biology. Until then, the more theoretical activities in Systems Biology involved engineers much more than mathematicians. Why has this been the case? Systems Biology is well-defined and broad at the same time, not unlike Mathematical Biology. It is the science that studies how functional biological properties arise in the interactions of components (2,

Hans V. Westerhoff; H. V. Westerhoff (b

2006-01-01T23:59:59.000Z

394

Sound damping constant for generalized theories of gravity  

Science Conference Proceedings (OSTI)

The near-horizon metric for a black brane in anti-de Sitter space and the metric near the AdS boundary both exhibit hydrodynamic behavior. We demonstrate the equivalence of this pair of hydrodynamic systems for the sound mode of a conformal theory. This is first established for Einstein's gravity, but we then show how the sound damping constant will be modified from its Einstein form for a generalized theory. The modified damping constant is expressible as the ratio of a pair of gravitational couplings that are indicative of the sound-channel class of gravitons. This ratio of couplings differs from both that of the shear diffusion coefficient and the shear viscosity to entropy ratio. Our analysis is mostly limited to conformal theories, but suggestions are made as to how this restriction might eventually be lifted.

Brustein, Ram [Department of Physics, Ben-Gurion University, Beer-Sheva, 84105 (Israel); Medved, A. J. M. [Physics Department, University of Seoul, Seoul 130-743 (Korea, Republic of)

2009-06-15T23:59:59.000Z

395

Scaling Theory and Numerical Simulations of Aerogel Sintering  

E-Print Network (OSTI)

A simple scaling theory for the sintering of fractal aerogels is presented. The densification at small scales is described by an increase of the lower cut-off length a accompanied by a decrease of the upper cut-off length ?, in order to conserve the total mass of the system. Scaling laws are derived which predict how a, ? and the specific pore surface area ? should depend on the density ?. Following the general ideas of the theory, numerical simulations of sintering are proposed starting from computer simulations of aerogel structure based on a diffusion-limited cluster-cluster aggregation gelling process. The numerical results for a, ? and ? as a function of ? are discussed according to the initial aerogel density. The scaling theory is only fully recovered in the limit of very low density where the original values of a and ? are well separated. These numerical results are compared with experiments on partially densified aerogels.

Rmi Jullien; Nathalie Olivi-tran; Anwar Hasmy; Thierry Woignier; Daniel Bourret; Robert Sempr

2008-01-01T23:59:59.000Z

396

Hydrodynamic gradient expansion in gauge theory plasmas  

E-Print Network (OSTI)

We utilize the fluid-gravity duality to investigate the large order behavior of hydrodynamic gradient expansion of the dynamics of a gauge theory plasma system. This corresponds to the inclusion of dissipative terms and transport coefficients of very high order. Using the dual gravity description, we calculate numerically the form of the stress tensor for a boost-invariant flow in a hydrodynamic expansion up to terms with 240 derivatives. We observe a factorial growth of gradient contributions at large orders, which indicates a zero radius of convergence of the hydrodynamic series. Furthermore, we identify the leading singularity in the Borel transform of the hydrodynamic energy density with the lowest nonhydrodynamic excitation corresponding to a `nonhydrodynamic' quasinormal mode on the gravity side.

Michal P. Heller; Romuald A. Janik; Przemyslaw Witaszczyk

2013-02-04T23:59:59.000Z

397

Hydrogen atom in Palatini theories of gravity  

E-Print Network (OSTI)

We study the effects that the gravitational interaction of $f(R)$ theories of gravity in Palatini formalism has on the stationary states of the Hydrogen atom. We show that the role of gravity in this system is very important for lagrangians $f(R)$ with terms that grow at low curvatures, which have been proposed to explain the accelerated expansion rate of the universe. We find that new gravitationally induced terms in the atomic Hamiltonian generate a strong backreaction that is incompatible with the very existence of bound states. In fact, in the 1/R model, Hydrogen disintegrates in less than two hours. The universe that we observe is, therefore, incompatible with that kind of gravitational interaction. Lagrangians with high curvature corrections do not lead to such instabilities.

Gonzalo J. Olmo

2008-02-27T23:59:59.000Z

398

Spatially Resolved Porous Electrode Theory for Rechargeable ...  

Science Conference Proceedings (OSTI)

Symposium, Nanostructured Materials for Lithium Ion Batteries and for Supercapacitors. Presentation Title, Spatially Resolved Porous Electrode Theory for...

399

Supersymmetric extensions of K field theories  

E-Print Network (OSTI)

We review the recently developed supersymmetric extensions of field theories with non-standard kinetic terms (so-called K field theories) in two an three dimensions. Further, we study the issue of topological defect formation in these supersymmetric theories. Specifically, we find supersymmetric K field theories which support topological kinks in 1+1 dimensions as well as supersymmetric extensions of the baby Skyrme model for arbitrary nonnegative potentials in 2+1 dimensions.

Adam, C; Sanchez-Guillen, J; Wereszczynski, A

2012-01-01T23:59:59.000Z

400

Quantum Theory Event-Probability Interpretation  

Science Conference Proceedings (OSTI)

In this article the propagation of pointlike event probabilities in space is considered. New interpretation of Quantum Theory is formulated.

Quznetsov, Gunn [Chelyabinsk State University, Chelyabinsk, Ural (Russian Federation)

2011-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

1994 International Sherwood Fusion Theory Conference  

SciTech Connect

This report contains the abstracts of the paper presented at the 1994 International Sherwood Fusion Theory Conference.

NONE

1994-04-01T23:59:59.000Z

402

A solution manual for Polchinski's "String Theory"  

E-Print Network (OSTI)

We present detailed solutions to 81 of the 202 problems in J. Polchinski's two-volume textbook "String Theory".

Headrick, Matthew

2008-01-01T23:59:59.000Z

403

A solution manual for Polchinski's "String Theory"  

E-Print Network (OSTI)

We present detailed solutions to 81 of the 202 problems in J. Polchinski's two-volume textbook "String Theory".

Matthew Headrick

2008-12-23T23:59:59.000Z

404

Nuclear Dynamics with Effective Field Theories  

E-Print Network (OSTI)

These are the proceedings of the international workshop on "Nuclear Dynamics with Effective Field Theories" held at Ruhr-Universitaet Bochum, Germany from July 1 to 3, 2013. The workshop focused on effective field theories of low-energy QCD, chiral perturbation theory for nuclear forces as well as few- and many-body physics. Included are a short contribution per talk.

Evgeny Epelbaum; Hermann Krebs

2013-09-05T23:59:59.000Z

405

Nuclear Dynamics with Effective Field Theories  

E-Print Network (OSTI)

These are the proceedings of the international workshop on "Nuclear Dynamics with Effective Field Theories" held at Ruhr-Universitaet Bochum, Germany from July 1 to 3, 2013. The workshop focused on effective field theories of low-energy QCD, chiral perturbation theory for nuclear forces as well as few- and many-body physics. Included are a short contribution per talk.

Epelbaum, Evgeny

2013-01-01T23:59:59.000Z

406

Is There a Nonrecursive Decidable Equational Theory?  

Science Conference Proceedings (OSTI)

The Church-Turing Thesis (CTT) is often paraphrased as ``every computable function is computable by means of a Turing machine.'' The author has constructed a family of equational theories that are not Turing-decidable, that is, given one of the theories, ... Keywords: Church-Turing Thesis, Turing decidability, effective procedure, pseudorecursive theory, quotidian procedure

Benjamin Wells

2002-05-01T23:59:59.000Z

407

Towards Dark Energy from String-Theory  

E-Print Network (OSTI)

We discuss vacuum energy in string and M-theory with a focus on heterotic M-theory. In the latter theory a mechanism is described for maintaining zero vacuum energy after supersymmetry breaking. Higher-order corrections can be expected to give a sufficiently small amount of vacuum energy to possibly account for dark energy.

Axel Krause

2007-12-31T23:59:59.000Z

408

T-duality Invariant Approaches to String Theory  

E-Print Network (OSTI)

This thesis investigates the quantum properties of T-duality invariant formalisms of String Theory. We introduce and review duality invariant formalisms of String Theory including the Doubled Formalism. We calculate the background field equations for the Doubled Formalism of Abelian T-duality and show how they are consistent with those of a conventional String Theory description of a toroidal compactification. We generalise these considerations to the case of Poisson--Lie T-duality and show that the system of renormalisation group equations obtained from the duality invariant parent theory are equivalent to those of either of the T-dual pair of sigma-models. In duality invariant formalisms it is quite common to loose manifest Lorentz invariance at the level of the Lagrangian. The lack of manifest invariance means that at the quantum level one might anticipate Lorentz anomalies and we show that such anomalies cancel non-trivially. These represent important and non-trivial consistency checks of the duality invariant approach to String Theory.

Daniel C. Thompson

2010-12-20T23:59:59.000Z

409

Quantum theory and gravity from a space-time wave  

E-Print Network (OSTI)

The quantum properties and gravitational field of a particle system are derived from a quantum theory of space-time. A field with quantized space-time vibrations has the same properties and equations for a particle field in quantum theory. The statistical nature of quantum mechanics can be explained by assuming the amplitudes of space-time waves serve as additional variables of the theory. The difficulty of associating a physical meaning with the quantum wave due to the unobservable overall phase is resolved. Instead of attempting to derive the properties of space-time from a quantum theory, as is usually the case, the quantum properties of matter can be derived from a theory of space-time. The energy of a space-time wave must correspond to the rest mass of a real particle; the vibrations are thus quantized. It is also demonstrated that the geometrical structure derived from a quantized space-time vibration is equivalent to the gravitational field of a point mass in general relativity. The fundamental questions of why and how a point mass gives rise to its gravitational singularity and curved space-time geometry can thereby be explained.

Hou Yau

2007-06-01T23:59:59.000Z

410

Biochemical Control With Radiotherapy Improves Overall Survival in Intermediate and High-Risk Prostate Cancer Patients Who Have an Estimated 10-Year Overall Survival of >90%  

SciTech Connect

Purpose: To identify subgroups of patients with carcinoma of the prostate treated with radical radiotherapy that have improved overall survival when disease is biochemically controlled. Methods and Materials: A cohort of 1,060 prostate cancer patients treated with radical radiotherapy was divided into nine subgroups based on National Comprehensive Cancer Network risk category and estimated 10-year overall survival (eOS 10y) derived from the age adjusted Charlson Comorbidity Index. Patients with and without biochemical control were compared with respect to overall survival. Actuarial estimates of overall survival were calculated using the Kaplan-Meier method. Univariate and multivariate Cox proportional hazards models were used for analysis of overall survival. Results: Median follow-up was 125 months (range, 51-176 months). Only the subgroups with high or intermediate risk disease and an eOS 10y of >90% had a statistically significantly improved overall survival when prostate cancer was biochemically controlled. In all other groups, biochemical control made no significant difference to overall survival. In the subgroup with high-risk disease and eOS 10y >90%, actuarial overall survival was 86.3% (95% confidence interval [CI] 78.5%-94.1%) and 62.1% (95% CI 52.9%-71.3%) for patients with biochemical control and biochemical relapse respectively (p = 0.002). In the intermediate risk group with eOS >90%, actuarial overall survival was 95.3% (95% CI 89.0%-100%) and 79.8% (95% CI 68.0%-91.6%) for biochemically controlled and biochemically relapsed patients (p = 0.033). On multivariate analysis, National Comprehensive Cancer Network risk group (p = 0.005), biochemical control (p = 0.033) and eOS 10y (p < 0.001) were statistically significant. Conclusion: Biochemical control translates into improved overall survival in patients with high or intermediate risk disease and an estimated 10-year overall survival of >90%.

Herbert, Christopher, E-mail: cherbert@bccancer.bc.ca [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Centre, Vancouver, BC (Canada); Liu, Mitchell; Tyldesley, Scott; Morris, W. James [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Centre, Vancouver, BC (Canada); Joffres, Michel [Department of Health Sciences, Simon Fraser University, Surrey, BC (Canada); Khaira, Mandip; Kwan, Winkle [Department of Radiation Oncology, British Columbia Cancer Agency, Fraser Valley Centre, Surrey, BC (Canada); Moiseenko, Vitali [Department of Medical Physics, British Columbia Cancer Agency, Vancouver Centre, Vancouver, BC (Canada); Pickles, Thomas [Department of Radiation Oncology, British Columbia Cancer Agency, Vancouver Centre, Vancouver, BC (Canada)

2012-05-01T23:59:59.000Z

411

Matrix Product States for Lattice Field Theories  

E-Print Network (OSTI)

The term Tensor Network States (TNS) refers to a number of families of states that represent different ans\\"atze for the efficient description of the state of a quantum many-body system. Matrix Product States (MPS) are one particular case of TNS, and have become the most precise tool for the numerical study of one dimensional quantum many-body systems, as the basis of the Density Matrix Renormalization Group method. Lattice Gauge Theories (LGT), in their Hamiltonian version, offer a challenging scenario for these techniques. While the dimensions and sizes of the systems amenable to TNS studies are still far from those achievable by 4-dimensional LGT tools, Tensor Networks can be readily used for problems which more standard techniques, such as Markov chain Monte Carlo simulations, cannot easily tackle. Examples of such problems are the presence of a chemical potential or out-of-equilibrium dynamics. We have explored the performance of Matrix Product States in the case of the Schwinger model, as a widely used ...

Bauls, Mari Carmen; Cirac, J Ignacio; Jansen, Karl; Saito, Hana

2013-01-01T23:59:59.000Z

412

Thermodynamics, Hydrodynamics and Critical Phenomena in Strongly Coupled Gauge Theories.  

E-Print Network (OSTI)

??The gauge theory / string theory correspondence has led to great progress in the study of strongly-coupled gauge theories. In this work, we start with (more)

Pagnutti, Christopher

2011-01-01T23:59:59.000Z

413

Joint JQI/Condensed Matter Theory Center Wednesday, November 6, 2013  

E-Print Network (OSTI)

Joint JQI/Condensed Matter Theory Center Seminar Wednesday, November 6, 2013 11:00 am to 12:00 pm in several of the proposed dipolar systems. Joint work with: C. R. Laumann, S. Gopalakrishnan, M. Knap, M

Lathrop, Daniel P.

414

Molecular and Biochemical Characterization of Hydrocarbon Production in the Green Microalga Botryococcus braunii  

E-Print Network (OSTI)

Botryococcus braunii (Chlorophyta, Botryococcaceae) is a colony-forming green microalga that produces large amounts of liquid hydrocarbons, which can be converted into transportation fuels. While B. braunii has been well studied for the chemistry of the hydrocarbon production, very little is known about the molecular biology of B. braunii. As such, this study developed both apparatus and techniques to culture B. braunii for use in the genetic and biochemical characterization. During genetic studies, the genome size was determined of a representative strain of each of the three races of B. braunii, A, B, and L, that are distinguished based on the type of hydrocarbon each produces. Flow cytometry analysis indicates that the A race, Yamanaka strain, of B. braunii has a genome size of 166.0 +/- 0.4 Mb, which is similar to the B race, Berkeley strain, with a genome size of 166 +/- 2.2 Mb, while the L race, Songkla Nakarin strain, has a substantially larger genome size at 211.3 +/- 1.7 Mb. Phylogenetic analysis with the nuclear small subunit (18S) rRNA and actin genes were used to classify multiple strains of A, B, and L races. These analyses suggest that the evolutionary relationship between B. braunii races is correlated with the type of liquid hydrocarbon they produce. Biochemical studies of B. braunii primarily focused on the B race, because it uniquely produces large amounts of botryococcenes that can be used as a fuel for internal combustion engines. C30 botryococcene is metabolized by methylation to generate intermediates of C31, C32, C33, and C34. Raman spectroscopy was used to characterize the structure of botryococcenes. The spectral region from 1600?1700 cm^-1 showed v(C=C) stretching bands specific for botryococcenes. Distinct botryococcene Raman bands at 1640 and 1647 cm^-1 were assigned to the stretching of the C=C bond in the botryococcene branch and the exomethylene C=C bonds produced by the methylations, respectively. A Raman band at 1670 cm^-1 was assigned to the backbone C=C bond stretching. Finally, confocal Raman microspectroscopy was used to map the presence and location of methylated botryococcenes within a living colony of B. braunii cells.

Weiss, Taylor Leigh

2012-08-01T23:59:59.000Z

415

Highly-efficient noise-assisted energy transport in classical oscillator systems  

E-Print Network (OSTI)

Photosynthesis is a biological process that involves the highly-efficient transport of energy captured from the sun to a reaction center, where conversion into useful biochemical energy takes place. Even though one can always use a quantum perspective to describe any physical process, since everything follows the laws of Quantum Mechanics, is the use of quantum theory imperative to explain this high efficiency? Making use of the quantum-classical correspondence of electronic energy transfer recently introduced by Eisfeld and Briggs [Phys. Rev. E 85, 046118 (2012)], we show here that the highly-efficient noise-assisted energy transport described by Rebentrost et al. [New J. Phys. 11, 033003 (2009)], and Plenio and Huelga [New J. Phys. 10, 113019 (2008)], as the result of the interplay between the quantum coherent evolution of the photosynthetic system and noise introduced by its surrounding environment, it can be found as well in purely classical systems. The wider scope of applicability of the enhancement of energy transfer assisted by noise might open new ways for developing new technologies aimed at enhancing the efficiency of a myriad of energy transfer systems, from information channels in micro-electronic circuits to long-distance high-voltage electrical lines.

R. de J. Len-Montiel; Juan P. Torres

2013-01-08T23:59:59.000Z

416

Nuclear forces and chiral theories  

SciTech Connect

Recent successes in ab initio calculations of light nuclei (A=2-6) will be reviewed and correlated with the dynamical consequences of chiral symmetry. The tractability of nuclear physics evinced by these results is evidence for that symmetry. The relative importance of three-nucleon forces, four-nucleon forces, multi-pion exchanges, and relativistic corrections will be discussed in the context of effective field theories and dimensional power counting. Isospin violation in the nuclear force will also be discussed in this context.

Friar, J.L. [Los Alamos National Lab., NM (United States)]|[Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory

1995-09-01T23:59:59.000Z

417

Electromagnetic weak turbulence theory revisited  

SciTech Connect

The statistical mechanical reformulation of weak turbulence theory for unmagnetized plasmas including fully electromagnetic effects was carried out by Yoon [Phys. Plasmas 13, 022302 (2006)]. However, the wave kinetic equation for the transverse wave ignores the nonlinear three-wave interaction that involves two transverse waves and a Langmuir wave, the incoherent analogue of the so-called Raman scattering process, which may account for the third and higher-harmonic plasma emissions. The present paper extends the previous formalism by including such a term.

Yoon, P. H. [IPST, University of Maryland, College Park, Maryland 20742 (United States); Ziebell, L. F. [Instituto de Fisica, UFRGS, Porto Alegre, RS (Brazil); Gaelzer, R.; Pavan, J. [Instituto de Fisica e Matematica, UFPel, Pelotas, RS (Brazil)

2012-10-15T23:59:59.000Z

418

Foundation for system security  

Science Conference Proceedings (OSTI)

We provide a coherent framework for the design and analysis of secure systems. Our framework is inspired by Lawrence Lessig's modalities of control, by Niklas Luhmann's theory of trust, by existing models of information security, and by existing models ...

Clark Thomborson

2009-01-01T23:59:59.000Z

419

The General Theory of Relativity - A  

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

Einstein's special theory of relativity addressed the problem of the invariant speed of light in vacuum by showing the interrelationship of space and time. The general theory of relativity showed how the shape of spacetime could explain the mechanism of gravity. A B C D E F A. Special Theory, General Theory Albert Einstein's most noted accomplishment is his theory of relativity. This theory was developed in two major stages. The first stage is known as the special theory of relativity. Its essential idea is that neither space nor time are absolute things, but relative things that depend on one's frame of reference, while the combination of space and time is a single, nonrelative entity, which remains the same regardless of one's frame of reference.

420

Reflections on the Future of Concurrency Theory in General and Process Calculi in Particular  

Science Conference Proceedings (OSTI)

In this article we review the current state of concurrency theory with respect to its industrial impact. This review is both retrospective and prospective, and naturally encompasses process calculi, which are a major vector for spreading concurrency ... Keywords: Concurrency theory, concurrent system, critical system, formal method, formal specification, model-driven architecture, model-driven engineering, modeling, modelling, process algebra, process calculus, specification, validation, verification

Hubert Garavel

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Hamiltonian surface shaping with information theory and exergy#47;entropy control for collective plume tracing  

Science Conference Proceedings (OSTI)

The goal of this paper is to design and analyse distributed decentralised control laws for a team of robots performing collective plume tracing based on Hamiltonian surface shaping, information theory, and exergy/entropy control. The process ... Keywords: Fisher information, Hamiltonian systems, collective plume tracing, collective systems, decentralised control, distributed control, entropy control, exergy control, information theory, kinetic control, robot collaboration, robot control, robot kinematics, robots, surface shaping

Rush D. Robinett, III; David G. Wilson

2010-01-01T23:59:59.000Z

422

On the algebraic K-theory of Spec Z^N.  

E-Print Network (OSTI)

In his thesis, N. Durov develops a theory of algebraic geometry in which schemes are locally determined by commutative algebraic monads. In this setting, one is able to construct the Arakelov geometric compactification of the spectrum of the ring of integers in a purely algebraic fashion. This object arises as the limit of a certain projective system of generalized schemes. We study the constituents of this projective system, and compute their algebraic K-theory.

Stella Anevski.

423

Multilevel splitting for reachability analysis of stochastic hybrid systems  

Science Conference Proceedings (OSTI)

Biochemical research is increasingly using formal modeling, simulation, and analysis methods to improve the understanding of complex systems. Probabilistic analysis techniques such as Monte Carlo methods can be used to determine reachability or safety ... Keywords: Monte Carlo, stochastic hybrid systems, variance reduction

Derek Riley; Xenofon Koutsoukos; Kasandra Riley

2010-07-01T23:59:59.000Z

424

Monolithic piezoelectric sensor (MPS) for sensing chemical, biochemical and physical measurands  

DOE Patents (OSTI)

A piezoelectric sensor and assembly for measuring chemical, biochemical and physical measurands is disclosed. The piezoelectric sensor comprises a piezoelectric material, preferably a crystal, a common metal layer attached to the top surface of the piezoelectric crystal, and a pair of independent resonators placed in close proximity on the piezoelectric crystal such that an efficacious portion of acoustic energy couples between the resonators. The first independent resonator serves as an input port through which an input signal is converted into mechanical energy within the sensor and the second independent resonator serves an output port through which a filtered replica of the input signal is detected as an electrical signal. Both a time delay and an attenuation at a given frequency between the input signal and the filtered replica may be measured as a sensor output. The sensor may be integrated into an assembly with a series feedback oscillator and a radio frequency amplifier to process the desired sensor output. In the preferred embodiment of the invention, a selective film is disposed upon the grounded metal layer of the sensor and the resonators are encapsulated to isolate them from the measuring environment. In an alternative embodiment of the invention, more than two resonators are used in order to increase the resolution of the sensor.

Andle, Jeffrey C. (Bangor, ME); Lec, Ryszard M. (Orono, ME)

2000-01-01T23:59:59.000Z

425

Modified biochemical methane potential (BMP) assays to assess biodegradation potential of landfilled refuse  

DOE Green Energy (OSTI)

Modified Biochemical Methane Potential (BMP) assays were used to assess biogas production potential of solid landfill samples. In landfill samples with visible soil content, moisture addition alone was generally as effective at stimulating biogas production as the addition of a comprehensive nutrient media. In a variety of samples from humid and semiarid landfills, addition of an aqueous nutrient media was the most effective stimulant for biogas production; however, moisture addition was almost as effective for most samples, suggesting that water addition would be the most cost-effective field approach. Onset of methanogenesis was slower in fresh refuse samples (even when inoculated with anaerobic digester sludge) than in landfill samples, indicating that the soil into which materials are landfilled is a major source of microorganisms. High volatile solids loading in fresh refuse and landfill assays retarded methanogenesis. A comparison of anaerobic and aerobic sample handling techniques showed no significant differences with regard to onset of methanogenesis and total gas production. The technique shows initial promise with regard to replication and reproducibility of results and could be a meaningful addition to landfill site evaluations where commercial gas recovery is anticipated. The BMP technique could also be adapted to assess anaerobic biodegradability of other solid waste materials for conventional anaerobic digestion applications. 9 refs., 6 figs., 2 tabs.

Bogner, J.E.; Rose, C.; Piorkowski, R.

1989-01-01T23:59:59.000Z

426

Vortex operators in gauge field theories  

SciTech Connect

Several related aspects of the 't Hooft vortex operator are studied. The current picture of the vacuum of quantum chromodynamics, the idea of dual field theories, and the idea of the vortex operator are reviewed first. The Abelian vortex operator written in terms of elementary fields and the calculation of its Green's functions are considered. A two-dimensional solvable model of a Dirac string is presented. The expression of the Green's functions more neatly in terms of Wu and Yang's geometrical idea of sections is addressed. The renormalization of the Green's functions of two kinds of Abelian looplike operators, the Wilson loop and the vortex operator, is studied; for both operators only an overall multiplicative renormalization is needed. In the case of the vortex this involves a surprising cancellation. Next, the dependence of the Green's functions of the Wilson and 't Hooft operators on the nature of the vacuum is discussed. The cluster properties of the Green's functions are emphasized. It is seen that the vortex operator in a massive Abelian theory always has surface-like clustering. The form of Green's functions in terms of Feynman graphs is the same in Higgs and symmetric phases; the difference appears in the sum over all tadpole trees. Finally, systems having fields in the fundamental representation are considered. When these fields enter only weakly into the dynamics, a vortex-like operator is anticipated. Any such operator can no longer be local looplike, but must have commutators at long range. A U(1) lattice gauge theory with two matter fields, one singly charged (fundamental) and one doubly charged (adjoint), is examined. When the fundamental field is weakly coupled, the expected phase transitions are found. When it is strongly coupled, the operator still appears to be a good order parameter, a discontinuous change in its behavior leads to a new phase transition. 18 figures.

Polchinski, J.

1980-07-01T23:59:59.000Z

427

Architecting the System of Systems Enterprise: Enabling Constructs and Methods from the Field of Engineering Systems  

E-Print Network (OSTI)

Engineering systems is a field of scholarship focused on developing fundamental theories and methods to address the challenges of large-scale complex systems in context of their socio-technical environments. The authors ...

Rhodes, Donna H.

428

Singular perturbations and time-scale methods in control theory: Survey 1976-1983  

Science Conference Proceedings (OSTI)

Recent progress in the use of singular perturbation and two-time-scale methods of modeling and design for control systems is reviewed. Over 350 references are organized into major problem areas. Representative issues and results are discussed with a ... Keywords: Singular perturbations, decomposition, estimation, large-scale systems, nonlinear control systems, regulator theory, robustness, stability

V. R. Saksena; J. O'Reilly; P. V. Kokotovic

1984-05-01T23:59:59.000Z

429

Information Security Analysis Using Game Theory and Simulation  

SciTech Connect

Information security analysis can be performed using game theory implemented in dynamic simulations of Agent Based Models (ABMs). Such simulations can be verified with the results from game theory analysis and further used to explore larger scale, real world scenarios involving multiple attackers, defenders, and information assets. Our approach addresses imperfect information and scalability that allows us to also address previous limitations of current stochastic game models. Such models only consider perfect information assuming that the defender is always able to detect attacks; assuming that the state transition probabilities are fixed before the game assuming that the players actions are always synchronous; and that most models are not scalable with the size and complexity of systems under consideration. Our use of ABMs yields results of selected experiments that demonstrate our proposed approach and provides a quantitative measure for realistic information systems and their related security scenarios.

Schlicher, Bob G [ORNL; Abercrombie, Robert K [ORNL

2012-01-01T23:59:59.000Z

430

Calculation of exchange energies using algebraic perturbation theory  

Science Conference Proceedings (OSTI)

An algebraic perturbation theory is presented for efficient calculations of localized states and hence of exchange energies, which are the differences between low-lying states of the valence electron of a molecule, formed by the collision of an ion Y{sup +} with an atom X. For the case of a homonuclear molecule these are the gerade and ungerade states and the exchange energy is an exponentially decreasing function of the internuclear distance. For such homonuclear systems the theory is used in conjunction with the Herring-Holstein technique to give accurate exchange energies for a range of intermolecular separations R. Since the perturbation parameter is essentially 1/R, this method is suitable for large R. In particular, exchange energies are calculated for X{sub 2}{sup +} systems, where X is H, Li, Na, K, Rb, or Cs.

Burrows, B. L. [Mathematics Section Faculty of Computing, Engineering and Technology Staffordshire University, Beaconside, Stafford ST18 0DG (United Kingdom); Dalgarno, A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States); Cohen, M. [Department of Physical Chemistry, Hebrew University of Jerusalem, Jerusalem IL-91904 (Israel)

2010-04-15T23:59:59.000Z

431

Formation of Hydrogen Cottrell Atmosphere in Palladium: Theory ...  

Science Conference Proceedings (OSTI)

Symposium, Hydrogen Storage in Materials: Theory and Experiment. Presentation Title, Formation of Hydrogen Cottrell Atmosphere in Palladium: Theory and...

432

Thermodynamics in Modified Gravity Theories  

E-Print Network (OSTI)

We demonstrate that there does exist an equilibrium description of thermodynamics on the apparent horizon in the expanding cosmological background for a wide class of modified gravity theories with the Lagrangian density $f(R, \\phi, X)$, where $R$ is the Ricci scalar and $X$ is the kinetic energy of a scalar field $\\phi$. This comes from a suitable definition of an energy momentum tensor of the "dark" component obeying the local energy conservation law in the Jordan frame. It is shown that the equilibrium description in terms of the horizon entropy $S$ is convenient because it takes into account the contribution of the horizon entropy $\\hat{S}$ in non-equilibrium thermodynamics as well as an entropy production term.

Kazuharu Bamba; Chao-Qiang Geng; Shinji Tsujikawa

2011-01-19T23:59:59.000Z

433

The R-matrix theory  

E-Print Network (OSTI)

The different facets of the $R$-matrix method are presented pedagogically in a general framework. Two variants have been developed over the years: $(i)$ The "calculable" $R$-matrix method is a calculational tool to derive scattering properties from the Schr\\"odinger equation in a large variety of physical problems. It was developed rather independently in atomic and nuclear physics with too little mutual influence. $(ii)$ The "phenomenological" $R$-matrix method is a technique to parametrize various types of cross sections. It was mainly (or uniquely) used in nuclear physics. Both directions are explained by starting from the simple problem of scattering by a potential. They are illustrated by simple examples in nuclear and atomic physics. In addition to elastic scattering, the $R$-matrix formalism is applied to transfer and radiative-capture reactions. We also present more recent and more ambitious applications of the theory in nuclear physics.

P. Descouvemont; D. Baye

2010-01-05T23:59:59.000Z

434

NREL: Energy Sciences - Solid-State Theory  

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

Solid-State Theory Solid-State Theory Image showing a roughly spherical red shape that looks like an apple that is floating within a yellow hemispherical shell. The shell is floating over a square below that shows an orange ring pattern bordered by yellow, then light blue, then darker blue. Square of the wave function (red) of a hole state in a spherical CdSe colloidal quantum dot (shape in yellow). The main research activities of the Solid-State Theory team within NREL's Theoretical Materials Science Group include the following: Theory of photovoltaic semiconductors Statistical and electronic theory of metal and semiconductor alloys Semiconductor nanostructures Inverse design of materials Computational methods in first-principles theories. This team provides the main theoretical thrust in the Center for Inverse

435

Ensemble methods in computational protein and ligand design : applications to the Fc[gamma] immunoglobulin, HIV-1 protease, and ketol-acid reductoisomerase systems  

E-Print Network (OSTI)

This thesis explores the use of ensemble, free energy models in the study and design of molecular, biochemical systems. We use physics based computational models to analyze the molecular basis of binding affinity in the ...

Silver, Nathaniel White

2012-01-01T23:59:59.000Z

436

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters  

DOE Green Energy (OSTI)

This paper describes the modeling work by Makai Ocean Engineering, Inc. to simulate the biochemical effects of of the nutrient-enhanced seawater plumes that are discharged by one or several 100 megawatt OTEC plants. The modeling is needed to properly design OTEC plants that can operate sustainably with acceptably low biological impact. In order to quantify the effect of discharge configuration and phytoplankton response, Makai Ocean Engineering implemented a biological and physical model for the waters surrounding O`ahu, Hawai`i, using the EPA-approved Environmental Fluid Dynamics Code (EFDC). Each EFDC grid cell was approximately 1 square kilometer by 20 meters deep, and used a time step of three hours. The biological model was set up to simulate the biochemical response for three classes of organisms: Picoplankton (< 2 um) such as prochlorococccus, nanoplankton (2-20 um), and microplankton (> 20 um) e.g., diatoms. The dynamic biological phytoplankton model was calibrated using chemical and biological data collected for the Hawaii Ocean Time Series (HOTS) project. Peer review of the biological modeling was performed. The physical oceanography model uses boundary conditions from a surrounding Hawai'i Regional Ocean Model, (ROM) operated by the University of Hawai`i and the National Atmospheric and Oceanic Administration. The ROM provided tides, basin scale circulation, mesoscale variability, and atmospheric forcing into the edges of the EFDC computational domain. This model is the most accurate and sophisticated Hawai'ian Regional Ocean Model presently available, assimilating real-time oceanographic observations, as well as model calibration based upon temperature, current and salinity data collected during 2010 near the simulated OTEC site. The ROM program manager peer-reviewed Makai's implementation of the ROM output into our EFDC model. The supporting oceanographic data was collected for a Naval Facilities Engineering Command / Makai project. Results: The model was run for a 100 MW OTEC Plant consisting of four separate ducts, discharging a total combined flow rate of 420 m3/s of warm water and 320 m3/s of cold water in a mixed discharge at 70 meters deep. Each duct was assumed to have a discharge port diameter of 10.5m producing a downward discharge velocity of about 2.18 m/s. The natural system, as measured in the HOTS program, has an average concentration of 10-15 mgC/m3. To calibrate the biological model, we first ran the model with no OTEC plant and varied biological parameters until the simulated data was a good match to the HOTS observations. This modeling showed that phytoplankton concentration were patchy and highly dynamic. The patchiness was a good match with the data variability observed within the HOTS data sets. We then ran the model with simulated OTEC intake and discharge flows and associated nutrients. Directly under the OTEC plant, the near-field plume has an average terminal depth of 172 meters, with a volumetric dilution of 13:1. The average terminal plume temperature was 19.8oC. Nitrate concentrations are 1 to 2 umol/kg above ambient. The advecting plume then further dilutes to less than 1 umol/kg above ambient within a few kilometers downstream, while remaining at depth. Because this terminal near-field plume is well below the 1% light limited depths (~120m), no immediate biological utilization of the nutrients occurs. As the nitrate is advected and dispersed downstream, a fraction of the deep ocean nutrients (< 0.5 umol/kg perturbation) mix upward where they are utilized by the ambient phytoplankton population. This occurs approximately twenty-five kilometers downstream from the plant at 110 - 70 meters depth. For pico-phytoplankton, modeling results indicate that this nutrient perturbation causes a phytoplankton perturbation of approximately 1 mgC/m3 (~10% of average ambient concentrations) that covers an area 10x5 km in size at the 70 to 90m depth. Thus, the perturbations are well within the natural variability of the system, generally corresponding to a 10 to 15% increase above the a

PAT GRANDELLI, P.E.; GREG ROCHELEAU; JOHN HAMRICK, Ph.D.; MATT CHURCH, Ph.D.; BRIAN POWELL, Ph.D.

2012-09-29T23:59:59.000Z

437

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters  

Science Conference Proceedings (OSTI)

This paper describes the modeling work by Makai Ocean Engineering, Inc. to simulate the biochemical effects of of the nutrient-enhanced seawater plumes that are discharged by one or several 100 megawatt OTEC plants. The modeling is needed to properly design OTEC plants that can operate sustainably with acceptably low biological impact. In order to quantify the effect of discharge configuration and phytoplankton response, Makai Ocean Engineering implemented a biological and physical model for the waters surrounding O`ahu, Hawai`i, using the EPA-approved Environmental Fluid Dynamics Code (EFDC). Each EFDC grid cell was approximately 1 square kilometer by 20 meters deep, and used a time step of three hours. The biological model was set up to simulate the biochemical response for three classes of organisms: Picoplankton ( 20 um) e.g., diatoms. The dynamic biological phytoplankton model was calibrated using chemical and biological data collected for the Hawaii Ocean Time Series (HOTS) project. Peer review of the biological modeling was performed. The physical oceanography model uses boundary conditions from a surrounding Hawai'i Regional Ocean Model, (ROM) operated by the University of Hawai`i and the National Atmospheric and Oceanic Administration. The ROM provided tides, basin scale circulation, mesoscale variability, and atmospheric forcing into the edges of the EFDC computational domain. This model is the most accurate and sophisticated Hawai'ian Regional Ocean Model presently available, assimilating real-time oceanographic observations, as well as model calibration based upon temperature, current and salinity data collected during 2010 near the simulated OTEC site. The ROM program manager peer-reviewed Makai's implementation of the ROM output into our EFDC model. The supporting oceanographic data was collected for a Naval Facilities Engineering Command / Makai project. Results: The model was run for a 100 MW OTEC Plant consisting of four separate ducts, discharging a total combined flow rate of 420 m3/s of warm water and 320 m3/s of cold water in a mixed discharge at 70 meters deep. Each duct was assumed to have a discharge port diameter of 10.5m producing a downward discharge velocity of about 2.18 m/s. The natural system, as measured in the HOTS program, has an average concentration of 10-15 mgC/m3. To calibrate the biological model, we first ran the model with no OTEC plant and varied biological parameters until the simulated data was a good match to the HOTS observations. This modeling showed that phytoplankton concentration were patchy and highly dynamic. The patchiness was a good match with the data variability observed within the HOTS data sets. We then ran the model with simulated OTEC intake and discharge flows and associated nutrients. Directly under the OTEC plant, the near-field plume has an average terminal depth of 172 meters, with a volumetric dilution of 13:1. The average terminal plume temperature was 19.8oC. Nitrate concentrations are 1 to 2 umol/kg above ambient. The advecting plume then further dilutes to less than 1 umol/kg above ambient within a few kilometers downstream, while remaining at depth. Because this terminal near-field plume is well below the 1% light limited depths (~120m), no immediate biological utilization of the nutrients occurs. As the nitrate is advected and dispersed downstream, a fraction of the deep ocean nutrients (< 0.5 umol/kg perturbation) mix upward where they are utilized by the ambient phytoplankton population. This occurs approximately twenty-five kilometers downstream from the plant at 110 - 70 meters depth. For pico-phytoplankton, modeling results indicate that this nutrient perturbation causes a phytoplankton perturbation of approximately 1 mgC/m3 (~10% of average ambient concentrations) that covers an area 10x5 km in size at the 70 to 90m depth. Thus, the perturbations are well within the natural variability of the system, generally corresponding to a 10 to 15% increase above the a

PAT GRANDELLI, P.E.; GREG ROCHELEAU; JOHN HAMRICK, Ph.D.; MATT CHURCH, Ph.D.; BRIAN POWELL, Ph.D.

2012-09-29T23:59:59.000Z

438

Supersymmetric K field theories and defect structures  

E-Print Network (OSTI)

We construct supersymmetric K field theories (i.e., theories with a non-standard kinetic term) in 1+1 and 2+1 dimensions such that the bosonic sector just consists of a nonstandard kinetic term plus a potential. Further, we study the possibility of topological defect formation in these supersymmetric models. Finally, we consider more general supersymmetric K field theories where, again, topological defects exist in some cases.

Adam, C; Sanchez-Guillen, J; Wereszczynski, A

2011-01-01T23:59:59.000Z

439

Infrared Issues in Graviton Higgs Theory  

E-Print Network (OSTI)

We investigate the one-loop infrared behaviour of the effective potential in minimally coupled graviton Higgs theory in Minkowski background. The gravitational analogue of one loop Coleman Weinberg effective potential turns out to be complex, the imaginary part indicating an infrared instability. This instability is traced to a tachyonic pole in the graviton propagator for constant Higgs fields. Physical implications of this behaviour are studied. We also discuss physical differences between gauge theories coupled to Higgs fields and graviton Higgs theory.

Srijit Bhattacharjee; Parthasarathi Majumdar

2013-01-30T23:59:59.000Z

440

Materials Informatics: Theory and Application  

Science Conference Proceedings (OSTI)

Oct 15, 2006 ... Eugene C Butcher, Ellen L Berg & Eric J Kunkel. Systems biology in drug discovery. Nature Biotechnology vol 22, 1253-1259 (2004).

Note: This page contains sample records for the topic "biochemical systems theory" 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

COATINGS FOR PROTECTION OF EQUIPMENT FOR BIOCHEMICAL PROCESSING OF GEOTHERMAL RESIDUES: PROGRESS REPORT FY 97  

DOE Green Energy (OSTI)

Thermal sprayed ethylene methacrylic acid (EMAA) and ethylene tetrafluoroethylene (ETFE), spray-and-bake ETFE and polyvinylidene fluoride (PVDF) and brushable ceramic-epoxy coatings were evaluated for corrosion protection in a biochemical process to treat geothermal residues. The findings are also relevant to other moderate temperature brine environments where corrosion is a problem. Coupon, Atlas cell, peel strength, cathodic disbondment and abrasion tests were performed in aggressive environments including geothermal sludge, hypersaline brine and sulfur-oxidizing bacteria (Thiobadus ferrooxidans) to determine suitability for protecting storage tanks and reaction vessels. It was found that all of the coatings were resistant to chemical attack and biodegradation at the test temperature of 55 C. The EMAA coatings protected 316L stainless steel from corrosion in coupon tests. However, corrosion of mild steel substrates thermal sprayed with EMAA and ETFE occurred in Atlas cell tests that simulated a lined reactor operating environment and this resulted in decreased adhesive strength. Peel tests to measure residual adhesion revealed that failure mode was dependent on exposure conditions. Long-term tests on the durability of ceramic-epoxy coatings in brine and bacteria are ongoing. Initial indications are that this coating has suitable characteristics. Abrasion tests showed that the ceramic-epoxy had good resistance to the abrasive effects of sludge. Thermal sprayed EMAA coatings also displayed abrasion resistance. Cathodic disbondment tests in brine at room temperature indicated that EMAA coatings are resistant to disbondment at applied potentials of {minus}780 to {minus}1,070 mV SCE for the test conditions and duration. Slight disbondment of one specimen occurred at a potential of {minus}1,500 mV SCE. The EMAA may be suited to use in conjunction with cathodic protection although further long-term, higher temperature testing would be needed.

ALLAN,M.L.

1997-11-01T23:59:59.000Z

442

Coatings for protection of equipment for biochemical processing of geothermal residues: Progress report FY`97  

DOE Green Energy (OSTI)

Thermal sprayed ethylene methacrylic acid (EMAA) and ethylene tetrafluoroethylene (ETFE), spray-and-bake ETFE and polyvinylidene fluoride (PVDF) and brushable ceramic-epoxy coatings were evaluated for corrosion protection in a biochemical process to treat geothermal residues. Coupon, Atlas cell, peel strength, cathodic disbondment and abrasion tests were performed in aggressive environments including geothermal sludge, hypersaline brine and sulfur-oxidizing bacteria (Thiobacillus ferrooxidans) to determine suitability for protecting storage tanks and reaction vessels. It was found that all of the coatings were resistant to chemical attack and biodegradation at the test temperature of 55 C. The EMAA coatings protected 316L stainless steel from corrosion in coupon tests. However, corrosion of mild steel substrates thermal sprayed with EMAA and ETFE occurred in Atlas cell tests that simulated a lined reactor operating environment and this resulted in decreased adhesive strength. Peel tests to measure residual adhesion revealed that failure mode was dependent on exposure conditions. Abrasion tests showed that the ceramic-epoxy had good resistance to the abrasive effects of sludge. Thermal sprayed EMAA coatings also displayed abrasion resistance. Cathodic disbondment tests in brine at room temperature indicated that EMAA coatings are resistant to disbondment at applied potentials of {minus}780 to {minus}1,070 mV SCE for the test conditions and duration. Slight disbondment of one specimen occurred at a potential of {minus}1,500 mV SCE. The EMAA may be suited to use in conjunction with cathodic protection although further long-term, higher temperature testing would be needed.

Allan, M.L.

1997-11-01T23:59:59.000Z

443

Fusion systems and biset functors via ghost algebras  

E-Print Network (OSTI)

2.2 Fusion Preserving1 Background 1.1 Fusion System Basics . . . . . . 1.2A. Craven. The theory of fusion systems. Vol. 131. Cambridge

O'Hare, Shawn Michael

2013-01-01T23:59:59.000Z

444

NIST: Theory and theoretical input data  

Science Conference Proceedings (OSTI)

... electrodynamic (QED) effects such as self energy and vacuum polarization, and nuclear size and motion effects. The theory and theoretical data ...

445

BPS solitons in Lifshitz field theories  

E-Print Network (OSTI)

Lorentz-invariant scalar field theories in d+1 dimensions with second-order derivative terms are unable to support static soliton solutions that are both finite in energy and stable for d>2, a result known as Derrick's theorem. Lifshitz theories, which introduce higher-order spatial derivatives, need not obey Derrick's theorem. We construct stable, finite-energy, static soliton solutions in Lifshitz scalar field theories in 3+1 dimensions with dynamical critical exponent z=2. We exhibit three generic types: non-topological point defects, topological point defects, and topological strings. We focus mainly on Lifshitz theories that are defined through a superpotential and admit BPS solutions. These kinds of theories are the bosonic sectors of supersymmetric theories derived from the stochastic dynamics of a scalar field theory in one higher dimension. If nature obeys a Lifshitz field theory in the ultraviolet, then the novel topological defects discussed here may exist as relics from the early universe. Their discovery would prove that standard field theory breaks down at short distance scales.

Archil Kobakhidze; Jayne E. Thompson; Raymond R. Volkas

2010-10-06T23:59:59.000Z

446

Axisymmetric theory and the interactive, asymmetric monsoon.  

E-Print Network (OSTI)

??The applicability of axisymmetric theory of angular momentum conserving circulations to the large-scale steady monsoon is studied in a general circulation model with idealized representations (more)

Priv, Nikki C., 1977-

2005-01-01T23:59:59.000Z

447

Ambiguous Rights: Gender Politics and Theory  

E-Print Network (OSTI)

csw update: special issue on Thinking Gender 2011! contents21st Ambiguous Right s Gender, Politics, and Theory Criticalhe panel, Ambiguous Rights: Gender, panel review by Jillian

Beck, Jillian

2011-01-01T23:59:59.000Z

448

Gravity as BF theory plus potential  

E-Print Network (OSTI)

Spin foam models of quantum gravity are based on Plebanski's formulation of general relativity as a constrained BF theory. We give an alternative formulation of gravity as BF theory plus a certain potential term for the B-field. When the potential is taken to be infinitely steep one recovers general relativity. For a generic potential the theory still describes gravity in that it propagates just two graviton polarizations. The arising class of theories is of the type amenable to spin foam quantization methods, and, we argue, may allow one to come to terms with renormalization in the spin foam context.

Kirill Krasnov

2009-07-23T23:59:59.000Z

449

RHIC | String Theory Predicts an Experimental Result  

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

Note: This is a February 2009 article written by Glennda Chui that originally appeared in the online publication symmetry breaking. A first: String theory predicts an experimental...

450

Water Theory is Watertight | Advanced Photon Source  

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

| 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Water Theory is Watertight JANUARY 22, 2007 Bookmark and Share Steve Granick, professor of...

451

Interdisciplinary plasma theory workshop | Princeton Plasma Physics...  

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

Interdisciplinary plasma theory workshop April 15, 2013 Tweet Widget Facebook Like Google Plus One (Photo by Elle Starkman PPPL Office of Communications) PPPL postdoctoral fellow...

452

Gauge transformations in lattice chiral theories  

E-Print Network (OSTI)

We show that gauge-transformation properties of correlation functions in chiral gauge theories on the finite lattice are determined in a general way.

Werner Kerler

2004-12-21T23:59:59.000Z

453

Optimization Online - Nonsmooth Optimization for Production Theory  

E-Print Network (OSTI)

Dec 27, 2007 ... Abstract: Production theory needs generalizations so that it can incorporate broader class of production functions. A generalized Hotelling's...

454

Discrete generalized multigroup theory and applications  

E-Print Network (OSTI)

This study develops a fundamentally new discrete generalized multigroup energy expansion theory for the linear Boltzmann transport equation. Discrete orthogonal polynomials are used, in conjunction with the traditional ...

Zhu, Lei, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

455

An Introduction to the Heavy Quark Effective Theory  

E-Print Network (OSTI)

These lecture notes begin with a brief survey of the physics of heavy quark systems. This discusion motivates the introduction of the Heavy Quark Effective theory (HQET) which captures a great deal of the intuition developed. A derivation of the HQET from QCD is presented as well as an analysis of its special properties. The effective theory can be seen to amount to a one-dimensional field theory in the quark sector. The heavy quark flavour- and spin- symmetry of the effective lagrangian is an offspring of this. Other topics covered include the question of covariance of the theory, the construction of interpolating fields for the heavy hadron states, the application of LSZ reduction theorems to determine the (reduced) number of form factors in flavour changing transitions, a complete verification of Luke's theorem, plus the matching conditions between QCD and the HQET beyond tree level. These are an expanded version of lectures presented during the Trieste 1994 Summer school on High Energy physics.

F. Hussain; G. Thompson

1995-02-07T23:59:59.000Z

456

Local molecular field theory for the treatment of electrostatics  

E-Print Network (OSTI)

We examine in detail the theoretical underpinnings of previous successful applications of local molecular field (LMF) theory to charged systems. LMF theory generally accounts for the averaged effects of long-ranged components of the intermolecular interactions by using an effective or restructured external field. The derivation starts from the exact Yvon-Born-Green hierarchy and shows that the approximation can be very accurate when the interactions averaged over are slowly varying at characteristic nearest-neighbor distances. Application of LMF theory to Coulomb interactions alone allows for great simplifications of the governing equations. LMF theory then reduces to a single equation for a restructured electrostatic potential that satisfies Poisson's equation defined with a smoothed charge density. Because of this charge smoothing by a Gaussian of width sigma, this equation may be solved more simply than the detailed simulation geometry might suggest. Proper choice of the smoothing length sigma plays a major role in ensuring the accuracy of this approximation. We examine the results of a basic confinement of water between corrugated wall and justify the simple LMF equation used in a previous publication. We further generalize these results to confinements that include fixed charges in order to demonstrate the broader impact of charge smoothing by sigma. The slowly-varying part of the restructured electrostatic potential will be more symmetric than the local details of confinements.

Jocelyn M. Rodgers; John D. Weeks

2008-09-17T23:59:59.000Z

457

DOE Science Showcase - Fission Theory | OSTI, US Dept of Energy, Office of  

Office of Scientific and Technical Information (OSTI)

Fission Theory Fission Theory A predictive theory of nuclear fission has eluded physicists since 1939. Because understanding the fission process is crucial for many areas of scientific research, including particle systems, the development of carbon-free energy and to national security, much work continues at the Department of Energy (DOE) to understand fission's inherent complexity. Today, scientists are performing new experiments and using both microscopic and macroscopic-microscopic models of fission to help them in this quest. Read more about remarkable advances in the Department's fission theory research In the OSTI Collections: Fission Theory by Dr. William Watson, Physicist, OSTI staff. Image Credit: Los Alamos National Laboratory Additional Links of Interest Office of Nuclear Energy, DOE

458

Theory and Applications of Biotelemetry  

Science Conference Proceedings (OSTI)

In this study, biotelemetry and its evolution is explained in detail. Bioelectric and physiological variables could be measured by biotelemetry systems. The development of a biotelemetry system and its principal operation are presented. The components ... Keywords: biotelemetry, data gathering, implantable device, modulation, remote monitoring, single channel and multichannel biotelemetry, telemetry types

Nihal Fatma Gler; Elif Derya beyli

2002-04-01T23:59:59.000Z

459

Tail terms in gravitational radiation reaction via effective field theory  

E-Print Network (OSTI)

Gravitational radiation reaction affects the dynamics of gravitationally bound binary systems. Here we focus on the leading "tail" term which modifies binary dynamics at fourth post-Newtonian order, as first computed by Blanchet and Damour. We re-produce this result using effective field theory techniques in the framework of the Lagrangian formalism suitably extended to include dissipation effects. We recover the known logarithmic tail term, consistently with the recent interpretation of the logarithmic tail term in the mass parameter as a renormalization group effect of the Bondi mass of the system.

S. Foffa; R. Sturani

2011-11-23T23:59:59.000Z

460

Density Functional Theory Approach to Nuclear Fission  

E-Print Network (OSTI)

The Skyrme nuclear energy density functional theory (DFT) is used to model neutron-induced fission in actinides. This paper focuses on the numerical implementation of the theory. In particular, it reports recent advances in DFT code development on leadership class computers, and presents a detailed analysis of the numerical accuracy of DFT solvers for near-scission calculations.

N. Schunck

2012-12-13T23:59:59.000Z

Note: This page contains sample records for the topic "biochemical systems theory" 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

Theory of cooling neutron stars versus observations  

E-Print Network (OSTI)

We review current state of neutron star cooling theory and discuss the prospects to constrain the equation of state, neutrino emission and superfluid properties of neutron star cores by comparing the cooling theory with observations of thermal radiation from isolated neutron stars.

Yakovlev, D G; Kaminker, A D; Potekhin, A Yu

2007-01-01T23:59:59.000Z

462

Meta-theory la carte  

Science Conference Proceedings (OSTI)

Formalizing meta-theory, or proofs about programming languages, in a proof assistant has many well-known benefits. Unfortunately, the considerable effort involved in mechanizing proofs has prevented it from becoming standard practice. This cost can be ... Keywords: coq, extensible church encodings, modular mechanized meta-theory

Benjamin Delaware; Bruno C. d. S. Oliveira; Tom Schrijvers

2013-01-01T23:59:59.000Z

463

The Feynman $i \\epsilon$ in String Theory  

E-Print Network (OSTI)

The Feynman $i\\varepsilon$ is an important ingredient in defining perturbative scattering amplitudes in field theory. Here we describe its analog in string theory. Roughly one takes the string worldsheet to have Lorentz signature when a string is going on-shell although it has Euclidean signature generically.

Witten, Edward

2013-01-01T23:59:59.000Z

464

Numerical Object Oriented Quantum Field Theory Calculations  

E-Print Network (OSTI)

The qft++ package is a library of C++ classes that facilitate numerical (not algebraic) quantum field theory calculations. Mathematical objects such as matrices, tensors, Dirac spinors, polarization and orbital angular momentum tensors, etc. are represented as C++ objects in qft++. The package permits construction of code which closely resembles quantum field theory expressions, allowing for quick and reliable calculations.

M. Williams

2008-05-19T23:59:59.000Z

465

BSM Theories Face Higgs Coupling data  

E-Print Network (OSTI)

We discuss how much Higgs couplings (including the Higgs self coupling) can deviate from their Standard Model values, in different Beyond Standard Model (BSM) theories, if no other BSM states are accessible at the LHC. Then, we focus on supersymmetric theories and show that there is a connection between the mechanism to raise the Higgs mass and the pattern of Higgs coupling deviations.

Rick S. Gupta

2013-11-13T23:59:59.000Z

466

Analytic theory of ICRF minority heating  

SciTech Connect

We present a one-dimensional analytic theory of the ICRF gyroresonant absorption and mode-conversion, for the problem of minority fundamental resonance. Using the wave phase-space method, and the theory of linear mode conversion therein, we obtain explicit expressions for the coefficients of transmission (T), reflection (R), conversion (C), absorption (A). 7 refs., 2 figs.

Ye, H.; Kaufman, A.N.

1989-04-01T23:59:59.000Z

467

Decision Theory, Intelligent Planning and Counterfactuals  

Science Conference Proceedings (OSTI)

The ontology of decision theory has been subject to considerable debate in the past, and discussion of just how we ought to view decision problems has revealed more than one interesting problem, as well as suggested some novel modifications of classical ... Keywords: Artificial intelligence, Bayesianism, Causality, Conditionals, Counterfactuals, Decision theory, Deliberation, Planning, Probabilities, Rationality, Utility

Michael John Shaffer

2009-02-01T23:59:59.000Z

468

Real-Vector-Space Quantum Theory with a Universal Quantum Bit  

E-Print Network (OSTI)

We explore a model of the world based on real-vector-space quantum theory. In our model the familiar complex phase appearing in quantum states is replaced by a single binary object that we call the ubit, which is not localized and which can interact with any object in the world. Ordinary complex-vector-space quantum theory can be recovered from this model if we simply impose a certain restriction on the sets of allowed measurements and transformations (Stueckelberg's rule), but in this paper we try to obtain the standard theory, or a close approximation to it, without invoking such a restriction. We look particularly at the effective theory that applies to a subsystem when the ubit is interacting with a much larger environment. In a certain limit it turns out that the ubit-environment interaction has the effect of enforcing Stueckelberg's rule automatically, and we obtain a one-parameter family of effective theories--modifications of standard quantum theory--that all satisfy this rule. The one parameter is the ratio s/omega, where s quantifies the strength of the ubit's interaction with the rest of the world and omega is the ubit's rotation rate. We find that when this parameter is small but not zero, the effective theory is similar to standard quantum theory but is characterized by spontaneous decoherence of isolated systems.

Antoniya Aleksandrova; Victoria Borish; William K. Wootters

2012-10-16T23:59:59.000Z

469

A Theory of Baroclinic Turbulence  

Science Conference Proceedings (OSTI)

Understanding the physical mechanism maintaining fluid turbulence remains a fundamental theoretical problem. The two-layer model is an analytically and computationally simple system in which the dynamics of turbulence can be conveniently studied; ...

Brian F. Farrell; Petros J. Ioannou

2009-08-01T23:59:59.000Z

470

Adaptable optimization : theory and algorithms  

E-Print Network (OSTI)

Optimization under uncertainty is a central ingredient for analyzing and designing systems with incomplete information. This thesis addresses uncertainty in optimization, in a dynamic framework where information is revealed ...

Caramanis, Constantine (Constantine Michael), 1977-

2006-01-01T23:59:59.000Z

471

Stochastic models: theory and simulation.  

SciTech Connect

Many problems in applied science and engineering involve physical phenomena that behave randomly in time and/or space. Examples are diverse and include turbulent flow over an aircraft wing, Earth climatology, material microstructure, and the financial markets. Mathematical models for these random phenomena are referred to as stochastic processes and/or random fields, and Monte Carlo simulation is the only general-purpose tool for solving problems of this type. The use of Monte Carlo simulation requires methods and algorithms to generate samples of the appropriate stochastic model; these samples then become inputs and/or boundary conditions to established deterministic simulation codes. While numerous algorithms and tools currently exist to generate samples of simple random variables and vectors, no cohesive simulation tool yet exists for generating samples of stochastic processes and/or random fields. There are two objectives of this report. First, we provide some theoretical background on stochastic processes and random fields that can be used to model phenomena that are random in space and/or time. Second, we provide simple algorithms that can be used to generate independent samples of general stochastic models. The theory and simulation of random variables and vectors is also reviewed for completeness.

Field, Richard V., Jr.

2008-03-01T23:59:59.000Z

472

Testing axioms for Quantum Mechanics on Probabilistic toy-theories  

E-Print Network (OSTI)

In Ref. [1] one of the authors proposed postulates for axiomatizing Quantum Mechanics as a "fair operational framework", namely regarding the theory as a set of rules that allow the experimenter to predict future events on the basis of suitable tests, having local control and low experimental complexity. In addition to causality, the following postulates have been considered: PFAITH (existence of a pure preparationally faithful state), and FAITHE (existence of a faithful effect). These postulates have exhibited an unexpected theoretical power, excluding all known nonquantum probabilistic theories. Later in Ref. [2] in addition to causality and PFAITH, postulate LDISCR (local discriminability) and PURIFY (purifiability of all states) have been considered, narrowing the probabilistic theory to something very close to Quantum Mechanics. In the present paper we test the above postulates on some nonquantum probabilistic models. The first model, "the two-box world" is an extension of the Popescu-Rohrlich model, which achieves the greatest violation of the CHSH inequality compatible with the no-signaling principle. The second model "the two-clock world" is actually a full class of models, all having a disk as convex set of states for the local system. One of them corresponds to the "the two-rebit world", namely qubits with real Hilbert space. The third model--"the spin-factor"--is a sort of n-dimensional generalization of the clock. Finally the last model is "the classical probabilistic theory". We see how each model violates some of the proposed postulates, when and how teleportation can be achieved, and we analyze other interesting connections between these postulate violations, along with deep relations between the local and the non-local structures of the probabilistic theory.

Giacomo Mauro D'Ariano; Alessandro Tosini

2009-11-29T23:59:59.000Z

473

How Can Men Destined for Biochemical Failure After Androgen Deprivation and Radiotherapy Be Identified Earlier?  

SciTech Connect

Purpose: The significance of prostate-specific antigen (PSA) increases during the recovery of androgen after androgen deprivation therapy (ADT) and radiotherapy for prostate cancer is not well understood. This study sought to determine whether the initial PSA increase from undetectable after completion of all treatment predicts for eventual biochemical failure (BF). Methods and Materials: Between July 1992 and March 2004, 163 men with a Gleason score of 8-10 or initial PSA level >20 ng/mL, or Stage T3 prostate cancer were treated with radiotherapy (median dose, 76 Gy) and ADT and achieved an undetectable PSA level. The first detectable PSA level after the cessation of ADT was defined as the PSA sentinel rise (SR). A PSA-SR of >0.25, >0.5, >0.75, and >1.0 ng/mL was studied as predictors of BF (nadir plus 2 ng/mL). Cox proportional hazards models were used for univariate and multivariate analyses for BF adjusting for pretreatment differences in Gleason score, stage, PSA level (continuous), dose (continuous), and ADT duration (<12 vs. {>=}12 months). Results: Of the 163 men, 41 had BF after therapy. The median time to BF was 25 months (range, 4-96). The 5-year BF rate stratified by a PSA-SR of {<=}0.25 vs. >0.25 ng/mL was 28% vs. 43% (p = 0.02), {<=}0.5 vs. >0.5 ng/mL was 30% vs. 56% (p = 0.0003), {<=}0.75 vs. >0.75 ng/mL was 29% vs. 66% (p < 0.0001), and {<=}1.0 vs. >1.0 ng/mL was 29% vs. 75% (p < 0.0001). All four PSA-SRs were independently predictive of BF on multivariate analysis. Conclusion: The PSA-SR predicts for BF. A PSA-SR of >0.5 ng/mL can be used for early identification of men at greater risk of BF.

D'Ambrosio, David J. [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States); Ruth, Karen [Department of Biostatistics, Fox Chase Cancer Center, Philadelphia, PA (United States); Horwitz, Eric M.; Uzzo, Robert G. [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States); Pollack, Alan [Department of Urologic Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States); Buyyounouski, Mark K. [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States)], E-mail: mark.buyyounouski@fccc.edu

2008-04-01T23:59:59.000Z

474

To the Non-Local Theory of the High Temperature Superconductivity  

E-Print Network (OSTI)

The possibility of the non local physics application in the theory of superconductivity is investigated. It is shown that by the superconducting conditions the relay ("estafette") motion of the soliton' system ("attice ion - electron") is realizing by the absence of chemical bonds. From the position of the quantum hydrodynamics the problem of creation of the high temperature superconductors leads to finding of materials which lattices could realize the soliton' motion without destruction. These materials should be created using the technology of quantum dots. Key words: Foundations of the theory of transport processes; The theory of solitons; Generalized hydrodynamic equations; Foundations of quantum mechanics; high temperature superconductivity.

Boris V. Alexeev

2012-01-30T23:59:59.000Z

475

The motor theory of social cognition: a critique  

E-Print Network (OSTI)

Recent advances in the cognitive neuroscience of action have considerably enlarged our understanding of human motor cognition. In particular, the activity of the mirror system, first discovered in the brain of nonhuman primates, provides an observer with the understanding of a perceived action by means of the motor simulation of the agents observed movements. This discovery has raised the prospects of a motor theory of social cognition. In humans, social cognition includes the ability to mindread, and many motor theorists of social cognition try to bridge the gap between motor cognition and mindreading by endorsing a simulation account of mindreading. Here, we question the motor theory of social cognition and give reasons for our skepticism.

Pierre Jacob; Marc Jeannerod

2005-01-01T23:59:59.000Z

476

Understanding High-Temperature Superconductors with Quantum Cluster Theories  

SciTech Connect

Quantum cluster theories are a set of approaches for the theory of correlated and disordered lattice systems, which treat correlations within the cluster explicitly, and correlations at longer length scales either perturbatively or within a mean-field approximation. These methods become exact when the cluster size diverges, and most recover the corresponding (dynamical) mean-field approximation when the cluster size becomes one. Here we will review systematic dynamical cluster simulations of the two-dimensional Hubbard model, that display phenomena remarkably similar to those found in the cuprates, including antiferromagnetism, superconductivity and pseudogap behavior. We will then discuss results for the structure of the pairing mechanism in this model, obtained from a combination of dynamical cluster results and diagrammatic techniques.

Maier, Thomas A [ORNL; Jarrell, Mark [University of Cincinnati; Scalapino, Douglas [University of California, Santa Barbara

2007-01-01T23:59:59.000Z

477

Theory of Free Energy and Entropy in Noncovalent Binding HUAN-XIANG ZHOU AND MICHAEL K. GILSON  

E-Print Network (OSTI)

S1 Theory of Free Energy and Entropy in Noncovalent Binding HUAN-XIANG ZHOU AND MICHAEL K. GILSON 1 in a form that supports the present formulation of the theory of noncovalent binding. The free energy, F, provides a measure of the stability of a system at thermal equilibrium: the lower the free energy

Weston, Ken

478

Two Theories of Special Relativity ?  

E-Print Network (OSTI)

Recently, [3], it was shown that Special Relativity is in fact based on one single physical axiom which is that of Reciprocity. Originally, Einstein, [1], established Special Relativity on two physical axioms, namely, the Galilean Relativity and the Constancy of the Speed of Light in inertial reference frames. Soon after, [4,5], it was shown that the Galilean Relativity alone is sufficient for Special Relativity. Here it is important to note that, implicitly, three more assumptions have been used on space-time coordinate transformations, namely, the homogeneity of space-time, the isotropy of space, and a mathematical condition of smoothness type. In [3], a boundedness condition on space-time coordinate transformations is used instead of a usual mathematical smoothness type condition. In this paper it is shown that the respective boundedness condition is closely related to a Principle of Transformation Increment Ratio Limitation, or in short, PTIRL, which has an obvious physical meaning. It is also shown that PTIRL is {\\it not} a stronger assumption than that of the mentioned boundedness in [3]. Of interest is the fact that, by formulating PTIRL as a physical axiom, the possibility is opened up for the acceptance, or on the contrary, rejection of this physical axiom PTIRL, thus leading to {\\it two} possible theories of Special Relativity. And to add further likelihood to such a possibility, the rejection of PTIRL leads easily to effects which involve unlimited time and/or space intervals, thus are not accessible to usual experimentation for the verification of their validity, or otherwise.

Elemer E. Rosinger

2010-06-14T23:59:59.000Z

479

Conservation of resources theory and research use in health systems  

E-Print Network (OSTI)

Medical College, USA. 5 Manitoba Centre for Health Policy,of Medicine, University of Manitoba, Canada. 6 Institute ofSenior Researcher of the Manitoba Centre for Health Policy;

2010-01-01T23:59:59.000Z

480

Kresimir Burazin & Marko Vrdoljak Homogenisation theory for Friedrichs systems  

E-Print Network (OSTI)

trough projects 037­0372787­2795 and 037­1193086­ 3226, and DAAD project Centre of Excellence for parabolic and hyperbolic problems [25, 26, 32, 11], and one can naturally generalise this concept

Burazin, Kresimir

Note: This page contains sample records for the topic "biochemical systems theory" 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

Systems theory: melding the AI and simulation perspectives  

Science Conference Proceedings (OSTI)

The discipline of modelling and simulation (MaS) preceded artificial intelligence (AI) chronologically. Moreover, the workers in one area are typically unfamiliar with, and sometimes unsympathetic to, those in the other. One reason for this is that in ...

Norman Foo; Pavlos Peppas

2004-10-01T23:59:59.000Z

482

Electronic Structure Theory for Radicaloid Systems and Intermolecular Interactions  

E-Print Network (OSTI)

diagonalizing the pair energy matrix. However, we tried tofor diagonalizing the pair energy matrix. Currently, thethe update of the energy-weighted-matrix and the ov terms of

Kurlancheek, Westin

2011-01-01T23:59:59.000Z

483

Type IIB Flux Vacua from M-theory via F-theory  

E-Print Network (OSTI)

We study in detail some aspects of duality between type IIB and M-theory. We focus on the duality between type IIB string theory on K3 x T^2/Z_2 orientifold and M-theory on K3 x K3, in the F-theory limit. We give the explicit map between the fields and in particular between the moduli of compactification, studying their behavior under the F-theory limit. Turning on fluxes generates a potential for the moduli both in type IIB and in M-theory. We verify that the type IIB analysis gives the same results of the F-theory analysis. In particular, we check that the two potentials match.

Roberto Valandro

2008-11-18T23:59:59.000Z

484

The confining N = 1 supersymmetric gauge theories: A review  

Science Conference Proceedings (OSTI)

The authors give a classification and overview of the confining N = 1 supersymmetric gauge theories. For simplicity they consider only theories based on simple gauge groups and no tree-level superpotential. Classification of these theories can be done according to whether or not there is a superpotential generated for the confined degrees of freedom. The theories with the superpotential include s-confining theories and also theories where the gauge fields participate in the confining spectrum, while theories with no superpotential include theories with a quantum deformed moduli space and theories with an affine moduli space.

Csaki, C. [Univ. of California, Berkeley, CA (United States). Dept. of Physics]|[Lawrence Berkeley National Lab., CA (United States). Physics Div.

1998-08-01T23:59:59.000Z

485

Creating a systemic functional grammar corpus from the Penn treebank  

Science Conference Proceedings (OSTI)

The lack of a large annotated systemic functional grammar (SFG) corpus has posed a significant challenge for the development of the theory. Automating SFG annotation is challenging because the theory uses a minimal constituency model, allocating as much ...

Matthew Honnibal; James R. Curran

2007-06-01T23:59:59.000Z

486

Using grounded theory to study the experience of software development  

Science Conference Proceedings (OSTI)

Grounded Theory is a research method that generates theory from data and is useful for understanding how people resolve problems that are of concern to them. Although the method looks deceptively simple in concept, implementing Grounded Theory research ... Keywords: Empirical software engineering research, Grounded theory, Qualitative research, Theory generation

Steve Adolph; Wendy Hall; Philippe Kruchten

2011-08-01T23:59:59.000Z

487

ABJM theory as a Fermi gas  

E-Print Network (OSTI)

The partition function on the three-sphere of many supersymmetric Chern-Simons-matter theories reduces, by localization, to a matrix model. We develop a new method to study these models in the M-theory limit, but at all orders in the 1/N expansion. The method is based on reformulating the matrix model as the partition function of an ideal Fermi gas with a non-trivial, one-particle quantum Hamiltonian. This new approach leads to a completely elementary derivation of the N^{3/2} behavior for ABJM theory and N=3 quiver Chern-Simons-matter theories. In addition, the full series of 1/N corrections to the original matrix integral can be simply determined by a next-to-leading calculation in the WKB or semiclassical expansion of the quantum gas, and we show that, for several quiver Chern-Simons-matter theories, it is given by an Airy function. This generalizes a recent result of Fuji, Hirano and Moriyama for ABJM theory. It turns out that the semiclassical expansion of the Fermi gas corresponds to a strong coupling expansion in type IIA theory, and it is dual to the genus expansion. This allows us to calculate explicitly non-perturbative effects due to D2-brane instantons in the AdS background.

Marcos Marino; Pavel Putrov

2011-10-18T23:59:59.000Z

488

String theory and the real world  

Science Conference Proceedings (OSTI)

We live in exciting times for particle physics. The Large Hadron Collider (LHC) at CERN has begun to collect data, and laboratory and satellite experiments are investigating the dark matter of the universe. Another, less appreciated fact increases the excitement. Physicists now have a coherent, consistent theoretical framework to address basic questions about particles, the interactions and forces between them, why they are what they are, and how numerous phenomena are related in a broader picture. That framework is ''string theory''. I put the term in scare quotes because there is not yet a final formulation of the theory. But the lack of a finished picture is not important for my purposes, so in this article I refer to the framework as string theory or M-theory. The perspective that string theory is the underlying framework to address many issues facing particle physics and cosmology is different from the more standard description of it as a consistent quantum theory of gravity. But it is a fruitful way to think about what string theory means.

Kane, Gordon [University of Michigan, Ann Arbor (United States)

2010-11-15T23:59:59.000Z

489

Optimiziing the laboratory monitoring of biological wastewater-purification systems  

SciTech Connect

Optimization of the laboratory monitoring of biochemical wastewater-treatment systems at coke plants is considered, for the example of OAO Koks. By adopting a methodological approach to determine the necessary data from chemical analysis, it is possible to reduce the time, labor, and materials required for monitoring, without impairing the purification process or compromising the plant's environmental policies.

S.V. Gerasimov [OAO Koks, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

490

Instructional Transaction Theory - An Introduction  

E-Print Network (OSTI)

Instructional transactions are instructional algorithms, patterns of learner interactions, usually far more complex than a single display and a single response, which have been designed to enable the learner to acquire a certain kind of knowledge or skill. Different kinds of knowledge and skill would require different kinds of transactions. The necessary set of these instructional transactions are designed and programmed once, like other computer applications such as spread sheets. They can then be used with different content topics as long as these topics are of a similar kind of knowledge or skill. A transaction shell is the structure of a transaction identifying the interactions, parameters, and knowledge representation needed for a given class of transactions. A transaction shell is a piece of computer code that, when delivered to a student via an appropriate delivery system, causes a transaction to occur. A transaction shell consists of two subsystems: an authoring environment and a delivery environment. The users of the authoring environment are subject matter experts and instructors; the users of the delivery environment are students. The authoring environment has a knowledge acquisition system and a transaction configuration system. The knowledge acquisition system queries a subject matter expert concerning the knowledge and skill required by the enterprise. This information is organized and stored in a knowledge base. The transaction configuration system enables the instructor, or designer, to provide values for a wide range of instructional parameters. These parameters control the nature of the interactions with the learner. Instructional parameters enable a given transaction shell to be customized for a particular student population, learning environment, ...

M. David Merrill; Zhongmin Li; Mark K. Jones

1990-01-01T23:59:59.000Z

491

Quantum Algorithms for Quantum Field Theories  

E-Print Network (OSTI)

Quantum field theory reconciles quantum mechanics and special relativity, and plays a central role in many areas of physics. We develop a quantum algorithm to compute relativistic scattering probabilities in a massive quantum field theory with quartic self-interactions (phi-fourth theory) in spacetime of four and fewer dimensions. Its run time is polynomial in the number of particles, their energy, and the desired precision, and applies at both weak and strong coupling. In the strong-coupling and high-precision regimes, our quantum algorithm achieves exponential speedup over the fastest known classical algorithm.

Stephen P. Jordan; Keith S. M. Lee; John Preskill

2011-11-15T23:59:59.000Z

492

Theory of space charge limited currents  

SciTech Connect

Space-charge-limited currents are important in energy devices such as solar cells and light-emitting diodes, but the available theory from the 1950's finds it necessary to postulate an exponential density of defect energy levels to match data. Here we revisit the theory and show that this postulate is not warranted. Instead, we demonstrate that dopants and the concomitant Frenkel effect, which have been neglected, control the shape of measured current-voltage characteristics. We also account for the observed peak in the noise power. Finally, the new theory can anchor efforts to develop experimental techniques to measure deep-trap levels.

Zhang, Xiaoguang [ORNL; Pantelides, Sokrates T. [Vanderbilt University

2012-01-01T23:59:59.000Z

493

Extended Chaos Theory and Multiparticle Production  

E-Print Network (OSTI)

First, using the method of the soliton-solution, the fermion probability density equation, which corresponds to the Dirac equation, is derived. Next, we extend the chaos theory, in which the period bifurcation is equivalent to the particle production. Then this extended chaos theory can be used for description of the multiparticle production and the extensive air showers at high energy. Let the parameter takes a suitable value, the quantitative results will be obtained, and an approximate formula will be derived. Many properties of the multiparticle production and of the chaos theory are universal.

Yi-Fang Chang

2008-08-02T23:59:59.000Z

494

Algebraic K-theory and cubical descent  

E-Print Network (OSTI)

In this note we apply Guillen-Navarro descent theorem, \\cite{GN02}, to define a descent variant of the algebraic $K$-theory of varieties over a field of characteristic zero, $\\mathcal{KD}(X)$, which coincides with $\\mathcal{K}(X)$ for smooth varieties. After a result of Haesemeyer, this new theory is equivalent to the homotopy algebraic $K$-theory introduced by Weibel. We also prove that there is a natural weight filtration on the groups $KH_\\ast(X)$.

Gainza, Pere Pascual

2007-01-01T23:59:59.000Z

495

Thermal Density Functional Theory in Context  

E-Print Network (OSTI)

This chapter introduces thermal density functional theory, starting from the ground-state theory and assuming a background in quantum mechanics and statistical mechanics. We review the foundations of density functional theory (DFT) by illustrating some of its key reformulations. The basics of DFT for thermal ensembles are explained in this context, as are tools useful for analysis and development of approximations. We close by discussing some key ideas relating thermal DFT and the ground state. This review emphasizes thermal DFT's strengths as a consistent and general framework.

Pribram-Jones, Aurora; Gross, E K U; Burke, Kieron

2013-01-01T23:59:59.000Z

496

Three approaches to classical thermal field theory  

SciTech Connect

Research Highlights: > Classical thermal field theory admits three equivalent path integral formulations. > Classical Feynman rules can be derived for all three formulations. > Quantum Feynman rules reduce to classical ones at high temperatures. > Classical Feynman rules become much simpler when superfields are introduced. - Abstract: In this paper we study three different functional approaches to classical thermal field theory, which turn out to be the classical counterparts of three well-known different formulations of quantum thermal field theory: the closed-time path (CTP) formalism, the thermofield dynamics (TFD) and the Matsubara approach.

Gozzi, E., E-mail: gozzi@ts.infn.it [Department of Physics, University of Trieste, Strada Costiera 11, Miramare - Grignano, 34151 Trieste (Italy); INFN, Sezione di Trieste (Italy); Penco, R., E-mail: rpenco@syr.edu [Department of Physics, Syracuse University, Syracuse, NY 13244-1130 (United States)

2011-04-15T23:59:59.000Z

497

Quantum Algorithms for Quantum Field Theories  

E-Print Network (OSTI)

Quantum field theory reconciles quantum mechanics and special relativity, and plays a central role in many areas of physics. We develop a quantum algorithm to compute relativistic scattering probabilities in a massive quantum field theory with quartic self-interactions (phi-fourth theory) in spacetime of four and fewer dimensions. Its run time is polynomial in the number of particles, their energy, and the desired precision, and applies at both weak and strong coupling. In the strong-coupling and high-precision regimes, our quantum algorithm achieves exponential speedup over the fastest known classical algorithm.

Jordan, Stephen P; Preskill, John

2011-01-01T23:59:59.000Z

498

Chiral field theory of 0{sup -+} glueball  

Science Conference Proceedings (OSTI)

A chiral field theory of 0{sup -+} glueball is presented. The Lagrangian of this theory is constructed by adding a 0{sup -+} glueball field to a successful Lagrangian of the chiral field theory of pseudoscalar, vector, and axial-vector mesons. The couplings between the pseodoscalar glueball field and the mesons are revealed via a U(1) anomaly. Quantitative study of the physical processes of the 0{sup -+} glueball of m=1.405 GeV is presented. The theoretical predictions can be used to identify the 0{sup -+} glueball.

Li Bingan [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States)

2010-06-01T23:59:59.000Z

499

Fuzzy Systems in Biomedicine  

Science Conference Proceedings (OSTI)

The chapter presents recent advances of fuzzy systems in biomedicine. A short introduction is made on the main concepts of fuzzy sets theory. Then, a survey of recent research reports (2000 and beyond) is performed, in order to map existing theoretical ... Keywords: Biomedicine, Fuzzy Systems, Survey

Georgios Dounias

2007-06-01T23:59:59.000Z

500

David Kaplan LRP Working Group 2007 Nuclear Theory  

E-Print Network (OSTI)

projected excited states (2006) · Advances in microscopic theories of fission and fusion Improved fission theory (2004-2005) Time-dependent mean field theory approaches to fusion (2006) · Algebraic treatment

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group