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One- and Two-Dimensional Wave Fronts in Diffusive Systems With Discrete Sets of Nonlinear Sources

Description: The authors study the dynamics of on- and two-dimensional diffusion systems with sets of discrete nonlinear sources. They show that wave fronts propagating in such systems are pinned if the diffusion constant is below a critical value which corresponds to a saddle-node bifurcation of the dynamics. In two dimensions they find that the dissipation is enhanced and moving plain and circular fronts are stable with respect to any perturbations.
Date: May 11, 1998
Creator: Mitkov, I.
Item Type: Refine your search to only Article
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One and two electron integrals over Cartesian Gaussian functions

Description: A formalism is developed which allows overlap, kinetic energy, potential energy and electron repulsion integrals over cartesian Gaussian functions to be expressed in a very compact form involving easily computed auxiliary functions. Similar formulas involving the same auxiliary functions are given for the common charge moments, electric-field operators, and spin-interaction operators. Recursion relations are given for the auxiliary functions which make possible the use of Gaussian functions of … more
Date: January 1, 1976
Creator: McMurchie, L. E. & Davidson, E. R.
Item Type: Refine your search to only Report
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ONE- AND TWO-PROTON INCLUSIVE SPECTRA IN 800 MeV PROTON-NUCLEUS COLLISIONS AND THE MEAN FREE PATH OF PROTONS IN NUCLEI

Description: One- and two-proton inclusive spectra have been measured in collisions of 800 MeV protons with C, NaF, KCl, Cu, and Pb targets. The single proton inclusive yield increases monotonically with target mass, while the two-proton yield at {theta}{sub Lab}=± 40° associated with pp quasi-elastic scatterings shows a maximum at a mass number of about 50. A model calculation reproduces the observed target mass dependence with a mean free path of ~2.5 fm for 800 MeV protons inside the nucleus.
Date: October 1, 1980
Creator: Tanihata, I.; Nagamiya, S.; Schnetzer, S. & Steiner, H.
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One-Angstrom microscope update

Description: The One-Angstrom Microscope project has attained its goal, and is now producing images down to 1 Angstrom resolution. We have demonstrated transmission electron microscopy of defect structures down to a resolution of 1.1 Angstrom, with evidence that 0.89 Angstrom will be possible. This level of resolution will soon be made available to all those NCEM users who have a requirement for sub-Angstrom resolution.
Date: April 4, 1999
Creator: O'Keefe, Michael A.
Item Type: Refine your search to only Report
open access

One-atom detection and statistical studies with resonance ionization spectroscopy

Description: To learn how to take matter apart atom-by-atom and to count each atom according to its type, regardless of its initial chemical or physical state, is presumably a worthy goal in scientific research. The advent of the laser created real hope that these aspirations will be realized. The counting of atoms is not merely an intellectual exercise set apart from real-world applications. On the contrary, even though the capability is scarcely more than five years old, practical applications have been m… more
Date: January 1, 1982
Creator: Payne, M.G. & Hurst, G.S.
Item Type: Refine your search to only Article
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One-Axis Trackers -- Improved Reliability, Durability, Performance, and Cost Reduction; Final Subcontract Technical Status Report, 2 May 2006 - 31 August 2007

Description: The overall objective of this subcontract is to reduce the total cost of electricity generated by single-axis tracking solar energy systems for utility and other large-scale commercial applications by improving performance and reliability and by reducing installation time, cost, and environmental impact.
Date: February 1, 2008
Creator: Shingleton, J.
Item Type: Refine your search to only Report
open access

One Bacterial Cell, One Complete Genome

Description: While the bulk of the finished microbial genomes sequenced to date are derived from cultured bacterial and archaeal representatives, the vast majority of microorganisms elude current culturing attempts, severely limiting the ability to recover complete or even partial genomes from these environmental species. Single cell genomics is a novel culture-independent approach, which enables access to the genetic material of an individual cell. No single cell genome has to our knowledge been closed and… more
Date: April 26, 2010
Creator: Woyke, Tanja; Tighe, Damon; Mavrommatis, Konstantinos; Clum, Alicia; Copeland, Alex; Schackwitz, Wendy et al.
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A One-Body Transport Model of Fluctuation Processes in Nuclear Collisions

Description: Many aspects of a many-body system can be described in terms of one- body transport models in which the system at any time is characterized by its single-particle density rather than by the full many-body information. In these one-body models evaluation of the single-particle density is determined by a transport equation which contains the self-consistent mean-field potential and a collision term due to binary two-body collisions. Recently, this approach in a semi-classical limit with a Boltzma… more
Date: January 1, 1990
Creator: Ayik, S.; Gregoire, C.; Suraud, E.; Stryjewski, J. & Belkacem, M.
Item Type: Refine your search to only Article
open access

One bump lattice studies

Description: The author has developed a method of measuring the lattice in the Main Ring using a series of closed orbit measurements taken with assorted 1-bumps around the ring. The data is fit using the MINUIT fitting package in a method similar to that used by Shekhar Shukla in the Booster. The Minuit package then performs a chi square fitting to the beta, phase, tune and kick strength. This method has been tested on simulated data, but past measurements have had difficulties in real data. One of the prob… more
Date: January 1, 1995
Creator: Wu, Guan Hong
Item Type: Refine your search to only Report
open access

A one-campus SSC

Description: Advantages of the one-campus superconducting super collider with bypass-clustered Interaction Region arrangement are enumerated. Designs for double-bypass arrangements with 4 and 6 interaction points are examined and presented. Compared to the conceptual design given in the Conceptual Design Report, the only drawback identified is the additional dipoles required which amounts to approx.20% for the 6 Interaction Point arrangements and approx.10% for the 4 Interaction Point arrangements. (LSP)
Date: April 1, 1987
Creator: Lederman, L.M. & Teng, L.C.
Item Type: Refine your search to only Report
open access

One carbon metabolism in anaerobic bacteria: Regulation of carbon and electron flow during organic acid production

Description: This reporting period, progress is reported on the following: metabolic pathway of solvent production in B. methylotrophicum; the biochemical mechanism for metabolic regulation of the succinate fermentation; models to understand the physiobiochemical function of formate metabolism in anaerobes and; models for understanding the influence of low pH on one carbon metabolism. (CBS)
Date: January 1, 1992
Creator: Zeikus, J. G. & Jain, M. K.
Item Type: Refine your search to only Report
open access

One carbon metabolism in anaerobic bacteria: Regulation of carbon and electron flow during organic acid production

Description: The project deals with understanding the fundamental biochemical mechanisms that physiologically control and regulate carbon and electron flow in anaerobic chemosynthetic bacteria that couple metabolism of single carbon compounds and hydrogen to the production of organic acids (formic, acetic, butyric, and succinic) or methane. The authors compare the regulation of carbon dioxide and hydrogen metabolism by fermentation, enzyme, and electron carrier analysis using Butyribacterium methylotrophicu… more
Date: December 31, 1993
Creator: Zeikus, J. G. & Jain, M.
Item Type: Refine your search to only Report
open access

One carbon metabolism in anaerobic bacteria: Regulation of carbon and electron flow during organic acid production. Progress report, June 1990--May 1992

Description: This reporting period, progress is reported on the following: metabolic pathway of solvent production in B. methylotrophicum; the biochemical mechanism for metabolic regulation of the succinate fermentation; models to understand the physiobiochemical function of formate metabolism in anaerobes and; models for understanding the influence of low pH on one carbon metabolism. (CBS)
Date: April 1, 1992
Creator: Zeikus, J. G. & Jain, M. K.
Item Type: Refine your search to only Report
open access

One-carbon /sup 13/C-labeled synthetic intermediates. Comparison and evaluation of preparative methods

Description: Frequently the biggest stumbling block to the synthesis of a structurally complex labeled compound is obtaining the required low molecular weight, structurally simple, isotopic intermediates. Selection of a particular scheme from various alternatives depends on the available capabilities and quantity of product desired, as well as on anticipated future requirements and need for related compounds. Many of the newer reagents for organic synthesis can be applied effectively to isotopic preparation… more
Date: January 1, 1978
Creator: Ott, Donald G.
Item Type: Refine your search to only Article
open access

The one charged particle decay modes of the tau

Description: Tables of measurements of the total branching fraction of tau lepton decays to modes with one charged particle are given along with the major individual branching fractions. The reason a combination of measurements and calculations is needed to display the discrepancy is described briefly. It is argued that uncertainties in measurements of the branching fractions for multiple photon decay modes prevent complete reliance on experiment. The multiple photon modes are discussed in more detail. Pres… more
Date: November 1, 1987
Creator: Perl, Martin L.
Item Type: Refine your search to only Article
open access

A one-class classifier for identifying urban areas in remotely-sensed data

Description: For many remote sensing applications, land cover can be determined by using spectral information alone. Identifying urban areas, however, requires the use of texture information since these areas are not generally characterized by a unique spectral signature. We have designed a one-class classifier to discriminate between urban and non-urban data. The advantage to using our classification technique is that principles of both statistical and adaptive pattern recognition are used simultaneously. … more
Date: May 1, 1992
Creator: Kelly, P. M.; Hush, D. R. & White, J. M.
Item Type: Refine your search to only Article
open access

A one-class classifier for identifying urban areas in remotely-sensed data

Description: For many remote sensing applications, land cover can be determined by using spectral information alone. Identifying urban areas, however, requires the use of texture information since these areas are not generally characterized by a unique spectral signature. We have designed a one-class classifier to discriminate between urban and non-urban data. The advantage to using our classification technique is that principles of both statistical and adaptive pattern recognition are used simultaneously. … more
Date: January 1, 1992
Creator: Kelly, Patrick M.; Hush, Don R. & White, James M.
Item Type: Refine your search to only Article
open access

One Component Two Phase Flow in Horizontal and Vertical Ducts: Some Basic Considerations

Description: For a description and analysis of the flow they consider the conservation equations of the two phases separately, but in thermal and mechanical equilibrium, coupled by the itnerface shear forces (two fluid model, drift flux model). Coupling may be weak or strong, depending on Froude and Mach numbers of the flow. The fluid is highly compressible, not because the individual phases move at such speeds that their individual density changes are significant but because evapiration (phase change) resu… more
Date: December 15, 1983
Creator: Maeder, Paul F.; Dickinson, David A. & Nikitopoulos, Dimitris E.
Item Type: Refine your search to only Article
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A One-Dimensional (1-D) Three-Region Model for a Bubbling Fluidized-Bed Adsorber

Description: A general one-dimensional (1-D), three-region model for a bubbling fluidized-bed adsorber with internal heat exchangers has been developed. The model can predict the hydrodynamics of the bed and provides axial profiles for all temperatures, concentrations, and velocities. The model is computationally fast and flexible and allows for any system of adsorption and desorption reactions to be modeled, making the model applicable to any adsorption process. The model has been implemented in both gPROM… more
Date: January 1, 2012
Creator: Lee, Andrew & Miller, David C.
Item Type: Refine your search to only Article
open access

One-Dimensional Analysis of Choked-Flow Turbines

Description: "Turbines for most applications requiring high work output per stage have one or more blade rows which are choked. This analysis indicated that the area ratios and equivalent blade speed are the controlling factors in the design and operation of such turbines. Six criteria are stated that will aid in establishing from test data of multistage turbines which blade rows are choked and which are not" (p. 1).
Date: 1953
Creator: English, Robert E. & Cavicchi, Richard H.
Item Type: Refine your search to only Report
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