Now showing items 7442-7461 of 10281

• #### Simulated impact of NOx on SOA formation from oxidation of toluene and m-xylene ﻿

(2014-04-22)
Despite the crucial role of aromatic-derived secondary organic aerosol (SOA) in deteriorating air quality, its formation mechanism is not well understood, and the dependence of aromatic SOA formation on nitrogen oxides ...
• #### Simulating the driven magnetosphere ﻿

(2005)
A significant effort is focused on understanding the behavior of the Earth's magnetosphere during times of southward interplanetary magnetic field, when the magnetosphere is in a driven state. In situ observations of the ...
• #### Simulating Z' boson going to positron electron events at sqrt.s = 40 TeV to evaluate a proposed silicon-scintillating fiber tracking system for SDC ﻿

(1992)
Computer simulation is used to study the ability of a proposed silicon-scintillating fiber tracking system for SDC to correctly interpret $Z\sp\prime\to e\sp+e\sp-$ events. Two versions of the Lund Monte Carlo model for ...
• #### SIMULATION AND DESIGN OF PUMPING AND INJECTION SCHEMES FOR AQUIFER RESTORATION UNDER VARIABLE HYDROGEOLOGIC CONDITIONS ﻿

(1987)
The USGS MOC Model is a useful tool for evaluating different well patterns in an aquifer restoration scheme under variable hydrogeologic conditions. The best well pattern for a groundwater cleanup is highly site-specific ...
• #### Simulation and Optimization of ESA Designs for Space Plasma Missions ﻿

(2011)
A novel electrostatic analyzer (ESA) simulation method that differs significantly from traditional methods is presented in this study, the "reverse-fly" simulation method. The simulation process and its applications are ...
• #### Simulation of CO2 sequestration in saline aquifers using discontinuous Galerkin method ﻿

(2014-08-01)
Carbon dioxide disposal into deep aquifer has been an important venue to trap excess gas emission which causes global warming. In the CO2 sequestration process, CO2 is captured from the point source and injected into the ...
• #### Simulation of Dislocated Flux in Space Plasma Environments: Applications in Geospace Modeling and Ionosphere-Magnetosphere Coupling ﻿

(2015-04-23)
In this study, simulations of a dislocated flux tube are used to model oscillatory flow events and to explore possible ionospheric-magnetospheric coupling mechanisms. A numerical code called the Thin Filament Code (TFC) ...
• #### Simulation of dynamics of radiation belt electrons during geomagnetic storms driven by high speed solar wind streams ﻿

(2007)
Satellite observations have shown that fluxes of relativistic electrons in the earth's radiation belts can vary by orders of magnitude during periods of high solar activity. Understanding the dynamic behavior of these ...
• #### Simulation of effects of ethanol on benzene plume length using RT3D with a general substrate interaction module ﻿

(2007)
A mathematical module was developed to evaluate the effect of the common fuel additive, ethanol, on benzene fate and transport in groundwater, and to discern the most influential benzene plume-elongating mechanisms. The ...
• #### Simulation of nonlinear performance of a top fuel dragster race car ﻿

(2010)
In order to analyze and increase the performance of a top fuel dragster, a dynamic model of the car was developed in this thesis. The drag racing car is moving mainly in a rectilinear/one dimensional mode, nevertheless, a ...
• #### Simulation of oxygen transport in capillaries ﻿

(1988)
A mathematical model is developed to predict oxygen transport from large capillaries. The model includes diffusion and convection in the plasma and rbc and the reaction in the rbcs. It also includes the radial distribution ...
• #### Simulation of radiation belt electron diffusion ﻿

(2007)
This thesis presents theoretical and numerical studies of the radial diffusion of relativistic radiation belt electrons. The research has been focused particularly on the radiation belt phase space density profile, and ...
• #### Simulation of shared memory parallel systems ﻿

(1990)
This thesis describes a method to simulate parallel programs written for shared memory multiprocessors. We have extended execution-driven simulation to facilitate the simulation of shared memory. We have developed a shared ...
• #### Simulation of viscous fingering during miscible displacement in nonuniform porous media ﻿

(1988)
Numerical simulation is used to study the effect of different factors on unstable miscible displacement and to clarify the mechanisms of finger growth and interaction. The two-dimensional equations of miscible displacement ...
• #### Simulation-driven design of high-performance programmable network interface cards ﻿

(2004)
As network link speeds race to 10 Gigabit/sec and beyond, Internet servers will rely on programmable network interface cards (NICs) to relieve the ever increasing frame processing burdens. To meet that need, this work ...
• #### Simulations of Carbon Nano-Structures for High-Strength Composites, Thermal Transport, and Hydrogen Storage ﻿

(2014-11-18)
Computational simulations and theoretical analysis are keys to understand and predict chemical or physical behaviors of carbon nano-materials. Carbon nano-materials such as carbon nanotubes (CNT) and graphene are claimed ...
• #### Simultaneous conductive and radiative heat transfer through multiple-layer insulation in a space environment ﻿

(1968)
Multiple-layer insulation consisting of alternate layers of radiation shield and spacer material, covering a surface with a fixed temperature in a space environment, is analyzed. The insulation is assumed to be composed ...
• #### SIMULTANEOUS GROUND AND ROCKET BASED MEASUREMENTS OF ELECTRIC FIELDS AND CURRENTS IN AN AURORAL ARC ﻿

(1980)
A Terrier-Malemute sounding rocket was launched into a stable, premidnight auroral arc. Among the instruments carried by the payload were a cesium vapor magnetometer, electrostatic curved-plate electron energy analyzers, ...
• #### SINGLE AND MULTIPLE IONIZATION OF SULFUR ATOMS BY ELECTRON IMPACT ﻿

(1982)
Laboratory measurements of the cross sections for single, double, triple, and quadruple ionization of sulfur atoms by electron impact are presented for collision energies from threshold to 500 eV. The cross sections for ...
• #### Single gene evolution: A punctuated history of chance events ﻿

(2005)
In the present work I have developed and characterized an in vivo selection system to investigate molecular evolution. The essential gene that codes for adenylate kinase (AK; EC 2.4.7.3) in the gram-positive moderate ...