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Displaying 26801 - 26825 of 74171

Separation and Characterization of Double Wall Carbon Nanotube Sub-Populations

July 8, 2010
Author(s)
JiYeon Huh, Angela R. Hight Walker, Hyun W. Ro, Jan Obrzut, Jeffrey Fagan
We present the separation of surfactant encapsulated double wall carbon nanotubes (DWCNTs) synthesized by the high pressure carbon monoxide decomposition (HiPco) process by length and electronic characteristics using density gradient ultracentrifugation

Community Risk Assessment Modeling: Results of Residential Fireground Field Experiments

July 7, 2010
Author(s)
Adam M. Barowy, Kathy Notarianni, Jason D. Averill, Lori Moore-Merrell, Robert Santos
This paper presents an overview of a large multi-year, multi-partner research study on Firefighter Safety and Deployment of Resources as well as specific results from more than 60 laboratory and residential fireground experiments designed to quantify the

Shell and ligand-dependent blinking of CdSe-based core/shell nanocrystals

July 7, 2010
Author(s)
Bonghwan Chon, Sung Jun Lim, Wonjung Kim, Hyeong G. Kang, Taiha Joo, Jeeseong C. Hwang, Seung Koo Shin
Blinking of zinc blende CdSe-based core/shell nanocrystals is studied as a function of shell materials and surface ligands. CdSe/ZnS, CdSe/ZnSe/ZnS and CdSe/CdS/ZnS core/shell nanocrystals are prepared by colloidal synthesis and six monolayers of larger

Why Contacts Matter

July 7, 2010
Author(s)
David J. Gundlach, Y. Li, D. A. Zhou, D A. Mourey, Thomas Jackson

Quality Assessment Algorithm for Vapor-Liquid Equilibrium Data

July 6, 2010
Author(s)
Jeongwon Kang, Vladimir Diky, Robert D. Chirico, Joe W. Magee, Chris D. Muzny, Ilmutdin M. Abdulagatov, Andrei F. Kazakov, Michael D. Frenkel
A quality assessment algorithm for vapor-liquid equilibrium (VLE) data has been developed. The proposed algorithm combines four widely used tests of VLE consistency based on the requirements of the Gibbs-Duhem equation with a check of consistency between

We need more "smarts" for the Society activity in Smart Grid

July 6, 2010
Author(s)
Galen H. Koepke, Donald Heirman
This editorial column in the Newsletter describes a recent "EMC for the Smart Grid" workshop held at Connectivity Week 2010 in Santa Clara, CA. The text is based on a meeting report from the workshop supplemented with remarks by the Associate Editor for

A Flame Model for Melting and Dripping Polymers

July 5, 2010
Author(s)
Kathryn M. Butler, Sergio R. Idelsohn, Julio M. Marti, Eugenio Onate, Riccardo Rossi
The versatility of polymeric materials, as demonstrated in such features as high strength, low weight, ease of processing, and capability to form into complex shapes, have led to their widespread industrial application in aircraft structures

Chemical Species and Temperature Mapping in Full Scale Underventilated Compartment Fires

July 5, 2010
Author(s)
Andrew J. Lock, Matthew F. Bundy, Erik L. Johnsson, Kelly M. Opert, Anthony P. Hamins, Cheolhong Hwang, Ki Y. Lee
Many injuries and deaths throughout the world are caused by fires each year. Many of the deaths are the result of toxic gas inhalation, such as carbon monoxide, by a victim remote from the actual fire source. In order to facilitate better building

Modeling Thermoplastic Melt Spread Over Different Flooring Materials

July 5, 2010
Author(s)
Kathryn M. Butler, Eugenio Onate, Riccardo Rossi, Julio M. Marti, Sergio R. Idelsohn
The effects of the thermal properties of three flooring materials on the spread rate of polymer melt over the surface were studied using a model based on the Particle Finite Element Method (PFEM). The high thermal conductivity of steel keeps the steel

Numerical Simulation of Polymeric Materials in UL 94 Test: Competition Between Gasification and Melt Flow / Dripping

July 5, 2010
Author(s)
Kathryn M. Butler, Florian Kempel, Bernhard Schartel, Anja Hofmann, Eugenio O?, Sergio R. Idelsohn, Riccardo Rossi, Julio M. Marti
The capability of the Particle Finite Element Method (PFEM, developed by CIMNE) to model the complex fire behaviour of polymers in the UL 94 scenario was investigated. For validation, a series of four PC/ABS blends were chosen, which covered different UL

MODELING THE BURNING OF COMPLICATED OBJECTS USING LAGRANGIAN PARTICLES

July 4, 2010
Author(s)
Kevin B. McGrattan, Randall J. McDermott, William E. Mell, Glenn P. Forney, Jason E. Floyd, Simo A. Hostikka
A methodology is described for representing complicated objects within a computational fluid dynamics model. These objects are typically collections of similar items that are too small to define on the numerical grid that is used to solve the governing

Ettore Majorana and the birth of autoionization

July 2, 2010
Author(s)
Charles W. Clark, Ennio Arimondo, William C. Martin
In the early days of theoretical atomic spectroscopy, Ettore Majorana (1906-1938?) solved several outstanding problems by developing the theory of autoionization. Later literature makes only sporadic references to this accomplishment. Reviewing his work in

Large Magnetic Susceptibility Anisotropy of Metallic Carbon Nanotubes

July 2, 2010
Author(s)
Jeffrey A. Fagan, Erik K. Hobbie, Jun Kono, Thomas Searles, Y Imanaka, T Takamasu, H Ajiki
Through magnetic linear dichroism spectroscopy, the magnetic susceptibility anisotropy of metallic single-walled carbon nanotubes has been extracted and found to be 2-4 times greater than values for semiconducting single-walled carbon nanotubes. This large

The Second Static Analysis Tool Exposition (SATE) 2009

July 2, 2010
Author(s)
Vadim Okun, Paul E. Black, Aurelien M. Delaitre
The NIST SAMATE project conducted the second Static Analysis Tool Exposition (SATE) in 2009 to advance research in static analysis tools that find security defects in source code. The main goals of SATE were to enable empirical research based on large test

A Sensor-Driven Fire Model, Version 1.2

July 1, 2010
Author(s)
William D. Davis
Modern building fire sensors are capable of supplying substantially more information to the fire service than just the simple detection of a possible fire. In order to use this information, a decision support system needs to be developed that interprets a

Block shear failure of steel gusset plates

July 1, 2010
Author(s)
Chiara Crosti, Dat Duthinh
Following the catastrophic failure of the I-35W bridge in Minnesota in 2007, the Federal Highway Admin-istration issued guidelines for the load rating of bolted and riveted gusset plates in truss bridges (FHWA, 2009). This paper develops finite-element

Calibration service for instruments that measure laser beam diameter

July 1, 2010
Author(s)
Shao Yang
This document describes the calibration service for instruments that measure laser beam diameter. An overview of the measurement procedures, measurement system, and uncertainty analysis is presented. A sample measurement report is included in this document

Detecting Cooling Coil Fouling Automatically-Part 1: A Novel Concept

July 1, 2010
Author(s)
Daniel A. Veronica
Fouling of surfaces within the heat exchangers of heating, ventilating, and air conditioning (HVAC) systems of buildings is an equipment fault that wastes appreciable amounts of energy, however, it escapes detection under current building automation
Displaying 26801 - 26825 of 74171
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