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Displaying 21951 - 21975 of 73929

A Microporous Metal-Organic Framework of a Rare sty Topology for High CH 4 Storage at Room Temperature

February 22, 2013
Author(s)
Xing Duan, Jiancan Yu, Jianfeng Cai, Yabing He, Chuande Wu, Wei Zhou, Taner N. Yildirim, Zhangjing Zhang, Shengchang Xiang, Michael O'Keeffe, Banglin Chen, Guodong Qian
A rare sty type microporous metal-organic framework Cu 2(FDDI) (ZJU-25; H 4FDDI = tetramethyl 5,5'-(9H-fluorene-2,7-diyl)diisophthalate acid) was solvothermally synthesized and structurally characterized. With open metal sites and suitable pore space for

Atom numbers in magneto-optic traps with millimeter scale laser beams

February 22, 2013
Author(s)
Gregory W. Hoth, Elizabeth A. Donley, John E. Kitching
We measure the number of atoms, N, that can be trapped in a conventional vapor cell MOT using beams that have a diameter d in the range 1-5 mm. We show that the N \propto d 3.6 scaling law observed for larger MOTs is a robust approximation for optimized

Cavity-stabilized laser with acceleration sensitivity below 10 -12 /g -1

February 21, 2013
Author(s)
David R. Leibrandt, James C. Bergquist, Till P. Rosenband
We characterize the frequency-sensitivity of a cavity-stabilized laser to inertial forces and temperature fluctuations, and perform real-time feed-forward to correct for these sources of noise. We measure the sensitivity of the cavity to linear

Deleted File Recovery Tool Testing Results

February 21, 2013
Author(s)
James R. Lyle
The CFTT project at the National Institute of Standards and Technology develops methodologies for testing computer forensic tools. This presentation reports on tool behaviors observed while testing digital forensics tools against a set of file deletion

Using multi-zone modeling of particle transport to support building design

February 21, 2013
Author(s)
Dong H. Rim, Andrew K. Persily, Lance L. Wallace, William S. Dols, Steven J. Emmerich
As building design and operation changes to meet the goals of sustainability, it is critical to address indoor air quality issues such that indoor environmental conditions are maintained. Among the indoor air contaminants of concern in this context are

Quantitative measurements of glutathione in yeast cell lysate using 1H NMR

February 20, 2013
Author(s)
Steve Y. Rhieu, Aaron A. Urbas, Katrice Lippa, Vytas Reipa
A method for quantifying the level of glutathione (GSH) in yeast cell lysate is described using 1H NMR analysis. For quantification purposes, the 1H resonances corresponding to the Cys βCH2 of GSH were identified as having the fewest overlapping spectral

Fast standard addition method for LA-ICPMS using a spinning platform

February 19, 2013
Author(s)
John L. Molloy, Stephen E. Long, Fanny Claverie, Julian Malherbe, Naomi Bier
A method has been developed for the fast and easy determination of Pb, Sr, Ba, Ni, Cu, and Zn, which are of geological and environmental interest, in solid samples by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS) using a sample

New Version: Grasp2K Relativistic Atomic Structure Package

February 19, 2013
Author(s)
P. Jonsson, G. Gaigalas, J Bieron, Charlotte F. Fischer, I. P. Grant
A revised version of Grasp2K [P. Jonsson, X. He, C. Froese Fischer, and I.P. Grant, Comput. Phys. Commun. 177 (2007) 597] is presented. It supports earlier non-block and block versions of codes as well as a new block version in which the njgraf library

Radiation-suppressed superconducting quantum bit in a planar geometry

February 19, 2013
Author(s)
Martin O. Sandberg, Tomas A. Ohki, Jose A. Aumentado, Martin P. Weides, David P. Pappas
We present a superconducting transmon qubit circuit design based on large, coplanar capacitor plates and a microstrip resonator. The microstrip geometry, with the ground plane on the back, enhances access to the circuit for state preparation and

Polymer Membranes to Quarter-Wave Match Gaussian Optics

February 18, 2013
Author(s)
Jack T. Surek, Jason B. Coder, Joshua A. Gordon, David R. Novotny
We demonstrate that a simple quarter wave match designed for 110 GHz in WR10 waveguide reduces reflected power by a factor of ten at high density polyethylene (HDPE)-air interfaces. Polytetrafluoroethylene (PTFE)-based membranes that are expanded by

Effects of fiber gripping methods on the single fiber tensile test: I. Non parametric statistical analysis

February 15, 2013
Author(s)
Jae Hyun Kim, Nathanael A. Heckert, Stefan D. Leigh, Haruki Kobayashi, Walter G. McDonough, Kirk D. Rice, Gale A. Holmes
Single fiber tensile tests using two different gripping methods were carried out on various fiber lengths. One method (the glue-tab grip) consists of mounting a fiber onto a rigid tab as specified in ASTM C1557-03 using an adhesive, while the other (the

Evacuation Decision Model

February 15, 2013
Author(s)
Paul A. Reneke
In evacuation models, the time between the first alarm or other initial cue until the population starts evacuating, often referred to as the pre-evacuation time or pre-movement time, is usually a user defined input. To address this deficiency, this paper

Influence of Organic Liquids on the Nanostructure of Precipitated Cellulose

February 15, 2013
Author(s)
Brian J. Watson, Boualem Hammouda, Robert M. Briber, Steven W. Hutcheson
Cellulose (β-1,4 glucose) crystallinity poses a substantial physical and economic barrier to the enzymatic digestion of biomass to its constituent sugars. The crystallinity of cellulose is an inherent property due to its synthesis as microfibrils as plant

Review on Sustainability Characterization for Manufacturing Processes

February 15, 2013
Author(s)
Mahesh Mani, Jatinder Madan, Jae H. Lee, Kevin W. Lyons, Satyandra K. Gupta
Manufacturing industries lack the measurement science and the needed information base to measure and effectively compare environmental performances of manufacturing processes, resources and associated services with respect to sustainability. The current

Stable Field Emission from Nanoporous Silicon Carbide

February 15, 2013
Author(s)
Myung Gyu Kang, Henri Lezec, Fred Sharifi
A new method for fabrication of high current density field emitters based on nanoporous silicon carbide is presented. The emitters are monolithic structures which do not require high temperature gas phase synthesis and the process is compatible with

User's Guide for RM 8096 and 8097: The MEMS 5-in-1, 2013 Edition

February 15, 2013
Author(s)
Janet M. Cassard, Jon C. Geist, Theodore V. Vorburger, David T. Read, Michael Gaitan, David G. Seiler
The Microelectromechanical Systems (MEMS) 5-in-1 is a reference device sold as a NIST Reference Material (RM) that contains MEMS test structures on a test chip. The two RM chips (8096 and 8097) provide for both dimensional and material property
Displaying 21951 - 21975 of 73929
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