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NIST Authors in Bold

Displaying 22876 - 22900 of 73741

Effect of Tin Doping on alpha-Fe2O3 Photoanodes for Water Splitting

June 28, 2012
Author(s)
Christopher C. Bohn, Amit Agrawal, Erich C. Walter, Mark D. Vaudin, Andrew Herzing, Paul M. Haney, Albert A. Talin, Veronika Szalai
Sputtered-deposited films of α-Fe2O3 of thickness 600 nm were investigated as photoanodes for solar water splitting and found to have photocurrents as high as 0.8 mA/cm2 at 1.23 V vs. the reversible hydrogen electrode (RHE). The incorporation of Sn into

Next Generation Packaging, Kitting, and Palletizing: Can one robot do it all?

June 28, 2012
Author(s)
Rajmohan (. Madhavan, Stephen B. Balakirsky, Craig I. Schlenoff
A seminar titled "Next Generation Packaging, Kitting, and Palletizing: Can one robot do it all?" was held on February 9th 2012 at the Material Handling Industry of America (MHIA) MODEX show in Atlanta, GA. The seminar primarily focused on whether systems

Safe Control of Manufacturing Vehicles Research Towards Standard Test Methods

June 28, 2012
Author(s)
Roger V. Bostelman, William P. Shackleford, Geraldine S. Cheok, Kamel S. Saidi
The National Institute of Standards and Technology's Intelligent Systems Division has been researching several areas leading to safe control of manufacturing vehicles to improve AGV safety standards. The research areas include: - Automated guided vehicle

Usability of PIV Smartcards for Logical Access

June 28, 2012
Author(s)
Emile L. Morse, Mary F. Theofanos, Yee-Yin Choong, Celeste Paul, Aiping L. Zhang, Hannah Wald
This paper presents the findings of a PIV usability pilot study conducted at NIST during the summer of 2010. The study focused on factors that affected users' perceptions and adoption of PIV smartcards. Based on observation of the study participants, the

VOC emissions from a LIFE reference: small chamber tests and factorial studies

June 28, 2012
Author(s)
Wenjuan Wei, Sylvester M. Greer, Cynthia H. Reed, Andrew K. Persily, Yinping Zhang
A liquid-inner tube diffusion-film-emission (LIFE) reference was developed to quickly evaluate the performance of a chamber system for furniture/building material VOC emission tests. The reference has a constant emission rate determined by an analytical

THE ROLE OF TOOTH ENAMEL MECHANICAL PROPERTIES IN PRIMATE DIETARY ADAPTATION

June 27, 2012
Author(s)
Paul Constantino, James J. Lee, Yvonne Gerbig, Adam Hartstone-Rose, Mauricio Talebi, Brian R. Lawn, Peter Lucas
Primate teeth adapt to the physical properties of foods in a variety of ways including changes in occlusal morphology, enamel thickness, and overall size. We conducted a comparative study of extant primates to examine whether their teeth also adapt to

Thermodynamic Properties of o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene

June 27, 2012
Author(s)
Eric W. Lemmon, Yong Zhou, Jiangtao Wu
Equations of state for the xylene isomers (o-xylene, m-xylene, and p-xylene) and ethylbenzene have been developed with the use of the Helmholtz energy as the fundamental property with independent variables of density and temperature. The general

Protein Particles: What We Know and What We Dont Know

June 26, 2012
Author(s)
Dean C. Ripple, Mariana Dimitrova
All therapeutic protein products contain particles formed by the aggregation of protein monomers. There is a growing interest in the understanding of particles in biopharmaceutical products, which has been fostered on the one hand by significant

Combinatorial Testing

June 25, 2012
Author(s)
David R. Kuhn, Raghu N. Kacker, Yu Lei
Combinatorial testing is a method that can reduce cost and improve test effectiveness significantly for many applications. The key insight underlying this form of testing is that not every parameter contributes to every failure, and empirical data suggest

Etch induced microwave losses in titanium nitride superconducting resonators

June 25, 2012
Author(s)
Martin O. Sandberg, Jeffrey S. Kline, Martin P. Weides, David S. Wisbey, David P. Pappas
We have investigated the correlation between the microwave loss and patterning method for coplanar waveguide titanium nitride resonators fabricated on silicon wafers. Three different methods were investigated: fluorine- and chlorine-based reactive ion

Compressed-liquid densities of two highly polar + non-polar binary systems

June 24, 2012
Author(s)
Stephanie L. Outcalt, Arno R. Laesecke
The binary systems ethanol + 2,2,4-trimethylpentane and 2-butanol + 2,2,4-trimethylpentane were studied as models for blends of gasoline with biofuels. Their densities were measured with a vibrating-tube densimeter at compressed-liquid states of three

RESONANCE ENERGY TRANSFER AS A TOOL FOR PROBING INTERFACE FORMATION IN NANOCOMPOSITES

June 24, 2012
Author(s)
Mauro Zammarano, Edward D. McCarthy, Douglas M. Fox, Paul H. Maupin, Li Piin Sung, Yeon S. Kim
One of the most enduring problems in the evolution of science and technology using nanoscale materials is the characterization of their morphology in macroscopic systems.1 This involves spatial and orientation distribution, which may be multimodal and

Solid-Phase Synthesis of Ammonium Ionenes

June 24, 2012
Author(s)
Matthew T. Hunley, Kathryn L. Beers
Ionenes are polyelectrolytes with the charge along the polymer backbone. These polymers possess a precisely-defined charge density, making them ideal as physical crosslinkers for high performance elastomers as well as gene transfection agents. However

Synthesis and characterization of model crosslinked polyamide films for water purification

June 24, 2012
Author(s)
Peter M. Johnson, Edwin Chan, Jun Y. Chung, Junghyun Lee, Christopher Stafford
Reverse osmosis (RO) and nanofiltration (NF) membranes are comprised of a dense active layer supported by a porous support. Commercial active layer are highly crosslinked polyamides that are formed through interfacial polymerization directly on the support

Metal-Assisted Hydrogen Storage on Pt-Decorated Single-Walled Carbon Nanohorns

June 23, 2012
Author(s)
Yun Liu, Craig M. Brown, Dan A. Neumann, David B. Geohegan, Alexander A. Puretzky, Christopher M. Rouleau, Hui Hu, David Styers-Barnett, Pavel O. Krasnov, Boris I. Yakobson
Current methods to study the spillover effect in hydrogen storage materials typically must compare the results from a separate reference sample. This makes it difficult to determine with confidence the amount of adsorbed hydrogen only associated with

13C - NMR Absorptions of Major Functional Groups

June 22, 2012
Author(s)
Thomas J. Bruno, Paris D. Svoronos
The table below lists the 13C chemical shift ranges (in ppm) with the corresponding functional groups in descending order. A number of typical simple compounds for every family are given to illustrate the corresponding range. The shifts for the carbons of

15 N - NMR Chemical Shifts of Major Chemical Families

June 22, 2012
Author(s)
Thomas J. Bruno, Paris D. Svoronos
The following table contains 15N NMR chemical shifts of various organic nitrogen compounds. Chemical shifts are expressed relative to different standards (NH 3, NH 4Cl, CH 3NO 2, NH 4NO 3, HNO 3, etc.) and are interconvertible. Chemical shifts are

Analytical Standardization and Calibration

June 22, 2012
Author(s)
Thomas J. Bruno
Most modern instrumental techniques used in analytical chemistry produce an output or signal that is not absolute; the signal or peak is not a direct quantitative measure of concentration or target analyte quantity. Thus, to perform quantitative analysis

Atomic Masses and Abundances

June 22, 2012
Author(s)
Thomas J. Bruno, Paris D. Svoronos
The following table lists the atomic masses and relative percent concentrations of naturally occurring isotopes of importance in mass spectroscopy.
Displaying 22876 - 22900 of 73741
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