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Displaying 20226 - 20250 of 73960

Calibrations for Millimeter-Wave Silicon Transistor Characterization

March 1, 2014
Author(s)
Dylan F. Williams, Phillip Corson, Sharma Jahnavi, Krishnaswamy Harish, Wei Tai, George Zacharias, Ricketts David, Watson Paul, Dacquay Eric, Voinigescu Sorin
This paper compares on-wafer thru-reflect-line (TRL) and off-wafer short-open-load-thru (SOLT) and line-reflect-reflect-match (LRRM) vector-network-analyzer probe-tip calibrations for amplifier characterization and parasitic-extraction calibrations for

Certification of Total Arsenic in Blood and Urine Standard Reference Materials by Radiochemical Neutron Activation Analysis and Inductively Coupled Plasma Mass Spectrometry

March 1, 2014
Author(s)
Rick L. Paul, William C. Davis, Karen E. Murphy, Colleen E. Bryan Sallee, Lee L. Yu, William F. Guthrie, Dennis D. Leber, Thomas W. Vetter
A newly developed procedure for determination of arsenic by radiochemical neutron activation analysis was used to measure arsenic in SRM 955c Toxic Elements in Caprine Blood and SRM 2668 Toxic Elements in Frozen Human Urine for the purpose of providing

Effects of nanoparticle size and charge on interactions with self-assembled collagen

March 1, 2014
Author(s)
Dongbo Wang, Jing (. Ye, Steven Hudson, Keana Scott, Sheng Lin-Gibson
Recent insights into bone formation have suggested that the critical first step to the biomineralization process is the integration of small (nanometer dimension) mineral clusters into collagen fibers. Such behavior is of intrinsic interest for the areas

Fire Characteristics of Steel Members Coated with Nano-Enhanced Polymers

March 1, 2014
Author(s)
Kathryn M. Butler, Alexander H. Cheng, Christopher Mullen, Ahmed Al-Ostaz
Applying a polymeric coating on steel members has been demonstrated to be an effective countermeasure for the threat of blast on building and other structures. The development of a blast-resistant coating for steel with good characteristics in a fire would

Power Supply Issues for Wireless Sensor Networks: A Review

March 1, 2014
Author(s)
Wenqi Guo, William M. Healy, Mengchu Zhou
Wireless sensor networks (WSNs) have enabled numerous embedded wireless applications in different areas such as military/battlefield, environmental monitoring, and intelligent building systems. They consist of a large number of nodes that need to operate

Precision high-value resistance scaling with a two-terminal cryogenic current comparator

March 1, 2014
Author(s)
Randolph E. Elmquist, George R. Jones, Felipe L. Hernandez-Marquez, Marcos Bierzychudek
We describe a cryogenic two-terminal high-resistance bridge and its application in precision resistance scaling from the quantized Hall resistance (QHR) at RH = RK/2 = 12 906.4035 _ to decade resistance standards with values between 1 M_ and 1 G_. The

ASME International Steam Tables for Industrial Use, Third Edition

February 28, 2014
Author(s)
Allan H. Harvey, William T. Parry, James C. Bellows, John S. Gallagher, Richard D. Harwood
This is an update of the standard ASME "Steam Tables" book, giving tables and charts of thermodynamic and transport properties for water and steam, along with background text describing the tables and calculations. The main change from the previous (2nd)

Capabilities of Single Particle Inductively Coupled Plasma Mass Spectrometry for the Size Measurement of Nanoparticles: A Case Study on Gold Nanoparticles

February 28, 2014
Author(s)
Jingyu Liu, Karen E. Murphy, Robert I. MacCuspie, Michael R. Winchester
The increasing application of engineered nanomaterials in consumer and medical products has motivated the development of single particle inductively coupled plasma mass spectrometry (spICP-MS) for characterizing nanomaterials under realistic environmental

Hydrodynamic Behavior of Carbon Nanotubes and Characterization of Length Distributions

February 28, 2014
Author(s)
Carlos A. Silvera Batista, Ming Zheng, Constantine Y. Khripin, Xiaomin X. Tu, Jeffrey Fagan
The sedimentation behavior of SWCNTs was studied through analytical ultracentrifugation. SWCNTs were dispersed with the aid of surfactants, doubly sorted by density and length to produce samples with invariant diameter distributions and aspect ratios that

Methods for improving visibility measurement standards of powered industrial vehicles

February 28, 2014
Author(s)
Roger V. Bostelman, Jochen Teizer, Soumitry J. Ray, Mike Agronin, Dominic Albanese
Poor visibility of powered industrial vehicles, such as forklifts, used in industry is often the cause of accidents that include pedestrians. Current standards allow up to 20% non-visible regions for forklifts where measurement of these regions is

Trust Issues with Opportunistic Encryption

February 28, 2014
Author(s)
Scott W. Rose
Recent revelations have shed light on the scale of eavesdropping on Internet traffic; violating the privacy of almost every Internet user. In response, protocol designers, engineers and service operators have begun deploying encryption (often opportunistic

Characterization of InGaN quantum disks in GaN nanowires

February 27, 2014
Author(s)
Alexana Roshko, Roy H. Geiss, John B. Schlager, Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Todd E. Harvey
Catalyst-free GaN nanowires with InGaN quantum disks (QDs) were characterized by scanning/transmission electron microscopy (S/TEM) and photoluminescence. A variety of structures, from QDs with large strain fields to apparently strain free QDs were observed

Engineering Plant Cell Walls: Tuning Lignin Monomer Composition for Deconstructable Biofuels Feedstocks or Resilient Biomaterials

February 27, 2014
Author(s)
Peter Ciesielski, Michael Resch, Barron Hewetson, Jason Killgore, Alexandra Curtin, Nick Anderson, Ann Chiaramonti Debay, Donna C. Hurley, Aric Sanders, Michael Himmel, Clint Chapple, Nathan Mosier, Bryon Donohoe
Advances in genetic manipulation of the biopolymers that compose plant cell walls will facilitate more efficient production of biofuels and chemicals from biomass and lead to specialized biomaterials with tailored properties. Here we investigate several

Fundamental Equation of State for Deuterium

February 27, 2014
Author(s)
Ian A. Richardson, Jacob W. Leachman, Eric Lemmon
World utilization of deuterium is anticipated to increase with the rise of fusion energy machines such as ITER and NIF. We present a new fundamental equation of state for the thermodynamic properties of fluid deuterium. Differences between thermodynamic
Displaying 20226 - 20250 of 73960
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