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Displaying 4226 - 4250 of 4261

Non-Contact Determination of Free Carrier Concentration in n-GaInAsSb

January 1, 2004

Author(s)

James E. Maslar, Wilbur S. Hurst, C Wang, D A. Shiau

… in the range 2 to 80 x 1017 cm-3, as measured by secondary ion mass spectrometry. For a particular nominal doping level, …

Dechlorination of Polychlorinated Biphenyls in Industrial Transformer Oil by Radiolytic and Photolytic Methods

December 1, 2003

Author(s)

C G. Jones, Joseph Silverman, M I. Al-Sheikhly, Pedatsur Neta, Dianne L. Poster

Used electrical transformer oils containing low (nearly equal to} 95 g g -1) or high (>800,000 g g -1) concentrations of polychlorinated biphenyls (PCBs) were treated using electron, gamma, and ultraviolet radiation and the efficiency of dechlorination by

A Dual Constant-Composition Titration System as In Vitro Resorption Model for Comparing Dissolution Rates of Calcium Phosphate Biomaterials

May 1, 2003

Author(s)

Laurence C. Chow, Milenko Markovic, Shozo Takagi

… = 1.2 mmol/l; [KCl] = 133 mmol/l) and a pH of 3.0. A Ca ion-specific electrode and a pH electrode were used to …

Crystal Structure of the Escherichia Coli YcdX Protein Reveals a Trinuclear Zinc Active Site

May 1, 2003

Author(s)

A Teplyakov, G Obmolova, P P. Khil, A J. Howard, R D. Camerini-Otero, G L. Gilliland

… histidine and aspartate residues implicated in metal ion coordination. As part of DNA polymerases, the PHP domain …

Structure of Escherichia Coli Aminodeoxychorismate Synthase: Architectural Conservation and Diversity in Chorismate-Utilizing Enzymes

February 1, 2002

Author(s)

J F. Parsons, P Y. Jensen, A S. Pachikara, A J. Howard, Edward Eisenstein, Jane E. Ladner

… crystals, and the location of an adventitious formate ion, suggest that conformational changes in loop regions …

Fire Detector Performance Predictions in a Simulated Multi-Room Configurtion (NIST SP 965)

February 1, 2001

Author(s)

Thomas G. Cleary, Michelle K. Donnelly, George W. Mulholland, B Farouk

… at each detector location. An analog output photo-ion-thermal multi-sensor detector was placed in the test …

Dental Resin Composites Containing Ceramic Whiskers and Precured Glass Ionomer Particles

September 1, 2000

Author(s)

H H. Xu, F Eichmiller, Joseph M. Antonucci, Gary E. Schumacher, L K. Ives

… strength, modulus, and work-of-fracture. A fluoride ion-selective electrode was used to measure fluoride release. …

Ab Initio Structures of Metalloenzyme Active Sites: Applications to Metalloglutathione Transferase

January 1, 2000

Author(s)

Morris Krauss

A possible structure of the active site of a new metalloenzyme family, metalloglutathione transferase (MGT), is deduced from ab initio calculations suggested by the structures of related enzymes, extradiol dioxygenase and glyoxalase I. The active site of

Anisotropic chemical bonding of lanthanide-OH molecules

July 1, 2025

Author(s)

Jacek Klos, Eite Tiesinga, Lan Cheng, Svetlana Kotochigova

… are closely related to that of the corresponding atomic ion in an excited electronic state. From the polynomial …

Everything falls apart: How solids degrade and release nanomaterials, composite fragments, and microplastics

May 15, 2024

Author(s)

Wendel Wohlleben, Nathan Bossa, Denise Mitrano, Keana C. K. Scott

To ensure the safe use of materials, one must assess the identity and quantity of exposure. Solid materials, such as plastics, metals, coatings and cements, degrade to some extent in their life cycle, and releases can occur during manufacturing, use and

Laser-assisted atom probe tomography of c-plane and m-plane InGaN test structures

April 29, 2022

Author(s)

Norman A. Sanford, Paul T. Blanchard, Alexana Roshko, Ashwin Rishinaramangalam, Daniel Feezell, Albert Davydov

… sample types showed depth-dependent variations in absolute ion counts that depended upon ROI placement. …

EFFECT OF FLUID PROPERTIES ON CONTACT ANGLES IN THE EAGLE FORD SHALE MEASURED WITH SPONTANEOUS IMBIBITION

November 19, 2021

Author(s)

Joanna McFarlane, Victoria H. DiStefano, Philip R. Bingham, Hassina Z. Bilheux, Michael C. Cheshire, Richard E. Hale, Daniel Hussey, David Jacobson, Lindsay M. Kolbus, Jacob LaManna, Edmund Perfect, Mark Rivers, Louis J. Santodonato, Lawrence M. Anovitz

… bicarbonate uptakes, which suggested that the bicarbonate ion prevented the hydration of the shale minerals. This study …

Incomplete reactions in nanothermite composites

February 3, 2017

Author(s)

Rohit J. Jacob, Diana Ortiz-Montalvo, Kyle R. Overdeep, Timothy P. Weihs, Michael R. Zachariah

… quantitatively analyzed using electron microscopy, Focused Ion Beam cross-sectioning followed by Energy Dispersive X-ray …

CCQM Pilot Study P-140; Quantitative Surface Analysis of Multi-Element Alloy Films

October 1, 2015

Author(s)

David S. Simons, Christopher W. Szakal, William A. Osborn, Kyung Joong Kim

… films were measured by various methods, such as Secondary Ion Mass Spectrometry (SIMS), Auger Electron Spectroscopy …

Salivary Fluoride From Fluoride Dentifrices or Rinses After Use of a Calcium Pre-Rinse or Calcium Dentifrice

May 1, 2006

Author(s)

Gerald L. Vogel, David Shim, Gary E. Schumacher, Clifton M. Carey, Laurence C. Chow, Shozo Takagi

… primarily responsible for the cariostatic effect of this ion, appears to be maintained by the release of fluoride from …

X-Ray Porosimetry: A New Method for the Characterizaton of Porous Low-Dielectric-Constant Thin Films Adaptable for the Semiconductor Industry

March 1, 2003

Author(s)

Christopher L. Soles, Barry J. Bauer, Wen-Li Wu

… reflectivity (XR), smallangle neutron scattering, and ion scattering. However,these measurements require …

DNA Electrophoresis in Gellan Gels. The Effect of Electroosmosis and Polymer Additives

March 7, 2002

Author(s)

M. Markstrom, Kenneth D. Cole, B. Akerman

… The polysacharide gellan forms hydrogels if a divalent ion such as calcium is added at millimolar concentrations. …

Direct measurement of the 3P0 clock state natural lifetime in 87Sr

August 24, 2025

Author(s)

Kyle Beloy, Jonathan Dolde, Dhruva Ganapathy, Xin Zheng, Shuo Ma, Shimon Kolkowitz

Optical lattice clocks based on the narrow transition between (5s2)1S0 -(5s5p)3P0 levels in neutral strontium (Sr) are among the most precise and accurate measurement devices in existence. Although this transition is completely forbidden by selection rules

An Electrically Conducting Metal-Organic Framework Having Two Orthogonal Transport Pathways

December 12, 2024

Author(s)

Shiyu Zhang, Weikang Zhang, Ashok Yadav, Md. Ansari, Jonathan Cromer, Jorge Moreno, Gavin McCarver, Wei Zhou, Sourav Saha

Owing to their diverse potential applications in electronics and energy technologies, electrically conducting metal–organic frameworks (EC-MOFs) have emerged as one of the most coveted functional materials of the twenty-first century. Among various MOF

DNA-directed nanofabrication of high-performance carbon nanotube field-effect transistors

May 22, 2020

Author(s)

Ming Zheng, Jeffrey A. Fagan, Jason K. Streit, Mengyu Zhao, Yahong Chen, Kexin Wang, Zhi Zhu, Wei Sun

Scaling the channel pitch of field-effect transistors (FETs) is one prerequisite towards future ultra-scaled technology nodes. While lithography has been the foundational tool during the scaling of bulk materials, bio- fabrication is promising for

Candidate Reference Measurement Procedure for the Determination of 24R,25-Dihydroxyvitamin D3 in Human Serum using Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry

July 14, 2015

Author(s)

Susan Tai, Michael A. Nelson

… pressure chemical ionization (APCI) in the positive ion mode and multiple reaction monitoring (MRM) were used for …

Clearing the fog for best in the world air-wavelength

July 1, 2015

Author(s)

Patrick F. Egan, Jack A. Stone Jr.

… positions to change (even though the coatings were ion-beam sputter), and we present evidence which supports …

Composition and Carrier Concentration Dependence of the Electronic Structure of InyGa1-yAs1-xNx Films With Nitrogen Mole Fraction Less Than 0.012

November 1, 2005

Author(s)

Youn S. Kang, Lawrence H. Robins, Anthony Birdwell, Alexander J. Shapiro, W. R. Thurber, Mark D. Vaudin, M M. Fahmi, D Bryson, S N. Mohammad

… x=0.0014 and x=0.012, measured indirectly by asecondary-ion-mass spectrometry calibration; indium mole fraction …

Measurement of 8-Hydroxy-2'-Deoxyadenosine In DNA by Liquid Chromatography/Mass Spectrometry

August 1, 2001

Author(s)

Pawel Jaruga, H Rodriguez, M Miral Dizdar

… 8-OH-dAdo. The level of sensitivity of LC/MS with selected-ion monitoring (SIM) for 8-OH-dAdo amounted to approximately …

Correlating the Diffusion of Water in Model Polyamides with Controlled Crosslink Densities to the Performance in Reverse Osmosis Membranes for Desalination

April 18, 2023

Author(s)

Velencia Witherspoon, Kanae Ito, Chad R. Snyder, Madhusudan (Madhu) Tyagi, Tyler Martin, Peter Beaucage, Ryan Nieuwendaal, Richard Vallery, David Gidley, Jeffrey Wilbur, Dean Welsh, Christopher Stafford, Christopher Soles

… of water diffusing through both rigid porous silicates and ion exchange membranes, revealing robust design cues for …

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