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Displaying 3726 - 3750 of 74638

Electron Impact Total Ionization Cross Sections of CF 4 , C 2 F^6^ and C 3 F^8^

October 12, 2021
Author(s)
H Nishimura, W M. Huo, Yong Sik Kim, M A. Ali
Both theoretical and experimental electron-impact total ionization cross sections of CF 4, C 2F 6 and C 3F 8 are presented. The experimental cross sections have been measured as a function of incident electron energy T from threshold to 3 keV. A parallel

Energy-Based Design Approach for Seismic Design: Energy Spectra

October 12, 2021
Author(s)
P Khashaee, B Mohraz, Fahim H. Sadek, Hai S. Lew, John L. Gross
Among the approaches that the Structural Engineers Association of California has recommended for performance based seismic design is the energy approach. In this approach, the earthquake input energy transmitted to the structure is estimated from ground

Enhanced Near-Field Raman Spectroscopy

October 12, 2021
Author(s)
C E. Dentinger, Stephan J. Stranick, Lee J. Richter, Richard R. Cavanagh
Near-field Raman spectroscopy can be used to obtain chemical specificity with the subwavelength spatial resolution of near-field scanning optical microscopy (NSOM). We report detailed measurements of near-field Raman spectra from a single crystal diamond

Entanglement Dynamics in 1D Quantum Cellular Automata

October 12, 2021
Author(s)
G K. Brennen, J E. Williams
Several proposed schemes for the physical realization of a quantum computer consist of qubits arranged in a cellular array. In the quantum circuit model of quantum computation, an often complex series of two-qubit gate operations is required between

Enthalpies of Formation of Dibutyl Phthalate and Methyl 4-Hydroxybenzoate

October 12, 2021
Author(s)
Yu V. Maksimuk, Kvetoslav Ruzicka, Vladimir Diky
Enthalpies of formulation of liquid dibutyl phthalate (DBP, -864.67+4.77 kJ*mol -1) and crystalline methyl 4-hydroxybenzoate (4-MHB, -562.20+2.29 kJ*mol -1) were determined by combustion calorimety. Relations of these values to the structures of the

Environmentally Enhanced Crack Growth in AlN

October 12, 2021
Author(s)
Roy W. Rice, C C. Wu, K R. McKinney, Stephen W. Freiman, L E. Dolhert, J H. Enloe
Three tests: (1) dynamic fatigue; (2) flexure strength, and (3) direct, double-cantilever beam stress intensity-crack velocity measurements carried out in air (22 C) and liquid nitrogen (-196 C) all showed that dense sintered AlN undergoes slow crack

Evaluation of Dental Restorative Composites Containing POSS-Methacrylate Monomers

October 12, 2021
Author(s)
H F. Fong, H Fong, Glenn M. Flaim, Sabine H. Dickens
We have combined confocal optical coherence (OCM) and confocal fluorescence (CFM) microscopies to gather simultaneous structural and functional information on tissue engineered products in a registered fashion. In this work, we present the design and

Evaluation of Microstructure of BaTiO 3 -Polymer Composites by Confocal Microscopy

October 12, 2021
Author(s)
C. K. Chiang, Li Piin Sung, R Popielarz, Jan Obrzut
Laser scanning confocal microscopy has been applied to examine the distribution of BaTiO3 particles in ceramic-polymer composite films. The thin-slice images of the thickness of the order of one micron allowed us to visualize the micron-size particles and

Excited Thomas-Efimov Levels in Ultracold Gases

October 12, 2021
Author(s)
M D. Lee, T Koehler, Paul S. Julienne
Since the early days of quantum physics, the complex behavior of three interacting particles has been the subject of numerous experimental and theoretical studies. In a recent Letter to Nature, Kraemer et al. [Nature (London) 440, 315 (2006)] report on

Exciton-Plasmon Interaction and Hybrid Excitons in Semiconductor-Metal Nanoparticle Assemblies

October 12, 2021
Author(s)
A O. Govorov, Garnett W. Bryant, Wei Zhang, T Skieni, J Lee, N A. Kotov, Joseph M. Slocik, Rajesh R. Naik
We describe physical properties of excitons in hybrid complexes composed of semiconductor and metal nanoparticles. The interaction between individual nanoparticles is revealed as an enhancement or suppression of emission. Enhanced emission comes from

Extended Abstract: Interfacial Scattering of Hot Electrons in Ultra-Thin Magnetic Films

October 12, 2021
Author(s)
R P. Lu, B A. Morgan, K L. Kavanagh, Cedric J. Powell, P J. Chen, F Serpa, William F. Egelhoff Jr.
In the emerging field of Spintronics the transport of hot electrons through magnetic thin films seems destined to play a key role. To help understand such transport, we have used ballistic electron emission microscopy (BEEM) to measure hot-electron

Extracellular and Intracellular Chorismate Mutases From Mycobacterium tuberculosis H 37 R v : Characterization of the Hypothetical Gene Products Rv1885c and Rv0948c

October 12, 2021
Author(s)
Sung Kim, Sathyavelu K. Reddy, G B. Vasquez, B C. Nelson, A M. Davis, S. Patterson, Prasad T. Reddy
Two ORFs Rv1885c and Rv0948c from the genome of Mycobacterium tuberculsosis H37Rv were identified as putative chorismate mutases. We reported earlier that Rv1885c is indeed a chorismate mutase (CM) with a 33 amino acid cleavable signal sequence in a

Extreme Anisotropy of Diffuse Interfaces in Crystals

October 12, 2021
Author(s)
N D. Alikakos, P W. Bates, John W. Cahn, P C. Fife, G Fusco, G B. Tanoglu
We investigate a model of anisotropic diffuse interfaces in ordered FCC crystals introduced recently by Braun et al, focussing on parametric conditions which give extreme anisotropy. For a reduced model, we prove existence and stability of plane wave

Feasibility Study of the Use of Frozen Human Sera in Split-Sample Comparison of Immunoassays With Reference Measurement Procedures for Total Thyroxine and Total Triiodothyronine Measurement

October 12, 2021
Author(s)
Linda M. Thienpont, Katleen Van Uytfanghe, J Marriot, Y Tokura, Lothar Siekmann, Anja Kessler, David M. Bunk, Susan Tai
Background: Diagnostic manufacturers must ensure/document metrologically traceable assays. Here we report on a feasibility study that investigated the use of a split-sample comparison with processed, frozen single-donation sera assigned with target values
Displaying 3726 - 3750 of 74638