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Displaying 8026 - 8050 of 74178

Mass spectrometry enumeration of filamentous M13 bacteriophage

July 2, 2019
Author(s)
Tingting Wang, Ai Nguyen, Linwen Zhang, Illarion Turko
In the last decade, filamentous M13 bacteriophage has emerged into numerous biotechnological applications as a promising nontoxic and self-assembling biomaterial with specific binding properties. This raises a question about its upscale production that

Molecular Calculation of the Critical Parameters of Classical Helium

July 2, 2019
Author(s)
Richard A. Messerly, Navneeth Gokul, Andrew J. Schultz, David A. Kofke, Allan H. Harvey
We compute the vapor-liquid critical coordinates of a model of helium in which nuclear quantum effects are absent. We employ highly accurate ab initio pair and three-body potentials and calculate the critical parameters rigorously in two ways. First, we

Proceedings of the 10th Model-Based Enterprise Summit (MBE 2019)

July 2, 2019
Author(s)
Thomas D. Hedberg Jr., Mark G. Carlisle
The National Institute of Standards and Technology (NIST) hosted the tenth installment of the Model-Based Enterprise Summit (MBE 2019) on April 2-4, 2019 in Gaithersburg, Maryland. The MBE Summit grew 114 percent over the past five MBE Summits. This

62.5-GHz Phased-Array Channel Sounder for Double-Directional Angle Estimation

July 1, 2019
Author(s)
Peter B. Papazian, Derek Caudill, Camillo Gentile, Jack Chuang, Nada T. Golmie
The paper describes implementation of phased array antennas for use in a wideband channel sounding system. The antennas are 62.5 GHz prototypes, utilizing SiGe chips on a printed circuit-board. Each board consists of two 16-element series-fed patch array

Anisotropic Spin Fluctuations in Detwinned FeSe

July 1, 2019
Author(s)
Tong Chen, Youzhe Chen, Andreas Kreisel, Xingye Lu, Astrid Schneidewind, Yiming Qiu, J. T. Park, Toby G. Perring, J. Ross Stewart, Huibo Cao, Rui Zhang, Yu Li, Yan Rong, Yuan Wei, Brian M. Andersen, P. J. Hirschfeld, Collin L. Broholm, Pengcheng Dai
Superconductivity in iron selenide (FeSe) emerges from a nematic phase that breaks four-fold rotational symmetry in the iron plane [Fig. 1(a)] [1-4]. Although this phase in FeSe is established below a tetragonal-to-orthorhombic transition temperature Τ s

Blown away: Citicorp Center Tower repairs revisited

July 1, 2019
Author(s)
Dat Duthinh
Using Database-Assisted Design and the Tokyo Polytechnic University Aerodynamic Database, we show that face winds put more structural demand than corner winds do on the Citicorp Tower in Manhattan. This 59-story building, supported by four midside columns

Constrained Least-Squares Fitting for Tolerancing and Metrology

July 1, 2019
Author(s)
Craig M. Shakarji, Vijay Srinivasan
Recent years have seen a remarkable emergence of a particular type of least-squares fitting, called constrained least-squares fitting, in national and international standards on tolerancing and metrology. Fitting, which is called an association operation

Disordered Heterogeneous Materials

July 1, 2019
Author(s)
Andrew J. Allen
This chapter describes the use of diffraction-based methods to characterize amorphous or disordered heterogeneous materials. Quantitative materials microstructure characterization using small-angle scattering methods is emphasized. While these techniques

Energy Balance in Medium-Scale Methanol, Ethanol, and Acetone Pool Fires

July 1, 2019
Author(s)
Sung C. Kim, Ki Y. Lee, Anthony Hamins
Several series of measurements were made to characterize medium-scale pool fires steadily burning in a well-ventilated, quiescent, open environment. Time-averaged local measurements of radiative and total heat flux were made in steadily burning methyl

Nuclear Spin Incoherent Neutron Scattering from Quantum Well Resonators

July 1, 2019
Author(s)
Max Wolff, Anton Devishvili, Joseph Dura, Franz A. Adlmann, Brian Kitchen, Gunnar K. Palsson, Heikki Palonen, Brian B. Maranville, Charles Majkrzak, Boris P. Toperverg
We report the detection and quantification of nuclear spin incoherent scattering from hydrogen occupying interstitial sites in a thin film of vanadium. The neutron wave field is enhanced in a quantum resonator with magnetically switchable iron boundaries
Displaying 8026 - 8050 of 74178