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Displaying 426 - 450 of 1005

The Impact of Outdoor Air Ventilation in School Corridors

April 1, 2024
Author(s)
Lisa Ng, Diane Mills
… There were about 55.4 million students enrolled in U.S. elementary and secondary … and 739 million primary students [2], representing over 17 % of our global population [3]. In the United States, students spend on average 6.64 hours in school [4], making the need for improved indoor air quality (IAQ) in …

3D printed optical concentrators for LED arrays

July 19, 2020
Author(s)
Behrang H. Hamadani, Jonathan E. Seppala, Clarence J. Zarobila
… Our results demonstrate that realizing an intensity of 17 kW/m2 or more with a spatial irradiance nonuniformity of …

The Characteristics of a 1 m Methanol Pool Fire

May 4, 2020
Author(s)
Kunhyuk Sung, Jian Chen, Matthew Bundy, Anthony Hamins
… rate was measured by monitoring the mass loss in the 17 methanol reservoir feeding the liquid pool. The heat …

Frequency-comb spectroscopy on pure quantum states of a single molecular ion

March 27, 2020
Author(s)
Chin-wen Chou, Alejandra L. Collopy, Christoph Kurz, Yiheng Lin, Michael E. Harding, Philipp N. Plessow, Tara M. Fortier, Scott A. Diddams, Dietrich G. Leibfried, David R. Leibrandt
Spectroscopy is a powerful tool for studying molecular properties and is commonly performed on large thermal ensembles of molecules that are perturbed by motional shifts and interactions with the environment and one another, resulting in convoluted spectra

A Novel Low Loss and Lightweight Magnetic Material for Electrical Machinery

February 10, 2020
Author(s)
Michael J. Donahue, Farzad Ahmadi, Yilmaz Sozer, Igor Tsukerman
A new low loss and light weight core material, with applications in electrical machinery, is made of highly packed and insulated magnetic microwires (MWs). These MWs are aligned in such a way as to guide the flux in rotor/stator, with the ultimate goal of

Accelerated Bottom-up Gold Filling of Trenches

July 12, 2019
Author(s)
Daniel Josell, Maureen E. Williams, Stephen J. Ambrozik, Chen Zhang, Thomas P. Moffat
… concentrations of Bi. Bottom-up electrodeposition in 17 m and 45 m tall trenches is demonstrated using either …

Standoff passive video imaging at 350 GHz with 251 superconducting detectors

June 20, 2014
Author(s)
Daniel T. Becker, James A. Beall, Hsiao-Mei Cho, Gene C. Hilton, Nicholas G. Paulter Jr., Carl D. Reintsema, Robert E. Schwall, Cale Gentry, Ilya Smirnov, Peter Ade, W D. Duncan, Mark Halpern, Carole Tucker
… distance of 16 m to 28 m with a spatial resolution of 1.4 cm (at 17 m). It currently contains one 251-detector subarray, and …

Flat Frequency Response in the Electronic Measurement of the Boltzmann Constant

June 1, 2013
Author(s)
Jifeng Qu, Horst Rogalla, Yang Fu, Jianqiang Zhang, Alessio Pollarolo, Samuel Benz
A new quantum voltage calibrated Johnson noise thermometer (JNT) was developed at NIM to demonstrate the electrical approach that determines the Boltzmann constant k by comparing electrical and thermal noise power. A measurement with an integration period

A Channel Propagation Model for the 700 MHz Band

September 1, 2010
Author(s)
Camillo A. Gentile, Nada T. Golmie, Catherine A. Remley, Christopher L. Holloway, William F. Young
… The stochastic impulse response model is complete with 17 parameters which enables reconstruction for use in …

Hyper-Ramsey spectroscopy of optical clock transitions

July 22, 2010
Author(s)
Christopher W. Oates, V. I. Yudin, A. V. Taichenachev, Zeb Barber, Nathan D. Lemke, Andrew D. Ludlow, U Sterr, Ch. Lisdat, F Riehle
… be suppressed considerably below a fractional leel of 10 -17 . Moreover, our approach opens the door for high-precision …
Displaying 426 - 450 of 1005
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