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Displaying 351 - 375 of 1911

Performance and Environmental Correction of a Low-Cost NDIR CO2 Sensor

July 3, 2017
Author(s)
Cory Martin, Ning Zeng, Anna Karion, Russell R. Dickerson, Xinrong Ren, Bari Turpie, Kristy Weber
Abstract. Non-dispersive infrared (NDIR) sensors are a low-cost way to observe carbon dioxide concentrations in ambient air, but their specified accuracy and precision are not sufficient for some scientific applications. An initial evaluation of six

Correlations for the Viscosity of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-Tetrafluoropropene (R1234ze(E))

September 20, 2016
Author(s)
Marcia L. Huber, Marc J. Assael
… from the triple point (220 K) to 410 K at pressures up to 30 MPa. The estimated uncertainty of this correlation at a 95 … level is 3.5 % for the liquid phase at pressures to 30 MPa and 3 % for the gas phase. The correlation for … correlation is 3.5 % for the liquid phase at pressures to 30 MPa and 3 % for the vapor phase. Comparisons with the …

Oersted Field Induced Magnetization Scissoring In Permalloy Bars

December 10, 2009
Author(s)
Lu Yuan, Fabio C. da Silva, Sean Halloran, Hamid Z. Fardi, David P. Pappas
We have systematically studied the magnetization behavior induced by the applied current in the permalloy (Ni81Fe19) bars using second and third harmonic analysis. Three types of sample were studied with layer structures of Al30/NiFe10, NiFe5/Al30/NiFe5

First far-infrared high resolution analysis of the n2 and n4 bands of phosgene 35Cl2CO and 35Cl37ClCO

October 27, 2017
Author(s)
Walter J. Lafferty, Jean-Marie Flaud, Fridolin Kwabia Tchana, Agnes Perrin, Laurent Manceron, Mustafa Ndao
… levels to within the experimental uncertainty i.e. ~0.30×10-3 cm-1. Very accurate rotational, centrifugal … the following band centers: ν0(ν2, 35Cl2CO) = 572.526299(30) cm-1, ν0(ν4, 35Cl2CO) = 582.089026(30) cm-1, ν0(ν2,35Cl37ClCO) = 568.951791 (35) cm-1 and ν0(ν4, …

Microwave Behavior of polymer bonded Iron oxide nanoparticles

November 1, 2012
Author(s)
Pavel Kabos, A Caprile, Coisson Marco, F Fiorillo, O M. Manu, E. S. Olivetti, M. A. Olariu, Pasquale Massimo, V. A. Scarlatache
… matrix were loaded with different fractions from 0 to 30% of Fe oxide magnetic nanoparticles with an average size … upon a very wide frequency range, spanning from DC to 30 GHz using different methods with overlapping frequency …

Agent/System Compatibility for Halon 1301 Aviation Replacement

October 20, 1993
Author(s)
Richard G. Gann, E Braun, Thomas G. Cleary, Richard H. Harris Jr., F Horkay, Gregory T. Linteris, G B. McKenna, Marc R. Nyden, Richard D. Peacock, Richard E. Ricker, Mark R. Stoudt, W. K. Waldron
… Replacement," will enable the selection by September 30, 1993 of 3 of the chemicals for full-scale testing by the … A final report will be delivered by September 30, 1995. …

Hydrophilic Interaction Liquid Chromatography at Subzero-Temperature for Hydrogen-Deuterium Exchange Mass Spectrometry

November 6, 2023
Author(s)
Kyle Anderson, Jeffrey W. Hudgens
… used reversed phase liquid chromatography (RPLC) at −30 °C, but high backpressures limited flow rates and required … configuration at subzero temperature. During operation at −30 °C, the HILIC column manifests greatly reduced … eluted from a HILIC column during a 40 min gradient at −30 °C contained ≈13% more deuterium than peptides eluted from …

Microwave Packaging for Voltage Standard Applications

June 3, 2009
Author(s)
Mike Elsbury, Charles J. Burroughs, Paul Dresselhaus, Zoya Popovic, Samuel Benz
Improvements to the packaging of Josephson Volt- age Standard (JVS) circuits have increased operating margins, reliability, and longevity of these systems. By using the "flip- chip-on-flex" technique, reliable chip and cryoprobe mounting have been

Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft

January 25, 2015
Author(s)
Ferran Gibert, Miquel Nofrarias, Nico Karnesis, Lluis Gesa, Victor Martin, Ignacio Mateos, Alberto Lobo, Reinhold Flatscher, Domenico Gerardi, Johannes Burkhardt, Ruediger Gerndt, David I. Robertson, Henry Ward, Paul McNamara, Felipe Guzman, Martin Hewitson, Ingo Diepholz, Jens Reiche, Gerhard Heinzel, Karsten Danzmann
… noise around 10^−4 K/rtHz in the frequency band 1-30 mHz. In addition, controlled injection of heat signals to … was found to be at 10−12 m Hz−1 2 , a factor of 30 below the measured noise at the lower end of the …
Displaying 351 - 375 of 1911
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