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Displaying 4126 - 4150 of 9856

Evaluation of Low-Contrast Detectability of Iterative Reconstruction across Multiple Institutions, CT Scanner Manufacturers, and Radiation Exposure Levels

February 19, 2015
Author(s)
Adele P. Peskin, Ganesh Saiprasad, James J. Filliben, Alden A. Dima
Purpose: To evaluate the impact of Iterative Reconstruction (IR) compared with Filtered Back Projection (FBP) using low-contrast objects in phantom images across vendors and exposure levels. Materials and Methods: Randomized repeat scans of the Gammex 464

Keeping Your Site Comfortably Secure: An Introduction to Internet Firewalls

December 1, 1994
Author(s)
John P. Wack, Lisa J. Carnahan
This document provides an overview of the Internet and security-related problems. It then provides an overview of firewall components and the general reasoning behind firewall usage. Several types of network access policies are described, as well as

High-Field Magnetization and Magnetic Phase Diagram of a-Cu 2 V 2 O 7

June 16, 2017
Author(s)
G. Gitgeatpong, M. Suewattana, Shiwei Zhang, A. Miyake, M. Tokunaga, P. Chanlert, N. Kurita, H. Tanaka, T. J. Sato, Yang Zhao, K. Matan
High-field magnetization of the spin-1/2 antiferromagnet α-Cu 2V 2O 7 was measured in pulsed magnetic fields of up to 56 T in order to study its magnetic phase diagram. When the field was applied along the easy axis (the a-axis), two distinct transitions

Competition Between N-H and N-D Bond Cleavage in the Photodissociation of NH 2 D and ND 2 H

November 1, 2000
Author(s)
J P. Reid, R A. Loomis, S R. Leone
… different geometries during the bond-cleavage. A larger quantum yield for producing ND 2 ( , υ 2 ' = O) from the … atoms through the barrier to dissociation. Similarly, the quantum yield for producing the NH 2 ( , υ 2 ' = 0) fragment … N-D bond is cleaved in the photodissociation of ND 3 . The quantum yield for producing NHD( ) is larger for cleavage of …

Development of a Topological-Insulator-Based Quantum Resistance Standard

September 2, 2024
Author(s)
Ngoc Thanh Mai Tran, Linsey Rodenbach, Jason Underwood, Alireza Panna, Zachary Barcikowski, Molly Andersen, Peng Zhang, Lixuan Tai, Kang Wang, Rand Elmquist, Dean G. Jarrett, David B. Newell, David Goldhaber-Gordon, Albert Rigosi
… Development of a Topological-Insulator-Based Quantum Resistance Standard …

Observation of Domain Wall Confinement and Dynamics in a Quantum Simulator

March 18, 2021
Author(s)
Wen Lin Tan, Patrick Becker, Guido Pagano, Kate Collins, Arinjoy De, L. Feng, Harvey Kaplan, Antonis Kyprianidis, Rex Lundgren, W. Morong, Seth P. Whitsitt, Alexey Gorshkov, Christopher Monroe
… Observation of Domain Wall Confinement and Dynamics in a Quantum Simulator …
Displaying 4126 - 4150 of 9856
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