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Displaying 6901 - 6925 of 73721

Association between Gestational Phthalate Exposure and Newborn Head Circumference; Impacts by Race and Sex

January 29, 2021
Author(s)
Michael S. Bloom, E. Valachovic, Thoin Begum, Rebecca J. Wineland, Abby G. Wenzel, John W. Brock, Elizabeth R. Unal, Lori Cruze, Roger B. Newman, John Kucklick
Abstract Observational and experimental studies report associations between gestational phthalate exposure and fetal development, yet few data exist to characterize phthalate effects on head circumference (HC) or to estimate the impact of race or sex. To

Electro-optic frequency combs for rapid interrogation in cavity optomechanics

January 29, 2021
Author(s)
David Long, Benjamin J. Reschovsky, Feng Zhou, Yiliang Bao, Thomas W. LeBrun, Jason Gorman
Electro-optic frequency combs were employed to rapidly interrogate an optomechanical sensor, demonstrating spectral resolution substantially exceeding that possible with a mode-locked frequency comb. Frequency combs were generated using an integrated

Magneto-optical trapping using planar optics

January 29, 2021
Author(s)
William McGehee, Wenqi Zhu, Daniel Barker, Daron Westly, Alexander Yulaev, Nikolai Klimov, Amit Agrawal, Stephen Eckel, Vladimir Aksyuk, Jabez McClelland
Laser-cooled atoms are a key component of many calibration-free measurement platforms— including clocks, gyroscopes, and gravimeters—and are a promising technology for quantum networking and quantum computing. The optics and vacuum hardware required to

Microwaves in Quantum Computing

January 29, 2021
Author(s)
Joseph C. Bardin, Daniel Slichter, David J. Reilly
The growing field of quantum computing relies on a broad range of microwave technologies, and has spurred development of microwave devices and methods in new operating regimes. Here we review the use of microwave signals and systems in quantum computing

Quantum dot lasers - history and future prospects

January 29, 2021
Author(s)
Richard Mirin, John E. Bowers, Justin Norman
We describe the initial efforts to use molecular beam epitaxy to grow InAs quantum dots on GaAs via the Stranski-Krastanow transition. We then discuss the initial efforts to use these quantum dots to demonstrate quantum dot lasers. We discuss the

Recent Industrial Roadmaps to Enable Smart Manufacturing of Biopharmaceuticals

January 29, 2021
Author(s)
Sheng Lin-Gibson, Vijay Srinivasan
Biopharmaceutical manufacturing is an evolving industry with great potential to improve public health, but laden with technical and operational challenges. It has many features that are similar to other smart manufacturing industries, but it also has some

Merging experiments and computer simulations in X-ray Computed Tomography probability of detection analysis of additive manufacturing flaws

January 27, 2021
Author(s)
Felix Kim, Adam L. Pintar, Jason Fox, Jared B. Tarr, Alkan Donmez, Anne-Francoise Obaton
X-ray Computed Tomography (XCT) is a growing industrial non-destructive testing (NDT) technique for advanced manufacturing industries such as additive manufacturing (AM). Probability of detection (POD) is a critical aspect for qualifying NDT techniques

Performance Evaluation of Terrestrial Laser Scanners - A Review

January 27, 2021
Author(s)
Balasubramanian Muralikrishnan
Terrestrial laser scanners (TLSs) are increasingly used in several applications such as reverse engineering, digital reconstruction of historical monuments, geodesy and surveying, deformation monitoring of structures, forensic crime scene preservation

Strong Ferromagnetism Achieved via Breathing Lattices in Atomically Thin Cobaltites

January 27, 2021
Author(s)
Sisi Li, Qinghua Zhang, Shan Lin, Xiahan Sang, Ryan F. Need, Manuel A. Roldan, Wenjun Cui, Zhiyi Hu, Qiao Jin, Shuang Chen, Jiali Zhao, Jia-Ou Wang, Jiesu Wang, Meng He, Chen Ge, Can Wang, Hui-Bin Lu, Zhenping Wu, Haizhong Guo, Xin Tong, Tao Zhu, Brian Kirby, Lin Gu, Kui-juan Jin, Er-Jia Guo
Low-dimensional quantum materials that retain strong ferromagnetism down to monolayer thickness hold great potential for spintronic applications. However, ferromagnetism in the transition metal oxides decays severely when the thickness is scaled to the

A Highly-enriched 244Pu Reference Material for Nuclear Safeguards and Nuclear Forensic Measurements

January 26, 2021
Author(s)
Richard Essex, Ross W. Williams, Kerri C. Treinen, Amelie Hubert, Marc A. Humphrey, Jeremy D. Inglis, William S. Kinman, Joel Maassen, Maxim V. Penkin, Robert E. Steiner
A highly-enriched 244Pu isotope dilution reference material has been prepared and characterized for metrologically traceable measurements of very small quantities of plutonium. The amount of plutonium in samples associated with nuclear safeguards and

A new highly enriched 233U reference material for improved simultaneous determination of uranium amount and isotope amount ratios in trace level samples

January 26, 2021
Author(s)
Richard Essex, Ross W. Williams, Kayron T. Rogers, Cole R. Hexel, Tashi Parsons-Davis, Kerri C. Treinen
A highly-enriched 233U reference material (>0.99987 n(233U)/n(U)) has been prepared and characterized for use as an isotope dilution mass spectrometry spike. An ion exchange separation was performed on 1 gram of high purity 233U to further reduce trace

A NIST facility for Resonant Soft X-ray Scattering measuring nano-scale soft matter structure at NSLS-II

January 26, 2021
Author(s)
Eliot Gann, Glenn Holland, Regis Kline, Peter Beaucage, Dean DeLongchamp, Daniel Fischer, Brian Collins, Terry McAfee, Christopher McNeill, Thomas Crofts
We present the design and performance of a Resonant Soft X-ray Scattering (RSoXS) station designed for soft matter characterization built by the National institute of Standards and Technology (NIST) at the National Synchrotron Light Source-II (NSLS-II)

Quantitative Analysis of Zirconium Alloys Using Borate Fusion and Wavelength Dispersive X-Ray Fluorescence Spectrometry

January 26, 2021
Author(s)
John R. Sieber, Anthony F. Marlow, Rick L. Paul, Charles A. Barber, Laura J. Wood, Lee L. Yu, Alaina Rieke, Amy Kutnerian, Jessica McCandless, Candace Wallace
The National Institute of Standards and Technology (NIST) uses borate fusion, wavelength dispersive X-ray fluorescence (WDXRF) spectrometry and synthetic calibration standards for high performance, quantitative analyses of a wide range of materials

Symmetric Monoidal Categories with Attributes

January 26, 2021
Author(s)
Spencer Breiner, John S. Nolan
When designing plans in engineering, it is often necessary to consider attributes associated to objects, e.g. the location of a robot. Our aim in this paper is to incorporate attributes into existing categorical formalisms for planning, namely those based
Displaying 6901 - 6925 of 73721
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