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Displaying 2801 - 2825 of 74634

Complete genomic and epigenetic maps of human centromeres

April 1, 2022
Author(s)
Nicolas Altemose, Glennis Logsdon, Andrey Bzikadze, Pragya Sidhwani, Sasha Langley, Gina Caldas, Justin Zook, Ivan Alexandrov, Karen Miga
Existing human genome assemblies have almost entirely excluded repetitive sequences within and near centromeres, limiting our understanding of their organization, evolution, and functions, which include facilitating proper chromosome segregation. Now, a

Natural hazards compound COVID-19 impacts on small businesses disproportionately for historically underrepresented group operators

April 1, 2022
Author(s)
Jennifer Helgeson, Payam Aminpour Mohammadabadi, Juan Fung, Alfredo Roa Henriquez, Ariela Zycherman, David Butry, Claudia Nierenberg, Yating Zhang
In the wake of the COVID-19 pandemic small businesses made headlines as hard hit by customer losses, revenue declines, and business closures. Yet, the impacts have been felt disproportionately by small businesses that suffered interruption due to pre

Resonant X-ray Scattering in Polymer Science

April 1, 2022
Author(s)
Brian Collins, Eliot Gann
Resonant Soft X-ray Scattering (RSoXS) is an emerging, powerful technique to probe the nano-to-mesoscale ordering of polymers and other molecules. It joins together small-angle X-ray scattering (a statistical nanoprobe) with X-ray spectroscopy that brings

The Very Small-Angle Neutron Scattering Instrument at the National Institute of Standards and Technology

April 1, 2022
Author(s)
John Barker, James Moyer, Steven Kline, G. Jensen, Jeremy Cook, Cedric Gagnon, Elizabeth Kelley, Jean Philippe Chabot, Nicholas C. Maliszewskyj, Chirag Parikh, Wangchun Chen, Ryan Murphy, C. Glinka
A description and the performance of the Very Small-Angle Neutron Scattering (VSANS) Diffractometer at the National Institute of Standards and Technology are presented. The measurement range of the instrument extends over three decades of momentum transfer

Hydrogen-Induced Cracking and Blistering in Steels: A Review

March 31, 2022
Author(s)
May Ling Martin, Petros Sofronis
This paper presents a review of the current state of scientific understanding of the corrosion phenomenon known as Hydrogen-Induced Cracking (HIC). HIC is defined as cracking in ferritic steels where cracking is driven by the precipitation of gaseous

Polyoxovanadates as Precursors for the Synthesis of Colloidal Multi-Metal Oxide Nanocrystals

March 31, 2022
Author(s)
Adam Biacchi, Lucas Johnson, Ashley Sweet, Eric Cal, Angela R. Hight Walker, Matthew Buck, Luke Barrante
Colloidal multi-metal oxide nanocrystals that contain the element vanadium are attractive materials for enabling diverse technologies. Few nanocrystal systems are synthetically well-developed, however, which is attributable to a scarcity of molecular

The complete sequence of a human genome

March 31, 2022
Author(s)
Sergey Nurk, Sergey Koren, Arang Rhie, Mikko Rautiainen, Jennifer McDaniel, Nathanael David Olson, Justin Wagner, Justin Zook, Evan Eichler, Karen Miga, Adam Phillippy
Since its initial release in 2000, the human reference genome has covered only the euchromatic fraction of the genome, leaving important heterochromatic regions unfinished. Addressing the remaining 8% of the genome, the Telomere-to-Telomere (T2T)

A small-volume microcapillary rheometer

March 30, 2022
Author(s)
Paul Salipante, Steve Kuei, Steven Hudson
We demonstrate a capillary device used to measure the shear rate dependent viscosity of microliter scale volumes. Liquid samples are driven pneumatically to fill a microcapillary and partially fill a larger glass capillary. The glass capillary is mounted

Federal Research Priorities to Support Wastewater Surveillance for SARS-CoV-2

March 30, 2022
Author(s)

Sally Gutierrez, Nancy Lin, Jessica Sweeney

Almost immediately after the start of the COVID-19 pandemic in 2020, researchers and wastewater utilities around the world began analyzing untreated wastewater for the SARS-CoV-2 RNA. These efforts were largely based on prior experience analyzing
Displaying 2801 - 2825 of 74634