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126526 results found

Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy

Data provided by  National Institute of Standards and Technology

Data set from peer-reviewed publication: A. J. Fleisher et al., Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy, Nature Physics. Measurements of isotope ratios are predominantly made with reference to standard specimens that have been characterized in the past. In the 1950s, the carbon isotope ratio was referenced to a belemnite sample collected by Heinz Lowenstam and Harold Urey in South Carolina?s Pee Dee region.

Tags: greenhouse gases,carbon dioxide,oceans,ph,marine mammals,remote sensing,seabirds,Environment and Climate

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Electro-optic frequency combs for rapid interrogation in cavity optomechanics

Data provided by  National Institute of Standards and Technology

Data for D. A. Long, B. J. Reschovsky, F. Zhou, Y. Bao, T. W. LeBrun, and J. J. Gorman, "Electro-optic frequency combs for rapid interrogation in cavity optomechanics," Optics Letters Vol. 46, Issue 3, pp. 645-648 (2021), https://doi.org/10.1364/OL.405299

Tags: Optical microcavities,accelerometry,optical frequency combs

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Mission Critical Voice Quality of Experience Access Time Measurement Method Addendum Data

Data provided by  National Institute of Standards and Technology

These are measurement data associated with https://doi.org/10.6028/NIST.IR.8328. Code to process data is available at https://github.com/usnistgov/accessTime. Includes access delay measurement results for P25 Direct operating in unencrypted and encrypted modes, P25 Trunked Phase 1 and Phase 2 operating in unencrypted and encrypted modes, and an early development of a 3GPP compliant LTE MCPTT application server. Transmit audio and associated cutpoints files are also included.

Tags: Access delay; Articulation Band Correlation Modified Rhyme Test (ABC-MRT); A-weight; Encryption; Key performance indicator (KPI); Land mobile radio (LMR); Latency; Long Term Evolution (LTE); Mission Critical Push-to-Talk (MCPTT); Modified Rhyme Test (MRT); Mouth-to-ear (M2E); Packetized; Project 25 (P25); Public Safety; Push-to-talk (PTT); Quality of experience (QoE); Receive; Streaming; Transmit; Vocoder

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Characterizing LTE User Equipment Emissions Under Closed-Loop Power Control

Data provided by  National Institute of Standards and Technology

This data is provided as a supplement to NIST Technical Note 2147, Characterizing LTE User Equipment Emissions Under Closed-Loop Power Control. In particular, the data provided here is sufficient to reproduce all of the plots and analyses in Chapters 5 and 6, which present the data analysis results. See the data description document provided in the zip file for an outline of the contents and the technical note referenced above for details on the data collection.

Tags: wireless communications,Long Term Evolution (LTE)

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Data and Code for Analysis presented in NIST TN 2137: Quantifying Operational Resilience Benefits of the Smart Grid

Data provided by  National Institute of Standards and Technology

This MIDAS object contains all the data inputs and code necessary to replicate the findings presented in NIST TN2137 using the statistical software Stata.

Tags: Hurricane Irma,interoperability,resilience,smart grid

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Near-infrared cavity ring-down spectroscopy measurements of nitrous oxide in the (4200)?(0000) and (5000)?(0000) bands

Data provided by  National Institute of Standards and Technology

Data for generation of figures in "Near-infrared cavity ring-down spectroscopy measurements of nitrous oxide in the (4200)<-(0000) and (5000),<-(0000) bands" DOI: https://doi.org/10.1016/j.jqsrt.2021.107527

Tags: nitrous oxide; cavity ring-down spectroscopy,advanced spectroscopic line shapes

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Economic Census: Accommodation and Food Services: Primary Type of Food Service for the U.S. and States: 2017

Data provided by  United States Census Bureau

This dataset presents statistics for Accommodation and Food Services: Primary Type of Food Service for the U.S. and States

Tags: census

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Source: http://api.census.gov/data/2017/ecnfoodsvc

Data for Multi-site, multi-platform comparison of magnetic resonance imaging (MRI) T1 measurement using the International Society of Magnetic Resonance in Medicine/National Institute of Standards and Technology (ISMRM/NIST) system phantom

Data provided by  National Institute of Standards and Technology

Data for multi-site, multi-platform comparison of magnetic resonance imaging (MRI) T1 measurement using the International Society of Magnetic Resonance in Medicine/National Institute of Standards and Technology (ISMRM/NIST) system phantom. Includes data sets for T1 measurement by inversion recovery (IR) and variable flip angle (VFA) methods at 1.5 tesla and 3 tesla. At 1.5 T, data is from 2 different vendor systems, 9 total MRI machines. At 3 T, data is from 3 different vendor systems, 18 total MRI machines.

Tags: magnetic resonance imaging,MRI,T1,phantom

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NexusLIMS: a Python Package for EM Experiment Metadata Management

Data provided by  National Institute of Standards and Technology

This code repository contains the "back-end" of the Nexus Microscopy Facility Laboratory Information Management System (NexusLIMS), developed by the NIST Office of Data and Informatics. Its primary function is to build XML-formatted research experiment records by combining metadata from many different sources (reservation systems, the collected data files, a session logger, etc.). These records are structured according to the "Nexus Experiment" schema, meaning they can be loaded into a repository and used for structured data queries.

Tags: laboratory information management,materials microscopy,electron microscopy,data management,scientific data,reproducibility,open science

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Source: https://github.com/usnistgov/NexusLIMS/

Economic Census: Finance and Insurance: Administrative Expenses and Losses Incurred for Property and Casualty Insurance Carriers for the U.S.: 2017

Data provided by  United States Census Bureau

This dataset presents statistics for Finance and Insurance: Administrative Expenses and Losses Incurred for Property and Casualty Insurance Carriers for the U.S.

Tags: census

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Source: http://api.census.gov/data/2017/ecnadbnprop