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601 results found

Fire Resilience of a Steel-Concrete Composite Floor System: Full-Scale Experimental Evaluation for U.S. Prescriptive Approach with a 2-Hour Fire-Resistance Rating (Test #1)

Data provided by  National Institute of Standards and Technology

The compartment fire test was conducted on the 9.1 m x 6.1 m steel-concrete composite floor, located in the south-central bay of the two-story steel gravity frame two bays by three bays in plan. The test floor assembly was designed and constructed to achieve a 2-hour fire-resistance rating per American Society for Testing and Materials (ASTM) standard E119. The fire-exposed composite slab was reinforced with the steel wire mesh mat (60 mm2/m) equivalent to the minimum code-prescribed steel reinforcement for shrinkage and temperature crack control under normal conditions.

Tags: fire,composite floor,steel beam,shear connection,steel building,fire resistance,passive fire protection,

Modified: 2025-04-06

multicomplex: C++ and Python code for multicomplex arithmetic

Data provided by  National Institute of Standards and Technology

The library multicomplex is an implementation of multicomplex algebra in C++ to allow for higher-order derivatives of numerical functions. Many (though not all) mathematical functions are implemented, allowing for calculation of derivatives (straight and mixed) to approximately numerical precision, which is difficult or impossible to achieve in conventional double precision

Tags: mathematics,multicomplex,derivatives,C++,python,

Modified: 2025-04-06

teqp: Templated EQuation of state Package

Data provided by  National Institute of Standards and Technology

teqp is a library written in C++ that allows for calculation of numerical derivatives of thermodynamic equations of state with respect to the independent variables with numerical differentiation tools. No hand-written derivatives are required, and the computational speed is competitive with, or better than, the results from hand-written derivatives in low-level programming languages.

Tags: equation of state,derivatives,differentiation,C++,mixture properties,

Modified: 2025-04-06

NIST/NIJ DART-MS Data Interpretation Tool

Data provided by  National Institute of Standards and Technology

Direct Analysis in Real Time Mass Spectrometry (DART-MS) is an analytical chemistry technology that is being increasingly employed in forensic applications. This form of mass spectrometry rapidly yields rich structural information about an analyte with minimal sample preparation. The challenge with DART-MS data, much like other data generated with high throughput technologies, lies in the data interpretation. This is especially true when the analyzed samples are multi-component mixtures like seized drug evidence.

Tags: source code,DART-MS,Forensic Chemistry,seized drug analysis,ILSA,

Modified: 2025-04-06

Challenging Medically-Relevant Genes Benchmark Set

Data provided by  National Institute of Standards and Technology

CMRG v1.00 of a small variant benchmark and structural variant benchmark focused on 273 challenging medically relevant genes for the Genome in a Bottle (GIAB) sample HG002 (aka Ashkenazi son). These benchmarks were generated from a trio-based hifiasm v0.11 (https://doi.org/10.1038/s41592-020-01056-5) diploid assembly of HG002 using PacBio HiFi reads for HG002 for assembly and partitioning into phased haplotypes using Illumina reads for the parents, HG003 and HG004.

Tags: Human genomics,DNA sequencing,reference materials,Medical genomics,bioinformatics,bioinformatics,

Modified: 2025-04-06

Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.

Data provided by  National Institute of Standards and Technology

Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks. The dataset consists of analyses of 30 discrete samples: 12 from sampling automobiles ("brake dust"), 10 from sampling fireworks ("sparklers" and "spinners" and "roman candles"), 8 from shooter's left or right hands. The analysis configuration meta-data for each analysis are contained in the "configuration.txt" and "script.py" files.

Tags: GSR,gunshot residue,forensic,scanning electron microscope,energy dispersive x-ray spectrometry,SEM/EDS,SEM/EDX,automated particle analsyis,APA,

Modified: 2025-04-06

Code and data for "Analysis of complex multidimensional optical spectra by linear prediction"

Data provided by  National Institute of Standards and Technology

Python code for analyzing optical 2D spectroscopy data using linear prediction from singular value decomposition. Included as supplemental information with a publication on this topic. Includes scripts and associated data to generate the figures in the paper.

Tags: optical spectroscopy; analysis; fitting;,

Modified: 2025-04-06

SEM/EDS hyperspectral data set from a Famatinite sample

Data provided by  National Institute of Standards and Technology

Famatinite is a mineral with nominal chemical formula Cu3SbS4. This electron excited X-ray data set was collected from a natural flat-polished sample and the surrounding silicate mineral. Live time/pixel: 0.70*4.0*0.95*3600.0/(512*512 # 0.95 hours on 4 detectors Probe current: 1.0 nA Beam energy: 20 keV Energy scale: 10 eV/ch and 0.0 eV offset

Tags: Famatinite,SEM,EDS,EPMA,hyperspectrum,

Modified: 2025-04-06

SEM/EDS hyperspectral image dataset from the Murphy Meteorite

Data provided by  National Institute of Standards and Technology

SEM/EDS hyperspectral image dataset from the Murphy Meteorite The Murphy Meteorite (see https://www.mindat.org/locentry-787574.html) was discovered in Murphy, Cherokee Co., North Carolina, USA in 1899. It is iron-rich. Beam Energy: 15 keV Live Time/pixel: 0.003*4.0*4.0*0.7 Probe Current: 1.04 nA

Tags: Murphy Meteorite,meteorite,SEM,EDS,SDD,EPMA,hyperspectrum,

Modified: 2025-04-06

SEM/EDS hyperspectral data set from platinum group mineral ore embedded in epoxy

Data provided by  National Institute of Standards and Technology

SEM/EDS hyperspectral data set from platinum group mineral ore embedded in epoxy Live time/pixel: 4.0*1.3*3600.0/(512*512) # 1.3 hours on 4 detectors Energy scale: 10 eV/ch and 0.0 eV offset ProbeCurrent: 1.0 nA BeamEnergy: 20.0 keV

Tags: Platinum group minerals,SEM/EDS,SEM,EDS,SDD,EPMA,hyperspectrum,

Modified: 2025-04-06