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2451 results found

The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units

Data provided by  National Institute of Standards and Technology

Recommended values are provided for chemical thermodynamic properties of inorganic substances and for organic substances usually containing only one or two carbon atoms. Where available, values are given for the enthalpy of formation, Gibbs energy of formation, entropy, and heat capacity at 298.15 K (25 degrees C), the enthalpy difference between 298.15 and 0 K and the enthalpy of formation at 0 K. All values are given in SI units and are for a standard state pressure of 100 000 pascal.

Tags: NBS Tables,chemical thermodynamics,enthalpy,entropy,Gibbs energy,inorganic chemistry,thermochemistry,evaluated data,

Modified: 2024-02-22

Views: 0

NIST Phase Diagrams & Computational Thermodynamics of Solders

Data provided by  National Institute of Standards and Technology

Phase Diagrams and Computational Thermodynamics - Solder Systems predicts melting temperatures and freezing ranges of lead-free solders which are used to remove lead-containing components from commercial products. This database also shows the effects of non-equilibrium solidification. Also included is a collection of calculated binary and ternary systems that are relevant to solders.

Tags: materials,materials science,measurement,metallurgy,phase,phase diagram,phase equilibria,science,solder,standards,technical activities,thermodynamic,

Modified: 2024-02-22

Views: 0

Data from: NIST Properties of Molten Salts Database (formerly SRD 27)

Data provided by  National Institute of Standards and Technology

NIST distributed the NIST Properties of Molten Salts Database from 1990 to 2004. As part of the NIST Standard Reference Data Program, the database was designated as Standard Reference Database 27 or SRD 27. Since the database has not been actively maintained since 1991 the SRD designation has been dropped. The database was distributed as a program for DOS compatible operating systems. To enable use of the data on modern systems, the data have been extracted into comma separated variable (CSV) files.

Tags: molten salts,density,electrical conductivity,surface tension,viscosity,

Modified: 2024-02-22

Views: 0

Complex Document Information Processing (CDIP) dataset

Data provided by  National Institute of Standards and Technology

This dataset is called the "IIT CDIP collection". "CDIP" stands for "Complex Document Information Processing" and "IIT" stands for "Illinois Institute of Technology" who originally built the dataset. The dataset consists of documents from the states' lawsuit against the tobacco industry in the 1990s.

Tags: optical character recognition,information retrieval,document structure,document understanding,image to text,

Modified: 2024-02-22

Views: 0

NIST TREC Disks 4 and 5: Retrieval Test Collections Document Set

Data provided by  National Institute of Standards and Technology

A collection of full-text documents from various sources including the Financial Times Limited (1991, 1992, 1993, 1994), the Congressional Record of the 103rd Congress (1993), the Federal Register (1994), the Foreign Broadcast Information Service (1996), and the Los Angeles Times (1989, 1990). These documents are the document set for several TREC information retrieval test collections. (Data contains document text only.)

Tags: document retrieval,information retrieval,test collections,text processing,text retrieval conferences,text retrieval,TREC,

Modified: 2024-02-22

Views: 0

CORR-DATA

Data provided by  National Institute of Standards and Technology

Corrosion is defined as the deterioration of a material due to chemical reactions with its environment. Understanding corrosion, and corrosion rates, is necessary to ensure that the design of objects we interact with every day, from the bridges we drive over to the containers used to transport chemicals, from the pipes that carry our water to the utensils we cook with, are safe and perform to specifications.

Tags: corrosion,NACE,

Modified: 2024-02-22

Views: 0

NIST Wavenumbers for Calibration of IR Spectrometers - SRD 118

Data provided by  National Institute of Standards and Technology

Wavenumber Calibration Tables from Heterodyne Frequency Measurements contains tables of gas-phase infrared transition wavenumbers and their spectroscopic assignments that are appropriate for calibrating high-spectral-resolution infrared spectrometers. The calibration lines for carbonyl sulfide (OCS), nitrous oxide (N2O), nitric oxide (NO), carbonyl sulfide (CS2), and carbon monoxide (CO) collectively extend from approximately 486 wavenumber (cm-1) to 4355 wavenumbers (cm-1) in the infrared. The bibliography and spectral atlas are current through November 1994.

Tags: Infrared calibration standards,heterodyne frequency measurements,infrared frequency standards,infrared spectroscopy,

Modified: 2024-02-22

Views: 0

NIST Digital Video 1 - NIST Special Database 26

Data provided by  National Institute of Standards and Technology

NIST Digital Video 1 is a public-domain collection of digital video created to encourage more researchers to address real-world problems and support the scientific comparison of solutions of digital video search, retrieval, and display. This collection consists of eight videos, totaling over two hours in length, selected from NIST's public domain archive of marketing, technical, and educational material.

Tags: digital videos,test collections,

Modified: 2024-02-22

Views: 0

NIST Heat Transmission Properties of Insulating and Building Materials Database - SRD 81

Data provided by  National Institute of Standards and Technology

NIST has accumulated a valuable and comprehensive collection of thermal conductivity data from measurements performed with a 200-mm square guarded-hot-plate apparatus. The guarded-hot-plate test method is arguably the most accurate and popular method for determination of thermal transmission properties of flat, homogeneous specimens under steady state conditions. Several organizations, including ASTM and ISO, have standardized the method.

Tags: building materials,conductance,energy conservations,heat conductivities,insulating materials,insulation,material databases,materials,physics,thermal insulations,thermophysical properties,

Modified: 2024-02-22

Views: 0

Color FERET Database

Data provided by  National Institute of Standards and Technology

The DOD Counterdrug Technology Program sponsored the Facial Recognition Technology (FERET) program and development of the FERET database. The National Institute of Standards and Technology (NIST) is serving as Technical Agent for distribution of the FERET database. The goal of the FERET program is to develop new techniques, technology, and algorithms for the automatic recognition of human faces. As part of the FERET program, a database of facial imagery was collected between December 1993 and August 1996. The database is used to develop, test, and evaluate face recognition algorithms.

Tags: FERET,face,biometrics,

Modified: 2024-02-22

Views: 0