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Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan
Data provided by National Institute of Standards and Technology
Values are computed for the dilute-gas diffusivity of water isotopologues in N2, CO2, and their mixture at a composition representing the atmosphere of Mars, for standard conditions of 101.325 kPa and water mole fraction approaching zero. Values are similarly computed for the diffusivity of methane isotopologues in N2, representing the atmosphere of Titan. Calculations employ state-of-the-art intermolecular potentials and classical trajectory calculations as described in the paper by R. Hellmann and A.H.
Tags: diffusivity,isotopes,Mars,Titan,water,methane,carbon dioxide,nitrogen,atmospheric science,
Modified: 2024-02-22
Views: 0
Datasets from an interlaboratory comparison to characterize a multi-modal polydisperse sub-micrometer bead dispersion
Data provided by National Institute of Standards and Technology
These four data files contain datasets from an interlaboratory comparison that characterized a polydisperse five-population bead dispersion in water. A more detailed version of this description is available in the ReadMe file (PdP-ILC_datasets_ReadMe_v1.txt), which also includes definitions of abbreviations used in the data files. Paired samples were evaluated, so the datasets are organized as pairs associated with a randomly assigned laboratory number.
Tags: Biosciences and Health,particle,protein particle,sub-micrometer particle,subvisible particle,particle tracking analysis,resonant mass measurement,electrical sensing zone,holographic particle characterization,flow imaging,laser diffraction,flow cytometry,
Modified: 2024-02-22
Views: 0
Ideal-gas Thermochemical Properties for Carbon Dioxide and its Isotopologues Calculated from Partition Functions
Data provided by National Institute of Standards and Technology
Tabulations at 1 K intervals from 1 K to 6000 K of the partition function and standard-state isobaric heat capacity, entropy, and enthalpy for the 12 natural isotopologues of CO2, along with their standard uncertainties. Calculations performed with a partition function constructed from spectroscopic and theoretical data as described in the Appendix of the paper by A.H. Harvey, S.A. Tashkun, and E.W. Lemmon, to be submitted to J. Phys. Chem. Ref. Data. Note that the model does not account for dissociation of the CO2 molecule, making the results incomplete above approximately 3500 K.
Tags: carbon dioxide,heat capacity,enthalpy,entropy,ideal-gas properties,equation of state,partition function,thermochemistry,
Modified: 2024-02-22
Views: 0
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,
Modified: 2024-02-22
Views: 0
NIST/ARPA-E Database of Novel and Emerging Adsorbent Materials
Data provided by National Institute of Standards and Technology
The NIST/ARPA-E Database of Novel and Emerging Adsorbent Materials is a free, web-based catalog of adsorbent materials and measured adsorption properties of numerous materials obtained from article entries from the scientific literature. Search fields for the database include adsorbent material, adsorbate gas, experimental conditions (pressure, temperature), and bibliographic information (author, title, journal), and results from queries are provided as a list of articles matching the search parameters.
Tags: adsorbate,adsorbent,adsorption,isotherm,metal organic Framework,porous Material,surface science,Advanced Materials,Energy,Environment and Climate,manufacturing,
Modified: 2024-02-22
Views: 0
NIST Greenhouse Gas Data
Data provided by National Institute of Standards and Technology
Integrated Path Differential Absorption LIDAR Measurement of CO2, CH4, and H2O near 1.6 microns
Tags: greenhouse gases,carbon dioxide,methane,remote sensing,lidar,
Modified: 2024-02-22
Views: 0
Commutability assessment of selected SRMs
Data provided by National Institute of Standards and Technology
Interlaboratory data from assessments of SRMs and other method comparison samples
Tags: Biosciences and Health,
Modified: 2024-02-22
Views: 0
SRM 1877 Beryllium Oxide Powder
Data provided by National Institute of Standards and Technology
SRM 1877 Beryllium Oxide Powder - This Standard Reference Material (SRM) is intended for use in laboratory analysis and health research for the development and validation of analytical methods and instruments used to determine beryllium, as well as for proficiency testing of laboratories involved in beryllium determinations. A unit of SRM 1877 consists of one bottle containing 20 g of beryllium oxide powder. This data is public in the Certificate of Analysis for this material.
Tags: Advanced Materials,
Modified: 2024-02-22
Views: 0
SRM 1950 Metabolites in Frozen Human Plasma
Data provided by National Institute of Standards and Technology
SRM 1950 Metabolites in Frozen Human Plasma - This Standard Reference Material (SRM) is intended primarily for validation of methods for determining metabolites such as fatty acids, electrolytes, vitamins, hormones, and amino acids in human plasma and similar materials. This SRM can also be used for comparison of measurement technologies used in metabolomic studies and for quality assurance when assigning values to in-house reference materials. This SRM is intended to represent "normal" human plasma.
Tags: Standard Reference Material,SRM,SRM 1950,human plasma,certified values,reference values,metabolites,Biosciences and Health,
Modified: 2024-02-22
Views: 0
SRM 2193a Calcium Carbonate pH Standard [used as saturated Ca(OH)2 solution]
Data provided by National Institute of Standards and Technology
SRM 2193a Calcium Carbonate pH Standard [used as saturated Ca(OH)2 solution] - This Standard Reference Material (SRM) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems at pH values above 11.0. This lot of calcium carbonate (CaCO3) was selected for its low level of alkali metal impurities. However, this SRM is certified ONLY as a pH standard, NOT as a pure substance. A unit of SRM 2193a consists of 30 g of CaCO3. This data is public in the Certificate of Analysis for this material.
Tags: Biosciences and Health,Environment and Climate,Food and Nutrition,
Modified: 2024-02-22
Views: 0