AndreaBozzo/ceres-open-data-index huggingface dataset:
SRM 918c Potassium Chloride General and Ion Activity Standard

This Standard Reference Material (SRM) is intended for use as an analytical standard of known purity.  It is intended primarily for use in the calibration and standardization of procedures for potassium (K) and chloride (Cl-) determinations employed in clinical analysis, including those using ion-selective electrodes, and for routine critical evaluation of the daily working standards used in these procedures.  This lot of potassium chloride (KCl) was prepared to ensure a material of high purity and homogeneity and has been assayed after heating at 110 degrees C to 120 degrees C.  A unit of SRM 918c consists of a single glass bottle containing 30 g of the material. This data is public in the Certificate of Analysis for this material.

Tags: potassium-chloride, srm, standard-reference-material
Organization: National Institute of Standards and Technology
Sampling-Agnostic Software Framework for Converting Between Texture Map Representations of Virtual Environments

We have developed a utility to both stitch cube maps into other types of texture maps (equirectangular, dual paraboloid, and octahedral), and stitch those other types back into cube maps. The utility allows for flexibility in the image size of the conversion - the user can specify the desired image width, and the height is computed (cube, paraboloid, and octahedral mappings are square, and spherical maps are generated to have 16:9 aspect ratio). Moreover, the utility is sampling-agnostic, so the user can select whether to use uniform or jittered sampling over the pixels, as well as the number of samples to use per pixel. The rest of this paper discusses the mathematical framework for projecting from cube maps to equirectangular, dual paraboloid, and octahedral environment maps, as well as the mathematical framework for the inverse projections. We also describe two sampling techniques: uniform sampling and correlated multi-jittered sampling. We perform an evaluation of the sampling techniques and a comparative analysis of the different projections using objective image quality assessment metrics.

Tags: equirectangular-octahedral-paraboloid-projection-sampling-texture-map-transformation
Organization: National Institute of Standards and Technology
FIB SEM image data set of Caenorhabditis elegans exposed to 60 nm Au nanoparticles

This folder contains image data sets from 14 separate serial sectioning sessions.  The entire data folder consists of 1379 8 bit tif images and is 47.3 GB in size.  Serial sectioning was performed using FEI  Helios 660 NanoLab focused ion beam scanning electron microscope (FIB SEM) and Auto Slice and View G3 software.  The sample was a heavy metal stained and resin embedded Caenorhabditis elegans (C. elegans) that were exposed to 60 nm Au nanoparticles.  Detailed descriptions of the worm preparation and resin block processing are described in Johnson, M.E. et al. (ACS Nano, 2016). Although the images were collected over 14 different sessions, they represent a contiguous section of a worm.

Tags: advanced-materials, biosciences-and-health, environment-and-climate, manufacturing, nanotechnology, visualization-research
Organization: National Institute of Standards and Technology
Reference Data Set of Human Skin Reflectance

This data set contains 100 reference reflectance spectra of human skin, spanning the wavelength region from 250 nm to 2500 nm.  The spectra were acquired with a commercially available spectrophotometer and are directly traceable to the national scale for directional-hemispherical reflectance factor.

Tags: hyperspectral, medical, reflectance, remote-sensing, skin, spectral, tissue
Organization: National Institute of Standards and Technology
3D Data for the Evaluation of Point-Based, Rigid Body Registration Error

Datasets to evaluate the performance of point-based, rigid-body registration may be downloaded from this site.  Registration is the process of transforming one coordinate frame to another coordinate frame.

The datasets contain 3D position measurements obtained from three instruments:  a laser tracker (LT), a motion capture system (System A), and a large-scale metrology system (System B).  The positions are for points that are in a semi-regular, 5 x 5 x 5 grid.  The grid covers a volume that is approximately (3 x 3 x 1.8) m [L x W x H].  The measurement uncertainties are ± 25e-03 mm for the laser tracker, ± 250e-03 mm for System B, while the accuracy of System A is only specified as sub-millimeter.  The datasets for each instrument were collected in the instrument's local coordinate frame.

The datasets contain measurements of 125 fiducials (points used for registration) and 16 test points.  Test points are points that are not used for registration but to which a transformation is applied; these points are used to evaluate the performance of the registration.

Tags: coordinate-transformation, point-based-registration, registration-error, registration-fiducials
Organization: National Institute of Standards and Technology
Cell-scaffold contact

Cell-scaffold contact measurements are derived from pairs of co-registered volumetric fluorescent confocal laser scanning microscopy (CLSM) images (z-stacks) of stained cells and spun coat, large microfiber, and medium microfiber scaffolds. Our analysis of the acquired terabyte-sized collection is motivated by the need to understand dimensionality of cell-scaffold interactions relevant to tissue engineers that grow cells on biomaterial scaffolds. The raw and processed data are publicly available from https://isg.nist.gov/deepzoomweb/data together with the web-based verification system.

Tags: cs-met-computational-metrology
Organization: National Institute of Standards and Technology
Enhanced durability of CNT based hierarchical composites subjected to accelerated aging environments.

Flexure testing, SEM, FTIR_ATR, Acoustic testing, Electrical testing, XRD, DSC, TGA

Tags: cnt-reinforced-composites, durability, environmental-aging, fuzzy-fiber-composites, hydrothermal-degradation, polymer-nanocomposites
Organization: National Institute of Standards and Technology
SRM 1721 Southern Oceanic Air (Ambient Nominal Amount-of-Substance Fraction: Carbon Dioxide, Methane, Nitrous Oxide)

Standard Reference Material-1721: Southern Oceanic Air. Ambient Nominal Amount of Substance Fraction for Carbon Dioxide, Methane & Nitrous Oxide.   This Standard Reference Material (SRM) is a primary gas mixture for which the amount-of-substance fraction,  expressed as concentration, may be related to secondary working standards. This SRM is intended for the calibration of instruments used for ambient carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) determinations and for other applications. This data is public in the Certificate of Analysis for this material.

Tags: amount-of-substance, carbon-dioxide, ch4, co2, energy, environment-and-climate, methane, n2o, nitrous-oxide, southern-oceanic-air, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 999c Potassium Chloride (High-Purity Chemical)

This Standard Reference Material (SRM) is intended for use as an analytical standard of known potassium (K) and chloride (Cl-) content.  This lot of potassium chloride (KCl) was prepared to ensure a material of high purity and homogeneity and has been assayed after drying at 500 °C.  A unit of SRM 999c consists of a single glass bottle containing 30 g of the material. This data is public in the Certificate of Analysis for this material.

Tags: chloride, clinical, food-and-nutrition, high-purity-chemical, potassium, potassium-chloride, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 972a Vitamin D Metabolites in Frozen Human Serum

SRM 972a Vitamin D Metabolites in Frozen Human Serum  - This Standard Reference Material (SRM) is intended for use as an accuracy control in the critical evaluation of methods for determining the amount-of-substance concentration of vitamin D metabolites in human serum. This SRM can also be used as a quality assurance tool for assigning values to in-house control materials for these constituents. This data is public in the Certificate of Analysis for this material.

Tags: 24r, 25-dihydroxyvitamin-d3, 25-hydroxyvitamin-d2, 25-hydroxyvitamin-d3, 3-epi-25-hydroxyvitamin-d3, biosciences-and-health, certified-values, frozen-human-serum, reference-values, srm, srm-972a, standard-reference-material, vitamin-d-metabolites
Organization: National Institute of Standards and Technology
SRM 968f Fat-Soluble Vitamins in Human Serum

Standard Reference Material (SRM) 968 and its reissues are human serum based materials used as validation standards by clinical, epidemiological, and nutrition laboratories. Historically, about 300 units of this SRM have been sold annually. Based on this annual sales projection, as of November 1, 2015 there were about 16 months of inventory of the current issue: SRM 968e Fat-Soluble Vitamins, Carotenoids, and Cholesterol in Human Serum. To avoid a gap in service to our customers, it is necessary to have the next issue of SRM 968 available for use in several NIST-organized interlaboratory comparison studies.  Candidate SRM 968f Fat-Soluble Vitamins in Human Serum was prepared by the contractor as a two-component renewal. Approximately 3000 (Â± 10 %) vials of each of the two serum pools were delivered to NIST in March 2016. This material will be certified by NIST for retinol, alpha- and beta-/gamma-tocopherol. Other selected analytes measured by collaborating laboratories will be provided as reference or information values. Samples for these studies were shipped to participants in the NIST Micronutrients Measurement Quality Assurance Program for analysis beginning in early June 2016.  NIST will evaluate this data for possible value assignment of the analytes of interest.

Tags: biosciences-and-health, clinical, fat-soluble-vitamins, frozen-human-serum
Organization: National Institute of Standards and Technology
SRM 635a Portland Cement (Blended with Slag)

SRM 635a Portland Cement (Blended with Slag) - This Standard Reference Material (SRM) is intended primarily for use in validation of chemical and instrumental methods of analysis of cements and materials of similar matrix for elemental contents. It can be used to validate value assignment of in-house reference materials. This data is public in the Certificate of Analysis for this material.

Tags: manufacturing
Organization: National Institute of Standards and Technology
SRM 3949  Folate Vitamers in Frozen Human Serum

Standard Reference Material 3949 Folate Vitamers in Frozen Human Serum

Tags: biosciences-and-health, certified-values, folate-vitamers, folates, folic-acid, frozen-human-serum, reference-values, srm, srm-3949, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3673 Organic Contaminants in Non-Smokers' Urine (Frozen)

SRM 3673 Organic Contaminants in Non-Smokers' Urine (Frozen) - This Standard Reference Material (SRM) is intended for use in evaluating analytical methods for the determination of selected hydroxylated polycyclic aromatic hydrocarbons (hydroxylated PAHs) and phthalate, phenol, and volatile organic compound (VOC) metabolites in urine. All of the constituents for which certified and reference values are provided are naturally present in the urine. This data is public in the Certificate of Analysis for this material.

Tags: drugs, environment-and-climate, health-markers, hydroxylated-pahs, phenol-metabolites, phthalate-metabolites, reference-materials, voc-metabolites
Organization: National Institute of Standards and Technology
SRM 3672 Organic Contaminants in Smokers' Urine (Frozen)

SRM 3672 Organic Contaminants in Smokers' Urine (Frozen) - This Standard Reference Material (SRM) is intended for use in evaluating analytical methods for the determination of selected hydroxylated polycyclic aromatic hydrocarbons (hydroxylated PAHs) and phthalate, phenol, and volatile organic compound (VOC) metabolites in urine. All of the constituents for which certified and reference values are provided are naturally present in the urine. This data is public in the Certificate of Analysis for this material.

Tags: drugs, environment-and-climate, health-markers, hydroxylated-pahs, phenol-metabolites, phthalate-metabolites, reference-materials, voc-metabolites
Organization: National Institute of Standards and Technology
SRM 3669 Arsenic Species in Frozen Human Urine (Elevated Levels)

SRM 3669 Arsenic Species in Frozen Human Urine (Elevated Levels) - This Standard Reference Material (SRM) is intended primarily for validating analytical methods and measurements for the determination of arsenic species in human urine. A unit of SRM 3669 consists of five pouches each containing a vial of arsenic species in frozen human urine at elevated levels. Each vial contains nominally 1.5 mL of urine. This data is public in the Certificate of Analysis for this material.

Tags: arsenic, arsenic-species, biosciences-and-health, srm-3669, urine
Organization: National Institute of Standards and Technology
SRM 3532 Calcium-Containing Solid Oral Dosage Form

SRM 3532 Calcium-Containing Solid Oral Dosage Form - This Standard Reference Material (SRM) is intended primarily for validation of methods for determining cholecalciferol (vitamin D3) and elements in a calcium dietary supplement and similar materials. This SRM can also be used for quality assurance when assigning values to in-house reference materials. A unit of SRM 3532 consists of five packets, each containing approximately 10 g of material. This data is public in the Certificate of Analysis for this material.

Tags: calcium-supplement, certified-value, dietary-supplements, food, food-and-nutrition, nutrition, reference-value, srm, srm-3532, standard-reference-materials
Organization: National Institute of Standards and Technology
SRM 3290 Dry Cat Food

SRM 3290 Dry Cat Food - This Standard Reference Material (SRM) is intended primarily for use in validating methods for determining proximates, fatty acids, vitamins, elements, and amino acids in dry cat food and similar matrices. This SRM can also be used for quality assurance when assigning values to in-house control materials. This SRM is a blend of commercially available dry cat foods. A unit of SRM 3290 consists of five heat-sealed, aluminized pouches, each containing approximately 10 g of material. This data is public in the Certificate of Analysis for this material.

Tags: certified-values, dry-cat-food, food, food-and-nutrition, nutrition, reference-values, srm, srm-3290, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3287 Blueberry (Fruit)

SRM 3287 Blueberry (Fruit). This Standard  Reference  Material (SRM) is intended  primarily  for  use  in  validating analytical  methods  for the determination of  organic  acids  and  nutrients in blueberries and  similar  materials.  This  SRM can also be used for quality assurance when assigning values to in-house control materials.  A unit of SRM 3287 consists of five packets, each containing approximately 5 g of freeze-dried, powdered fruit. This data is public in the Certificate of Analysis for this material.

Tags: anthocyanin, blueberry, certified-value, dietary-supplement, food, food-and-nutrition, nutrition, reference-value, srm, srm-3287, standard-reference-materials
Organization: National Institute of Standards and Technology
SRM 3282 Low-Calorie Cranberry Juice Cocktail

SRM 3282 Low-Calorie Cranberry Juice Cocktail. This Standard  Reference  Material (SRM) is  intended  primarily  for  use  in  validating  analytical  methods for the determination of organic acids and nutrient elements in cranberry juice cocktails and similar matrices. This SRM can also be used for quality assurance when assigning values to in-house control materials.  A unit of SRM 3282 consists of five ampoules, each containing approximately 1.2 mL of material. This data is public in the Certificate of Analysis for this material.

Tags: anthocyanin, certified-value, cranberry-juice, food, food-and-nutrition, juice, nutrition, reference-value, srm, srm-3282, standard-reference-materials
Organization: National Institute of Standards and Technology
SRM 3235 Soy Milk

SRM 3235 Soy Milk - This Standard Reference Material (SRM) is intended primarily for validation of methods for determining vitamins, elements, proximates, fatty acids, and amino acids in soy milk and similar materials. This SRM can also be used for quality assurance when assigning values to in-house reference materials. The SRM is a soy milk prepared by a commercial manufacturer. A unit of SRM 3235 consists of 10 ampoules, each containing approximately 10 mL of material. This data is public in the Certificate of Analysis for this material.

Tags: certified-values, dietary-supplements, food, food-and-nutrition, nutrition, reference-values, soy, soy-milk, srm, srm-3235, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3186 Phosphate Anion (PO43-) Standard Solution

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of phosphate using anion ion chromatography (IC) or other methods.  A unit of SRM 3186 consists of five 10 mL sealed borosilicate glass ampoules of solution prepared gravimetrically to contain a known mass fraction of phosphate dissolved in filtered (0.22 ?m) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, phosphate, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3185 Nitrate Anion (NO3-) Standard Solution

This Standard Reference Material (SRM) is intended as a primary standard for the quantitative determination of nitrate using anion ion chromatography (IC) or other methods.  A unit of SRM 3185 consists of five 10 mL sealed borosilicate glass ampoules of solution.  The solution is prepared gravimetrically to contain a known mass fraction of nitrate dissolved in filtered (0.22 µm) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, nitrate, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3184 Bromide Anion (Br-) Standard Solution

This Standard Reference Material (SRM) is intended as a primary calibration standard for the quantitative determination of bromide using anion ion chromatography (IC) or other methods.  A unit of SRM 3184 consists of five 10 mL sealed borosilicate glass ampoules of solution prepared gravimetrically to contain a known mass fraction of bromide dissolved in filtered (0.22 µm) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, bromide, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3183 Fluoride Anion (F-) Standard Solution

This Standard Reference Material (SRM) is intended as a primary calibration standard for the quantitative determination of fluoride using anion ion chromatography (IC) or other methods.  A unit of SRM 3183 consists of 50 mL of solution in a high density polyethylene bottle sealed in an aluminized bag.  The solution is prepared gravimetrically to contain a known mass fraction of fluoride dissolved in filtered (0.22 µm) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, fluoride, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3182 Chloride Anion (Cl-) Standard Solution

This Standard Reference Material (SRM) is intended as a primary standard for the quantitative determination of chloride using anion ion chromatography (IC) or other methods.  A unit of SRM 3182 consists of five 10 mL sealed borosilicate glass ampoules of solution.  The solution is prepared gravimetrically to contain a known mass fraction of chloride dissolved in filtered (0.22 µm) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, chloride, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3181 Sulfate Anion (SO42-) Standard Solution

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of sulfate using anion ion chromatography (IC) or other methods.  A unit of SRM 3181 consists of five 10 mL sealed borosilicate glass ampoules of solution prepared gravimetrically to contain a known mass fraction of sulfate dissolved in filtered (0.22 ?m) water having a minimum resistivity of 18 megaohm centimeters. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, srm, standard-reference-material, sulfate
Organization: National Institute of Standards and Technology
SRM 3180 Iodide Anion (I-) Standard Solution

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of iodide.  A unit of SRM 3180 consists of five 5 mL, sealed, amber, borosilicate glass ampoules of solution prepared gravimetrically to contain a known mass fraction of iodide.  The matrix of the solution is water containing sodium sulfite at a concentration of approximately 0.01 mol/L and sodium hydroxide at a concentration of approximately 0.005 mol/L. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, anion, iodide, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3166a Ytterbium (Yb) Standard Solution Lot No 140114

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of ytterbium.  A unit of SRM 3166a consists of five 10 mL sealed borosilicate glass ampoules of an acidified aqueous solution prepared gravimetrically to contain a known mass fraction of ytterbium.  The solution contains nitric acid at a volume fraction of approximately 10 %, equivalent to an amount of substance concentration (molarity) of approximately 1.6 mol/L. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, cations, pure-materials, single-element-solutions, spectrometry, ytterbium
Organization: National Institute of Standards and Technology
SRM 3239 Isoflavones Calibration Solution

SRM 3239 Isoflavones Calibration Solution - This Standard Reference Material (SRM) is intended primarily for use in calibration of instruments and techniques used for the determination of isoflavones. SRM 3239 consists of two solutions containing isoflavones at levels that reflect the mass fraction ratios found in soy products. This data is public in the Certificate of Analysis for this material.

Tags: certified-values, dietary-supplements, food-and-nutrition, isoflavones, nutrition, srm, srm-3239, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 3165 Vanadium (V) Standard Solution Lot No. 992706

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of vanadium.  A unit of SRM 3165 consists of five 10  mL sealed borosilicate glass ampoules of an acidified aqueous solution prepared gravimetrically to contain a known mass fraction of vanadium.  The solution contains nitric acid at an amount of substance concentration (molarity) of approximately 1.6 mol/L. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, cations, metals, pure-materials, single-element-solutions, spectrometry, vanadium
Organization: National Institute of Standards and Technology