cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.13741639
title: Data underpinning the publication "Frequency Tripling via Sum-Frequency Generation at the Nanoscale"

description: The whole dataset is provided a single zipped folder. Unzip the folder and open it to find the document "Data_description.html", which describes in detail and links all the files contained in this dataset.
DOI: 10.15468/dl.5t44rq
title: Occurrence Download

description: A dataset containing 52 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Viburnum discolor Benth.)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 52 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010076-250415084134356/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vpyzv3
title: Occurrence Download

description: A dataset containing 499 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is one of (CHN.2_1, CHN.2.1_1)",
 "OccurrenceStatus is Present",
 "TaxonKey is Lycaenidae",
 "Year 2016-2025"
 ]
}

 The dataset includes 499 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010075-250415084134356/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4vu5d5
title: Occurrence Download

description: A dataset containing 2248 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-45.53319 -21.16672,-41.98484 -21.16672,-41.98484 -17.98064,-45.53319 -17.98064,-45.53319 -21.16672))",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Mammalia"
 ]
}

 The dataset includes 2248 records from 33 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010077-250415084134356/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.7910/dvn/daysy2
title: NEPAssist | National Environmental Policy Act | US EPA

description: EJSCREEN allows users to access high-resolution environmental and demographic information for locations in the United States, and compare their selected locations to the rest of the state, EPA region, or the nation.
DOI: 10.15468/dl.f8vmr4
title: Occurrence Download

description: A dataset containing 231834 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Glaucidium brasilianum (J.F.Gmelin, 1788)"
 ]
}

 The dataset includes 231834 records from 205 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010042-250415084134356/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/yhyy8hbjpr.1
title: Ethical Management of Cutaneous Squamous Cell Carcinoma in Pregnancy: Balancing Maternal Health and Fetal Safety

description: Supplemental Table for JAAD Manuscript: "Ethical Management of Cutaneous Squamous Cell Carcinoma in Pregnancy: Balancing Maternal Health and Fetal Safety."
DOI: 10.15468/dl.oiljyw
title: Occurrence Download

description: A dataset containing 882182122 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "BasisOfRecord is Observation",
 "BasisOfRecord is Machine Observation",
 "BasisOfRecord is Human Observation"
 ]
 },
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 882182122 records from 11864 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0048591-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.15312658
title: Bio-oil elemental composition and heating value

description: Bio-oil elemental composition and heating value.
DOI: 10.5281/zenodo.15312659
title: Bio-oil elemental composition and heating value

description: Bio-oil elemental composition and heating value.
DOI: 10.5281/zenodo.15312622
title: Biomass proximate analysis

description: Biomass proximate analysis
DOI: 10.5281/zenodo.15312623
title: Biomass proximate analysis

description: Biomass proximate analysis
DOI: 10.15468/dl.as9ec7
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Myiophobus fasciatus)",
 "Country is one of (Algeria, Angola, Benin, Botswana, British Indian Ocean Territory, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic, Chad, Comoros, Congo, Congo, Democratic Republic of the, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, French Southern Territories, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Mayotte, Morocco, Mozambique, Namibia, Niger, Nigeria, Réunion, Rwanda, Saint Helena, Ascension and Tristan da Cunha, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, South Sudan, Sudan, Tanzania, United Republic of, Togo, Tunisia, Uganda, Western Sahara, Zambia, Zimbabwe)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029058-250802193616735/datasets/export for details.
DOI: 10.5281/zenodo.16777003
title: coverage files
DOI: 10.5281/zenodo.16777004
title: coverage files
DOI: 10.15468/dl.fnffft
title: Occurrence Download

description: A dataset containing 57 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Johnius macropterus"
 ]
}

 The dataset includes 57 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029060-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jnymq2
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, Cyprus, Georgia, Hong Kong, India, Indonesia, Iran (Islamic Republic of), Iraq, Israel, Japan, Jordan, Kazakhstan, Korea (Democratic People’s Republic of), Korea, Republic of, Kuwait, Kyrgyzstan, Lao People’s Democratic Republic, Lebanon, Macao, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Oman, Pakistan, Palestine, State of, Philippines, Qatar, Saudi Arabia, Singapore, Sri Lanka, Syrian Arab Republic, Tajikistan, Thailand, Timor-Leste, Türkiye, Turkmenistan, United Arab Emirates, Uzbekistan, Viet Nam, Yemen)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029064-250802193616735/datasets/export for details.
DOI: 10.15468/dl.7gdvhc
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States of America)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029062-250802193616735/datasets/export for details.
DOI: 10.15468/dl.97jxu6
title: Occurrence Download

description: A dataset containing 43026 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (Anguilla, Antigua and Barbuda, Argentina, Aruba, Bahamas, Barbados, Belize, Bolivia (Plurinational State of), Bonaire, Sint Eustatius and Saba, Bouvet Island, Brazil, Cayman Islands, Chile, Colombia, Costa Rica, Cuba, Curaçao, Dominica, Dominican Republic, Ecuador, El Salvador, Falkland Islands (Malvinas), French Guiana, Grenada, Guadeloupe, Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Montserrat, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Saint Barthélemy, Saint Kitts and Nevis, Saint Lucia, Saint Martin (French part), Saint Vincent and the Grenadines, Sint Maarten (Dutch part), South Georgia and the South Sandwich Islands, Suriname, Trinidad and Tobago, Turks and Caicos Islands, Uruguay, Venezuela (Bolivarian Republic of), Virgin Islands (British), Virgin Islands (U.S.))"
 ]
}

 The dataset includes 43026 records from 56 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029063-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.c7j78j
title: Occurrence Download

description: A dataset containing 14666 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Allium paradoxum"
 ]
}

 The dataset includes 14666 records from 115 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029065-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fp7hqq
title: Occurrence Download

description: A dataset containing 6489 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is one of (Angola, Burundi, Central African Republic, Benin, Cameroon, Congo, Congo, Democratic Republic of the, Equatorial Guinea, Côte d’Ivoire, Gabon, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Nigeria, Rwanda, Sierra Leone, South Sudan, Tanzania, United Republic of, Togo, Uganda, Zambia)",
 "TaxonKey is Stephanoaetus coronatus",
 "Year 1996-2025"
 ]
}

 The dataset includes 6489 records from 29 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029066-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cs6j9k
title: Occurrence Download

description: A dataset containing 1929 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is one of (Angola, Burundi, Central African Republic, Benin, Cameroon, Congo, Congo, Democratic Republic of the, Equatorial Guinea, Côte d’Ivoire, Gabon, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Nigeria, Rwanda, Sierra Leone, South Sudan, Tanzania, United Republic of, Togo, Uganda, Zambia)",
 "TaxonKey is Pan troglodytes",
 "Year 1996-2025"
 ]
}

 The dataset includes 1929 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029067-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kx7x4r
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is BOLD:AAU0872"
 ]
}

 The dataset includes 4 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029068-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.3cfuam
title: Occurrence Download

description: A dataset containing 900 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Sericornis spilodera)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 900 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029069-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.dbc48j
title: Occurrence Download

description: A dataset containing 5815 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Spindalis nigricephala)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 5815 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029070-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tpfen5
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (American Samoa, Australia, Christmas Island, Cocos (Keeling) Islands, Cook Islands, Fiji, French Polynesia, Guam, Heard Island and McDonald Islands, Kiribati, Marshall Islands, Micronesia (Federated States of), Nauru, New Caledonia, New Zealand, Niue, Norfolk Island, Northern Mariana Islands, Palau, Papua New Guinea, Pitcairn, Samoa, Solomon Islands, Tokelau, Tonga, Tuvalu, United States Minor Outlying Islands, Vanuatu, Wallis and Futuna)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029072-250802193616735/datasets/export for details.
DOI: 10.5281/zenodo.15856622
title: Code and data supplement: Analytical and modelling strategies for thermal histories from in situ (U-Th-Sm)/He data of single apatites

description: This is the code and data supplement for the manuscript "Analytical and modelling strategies for thermal histories from in situ (U-Th-Sm)/He data of single apatites".

The Matlab code to calculate the alpha-stopping distance weighted parent nuclide concentration (Caw) along with test files and explanations can be found in CawParentNuclidesMatlab.zip.

Supplementary data, including grain photomicrographs, He measurement details, and all U, Th, and Sm measurements, can be found in GrainPhotomicrographs.zip and HeAndPnConcentrations.zip, respectively.
DOI: 10.5281/zenodo.15856623
title: Code and data supplement: Analytical and modelling strategies for thermal histories from in situ (U-Th-Sm)/He data of single apatites

description: This is the code and data supplement for the manuscript "Analytical and modelling strategies for thermal histories from in situ (U-Th-Sm)/He data of single apatites".

The Matlab code to calculate the alpha-stopping distance weighted parent nuclide concentration (Caw) along with test files and explanations can be found in CawParentNuclidesMatlab.zip.

Supplementary data, including grain photomicrographs, He measurement details, and all U, Th, and Sm measurements, can be found in GrainPhotomicrographs.zip and HeAndPnConcentrations.zip, respectively.
DOI: 10.60520/ieda/113921
title: Experimental data on biotite-melt trace-element partitioning

description: Biotite is a key hydrous silicate mineral in evolved magmatic systems, but its control on the behaviour of minor- and trace-elements, in particular the REE, Nb, Li, and F is not well understood. Here, we quantify that control in sodic (per)alkaline H2O-saturated magmas with variable F-content through crystallisation experiments at 650--800ºC and 200 MPa total pressure, at log fO2 ~FMQ +1. Biotite-glass pairs from tephriphonolite to phonolite fall deposits from Tenerife, Canary Islands, complement our experimental data set. The biotite-melt Kd F/OH exchange coefficients are 2.9–47.0, typically 6.5–12.5, with minima for Al-rich, Mg-poor biotite. Lithium partition coefficients are 0.24–32.8 with minima in Si-poor biotite formed at high temperatures. D values for the large alkali metal ions Na–Cs define Onuma parabole consistent with their incorporation on the biotite XII A-site. Niobium partition coefficients are 0.1–1.2, and highest in Ti-rich biotite. The REE and actinides have D values less than 0.01 as their ionic radii fall between the size of the XII A-site and VI M-sites of biotite. Our data, alongside a literature compilation constrain empirical models that: (1) describe the exchange of F and OH between the silicate melt and the biotite W-site; (2) predict the partitioning of 1+ cations Li–Cs between silicate melt and the biotite A- and M-sites; (3) predict D Nb values. The models use the major-element composition of biotite and melt, pressure and temperature as input. Models are calibrated for use over a wide range of $P$-$T$-$X$ and can be used to interrogate biotite from natural systems to determine the composition of their source melt, or to forward model the trace-element evolution of mafic to evolved igneous systems at upper-mantle to crustal pressures.
DOI: 10.15468/dl.ksta2r
title: Occurrence Download

description: A dataset containing 373 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "Geometry POLYGON((21.71984 36.41515,38.5375 36.41515,38.5375 43.14812,21.71984 43.14812,21.71984 36.41515))",
 "Geometry POLYGON((27.87458 40.46248,30.70582 40.46248,30.70582 42.18086,27.87458 42.18086,27.87458 40.46248))"
 ]
 },
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Podarcis siculus"
 ]
}

 The dataset includes 373 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029073-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9cp46s
title: Occurrence Download

description: A dataset containing 51976 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Cameroon",
 "BasisOfRecord is one of (Occurrence evidence, Human Observation)",
 "HasCoordinate is true",
 "Elevation is greater than or equal to -1000m",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 51976 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029056-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.khmpff
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (Åland Islands, Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czechia, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Guernsey, Holy See, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Republic of, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russian Federation, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard and Jan Mayen, Sweden, Switzerland, Ukraine, United Kingdom of Great Britain and Northern Ireland)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029074-250802193616735/datasets/export for details.
DOI: 10.15468/dl.2hgpy6
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Lathrotriccus euleri)",
 "Country is one of (Algeria, Angola, Benin, Botswana, British Indian Ocean Territory, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic, Chad, Comoros, Congo, Congo, Democratic Republic of the, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, French Southern Territories, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Mayotte, Morocco, Mozambique, Namibia, Niger, Nigeria, Réunion, Rwanda, Saint Helena, Ascension and Tristan da Cunha, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, South Sudan, Sudan, Tanzania, United Republic of, Togo, Tunisia, Uganda, Western Sahara, Zambia, Zimbabwe)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029075-250802193616735/datasets/export for details.
DOI: 10.15468/dl.d5q34g
title: Occurrence Download

description: A dataset containing 14 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Sciaena macropterus"
 ]
}

 The dataset includes 14 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029077-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kg8sm4
title: Occurrence Download

description: A dataset containing 13723 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-71.91018 12.32122,-72.03573 12.24732,-71.96161 12.1172,-71.83757 12.20593,-71.91018 12.32122))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 13723 records from 46 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029078-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ryu3kt
title: Occurrence Download

description: A dataset containing 21692 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Spindalis zena)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 21692 records from 26 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029079-250802193616735/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.16779653
title: Deriving the Gravitational Constant from the Black Hole Cygnus X-1

description:  

This document explores the possibility of deriving the gravitational constant G directly from observational data of the black hole Cygnus X-1, using the photogravitational index. The updated version includes corrected physical parameters, explanations of the relationship between radiation and spacetime geometry, and a case study of the event