cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.18626434
title: Stellar Boundary Invariant Resolves Λ and H₀ Tensions

description: Are the “Crisis in Cosmology” and the “Vacuum Catastrophe” simply geometric artifacts of how we parametrize Λ and H₀?  

This data note and accompanying Python script demonstrate that two of the largest anomalies in physics—the Hubble tension and the cosmological constant problem—can be numerically reproduced as simple geometric boundary conditions, without introducing new dynamical physics or free parameters.

Key findings

Hubble tension via sphere packing

  We show that the discrepancy between global (CMB) and local (SH0ES) measurements of H₀ corresponds to the geometric difference between a continuous fluid and a discrete packed structure. Applying the 3D kissing‑number packing factor (1 + 1/12) to the Planck 2018 value H₀ᴄᴍʙ = 67.4 km/s/Mpc predicts a local value of 73.02 km/s/Mpc, matching the SH0ES measurement (73.04 ± 1.04) at the level of about 0.02 standard deviations.

 

 Cosmological constant as a horizon invariant  

  We show that the apparent 10¹²² “fine‑tuning” of Λ disappears when Λ is treated as a boundary curvature term. The dimensionless product of Λ and the Hubble‑horizon area A_H reduces to an algebraic identity of order unity (~25.8), consistent with the geometric phase‑space factor 4π(π³/15) ≈ 25.98 to within about 0.7%.

 

Content

 

PDF note: concise derivation and statement of the geometric constraints on Λ and H₀.  

Python script (`cosmic_geometry_test_suite.py`): a reproducible, zero‑parameter test suite that evaluates these geometric identities against Planck 2018 and SH0ES inputs and reports explicit PASS/FAIL criteria.
DOI: 10.15468/dl.rdn3xx
title: Occurrence Download

description: A dataset containing 16418 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Etheostoma caeruleum",
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 {
 "not" : {
 "BasisOfRecord" : [
 "is Fossil"
 ]
 }
 },
 {
 "or" : [
 {
 "not" : {
 "EstablishmentMeans" : [
 "is MANAGED"
 ]
 }
 },
 {
 "not" : {
 "EstablishmentMeans" : [
 "is not null"
 ]
 }
 }
 ]
 },
 {
 "or" : [
 "OccurrenceStatus is Present",
 {
 "not" : {
 "OccurrenceStatus" : [
 "is not null"
 ]
 }
 }
 ]
 }
 ]
}

 The dataset includes 16418 records from 49 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013149-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8ds7f7
title: Occurrence Download

description: A dataset containing 10971 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Piper aduncum",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is Fossil"
 ]
 }
 }
 ]
}

 The dataset includes 10971 records from 423 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013148-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.geb43n
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Plectrochilus diabolicus",
 "DecimalLatitude is not null",
 "DecimalLongitude is not null"
 ]
}

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013150-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vkza3v
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 2) Mercury concentration in hair of Northwest Greenland polar bears (Ursus maritimus)"
 ]
}

 The dataset includes 3 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013151-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gnc8b6
title: Occurrence Download

description: A dataset containing 4656 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Vinca minor",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Specimen)"
 ]
}

 The dataset includes 4656 records from 298 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013152-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.30341389
title: High-Shear Rheology of Shear-Thinning Fluids from Turbulent Pipe Flow Data - Datasets

description: Predicting the turbulent flow of non-Newtonian, shear-thinning fluids remains challenging in process industries due to the limited availability of rheological data at high shear rates (&gt;3,000 s⁻¹). Conventional methods, such as rotational rheometry or laminar pipe tests, capture only moderate rates (&lt;500 s⁻¹), necessitating extrapolation and introducing significant errors. We propose a practical approach to estimate high-shear rheology directly from turbulent pipe flow measurements, combining them with conventional data and applying validated correlations to fit Herschel–Bulkley and Sisko models. Applied to wastewater sludge (2.6–4.7 wt.%), adding a single turbulent data point reduced friction factor errors from 3.7–18.8% to 1.8–5.9% (Herschel–Bulkley) and from 12.4–22.4% to 2.2–5.1% (Sisko). This method enables accurate, high-shear rheology from routine flow tests, improving design and optimisation of industrial transport systems without specialist techniques.
DOI: 10.6084/m9.figshare.30341389.v1
title: High-Shear Rheology of Shear-Thinning Fluids from Turbulent Pipe Flow Data - Datasets

description: Predicting the turbulent flow of non-Newtonian, shear-thinning fluids remains challenging in process industries due to the limited availability of rheological data at high shear rates (&gt;3,000 s⁻¹). Conventional methods, such as rotational rheometry or laminar pipe tests, capture only moderate rates (&lt;500 s⁻¹), necessitating extrapolation and introducing significant errors. We propose a practical approach to estimate high-shear rheology directly from turbulent pipe flow measurements, combining them with conventional data and applying validated correlations to fit Herschel–Bulkley and Sisko models. Applied to wastewater sludge (2.6–4.7 wt.%), adding a single turbulent data point reduced friction factor errors from 3.7–18.8% to 1.8–5.9% (Herschel–Bulkley) and from 12.4–22.4% to 2.2–5.1% (Sisko). This method enables accurate, high-shear rheology from routine flow tests, improving design and optimisation of industrial transport systems without specialist techniques.
DOI: 10.15468/dl.ad72vh
title: Occurrence Download

description: A dataset containing 34 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Gamochaeta serpyllifolia",
 "Country is Portugal",
 "HasCoordinate is true"
 ]
}

 The dataset includes 34 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011551-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5517/cc4qhfr
title: CCDC 140784: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhgs
title: CCDC 140785: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhht
title: CCDC 140786: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhjv
title: CCDC 140787: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhkw
title: CCDC 140788: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhlx
title: CCDC 140789: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4qhmy
title: CCDC 140790: Experimental Crystal Structure Determination

description: Related Article: D.Berger, M.Erdmann, J.Notni, W.Imhof|2000|CrystEngComm|2|24|doi:10.1039/b000562m
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4jvvb
title: CCDC 135372: Experimental Crystal Structure Determination

description: Related Article: M.Herberhold, J.Peukert, M.Krueger, D.Daschner, W.Milius|2000|Z.Anorg.Allg.Chem.|626|1289|doi:10.1002/(SICI)1521-3749(200006)626:6<1289::AID-ZAAC1289>3.0.CO;2-O
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4jvwc
title: CCDC 135373: Experimental Crystal Structure Determination

description: Related Article: M.Herberhold, J.Peukert, M.Krueger, D.Daschner, W.Milius|2000|Z.Anorg.Allg.Chem.|626|1289|doi:10.1002/(SICI)1521-3749(200006)626:6<1289::AID-ZAAC1289>3.0.CO;2-O
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4jvxd
title: CCDC 135374: Experimental Crystal Structure Determination

description: Related Article: M.Herberhold, J.Peukert, M.Krueger, D.Daschner, W.Milius|2000|Z.Anorg.Allg.Chem.|626|1289|doi:10.1002/(SICI)1521-3749(200006)626:6<1289::AID-ZAAC1289>3.0.CO;2-O
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4k1rg
title: CCDC 135555: Experimental Crystal Structure Determination

description: Related Article: E.Gauch, J.Strahle|2000|Z.Anorg.Allg.Chem.|626|1313|doi:10.1002/(SICI)1521-3749(200006)626:6<1313::AID-ZAAC1313>3.3.CO;2-M
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4k1sh
title: CCDC 135556: Experimental Crystal Structure Determination

description: Related Article: E.Gauch, J.Strahle|2000|Z.Anorg.Allg.Chem.|626|1313|doi:10.1002/(SICI)1521-3749(200006)626:6<1313::AID-ZAAC1313>3.3.CO;2-M
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4mwk5
title: CCDC 138277: Experimental Crystal Structure Determination

description: Related Article: M.Albrecht, W.Kaim|2000|Z.Anorg.Allg.Chem.|626|1341|doi:10.1002/(SICI)1521-3749(200006)626:6<1341::AID-ZAAC1341>3.3.CO;2-S
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4mwl6
title: CCDC 138278: Experimental Crystal Structure Determination

description: Related Article: M.Albrecht, W.Kaim|2000|Z.Anorg.Allg.Chem.|626|1341|doi:10.1002/(SICI)1521-3749(200006)626:6<1341::AID-ZAAC1341>3.3.CO;2-S
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4mwm7
title: CCDC 138279: Experimental Crystal Structure Determination

description: Related Article: M.Albrecht, W.Kaim|2000|Z.Anorg.Allg.Chem.|626|1341|doi:10.1002/(SICI)1521-3749(200006)626:6<1341::AID-ZAAC1341>3.3.CO;2-S
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4n9y0
title: CCDC 138692: Experimental Crystal Structure Determination

description: Related Article: T.Grob, G.Seybert, W.Massa, K.Harms, K.Dehnicke|2000|Z.Anorg.Allg.Chem.|626|1361|doi:10.1002/(SICI)1521-3749(200006)626:6<1361::AID-ZAAC1361>3.0.CO;2-X
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4n9xz
title: CCDC 138691: Experimental Crystal Structure Determination

description: Related Article: T.Grob, G.Seybert, W.Massa, K.Harms, K.Dehnicke|2000|Z.Anorg.Allg.Chem.|626|1361|doi:10.1002/(SICI)1521-3749(200006)626:6<1361::AID-ZAAC1361>3.0.CO;2-X
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4npfw
title: CCDC 139048: Experimental Crystal Structure Determination

description: Related Article: T.Grob, G.Seybert, W.Massa, K.Harms, K.Dehnicke|2000|Z.Anorg.Allg.Chem.|626|1361|doi:10.1002/(SICI)1521-3749(200006)626:6<1361::AID-ZAAC1361>3.0.CO;2-X
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4pmm1
title: CCDC 139953: Experimental Crystal Structure Determination

description: Related Article: M.Stumme, W.Preetz|2000|Z.Anorg.Allg.Chem.|626|1367|doi:10.1002/(SICI)1521-3749(200006)626:6<1367::AID-ZAAC1367>3.3.CO;2-P
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4pmn2
title: CCDC 139954: Experimental Crystal Structure Determination

description: Related Article: M.Stumme, W.Preetz|2000|Z.Anorg.Allg.Chem.|626|1367|doi:10.1002/(SICI)1521-3749(200006)626:6<1367::AID-ZAAC1367>3.3.CO;2-P
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4p194
title: CCDC 139385: Experimental Crystal Structure Determination

description: Related Article: F.Bailly, P.Barthen, W.Breuer, H.-J.Frohn, M.Giesen, J.Helber, G.Henkel, A.Priwitzer|2000|Z.Anorg.Allg.Chem.|626|1406|doi:10.1002/(SICI)1521-3749(200006)626:6<1406::AID-ZAAC1406>3.3.CO;2-0
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4pmp3
title: CCDC 139955: Experimental Crystal Structure Determination

description: Related Article: M.Stumme, W.Preetz|2000|Z.Anorg.Allg.Chem.|626|1367|doi:10.1002/(SICI)1521-3749(200006)626:6<1367::AID-ZAAC1367>3.3.CO;2-P
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4p5yx
title: CCDC 139529: Experimental Crystal Structure Determination

description: Related Article: M.C.Aragoni, M.Arca, A.Garau, F.Isaia, V.Lippolis, G.L.Abbati, A.C.Fabretti|2000|Z.Anorg.Allg.Chem.|626|1454|doi:10.1002/(SICI)1521-3749(200006)626:6<1454::AID-ZAAC1454>3.3.CO;2-2
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc3gqw4
title: CCDC 103536: Experimental Crystal Structure Determination

description: Related Article: R.-M.Schoth, E.Lork, A.A.Kolomeitsev, G.-V.Roschenthaler|1997|J.Fluorine Chem.|84|41|doi:10.1016/S0022-1139(97)00037-7
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4p10v
title: CCDC 139376: Experimental Crystal Structure Determination

description: Related Article: S.Reymond, J.M.Brunel, G.Buono|2000|Tetrahedron:Asymm.|11|1273|doi:10.1016/S0957-4166(00)00062-8
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc3gqv3
title: CCDC 103535: Experimental Crystal Structure Determination

description: Related Article: R.-M.Schoth, E.Lork, A.A.Kolomeitsev, G.-V.Roschenthaler|1997|J.Fluorine Chem.|84|41|doi:10.1016/S0022-1139(97)00037-7
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4dsgr
title: CCDC 131454: Experimental Crystal Structure Determination

description: Related Article: M.Bokor, T.Marek, K.Suvegh, Z.S.Bocskei, J.Buschmann, A.Vertes|1999|Acta Phys.Pol.,A|95|469|
description: Related Article: T.Marek, M.Bokor, Gy.Lasanda, K.Tompa, L.Parkanyi, J.Buschmann|2000|J.Phys.Chem.Solids|61|621|doi:10.1016/S0022-3697(99)00231-0
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.