cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.17582506
title: Dataset on Bubble Column with Commercial Fine-Bubble Diffuser: Effects of Surfactant Concentration and Air Flow Rates

description: This dataset accompanies the article “Surfactant Effects on Oxygen Transfer and Bubble Dynamics in a Fine-Bubble Diffuser Aeration Column” by Oscar Prades-Mateu et al. (2025). It contains the experimental data used to evaluate the influence of surfactant concentration and airflow rate on oxygen mass transfer in a bubble column equipped with a commercial fine-bubble diffuser.

The experiments were conducted in a square bubble column with internal dimensions of 0.4 m × 0.4 m × 0.8 m, using a commercial fine-pore rubber diffuser (D-Rex model, Flexnorm membrane, OTT Group). The system was operated with deionized water and Sodium Dodecyl Sulphate (SDS) as the surfactant. Five surfactant concentrations were tested: 0, 2, 4, 6, and 8 mg/L, together with five airflow rates: 20, 40, 60, 80, and 100 L/min.

All experiments were carried out at a water temperature of 13 ± 1 °C.

For each condition (combination of surfactant concentration and air flow rate), the following key parameters were experimentally determined:





Volumetric mass transfer coefficient (kₗa) — obtained from dynamic oxygen transfer experiments according to ASCE (1993) standard.




Bubble size and shape — determined from high-speed image analysis (20 cm and 70 cm above the diffuser) and expressed as Sauter mean diameter (d₃₂).




Gas holdup (ε) — derived from liquid height variation captured by a camera.




Interfacial area concentration (a) — estimated from ε and d₃₂.




Liquid-side mass transfer coefficient (kₗ) — calculated as kₗ = (kₗa)/a.



The dataset is organized as follows:





First CSV: figures_data_COLUMN.xlsx – Data from figures of the papers.




Second CSV: bubble_size_distribution_COLUMN.xlsx – includes all measured and derived parameters for each combination of surfactant concentration and airflow rate.



These data allow users to reproduce the main findings, validate correlations for gas holdup and mass transfer, and develop or benchmark predictive models for oxygen transfer in aeration systems influenced by surfactants.

Keywords:Bubble column, Fine-bubble diffuser, Oxygen transfer, Surfactant concentration, SDS, Gas holdup, Bubble size, Mass transfer coefficient, Aeration efficiency
DOI: 10.5281/zenodo.17582505
title: Dataset on Bubble Column with Commercial Fine-Bubble Diffuser: Effects of Surfactant Concentration and Air Flow Rates

description: This dataset accompanies the article “Surfactant Effects on Oxygen Transfer and Bubble Dynamics in a Fine-Bubble Diffuser Aeration Column” by Oscar Prades-Mateu et al. (2025). It contains the experimental data used to evaluate the influence of surfactant concentration and airflow rate on oxygen mass transfer in a bubble column equipped with a commercial fine-bubble diffuser.

The experiments were conducted in a square bubble column with internal dimensions of 0.4 m × 0.4 m × 0.8 m, using a commercial fine-pore rubber diffuser (D-Rex model, Flexnorm membrane, OTT Group). The system was operated with deionized water and Sodium Dodecyl Sulphate (SDS) as the surfactant. Five surfactant concentrations were tested: 0, 2, 4, 6, and 8 mg/L, together with five airflow rates: 20, 40, 60, 80, and 100 L/min.

All experiments were carried out at a water temperature of 13 ± 1 °C.

For each condition (combination of surfactant concentration and air flow rate), the following key parameters were experimentally determined:





Volumetric mass transfer coefficient (kₗa) — obtained from dynamic oxygen transfer experiments according to ASCE (1993) standard.




Bubble size and shape — determined from high-speed image analysis (20 cm and 70 cm above the diffuser) and expressed as Sauter mean diameter (d₃₂).




Gas holdup (ε) — derived from liquid height variation captured by a camera.




Interfacial area concentration (a) — estimated from ε and d₃₂.




Liquid-side mass transfer coefficient (kₗ) — calculated as kₗ = (kₗa)/a.



The dataset is organized as follows:





First CSV: figures_data_COLUMN.xlsx – Data from figures of the papers.




Second CSV: bubble_size_distribution_COLUMN.xlsx – includes all measured and derived parameters for each combination of surfactant concentration and airflow rate.



These data allow users to reproduce the main findings, validate correlations for gas holdup and mass transfer, and develop or benchmark predictive models for oxygen transfer in aeration systems influenced by surfactants.

Keywords:Bubble column, Fine-bubble diffuser, Oxygen transfer, Surfactant concentration, SDS, Gas holdup, Bubble size, Mass transfer coefficient, Aeration efficiency
DOI: 10.5517/ccdc.csd.cc2hxxn0
title: CCDC 2321703: Experimental Crystal Structure Determination

description: Related Article: Xiaoming Ma|2025|CSD Communication|||
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/ccdc.csd.cc2hylnq
title: CCDC 2322354: Experimental Crystal Structure Determination

description: Related Article: Pei-Pei Zhang, Bo-Lun Zhang, Wen-Jing Shi, Jun Chen, Wen-Tao Song, Jian-Jun Zhang, Shuqin Liu, Jun Ni|2024|Sens.Actuators,B|214|135888|doi:10.1016/j.snb.2024.135888
description: Related Article: Pei-Pei Zhang, Bolun Zhang, Wen-Jing Shi, Jun Chen, Wen-Tao Song, Jian-Jun Zhang, Shuqin Liu, Jun Ni|2025|CSD Communication|||
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/ccdc.csd.cc2hylpr
title: CCDC 2322355: Experimental Crystal Structure Determination

description: Related Article: Pei-Pei Zhang, Bo-Lun Zhang, Wen-Jing Shi, Jun Chen, Wen-Tao Song, Jian-Jun Zhang, Shuqin Liu, Jun Ni|2024|Sens.Actuators,B|214|135888|doi:10.1016/j.snb.2024.135888
description: Related Article: Pei-Pei Zhang, Bolun Zhang, Wen-Jing Shi, Jun Chen, Wen-Tao Song, Jian-Jun Zhang, Shuqin Liu, Jun Ni|2025|CSD Communication|||
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/ccdc.csd.cc2j0jz2
title: CCDC 2324224: Experimental Crystal Structure Determination

description: Related Article: Jinyan tan|2025|CSD Communication|||
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/ccdc.csd.cc2j280x
title: CCDC 2325868: Experimental Crystal Structure Determination

description: Related Article: Jagajiban Sendh and Jubaraj Bikash Baruah|2025|CSD Communication|||
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/ccdc.csd.cc2j281y
title: CCDC 2325869: Experimental Crystal Structure Determination

description: Related Article: Jagajiban Sendh and Jubaraj Bikash Baruah|2025|CSD Communication|||
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/ccdc.csd.cc2j2830
title: CCDC 2325871: Experimental Crystal Structure Determination

description: Related Article: Jagajiban Sendh and Jubaraj Bikash Baruah|2025|CSD Communication|||
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/ccdc.csd.cc2j2ccc
title: CCDC 2325972: Experimental Crystal Structure Determination

description: Related Article: Yuga Shibuya, Makoto Oba, Shinichi Koguchi|2025|CSD Communication|||
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/ccdc.csd.cc2kz7rk
title: CCDC 2382559: Experimental Crystal Structure Determination

description: Related Article: Zong-Yi Zhang, Xing Wang, Yuan Gao, Yao-Yue Fan, Jian-Min Yue, Jin-Xin Zhao|2025|CSD Communication|||
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/ccdc.csd.cc2nxmlt
title: CCDC 2470377: Experimental Crystal Structure Determination

description: Related Article: Dongjing Hong|2025|CSD Communication|||
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/ccdc.csd.cc2p2w3s
title: CCDC 2475415: Experimental Crystal Structure Determination

description: Related Article: Joel Mague, Y. El Bakri|2025|CSD Communication|||
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: 10.15468/dl.mtsphg
title: Occurrence Download

description: A dataset containing 4279 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Observation, Machine Observation, Human Observation, Occurrence evidence)",
 "Continent is Africa",
 "TaxonKey is Giraffa tippelskirchi"
 ]
}

 The dataset includes 4279 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032901-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5517/ccdc.csd.cc2p2wc1
title: CCDC 2475423: Experimental Crystal Structure Determination

description: Related Article: Feng Ya He|2025|CSD Communication|||
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/ccdc.csd.cc2p2wj6
title: CCDC 2475428: Experimental Crystal Structure Determination

description: Related Article: J. T. Mague, J. P. Donahue, C. Wu|2025|CSD Communication|||
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/ccdc.csd.cc2p2xpd
title: CCDC 2475464: Experimental Crystal Structure Determination

description: Related Article: Dongjing Hong|2025|CSD Communication|||
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: 10.6084/m9.figshare.30618581
title: Article Data: Solution or Problem? Discourse Analysis of Big Tech’s AI and Sustainability Framing

description: The empirical material comprises 221 corporate artifacts, including webpages, blog posts, press releases, sustainability reports, and scripted video transcripts, organized into document groups representing eleven AI developers: Alibaba, the Allen Institute for AI (Ai2), Amazon, Apple, Google (Alphabet), IBM, Meta, Microsoft, NVIDIA, Oracle, and Perplexity. These companies were selected based on their prominence in AI development and availability of corporate communication addressing their AI and sustainability initiatives. Selection drew on academic literature, media coverage of corporate AI sustainability practices, market rankings of AI tools, and recognition of major AI developers. Data collection primarily spanned late 2022 to mid-2025, coinciding with the accelerated public rollout of generative AI systems. Earlier artifacts (2017–2021) were included for context, such as Microsoft’s “AI for Earth” program launch announcement.<br>
DOI: 10.6084/m9.figshare.30618581.v1
title: Article Data: Solution or Problem? Discourse Analysis of Big Tech’s AI and Sustainability Framing

description: The empirical material comprises 221 corporate artifacts, including webpages, blog posts, press releases, sustainability reports, and scripted video transcripts, organized into document groups representing eleven AI developers: Alibaba, the Allen Institute for AI (Ai2), Amazon, Apple, Google (Alphabet), IBM, Meta, Microsoft, NVIDIA, Oracle, and Perplexity. These companies were selected based on their prominence in AI development and availability of corporate communication addressing their AI and sustainability initiatives. Selection drew on academic literature, media coverage of corporate AI sustainability practices, market rankings of AI tools, and recognition of major AI developers. Data collection primarily spanned late 2022 to mid-2025, coinciding with the accelerated public rollout of generative AI systems. Earlier artifacts (2017–2021) were included for context, such as Microsoft’s “AI for Earth” program launch announcement.<br>
DOI: 10.5517/ccdc.csd.cc2p34pn
title: CCDC 2475681: Experimental Crystal Structure Determination

description: Related Article: Till Opatz, Dieter Schollmeyer, Günther Lahm|2025|CSD Communication|||
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/ccdc.csd.cc2p34ts
title: CCDC 2475685: Experimental Crystal Structure Determination

description: Related Article: Leonie Paukert, Schollmeyer, Dieter, Nubbemeyer, Udo|2025|CSD Communication|||
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/ccdc.csd.cc2p3724
title: CCDC 2475755: Experimental Crystal Structure Determination

description: Related Article: Konstantin  Lyssenko, Lada Puntus|2025|CSD Communication|||
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/ccdc.csd.cc1yxf1b
title: CCDC 1814772: Experimental Crystal Structure Determination

description: Related Article: umarani P|2025|CSD Communication|||
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/ccdc.csd.cc2p3cgn
title: CCDC 2475891: Experimental Crystal Structure Determination

description: Related Article: Xiudu  Zhang|2025|CSD Communication|||
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/ccdc.csd.cc2m07ws
title: CCDC 2413315: Experimental Crystal Structure Determination

description: Related Article: Liwen Wei, Yuhang Chen, Qinglong Zhou, Zhikang Wei, Ting Tu, Shichao Ren, Yonggui Robin Chi, Xinglong Zhang, Xing Yang|2025|J.Am.Chem.Soc.|147|30747|doi:10.1021/jacs.5c05380
description: Related Article: Wei|2024|CSD Communication|||
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: 10.15468/dl.nxu5cf
title: Occurrence Download

description: A dataset containing 1068 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Gallotia caesaris"
 ]
}

 The dataset includes 1068 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032902-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.peu34r
title: Occurrence Download

description: A dataset containing 284 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Continent is North America",
 "Country is Mexico",
 "GadmGid is MEX.30_1",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Sylvilagus floridanus"
 ]
}

 The dataset includes 284 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032903-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5517/ccdc.csd.cc2p2x4v
title: CCDC 2475447: Experimental Crystal Structure Determination

description: Related Article: Dongjing Hong|2025|CSD Communication|||
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/ccdc.csd.cc2p2yyp
title: CCDC 2475503: Experimental Crystal Structure Determination

description: Related Article: Bing Liu|2025|CSD Communication|||
description: Related Article: Fang-Ting Wang, Qing-Yun Xie, Huan Jiao, Ling Xu|2026|J.Solid State Chem.|353|125623|doi:10.1016/j.jssc.2025.125623
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/ccdc.csd.cc2p2zxp
title: CCDC 2475533: Experimental Crystal Structure Determination

description: Related Article: Xishuo Zhang, Xiangyu Zhao, Jie Zhu, Hanlei Sun, Hongzhi Wang, Licheng Liu, Dongmei Wang, Shuo Yao|2025|Inorg.Chem.|64|18604|doi:10.1021/acs.inorgchem.5c03452
description: Related Article: limerence Aong|2025|CSD Communication|||
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/ccdc.csd.cc2p3chp
title: CCDC 2475892: Experimental Crystal Structure Determination

description: Related Article: J. T. Mague, J. P. Donahue|2025|CSD Communication|||
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: 10.15468/dl.k2qzj2
title: Occurrence Download

description: A dataset containing 326526 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is United Kingdom of Great Britain and Northern Ireland",
 "TaxonKey is Sciurus carolinensis",
 "Year 1736-2025"
 ]
}

 The dataset includes 326526 records from 146 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032855-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.