cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.28209
title: Investigation on growth and spectroscopic properties of Nd3+, Ho3+ co-doped KPb2Cl5 single crystal for laser application
title: Investigation on growth and spectroscopic properties of Nd3+, Ho3+ co-doped KPb2Cl5 single crystal for laser application

description: The Nd,Ho:KPb2Cl5 single crystal was successfully grown by the Bridgman method for the first time. The absorption spectrum, fluorescence spectra, and fluorescence lifetimes were investigated under 808 nm laser diode (LD) excitation. Based on the Judd-Ofelt theory, the radiation properties of Ho3+ ions were thoroughly investigated. The Ωi (i=2,4,6) parameters were fitted as 7.758×10−20, 2.413×10−20, and 0.395×10−20 cm2, respectively. Intense infrared emission bands were observed with the peaks at 2002, 2852.5, and 3910 nm. The fluorescence lifetimes of the 5I7, 5I6, and 5I5 energy levels of Ho3+ ions were determined to be 9.435, 1.640, and 0.810 ms, respectively. The visible upconversion emissions were also observed in the Nd,Ho:KPb2Cl5 crystal excited by 808 nm LD. The energy transfer processes between Nd3+ and Ho3+ ions were discussed in detail. All results demonstrate that the Nd,Ho:KPb2Cl5 crystal has great potential as a gain medium for mid-infrared lasers.
description: The Nd,Ho:KPb2Cl5 single crystal was successfully grown by the Bridgman method for the first time. The absorption spectrum, fluorescence spectra, and fluorescence lifetimes were investigated under 808 nm laser diode (LD) excitation. Based on the Judd-Ofelt theory, the radiation properties of Ho3+ ions were thoroughly investigated. The Ωi (i=2,4,6) parameters were fitted as 7.758×10−20, 2.413×10−20, and 0.395×10−20 cm2, respectively. Intense infrared emission bands were observed with the peaks at 2002, 2852.5, and 3910 nm. The fluorescence lifetimes of the 5I7, 5I6, and 5I5 energy levels of Ho3+ ions were determined to be 9.435, 1.640, and 0.810 ms, respectively. The visible upconversion emissions were also observed in the Nd,Ho:KPb2Cl5 crystal excited by 808 nm LD. The energy transfer processes between Nd3+ and Ho3+ ions were discussed in detail. All results demonstrate that the Nd,Ho:KPb2Cl5 crystal has great potential as a gain medium for mid-infrared lasers.
DOI: 10.57760/sciencedb.20798
title: BPDF-DPC-CN: Polarized reflectance in China
title: BPDF-DPC-CN: Polarized reflectance in China

description: The DPC-2 (Directional Polarimetric Camera-2) sensor was launched in September 2021 on board GF-5(02) satellite. This dataset (BPDF-DPC-CN) is based on the DPC-2/GF-5(02) polarization data from March 2022 to February 2023.Firstly, the DPC-2/GF-5(02) L1B data were processed by removing the cloud and snow, and the satellite polarimetric data were temporally and spatially matched with the SONET (Sun-sky radiometer Observation NETwork) ground-based observation data. Secondly, the polarimetric atmospheric correction were conducted for pixels with low aerosol optical depth, and we acquired the surface polarized reflectance nearby SONET stations. Finally, we kept 10000 data with the best quality under each land cover type in China through expert decision-making.This dataset provides BPDF (Bidirectional Polarization Distribution Function), the percentage of each IGBP (International Geosphere-Biosphere Programme) type, NDVI (Normalized Difference Vegetation Index), latitude and longitude, and observation geometry in China under 6 major different IGBP types (4, 9, 10, 12, 13, 16).
description: The DPC-2 (Directional Polarimetric Camera-2) sensor was launched in September 2021 on board GF-5(02) satellite. This dataset (BPDF-DPC-CN) is based on the DPC-2/GF-5(02) polarization data from March 2022 to February 2023.Firstly, the DPC-2/GF-5(02) L1B data were processed by removing the cloud and snow, and the satellite polarimetric data were temporally and spatially matched with the SONET (Sun-sky radiometer Observation NETwork) ground-based observation data. Secondly, the polarimetric atmospheric correction were conducted for pixels with low aerosol optical depth, and we acquired the surface polarized reflectance nearby SONET stations. Finally, we kept 10000 data with the best quality under each land cover type in China through expert decision-making.This dataset provides BPDF (Bidirectional Polarization Distribution Function), the percentage of each IGBP (International Geosphere-Biosphere Programme) type, NDVI (Normalized Difference Vegetation Index), latitude and longitude, and observation geometry in China under 6 major different IGBP types (4, 9, 10, 12, 13, 16).
DOI: 10.57760/sciencedb.28196
title: WRF-ML Coupling Toolkit: Machine Learning-Based Optimization Code (XGBoost/RF/LSTM) for Extreme Event Simulation in Wanzhou Section of Three Gorges Reservoir Area
title: WRF-ML Coupling Toolkit: Machine Learning-Based Optimization Code (XGBoost/RF/LSTM) for Extreme Event Simulation in Wanzhou Section of Three Gorges Reservoir Area

description: This dataset provides Jupyter Notebook (.ipynb) scripts for post-processing optimization of WRF model outputs. It integrates XGBoost, Random Forest (RF), and Long Short-Term Memory (LSTM) algorithms to correct systematic biases in high-resolution simulations (focusing on extreme events: heavy rainfall, heatwaves) over the complex terrain of Wanzhou, Three Gorges Reservoir Area. The code enables intelligent calibration of meteorological variables (temperature, precipitation, wind speed) and supports climate resilience studies in the Yangtze River Basin.
description: This dataset provides Jupyter Notebook (.ipynb) scripts for post-processing optimization of WRF model outputs. It integrates XGBoost, Random Forest (RF), and Long Short-Term Memory (LSTM) algorithms to correct systematic biases in high-resolution simulations (focusing on extreme events: heavy rainfall, heatwaves) over the complex terrain of Wanzhou, Three Gorges Reservoir Area. The code enables intelligent calibration of meteorological variables (temperature, precipitation, wind speed) and supports climate resilience studies in the Yangtze River Basin.
DOI: 10.57760/sciencedb.27795
title: Optimization of Fermentation Conditions and Evaluation of Biocontrol Efficacy of Bacillus velezensis A4
title: 贝莱斯芽孢杆菌 A4 的发酵条件优化及生防效果评价

description: Data on the optimization of fermentation conditions and biocontrol effect evaluation of Bacillus velezensis A4
description: Data on the optimization of fermentation conditions and biocontrol effect evaluation of Bacillus velezensis A4
DOI: 10.15468/dl.69auqg
title: Occurrence Download

description: A dataset containing 68 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Raphanus sativus",
 "Country is Portugal",
 "HasCoordinate is true"
 ]
}

 The dataset includes 68 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042405-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.57760/sciencedb.28202
title: A dataset from a long-term fertilization experiment in alpine meadows on the Qinghai-Tibet Plateau.
title: A dataset from a long-term fertilization experiment in alpine meadows on the Qinghai-Tibet Plateau.

description: This dataset is derived from long-term fertilization experiments conducted at the Walaka experimental site on the Qinghai-Tibet Plateau, encompassing two complementary studies. The primary experiment, established in March 2000, includes five (NH₄)₂HPO₄ fertilization levels (F0–F120) with four replicates each, transitioning to recovery treatments (R0–R120) post-2015. A supplementary P addition experiment (2019–2022) with six P₂O₅ levels (P0–P10) and six replicates was added to assess N-related effects.  Sampling occurred in September 2010, 2021, and 2022, focusing on soil and vegetation responses. Key data include soil physicochemical properties, gross nitrification rates, gross mineralization rates, nitrous oxide emissions, and nitrifying microbial communities (e.g., AOA, AOB, CladeA, CladeB). Plant biomass (shoot and root) and nutrient concentrations were measured via quadrat sampling and drying. All data reflect responses to long-term fertilization and recovery dynamics, supporting analyses of nutrient cycling and microbial ecological processes in alpine meadows.
description: This dataset is derived from long-term fertilization experiments conducted at the Walaka experimental site on the Qinghai-Tibet Plateau, encompassing two complementary studies. The primary experiment, established in March 2000, includes five (NH₄)₂HPO₄ fertilization levels (F0–F120) with four replicates each, transitioning to recovery treatments (R0–R120) post-2015. A supplementary P addition experiment (2019–2022) with six P₂O₅ levels (P0–P10) and six replicates was added to assess N-related effects.  Sampling occurred in September 2010, 2021, and 2022, focusing on soil and vegetation responses. Key data include soil physicochemical properties, gross nitrification rates, gross mineralization rates, nitrous oxide emissions, and nitrifying microbial communities (e.g., AOA, AOB, CladeA, CladeB). Plant biomass (shoot and root) and nutrient concentrations were measured via quadrat sampling and drying. All data reflect responses to long-term fertilization and recovery dynamics, supporting analyses of nutrient cycling and microbial ecological processes in alpine meadows.
DOI: 10.57760/sciencedb.28180
title: The impact of human activities on the trade-off/synergy relationship of ecosystem services in the Loess Plateau
title: 人类活动对黄土高原生态系统服务权衡/协同关系的影响

description: This study focuses on the Loess Plateau region from 2000 to 2020, aiming to reveal the impact of human activities on the trade-offs/synergies between ecosystem services (food production, soil conservation, water production, carbon sequestration) at the grid and county scales. Research on integrating multiple periods (2000, 2010, 2020) of land use, socio-economic, and natural environment data, constructing a spatially explicit Human Activity Intensity Index (HAI) based on the ArcGIS platform, and applying the InVEST model to quantitatively evaluate the spatial distribution pattern of key ecosystem services. On this basis, the spatiotemporal evolution characteristics of the trade-offs/synergies between ecosystem services are quantitatively characterized through correlation analysis and difference comparison methods, and the spatial heterogeneity and scale effects of human activity intensity on these trade-offs/synergies are finally measured using a geographically weighted regression (GWR) model. 
description: This study focuses on the Loess Plateau region from 2000 to 2020, aiming to reveal the impact of human activities on the trade-offs/synergies between ecosystem services (food production, soil conservation, water production, carbon sequestration) at the grid and county scales. Research on integrating multiple periods (2000, 2010, 2020) of land use, socio-economic, and natural environment data, constructing a spatially explicit Human Activity Intensity Index (HAI) based on the ArcGIS platform, and applying the InVEST model to quantitatively evaluate the spatial distribution pattern of key ecosystem services. On this basis, the spatiotemporal evolution characteristics of the trade-offs/synergies between ecosystem services are quantitatively characterized through correlation analysis and difference comparison methods, and the spatial heterogeneity and scale effects of human activity intensity on these trade-offs/synergies are finally measured using a geographically weighted regression (GWR) model.
DOI: 10.57760/sciencedb.10158
title: NJIAS Himawari-8/9 Cloud Feature Dataset (HCFD)–0.04Deg. Part IV: 2022–2023
title: NJIAS Himawari-8/9 Cloud Feature Dataset (HCFD)–0.04Deg. Part IV: 2022–2023

description: The NJIAS HCFD–0.04Deg provides a comprehensive description of cloud features over the west North Pacific regions spanning 10°N–50°N and 80°E–170°W. It includes 26 variables, such as cloud mask, type, top height, optical thickness, and particle effective radius, as well as snow and dust masks, which were generated from the visible and infrared measurements of the Advanced Himawari Imager onboard the Japanese geostationary satellites Himawari-8/9, based on a series of cloud retrieval algorithms developed by Dr. Zhuge. As the fourth part of NJIAS HCFD–0.04Deg, this dataset covers the period from January 2022 to December 2023, with a temporal resolution of 30 min and a spatial resolution of 0.04°. The data are now distributed under CC BY 4.0 license.
description: The NJIAS HCFD–0.04Deg provides a comprehensive description of cloud features over the west North Pacific regions spanning 10°N–50°N and 80°E–170°W. It includes 26 variables, such as cloud mask, type, top height, optical thickness, and particle effective radius, as well as snow and dust masks, which were generated from the visible and infrared measurements of the Advanced Himawari Imager onboard the Japanese geostationary satellites Himawari-8/9, based on a series of cloud retrieval algorithms developed by Dr. Zhuge. As the fourth part of NJIAS HCFD–0.04Deg, this dataset covers the period from January 2022 to December 2023, with a temporal resolution of 30 min and a spatial resolution of 0.04°. The data are now distributed under CC BY 4.0 license.
DOI: 10.57760/sciencedb.28197
title: Ocean Bottom Seismometer data from profile OBS2017-1 in the southern Mariana Trench, covering the subducting plate
title: Ocean Bottom Seismometer data from profile OBS2017-1 in the southern Mariana Trench, covering the subducting plate

description: In 2017, following the successful development of the 10,000-meter-depth OBS, profiles OBS2017-1 was conducted in the southern Mariana Trench aboard the R/V Tan Suo Yi Hao. Profile OBS2017-1 is 430 km-long, oriented parallel to the profiles OBS2017-1 and OBS2016-2 . This study focuses on a 150-km-long segment of the profile OBS2017-1, extending from the Caroline Plateau to the trench axis, including the bend-faulting zone. Fifteen OBS stations were analyzed, including three 10,000-meter-deep instruments (OBS26, 27, 28), which were deployed at depths 8,000–10,000 m and successfully recovered. The seismic survey employed a four-air-gun array with a total volume of 6,000 cubic inches, firing shots every 80 s at an average speed of 5 knots, resulting in a total of 750 shots being fired. This setup enabled detailed examination of the structural variations within the crust and upper mantle as the Caroline Plateau approaches the trench.
description: In 2017, following the successful development of the 10,000-meter-depth OBS, profiles OBS2017-1 was conducted in the southern Mariana Trench aboard the R/V Tan Suo Yi Hao. Profile OBS2017-1 is 430 km-long, oriented parallel to the profiles OBS2017-1 and OBS2016-2 . This study focuses on a 150-km-long segment of the profile OBS2017-1, extending from the Caroline Plateau to the trench axis, including the bend-faulting zone. Fifteen OBS stations were analyzed, including three 10,000-meter-deep instruments (OBS26, 27, 28), which were deployed at depths 8,000–10,000 m and successfully recovered. The seismic survey employed a four-air-gun array with a total volume of 6,000 cubic inches, firing shots every 80 s at an average speed of 5 knots, resulting in a total of 750 shots being fired. This setup enabled detailed examination of the structural variations within the crust and upper mantle as the Caroline Plateau approaches the trench.
DOI: 10.15468/dl.tvj8q3
title: Occurrence Download

description: A dataset containing 411 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Disphyma crassifolium",
 "Country is United Kingdom of Great Britain and Northern Ireland",
 "HasCoordinate is true"
 ]
}

 The dataset includes 411 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042406-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jbm5xw
title: Occurrence Download

description: A dataset containing 133 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Opuntia elata",
 "Country is Portugal",
 "HasCoordinate is true"
 ]
}

 The dataset includes 133 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042410-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wehany
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Salix triandra",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042409-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.zybyyh
title: Occurrence Download

description: A dataset containing 44 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Opuntia elata",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 44 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042407-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vxveq3
title: Occurrence Download

description: A dataset containing 23166 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Eucalyptus melliodora"
 ]
}

 The dataset includes 23166 records from 75 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042408-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tdyuaq
title: Occurrence Download

description: A dataset containing 1248 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Centrophorus uyato"
 ]
}

 The dataset includes 1248 records from 42 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042411-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.sv6e2d
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Raphanus sativus",
 "Country is Qatar",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042412-250717081556266/datasets/export for details.
DOI: 10.15468/dl.wzefdx
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Odontesthes piquava)",
 "BasisOfRecord is one of (Specimen, Literature Occurrence, Human Observation, Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1991",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 10 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042414-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.rbkmfe
title: Occurrence Download

description: A dataset containing 11498 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Taphozous"
 ]
}

 The dataset includes 11498 records from 174 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042413-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.frysd2
title: Occurrence Download

description: A dataset containing 9 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Opuntia elata",
 "Country is South Africa",
 "HasCoordinate is true"
 ]
}

 The dataset includes 9 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042415-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5erad7
title: Occurrence Download

description: A dataset containing 95000 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 (Ammospiza nelsoni)",
 "Country is one of (Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States of America)"
 ]
}

 The dataset includes 95000 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042378-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.a979he
title: Occurrence Download

description: A dataset containing 35 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Raphanus sativus",
 "Country is Romania",
 "HasCoordinate is true"
 ]
}

 The dataset includes 35 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042416-250717081556266/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.29640581
title: Street network sub-patterns and travel mode

description: This item is part of a study on the relationship between urban morphology and human mobility using graph-theoretical and statistical methods. The research involves a comparative classification of built environments in nine U.S. metropolitan areas based on density, connectivity, and spatial structure. The materials uploaded here include [figures/maps/data/code] supporting the identification of morphological patterns and their link to mobility indicators such as public transport use and car dependence. These results contribute to a reproducible framework for integrating spatial typologies into urban mobility analysis and planning.
DOI: 10.6084/m9.figshare.29640581.v1
title: Street network sub-patterns and travel mode

description: This item is part of a study on the relationship between urban morphology and human mobility using graph-theoretical and statistical methods. The research involves a comparative classification of built environments in nine U.S. metropolitan areas based on density, connectivity, and spatial structure. The materials uploaded here include [figures/maps/data/code] supporting the identification of morphological patterns and their link to mobility indicators such as public transport use and car dependence. These results contribute to a reproducible framework for integrating spatial typologies into urban mobility analysis and planning.
DOI: 10.15468/dl.g7jm9d
title: Occurrence Download

description: A dataset containing 23 species occurrences available in GBIF matching the query:
{
 "and" : [
 "OccurrenceStatus is Present",
 "TaxonKey is Brongniartites"
 ]
}

 The dataset includes 23 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042418-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.