cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.17898807
title: Daten der Notaufnahmesurveillance

description: Der Datensatz "Daten der Notaufnahmesurveillance" wird durch das Robert Koch-Institut und das AKTIN-Notaufnahmeregister bei Krankenhausaufnahmen bereitgestellt. Der Datensatz beinhaltet aggregierte Routinedaten aus deutschen Notaufnahmen zur syndromischen Überwachung von akuten Erkrankungen. Dazu zählen grippeähnliche Erkrankungen (ILI), Coronavirus-Erkrankungen (COVID-19), akute respiratorische Erkrankungen (ARE), gastrointestinale Infektionen (GI) und schwere akute respiratorische Infektionen (SARI). Dabei wird der relative Anteil dieser Erkrankungen an der Gesamtzahl der Notaufnahmevorstellungen sowie die berechneten Erwartungswerte und Prädiktionsintervalle ausgewiesen. Die Daten sind nach Notaufnahmetypen und Altersgruppen aggregiert. Damit bietet der Datensatz eine wertvolle Ressource für die Forschung im Bereich der Notfallmedizin und der Überwachung akuter Gesundheitsereignisse in Deutschland.
DOI: 10.25345/c5736mf9m
title: MassIVE MSV000100188 - Cytoplasmic NAD/H synthesis via NRK1 regulates inflammatory capacity and promotes survival of CD4+ T cells - GCMS Data
title: T cell metabolism increases upon activation, underpinning immune effector functions. Nicotinamide adenine dinucleotide (NAD/H) is an essential redox cofactor for glycolysis and mitochondrial substrate oxidation. Its phosphorylation to NADP/H regulates reactive oxygen species (ROS) abundance. NAD/H levels increase upon T cell activation, but synthesis pathways and implications are not fully characterised. Here, we interrogate the role of the NAD/H-synthesis enzyme nicotinamide riboside kinase 1 (NRK1), the expression of which increases upon stimulation of both human and murine CD4+ T cells. Functionally, NRK1 activity restrains activation and cytokine production of CD4+ T cells while promoting survival. These activities are linked to increased NRK1 expression in the cytoplasm, where it locally raises NAD/H levels. This supports glycolysis, but more profoundly impacts cytoplasmic NADP/H generation, thereby controlling ROS abundance and nuclear NFAT-translocation. During fungal and viral infection, T-cell-intrinsic NRK1 maintains effector CD4+ T cell abundance within affected tissues and draining lymph nodes, thus supporting infection control. Taken together, these data confirm that subcellular regulation of immune cell metabolism determines immune responses at the level of organism.
DOI: 10.15468/dl.hza9ya
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{"type":"and","predicates":[{"type":"within","geometry":"POLYGON ((112.239 -1.58382, 112.16871 -1.589385, 112.10015 -1.605946, 112.035006 -1.633092, 111.974882 -1.670158, 111.921258 -1.716231, 111.875453 -1.770176, 111.838595 -1.830666, 111.811594 -1.896213, 111.795113 -1.965203, 111.789561 -2.035937, 111.795074 -2.106674, 111.81152 -2.175673, 111.838494 -2.241233, 111.875334 -2.301741, 111.921132 -2.355705, 111.974763 -2.401797, 112.034905 -2.43888, 112.100076 -2.46604, 112.168671 -2.482609, 112.239 -2.488178, 112.309329 -2.482609, 112.377924 -2.46604, 112.443095 -2.43888, 112.503237 -2.401797, 112.556868 -2.355705, 112.602666 -2.301741, 112.639506 -2.241233, 112.66648 -2.175673, 112.682926 -2.106674, 112.688439 -2.035937, 112.682887 -1.965203, 112.666406 -1.896213, 112.639405 -1.830666, 112.602547 -1.770176, 112.556742 -1.716231, 112.503118 -1.670158, 112.442994 -1.633092, 112.37785 -1.605946, 112.30929 -1.589385, 112.239 -1.58382))"},{"type":"equals","key":"CLASS_KEY","value":"212","matchCase":false},{"type":"greaterThanOrEquals","key":"YEAR","value":"2015","matchCase":false},{"type":"not","predicate":{"type":"in","key":"BASIS_OF_RECORD","values":["MATERIAL_CITATION","MATERIAL_SAMPLE","PRESERVED_SPECIMEN"],"matchCase":false}},{"type":"lessThanOrEquals","key":"COORDINATE_UNCERTAINTY_IN_METERS","value":"10000","matchCase":false},{"type":"equals","key":"LICENSE","value":"CC BY 4.0","matchCase":false}]}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046974-251120083545085/datasets/export for details.
DOI: 10.6084/m9.figshare.30859871
title: Supplementary data: Healthcare cost and utilization before and after the development of significant tricuspid regurgitation by age, sex and race

description: <b>These are peer-reviewed supplementary materials for the article</b><b> </b><b>'</b><b>Healthcare cost and utilization before and after the development of significant tricuspid regurgitation by age, sex and race</b><b>'</b><b> </b><b>published in the</b><b> </b><b><i>Journal of Comparative Effectiveness Research</i></b><b>.</b><b>Supplemental Table 1a: </b>Significant tricuspid regurgitation coding details.<b>Supplemental Table 1b:</b> Cohort selection criteria distribution.<b>Supplemental Table 2:</b> Tukey’s Honestly Significant Difference tests for Figure 2C.<b>Background: </b>The impact of significant tricuspid regurgitation (sTR) on healthcare costs and utilization in real-world populations remains understudied. <b>Aim:</b> Describe healthcare costs and utilization before and after development of sTR and describe differences by patient demographic characteristics.<b> Materials & </b><b>methods:</b> We conducted a retrospective, longitudinal descriptive study using a large database containing electronic health record and insurance claims data for US patients. Healthcare costs and utilization are summarized for up to 3 years prior to sTR and for 1 year after sTR. <b>Results:</b> Costs and utilization increased in the 3 years leading up to and the year after sTR. Costs were higher for patients who were: aged 50–79 years, male, and Black or Hispanic (p &lt; 0.01). Cardiovascular hospitalizations were an important driver of costs in all groups. Patients aged 80 years and over, women, and Black nonHispanic patients had fewer outpatient visits to cardiac specialists in the year following sTR (p &lt; 0.01). <b>Conclusion:</b> Healthcare costs and utilization of patients with TR increase as clinical disease progresses, with important differences by age, sex and race. Increasing recognition of signs of TR progression and improved outpatient cardiac specialty access may be important means to reduce heart failure hospitalization duration as well as overall costs.
DOI: 10.6084/m9.figshare.30859871.v1
title: Supplementary data: Healthcare cost and utilization before and after the development of significant tricuspid regurgitation by age, sex and race

description: <b>These are peer-reviewed supplementary materials for the article</b><b> </b><b>'</b><b>Healthcare cost and utilization before and after the development of significant tricuspid regurgitation by age, sex and race</b><b>'</b><b> </b><b>published in the</b><b> </b><b><i>Journal of Comparative Effectiveness Research</i></b><b>.</b><b>Supplemental Table 1a: </b>Significant tricuspid regurgitation coding details.<b>Supplemental Table 1b:</b> Cohort selection criteria distribution.<b>Supplemental Table 2:</b> Tukey’s Honestly Significant Difference tests for Figure 2C.<b>Background: </b>The impact of significant tricuspid regurgitation (sTR) on healthcare costs and utilization in real-world populations remains understudied. <b>Aim:</b> Describe healthcare costs and utilization before and after development of sTR and describe differences by patient demographic characteristics.<b> Materials & </b><b>methods:</b> We conducted a retrospective, longitudinal descriptive study using a large database containing electronic health record and insurance claims data for US patients. Healthcare costs and utilization are summarized for up to 3 years prior to sTR and for 1 year after sTR. <b>Results:</b> Costs and utilization increased in the 3 years leading up to and the year after sTR. Costs were higher for patients who were: aged 50–79 years, male, and Black or Hispanic (p &lt; 0.01). Cardiovascular hospitalizations were an important driver of costs in all groups. Patients aged 80 years and over, women, and Black nonHispanic patients had fewer outpatient visits to cardiac specialists in the year following sTR (p &lt; 0.01). <b>Conclusion:</b> Healthcare costs and utilization of patients with TR increase as clinical disease progresses, with important differences by age, sex and race. Increasing recognition of signs of TR progression and improved outpatient cardiac specialty access may be important means to reduce heart failure hospitalization duration as well as overall costs.
DOI: 10.25921/719m-5p23
title: Water temperature, salinity, and other parameters collected by CTD from NOAA Ship Reuben Lasker in the north Pacific Ocean off California from 2024-03-28 to 2024-04-03 (NCEI Accession 0309630)

description: Cruise RL-24-04 by NOAA Ship Reuben Lasker in March/April 2024 had the objective to service moorings for the CCE (California Current Ecosystem) project, as well as the CORC (Consortium on the Ocean's Role in Climate) project. To calibrate and validate the mooring data, CTD casts with water samples were taken. The CTD data are reported here. The CTD data have been quality-controlled and adjusted using the water sample data. The raw instrument data (*.xmlcon and *.hex files from the software by Sea-Bird Scientific) are provided as well. Additional cruise data files are available through the NOAA Rolling Deck to Repository program (R2R, also at NCEI, see 'references'), and the water sample data will be published separately through the Ocean Carbon and Acidification Data Portal at NCEI. Processed data are in NetCDF.
DOI: 10.25921/wrem-7170
title: Water temperature and depth data from Loggerhead Sea turtle (Caretta caretta) dive behavior from satellite tags in the Northwest Atlantic Ocean from 2009 to 2017 (NCEI Accession 0310450)

description: From 2009 to 2017, we deployed 167 satellite tags on loggerheads within the U.S. Mid-Atlantic Bight of the Northwest Atlantic Ocean. These tags collected and transmitted location, temperature and depth information and have yielded 18,790 temperature-depth profiles during the highly stratified season (01 June–04 October) for the region. This included 16,371 profiles exceeding the mixed-layer depth, and, of those, 11,591 full water column profiles reaching the ocean floor.
DOI: 10.15468/dl.9h3wxb
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is ",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Specimen, Human Observation, Material sample, Living Specimen)",
 "Year is greater than or equal to 1950"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046976-251120083545085/datasets/export for details.
DOI: 10.15468/dl.v8ek4x
title: Occurrence Download

description: A dataset containing 13965 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Tracheophyta",
 "DecimalLatitude is greater than or equal to 54.085278",
 "DecimalLatitude is less than or equal to 59.085278",
 "DecimalLongitude is greater than or equal to 135.0",
 "DecimalLongitude is less than or equal to 140.0",
 "HasCoordinate is TRUE",
 "HasGeospatialIssue is FALSE"
 ]
}

 The dataset includes 13965 records from 36 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046977-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.c5yrcz
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{"type":"and","predicates":[{"type":"within","geometry":"POLYGON ((111.569 -1.58282, 111.49871 -1.588385, 111.43015 -1.604946, 111.365006 -1.632092, 111.304882 -1.669158, 111.251258 -1.715231, 111.205453 -1.769176, 111.168596 -1.829666, 111.141594 -1.895213, 111.125113 -1.964203, 111.119561 -2.034937, 111.125075 -2.105674, 111.14152 -2.174673, 111.168494 -2.240233, 111.205334 -2.300741, 111.251133 -2.354705, 111.304763 -2.400797, 111.364905 -2.43788, 111.430076 -2.46504, 111.498671 -2.481609, 111.569 -2.487178, 111.639329 -2.481609, 111.707924 -2.46504, 111.773095 -2.43788, 111.833237 -2.400797, 111.886867 -2.354705, 111.932666 -2.300741, 111.969506 -2.240233, 111.99648 -2.174673, 112.012925 -2.105674, 112.018439 -2.034937, 112.012887 -1.964203, 111.996406 -1.895213, 111.969404 -1.829666, 111.932547 -1.769176, 111.886742 -1.715231, 111.833118 -1.669158, 111.772994 -1.632092, 111.70785 -1.604946, 111.63929 -1.588385, 111.569 -1.58282))"},{"type":"equals","key":"CLASS_KEY","value":"212","matchCase":false},{"type":"greaterThanOrEquals","key":"YEAR","value":"2015","matchCase":false},{"type":"not","predicate":{"type":"in","key":"BASIS_OF_RECORD","values":["MATERIAL_CITATION","MATERIAL_SAMPLE","PRESERVED_SPECIMEN"],"matchCase":false}},{"type":"lessThanOrEquals","key":"COORDINATE_UNCERTAINTY_IN_METERS","value":"10000","matchCase":false},{"type":"equals","key":"LICENSE","value":"CC BY 4.0","matchCase":false}]}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046978-251120083545085/datasets/export for details.
DOI: 10.5281/zenodo.15158895
title: Table 1 in A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan

description: Table 1. Frequency comparisons of selected meristic characters among Parascorpaena aurita, P. mossambica and P. poseidon sp. nov.
Pectoral-fin rays (one side/other side)Pored lateral-line scales15/1515/1616/1616/1717/1717/18181920212223242526P. aurita2151421P. mossambica152511187752P. poseidon sp. nov.18 H15 H311Longitudinal scale rows303132333435363738394041424344454647P. aurita12131P. mossambica212112374531P. poseidon sp. nov.3 H3211Scales above / below lateral line4567/9101112131415161718P. aurita153112112P. mossambica519811211571311P. poseidon sp. nov.136 H325 HScales rows between last dorsal-fin spine base and lateral lineScales rows between 6th dorsal-fin spine base and lateral line67891011126789101112P. aurita323341P. mossambica631581251212P. poseidon sp. nov.36 H12 H53Gill rakers on hypobranchialTotal gill rakers01231011121314151617P. aurita2511214P. mossambica198611094531P. poseidon sp. nov.72 H63 H
H for the counts of the holotype.
description: Published as part of Chou, Tak-Kei & Liao, Te-Yu, 2022, A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan, pp. 6 in Zoological Studies 61 (9) on page 6, DOI: 10.6620/ZS.2022.61-09, http://zenodo.org/record/8074243
DOI: 10.5281/zenodo.15158894
title: Table 1 in A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan

description: Table 1. Frequency comparisons of selected meristic characters among Parascorpaena aurita, P. mossambica and P. poseidon sp. nov.
Pectoral-fin rays (one side/other side)Pored lateral-line scales15/1515/1616/1616/1717/1717/18181920212223242526P. aurita2151421P. mossambica152511187752P. poseidon sp. nov.18 H15 H311Longitudinal scale rows303132333435363738394041424344454647P. aurita12131P. mossambica212112374531P. poseidon sp. nov.3 H3211Scales above / below lateral line4567/9101112131415161718P. aurita153112112P. mossambica519811211571311P. poseidon sp. nov.136 H325 HScales rows between last dorsal-fin spine base and lateral lineScales rows between 6th dorsal-fin spine base and lateral line67891011126789101112P. aurita323341P. mossambica631581251212P. poseidon sp. nov.36 H12 H53Gill rakers on hypobranchialTotal gill rakers01231011121314151617P. aurita2511214P. mossambica198611094531P. poseidon sp. nov.72 H63 H
H for the counts of the holotype.
description: Published as part of Chou, Tak-Kei & Liao, Te-Yu, 2022, A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan, pp. 6 in Zoological Studies 61 (9) on page 6, DOI: 10.6620/ZS.2022.61-09, http://zenodo.org/record/8074243
DOI: 10.5281/zenodo.15158899
title: Table 3 in A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan

description: Table 3. Comparison of selected characters among the species of Parascorpaena
Pectoral-fin raysSuborbital Suborbital spines ridgeA distinct black Supraocular Pre-dorsal-fin Coloration blotch on spinous tentacle scales when fresh dorsal-finBody sizeSourcesParascorpaena armata (Sauvage, 1873)152presentN/AN/AN/AN/AN/ASauvage 1873P. aurita (Rüppell, 1838)usually 172presentabsent or weak2–4absentbrownish or Motomura et al. relatively large grayish 2009; this studyP. bandanensis (Bleeker, 1851)152N/AN/AN/AN/AN/AN/ABleeker 1851P. grandisquamis (Ogilby, 1910)163presentwell-developedN/AN/AN/Arelatively largeThis studyP. maculipinnis Smith, 1957163N/Aweak1–2present in maleN/AsmallSmith 1957Fowler 1938;P. mcadamsi (Fowler, 1938)usually 162N/Aweak5present in maleredsmall Motomura et al.2013P. mossambica (Peters, 1855)usually 163presentwell-developedusually 3absentbrownish or relatively large grayishThis studyP. moultoni (Whitley, 1961)152absentabsent2N/Arosy redsmallWhitley 1961P. picta (Cuvier in Cuvier & Valenciennes, 1829)usually 172presentN/AN/AabsentN/Arelatively largeMotomura et al. 2009P. poseidon sp. nov.usually 163absentabsent or weakusually 3absentbrownish or relatively large grayishThis study
N/A, not available.
description: Published as part of Chou, Tak-Kei & Liao, Te-Yu, 2022, A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan, pp. 9 in Zoological Studies 61 (9) on page 9, DOI: 10.6620/ZS.2022.61-09, http://zenodo.org/record/8074243
DOI: 10.5281/zenodo.15158898
title: Table 3 in A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan

description: Table 3. Comparison of selected characters among the species of Parascorpaena
Pectoral-fin raysSuborbital Suborbital spines ridgeA distinct black Supraocular Pre-dorsal-fin Coloration blotch on spinous tentacle scales when fresh dorsal-finBody sizeSourcesParascorpaena armata (Sauvage, 1873)152presentN/AN/AN/AN/AN/ASauvage 1873P. aurita (Rüppell, 1838)usually 172presentabsent or weak2–4absentbrownish or Motomura et al. relatively large grayish 2009; this studyP. bandanensis (Bleeker, 1851)152N/AN/AN/AN/AN/AN/ABleeker 1851P. grandisquamis (Ogilby, 1910)163presentwell-developedN/AN/AN/Arelatively largeThis studyP. maculipinnis Smith, 1957163N/Aweak1–2present in maleN/AsmallSmith 1957Fowler 1938;P. mcadamsi (Fowler, 1938)usually 162N/Aweak5present in maleredsmall Motomura et al.2013P. mossambica (Peters, 1855)usually 163presentwell-developedusually 3absentbrownish or relatively large grayishThis studyP. moultoni (Whitley, 1961)152absentabsent2N/Arosy redsmallWhitley 1961P. picta (Cuvier in Cuvier & Valenciennes, 1829)usually 172presentN/AN/AabsentN/Arelatively largeMotomura et al. 2009P. poseidon sp. nov.usually 163absentabsent or weakusually 3absentbrownish or relatively large grayishThis study
N/A, not available.
description: Published as part of Chou, Tak-Kei & Liao, Te-Yu, 2022, A New Species of Parascorpaena Bleeker, 1876 (Teleostei: Scorpaenidae) from Taiwan, pp. 9 in Zoological Studies 61 (9) on page 9, DOI: 10.6620/ZS.2022.61-09, http://zenodo.org/record/8074243
DOI: 10.5281/zenodo.17898822
title: КОМПЕТЕНТНОСТНАЯ МОДЕЛЬ ОБУЧЕНИЯ ИНОСТРАННОМУ ЯЗЫКУ ПРОФЕССИИ НА ЭТАПЕ МАГИСТРАТУРЫ  (НА ПРИМЕРЕ КУРСА АНГЛИЙСКОГО ЯЗЫКА ДЛЯ ЖУРНАЛИСТОВ)
DOI: 10.5281/zenodo.17898823
title: КОМПЕТЕНТНОСТНАЯ МОДЕЛЬ ОБУЧЕНИЯ ИНОСТРАННОМУ ЯЗЫКУ ПРОФЕССИИ НА ЭТАПЕ МАГИСТРАТУРЫ  (НА ПРИМЕРЕ КУРСА АНГЛИЙСКОГО ЯЗЫКА ДЛЯ ЖУРНАЛИСТОВ)
DOI: 10.25824/redu/y88peo
title: Database of metformin versus insulin in pregnancy: a randomized controlled trial

description: This dataset contains the database of the study "Metformin versus Insulin in pregnancy (MeVIp): A randomized Controlled trial. Database in an Excel spreadsheet of collection carried out with 82 patients who participated in a randomized clinical trial on gestational diabetes treatment, comparing metformin with insulin between 2023 to 2025
DOI: 10.15468/dl.ys3qkm
title: Occurrence Download

description: A dataset containing 3448 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Tracheophyta",
 "DecimalLatitude is greater than or equal to 59.085278",
 "DecimalLatitude is less than or equal to 64.085278",
 "DecimalLongitude is greater than or equal to 135.0",
 "DecimalLongitude is less than or equal to 140.0",
 "HasCoordinate is TRUE",
 "HasGeospatialIssue is FALSE"
 ]
}

 The dataset includes 3448 records from 38 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046979-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.nhbu4v
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{"type":"and","predicates":[{"type":"within","geometry":"POLYGON ((116.401 -1.58082, 116.33071 -1.586385, 116.26215 -1.602946, 116.197006 -1.630092, 116.136882 -1.667158, 116.083258 -1.713231, 116.037453 -1.767176, 116.000596 -1.827667, 115.973594 -1.893213, 115.957114 -1.962203, 115.951561 -2.032937, 115.957075 -2.103674, 115.973521 -2.172673, 116.000495 -2.238233, 116.037334 -2.298741, 116.083133 -2.352705, 116.136764 -2.398797, 116.196905 -2.43588, 116.262076 -2.46304, 116.330672 -2.479609, 116.401 -2.485178, 116.471328 -2.479609, 116.539924 -2.46304, 116.605095 -2.43588, 116.665236 -2.398797, 116.718867 -2.352705, 116.764666 -2.298741, 116.801505 -2.238233, 116.828479 -2.172673, 116.844925 -2.103674, 116.850439 -2.032937, 116.844886 -1.962203, 116.828406 -1.893213, 116.801404 -1.827667, 116.764547 -1.767176, 116.718742 -1.713231, 116.665118 -1.667158, 116.604994 -1.630092, 116.53985 -1.602946, 116.47129 -1.586385, 116.401 -1.58082))"},{"type":"equals","key":"CLASS_KEY","value":"212","matchCase":false},{"type":"greaterThanOrEquals","key":"YEAR","value":"2015","matchCase":false},{"type":"not","predicate":{"type":"in","key":"BASIS_OF_RECORD","values":["MATERIAL_CITATION","MATERIAL_SAMPLE","PRESERVED_SPECIMEN"],"matchCase":false}},{"type":"lessThanOrEquals","key":"COORDINATE_UNCERTAINTY_IN_METERS","value":"10000","matchCase":false},{"type":"equals","key":"LICENSE","value":"CC BY 4.0","matchCase":false}]}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046980-251120083545085/datasets/export for details.
DOI: 10.5286/isis.e.rb2520552-1
title: Strain, stress and damage evolution in alloys during cyclic loading considering interplay of microstructure, surface hardening and overload

description: Engineering components are frequently subjected to random cyclic loading and occasional stress overloads during service, significantly affecting fatigue behavior. The resulting stress and strain evolution is further complicated by interactions between surface hardening treatments and microstructure. To optimize fatigue performance and durability, especially in components such as automotive gears, a detailed understanding of these interactions is essential. This proposal aims to use neutron Bragg edge imaging (BEI) to investigate the evolution of localized strain and phase distributions in surface-hardened steels under cyclic loading, including overload effects. The study will focus on 20MnCr5 case-hardened steel specimens provided by Ovako and used by Scania, examined in the as-treated state, after 1000 and 2000 fatigue cycles, and after an overload followed by 1000 cycles. BEI will capture strain and phase changes, particularly retained austenite content, across the surface using a high-resolution Timepix 2 detector. A total of 18 measurements will be conducted, covering various surface treatments and loading histories. The resulting data will clarify how retained austenite transforms under loading and how it influences local stress concentrations and fatigue crack resistance. These insights will guide the design of microstructures and surface treatments for enhanced fatigue life and lightweighting of critical steel components.