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Few-Shot Learning Method for Continuous Prediction of Rock Mechanical Parameters Based on Logging Data.
ACS Omega
November 2024
Key Laboratory of Unconventional Natural Gas Evaluation and Development in Complex Tectonic Areas, Ministry of Natural Resources, Guiyang 550009, China.
The stratigraphic sequence displays pronounced variations in lithological and physical characteristics along the vertical axis. The acquisition of vertically continuous variations in stratigraphic rock mechanical parameters is essential for the detailed characterization of stratigraphy, particularly in reservoir layers. Moreover, mechanical parameters are essential for the establishment of a rock mechanical stratigraphic framework.
View Article and Find Full Text PDFA Worldwide Annotated Checklist of Fossil (Devonian-Cretaceous) Species of the Clam Shrimp Genus (Branchiopoda: Diplostraca: Spinicaudata).
Life (Basel)
November 2024
Institute of Palaeontology, Yunnan Key Laboratory of Earth System Science, Yunnan Key Laboratory for Palaeobiology, MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China.
Clam shrimps are one of the most common and representative invertebrates in continental strata and are endowed with important biostratigraphic and paleoecological values. The genus is one of the most common clam shrimp taxa that has been recorded in the latest Paleozoic and the Mesozoic around the world. A list of all the species assigned to , recorded from the Devonian to the Cretaceous across all seven continents as of September 2024, is provided.
View Article and Find Full Text PDFPhylogenetic relationships of Neogene hamsters (Mammalia, Rodentia, Cricetinae) revealed under Bayesian inference and maximum parsimony.
PeerJ
November 2024
ISEM, University of Montpellier, CNRS, IRD, Montpellier, France.
There is an ongoing debate about the internal systematics of today's group of hamsters (Cricetinae), following new insights that are gained based on molecular data. Regarding the closely related fossil cricetids, however, most studies deal with only a limited number of genera and statements about their possible relationships are rare. In this study, 41 fossil species from the Late Miocene to the Pliocene, belonging to seven extinct cricetine genera, , , , , , and are analysed in a phylogenetic framework using traditional maximum parsimony and Bayesian inference approaches.
View Article and Find Full Text PDFArticle Synopsis
- The study focuses on shallow groundwater pollution in the Yangtze River Delta, specifically examining elevated ammonium nitrogen (NH-N) and chemical oxygen demand (COD) levels in groundwater.
- Utilizing a range of scientific methods, including onsite sampling and water quality analysis, researchers found that high concentrations of NH-N are primarily due to the geological environment rather than human activities.
- The findings emphasize the importance of understanding geological factors in groundwater quality management and provide valuable insights for environmental policy in similar regions.
A novel method for evaluating shale gas preservation conditions in an area on a regional scale.
Sci Rep
October 2024
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, T6G 2E3, Canada.
The Youjiang Basin is the main area of the Middle Devonian shale gas resources in southern China, with complex geological conditions, diverse stratigraphic structures, low level of exploration and limited hydrocarbon geological data. In this study, a method is proposed for evaluating the regional shale gas preservation conditions, by which it is easy to obtain information (using available data from regional geological maps) and to process data (processed by computer software). This method was applied to the evaluation of the preservation conditions of the Middle Devonian shale gas in the Youjiang Basin.
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