Showing 221 - 240 results of 8,637 for search '"Cave In"', query time: 0.30s Refine Results
  1. 221

    The transcriptomes of cave and surface populations of Gammarus minus (Crustacea: Amphipoda) provide evidence for positive selection on cave downregulated transcripts. by David B Carlini, Daniel W Fong

    Published 2017-01-01
    “…The average level of nucleotide diversity across all transcripts was significantly lower in the cave population. Within the cave population, where the average nucleotide diversity of cave-downregulated transcripts was 75% that of the cave-upregulated transcripts, a highly significant difference, whereas within the spring population the nucleotide diversities of cave-downregulated and cave-upregulated transcripts was virtually identical. …”
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  2. 222

    Multi-annual temperature evolution and implications for cave ice development in a sag-type ice cave in the Austrian Alps by M. Wind, M. Wind, F. Obleitner, T. Racine, C. Spötl

    Published 2022-08-01
    “…<p>Ice caves are, similar to mountain glaciers, threatened by the warming climate. …”
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  3. 223

    Invertebrates diversity in mountain Neotropical quartzite caves: which factors can influence the composition, richness, and distribution of the cave communities? by Marconi Souza Silva, Luiz Felipe Moretti Iniesta, Rodrigo Lopes Ferreira

    Published 2020-02-01
    “…We evaluate how distance, altitude, cave extension, environmental stability, number and size of cave entrances and stream presence can act on species composition and richness. …”
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    Evidence of ancestral nocturnality, locomotor clock regression, and cave zone-adjusted sleep duration modes in a cave beetle by Sonya Royzenblat, Jasmina Kulacic, Markus Friedrich

    Published 2023-02-01
    “…The small carrion beetle Ptomaphagus hirtus is an abundant inhabitant of the exceptionally biodiverse Mammoth Cave system. Previous studies revealed negative phototaxis and the expression of biological clock genes in this microphthalmic cave beetle. …”
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  8. 228

    Research and application of key technology of intelligent coal caving in high gas fully-mechanized top coal caving face by Yao CUI, Jinghong WU, Zhuang YE, Senlang ZHANG

    Published 2023-10-01
    “…At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design and development of follow-up process, and slow response of control system.In order to solve these problems, this paper developed a cloud side collaborative intelligent coal caving control system based on 5G communication.The system includes 5G network, cloud server, edge processor, terminal execution equipment, etc.It has a high data transmission speed, control response speed and data processing capability.Based on the analysis of fully mechanized coal caving process parameters and intelligent coal caving process flow, elaborates the four key technologies of intelligent coal caving the coal gangue identification technology, big block coal identification and coal flow load balance technology, gas safety linkage control technology, and digital twin technology of coal caving following machine.The application test was carried out in Baode 81309 fully mechanized top coal caving face.After the intelligent fully mechanized top coal caving technology was adopted, the top coal recovery rate increased from 86% to 93%, the coal gangue rate decreased from 21% to 15%, the total production efficiency increased by 10%, and the number of coal caving operators decreased from 3 to 4 to 1 to 2.The cloud edge collaborative intelligent coal caving control system based on 5G communication developed in this paper and its key technologies can also be extended to other fully mechanized coal caving faces, which is of great value for reducing personnel and increasing efficiency and safe and efficient mining of coal mines.…”
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    Topographic Survey with Disto x and 3D Representation of the Caves by Laser Grammetry, Case of the AZIZA Cave, Errachidia, Morocco by Hicham Benani, Lalla Amina Ouzzaouit, Larbi Boudad, Hassan Rhinane, Ayoub Nehili, Yahya El Khalki, Nadia Slimani

    Published 2022-04-01
    “…The Moroccan 99,890 km² limestone surface, represents 14% of the total surface which potentially contains a large number of caves, only 3 of them are developed. This under-exploitation is explained by the lack of evaluation of the richness of Morocco’s karst and cave heritage, the topographic maps of Moroccan Caves are poorly carried out or absent, the last inventory of Moroccan Caves dates from 1981.The objective of this study is to represent the AZIZA Cave virtually, appreciate its volume, and optimize the topography of the latter based on 3D technologies. …”
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    The cave-dwelling dipluran (Diplura, Campodeidae) on the edge of the Last Glacial Maximum in Vancouver Island caves, North America (Canada) by Alberto Sendra, Craig Wagnell

    Published 2019-02-01
    “…A new cave-dwelling dipluran of the North American endemic genus Haplocampa is described, coming from a couple of caves excavated in a small limestone karstic area near Port Alberni, Vancouver Island (British Columbia, Canada). …”
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    The magnesium isotope record of cave carbonate archives by S. Riechelmann, D. Buhl, A. Schröder-Ritzrau, D. F. C. Riechelmann, D. K. Richter, H. B. Vonhof, J. A. Wassenburg, A. Geske, C. Spötl, A. Immenhauser

    Published 2012-11-01
    “…For this purpose, a total of six Pleistocene and Holocene stalagmites from caves in Germany, Morocco and Peru and two flowstones from a cave in Austria were investigated. …”
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