Showing 2,481 - 2,500 results of 2,575 for search '"rock ', query time: 0.09s Refine Results
  1. 2481

    Evidence of Tectonic Control on the Geochemical Features of the Volatiles Vented along the Nebrodi-Peloritani Mts (Southern Apennine Chain, Italy) by Francesco Italiano, Pietro Bonfanti, Salvatore Roberto Maugeri

    Published 2019-01-01
    “…The 3He/4He isotopic ratio in the range of 0.7-2.8 Ra highlights variable contributions of mantle-derived helium, representing an unusual feature for the crustal regime of the study areas characterized by the widespread presence of 4He-producer metamorphic rocks. The degassing of mantle helium is coherent with the tectonics and related to the NW-SE extensional regime of the Calabro-Peloritan Arc (CPA). …”
    Get full text
    Article
  2. 2482

    Research on Recognition of Quiet Period of Sandstone Acoustic Emission Based on Four Machine Learning Algorithms by Dong Duan, Xiaojing Feng, Ruizhe Zhang, Xiaoyu Chen, Hongzhi Zhang

    Published 2022-01-01
    “…Aiming at solving the problem that it is difficult to recognize the quiet period of acoustic emission in rocks, four machine learning algorithms were adopted to develop and improve the recognition method of the quiet period of acoustic emission. …”
    Get full text
    Article
  3. 2483

    Clean Eco-Friendly Cooking Energy as Sustainable Approach and Mitigation to Climate Change: A Case Study of Ankole, Western Uganda. by Kayamba, William Kariiti

    Published 2023
    “…Charcoal has become a major fuel for cooking in many homes as an alternative to firewood, in addition to briquettes, biogas, LPG and volcanic rocks. A sustainable eco-friendly stove is proposed to mitigate environmental degradation.…”
    Get full text
    Article
  4. 2484

    Status and New Data of the Geochemical Determination of the pp-Neutrino Flux by LOREX by M. K. Pavićević, F. Bosch, G. Amthauer, I. Aničin, B. Boev, W. Brüchle, V. Cvetković, Z. Djurčić, W. F. Henning, R. Jelenković, V. Pejović, A. Weiss

    Published 2012-01-01
    “…To get the mean solar neutrino flux itself, four problems have to be addressed: (1) the geological age of lorandite, (2) the amount of background cosmic-ray-induced 205Pb atoms which strongly depends on the erosion rate of the lorandite-bearing rocks, (3) the capture probability of solar neutrinos by 205Tl and (4) the extraction of lorandite and the appropriate technique to “count” the small number of 205Pb atoms in relation to the number of 205Tl atoms. …”
    Get full text
    Article
  5. 2485

    Terahertz Absorption Spectroscopy of Benzamide, Acrylamide, Caprolactam, Salicylamide, and Sulfanilamide in the Solid State by Ye Jiang, Fengshan Zhou, Xiaodong Wen, Limin Yang, Guozhong Zhao, He Wang, Haiyan Wang, Yanjun Zhai, Jinguang Wu, Kexin Liu, Jia’er Chen

    Published 2014-01-01
    “…These bands in the THz region may be related to torsion, rocking, wagging, and other modes of different groups in the molecules.…”
    Get full text
    Article
  6. 2486

    Experimental Study on the Mechanical Properties and Seepage Characteristics of Red Sandstone with a Single Persistent Joint under Triaxial Compression by Wei Wang, Shifan Liu, Chong Shi, Shanxi Zheng, Qizhi Zhu

    Published 2021-01-01
    “…Besides, to investigate the effects of the pore pressure on seepage characteristics of rocks with joint angles at 0°, 45°, and 90°, a series of triaxial compression drainage tests on the jointed red sandstone were performed. …”
    Get full text
    Article
  7. 2487

    Chromosome-scale telomere to telomere genome assembly of common crystalwort (Riccia sorocarpa Bisch.) by Katarzyna Krawczyk, Joanna Szablińska-Piernik, Łukasz Paukszto, Mateusz Maździarz, Paweł Sulima, Jerzy Andrzej Przyborowski, Monika Szczecińska, Jakub Sawicki

    Published 2025-01-01
    “…., commonly known as common crystalwort, is a plant belonging to the Marchantiales order with a cosmopolitan distribution among a wide range of habitats: fields, gardens, waste ground, on paths, cliff tops, and thin soil over rocks or by water bodies. However, research into the genetic aspects of this species is limited. …”
    Get full text
    Article
  8. 2488

    Tectonic stress of the southeastern part of the Gorny Altai by @Marinin, Anton V., Sim, Lydia A.

    Published 2024-12-01
    “…Data on the stress-strain state of the rocks in the area of the Chuya and Kuray depressions located in the southeastern part of the Gorny Altai were obtained using field tectonophysical methods. …”
    Get full text
    Article
  9. 2489

    Electrokinetic in situ leaching of U from low-permeability uranium ore by Chunguang Li, Wenji Wang, Zhenzhong Liu, Yongmei Li, Qi Liu, Longcheng Liu

    Published 2025-02-01
    “…Various characterization techniques, such as Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDS), three-dimensional computed tomography (CT) pore scanning and Brunauer-Emmett-Teller (BET), showed that the electrokinetic-induced action overcame the preferential flow phenomena, promoted the dissolution of the target minerals and gangue rocks, and notably improved the pore structure to ultimately enhance the uranium leaching efficiency. …”
    Get full text
    Article
  10. 2490

    Finite Element Method Using a Characteristic-Based Split for Numerical Simulation of a Carbonate Fracture-Cave Reservoir by Liehui Zhang, Yuhui Zhou, Lei Zhao, Deliang Zhang

    Published 2015-01-01
    “…Fracture-cave carbonate reservoirs occur widely in source rocks and are prospects for exploitation worldwide. …”
    Get full text
    Article
  11. 2491

    Examining Gravettian and Magdalenian mobility and technological organization with IR spectroscopy by Benjamin Schürch, Nicholas J. Conard, Patrick Schmidt

    Published 2025-01-01
    “…These analyses are based on differences and similarities in the mineralogy and crystallography of rocks. Using this method, we test for long-distance raw-material transport between the sites of the Swabian Jura and the Freiburg basin, 200 km to the south-west, and the region of the Altmühl Valley, 150 km to the north-east. …”
    Get full text
    Article
  12. 2492

    Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy by Wang Jingfu, Chen Jingan, Dai Zhihui, Yang Haiquan, Ma Chenyan

    Published 2016-01-01
    “…The results showed that sedimentary S in Qinghai Lake has a high proportion of sulfate averaged 88.9% due to physical weathering of watershed rocks, while deposited S in Taihu Lake has a high fraction of intermediate S (36.5%), which may be the response of the agricultural nonpoint source pollution in drainage basin. …”
    Get full text
    Article
  13. 2493

    Integrative analysis of the Aachen geothermal system (Germany) with an interdisciplinary conceptual model by Esteban Gómez-Díaz, Andrea Balza Morales, Peter A. Kukla, Maren Brehme

    Published 2025-01-01
    “…The model characterizes a non-magmatic, detachment fault-controlled convective thermal system, wherein the reservoir exhibits mixed properties of the mainly Devonian carbonate rocks. NW–SE directed fault lines play a pivotal role in fluid transport, enabling the ascent of thermal waters without the need for additional energy. …”
    Get full text
    Article
  14. 2494

    Hybrid Analytical and Numerical Approach for Modeling Fluid Flow in Simplified Three-Dimensional Fracture Networks by D. Roubinet, S. Demirel, E. B. Voytek, X. Wang, J. Irving

    Published 2020-01-01
    “…Modeling fluid flow in three-dimensional fracture networks is required in a wide variety of applications related to fractured rocks. Numerical approaches developed for this purpose rely on either simplified representations of the physics of the considered problem using mesh-free methods at the fracture scale or complex meshing of the studied systems resulting in considerable computational costs. …”
    Get full text
    Article
  15. 2495

    An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone by Qi-Le Ding, Shuai-Bing Song

    Published 2019-01-01
    “…To study the effects of compression rate and weight ratio of sandstone to mudstone on permeability, water flow tests were performed on crushed rocks using an in-house designed and built water flow apparatus. …”
    Get full text
    Article
  16. 2496

    The First Seismic Imaging of the Holy Cross Fault in the Łysogóry Region, Poland by Eslam Roshdy, Artur Marciniak, Rafał Szaniawski, Mariusz Majdański

    Published 2025-01-01
    “…The Holy Cross Mountains represent an isolated outcrop of Palaeozoic rocks located in the Trans-European Suture Zone, which is the boundary between the Precambrian East European Craton and Phanerozoic mobile belts of South-Western Europe. …”
    Get full text
    Article
  17. 2497

    Introduced substrates trigger colonization by reef-associated fish in a degraded coastal system. by Maryann S Watson, Jon Dickson, Oscar Franken, Laura L Govers, Tjisse van der Heide, Sterre Witte, Britas Klemens Eriksson

    Published 2025-01-01
    “…Six substrates were tested: cockle shells, rocks of two sizes (cobbles and pebbles), wood, artificial reefs of calcium carbonate with shell fragments, and biodegradable structures based on potato starch. …”
    Get full text
    Article
  18. 2498

    Studying the factors affecting the karst zonation and development of Khorin Mountain using Fuzzy Logic. by Amir Saffari, Tayebeh Kiani, Sasan Zangenehtabar

    Published 2019-12-01
    “…Because of the outcrops of carbonate rocks and the presence of other variables, this mass in which there are many springs as karst aquifer outputs is susceptible of Karstification. …”
    Get full text
    Article
  19. 2499

    Vertical Electric Sounding of Leachate Contaminant Plumes at a Dumpsite in Obigbo, Rivers State, Nigeria by W. Tamuno, S. Inichinbia

    Published 2020-01-01
    “…The aquifer is the underlying rocks of sand and gravel that are porous which constitute the water body. …”
    Get full text
    Article
  20. 2500

    Measurements and Design Calculations for a Deep Coaxial Borehole Heat Exchanger in Aachen, Germany by Lydia Dijkshoorn, Simon Speer, Renate Pechnig

    Published 2013-01-01
    “…In summer, cooling the university building uses a climatic control adsorption unit, which requires a temperature of minimum 55°C. The drilled rocks of the 2500 m deep borehole have extremely low permeabilities and porosities less than 1%. …”
    Get full text
    Article