Results 31 to 40 of about 37,255 (261)

Material Preparation and Geotechnical Properties of Transparent Cemented Soil for Physical Modeling

Frontiers in Materials, 2021
The preparation of transparent materials suitable for simulating different rock and soil masses is the foundation for image-based physical modeling tests in studying deformation and failure mechanisms in geotechnical media.
Xianlun Leng, Xianlun Leng, Chuan Wang, Chuan Wang, Rong Pang, Qian Sheng, Qian Sheng, Jian Chen, Jian Chen   +8 more
doaj   +1 more source

Converging seasonal prevalence dynamics in experimental epidemics [PDF]

, 2011
Background Regular seasonal changes in prevalence of infectious diseases are often observed in nature, but the mechanisms are rarely understood. Empirical tests aiming at a better understanding of seasonal prevalence patterns are not feasible for most
Ebert, Dieter, Dieter Ebert, Hottinger, J. W., Ebert Dieter, Jürgen W Hottinger, Fabbro, Thomas, Sandra Lass, Lass Sandra, Fabbro, T., Lass, Sandra, Hottinger Jürgen W, Lass, S., Thomas Fabbro, Fabbro Thomas, Hottinger, Jürgen W.   +14 more
core   +1 more source

Origin and depositional environments of source rocks and crude oils from Niger Delta Basin: Carbon isotopic evidence

China Geology, 2020
: Thirty-nine crude oils and twenty-one rock samples from Niger Delta Basin, Nigeria have been characterized based on their isotope compositions by elemental analysis-isotope ratio mass spectrometry and gas chromatography-isotope ratio mass spectrometry.
Abiodun B Ogbesejana, Oluwasesan M Bello, Tijjani Ali   +2 more
doaj   +1 more source

Soil wind erosion resistance analysis for soft rock and sand compound soil: A case study for the Mu Us Sandy Land, China

Open Geosciences, 2022
Mixtures of soft rock and sand have been applied extensively in the Mu Us Sandy Land (MUSL, also known as the Mu Us Desert) to limit the loss of top soil by wind erosion.
Wang Huanyuan, Tong Wei, Liu Jinbao, Han Jichang, Liu Siqi   +4 more
doaj   +1 more source

Study of evaluation of economic rock-mixed ratio of longwall top-coal caving working face based on entropy weight-extension theory

Meitan kexue jishu
The rock-mixed ratio of top-coal caving mining significantly affects the coal quality and economic benefits. This ratio at longwall top-coal caving (LTCC) faces is jointly determined by multiple factors, including geological conditions, extracting and ...
Shen WANG, Ruixiang LI, Dongyin LI, Peng LYU, Ru FENG, Hongbin LI, Wen WANG   +6 more
doaj   +1 more source

Development of Modified Grouting Material and Its Application in Roadway Repair Engineering

Geofluids, 2021
It is very extraordinary for the success of coal mine roadway grouting with the following factors of high early strength, good fluidity, and convenient pumping, but the existing grouting materials make it difficult to achieve the above characteristics at
Yang Yu, Zhengyuan Qin, Xiangyu Wang, Lianying Zhang, Dingchao Chen, Siyu Zhu   +5 more
doaj   +1 more source

Mechanical evaluation and optimal mixing ratios in co-disposal of phosphate mining tailings and waste rock

Scientific Reports
Abstract Given the complexity of the behavior of mining tailings dams built by the technique of hydraulic embankments and the recurring dam ruptures globally, especially in Brazil, ensuring enhanced safety through advanced disposal techniques becomes crucial.
Gabriel Gomes Silva, Rafael Cerqueira Silva   +1 more
openaire   +3 more sources

Prediction of rock mixed ratio in image-based intelligent control of caving door in longwall top coal caving face part Ⅱ: inside rock mixed ratio of coal flow

Meitan xuebao
The main task of image-based intelligent control of caving door in longwall top coal caving face is to monitor the rock mixed ratio of coal flow by analyzing the image, and then determine the closing time of caving door.
Jiachen WANG, Shengli YANG, Lianghui LI, Xin ZHANG, Yongsheng CHEN, Dongxin HOU   +5 more
doaj   +1 more source

Determining the diet of larvae of western Rock Lobster (Panulirus cygnus) using high-throughput DNA sequencing techniques

, 2012
The Western Australian rock lobster fishery has been both a highly productive and sustainable fishery. However, a recent dramatic and unexplained decline in post-larval recruitment threatens this sustainability.
Waite, A.M., Haruko Takeyama, Peter A Thompson, Lynnath E Beckley, Takeyama, H., Thompson, P.A., Tsai, P., Richard O'Rorke, Anya M Waite, Beckley, L.E., Shane Lavery, Seinen Chow, Andrew G Jeffs, Jeffs, A.G., O'Rorke, R., Lavery, S., Chow, S., Peter Tsai   +17 more
core   +1 more source

Research progress on intelligent coal caving theory and technology

Gong-kuang zidonghua
The longwall top-coal caving technology is an effective method for extracting thick and ultra-thick coal seams, and it has become a hallmark technology in China's coal mining industry.
WANG Jiachen, YANG Shengli, LI Lianghui, ZHANG Jinwang, WEI Weijie   +4 more
doaj   +1 more source