Results 51 to 60 of about 15,750 (147)

Energy efficiency optimization analysis of a ground source heat pump system based on neural networks and genetic algorithms

Geothermal Energy
This paper reports on the performance of a ground source heat pump (GSHP) system located in Shandong Province, China. The system operation data were monitored and collected by a data collection system.
Shanming Wei, HaiBo Wang, YanFa Tian, Xubo Man, Yanshi Wang, ShiYu Zhou   +5 more
doaj   +1 more source

Analysis and Experimental Study on the Internal Flow Performance of Deep-Sea Biological Pumping Sampler

Chinese Journal of Mechanical Engineering
To accurately acquire deep-sea live biological samples, a hydraulic suction macro-biological pressure-retaining sampler (HSMPS) was designed to achieve active capture of seafloor biological by a suction pump.
Guangping Liu, Yongping Jin, Youduo Peng, Deshun Liu, Buyan Wan   +4 more
doaj   +1 more source

Spatial–temporal differentiation law of habitat quality and its driving mechanism in the typical plateau areas of the Loess Plateau in the recent 30 years

Open Geosciences
The Dongzhi Plateau, the largest remaining loess tableland on the Chinese Loess Plateau, is a critical region within the Yellow River Basin, and its ecological health is vital for regional ecological security and sustainable development.
Zhao Xingping, Li Wendong, Wang Peng, Liu Mengmeng, Jiang Chengcheng, Yu Ningyu   +5 more
doaj   +1 more source

Oil-Water Biphasic Metal-Organic Supramolecular Gel for Lost Circulation Control: Formulation Optimization, Gelation Mechanism, and Plugging Performance

Gels
Lost circulation in oil-based drilling fluids (OBDFs) remains difficult to mitigate because particulate lost circulation materials depend on bridging/packing and gel systems for aqueous media often lack OBDF compatibility and controllable in situ sealing.
Qingwang Li, Songlei Li, Ye Zhang, Chaogang Chen, Xiaochuan Wu, Menglai Li, Shubiao Pan, Junfei Peng   +7 more
doaj   +1 more source

An Energy-Efficient Fault Diagnosis Method for Subsea Main Shaft Bearings

Journal of Marine Science and Engineering
Main shaft bearings are among the critical rotating components of subsea drilling rigs, and their health status directly affects the efficiency and reliability of the drilling system. However, in the high-pressure liquid environment of the deep sea, with
Jiawen Hu, Jingbao Hou, Tenglong Yang, Yixi Zhang, Zhenghua Chen   +4 more
doaj   +1 more source

Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

AIP Advances
In engineering surveys, conventional SH-wave seismic exploration methods exhibit limited resolution for detecting small-scale shallow anomalies, often failing to meet practical requirements.
Xu Sun, Wei Xu, Yingju Xiong, Yong Li, Xiaoqing Song   +4 more
doaj   +1 more source

Research status and analysis of deep-sea metal mining equipment and technologies

Meitan xuebao
Metal mineral resources are critical materials for the world economic development. In a situation of weak supply of terrestrial rare metals, many countries are expanding the direction of resource extraction from a land-based approach to a land-sea ...
Yongping JIN, Xiangyang DONG, Buyan WAN, Deshun LIU   +3 more
doaj   +1 more source

Implicit 3D geological modeling method based on expert knowledge constraints: A case study from the Songshugang Mining District, Hengfeng County, Jiangxi Province, China. [PDF]

PLoS One
Jin W, Wu Z, Xu Z, Li H, Li B, Guo F, Zhang Z, Ma F, Li H, Lu P.   +9 more
europepmc   +1 more source

Quantitative Characterization of Micropore Structure and Seepage Characteristics of Diagenetic Facies and Their Implications for Development in the Highly Inhomogeneous Chang 9 Reservoir, Ordos Basin. [PDF]

ACS Omega
Gu X, Ma J, Pu J, Liu Y, Xu H, He Y, Huang F.   +6 more
europepmc   +1 more source

Gallium Abundance and Isotope Geochemistry in Coal and Mudstone from the Huainan-Huaibei Coalfield: Implications for Geological Processes and Resource Utilization. [PDF]

ACS Omega
Wang C, Liu H, Wu D, Zhao S, Hu G, Liu W, Luo H.   +6 more
europepmc   +1 more source