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810 results on '"Guo Jianying"'

218. Determination of soil-groundwater systems recharge mechanism in the middle Inner Mongolia Plateau by isotopic tracers

Author

Long Yinhui, Xiaomin Xu, Liang Wentao, Han Zhenhua, Zilong Liao, Zhang Yanfei, Yongfu Wei, and Guo Jianying

Subjects
Hydrology, Global and Planetary Change, δ18O, 0208 environmental biotechnology, Soil Science, Geology, 02 engineering and technology, Groundwater recharge, 010501 environmental sciences, 01 natural sciences, Pollution, 020801 environmental engineering, Water resources, Soil water, Meteoric water, Environmental Chemistry, Soil horizon, Environmental science, Precipitation, Groundwater, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology
Abstract

The steppe located in the middle Inner Mongolia Plateau (IMP) has scarce water resources and fragile ecosystems and has an arid-semiarid monsoon characterized by low and uneven seasonal precipitation and high evaporation. Until now, problems relating to the hydrologic processes in the area remain poorly understood, and thus strategies for the exploitation and utilization of the area’s local water resource remain limited. This study aimed to investigate the recharge and discharge processes of soil water and the source and circulation of groundwater through geochemical methods. The local meteoric water line (LMWI) of our study area in the middle IMP was first proposed and compared with the local meteoric water line of Baotou in Inner Mongolia and Ulan Bator. The δ18O and δD values of precipitation showed an increasing trend from June to August and decreasing trend from August to late October. The H and O isotopes of soil water varied with time, location, and soil profile depth. Besides the geographical and climatic factors, the Cl concentrations of soil water can be affected remarkably by land use type and land cover change. In our monitoring period, variations in the Cl concentrations and δ18O and δD values of shallow soil water indicated that the evaporation of soil water was in the sequence August > June > October. Furthermore, the detailed evaporation proportions of soil water were estimated. The isotope compositions of groundwater plotted on the LMWI and there could be a rapid recharge mechanism of the groundwater.

Published
2020

221. New progresses in basic geological theories and future exploration domains of natural gas in China

Author

Xiaobo Wang, Zengye Xie, Jian Li, Guoqi Wei, Wei Ma, Aisheng Hao, Wei Yang, Li Zhisheng, Jun Li, Wang Yifeng, and Guo Jianying

Subjects
020209 energy, Geochemistry, Energy Engineering and Power Technology, 02 engineering and technology, 010502 geochemistry & geophysics, 01 natural sciences, chemistry.chemical_compound, Natural gas, 0202 electrical engineering, electronic engineering, information engineering, Kerogen, Foreland basin, 0105 earth and related environmental sciences, geography, geography.geographical_feature_category, lcsh:Gas industry, business.industry, lcsh:TP751-762, Process Chemistry and Technology, Geology, Geotechnical Engineering and Engineering Geology, Volcanic rock, Natural gas field, Craton, chemistry, Modeling and Simulation, Carbonate rock, business, Oil shale
Abstract

As natural gas exploration expands to deep, ultra-deep and unconventional areas, more and more complex exploration targets are encountered. In this circumstance, it is necessary to improve the existing basic natural gas geological theories for guiding the exploration and discovery of more giant gas fields. In this paper, the researches on basic natural gas geological theories since the beginning of the 12th Five-Year Plan were engaged, and then the key exploration target zones were analyzed. Some results were obtained. (1) The theory of whole-process hydrocarbon generation of organic matters was improved and the geologic theories of organic matter hydrocarbon generation (e.g. the thermal evolution model of kerogen degradation and the successive gas generation of organic matters) were developed. (2) Multi-element natural gas genesis identification method, quantitative evaluation method for different types of seals/caprocks, tight sandstone gas accumulation theory for low hydrocarbon generation intensity region, and hydrocarbon accumulation theory for giant ancient carbonate gas field were established, and the geological theories of gas generation, genesis identification and hydrocarbon accumulation were developed to provide the effective guidance for the exploration breakthrough and discovery of giant gas fields in the key basins of China recently. Four conclusions were reached: (1) ancient carbonate rock, tight sandstone, foreland region, shale and volcanic rock are primary exploration targets for discovering giant gas fields; (2) craton and foreland basins are still the key exploration areas, and ancient uplift, gentle slope and thrust belt are the main enrichment zones; (3) ancient strata and deep formations are critical gas exploration targets in the future; (4) oil cracking gas in marine basins, tight sandstone gas and shale gas are the important replacement resources for future gas reserves and production growth. Keywords: Natural gas, Basic geological theory, New progress, Exploration domain, Ancient carbonate rock, Tight sandstone, Craton, Foreland basin, Giant gas field

Published
2018

223. Toxic effects of copper on the jejunum and colon of pigs: mechanisms related to gut barrier dysfunction and inflammation influenced by the gut microbiota

Author

Liao, Jianzhao, primary, Li, Quanwei, additional, Lei, Chaiqin, additional, Yu, Wenlan, additional, Deng, Jichang, additional, Guo, Jianying, additional, Han, Qingyue, additional, Hu, Lianmei, additional, Li, Ying, additional, Pan, Jiaqiang, additional, Zhang, Hui, additional, Chang, Yung-Fu, additional, and Tang, Zhaoxin, additional

Published
2021
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235. Electrocardiographic QRS voltage amplitude improvement by intramyocardial radiofrequency ablation in patients with hypertrophic obstructive cardiomyopathy and one year follow up

Author

Zuo, Lei, primary, Hsi, David H., additional, Zhang, Li, additional, Zhang, Qin, additional, Shao, Hong, additional, Liu, Bing, additional, Lei, Changhui, additional, Ye, Chuang, additional, Meng, Xin, additional, Zhang, Guoqing, additional, Zhou, Mengyao, additional, Li, Jing, additional, He, Yang, additional, Guo, Jianying, additional, and Liu, Liwen, additional

Published
2020
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245. Impacts of the Plateau Environment on the Gut Microbiota and Blood Clinical Indexes in Han and Tibetan Individuals

Author

Jia, Zhilong, primary, Zhao, Xiaojing, additional, Liu, Xiaoshuang, additional, Zhao, Le, additional, Jia, Qian, additional, Shi, Jinlong, additional, Xu, Xiao, additional, Hao, Lijun, additional, Xu, Zhenguo, additional, Zhong, Qin, additional, Yu, Kang, additional, Cui, Saijia, additional, Chen, Huining, additional, Guo, Jianying, additional, Li, Xiang, additional, Han, Yang, additional, Song, Xinyu, additional, Zhao, Chenghui, additional, Bo, Xiaochen, additional, Tian, Yaping, additional, Wang, Weidong, additional, Xie, Guotong, additional, Feng, Qiang, additional, and He, Kunlun, additional

Published
2020
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