Results 11 to 20 of about 283,870 (307)

Complex Surface Deformation of the Coalfield in the Northwest Suburbs of Xuzhou from 2015 to 2020 Revealed by Time Series InSAR

open access: yesCanadian Journal of Remote Sensing, 2021
The coalfield in the northwest suburbs of Xuzhou has suffered from extensive land subsidence; however, the temporal nonlinearity and corresponding spatial variation of its surface deformation has not been adequately explored.
Langping Li   +7 more
doaj   +1 more source

The Manyas fault zone (southern Marmara region, NW Turkey): active tectonics and paleoseismology

open access: yesGeodinamica Acta, 2017
The Manyas fault zone (MFZ) is a splay fault of the Yenice Gönen Fault, which is located on the southern branch of the North Anatolian Fault System. The MFZ is a 38 km long, WNW–ESE-trending and normal fault zone comprised of three en-echelon segments ...
Akın Kürçer   +5 more
doaj   +1 more source

Evaluation of human activity intensity in geological environment problems of Ji’nan City

open access: yesEuropean Journal of Remote Sensing, 2020
Human activity intensity evaluation is the basis of analyzing the impact of human activity on the region. With increasing scale and quantity of human activity, the impact on the ecological environment is also more and more serious.
Kai Peng   +3 more
doaj   +1 more source

Improved calculation of the rigidity of double-row piles and double-beam composite support and displacement analysis under different soil properties

open access: yesShuiwen dizhi gongcheng dizhi, 2022
As a new type of cantilever-type supporting structure, the double-row pile supporting combination system can improve the overall rigidity to maintain the safety and stability of the side of the foundation pit. The case of a double-row pile foundation pit
Fengwu GONG   +5 more
doaj   +1 more source

Determination of Trace Iodine in Soils, Sediments and Rocks by ICP-MS after Pressurized Acid Digestion-Hydroxylamine Hydrochloride Reduction

open access: yesYankuang ceshi, 2019
BACKGROUND Iodine is an active element with many valences. It is easy to transform each other between valence states and its chemical properties are unstable.
REN Dong   +3 more
doaj   +1 more source

Geochemical characteristics of the primary halo in boreholes and prospecting prediction of the Banchang Cu-Mo polymetallic deposit in Henan Province

open access: yes地质科技通报, 2023
The Banchang Cu-Mo polymetallic deposit is located in the middle section of the Zhuyangguan-Xiaguan regional fault, the North Qinling fold belt of the eastern Qinling orogenic belt. It is the first large copper deposit discovered in Henan Province.
Juan Yao   +4 more
doaj   +1 more source

Application of High Pressure Closed Digestion in Pretreatment of Effective Soil Samples

open access: yesYankuang ceshi, 2020
BACKGROUND After the soil sample is extracted by organic acid, there are a lot of organic acids and organic matter in the solution. If these remaining materials are not destroyed, the central tube and rectangular tube of the atomizer are easily plugged ...
REN Dong, CHEN Yu-hao, ZHANG Ting-zhong
doaj   +1 more source

Accumulation and Source Apportionment of Soil Heavy Metals in Molybdenum-Lead-Zinc Polymetallic Ore Concentration Area of Luanchuan

open access: yesYankuang ceshi, 2023
BACKGROUNDThe Luanchuan Mo-Pb-Zn polymetallic ore concentration area, located in Henan Province, China, has a long-term history of mining activities. Heavy metals have been liberated during mining, which induces heavy metal pollution of water and soil ...
Danli CHEN   +6 more
doaj   +1 more source

Study on the zoning of karst development in the Jiaodong Peninsula: Take the Zhongqiao area of Yantai City as an example

open access: yesCarsologica Sinica, 2023
Karst is developed in all provinces of China. In Shandong Province, karst is mainly developed in its southwest part, and is sporadically distributed in the Jiaodong area.
Ning YANG   +6 more
doaj   +1 more source

Distribution Law and Influencing Factors of Molybdenum in Soils and Crops in Luoyang, Henan Province

open access: yesYankuang ceshi, 2021
BACKGROUND Molybdenum is an essential and beneficial element for humans and crops and has an anti-cancer effect. The content of molybdenum and the pH of the soils are different in different regions, the content of molybdenum in crops varies greatly.
XIA Yan   +4 more
doaj   +1 more source

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