Results 71 to 80 of about 6,313,283 (262)

Transport von Mikroorganismen in einem Karstaquifer am Beispiel der Lützelquelle [PDF]

, 2004
Karst terrains cover about 25% of the earth’s surface and karst aquifers are estimated to provide about a quarter of the world’s population with potable water.
Auckenthaler, Adrian Georg
core   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Genome-wide analysis of transmembrane 9 superfamily genes in wheat (Triticum aestivum) and their expression in the roots under nitrogen limitation and Bacillus amyloliquefaciens PDR1 treatment conditions

Frontiers in Plant Science
IntroductionTransmembrane 9 superfamily (TM9SF) proteins play significant roles in plant physiology. However, these proteins are poorly characterized in wheat (Triticum aestivum).
Fei Li, Kuanling Xi, Yuke Li, Tang Ming, Yufeng Huang, Lijun Zhang   +5 more
doaj   +1 more source

Study on ecological restoration strategy of karst spring region in north China:Taking Jinci spring as an example

Carsologica Sinica, 2022
In northern China, karst is widely distributed and rich in karst spring water resources. It is a high-quality water supply source for industry, agriculture and residents’ life in karst areas.
Yanxin WANG
doaj   +1 more source

Atlas of karst area based on Web GIS technology

, 2008
Modern GIS (Web-Geographic Information System) technologies have significant applications for earth sciences. One example is the Internet Atlas of Karst. A karst area of high-mountain character was selected. The Internet Atlas of Karst was prepared using
Litwin, Leszek
core   +1 more source

Post‐Stimulation Hydraulic Response and Productivity Constraints of a Low‐Productivity Carbonate Geothermal Well in the Small Intramontane Basin, Beijing Piedmont, North China

Energy Science &Engineering, EarlyView.
Formed ~1.4 Ga, the carbonate reservoir of the Jixian System is a key geothermal reservoir in northern China. Differential basin–mountain evolution since the Cenozoic led to distinct reservoir‐forming histories; consequently, this same reservoir shows marked productivity contrasts between intramontane basins and the large rift Bohai Bay Basin ...
Chuanqing Zhu, Kefu Li, Wansen Yao, Wanqing Geng, Yonghui Huang, Shu Jiang, Nansheng Qiu   +6 more
wiley   +1 more source

Characteristics and Connectivity Analysis of Hidden Karst in Jurong Pumped Storage Power Station Area, China

, 2023
Based on the hidden karst exposed in Jurong Pumped Storage Power Station, combined with the field exploration data, the temporal and spatial development characteristics of hidden karst in the power station area are analyzed using the methods of specific ...
Wenjie Yang, Yong Huang, Liqiang Chen, Kehan Miao, Xiaosong Dong   +4 more
core   +1 more source

Bryozoan‐Rich Carbonate Units of the Erfoud Area (SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

Geological Journal, EarlyView.
In this study, we re‐examine the depositional architecture of the Erfoud limestone in Morocco. Introducing new biostratigraphic constraints from chitinozoan assemblages, we show that Katian to Hirnantian bryozoan‐pelmatozoan meadows reflect flooding events linked to a series of interglacial transgressions known to have occurred immediately prior to the
Philippe Razin, Jean‐François Ghienne, Amira Meddour, Lorena Tessitore, Thijs R. A. Vandenbroucke   +4 more
wiley   +1 more source

Chalcone-Synthase-Encoding RdCHS1 Is Involved in Flavonoid Biosynthesis in Rhododendron delavayi

Molecules
Flower color is an important ornamental feature that is often modulated by the contents of flavonoids. Chalcone synthase is the first key enzyme in the biosynthesis of flavonoids, but little is known about the role of R.
Ju Huang, Xin Zhao, Yan Zhang, Yao Chen, Ximin Zhang, Yin Yi, Zhigang Ju, Wei Sun   +7 more
doaj   +1 more source

Characteristics, Distribution, and Source Analysis of the Main Persistent Toxic Substances in Karst Groundwater at Jinan in North China

Journal of Chemistry, 2020
Karst water in northern China is an important water source for economic and social development in its distribution area and water source for ecological function guarantee.
Hao Shang, Xiaofan Qi, Mengnan Zhang, Hu Li, Gang Li, Lizhi Yang   +5 more
doaj   +1 more source