Results 21 to 30 of about 778,349 (318)

Experimental study on disaster mechanism of completely weathered granite landslide induced by extreme rainfall

Geoenvironmental Disasters, 2023
Background With the increased frequency of extreme weather, landslides induced by extremely heavy rainfall pose a major threat to human lives and property safety. In July 2020, a landslide occurred in the strongly weathered Laoshan Scenic Spot in Qingdao,
Honghua Liu, Peng Yu, Haitao Lu, Yongjian Xie, Zhongsheng Wang, Shengyou Hao, Hongjun Liu, Yunxia Fu   +7 more
doaj   +1 more source

From Standards of International Law for Outer Space Resources Exploitation to Sustainable Mining [PDF]

, 2023
As space activities continue to develop and increase in number, so do environmental concerns in outer space. For decades now, humanity has continuously sent satellites into Earth orbits without caring for potential environmental consequences in outer ...
LETERRE, Gabrielle Céline Giliane
core  

Analysis of Arch Forming Factors of Shallow Buried Hard Rock Tunnel under Overlying Load

Buildings, 2023
To investigate the arching effect of shallow buried hard rock tunnels under overlying load, the engineering scenario of a subway station on Qingdao Metro Line 6 is utilized. A large-scale tunnel loading model test is conducted, in conjunction with finite
Lixue Cao, Wentai Cui, Zhe Qin, Rui Xu, Tongtong Wang, Yanbing Liu   +5 more
doaj   +1 more source

Experimental Investigation on the Cyclic Shear Mechanical Characteristics and Dynamic Response of a Steel–Silt Interface in the Yellow River Delta

Journal of Marine Science and Engineering, 2023
The shear behavior and dynamic response of a steel–silt interface are significant for the safety and stability of offshore structures in the Yellow River Delta.
Peng Yu, Jie Dong, Yong Guan, Qing Wang, Shixiang Jia, Meijun Xu, Hongjun Liu, Qi Yang   +7 more
doaj   +1 more source

Risk Assessment and Prevention Planning for Collapse Geological Hazards Considering Extreme Rainfall—A Case Study of Laoshan District in Eastern China

Land, 2023
Geological disasters refer to adverse geological phenomena that occur under the influence of natural or human factors and cause damage to human life and property.
Peng Yu, Jie Dong, Hongwei Hao, Yongjian Xie, Hui Zhang, Jianshou Wang, Chenghao Zhu, Yong Guan, Haochen Yu   +8 more
doaj   +1 more source

The Legal Regime of Natural Resources of Celestial Bodies: Current State of the Relevant Russian Laws and Perspectives for a Common BRICS Legal Approach

BRICS Law Journal
In view of the current global outer space-related transformation processes, the legal regime concerning the natural resources of celestial bodies has become one of the most challenging issues to coherently resolve at international and, accordingly ...
A. Vylegzhanin, M. Yuzbashyan, G. Suvorov   +2 more
doaj   +1 more source

Generalised ambiguity function analysis of distributed MIMO synthetic aperture radar

The Journal of Engineering, 2019
The abundant space, time, frequency and code resources of distributed multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) enables it to bring various applications.
Cheng Hu, Zhiyang Chen, Xichao Dong, Chang Cui, Chang Cui, Yuanhao Li   +5 more
doaj   +1 more source

Occurrence rate and duration of space weather impacts on high-frequency radio communication used by aviation

Journal of Space Weather and Space Climate, 2022
High frequency (HF) radio wave propagation is sensitive to space weather-induced ionospheric disturbances that result from enhanced photoionization and energetic particle precipitation.
Fiori Robyn A. D., Kumar Vickal V., Boteler David H., Terkildsen Michael B.   +3 more
doaj   +1 more source

Accessibility of the resources of near Earth space using multi-impulse transfers

, 2010
Most future concepts for exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this mass requires overcoming Earth's natural gravity well, which imposes a distinct obstacle to space-faring.
Colin McInnes, Sanchez, J.P., Joan-Pau Sanchez, McInnes, Colin R.   +3 more
core   +1 more source

Domestic electronic resources space

Библиосфера, 2017
Nowadays libraries evolve online resources in acquisition of their stocks as a measure to fill the gap with printed resources. A variety of numerous Russian publishing electronic products, designed to provide users’ needs, can be desсribed as a general ...
E. I. Kozlova
doaj   +1 more source