Results 81 to 90 of about 139,472 (275)

3D Stretchable Arch Ribbon Array Fabricated via Grayscale Lithography. [PDF]

, 2016
Microstructures with flexible and stretchable properties display tremendous potential applications including integrated systems, wearable devices and bio-sensor electronics.
Deng, Ningqin, MABOUDIAN, Roya, Mohammad, Mohammad, Pang, Yu, Ren, Tian-Ling, Shavezipur, Mohammad, Shu, Yi, Wang, Xuefeng, Yang, Yi, Zhao, Haiming   +9 more
core   +2 more sources

Study on Roof Breakage-Induced Roadway Coal Burst in an Extrathick Steeply Inclined Coal Seam

Shock and Vibration, 2019
In view of the coal burst induced by roof breakage in the steeply inclined coal seam (SICS) roadway and its mechanism, a mechanical model was established to investigate the distribution of dynamic and static stresses in the coal seam before and after the
Sheng-chuan Wang, Lin-ming Dou, Zong-long Mu, Jin-rong Cao, Xu-wei Li   +4 more
doaj   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Zoological results of a tour in the far east : Polyzoa Entoprocta and Ctenostomata [PDF]

, 2009
The Polyzoa discussed or described in this paper are all from fresh or brackish water. The majority are from the Tale Sap in the north-eastern part of the Malay Peninsula} but a few come from the Tai-Hu in the Kiangsu Province of China.
Annandale, Nelson
core  

Failure characteristics analysis of the inclined interlayer during water‐soluble cavity construction of underground salt caverns for large‐scale energy storage

Deep Underground Science and Engineering, EarlyView.
In the process of water‐soluble cavern construction of salt cavern energy storage, since the interlayer does not dissolve in water easily, sudden collapse will cause engineering accidents such as bending and damage of the inner tube of the cavern.
Zenghui Zhao, Tianyu Li, Qing Ma, Junlong Shang, Jiaze Du, Ruizhe He   +5 more
wiley   +1 more source

Soft-Shelled Turtles (Trionychidae) from the Bissekty formation (Upper Cretaceous: Turonian) of Uzbekistan: Skull-Based Taxa and Probable Skull-Shell Associations [PDF]

, 2013
In this paper we describe previously unpublished trionychid turtle material, consisting of skull fragments, from the Late Cretaceous (late Turonian) Bissekty Formation of the Dzharakuduk locality in Uzbekistan.
Danilov, Igor G., Vitek, Natasha S.
core   +1 more source

An Innovative Approach for Gob-Side Entry Retaining With Thick and Hard Roof: A Case Study

Tehnicki vjesnik - Technical Gazette, 2018
An innovative roadway layout in a Chinese colliery based on gob-side entry retaining (GER) with thick and hard roof (THR) was introduced. Suspended roof is left with a large area in GER with THR, which leads to large area roof weighting (LARW). LARW for GER with THR and mechanism of shallow-hole blasting to force roof caving in GER were expounded.
Zhang, Zizheng, Wang, Weijun, Li, Shuqing, Bai, Jianbiao, Hao, Shengpeng, Wu, Hai, Yu, Xianyang   +6 more
openaire   +4 more sources

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Research Anti‐Impact Mechanism of Roof Presplitting Blasting in Deep Composite Thick and Hard Key Strata

Shock and Vibration
As an important means to control the hard roof, presplitting blasting is the main measure for controlling rock burst disaster in the key strata of the deep mine in the west. Taking the typical thick and hard key layer, Menkeqing Coal Mine as the analysis object, the mechanical and FLAC3D numerical models of roof presplitting blasting energy release are
Xiaoqi Hao, Gang Han, Hu Liu, Jiahao Xie, Yawu Shao, Yin Zhang, Jinglong Cao, Qian Zhao   +7 more
openaire   +2 more sources

Fracture Instability Law of Thick Hard Direct Covering Roof and Fracturing and Releasing Promotion Technology

Applied Sciences
Because of its strong bearing capacity and large size, a thick and hard roof is the main source of strong ground pressure in a stope, and its breaking and migration mechanism and effective control are very important for realizing safe and efficient ...
Xingping Lai, Chuan Ai, Helong Gu, Hao Wang, Chong Jia   +4 more
doaj   +1 more source