Results 101 to 110 of about 16,961 (284)

Quantitative prop support estimation and remote monitor early warning for hard roof weighting at the Muchengjian Mine in China

, 2010
The complex coal seam structure and hard roof at the Muchengjian Mine were studied, and the equivalent tensile strength of the roof was determined by a retrospective analysis of similar roof cave-ins.
Yunliang Tan, Tongbin Zhao, Yaxun Xiao
core   +1 more source

Pressure Control Technology at the Hard Thick Sandstone Roof in an Island Mining Face with a Large Mining Height

, 2020
Fracture of a critical stratum on a coal seam roof may cause strong strata pressure behaviours. In particular, a large-scale sudden fracture of the critical stratum, which is formed by hard thick sandstones on a mining face with a large mining height ...
Min Tu, Tu, Min, Fu*, Baojie, Qingchong Zhao, Baojie Fu*, Zhao, Qingchong   +5 more
core   +1 more source

Poseidon's Sanctuary at Samikon—The Discovery of an Ancient Temple Through an Integrated Geophysical and Geoarchaeological Survey Approach for Lagoonal and Swampy Environments

Archaeological Prospection, EarlyView.
ABSTRACT Below the classical fortress of Samikon at the coast of the western Peloponnese, ancient writer Strabo mentioned a sanctuary of Poseidon which served as the centre of the religious association of the Triphylian cities. In this paper, we describe the discovery and investigation of a building structure by means of geophysical and ...
Dennis Wilken, Birgitta Eder, Sarah Bäumler, Elena Appel, Peter Fischer, Tina Georg, Federica Iannone, Lena Slabon, Timo Willershäuser, Erofili‐Iris Kolia, Andreas Vött   +10 more
wiley   +1 more source

Investigation of Bolt Support Mechanisms and Parameter Optimization for Hard Roof Control in Underground Mining

The control of hard roof conditions in underground coal mining is critical for ensuring mining safety and efficiency. Hard roof control remains a critical challenge in underground mining, particularly affecting mining safety and efficiency.
Jiyu Wang, Longhe Liu, Cong Wang, Xigui Zheng, Wei Xin   +4 more
core   +1 more source

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

, 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).
Weijun Wang, Zhang, Zizheng, Bai, Jianbiao, Hai Wu, Shengpeng Hao, Zizheng Zhang, Wang, Weijun, Li, Shuqing, Hao, Shengpeng, Yu, Xianyang, Shuqing Li, Xianyang Yu, Wu, Hai, Jianbiao Bai   +13 more
core   +1 more source

Investigation on the Ground Pressure Induced by Hard Roof Fracturing at Different Layers during Extra Thick Coal Seam Mining

, 2020
The fracturing of hard roofs in different layers would result in complex ground pressure on the working face, such as supports collapsed and severe roadway deformation.
Tiejun Kuang, Hongjie Liu, Rui Gao, Jingxuan Yang   +3 more
core   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

‘When joy comes your way, you have to grab it!’ Troubling how queer joy features in the lives of LGBT+ school‐attending youth in South Africa

British Educational Research Journal, EarlyView.
Abstract Recently, the concept ‘queer joy’ has gained interest in LGBT+ scholarship in the West. I use this scholarship as an entry point to explore how school‐attending LGBT+ youth express joy and how joy serves as a form of resistance against gender and sexuality norms in educational settings.
Dennis Francis
wiley   +1 more source

The Breaking Span of Thick and Hard Roof Based on the Thick Plate Theory and Strain Energy Distribution Characteristics of Coal Seam and Its Application [PDF]

, 2017
In mining engineering, the thick and hard roof threatens the safe production. Based on Reissner plate theory and combined with weighted residual method, with four edges clamped as the boundary conditions, this paper deduces the theoretical formula of the
Xiaolong Li, Changwu Liu, Yang Liu, Hui Xie   +3 more
core   +1 more source

IMACulate(DE3), an E. coli Strain for High Purity His‐Tagged Protein Purifications

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Immobilised Metal Affinity Chromatography (IMAC) is widely used to purify his‐tagged recombinant proteins from Escherichia coli. However, endogenous contaminants with histidine clusters, such as GFAT and PDH E1 proteins, are often co‐purified with the target protein.
Jia Q. Truong, Dingyi Yu, Nan Hao, Chris Langendorf, Keith. E. Shearwin, Jessica K. Holien   +5 more
wiley   +1 more source