Results 41 to 50 of about 10,412 (262)
Mathematics, 2022 Measuring the straightness of the scraper conveyor, which is an indispensable piece of equipment in a fully mechanized coal face, can prevent accidents such as derailment of the shearer and is also important for the precise positioning of the shearer and
Jiakun Lv +6 more
doaj +1 more source
Best Practices in Second Stage Labor Care: Maternal Bearing Down and Positioning [PDF]
, 2007 Despite evidence of adverse fetal and maternal outcomes from the use of sustained Valsalva bearing down efforts, current second-stage care practices are still characterized by uniform directions to “push” forcefully upon complete dilatation of the cervix
American College of Obstetricians and Gynecologists +8 more
core +2 more sources
Digital twin: meeting the technical challenges of intelligent fully mechanized working face
Gong-kuang zidonghua, 2022 The goal and task of intelligent fully mechanized working face are to independently complete the reliable coal cutting of the fully mechanized working face, maintain the geometric relationship of the working face and reliable roof support.
GE Shirong +6 more
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Meikuang Anquan, 2022 Aiming at the problem of straightness detection of scraper conveyor in fully mechanized mining face, the straightness detecting method of a scraper conveyor based on combined inertial navigation is proposed.
YANG Bo, WU Ning
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Energies, 2022 For effective mining, it is essential to ensure that the picks are positioned correctly on the working unit of a mining machine. This is due to the fact that the design of roadheader cutting heads/drums using computer-aided tools is based on the ...
Piotr Cheluszka, Amadeus Jagieła-Zając
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GPS source solution of the 2004 Parkfield earthquake [PDF]
, 2014 We compute a series of finite-source parameter inversions of the fault rupture of the 2004 Parkfield earthquake based on 1 Hz GPS records only. We confirm that some of the co-seismic slip at shallow depth (
Dreger, D., Houlie, N., Kim, A.
core +2 more sources
Coal-rock interface detector [PDF]
, 1979 A coal-rock interface detector is presented which employs a radioactive source and radiation sensor. The source and sensor are separately and independently suspended and positioned against a mine surface of hydraulic pistons, which are biased from an air
Crouch, C. E., Jones, E. W., Rose, S. D.
core +1 more source
COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells
Molecular Oncology, EarlyView.This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos +6 more
wiley +1 more source
Gong-kuang zidonghua, 2019 In view of problem that existing mechanical compensation methods of lever arm effect ca't get angular acceleration information in real time, an improved method of lever arm effect error compensation was proposed on the basis of analyzing cause of lever ...
SI Zhuoyin, LI Wei, TONG Junling
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IEEE Access, 2020 Accurate positioning of the shearer remains a challenge for automation of the longwall coal mining process. In this paper, the popular Ultra-wideband (UWB) positioning system that has attracted considerable attention is adopted to obtain the target node ...
Bo Cao +4 more
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