Results 61 to 70 of about 4,720,782 (169)

Research of gas movement law in goaf with parallel double U-shape ventilation mode

Gong-kuang zidonghua, 2014
In order to analyze and master gas distribution and movement law in goaf with parallel double U-shape ventilation mode, a CFD model was established according to characteristics of parallel double U-shape ventilation system of fully mechanized coal mining
HAO Yabing, WANG Fei, WANG Xing, LIU Xiang   +3 more
doaj   +1 more source

Remote fault diagnosis system of fully mechanized mining equipment group based on cloud platform

Gong-kuang zidonghua, 2021
The currently developed remote fault diagnosis systems for fully mechanized mining equipment are mostly for single-machine equipment such as coal shearers, scraper conveyors and belt conveyors, and for expert remote guidance and maintenance systems based
LI Xu, WU Xuefei, TIAN Ye, DONG Bo, DANG Enhui   +4 more
doaj   +1 more source

National Policy Coherence Counts for Reducing Inequality in Global Climate and Development Agendas

Sustainable Development, EarlyView.
ABSTRACT International institutions promote policy coherence as crucial to the effective and fair implementation of global sustainability agendas, though the evidence for its benefits is slim. We present here the first systematic cross‐country dataset on the consequences of national government efforts to promote policy coherence for vulnerable groups ...
Katherine Browne, Adis Dzebo, Zoha Shawoo, Mario Cardenas, Pierrick Chalaye, Alexia Faus Onbargi, Cassilde Muhoza, Patricia Nicdao, Nokwethaba Makhanya, Navam Niles, Priyatma Singh   +10 more
wiley   +1 more source

Forces Behind South Australia's Unusual Structural Changes Since 1840

Australian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT The agricultural sector's share of GDP in growing economies typically declines but, for a century from the early 1850s, Australia's did not. That trend is most evident for the former colony and now State of South Australia (SA). Moreover, that share for SA has been almost flat since 1980 as well, along with the agricultural sector's share of ...
Kym Anderson
wiley   +1 more source

Study on unmanned mining technology of fully mechanized coal mining face

, 2017
The paper analyzed present situation of development of fully mechanized coal mining face, including application situation and existing problems of technologies of memory coal cutting, hydraulic support automation, coal and rock identification and so on ...
SUO Zhiwe
core   +1 more source

Application of Cutting Roof Pressure Relief Pre-fracturing Technology in Fully Mechanized Caving Face in Extra Thick Coal Seam

Meikuang Anquan, 2020
In order to improve the top coal resources at both ends of fully mechanized top coal caving face in extra-thick seam and the recovery rate of coal resources during the initial caving, reduce the impact of initial weighting on the working face during the
SUN Zhenping
doaj   +1 more source

‘Elbow grease and yellow soap’: Housework time in working‐class households in late‐nineteenth and early twentieth‐century Britain

The Economic History Review, EarlyView.
Abstract Housework is central to feminist calls for recognition of women's work, economic histories explaining the sexual division of labour, and claims regarding the progressive role of scientific knowledge. Yet little is known about the time it actually took. We address this lacuna.
Sara Horrell, Jane Humphries
wiley   +1 more source

Design of automation control system of fully-mechanized coal face

, 2015
In order to realize collaborative automation running of equipments on fully-mechanized coal face, an automation control system of fully-mechanized coal face was designed, composition and function realization of three machine control system, belt conveyor
PENG Qingguo, ZHENG Jiasong, SU Zhengfei, ZHANG Xiansheng, DING Congshi, ZHANG Xianyu, LYU Lei   +6 more
core   +1 more source

Innovation progress and prospect on key technologies of intelligent coal mining

Gong-kuang zidonghua, 2018
Innovation and practice were summarized overall about intelligent fully mechanized coal mining in thin coal seam and thinner coal seam, intelligent fully mechanized coal mining of large mining height and super large mining height in thick coal seam, and ...
WANG Guofa, FAN Jingdao, XU Yajun, REN Huaiwei   +3 more
doaj   +1 more source

Understanding Non‐Compliant Work and Employment in the United Kingdom? The Field of Research and Policy Limitations

Industrial Relations Journal, EarlyView.
ABSTRACT Official discourse suggests that 12% of Britain's workforce engages in precarious work where non‐compliance is concentrated. Research reported here suggests this provides a partial picture and that, in specific sectors, non‐compliant employers, organized crime groups and criminalized employment are ceded by the state, where many ...
Ian Clark, Nidhi Sharma, Darryl Dixon, Richard Pickford   +3 more
wiley   +1 more source