نتایج جستجو برای: mining equipment

تعداد نتایج: 162214  

2017
Kunpeng Gao

Strata and surface movement induced by mining under open-pit final slope is a huge 8 threat to mine safety. Physical model test is an important method to study mining-induced strata 9 and surface movement laws. Because of rock joints predominantly control rock mass deformation 10 and failure, thus physical model test leaving out of consideration of rock joints is difficult to reflect 11 the inf...

2005
Liwen Vaughan Justin You

1 Abstract Few studies have explored the possibility of mining Web hyperlink data for e-commerce or business information. This study is an attempt to fill this gap. The project selected a group of telecommunications equipment companies and collected data on the number of links pointing to the company Websites (inlinks) and the company’s revenue. A significant correlation between the two variabl...

1996
JOHN J. SAMMARCO

The U.S. Bureau of Labor Statistics reports that the mining industry has the highest average annual fatality rate (31.9 per 100,000 workers) among all major American industry. To address this, a major research program to reduce hazard exposure of miners with computer-assisted mining equipment was initiated by the U.S. Bureau of Mines. One application involves the manual 1 process of extracting ...

Journal: :Management Science 2022

We argue that the concentrated production and ownership of Bitcoin mining hardware arise naturally from economic incentives mining. model as a two-stage competition; miners compete in prices to sell while competing quantities for rewards. characterize equilibria our show small asymmetries operational costs result highly equipment. further equipment will be dominated by miner with most efficient...

2007
Richard J. Mayer Madhav Erraguntla

We present the application of data mining and analytics to support medical material management. Medical materials considered include medical equipment, drugs and pharmaceuticals, and blood. This paper presents the work performed in two different Office of Secretary of Defense (OSD) funded projects – (i) Medical Material Knowledge Discoverer (MMKD), covering medical equipment, pharmaceuticals an...

2006
Bibhuti B. Mandal Anup K. Srivastava A. K. Srivastava

Equipment-induced vibration is widely recognized as a health hazard. It is a physical stressor to which many people are exposed at workplace. Mining industry is no exception. In spite of extensive research undertaken in the developed countries, information on the magnitude of the problem in India is not available. An estimated 1 million workers were engaged in the Indian mining industry in the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

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