نتایج جستجو برای: shortwall mining

تعداد نتایج: 86652  

One of the most important steps involved in mining operations is to select an appropriate extraction method for mine resources. After choosing the extraction method, it is usually impossible to replace it with another one because it may be so expensive that implementation of the entire project could be economically impossible. Choosing a mining method depends on the geological and geometrical c...

Journal: :journal of agricultural science and technology 2012
s. h. sadeghi m. kiani harchegani

soil erosion causes sediments to be detached from their source materials and transported as suspended particles. the present study was conducted to evaluate the effects of sand exploitation on the distribution of suspended sediments in the educational and research forest watershed of tarbiat modares university, which comprises approximately 50,000 ha. fifty-one water samples were collected befo...

Mahdieh Jamshidi, Masoud Saeed, Rostam Yazdani, Seyed Ali Akbar Arabzadeh, Vahid Jamshidi,

Background: The clinical field has vast sick data that has not been analyzed. Discovering a way to analyze this raw data and turn it into an information treasure can save many lives. Using data mining methods is an efficient way to analyze this large amount of raw data. It can predict the future with accurate knowledge of the past, providing new insights into disease diagnosis and prevention. S...

Journal: :مدیریت اطلاعات سلامت 0
حمید مقدسی دانشیار، مدیریت اطلاعات سلامت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران اعظم السادات حسینی استادیار، مدیریت اطلاعات سلامت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران فرخنده اسدی استادیار، مدیریت اطلاعات سلامت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران مریم جهانبخش مربی، آموزش مدارک پزشکی، دانشگاه علوم پزشکی اصفهان و دانشجوی دکتری، مدیریت اطلاعات سلامت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

health databases contain a wide scope of clinical data to explore relationships and patterns that can lead to new medical knowledge.today, the emergence of integrated information systems and growth of information technologies have better highlighted the importance of such databases. data mining is among the technological advances toward data management whose integration with traditional methods...

Mining is among the oldest industries. It is the primary source of raw materials for most of the sectors. Little is known about the complex inter-sectoral carbon linkages of the mining industry. In this work, we estimate the inter- and intra-sectoral carbon linkage impacts of the mining sector across ten major economies by applying an input-output model, and the hypothetical extraction method a...

Rajasthan is one of the main mineral potential state of India. During the last 30 years it has witnessed enormous expansion of mining industries, but mining of most of the minor minerals coupled with changing climate has posed serious problems to the environmental fabric in the state, apart from base metal beneficiation plants. Groundwater is also being polluted day-by-day by effluents generate...

تیمورپور, بابک , رهنما, پریسا , سپهری, محمدمهدی , شادپور, پژمان ,

Background: Data mining as a multidisciplinary field is rooted in the fields such as statistics, mathematics, computer science and artificial intelligence and has been gaining momentum in scientific, managerial, and executive applications in health care. Data mining can be defined as the automated extraction of valuable, practical and hidden knowledge and information from large data. Applying d...

Bitcoin soon attracted the attention of experts and the general public around the world, including the Islamic community. Due to the novelty of the subject, although little research has been done to examine the legitimacy of bitcoin mining from the perspective of Muslim thinkers, this paper is responsible for examining two reasons in the research of contemporary Sunni thinkers. The two reasons ...

Background and Aim: With the advent of technology and the use of social networks such as Instagram, Facebook, blogs, forums, and many other platforms, interactions of learners with one another and their lecturers have become progressively relaxed. This has led to the accumulation of large quantities of data and information about studentschr('39') attitudes, learning experiences, opinions, and f...

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