نتایج جستجو برای: salt mine

تعداد نتایج: 103396  

Short-term production plans are the basis for operational mine production schedules. They concentrate on making long-term mine plans operationally feasible. Furthermore, some variables such as ore grade and tonnage govern mine production systems and cause uncertainty in the supply of raw materials to the mills. Due to the quality variation of material, short-term production optimization is an u...

Journal: :Geochemical Transactions 2007
Clinton D Church Richard T Wilkin Charles N Alpers Robert O Rye R Blaine McCleskey

Sediments recovered from the flooded mine workings of the Penn Mine, a Cu-Zn mine abandoned since the early 1960s, were cultured for anaerobic bacteria over a range of pH (4.0 to 7.5). The molecular biology of sediments and cultures was studied to determine whether sulfate-reducing bacteria (SRB) were active in moderately acidic conditions present in the underground mine workings. Here we docum...

2017
Jinhui Chen Jinliang Chen Hui Yan

Strategic researches on green mine construction are of great theoretical and practical significance to the sustainable development of China's mining industry as well as the great-leapforward development strategies of China. Strategies of green mine construction in China are methods summarized to solve all potential problems from mine production to ecological restoration. At present, strategies ...

2016
Russell L. Blaylock

S811 Recently, I had an experience with one of the negative manifestations of modern medicine, an event that should teach us all some important lessons concerning health care. It all began when my wife and I received a phone call from my wife's sister that my mother‑in‑law, who is 91‑year‑old, had just experienced an ischemic stroke involving her right carotid following a minor eye procedure fo...

2017
Yating Dong Hui Liu Yi Zhang Jiahui Hu Jiyu Feng Cong Li Cheng Li Jinhong Chen Shuijin Zhu

Aldehyde dehydrogenases (ALDHs) are a superfamily of enzymes which play important role in the scavenging of active aldehydes molecules. In present work, a comprehensive whole-genomic study of ALDH gene superfamily was carried out for an allotetraploid cultivated cotton species, G. hirsutum, as well as in parallel relative to their diploid progenitors, G. arboreum and G. raimondii. Totally, 30 a...

2004
Van Nguyen

The Sudbury Neutrino Observatory (SNO) is a Cerenkov detector composed of a spherical acrylic vessel filled with 1,000 metric tonness of ultra pure heavy water. It measures 12 m in diameter and is located about 2 km deep within a Canadian nickel mine. Even at this depth, cosmic rays penetrate the detector at a rate of roughly three per hour. Muons passing through the detector will interact with...

A.R. Azadmehr H. Hassani, S. Tabasi

The present work was planned to evaluate the phytoextraction of metal mine tailings, Sarcheshmeh copper mine, SE of Iran, by the endemic plant species Medicago sativa L. (Alfalfa). In this pot experiment, we investigated the effects of seven amendments on the growth of alfalfa and uptaking metals from the mine tailings and stream sediment of tailing dam surface. The mean metal concentrations in...

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