نتایج جستجو برای: mine explosion
تعداد نتایج: 40903 فیلتر نتایج به سال:
The large-scale cryogenic gravitational wave telescope (LCGT) is the future project of the Japanese gravitational wave group. Two sets of 3 km arm length laser interferometric gravitational wave detectors will be built in a tunnel of Kamioka mine in Japan. LCGT will detect chirp waves from binary neutron star coalescence at 240 Mpc away with a S/N of 10. The expected number of detectable events...
It is widely accepted that mineral flotation is a very challenging control problem due to chaotic nature of process. This paper introduces a novel approach of combining multi-camera system and expert controllers to improve flotation performance. The system has been installed into the zinc circuit of Pyhäsalmi Mine (Finland). Long-term data analysis in fact shows that the new approach has improv...
The social use of ecstasy (methylenedioxymethampheta-mine, MDMA) and amphetamines is widespread in the UK and Europe, and they are popularly considered as 'safe'. However, deaths have occurred and hepatotoxicity has featured in many cases of intoxication with amphetamine or its methylenedioxy analogues such as ecstasy. Recreational use of these drugs presents an important but often concealed ca...
Human activities on the Earth's surface change the landscape of natural ecosystems. Mining practices are one of the most severe human activities, drastically altering the chemical, physical and biological properties of the soil environment. Bacterial communities in soil play an important role in the maintenance of ecological relationships. This work shows bacterial diversity, metabolic repertoi...
The radio waves are more complex in confined environments. In order to obtain the propagation character of radio wave in the mine tunnel, the electric-field intensity and magnetic-field intensity of horizontal polarization wave are deduced according to Maxwell equation and the boundary condition of tunnel. The attenuation coefficients of electric field in horizontal and vertical polarization ar...
31483]{ p i.p. dlmethyt'__m_'/Aldrich/ and/Sigma-Chem./ cf. !LSD' = Delysid chron. _' tolerance influence on 'reflex-motive' food-rewarding bar pressing rat /XXXII/ J.Pharmacoi.Exp.Ther. 197, No.3, 495-502 /1976/ Kovacic B, Domino E F /Detroit and Ann Arbor,Mich.,USA/ Tolerance and Limited Cross-Tolerance to the Effects of N,NDimethyltryptamine (DMT) and Lyserglc Acid Diethylamlde-Z5 /LSD) on F...
A new concept for antipersonnel mine (APM) detection is proposed. The detection system is based on a focused heat source and a contactless thermometer mounted on a head scanning the soil. Presence of heat capacity and diffusivity anomalies (mine candidates) is assessed from anomalies in the temperature measured after the local
Static electricity is one of the reasons for gas explosions in coal mines. When miners leave the narrow tunnel exit of a coal mine, the body voltage may increase by more than ten times with the body capacitance decreasing quickly to 1/10 of its original value, and the body electrostatic discharge (ESD) energy can increase greatly to become a dangerous gas ignition source. In this work, simulati...
OBJECTIVE While acetylcholinesterase inhibitors, such as donepezil, galantamine, and rivastig-mine, are beneficial in treating behavioral symptoms of patients with Alzheimer's disease (AD), their dose-limiting effects include gastrointestinal disturbances, such as nausea, vomiting, and diarrhea. We aimed to predict the occurrence of these gastrointestinal disturbances with rivastigmine therapy ...
Over the last 15 academic volumes of publication of the Journal of Evaluation in Clinical Practice (JECP), the Editor, with an extensive number of colleagues internationally, has called continuously for the advocates of evidence-based medicine (EBM) to answer their critics in an open, intellectually rigorous and collegiate manner [1–14]. Now, some of the leading protagonists of EBM – Benjamin D...
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