The Katowice conurbation is situated in the Upper-Silesian Coal Basin, in a region which had high rate of water inflow in the pre-mining period.In order to make deposits of mineral resources accessible, it was, and still is, necessary provide mines with a draining system, which now reaches as deep as 1200 m.The area of the depression sink which was
In view of problems of poor support effect, slow support speed, high support cost and great labor intensity of advance support with advanced hydraulic support, single hydraulic prop or timber in return airway of fully-mechanized icon track bar f250 high cutting coal mining face of a coal mine in Yulin mining area, a high cutting chock type hydrauli
This paper argues for a place for linguistics within the UK Modern Languages curriculum as part of a more pluralistic approach to languages study.Based on an intervention involving over 300 A-level students of French, German and Spanish, we demonstrate: 1) that it is feasible and appropriate to include linguistics topics on the A-level Modern Forei
Abstract Microreaction provides a controllable tool to synthesize CdSe nanocrystals (NCs) in an accelerated fashion.However, the surface traps created during the fast growth usually result in low photoluminescence (PL) efficiency for the formed products.Herein, the reproducible synthesis of highly luminescent CdSe NCs directly in open air was repor
Dispersal capability often decides the geographical distribution and long-term success of a species.In this investigation, Pontodrilus litoralis, a natio celebrate eyeshadow palette widely distributed species along shores throughout mid- and low latitudes of the world, was investigated.We tested three hypotheses explaining its dispersal: helped by