نتایج جستجو برای: as a cap rock geologically
تعداد نتایج: 14005449 فیلتر نتایج به سال:
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
The successful exploration of dimension stone mainly depends on the quality, size, and shape extractable blocks stone. investigated area is in Pelješac Peninsula (Croatia), External Dinarides orogeny, built from thick carbonate succession, characterized by relatively small deposits high-quality These conditions demand challenging geological investigations “pre-quarry” phase to find optimal quar...
The Anthropocene, an informal term used to signal the impact of collective human activity on biological, physical and chemical processes on the Earth system, is assessed using stratigraphic criteria. It is complex in time, space and process, and may be considered in terms of the scale, relative timing, duration and novelty of its various phenomena. The lithostratigraphic signal includes both di...
Rock glaciers are receiving increased attention as a potential source of water and indicator climate change in periglacial landscapes. They consist an ice-debris mixture, which creeps downslope. Although rock wide-spread feature on the Tibetan Plateau, characteristics such its ice fraction unknown superficial debris layer inhibits remote assessments. We investigate one glacier semiarid western ...
A glacier table consists of a rock supported by slender column ice and form naturally on glaciers. We investigate the onset their formation at smaller scale in controlled environment. Depending size thermal conductivity cap, it can either standing an foot, or sink into block. one-dimension conduction model shows that differential melting is competition between two effects: geometrical amplifica...
A comprehensive investigation was carried out to minimize the cost price of the rock fragmentation process including: drilling, blasting, secondary blasting and separating the large boulders (oversize rocks) while loading, until the optimized fragmentation, powder factor and ratio of burden (B) to blasthole diameter (?h) were achieved by doing several stages of drilling and blasting practically...
the present paper offers a postcolonial reading of two of the best novels by v. s. naipaul – half a life and the mimic men – in five chapters. the focus of this research is on different notions of postcolonial criticism and their application on the two novels as discussed from homi bhabha’s and frantz fanons points of view. having introduced the life and literary career of v. s. naipaul in th...
according to the former researcher’s presented relations for flow through rock-fill porous media, the effects of physical characteristics was not studied separately. hence, due to the application of these relations, physical characteristics of porous materials effect must be investigated separately. in various constructed physical models of porous media, the effect of several variables such as ...
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