منابع مشابه
Manganese micro-nodules on ancient brick walls.
Romans, Jews, Arabs and Christians built the ancient city of Toledo (Spain) with bricks as the main construction material. Manganese micro-nodules (circa 2 microm in diameter) have grown under the external bio-film surface of the bricks. Recent anthropogenic activities such as industrial emissions, foundries, or traffic and housing pollution have further altered these old bricks. The energy-dis...
متن کاملBlack hole entropy without brick walls.
We present evidence which con rms a suggestion by Susskind and Uglum regarding black hole entropy. Using a Pauli-Villars regulator, we nd that 't Hooft's approach to evaluating black hole entropy through a statistical-mechanical counting of states for a scalar eld propagating outside the event horizon yields precisely the one-loop renormalization of the standard Bekenstein-Hawking formula, S = ...
متن کاملBlack hole entropy without brick walls
The properties of the thermal radiation are discussed by using the new equation of state density motivated by the generalized uncertainty relation in the quantum gravity. There is no burst at the last stage of the emission of a Schwarzshild black hole. When the new equation of state density is utilized to investigate the entropy of a scalar field outside the horizon of a static black hole, the ...
متن کاملEffective stiffness of unreinforced brick masonry walls
Code design of Unreinforced Masonry (URM) buildings is based on elastic analysis, which requires as input parameter the effective stiffness of URM walls. Current approaches estimate the effective stiffness as fixed ratio of the gross sectional stiffness but comparisons with experimental results have shown that this does not yield satisfactory predictions. In this paper, a recently developed ana...
متن کاملPeristomal struvite incrustations.
To cite: Resende CIP, Pereira T, Ribeiro J, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2014-207472 DESCRIPTION A 42-year-old woman who had a urostomy formed at the age of 6 years for a neurogenic bladder due to a myelomeningocele presented to our department with painful white deposits of hard consistency on peristomal skin, suggestive of struvite incr...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1878
ISSN: 0016-0032
DOI: 10.1016/0016-0032(78)90228-4