منابع مشابه
Man-made mineral fibres.
minerai fibres in boards for sound-insulation of ceiling (Dan.). Ugeskr. Laeger, 145, 43-47 American Conference of Governmental Industria1 Hygienists (1986) Threshold Limit Values and Biological Exposure Indices/or 1986-1987, Cincinnati, OH, pp. 19,34 Andersen, A. & Langmark, F. (1986) Incidence of cancer in the mineral-wool producing industry in Norway. Scand. J. Work Environ. Health, 12 (Supp...
متن کاملMan made deltas
The review of geochronological and historical data documents that the largest southern European deltas formed almost synchronously during two short intervals of enhanced anthropic pressure on landscapes, respectively during the Roman Empire and the Little Ice Age. These growth phases, that occurred under contrasting climatic regimes, were both followed by generalized delta retreat, driven by tw...
متن کاملMan-made Mineral Fibres
practice, the detection Ii mit of scanning electron microscopy is about 0.1 j.m (Middleton, 1982). Transmission electron microscopy may be required to detect very thin fibres (Rood & Streeter, 1985). The elemental composition of individual fibres can be determined with an energy-dispersive X-ray ana1ysis attachment combined with an electron microscope (Middleton, 1982). Fibres are counted and s...
متن کاملThe Tragedy of Man-Made Disease
I yIELI) to no one in mny admiration of and praise for our predecessors and our colleagues who have achieved so much success in the science and art of medicine. It is true to say that more progress has been made in the last fifty years (especially in the last thirty-five) than in the previous five hundred years. Death rates, both general and particular, have crashe(l dramatically; infectious di...
متن کاملClassification and Analysis of Troglodytic Architecture, Man-made Cave, in the county of Maragheh
Man-made caves or troglodytic spaces are special kinds of architecture in which no materials are applied for creating the spaces and in turn they are created through decreasing the rocky mass in the ground and rock’s bed by human being. The Man-made caves or troglodytic spaces have been identified and introduced in different parts of the country so far. Maragheh County which is located in the n...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1978
ISSN: 0028-0836,1476-4687
DOI: 10.1038/271610b0