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 کاملEnzymatic Treatment of Man-made Cellulosic Fabrics
Cellulases have been used in garment wet processing for approximately eight years. The majortty of cellulase enzyme used In textile appllcatlons has been on cotton. Denim jeans and knit and woven cotton garments are frequently treated. Cellulases effectively improve cotton’s surface eppearanco, hsndie and drape, and nsduce It0 tendency to pili or fuzz after repetitive iaunderings.‘-‘ Today, cal...
متن کاملAction and Perception in Man-Made Environments
We discuss the types of functional knowledge about an environment an agent can use in order to act effectively. We demonstrate (1) the use of structural regularities for acting efficiently, and (2) the use of physical regularities for designing effective sensors. These ideas are described in the context of an everyday task: grocery store shopping. We discuss how SHOPPER, a program, uses regular...
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ژورنال
عنوان ژورنال: Concrete Journal
سال: 1983
ISSN: 0387-1061
DOI: 10.3151/coj1975.21.2_4