نتایج جستجو برای: cristobalite

تعداد نتایج: 356  

2011
Merete Drevvatne Bugge Solveig Føreland Kristina Kjærheim Wijnand Eduard Jan Ivar Martinsen Helge Kjuus

OBJECTIVES Increased mortality from asthma, chronic bronchitis and emphysema has previously been reported among workers in the silicon carbide (SiC) industry. The objective of the present study was to evaluate the influence of specific exposure factors on mortality from obstructive lung diseases (OLD), using a newly revised job-exposure matrix. MATERIALS AND METHODS 1687 long-term workers emp...

Journal: :Journal of the Ceramic Society of Japan 2000

Journal: :Central European Geology 2021

Abstract Although the Mesozoic rocks of Transdanubian Range have been subject a multitude different studies, mineralogical research is largely underrepresented. The clay mineralogy Lower Jurassic (especially Pliensbachian and Toarcian) strata was broadly investigated earlier; however, systematic high-resolution studies remain scarce. Here we present study focusing on Upper Lókút-Hosszúárok sect...

Journal: :The Journal of the Geological Society of Japan 1950

Journal: :Journal of the Ceramic Association, Japan 1982

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