نتایج جستجو برای: 1900 and early
تعداد نتایج: 16929709 فیلتر نتایج به سال:
Major advances in the field of trace mineral nutrition occurred in the twenty century. All of the trace minerals recognized as being important in ruminant nutrition were first shown to be essential in the 1900's with the exception of iron. Between 1920 and 1960 naturally occurring deficiencies of iodine, copper, cobalt, manganese, selenium, and zinc were first reported in cattle. Today it is co...
CONTEXT Recent increases in infectious disease mortality and concern about emerging infections warrant an examination of longer-term trends. OBJECTIVE To describe trends in infectious disease mortality in the United States during the 20th century. DESIGN AND SETTING Descriptive study of infectious disease mortality in the United States. Deaths due to infectious diseases from 1900 to 1996 we...
Marcel Proust, the celebrated early twentieth century French writer, suffered from severe bronchial asthma his entire life, eventually succumbing to pneumonia. In 1900, he wrote: “An attack of asthma of unbelievable violence and tenacity – such is the depressing balance sheet of my night, which it obliged me to spend on my feet in spite of the early hour at which I got up yesterday.” In the twe...
Soft Gamma Repeaters (SGRs) undergo changes in their pulse properties and persistent emission during episodes of intense burst activity. SGR 1900+14 has undergone large flux increases following recent burst activity. Both SGR 1900+14 and SGR 1806−20 have shown significant changes in their pulse profile and spindown rates during the last several years. The pulse profile changes are linked with t...
Thanks to INTEGRAL’s long exposures of the Galactic Plane, the two brightest Soft Gamma-Ray Repeaters, SGR 1806-20 and SGR 1900+14, have been monitored and studied in detail for the first time at hard-X/softgamma rays. SGR 1806-20, lying close to the Galactic Centre, and being very active in the past two years, has provided a wealth of new INTEGRAL results, which we will summarise here: more th...
the purpose of this paper is to examine the determinants of the timing of bank failure/merger in 10 asian countries over the period of 1999-2007 using a multivariate logit model and a split population duration analysis. apart from bank-specific information, we also focus on the effects of macroeconomic and financial characteristics. the following empirical findings are obtained. first, the resu...
M. Casas, P. W. Lamberti , A. Plastino , and A. R. Plastino 4, 5 1 Department de Fisica and IMEDEA, Universitat de les Illes Balears 07122 Palma de Mallorca, Spain 2 Facultad de Matemática, Astronomı́a y F́ısica Universidad Nacional de Córdoba Ciudad Universitaria 5000 Córdoba, Argentina 3 Universidad Nacional d e La Plata, C.C. 727, 1900 La Plata, Argentina 4 Argentine National Research Center (...
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