نتایج جستجو برای: water germs
تعداد نتایج: 552344 فیلتر نتایج به سال:
We introduce the concept of topological finite-determinacy for germs analytic functions within a fixed ideal I, which provides a notion of topological finite-determinacy of functions with non-isolated singularities. We generalize classical results of Thom and Varchenko stating the following: let A be the complement in the ideal I of the space of germs whose topological type remains unchanged un...
The quality has always been a requirement of safety in the modern economy in Algeria; it is also an ongoing concern, if not a priority or a necessity as well and foremost for the consumer and for the producer and the processor, activating within the chain of production and marketing of milk and dairy products. Series of analyzes were performed on milk powder as raw material and the reconstitute...
The influence of fluoride on tooth germ development, especially mineralised tissue, is well documented in numerous dental publications, but there are few reports concerning the influence of fluoride on enamel organ and dental papilla cells. The aim of the study was to assess histologically the development of tooth germs of 20-day-old rat foetuses whose mothers drank water without fluoride or wi...
Does economic development depend on geographic endowments like temperate instead of tropical location, the ecological conditions shaping diseases, or an environment good for grains or certain cash crops? Or do these endowments of tropics, germs, and crops affect economic development only through institutions or policies? We test the endowment, institution, and policy views against each other us...
Let On+i denote the ring of germs at the origin of holomorphic functions (C ,0) —• C. As a ring 0n+i has a unique maximal ideal ra, the set of germs of holomorphic functions which vanish at the origin. Let Gn+\ be the set of germs at the origin of biholomorphisms <\>: (C ,0) —• (C ,0). The following are three fundamental equivalent relations in 0n+iDEFINITION 1. Let ƒ, g be two germs of holomor...
illus., no price given. The author, to whom we are indebted for a most interesting history of Spanish obstetrics and several historical monographs, has focussed his interest on the 'enlightened' Ruiz de Luzuriagas, father and son, Basque physicians like the author. The father emerges as a great defender of smallpox inoculation, widely practised in Spain before Jenner's vaccination was universal...
OBJECTIVE To explore asthma pathogenesis using data from upper and lower airways. DATA SOURCE English-language papers on human asthma and nasal polyp subjects from 1990 onwards. STUDY SELECTION High-quality studies in established journals. RESULTS The recognition of its inflammatory nature led to a quantum leap in the understanding and treatment of asthma, with lives saved by inhaled cort...
Sewage sludge was used as fertilizer in agriculture in Switzerland since the begin ning of modern waste water treatment. During the last 40 years several difficulties arose with the agricultural use. The problems with pathogenic germs could be solved with a prepasteurisation. The contamination with heavy metals was reduced during the years but remained a cause for concern. The fear of mad cow d...
Introductory. 1. Symptoms of Cholera. 2. Sporadic Cholera. 3. Epidemic Cholera. 4. In Relation to Age. 5. In Relation to Sex. 6. The Development of Epidemics. 7. Diffusion of Cholera. 8. In Relation to Rivers. 9. Potable Water. 10. In Relation to " Poison " and " Germs". 11. Atmospheric Conditions. 12. Prevailing Winds and Storms. 13. In Relation to Season. 14. In Relation to Natives and Foreig...
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