نتایج جستجو برای: 1980
تعداد نتایج: 41860 فیلتر نتایج به سال:
Remarkable insight into disturbed lung mechanics of preterm infants was gained in the 18th and 19th century by the founders of obstetrics and neonatology who not only observed respiratory failure but also designed devices to treat it. Surfactant research followed a splendid and largely logical growth curve. Pathological changes in the immature lung were characterized in Germany by Virchow in 18...
The three cases of fetid ozena from two Africans and a Saudi Arabian immigrant reported from Minnesota by Yelenich-Huss and others reminded me of polymicrobial sinus infections among leprosy patients seen in Carville, LA, in the 1980s. Klebsiella pneumoniae ozaenae grew mostly as a commensal from the upper respiratory tract of lepromatous leprosy patients with rhinorrhea. Klebsiella pneumoniae ...
Ealancing of the model required few steps that went beyond the available data; nevertheless, the model is preliminary in that additional ecological information is available on PWS and the functional groups of the organisms therein. Much of this information is not yet incorporated in the model. However, the purpose of this model is to serve as basis for further work, illustrated in two authored ...
The early history of computers in Finnish schools occurred during the period 1978–1995. In high schools, courses were officially included in the curricula in 1982, while at the upper level of comprehensive school, computer courses started in 1987. This paper describes and analyzes the challenges and results of the first wave of computer education in the Finnish school system.
Neighborhoods within 2 km of most central business districts of U.S. metropolitan areas experienced population declines from 1980 through 2000 but have rebounded markedly since 2000 at greater pace than would be expected from simple mean reversion. Statistical decompositions reveal that 1980-2000 departures of residents without a college degree (of all races) accounted for most of the declines ...
PROBLEM/CONDITION Asthma, a chronic disease occurring among both children and adults, has been the focus of clinical and public health interventions during recent years. In addition, CDC has outlined a strategy to improve the timeliness and geographic specificity of asthma surveillance as part of a comprehensive public health approach to asthma surveillance. REPORTING PERIOD COVERED This repo...
Introduction THIS year I have dealt with a number of topics quite unashamedly representing my own close interests gastroenterology, the biliary system, peripheral vascular surgery, cancer surgery, diseases of the breast and wound healing. I hope this review gives a fair picture of the continued clinical and experimental advances which surgeons throughout the world are making in the scientific p...
دهه 1980 دهه انتظارات بزرگ بود. شوکهای تخریب کننده دهه 1970 را سپری کرده بودیم . رکوردها هر چند دردناک بودند ولی باعث ایجاد زمینه رونق غیر تورمی و رشد اقتصادی شدند . متاسفانه فرصت از دست رفت و دولتها در دهه 1990 وارث اقتصادهای ملی می باشند که به مراتب پایین تر از ظرفیت بالقوه آنها عمل کرده و شاهد سیاستهای ناهماهنگی می باشند که مبادلات جهانی را دستخوش هرج و مرج و بی نظمی می کند.
Ultraviolet spectra of seven comets taken with the same instrument are presented. Comets P/Encke (1980), P/Tuttle (1980 h), P/Stephan-Oterma (1980 g), and Meier (1980 q) were observed during November-December 1980 with the International Ultraviolet Explorer (IUE) satellite observatory, while comets P/Borrelly (1980 i) and Panther (1980 u) were observed with IUE on 6 March 1981. The spectra of t...
3 A latecomer to the general-purpose, transistor computer market, Sperry Rand first shipped its large-scale Univac 1107 and Univac III computers to customers in the second half of 1962, more than two years later than such key competitors as IBM and Control Data. While this lateness enabled Sperry Rand to produce relatively sophisticated products in the 1107 and III, it also meant that they did ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید