نتایج جستجو برای: year period 1960
تعداد نتایج: 1009100 فیلتر نتایج به سال:
In 1954 a paper was published (Collis, Kelly, and Wiley) which described a study of the control of reflux at the lower end of the oesophagus and put forward an operative technique based on the findings. This operation has been used since that time, and this paper gives the experience from the first 200 consecutive cases. The period covered is from March, 1953, to March, 1960, but of special int...
Administration of oral vaccine to large numbers of children over a short period of a few days requires considerable organization and advance planning. We were fortunate in that several members of the Middletown Project Staff were able to visit and consult with those responsible for the Rochester, New York and Cincinnati, Ohio oral vaccine programs which had been carried out in the preceding yea...
Remote sensing (satellite and airborne) in situ monitoring measurements indicate that the Meighen Ice Cap has thinned by 10 ± 3 m between 1960 2016, resulting areal shrinkage 32 km 2 (38%) total mass loss of 0.71 0.2 gigatonnes. Retreat ice margin along North basin up to 2.5 accounted for 50% area over 56-year period this study. A strong inverse relationship atmospheric summer temperature anoma...
Background and Objective: Malignant otitis externa is a rare but potentially fatal infection. It tends to affect the elderly as well as patients with diabetes and immunocompromised status. We aimed to identify the epidemiological, clinical, therapeutic, and evolutionary features of malignant otitis externa. Methods: We conducted a retrospective study including patients hospitalized in the infe...
Wildlife conservation and management approaches typically focus on demographic measurements to assess population viability over both short and long periods. However, genetic diversity is an important predictor of long term population vitality. We investigated the pattern of change in genetic diversity in a large and likely isolated moose (Alces alces) population on Isle Royale (Lake Superior) f...
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