منابع مشابه
Oxygen recovery systems for manned space flight.
T H E PROBLEM of supplying man with his oxygen requirement and uncontaminated air during prolonged confinement is receiving considerable research attention. In particular, the recovery of oxygen using biological specimens as the mechanism for converting carbon dioxide into oxygen plus other materials has been the subject of many papers recently. There can be no doubt concerning the need for a r...
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T HE POTENTIAL medical hazards of man's venture into space will span a number of disciplines in regard to the pathology and deranged physiology to which the human body may be subject in travel beyond the earth's atmosphere. Not the least hazard is that having to do with the effects of radiation to be encountered in free space. This problem is one which is receiving considerable attention from a...
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Unfortunately the qualities which count for most in medicine are not precisely measurable. The measurable-examination performance at school-neither necessarily relates to these qualities nor guarantees intellectual potential. Furthermore, there is no acceptable objective measure of the quality of a doctor against which to test the worth of earlier decisions. In this sea of uncertainty it is not...
متن کاملNavigation Techniques of Mobile Robots In Greenhouses
With the continuous development of the industrialization process, the countries all over the world gradually appeared lack of agricultural labor force and aging phenomenon, which was especially prominent in developed countries. However the agricultural robot with high operating efficiency, high qualities of work will play an increasingly important role in future agricultural production. Robot n...
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ژورنال
عنوان ژورنال: Journal of Navigation
سال: 1964
ISSN: 0373-4633,1469-7785
DOI: 10.1017/s0373463300037565