منابع مشابه
TIMOTHY WALCH The Improvement of Library Security
RRHAPS THE BEST wAY TO BEGIN a discussion of library security is to sum: marize a theft that took place at a major state library. The case is instructive because it illustrates a number of important aspects of the problems of library security. By all reasonable standards this particular state library had a good security system. At the time of the theft there was one large archives reference roo...
متن کامل[46i ] THE SENSORY PHYSIOLOGY OF THE HARVEST MITE TROMBICULA
The ectoparasitic habit of the hexapod larva of Trombicula autumnalis is the cause of much discomfort to residents of infected localities in the British Isles, between late June and the beginning of October. The mite is a member of the Trombiculid group which includes species known to transmit disease in some parts of the world. The unfed larvae are found either upon the soil or climbing upon l...
متن کاملArtificial rearing of pigs
I . Baby pigs were removed from the sow 36-48 h after birth and reared on a diet of reconstituted whole-milk powder until 28 d of age. The whole milk was either mildly or severely heated before spray-drying ; the severe heating completely denatured the whey proteins. 2. When the two milks were given at a high level of intake, either at hourly intervals or twice daily, severe scouring and some d...
متن کاملRearing of Diamondback Moth
Mass rearing methods on artificial diets and cruciferous seedlings for the diamondback moth, Plutella xylostella L, are reviewed and described briefly.
متن کاملArtificial rearing of pigs
I. Diets containing different proportions of skim milk and fat, either beef tallow or soyabean oil, supplemented with fat-soluble vitamins were given to 2-d-old pigs. Each fat source was used in three diets containing approximately 280, 350 and 420 g fat, and 260, 235 and 210 g protein/kg dry matter respectively. 2. The diets were given as a milk containing zoo g solids/l during a 26 d experime...
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ژورنال
عنوان ژورنال: Nature
سال: 1947
ISSN: 0028-0836,1476-4687
DOI: 10.1038/160578a0