The long term benefits of manuring grassland with animal wastes     

R.S. Shiel 《Soil Use and Management》1995,11(3):148-149

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Measurement scales on the continuum     

Luce RD  Narens L 《Science (New York, N.Y.)》1987,236(4808):1527-1532

In a seminal article in 1946, S. S. Stevens noted that the numerical measures then in common use exhibited three admissible groups of transformations: similarity, affine, and monotonic. Until recently, it was unclear what other scale types are possible. For situations on the continuum that are homogeneous (that is, objects are not distinguishable by their properties), the possibilities are essentially these three plus another type lying between the first two. These types lead to clearly described classes of structures that can, in principle, be incorporated into the classical structure of physical units. Such results, along with characterizations of important special cases, are potentially useful in the behavioral and social sciences.  相似文献   

American chemistry: essays on the history of organic chemistry in the United States, 1875-1955     

Gortler L 《Science (New York, N.Y.)》1987,236(4807):1476-1477

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Some other books of interest: nutritional anthropology     

L K 《Science (New York, N.Y.)》1987,237(4812):308

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Some other books of interest: essays on the history of organic chemistry     

L K 《Science (New York, N.Y.)》1987,237(4819):1237

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Some other books of interest: an international history of mammalogy     

L K 《Science (New York, N.Y.)》1987,237(4819):1237-1238

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Response of egg weight to the inclusion of various fats in layer diets     

R. H. Scragg  N. B. Logan  N. Geddes 《British poultry science》1987,28(1):15-21

1. Brown egg layers were fed diets differing in oil content, oil source and linoleic acid concentration and the effect on performance from 22 to 69 weeks of age was studied.

2. The birds responded with an increasing mean egg weight up to a linoleic acid intake of 2.75 g/bird d.

3. Increasing the intake of readily absorbable oil without increasing linoleic acid concentration did not increase mean egg weight.  相似文献   

Telephone advice and the law          下载免费PDF全文

Rozovsky LE 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(4):209-217

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Infestation in the dog by the paralysis tick Ixodes holocyclus 3. Respiratory effects     

J. E. ILKIW  D. M. TURNER 《Australian veterinary journal》1987,64(5):142-144

To assess respiratory function in dogs with tick paralysis, respiratory measurements were recorded on 14 dogs experimentally infested with Ixodes holocyclus. There was a progressive fall in respiratory rate with no change in tidal volume, which resulted in a significant fall in minute respiratory volume in the latter stages of the disease. The fall in respiratory rate was possibly central in origin and was accompanied by an increased alveolar-arterial oxygen tension difference, probably caused by pulmonary congestion and oedema. The "grunting" respiration seen in tick paralysis was due to closure of the vocal cords during expiration and could represent an attempt to re-expand collapsed parts of the lung.  相似文献   

Vaccination-related anthrax in three llamas   总被引：1，自引：0，他引：1  

M E Cartwright  A E McChesney  R L Jones 《Journal of the American Veterinary Medical Association》1987,191(6):715-716

Two llama calves died 3 days after inoculation with anthrax vaccine. Concurrent administration of ivermectin and other biologics may have enhanced the infectivity of the Sterne strain vaccine of Bacillus anthracis. This experience suggests that the Sterne strain of anthrax vaccine can induce fatal disease when given to young llamas and should be used only with extreme care and in face of strong "at risk" situations.  相似文献