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排序方式: 共有92条查询结果,搜索用时 31 毫秒
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Y. Schulman S.P. Monselise 《The Journal of Horticultural Science and Biotechnology》2013,88(4):471-478
Some preliminary data on the natural wax coat of citrus fruits are presented. Thin-layer and column chromatography showed that the main differences from apple and grape waxes were the relatively higher percentage of esters, the lower percentage of alcohols and the apparent lack of triterpenoids. During fruit development in the Shamouti orange wax production was approximately balanced by surface growth, sos that the amount of wax per unit surface of rind was approximately constant for most of this period. When fruit growth was slowed down by winter temperatures and incipient senescence, the amount of wax per unit surface increased. Wax production continued (possibly at a greater rate) after the fruit had been severed from the tree. Wax removal was enhanced by successive treatments with chloroform. Weight losses of fruit in storage were proportional to the number of wax removals. Packing-house treatments did not remove natural wax but seemed to check its secretion by rind cells. 相似文献
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Boutilier P Carr A Schulman RL 《Veterinary therapeutics : research in applied veterinary medicine》2003,4(4):387-396
All leptospirosis microscopic agglutination test titers for the Leptospira serovars icterohaemorrhagiae, canicola, grippotyphosa, bratislava, hardjo, and pomona conducted on 1,260 blood samples from dogs at the University of Illinois Veterinary Diagnostic Laboratory between March 1996 and March 2001 were evaluated. Low titers (1:100 to 1:400) were predominantly L. icterohaemorrhagiae and L. canicola, which represented the predominant serovars (65.4%) among all positive samples with low titers. L. grippotyphosa was the predominant serovar (72.1%) among samples with clinically significant titers (greater than 1:800). The medical records of 87 dogs with a titer greater than 1:800 that were patients at the Veterinary Teaching Hospital of the University of Illinois were reviewed. A clinical diagnosis of leptospirosis was made in 15 cases (17.2%) based on the elevated titer, appropriate clinical signs, lack of recent vaccination, and lack of concurrent disease that could explain the clinical signs present. Renal disease was present in 10 of the cases, concurrent renal and hepatic disease in two, and hepatic disease in three. In 12 cases, the predominant serovar was L. grippotyphosa; titers to L. grippotyphosa and L. bratislava were equal in magnitude in three cases. 相似文献
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Boutilier P Carr A Schulman RL 《Veterinary therapeutics : research in applied veterinary medicine》2003,4(2):178-187
All leptospirosis microscopic agglutination test titers for the Leptospira serovars icterohaemorrhagiae, canicola, grippotyphosa, bratislava, hardjo, and pomona conducted on 1,260 blood samples from dogs at the University of Illinois Veterinary Diagnostic Laboratory between March 1996 and March 2001 were evaluated. Low titers (1:100 to 1:400) were predominantly L. icterohaemorrhagiae and L. canicola, which represented the predominant serovars (65.4%) among all positive samples with low titers. L. grippotyphosa was the predominant serovar (72.1%) among samples with clinically significant titers (greater than 1:800). The medical records of 87 dogs with a titer greater than 1:800 that were patients at the Veterinary Teaching Hospital of the University of Illinois were reviewed. A clinical diagnosis of leptospirosis was made in 15 cases (17.2%) based on the elevated titer, appropriate clinical signs, lack of recent vaccination, and lack of concurrent disease that could explain the clinical signs present. Renal disease was present in 10 of the cases, concurrent renal and hepatic disease in two, and hepatic disease in three. In 12 cases, the predominant serovar was L. grippotyphosa; titers to L. grippotyphosa and L. bratislava were equal in magnitude in three cases. 相似文献
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Camelid mucoutaneous fibropapillomas: clinicopathologic findings and association with papillomavirus
Schulman FY Krafft AE Janczewski T Reupert R Jackson K Garner MM 《Veterinary pathology》2003,40(1):103-107
Five camelid mucocutaneous fibropapillomas with histologic features similar to equine sarcoids were diagnosed. They were characterized by a dermal fibroblastic proliferation and overlying, often ulcerated hyperplastic epidermis with thin rete pegs extending down into the dermis. Two of the tumors came from llamas and three from alpacas. Four of the animals were 6-year-old females. The fifth was a 6-year-old castrated male. The fibropapillomas were located on the nose, lip, and cheeks. One of the llama tumors waxed and waned before surgery and recurred and spread after surgery. None of the other tumors recurred. All five tumors were positive for papillomavirus (PV) DNA by polymerase chain reaction testing. Nucleotide sequence analysis of the PCR product from one of the llama fibropapillomas confirmed a unique PV. This report provides the microscopic and clinical features of fibropapillomas in camelids as well as evidence for a PV etiology. 相似文献
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J Schulman 《Journal of the American Veterinary Medical Association》1985,187(5):508-509
Cryptococcosis affecting the skin and a lymph node in a 1 1/2-year-old cat was treated successfully with ketoconazole as the sole therapeutic agent. The cat was lesion-free 1 year after treatment. 相似文献
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A theory is presented in which much of the structure of spiral galaxies arises from a percolation phase transition that underlies the phenomenon of propagating star formation. According to this view, the appearance of spiral arms is a consequence of the differential rotation of the galaxy and the characteristic divergence of correlation lengths for continuous phase transitions. Other structural properties of spiral galaxies, such as the distribution of the gaseous components and the luminosity, arise directly from a feedback mechanism that pins the star formation rate close to the critical point of the phase transition. The approach taken in this article differs from traditional dynamical views. The argument is presented that, at least for some galaxies, morphological and other features are already fixed by general properties of phase transitions, irrespective of detailed dynamic or other considerations. 相似文献
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