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排序方式: 共有1268条查询结果,搜索用时 15 毫秒
921.
E D Roberts G B Baskin E Watson W G Henk T C Shelton M S Bowen 《Veterinary pathology》1984,21(6):592-596
Naturally occurring deposition of calcium pyrophosphate has been identified in six rhesus monkeys following acute episodes of trauma and various septicemias. Scanning electron microscopy with energy-dispersive X-ray analytical system and single crystal electron diffraction studies were used to identify the crystals within the articular cartilage. The osteoarthritis grading system was used to determine the degree of cartilage degenerative changes. 相似文献
922.
923.
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926.
H. W. Roberts 《Grass and Forage Science》1960,15(4):287-290
It has been observed that, where surface seeding has been attempted, disappointing results occur on some sites due to delays in sowing the seeds mixture after lime and fertilizer applications have been made.
An experiment is described in which the time of application of nitrogen, in relation to the establishment and development of S24 and S23 perennial ryegrass seedlings in pots, was varied. The results of trials on this aspect of surface seeding, under conditions experienced in the north of Scotland, are also given.
More efficient utilization of nitrogen was obtained when applications were delayed until the seedlings had developed sufficiently to utilize the applied nitrogen. This delay enhanced the establishment of sown grasses under conditions where natural species, capable of responding to applied nitrogen, were present.
Where surface seeding is undertaken, consideration should be given to delaying the application of nitrogen until the sown seeds have brairded. 相似文献
An experiment is described in which the time of application of nitrogen, in relation to the establishment and development of S24 and S23 perennial ryegrass seedlings in pots, was varied. The results of trials on this aspect of surface seeding, under conditions experienced in the north of Scotland, are also given.
More efficient utilization of nitrogen was obtained when applications were delayed until the seedlings had developed sufficiently to utilize the applied nitrogen. This delay enhanced the establishment of sown grasses under conditions where natural species, capable of responding to applied nitrogen, were present.
Where surface seeding is undertaken, consideration should be given to delaying the application of nitrogen until the sown seeds have brairded. 相似文献
927.
An alum-treated vaccine for the control of foot-rod in sheep 总被引:1,自引:0,他引:1
928.
929.
Preliminary studies on the cell-mediated immune response in pigs to Mycoplasma hyopneumoniae 总被引:1,自引:0,他引:1
D H Roberts 《The British veterinary journal》1973,129(5):427-438
930.