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91.
为了探寻不同发育期朝鲜球坚蚧的有效防治新措施,根据朝鲜球坚蚧不同发育阶段的形态特征和生物学习性,对不同龄期的若虫采取刮皮涂干、树干注射和常规喷雾等措施进行防治.试验结果表明;在施药方法上,刮皮涂干和常规喷雾是最为适用的;在药效方面,在1龄若虫期喷雾施用的几种药剂中醋盐合剂对1龄若虫的喷洒防效达到了90%以上.通过施用脱叶剂处理叶片的方法来防治2龄若虫,试验所设3种浓度的脱叶剂均能间接起到防治作用,其效果均达到了95%以上.在3龄若虫期喷雾施用的几种药剂中95%酒精合剂的喷洒防效达到了90%以上.涂干防治3龄若虫期供试的几种药剂中,20%吡虫啉可溶性液剂1∶10的稀释液防效达到了90%以上.  相似文献   
92.
Okx  J. P.  Stein  A. 《Water, air, and soil pollution》2000,118(3-4):357-376
This article presents an expert support model for in situ soil remediation. It combines knowledge andexperiences obtained from previous in situ soilremediations. The aim of this model is to optimiseknowledge transfer among the various parties involvedin contaminated site management. Structured KnowledgeEngineering (SKE) has been used as a framework formodel development. This approach requires scrutinisingall relevant data to answer questions related to anin situ soil remediation operation. Moreover, itclarifies the roles of the different involved parties.The approach was applied to a chlorinated hydrocarbonpollution at a dry cleaner's. Use of the expertsupport model resulted in the development andselection of a new remediation technique.  相似文献   
93.
A chordoma within the deep musculature adjacent to C3 and C4 was excised from a 14-year-old castrated domestic cat. Metastatic chordoma developed in a prescapular lymph node 10 months later. At necropsy 11 months after complete excision of the primary tumor, metastases were found in both retropharyngeal lymph nodes.  相似文献   
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Ultraviolet (UV)-irradiation of peripheral blood lymphocytes (PBL) of miniature swine prevented them from initiating proliferative responses in allogeneic mixed lymphocyte reactions (MLR). When pigs were given 4 weekly intravenous transfusions of UV-irradiated allogeneic donor PBL differing in major histocompatibility (MHC), PBL of recipient pigs progressively responded less vigorously to donor PBL in MLRs over the treatment period. These pigs did not produce anti-donor PBL antibody. Pigs treated with UV-irradiated PBL also had negligible delayed type hypersensitivity (DTH) responses to donor PBL at the end of the treatment period. In contrast, pigs receiving injections of untreated allogeneic PBL gave strong DTH responses to donor PBL, high proliferation in MLRs with donor PBL and all produced anti-donor PBL antibody.  相似文献   
96.
The bulbourethral glands of 323 Bos indicus or B. indicus crossbred bulls more than 1 1/2 years old were examined in an abattoir study. Bulbourethral adenitis was diagnosed grossly and confirmed by histological examination in 4 (1.2%). Unilateral chronic interstitial inflammation was seen in 2 cases; one of these was associated with a degenerative-type seminal vesiculitis. In the others adenitis was bilateral; in one case it was associated with a concretion and foreign (plant) material in the principal duct of the left bulbourethral gland; in the other bilateral case, numerous calculi were present and microscopically, a chronic active and diffuse inflammation was observed. Chemical analysis of the calculi showed calcium oxalate and tricalcium phosphate to be the most important components. Corynebacterium spp was isolated from the lesion with multiple calculi but attempts to isolate Chlamydia spp, Mycoplasma spp and Brucella abortus from the 4 adenitis cases were unsuccessful. Congenital abnormalities such as glandular fusion (2.2%) or unilateral aplasia (0.6%) were also observed. Cysts were the most common finding (19.2%), and duct dilation was frequent (7.1%). The significance of these findings in relation to fertility is considered.  相似文献   
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Osteosarcoma is the most common primary malignancy of bone in dogs and is associated with poor long‐term outcomes due to its highly metastatic nature. A better understanding of the signalling pathways and proteins involved with osteosarcoma pathogenesis may aid in improved outcomes through the use of targeted therapies. The Wnt5a protein, a ligand for the non‐canonical Wnt signalling pathway, is implicated in mediating the aggressiveness of cancer cell lines, including those of human osteosarcoma origin. Given the close relationship between human and canine osteosarcoma, the primary goal of this study was to characterize Wnt5a expression in canine osteosarcoma. Second, if Wnt5a expression was present in canine osteosarcoma, the study aimed to determine any potential association with clinical outcome and clinical variables in similarly treated osteosarcoma‐bearing dogs. Wnt5a expression was present in 26 of the 48 (54%) cases of canine osteosarcoma. Wnt5a expression was not associated with progression‐free survival (P = 0.4) or overall survival (P = 0.1).  相似文献   
100.
Serum alkaline phosphatase (ALP) concentration is a prognostic factor for osteosarcoma in multiple studies, although its biological significance remains incompletely understood. To determine whether gene expression patterns differed in osteosarcoma from patients with differing serum ALP concentrations, microarray analysis was performed on 18 primary osteosarcoma samples and six osteosarcoma cell lines from dogs with normal and increased serum ALP concentration. No differences in gene expression patterns were noted between tumours or cell lines with differing serum ALP concentration using a gene‐specific two‐sample t‐test. Using a more sensitive empirical Bayes procedure, defective in cullin neddylation 1 domain containing 1 (DCUN1D1) was increased in both the tissue and cell lines of the normal ALP group. Using quantitative PCR (qPCR), differences in DCUN1D1 expression between the two groups failed to reach significance. The homogeneity of gene expression patterns of osteosarcoma associated differing serum ALP concentrations are consistent with previous studies suggesting serum ALP concentration is not associated with intrinsic differences of osteosarcoma cells.  相似文献   
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