康氏木霉孢子的致死温度及存活期的试验研究

康氏木霉孢子的致死温度是７１℃／１０分钟．在不同的保存条件下，康氏木霉孢子的存活时间长短不同．埋入土壤中的孢子的存活情况还随培养料的不同而不同。     

High complication rate of an automatic Tru-Cut biopsy gun device for liver biopsy in cats

BACKGROUND: Liver biopsies taken with an automatic Tru-Cut biopsy gun device caused unexpected fatal shock reactions in cats. The goal of the present study was to determine if this biopsy device caused more frequent fatal complications than did a semiautomatic device. ANIMALS: All cats referred to the Utrecht University, between October 1, 2002, and October 31, 2004, in which ultrasound-guided Tru-Cut liver biopsies were taken. The indications for liver biopsy were increased liver enzyme activity, increased bile acid concentrations, ultrasonographic abnormalities of the liver, ultrasonographic abnormalities of the bile ducts, or some combination of these findings. Coagulation parameters were normal. METHODS: From October 1, 2002, until October 31, 2003, 26 cats were biopsied with an automatic biopsy device. Between November 1, 2003, and October 31, 2004, 19 cats underwent liver biopsy with a semiautomatic biopsy device. RESULTS: In the first period. 5 of the 26 cats (19%) developed severe shock within 15 minutes. Resuscitation was not successful. In the second period, none of the 19 cats experienced any major adverse effect. There were no significant differences between the 2 groups with respect to diagnosis, clinical signs, clinicopathologic findings, or the use of anesthetics. CONCLUSIONS AND CLINICAL IMPORTANCE: We conclude that the difference in complication rate is explained by the biopsy technique used. The pressure wave, which occurs when firing the automatic device, may have caused intense vagotonia and shock. Use of this automatic biopsy device should be avoided in cats because of the high risk of fatal complications.     

桔小实蝇卵致死低温的相关研究

以桔小实蝇(Bactrocera dorsalis)卵为试材,对实蝇卵在3.0(±0.1)℃和5.0(±0.1)℃下低温处理致死时间进行研究,以及对实蝇卵在1、3、5、7、9、11、13、15、18、20、22、25、28、31℃14个不同温度条件下的致死低温进行研究。结果表明在3.0(±0.1)℃和5.0(±0.1)℃条件下,实蝇卵的致死时间分别为8 d和11 d;实蝇卵致死低温在9~10℃之间。