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cold temperature
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  低温
    Preliminary study on ammonia nitrogen treatment of microorganism in industrialized culture water at cold temperature
    低温工厂化养殖水体氨氮处理微生物的初步研究
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    In this article,the activities of LDH isozymes,G-6-PDH isozym-es and AchE isozymes in several kinds of fish which live under artificial cold condition have been determined. The change in the proportion of LDH-A,B subunits have also been analysed in order to find the adaption of the enzymic system to the cold condition and the mechanism against cold temperature in fish.
    通过人工低温环境,对某些鱼类乳酸脱氫酶(LDH)同工酶,葡萄糖-6-磷酸脱氢酶(G-6-PDH)同工酶,乙酰胆碱酯酶(AchE)同工酶活性进行了测定,对LDH-A,LDH-B亚基变化进行了分析,以探索鱼类酶系统对低温环境的适应和抗低温机制。
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    A total of 100 interspecific hybrid F_2(Cyprinus.carpio var.wuyuanensis,♂×Cypri- nus.pellegrini pellegrini,♀)were subject to acute cold temperature test,which included 10℃,8℃, 6℃,4℃and were briefed to A,B,C and D accordingly. Each step of temperature stayed only one hour and 20 individuals were collected serum.
    本研究主要报道了荷包红鲤抗寒品系(Cyprinus.carpio var.wuyuanensis)与大头鲤(Cyprinus.pellegrini pellegrini)杂交F_2在温度骤降过程中,温度对其血清中的总蛋白、白蛋白、总胆红素、胆固醇、尿素氮、血糖和甘油三酯等血清生化指标的影响。
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  cold temperature
Improvements in cold temperature hydrocarbon emissions would also be beneficial in many parts of Europe during the winter months.
      
The DEAE-dextran induced microtubules are stable to cold temperature (4°) and calcium.
      
We observed that the rubber polymer core of the rubber particles was still malleable at this extremely cold temperature, and the core stretched substantially during separation of the fracture planes.
      
While UV-C stress caused a general increase in substance formation, cold temperature stress resulted in a strong activation of barbatic acid biosynthesis.
      
Based on results of a former study in 2005, this investigation aimed at quantifying UV- and cold temperature stress-induced changes within the secondary metabolite production of the cultured mycobiont of the lichen Heterodea muelleri (Hampe) Nyl.
      
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In this article,the activities of LDH isozymes,G-6-PDH isozym-es and AchE isozymes in several kinds of fish which live under artificial cold condition have been determined.The change in the proportion of LDH-A,B subunits have also been analysed in order to find the adaption of the enzymic system to the cold condition and the mechanism against cold temperature in fish.

通过人工低温环境,对某些鱼类乳酸脱氫酶(LDH)同工酶,葡萄糖-6-磷酸脱氢酶(G-6-PDH)同工酶,乙酰胆碱酯酶(AchE)同工酶活性进行了测定,对LDH-A,LDH-B亚基变化进行了分析,以探索鱼类酶系统对低温环境的适应和抗低温机制。

From July 1993 to August 1998, an investigation of fishes in the coastal area of PenglaiCity was carried out. Penglai is located at 37°25' N--37°49'56" N and 120°34'44" E--121°09' E.All the specimens collected were examined and a total of 137 species were identified belonging to108 genera and 59 families. A detailed list is given.Based on the temperature nature of the fauna, the fishes in the littoral waters of Penglai maybe grouped into three types:(1)The warm water, comprising 34 species (24. 82% of the total).(2)The...

From July 1993 to August 1998, an investigation of fishes in the coastal area of PenglaiCity was carried out. Penglai is located at 37°25' N--37°49'56" N and 120°34'44" E--121°09' E.All the specimens collected were examined and a total of 137 species were identified belonging to108 genera and 59 families. A detailed list is given.Based on the temperature nature of the fauna, the fishes in the littoral waters of Penglai maybe grouped into three types:(1)The warm water, comprising 34 species (24. 82% of the total).(2)The warm temperature, with 83 species (60. 58% ).(3)The cold temperature, with 20 species (14. 60% ).According to the ecological type of the food organism, the eating patterns of the fishes maybe grouped into three types:(1 )The zoonekton, comprising 36 species (26. 28% ).(2)The zooplankton, with 22 species (16. 06%).(3)The zoobenthos, with 79 species (57. 66%).According to the diversity of the habitable environment, the fishes may be grouped into fourtypes:(1)The pelagic and mesopelagic fish, with 38 species (27. 74% ).(2)The near demersal fish, with 25 species (18. 25% ).(3)The demersal fish, with 64 species (46. 71 %).(4)The rock fish, with 10 species (7. 30%).

1993年7月至1998年8月对蓬莱沿海定置网渔获的鱼类进行初步调查,结果表明,蓬莱沿海鱼类共有137种,分别隶属于59科108属。根据其适温类型可分为暖水性鱼类34种,占总数的24.82%;暖温性鱼类83种,占总数的60.58%;冷温性鱼类20种,占总数的14.60%。根据食性类型,可分为3类,其中游泳动物食性的鱼类36种,占总数的26.28%;浮游动物食性有22种,占总数的16.06%;底栖动物食性79种,占总数的57.66%.从栖息生境的多样性来看,可分为中上层鱼类38种,占总数的27.74%;近底层鱼类25种,占总数的18.25%;底层鱼类64种,占总数的46.71%;岩礁性鱼类10种,占总数的7.30%。并就渔业开发与保护提出了建议。

To study the microorganism for treating ammonia nitrogen in industrialized culture water at cold temperature, plate count method and most probable number were applied for quantitative detection of microorganism of the biological bead filter for treating ammonia nitrogen in a recycle culture system. At the same time, physical and chemical features of experimental team and controlled team were measured. The result showed that the amounts of nitrobacteria and nitrosobacteria increased continuously and they...

To study the microorganism for treating ammonia nitrogen in industrialized culture water at cold temperature, plate count method and most probable number were applied for quantitative detection of microorganism of the biological bead filter for treating ammonia nitrogen in a recycle culture system. At the same time, physical and chemical features of experimental team and controlled team were measured. The result showed that the amounts of nitrobacteria and nitrosobacteria increased continuously and they reached a stable level at anaphase. There were no denitrifying bacteria at the beginning of the experiment; its amount began to increase at anaphase. Comparing the concentrations of ammonia nitrogen, nitrate and nitrite of experimental team with that of controlled team, we can conclude that the biological bead filter for treating ammonia nitrogen runs well at 12℃. The experiment results indicate that the microorganism treatment, which is domesticated and induced at low temperature condition, is still a feasible approach to treat ammonia nitrogen in industrialized rainbow trout culture water at 12℃, which was deviated from the optimum microorganism growth temperature.

为了研究低温环境下工厂化养殖水体氨氮处理微生物,用平板菌落计数法和最大几率数法对处理养殖水体的生物滤池中的微生物数量进行了跟踪检测,同时测定实验组和对照组养殖水体的理化性质。结果显示在实验过程中,硝化细菌和亚硝化细菌的数量持续上升,后期达到稳定;初期系统中没有反硝化细菌,后期数量开始逐渐增加。实验组与对照组的养殖水体的氨氮、硝酸盐和亚硝酸盐浓度的测定结果证明了生物滤池中的硝化——反硝化系统在发挥作用。实验表明经过低温环境的驯化和诱导,在12℃的低温条件下,微生物处理仍然是工厂化养殖水体中氨氮的有效处理手段。实验验证了在冷水鱼工厂化低温养殖中使用生物滤池处理氨氮的可行性。

 
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