共查询到20条相似文献,搜索用时 140 毫秒
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安阳钢铁、鞍钢股份、八一钢铁、包钢股份、宝钢股份、小钢板材、杭钢股份、河北钢铁、华菱钢铁、山东钢铁、酒钢宏兴、凌钢股份、柳钢股份、码钢股份、南钢股份、三钢闽光、沙钢股份、韶钢松山、首钢股份、太钢不锈、武钢股份、新钢股份、 相似文献
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《不锈(市场与信息)》2009,(24):1-2
国家拟出台进一步加强淘汰落后产能工作的通知,协调发改委、工信部、环保部、国土部、商务部、海关总署、财政部、央行、银监会、质检总局、安监总局、工商总局、电监会、能源局等,以严厉措施,重点完成电力、煤炭、钢铁、水泥、有色、焦炭、造纸、皮革、 相似文献
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Thirty strains of bacteria were randomly isolated and identified from buckwheat seeds. The phenotypic characteristics of these strains agree well with those of the Enterobacter agglomerans-Erwinia herbicola complex. On the basis of the difference in indole production and gas production from D-glucose, the isolates were divided into 3 phenotypic groups, viz. I, II and III. Twenty two strains were in phenotypic group 1, which is negative for indole production and gas production from D-glucose, and resembles Pantoea agglomerans. All six strains in phenotypic group II, which is positive for indole production and negative for gas production from D-glucose, were identified as Erwinia ananas. Two strains in phenotypic group III, which is negative for indole production and positive for gas production from D-glucose, were identified as Rahnella aquatilis. 相似文献
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K Funatogawa M Matsuura M Nakano M Kiso A Hasegawa 《Canadian Metallurgical Quarterly》1998,66(12):5792-5798
Lipid A is the active center of bacterial lipopolysaccharide (LPS), which exhibits diverse biological activities via the production of various mediators. We investigated the production of nitric oxide (NO), one of the mediators, by a murine macrophage cell line, RAW264. 7, upon stimulation with a series of monosaccharide lipid A analogues to elucidate the relationship of structure and activity in NO production. The production of other representative mediators, such as tumor necrosis factor alpha (TNF-alpha) and interleukin-6 (IL-6), was also investigated to compare the structural requirements for the production of these cytokines with those for the production of NO. Structure-activity relationships in NO production correlated well with those in the production of TNF-alpha and IL-6. Among the lipid A analogues possessing different numbers of acyl groups on a 4-O-phosphono-D-glucosamine backbone, compounds like GLA-60 that possess three tetradecanoyl (C14) groups exhibited stronger activities in the production of the mediators than compounds possessing four or two C14 groups. Time course study of the production of these mediators showed that production of NO started and peaked later than those of TNF-alpha and IL-6. Neither neutralization of TNF-alpha activity by antibody nor suppression of TNF-alpha production by pentoxifylline showed a significant suppressive effect on production of NO and IL-6 upon stimulation with LPS or lipid A analogues. Neutralization of IL-6 activity by antibody showed no significant suppressive effect on production of NO and TNF-alpha. A monosaccharide lipid A analogue (GLA-58) which exhibited no detectable agonistic activity showed a suppressive effect on the production of all three mediators upon stimulation with LPS or lipid A analogues. These results indicate that signals for NO production by LPS agonists in murine macrophages are transduced in good correlation with those for production of TNF-alpha and IL-6, although they are not transduced via production of those cytokines. 相似文献
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广西锰矿矿山安全生产的形势严峻,需要引起足够重视。从广西锰矿矿山安全生产入手,对当前广西锰矿矿山安全生产不足进行全面地分析,并对怎样改善锰矿矿山安全生产状况进行了探讨和分析,提出一些行之有效的对策,力求更为全面、系统地为锰矿矿山安全生产提供参考。 相似文献
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以烧结工艺理论为指导,从生产出发,建立了南钢烧结生产优质高产的数学模型,并进行了系统优化,得到了工艺参数,在此基础长对长期处于“同步控制状态”的烧结生产进行了分析,提出了烧结生产中优质高产的“异步控制论”。 相似文献
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The influence of temperature and pH on growth of Leuconostoc mesenteroides subsp. mesenteroides FR52 and production of its two bacteriocins, mesenterocin 52A and mesenterocin 52B, was studied during batch fermentation. Temperature and pH had a strong influence on the production of the two bacteriocins which was stimulated by slow growth rates. The optimal temperature was 20 degrees C for production of mesenterocin 52A and 25 degrees C for mesenterocin 52B. Optimal pH values were 5.5 and 5.0 for production of mesenterocin 52A and mesenterocin 52B respectively. Thus, by changing the culture conditions, production of one bacteriocin can be favoured in relation to the other. The relationship between growth and specific production rates of the two bacteriocins, as a function of the culture conditions, showed different kinetics of production and the presence of several peaks in the specific production rates during growth. 相似文献
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