乳铁蛋白在动物防御系统中的作用

<正>乳铁蛋白(LF)最初在牛乳中发现,后来发现这种蛋白质也广泛地存在于猪、鼠、人及其它哺乳动物的唾液、泪液、支气管粘液、胆汁、胰液等外分泌液以及嗜中性粒细胞次级颗粒和血浆中。正常生理条件下LF在血浆中含量很低,而富含于各种外分泌液和嗜中性粒细胞的次级颗粒中。     

雏鹅氨气中毒的诊治

一发病情况 本镇李某购进太湖雏鹅1000只,在一面积60余平方米的塑料薄膜棚内育雏。该棚没有门窗,四面塑料薄膜下垂到地面,用砖头和木板压紧,内装有6只250W红外线灯作取暖用。雏鹅在11日龄前一切正常,12日龄时有4只死亡,以后每天都有死亡,至3月5日现场检查发现,棚内共死亡56只。     

德菲尔法构建重大动物疫病预警指标体系

[目的 ]构建重大动物疫病暴发流行预警指标体系。[方法 ]以禽流感和口蹄疫为例,采用文献调研法和德菲尔专家咨询法中的专家会议法初拟重大动物疫病预警体系的框架和指标;应用德菲尔专家咨询法评价预警指标的重要性、可操作性;应用组合权重法比较各指标综合影响的大小,并将指标分类。[结果 ]筛选出禽流感和口蹄疫预警预报一级指标6项(易感动物、饲养管理和免疫情况等)以及二级指标14项(免疫效果、环境消毒、温度等),并将指标分为三类(关键指标、重要指标和一般指标)。[结论 ]初步构建了重大动物疫病暴发流行预警指标体系。     

塔落岩黄芪、细枝岩黄芪及其变异型的生理特性研究

本文研究了毛乌素沙漠地区塔落岩黄芪和细枝岩黄芪及其变异型的生理学特性。结果表明,塔落岩黄芪和细枝岩黄芪各与其变异型之间在生理特性方面存在着极其显著的差异。     

杂交狼尾草亲本的开花特性

杂交父本象草Ｎ５１是对光照最为敏感的短日照作物,每日９ｈ,光照处理２～３周,能有效地诱导抽穗开花。象草的穗由分蘖穗和分枝穗组成,由于单株分蘖穗和分枝穗发育程度的差异和群体中个体间的差异致使Ｎ５１群体散粉期可达３０ｄ,散粉高峰期２周。母本Ｔｉｆｔ２３Ａ在南京能完成生育过程,开花期与播期有关,相关系数为０．８８６,群体散粉期与Ｎ５１同样有３０ｄ。由于亲本花期长,因此花期能很好地相遇、杂交、结实     

热敏电阻冰点仪法测定生鲜牛乳中冰点的研究

利用热敏电阻冰点仪法测定生鲜牛乳中的冰点,对该方法的重复性、灵敏度以及掺水掺盐对生鲜牛乳冰点值的影响等方面进行了研究.此方法的检测极限值为2.4 m℃.     

Synergistic effects of Miconazole and Polymyxin B on microbial pathogens

The therapeutic value of antibiotics depends on the susceptibility of the infecting microorganism and the pharmacological profile of the drugs. To assess the value of an antibiotic combination of polymyxin B and miconazole this study examined the in vitro synergistic potential of the two drugs on Gram-negative and Gram-positive bacteria and yeast. Antifungal and antibacterial activity was tested by minimum inhibitory concentration (MIC) of broth macrodilution and urea broth microdilution, by fluorescence microscopy and flow cytometry. Synergism was calculated using the fractional inhibitory concentration index (FICi). With Staphylococcus intermedius as target we found up to an eightfold reduction of the individual MICs when both drugs were combined. However, the FICi was 0.63 suggesting no real interaction between the two drugs. With Escherichia coli, Pseudomonas aeruginosa, and Malassezia pachydermatis as targets the antimicrobial drug combination reduced the MICs of polymyxin B and miconazole from fourfold to hundredfold resulting in FICi between 0.06 and 0.5 which defines a synergistic action. Thus, if polymyxin B and miconazole are combined their effect is greater than the sum of the effects observed with polymyxin B and miconazole independently, revealing bactericidal and fungicidal synergism. Our results indicate a strong therapeutic value for the combination of these antimicrobial agents against Gram-negative bacteria and yeast and a weaker value against Gram positive bacteria for clinical situations where these pathogens are involved.     

刑侦犬锁定"苦行僧"毒贩--云南腾冲"3·12"特大跨国贩毒案侦破纪实

这是一起在云南警方组织开展的“天网三号”禁毒专项行动中多警种协作、群众踊跃参与、警犬投入侦破的典型案例:2006年3月12日,当3名嫌疑人面对从两公里外查获的3背包沉甸甸的毒品海洛因及其他赃物拒不认罪、案件侦查陷入僵局时,刑侦犬“安普贵”奉命出击,把毒品和毒贩锁定在一     

巴比妥类镇静剂的检测研究进展

本文对巴比妥类安眠镇静剂检测方法的研究进展进行了综述。重点讨论了样品前处理方法及各种衍生化方法,GC、GC-MS、HPLC、HPLC-MS等检测方法。