复方中和剂对隐形眼镜护理液中和效果观察

目的观察复方中和剂对隐形眼镜护理液中和效果。方法采用悬液定量杀菌试验程序,对由硫代硫酸钠、卵磷脂、吐温组成的复方中和剂中和含有双胍类杀菌成分的隐形眼镜护理液的效果进行了检测。结果用含5g/L硫代硫酸钠、5 g/L卵磷脂、10 g/L吐温80组成的复方中和剂可有效中和含双胍类和表面活性剂的隐形眼镜护理液的残留作用,中和剂鉴定试验结果符合规范规定的技术指标。结论鉴定试验证明,该复方中和剂可用于含双胍类杀菌成分的隐形眼镜护理液杀菌试验。     

稳定型含氯消毒剂消毒性能的研究

目的研究稳定型含氯消毒剂消毒效果及其有关性能。方法采用悬液定量、定性杀菌试验和动物试验方法,对该消毒剂的消毒相关性能进行了试验观察。结果该稳定型含氯消毒剂原液有效氯含量为63 g/L,经37℃存放90 d,有效氯含量下降率为9.05%。用含有效氯1 200 mg/L的该稳定型含氯消毒剂作用40 m in,对悬液内枯草杆菌黑色变种芽孢的平均杀灭对数值5.00。含有效氯600 mg/L的消毒剂作用5 m in,对悬液内脊髓灰质炎病毒灭活对数值4.00。含有效氯300 mg/L的该消毒剂作用2.5 m in,对悬液内大肠杆菌和金黄色葡萄球菌杀灭对数值均5.00。该稳定型含氯消毒剂小鼠急性经口LD505 000 mg/kg(体重);对小鼠骨髓嗜多染红细胞微核试验结果阴性。含有效氯1 200 mg/L该消毒剂溶液对家兔一次完整皮肤刺激试验结果为无刺激性。结论该稳定型含氯消毒剂性能稳定,对悬液内病毒、细菌繁殖体和细菌芽孢杀灭效果较好,属于实际无毒级物质。     

拉萨市140例甲型H1N1流感确诊病例分析

目的:通过分析西藏自治区拉萨市140例甲型H1N1流感病例的诊治情况,总结防治措施,积累高原地区甲流患者的临床救治经验.方法:对2009年9月9日至12月20日西藏自治区人民医院收治的140例甲型H1N1流感病例进行回顾性分析.结果:所有病例都为本土病例.疫情的流行出现2个高峰,男78例,女62例,男女之比为1.26:1;年龄5个月～71岁,以20～29岁组最为多见,共有44例,占31.4%;职业分布以学生居多,占25%(56/140);民族分布中,汉族60例,藏族78例,回族2例;有症状的占总病例的94%(132/140),症状最多的是发热98.48%(130/132)、全身肌肉疼痛51.5%(68/132)、流涕36.36%(48/132)、咽痛30.3%(40/132)、头痛18.2%(24/132)、咳嗽16.66%(22/132)、乏力12.1%(16/132);有基础疾病的5例,其中高原红细胞增多症3例、高血压2例、过敏性鼻炎2例;9例甲型H1N1流感病例的发生有学校聚集现象:治疗上没有1例经抗病毒药物奥司他韦治疗.结论:在西藏地区人群对甲型H1N1流感普遍易感,以青壮年多见:根据流行病史、临床表现和实验室结果可作出甲型H1N1流感的明确诊断,采取切合实际的隔离治疗传染源、切断传播途径的措施能有效防控甲型H1N1流感的流行.轻症的甲型H1N1流感患者不需积极应用奥司他韦治疗,应用普通的抗病毒药物(抗病毒冲剂、利巴韦林)有效.     

含氯消毒液氧化还原电位与杀菌效果关系的研究

目的研究一种含氯消毒粉水溶液氧化还原电位变化与其杀菌效果的关系。方法以悬液定量杀菌试验方法对该消毒液不同氧化还原电位条件下杀菌效果进行了观察。结果以含有效氯50 mg/L不变的条件下,该消毒液的氧化还原电位分别为700、800、900、980 mV,对悬液内大肠杆菌作用5 min,杀灭对数值分别为2.45、2.83、6.75和6.75;对金黄色葡萄球菌作用5 min,杀灭对数值分别为2.22、3.11、6.41和6.41。以含有效氯300 mg/L,氧化还原电位分别为900、980、1050 mV,对枯草杆菌黑色变种芽孢作用30 min,杀灭对数值分别为0.79、2.91和6.23。结论提高含氯消毒剂的氧化还原电位值,可明显提高其杀菌能力。     

细菌快速检测试纸片法与传统方法培养结果的比较

目的比较细菌快速检测试纸片法与传统的方法在细菌检测结果上的差异。方法用试纸片法对物体表面污染菌总数和大肠杆菌进行检测,同时与传统方法作平行比较。结果检测细菌总数,用常规方法培养48 h后,细菌生长正常;而纸片法培养48 h,营养琼脂平板上无菌生长,继续培养至72 h才出现菌落。大肠菌群检测中,传统9管发酵法培养24h即有菌生长,国产大肠菌群快速检测试纸法培养36 h和日本产试纸片培养48 h才出现肉眼可见菌落。结论细菌快速检测试纸片虽能简化操作,但存在技术缺陷,且成本高。     

SQA鳌合盐的急性毒性和致突变性研究

目的 检测稀土壳糖胺(SQA)鳌合盐的急性毒性和致突变性。方法 采用霍恩氏法进行急性经口毒性试验，采用小鼠骨髓嗜多染红细胞微核试验、小鼠精子畸形试验和Ames试验对受试物进行致突变性研究。结果 SQA鳌合盐的经口LD50＞10000mg／kg体重；小鼠骨髓嗜多染红细胞微核试验显示无诱发微核作用，小鼠精子畸形试验未见精于畸形率增高，Ames试验在加和不加S9条件下均无致突变性。结论 SQA鳌合盐属实际无毒级物质，在该实验条件下，无致突变作用。     

青藏高原鼠疫耶尔森菌基因型分布

目的研究青藏高原鼠疫耶尔森菌（鼠疫菌）基因组型分布特征.方法对分离到的青藏高原鼠疫菌297株,根据已经证实的22个差异区段设计引物,每株鼠疫菌的每个基因差异区段都采用PCR技术进行验证.结果在喜马拉雅旱獭鼠疫自然疫源地中,鼠疫菌基因组型有9种,分别为1、5、6、7、8、10、11、新基因组型和Ype-ancestor型,其中以5、8和10型为主,3种基因组型合计所占比例为80.6%（204/253）,而且不同地区鼠疫菌基因组型的分布也不一致.青藏高原青海田鼠鼠疫疫源地鼠疫菌基因组型全部为14型.结论青藏高原鼠疫菌基因组型分布具有明显的地理特征.根据基因组型的分布状况推测出了鼠疫菌在青藏高原的传播路径.     

Correlations between mean LH levels and LH pulse characteristics: differences between normal and anovulatory women

OBJECTIVE: Since LH secretion occurs as a series of pulses, relationships between mean LH levels and LH pulse characteristics are to be expected. The aim of this study was to determine whether such relationships are similar in normal women and anovulatory patients. DESIGN: We studied the correlations between mean LH levels and the products amplitude x frequency and area x frequency of LH pulses in normal women and in patients with disorders of ovulation. Blood samples were taken from each subject every 10 minutes during 6 hours on the 8th day after the last menses. PATIENTS: The patients were divided into three groups: patients with polycystic ovary syndrome (n = 11), patients with idiopathic anovulation (n = 14) and patients with short luteal phase (n = 13). Their results were compared to those of 12 normal women. MEASUREMENTS: LH was evaluated with an immunoradiometric assay. LH data were analysed with a 3 standard deviation threshold criterion for significant peaks, and with cluster analysis algorithm using 1, 2.5 and 5% false positive error rates and 'optimal parameters' (which give less than 5% false positive and false negative error rates in LH male data). RESULTS: Highly significant correlations between amplitude x frequency, area x frequency and mean LH were found in normals and patients with short luteal phase; no significant correlation was found in patients with polycystic ovary syndrome, while significant correlations were found in patients with idiopathic anovulation only with some of our criteria for peak detection. CONCLUSION: The differences that we found between the groups suggest that when commonly used methods are employed to determine LH pulse characteristics, most of the significant LH pulses are taken into account in normals and patients with short luteal phase, but not in anovulatory patients, especially in patients with polycystic ovary syndrome. This method using two correlations appears to be a simple and useful way to show the differences in the mechanisms by which mean LH levels are achieved in normal subjects and patients.     

藏药石榴日轮丸的质量标准研究

目的：建立常用藏药石榴日轮丸的质量标准。方法：薄层色谱鉴别和薄层扫描含量测定。结果：鉴别出石榴日轮丸肉桂、红花和西藏棱子芹等药材，阴性样品对鉴别无干扰；测得石榴日轮丸中胡椒碱含量为0．4－0.5mg。结论：该研究提高了本品质量标准的专属性和规范性。