农村水质监测及饮水安全调查分析

目的 开展农村水质监测及饮水安全工程调查,了解农村饮水安全工程水质卫生状况.方法 以水利部门提供的农村饮水安全工程的资料为依据,对浙江省44个县(市、区)的725处农村饮用水供水工程开展水质卫生监测.结果 浙江省农村饮水工程饮用水总合格率为52.93%,消毒合格率为34.51%;在丰水期出厂水不合格指标中,微生物指标占68.94%,感官和化学指标占29.43%,毒理学指标占1.62%.结论 浙江省农村饮水安全工程建设已经取得一定成绩,但是饮水安全问题还存在一些问题,需要在各有关部门重视下不断改善.     

B90催化剂上丁烯氧化脱氢的反应动力学─一一种简便的建立化学动力学方程的方法

采用简便的建立化学反应动力学方程的方法，研究了Ｂ９０催化剂上丁烯氧化脱氢制丁二烯反应的动力学，即先在一较低温度下，用微分法拟合得到化学反应动力学方程中的浓度项，然后改变反应温度，求算不同温度下的反应速率常数。采用这个简便方法，只需较少的实验，即可求得该反应体系中的丁烯转化速率方程式。     

脾虚证计量诊断的前瞻性研究

以本研究所修订的“脾虚证诊断标准”为金标准，通过以整群抽样取得的５４９例各科各系统病人（包括脾虚２２９例，非脾虚３２０例）的四诊资料对笔者以往建立的“脾虚证诊断计分表”的诊断效果做了前瞻性的研究。该计分表诊断脾虚证的几项主要评价指标的结果为：患病率４１．７％，准确度９１．３％，敏感度９３．０％，特异度９０．０％，阳性预测值８６．９％，阴性预测值９４．７％，阳性拟然比９．３０，阴性拟然比０．０８，诊断效果满意。     

自制新荧光剂EPQS的性能测试

作者对自制新荧光剂EPQS进行了性能测试。结果:量子产率为0.21;最大激发波长和荧光波长分别为375nm和484nm,stokes位移109nm;检测生物化合物常用的缓冲溶液对荧光峰位无影响,对荧光强度影响很小;温度的影响也小(18～43℃,FRI61.5～58.1),PH的影响也不大。说明EPQS不仅荧光参数好,而且稳定性也好。适合在较广泛的环境条件下使用。     

气功对冠心病人CM_5ST段/心率斜率的影响

37名冠心病患者随机分为气功治疗组(22人)和对照组(15人)。气功治疗组接受12周动功治疗,对照组接受安慰剂治疗,治疗前后均测定CM_5 ST段/心率斜率。结果发现动功治疗组CM_5 ST段/心率斜率减少,而对照组不变或增大,两组有显著性差异,ST段下移及常规分级运动试验其它指标在两组间无显著差异。表明CM_5ST段/心率斜率是一个敏感的心肌缺血指标。     

重型颅脑损伤并发急性呼吸窘迫综合征危险因素分析

目的　探讨重型颅脑损伤并发急性呼吸窘迫综合征 (ARDS)的危险因素。方法对 2 4例重型颅脑损伤并发ARDS患者的临床资料进行回顾性分析 ,分析年龄、性别、GCS评分、肋骨骨折、肺挫伤、血气胸、呕吐误吸、PaO2 /FiO2 等相关因素与急性呼吸窘迫综合征的关系。结果年龄、GCS评分、肋骨骨折、肺挫伤、血气胸、呕吐误吸、PaO2 /FiO2 等因素统计学分析有显著性差异 (P <0 .0 5 )。结论年龄、GCS评分、胸部外伤程度、呕吐误吸是重型颅脑损伤并发急性呼吸窘迫综合征的危险因素 ,PaO2 /FiO2 是判断伤情发展趋势的重要指标。     

芳香烃羟化酶活性与苯并[a]芘中间代谢产物生成关系的研究

100mg香烟烟油,多氯联苯诱导大鼠肝S_9组分中芳香烃羟化酶代谢B[a]P为3-OH-B[a]P的活性分别升高约40,20倍,而代谢B[a] P生成6-OXY-B [a]P自由基产物却仅由多氯联苯诱导的S_9组分作用中才被观察到。     

The liver first pass effects and bile concentrations of (-)-, (+)- and (+/-)-praziquantel in rabbits

Praziquantel (PQT) is a racemic mixture. Intragastric gavage of (-)-, (+)- and (+/-)-PQT 100 mg/kg were used to study the liver first pass effects in rabbits. HPLC was used to determine the concentration of each compound in the portal and systemic circulation, and in the bile within 4h. The results showed that all drugs were absorbed rapidly from the gut into the portal vein. The serum concentration in the portal vein were similar. However, over 90% of PQT and its enantiomers were extracted in the first passage through the liver. Intrinsic metabolic clearances of the liver of (-)-, (+)- and (+/-)-PQT were 50.3, 174.4 and 52.6 L/h, respectively. The serum concentrations of the three drugs markedly decreased in the systemic circulation, especially that of (+)-PQT. The AUC of (+)-PQT was apparently lower than that of (-)- or (+/-)-PQT. From these results, it is assumed that the first pass effects of PQT and its enantiomers in the liver are pronounced and most likely stereoselective. Also, unchanged PQT and its enantiomers were found in the bile of the rabbits.     

钬激光腔内治疗泌尿系结石(附126例报告)

目的：探讨泌尿系结石腔内钬激光治疗效果及安全性。方法：总结钬激光结合腔内泌尿外科技术治疗126例泌尿系结石的临床资料。结果：5例肾结石和11例膀胱结石，均一次碎石成功，109例输尿管结石，单次碎石率为96.3%(105/109)，复杂结石1例数次行输尿管腔镜下碎石。平均结石排净时间2.8周，平均手术时间30min，平均术后住院2d。术中除1例输尿管穿孔外，无其他并发症。结论：钬激光结合腔内泌尿外科技术治疗泌尿系结石，是一种较新的、安全的、有效的方法。     

持续压力超负荷对兔左心室细胞凋亡的影响

OBJECTIVE: To study the effect of chronic pressure overload on the apoptosis of the left ventricle myocytes in rabbits. METHODS: Rabbit models of chronic pressure overload-induced heart failure were prepared in which dynamic changes of apoptotic myocytes in the left ventricle were observed by way of terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay. RESULTS: Only a few apoptotic cells was observed in the sham-operated group, while in the experimental group, the apoptotic left ventricle myocytes significantly increased after operation, presenting a peak level between day 3 and day 7. Seven days after the operation, the apoptotic myocytes began to decrease and till day 14, the apoptotic cell number had been smaller than that measured on day 1. When signs of heart failure set in, the apoptotic myocytes were again increased (P<0.001). CONCLUSION: During chronic pressure overload, myocyte apoptosis in the left ventricle is elevated at the early stages and undulates subsequently, with the peak occurring before hypertrophy is obvious.