客车玻璃钢前后围开发

针对客车车身的生产特点及需求,从材料、结构、工艺方面全面阐述某客车玻璃钢前后围开发,分析玻璃钢材料、整体式玻璃钢前后围工艺在客车车身开发上的应用优势。     

Study on the toxic effect of the mixture of organophosphorus pesticide on perinatal rats

Objective To observe the toxic effect of the mixture of organophosphorus pesticide （MOP） on maternal rats and on the growth and development of their offspring. Methods Totally 40 Sprague-Dawley pregnant rats were randomly divided into three MOP dose groups and one control to which their offspring would be assigned, The experimental dosage of MOP and distilled water were administered orally starting on gestation day 15 and continued for 35 days. The physical development indices and the learning ability of F1 rats were measured during lactation. The pathological changes of uterus and liver of F0 rats were observed after weaning, while the weight ratio of uterus and some viscera to body of the F1 were examined. Results There were obvious changes of uterus and liver in the high-dose group of F0. The body-weight accretion of the F1 in high-dose group was obviously lower than that in control group （P〈0.05）. Some of the MOP F1 rats development indices delayed significantly （P〈 0. 05）, the learning ability decreased obviously, and the time of setting up memory prolonged （P〈0.05）. The ratio of the uterus weight to bodyweight in the F1 MOP groups was significantly higher than that in control group （P〈0. 05）. Oonclusion The experiment doses of MOP are proved to have significant reproductive toxicity on perinatai rats.     

周至县1992年妇女围产保健情况调查

对周至县1992年分娩孕产妇进行了抽样调查。结果表明:在直接反映孕产妇围产期保健情况的几项主要指标中,除产前检查率、孕3月初检率、新法接生率达到全国农村围产期保健质量乙级标准和要求外,产后出血发生率、住院分娩率和产后访视率均未达到乙级标准;高危住院分娩率仅占22.22％;而且当出现严重合并症和并发症时,及时就诊率只占65.51％。但与该县1989年保健情况调查资料相比,产前检查率、产前检查≥3次率、新法接生率已有明显改善;但产后访视率、住院分娩率未有提高。本次定性调查还显示妇女自我保健意识差,封建思想仍很严重。     

宫内发育迟缓儿的分娩方式与围产儿转归

对１５７例足月体重≤２５００ｇ宫内发育迟缓儿的分娩方式与围产儿Ｌ转归进行了临床分析。结果表明，新生儿出生体重愈低，围产儿死亡率、新生儿窒息率和新生儿并发症的发生率愈高。剖宫产组围产儿死亡率不仅没有下降，反而增加了新生儿窒息率和并发症的发生率。胎吸和产钳助娩组新生儿并发症的发生率明显升高。臀位助娩和臀位牵引的新生儿窒息率、并发症发生率及围产儿死亡率显著高于自然分娩组，故对宫内发育迟缓儿应加强围产保健和产时监护，尽量使其自然分娩；臀位儿以剖宫产为宜。     

1046例围产儿尸检病理分析的临床与优生意义

１９８５年１２月～１９９０年１２月底监测围产儿１５３８８１例，死亡３９５５例，尸检１０４６例，检出畸形５６７例，占５４．２１％，居首位。其次胎儿缺氧、肺炎、颅内出血２６３例（２５．１４％）及妊娠合并症１５４例（１４．７２％）。畸形中检出单纯内脏畸形２２８例（占尸检的２１．８％），以心脏畸形７３例（３２．０２％）最多。体表合并内脏畸形１６８例中以肾畸形５６例（３３．３３％）最多。有５３６例靠尸检证实死亡的原因或检出有关的遗传因素，为进一步产前诊断和优生咨询提供依据。