ABR反应器的设计

类似于多个UASB反应器串联起来运行的ABR反应器具有多种其它反应器不具备的优点，在处理化工颜料黄高盐生产废水的工程中，结合将高效复合微生物技术用于厌氧水解一连续曝气生化工艺取得成功；对ABR反应器而言，正确的设计参数是工程运行成功的保证。     

An accessory marker derived from chromosome 20 and its co-existence with a mosaic trisomy 20 cell line

We report a 16-month-old boy with delayed psychomotor development, dysmorphic features, and failure to thrive. He had a mosaic karyotype detected prenatally: mos 46,XY/47,XY,+r(20)/47,XY,+20. After birth, the abnormal cell lines were confirmed in a number of tissues. The small ring chromosome was identified using fluorescence in situ hybridization as derived from chromosome 20. We compared our patient with previously reported cases of mosaic trisomy 20 detected prenatally and associated with an abnormal phenotype. In an attempt to characterize an r(20) syndrome, we also compared our case with two similar reports in the literature.     

Early prenatal diagnosis of an infratentorial arachnoid cyst: Association with an unbalanced translocation

Arachnoid cysts are an uncommon central nervous system malformation, representing only 1 per cent of all intracranial masses. We report the second-trimester prenatal diagnosis of a posterior fossa arachnoid cyst, associated with an unbalanced X;9 translocation.     

效益型资源化啤酒废水处理技术应用及效果

本项处理技术屏弃了以往环境处理技术沿用的生产末端处理路线.根据啤酒生产工艺特点,在全面分析,平衡工艺废水的特性,数量及排放规律的基础上提出综合治理方案,着重于从废水中提取有用物质和能源,治理过程中把废水当做资源加以利用,而且具有明显低投入高增益的经济效益.装置2年来运行结果证明:核心技术——UASB 高效,实用,易操作,运行稳定居国内领先水平,其主要技术指标达到国内外同类研究的先进水平.该项技术可在啤酒行业及以粮食为原料的其它酿造行业和食品加工业中推广应用,并已被国家科委列为《国家级科技成果重点推广计划》及国家环保局最佳实用技术.     

近地面臭氧污染过程和相关气象因子的分析

为了了解₃的污染过程,进行了包括全天24h₃浓度和气象参数的观测。分析了高浓度₃日的气象条件,表明高压天气形势、晴天少云、日照持续、气温升高、湿度低、温度垂直梯度和Ri数较高等是形成高浓度₃的有利条件。从₃浓度全天24h的观测结果发现,除12:00～14:00的主峰外,在0:00～4:00还有一个次峰。所有例子都表明₃浓度日变化和各气象因子有着很好的对应关系,值得注意的是,当风速和太阳辐射同步增减时,共同促使₃浓度增大,使₃在中午出现显著的峰值,当风速值出现在其他时间时,也可以使₃出现次峰。      

Prenatal diagnosis and post-mortem study of a fetus with mosaic trisomy 14 due to a dic(14)(p11)

Amniocentesis at 17 weeks' gestation revealed a mosaic karyotype—46,XX/46,XX, — 14,+dic(14)(p11). No abnormalities were detected on ultrasound. Growth and placentation were normal. The fetus was examined after termination of pregnancy and micrognathia and pulmonary hyperlobation were the only abnormalities detected. Several tissues were set up for cytogenetics, including fetal skin, kidney, ovary, and placenta. The diagnosis was confirmed by these studies. The level of mosaicism varied between tissues, with the trisomy 14 cell line highest in amniotic fluid.     

Characterization of marker chromosomes by microdissection and fluorescence in situ hybridization

We characterized by microdissection and fluorescence in situ hybridization (FISH) two marker chromosomes: (1) a de novo, acrocentric marker chromosome detected in 88 per cent of the amniotic fluid cells of one of two physically and developmentally normal twins; and (2) a metacentric marker chromosome present in a phenotypically normal female. Analysis of FISH probes developed from the marker chromosomes indicated that the marker chromosomes in cases 1 and 2 were del(14)(q11) and a derivative chromosome from a Robertsonian translocation, respectively. Microdissection in combination with FISH may prove to be a valuable technique in determining the chromosomal origin of de novo marker chromosomes and unbalanced structural rearrangements detected during prenatal diagnosis.     

循环热处理对高速钢超塑性的影响

此文研究了循环热处理工艺对W6Mo5Cr4V2钢超塑性的影响.结果表明:该钢在1040℃两次循环淬火是实现其超塑性的最佳热处理工艺;按此工艺进行预处理后,在810℃、初始应变速率为5.56×10~(-1)s~(-1)的条件下,该钢的超塑延伸率可达187%.     

植被混凝土在官地水电站的试验分析

本文主要对官地水电站高陡边坡植被混凝土前期绿化试验成果进行分析,以寻求在干湿季节明显、雨量集中、干旱季节漫长、温度高、蒸发量大等干热河谷气候特征条件下的最佳生境构筑方法,为官地水电站乃至雅砻江流域水电工程高陡边坡生态恢复提供技术依据。     

高浓度农药废水的治理方法介绍

通过对佳木斯农药三厂污水治理技术的研究 ,介绍一种先进的农药废水处理方法及实用技术。