特征分析方法优化大气监测布点及MATLAB语言实现

提出了运用特征分析方法优化大气监测布点,并介绍了该方法的MATLAB语言实现过程。应用于大气监测优化布点的实例结果表明,该方法用于监测优化布点是可靠的。     

铜自热熔炼烟气生产焦亚硫酸钠

扼要报道用碳酸钠溶液吸收法处理金川铜自热熔炼烟气生产焦亚硫酸钠的研究成果     

大气自动监测系统在炼油厂的应用

运用日本引进的大气自动测定仪组成炼油厂的大气环境自动监测系统。运行结果表明，该系统自动化程度高，故障率低，操作简便，数据齐全，它的建立使我厂的大气环境监测上了一个新台阶．     

水质综合评价灰色理论模型及其应用

根据灰色关联度的定义，运用广义加权距离构造目标函数，建立了一种水质综合评价的灰色理论模型。综合实例说明了该模型的应用，得到与用其它方法评价完全一致的结果，该模型数学推导严谨，科学合理，分辨率高，可靠性强 。     

粉煤灰分选工艺流程的改进

利用闲置设备进行流程改进，提高了粉煤灰的利用率，解决了制砖所需的细骨料。每年节省运灰费用２００多万元，具有良好的经济效益和环境效益     

First and early second-trimester diagnosis of fetal urinary tract anomalies using transvaginal sonography

Urinary tract anomalies are common. Prenatal diagnosis is important and enables either special obstetric management or termination of pregnancy and probably in the future, intrauterine intervention. Transvaginal sonography (TVS) allows visualization of the normal and anomalous fetal urinary tract at an early stage. One thousand nine hundred and forty women were examined via TVS at an early stage of pregnancy between 10 and 16 weeks from the last menstrual period (LMP) and 35 anomalies (1·8 per cent) were clearly identified: 29 cases of low urinary tract obstruction, 2 cases of multicystic dysplastic kidney, 2 cases of polycystic kidney (infantile type), 1 case of double collecting system, and 1 case of horseshoe kidney. Potter syndrome could be ruled out in three patients who had delivered fetuses suffering from this anomaly in previous pregnancies. The concise and early identification of anomalies makes TVS an important aid in the hands of the obstetrician, ultrasonographer, and neonatologist.     

几种重金属对皱纹盘鲍血细活性氧产生的影响

体外条件下利用化学发光法定量地研究了不同种类和不同浓度的重金属:Cr、Cd、Hg、Pb、C和Zn对皱纹盘鲍血细胞吞噬时活性氧产生的影响。结果表明,不同种类和不同浓度的重金属浸泡急性处理皱纹盘鲍血细胞都不同程度地抑制了血细胞吞噬时的化学发光,表明重金属能够抑制皱纹盘鲍血细胞吞噬活动中的活性氧(ROS)的产生,而且这种抑制作用随着重金属浓度的增加而加强。不同的重金属抑制强度不同,从强到弱以次为Hg>Cd>Cu>Pb>Cr>Zn。研究表明六种重金属中,Hg对皱纹盘鲍血细胞的免疫毒性最大。     

Effect of leachate recycling and inoculation on the biochemical characteristics of municipal refuse in landfill bioreactors

Activity development of key groups of enzymes involved in municipal refuse decomposition was measured in laboratory landfill bioreactors with and without leachate recycling and inoculation for about 210 days.The results showed that the enzymes(amylase,protease,cellulase,lipase and pectinase)were present in fresh refuse but at low values and positively affected by leachate recycling and refuse inoculation.The total average of cellulase activity in digesters D3 operated with leachate recycling but no inoculation,D4 and D5 operated with leachate recyling and inoculation was much higher than that in digesters D1 and D2 without leachate recycling and inoculation by 88%-127%,117%-162%and 64%-98%.The total average of protease activity was higher in digester D4 than that in digesters D1,D2,D3and D5 by 63%,39%,24%and 24%,respectively,and the positive effect of leachate recycling and inoculation on protease activity of landfilled refuse mainly was at the first two months.The total average of amylase activity was higher in digesters D3,D4 and D5 than that in digesters D1 and D2 by 83%-132%,96%-148%and 81%-129%.During the early phase of incubation,the stimulatory effect of inoculation on lipase activity was measured,but refuse moisture was the main factor affecting lipase activity of landfilled refuse.The inoculation,initial and continuous inoculation of microorganisms existing in leachate,was the mainly stimulatory factor affecting pectinase activity of landfilled refuse.