Determination of complexation capacity of trace metal-organic in natural water

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Zur Biotransformation des 1-Äthinylcyclohexylallophanats-(1)

The Science of Nature -     

A novel L1CAM mutation with L1 spectrum disorders

X-linked hydrocephalus, HSAS (hydrocephalus due to stenosis of aqueduct of Sylvius), MASA (mental retardation, aphasia, shuffling gait, and adducted thumbs), and CRASH (corpus callosum hypoplasia, retardation, adducted thumbs, spastic paraplegia, and hydrocephalus) syndromes are allelic disorders. X-linked hydrocephalus and associated phenotypes are due to mutations in the L1CAM gene, which has been identified as a coding neural cell adhesion molecule. We report two cases of L1 spectrum disorders within the same family. The first case was diagnosed by ultrasonographic examination prenatally and the second case was diagnosed postnatally. Both patients and their mothers carry a novel mutation of the L1CAM gene. In this family, nine X-linked hydrocephalus and five female carriers were found in three generations, and molecular genetic analysis was performed to detect the asymptomatic carriers. Copyright © 2005 John Wiley & Sons, Ltd.     

甲萘酚和甲萘胺在超高交联吸附树脂上的协同吸附行为

研究了水溶液中甲萘酚和甲萘胺在超高交联吸附树脂NDA103、NDA100上的协同吸附行为.实验结果表明,在较高平衡浓度范围内该吸附树脂对双组分水溶液中甲萘酚和甲萘胺双组分(摩尔比分别为3∶1、1∶1、1∶3)的吸附总量大于相同平衡浓度下对单组分水溶液中甲萘酚和甲萘胺的吸附量,呈现协同吸附现象,其主导机制是2种吸附质分子之间的氢键作用.单组分甲萘酚或甲萘胺水溶液和双组分共存水溶液中吸附质分子在吸附树脂上的吸附等温线均符合Langmuir模型.吸附温度由293K升至313K时,甲萘酚和甲萘胺在NDA103上的协同吸附效应的变化明显大于NDA100.NDA103树脂结构上的胺基既加强了对甲萘酚的吸附亲和力又增加了甲萘酚的协同吸附系数.     

厌氧消化1号模型(ADM1)简介

介绍了2002年2月国际水质学会(IWA)推出的厌氧消化1号模型(ADM1).该模型主要描述了厌氧消化中的生化和物化过程,共涉及厌氧体系中的七大类微生物、19个生化动力学过程、3个气液传质动力学过程,共有26个组分和8个隐式代数变量,能够对厌氧生物处理工艺进行较好的预测和模拟.ADM1还提供了开放的建模平台以及与活性污泥模型(ASM)的接口,可广泛应用于对各种厌氧-好氧组合工艺的过程模拟.      

甲型H1N1流感报道的阶段性特征与同质化倾向

甲型H1N1流感疫情自墨西哥大范围暴发以来,引起了各国媒体的高度重视,尤其是中国媒体在吸取2003年非典型肺炎疫情初期集体失语的教训后,对这一国际性卫生防疫灾害事件给予了充分关注。纵观国内媒体对甲型H1N1疫情的报道,根据报道频率和报道内容的不同,大致可以将其分为三个阶段:暴发期、平缓期和反弹期。国内媒体在这三个阶段的报道中各有特点。暴发期表现出了媒介融合、反应迅速和立体报道的特征;平缓期表现为媒体和受众的新闻脱敏与同质化报道倾向;反弹期则出现了初衷与结果的悖离和被动报道的现象。其中对地震报道最大的启发就是要防止同质化倾向,进行差异性报道,使受众对新闻可读、爱读,才能够起到科普宣传的作用。     

ASM1中废水和污泥组分浓度的测定方法研究

对呼吸计量法应用于校准ASM1作了简明的阐述。在呼吸速率与模型组分关系的基础上,介绍了ASM1中废水与污泥各组分浓度的测定方法,并指出模型组分细化的意义。     

ASM1中废水和污泥组分浓度的测定方法研究

对呼吸计量法应用于校准ASM1作了简明的阐述.在呼吸速率与模型组分关系的基础上,介绍了ASM1中废水与污泥各组分浓度的测定方法,并指出模型组分细化的意义.     

Amniotic fluid pregnancy-specific β1-glycoprotein (SP1) in fetal developmental disorders

Concentration of pregnancy-specific β1-glycoprotein (SP1) was studied in second and third trimester amniotic fluid from pregnancies with various fetal developmental disorders. The material consisted of 26 cases with chromosomal disorders and 19 cases with nonchromosomal fetal malformations. The SP1 concentration was elevated in two cases of Meckel's syndrome (mean + 2.7–4.0 S.D.) as well as in one case of fetal triploidy (mean + 22 S.D.), while it was normal in all other 14 different fetal disorders.     

基于环境一号卫星的太湖叶绿素a浓度提取

综合环境一号小卫星的CCD数据和同步地面水质监测数据,发现可见光红波段与近红外波段的波段组合与叶绿素a实测浓度存在较高相关性,并以此为基础建立了3个提取水体表层叶绿素a浓度的遥感信息模型.经验证分析,基于近红外波段与红波段比值的模型用于叶绿素a浓度反演提取的精度良好,RMSE达到了6.04mg/m3.将该模型应用于环境一号卫星CCD数据,生成了2009年5~12月共8幅太湖水体叶绿素a浓度分布图,并对其进行了时空分析,结果符合实际,并与以往的研究结果相一致.但模型不适用于水生植被覆盖较多区域叶绿素a浓度估算.