Types of participatory research based on locus of decision making

文章以环太湖53条出入湖河流为研究对象,测定2009年12月至2010年3月间（枯水季节）溶解态重金属含量,结果表明Mn、Ni、Cu、Zn、Cr、As等六种重金属溶解态浓度含量均较低,且未超标。将53条河流出入湖区域分为无锡常州区、宜兴区、湖州区、苏州区四个区域,无锡常州区除Cd外,其它重金属含量最高;Cd在宜兴区含量最高,湖州区含量次之,且超标现象严重;苏州区河流由于大部分时间出湖,故各重金属含量最低,水质最好

Optimized Algorithm for Determining Dominant Wavelength of LED

从发光二极管主波长的定义出发,比较分析了计算发光二极管主波长的3种方法,并提出了一种优化的计算方法。先将色品图划分为10个区域,再结合线性插值运算,可以减少运算次数、提高寻找速度,简化了求主波长的计算过程,同时使主波长计算结果的精确度优于0.1 nm。A novel algorithm to determine the dominant wavelength of LED is proposed based on the definition of dominant wavelength and the comparisons of three conventional calculation methods.To realize this algorithm,the CIE1931-xy Chromaticity Diagram is divided into 10 different regions within the wavelength range from 380.0?nm to 780.0?nm with a resolution of 1.0?nm,then the linear interpolation is implemented to locate the dominant wavelength with a resolution as precise as 0.1?nm.This algorithm not only very facilitates the calculation speed to determine the dominant wavelength of LED,but also increases the resolution precision.国家863计划“半导体照明工程”重大项目(2006AA03A175);; 福建省重点科技项目(2006H0092);; 厦门大学科技创新项目(XDKJCX20051011

Bioinformatics analysis of QM-like(PcQM) protein from Pseudosciaena crocea

[目的]通过分析PCQM蛋白质的结构,预测其高级结构和功能,为进一步研究PCQM蛋白提供理论依据。[方法]利用blAST P和相关分析蛋白质理化性质与结构的软件,对PCQM蛋白进行结构与功能预测分析。[结果]PCQM蛋白不存在n端信号肽,存在多个酶切位点,无跨膜结构,定位在细胞质中。不存在二硫键,该蛋白含26.05%α-螺旋结构(H),20.93%β-折叠结构(E),53.02%无规则卷曲(l)。最后,通过SWISS-MOdEl程序预测了PCQM蛋白的三级结构。[结论]较全面地分析和预测了PCQM蛋白的理化性质、二级结构和三级结构等。为深入分析PCQM在大黄鱼(lArIMICHTHyS CrOCEA)体内免疫调节功能研究,提供了理论依据。[Objective]The purpose of this study was to learn more function of PcQM protein by analyzing the AA sequence and predicting the structure of it.[Methods]Some related bioinformatics analysis software or system on internet such as Blast P,Predict Protein,Swiss-Model,was used to analyze the structure and prediction the structure and function of PcQM protein.[Results]The results showed that PcQM protein had many restriction enzyme sites.There was no signal peptide on N-terminal and no transmembrane structure.It was located in the cytoplasm.There were 26.05% α-helical(H),20.93% β-pleated sheet(E) and 53.02% random coil(L) predicted by Predict Protein.The tertiary structure was predicted by Swiss-Model.[Conclusion]The study has analyzed the sequence of PcQM protein and predicted the structure of it,which would lay a foundation for further learning the relationship between structure and function of the protein.江苏省高校自然科学研究面上项目(No.12KJD240001)资助~

含气、含水率监测仪的动态标定装置

含气、含水率监测仪的动态标定装置，该装置由管径相差１－１．５倍的两循环管道Ⅰ、Ⅱ组成，两循环管道Ⅰ、Ⅱ均呈环状封闭形，在两循环管道Ⅰ、Ⅱ的同侧竖直管道Ⅰ、Ⅱ管道上连有调节管和热交换管；在其另一同侧竖直管道Ⅰ、Ⅱ上装有调节管和被测监测仪的安装替换管；两循环管道Ⅰ、Ⅱ均与上油箱和加液口相连，还均装有管道泵；该装置可真实动态模拟油气水混合液，并可精确配制混合液的含水、含气率、标定含水率范围，还可随着调节模拟混合液的温度、压力和流速

青藏高原高山区和泛北极地区种子植物多倍体比较

多倍化是植物快速适应极端环境胁迫的一种重要机制。青藏高原高山区和泛北极地区具有相似的极端低温环境,且两地的植物曾有密切的交流和联系。然而,多倍体物种对两地植物区系生物多样性的贡献是否相同仍不清楚。我们系统地收集两地已有染色体数目和倍性报道的种子植物物种名录,共计1,770种,其中青藏高原高山区774种,泛北极地区996种;同时也相应地收集了每个物种的生活型信息。分析显示青藏高原高山区多倍体植物的比例为20.9%,泛北极地区多倍体植物比例为61.5%;青藏高原高山区一年生草本、多年生草本和木本植物中多倍体的比例分别为20.7%、21.6%和12.8%,泛北极地区一年生草本、多年生草本和木本植物中多倍体的比例分别为60.2%、65.5%和38.3%。这些结果表明泛北极地区比青藏高原高山区具有较高比例的多倍体物种。青藏高原高山植物区系在渐新世-中新世之交开始兴起,此时高原已达到一定高度,而后的高寒环境相对稳定,致使多倍体物种相对较少;而泛北极地区植物区系在3–4 Ma兴起,此后经历了冰期-间冰期、海平面波动等反复剧烈的气候环境变化,可能促进了大量的多倍化事件发生。本研究通过比较青藏高原高山区和泛北极地区植物多倍体物种的比例,揭示了两地多倍体比例差异的可能原因,将提高对多倍体适应极端环境的理解

SNP density of hemocyanin HtH1 intron 16 in Haliotis diversicolor

单核苷酸多态性(SnPS)是继rflP和SSr多态性标记之后的新一代遗传标记系统.本文采用EPIC的方法,分析了45个杂色鲍样品的血蓝蛋白HTH1基因第16内含子(H1 InTrOn 16)的SnP数据.这45个个体分别来自日本、台湾和汕头3个不同海域的野生或养殖群体.日本群体的血蓝蛋白HTH1基因第16内含子呈现出长度多态性,共有3种不同长度,分别是1 900、780、440 bP,测序结果表明3个等位基因可以互相比对;而台湾和汕头杂色鲍养殖群体的均为1 900 bP.初步研究结果表明日本杂色鲍个体大约96 bP长的片段含有1个自身杂合SnP位点;台湾杂色鲍个体约133 bP含有1个自身杂合SnP位点;汕头杂色鲍个体约153 bP含有1个自身杂合SnP位点.13个台湾杂色鲍个体包含的SnP密度为约31 bP含有1个SnP;23个汕头杂色鲍个体包含的SnP密度为约21 bP含有1个SnP.这些数据表明现有的杂色鲍养殖群体包含了丰富的SnP位点,利用SnP分子标记进行高密度遗传图谱的构建是可行的.Single nucleotide polymorphisms(SNP) are a new generation of genetic marker systems.EPIC was used to analyze the SNP of the hemocyanin HtH1 gene 16 intron(H1 intron 16) from 45 samples of Haliotis diversicolor.These 45 individuals came from three different wild or breeding populations in Japan,Taiwan and the Shantou Sea.There were three alleles in H1 intron 16 of the Japanese abalone(Haliotis diversicolor),which showed length polymorphism.The lengths of the three alleles were 1 900 bp,780 bp and 440 bp.However,the H1 intron 16 of the breeding populations of Taiwan and Shantou abalone were only 1 900 bp.Sequence analysis indicated that there was a self-heterozygous SNP locus of approximately 96 bp in the Japanese abalone,but that the Taiwan and Shantou abalone contained loci of 133 bp and 153 bp,respectively.The SNP density of 13 Taiwan abalone was 31 bp,while the SNP density of 23 Shantou abalone was 21 bp.These data indicated that the existing cultured population of abalone contained rich SNP loci,and it was feasible to construct a high density genetic map using SNP markers.国家自然科学基金资助项目(40976093;40706045

枯水期环太湖河流溶解态重金属空间分布

文章以环太湖53条出入湖河流为研究对象,测定2009年12月至2010年3月间（枯水季节）溶解态重金属含量,结果表明Mn、Ni、Cu、Zn、Cr、As等六种重金属溶解态浓度含量均较低,且未超标。将53条河流出入湖区域分为无锡常州区、宜兴区、湖州区、苏州区四个区域,无锡常州区除Cd外,其它重金属含量最高;Cd在宜兴区含量最高,湖州区含量次之,且超标现象严重;苏州区河流由于大部分时间出湖,故各重金属含量最低,水质最好