以企业竞争优势为中心的3M经营成果测定法

在日益复杂化的市场竞争环境中,影响企业经营成果水平的因素越来越多。使用何种方法对企业经营成果进行测定才更为合理准确,一直是广大学者和企业战略家们探讨的热门话题。本文分析了传统企业成果测定方法的局限性,从战略角度出发,以企业竞争优势为中心,介绍了3M经营成果测定法;剖析了其与企业竞争优势之间的关系,并设定了3M经营成果测定模型。希望能够为以Concordance Process理论为代表的关于企业竞争优势的各种研究提供一种准确可行的成果测定方法,使今后的实证研究更加严谨科学。     

反相高效液相色谱法测定烟碱中间体制品的含量

本文建立了一种以pH=8.5醋酸-氨溶液作为缓冲溶液,梯度洗脱测定了高含量烟碱制品中烟碱含量的方法。该方法分离效果好、灵敏、准确,可用于烟碱制品的产品质量控制。     

用高度特异性王浆主蛋白1多克隆抗体ELISA法检测蜂王浆新鲜度(英文)

目的:为蜂王浆主蛋白1(MRJP1)的快速检测和鉴别提供科学依据,为蜂王浆的质量控制提供技术支持。创新点:首次比较了MRJP1特异性多克隆抗体与MRJP1重组表达蛋白多克隆抗体对王浆主蛋白家族的免疫反应差异,验证了蜂王浆中MRJP1蛋白降解与保温时间的相关性,建立了以MRJP1作为蜂王浆新鲜度生物标志物的快速检测方法。方法:通过蜂王浆主蛋白家族蛋白的氨基酸序列同源性分析,筛选出MRJP1的特异性多肽区域,进行人工合成,免疫兔子后取血清制备成特异性多克隆抗体。用蛋白质印迹法(Western blot)检测了MRJP1特异性多克隆抗体与MRJP1重组表达蛋白多克隆抗体对王浆主蛋白家族的免疫反应。以新鲜蜂王浆为对照品,用MRJP1特异性抗体酶联接免疫吸附剂测定(ELISA)法和变性电泳胶灰度扫描法分别测定保温(40°C)7~49天的蜂王浆中MRJP1含量的变化,并进行了相关性分析。结论:MRJP1的特异性抗体对MRJP1蛋白具有专一的免疫识别特性,可特异性地检测代表蜂王浆新鲜度的MRJP1含量变化,并鉴别蜂王浆的真伪。     

免疫放射分析法与浓缩接种法检测稻种带细菌性条斑病病菌的比较研究

浓缩接种法是传统的种子带菌检测方法,对水稻细菌性条斑病菌的可检测浓度为10~5个/ml左右,检测一批样品的速度为7～10d,但由于受到诸多环境因素和寄主的影响,该方法的稳定性和准确性较差。免疫放射分析法是一种新颖的超微量检测技术,由于它具有放射性同位素的灵敏性和血清学的特异性,用于细菌性条斑病菌的检测与前者相比具有许多优点,灵敏度高,可检测浓度为10~3个/ml;速度快,4h左右可得出结果;稳定性好,抗血清冻干品在4℃和-25℃下分别可保存70d和300d;可靠性强,与浓缩接种法的阴性符合率为100％,阳性符合率为63.04％。特别在低浓度下检测准确性更高。     

普通高校公共体育课多元化教学模式的研究与实践

采用了文献资料法、实验法、问卷调查法、数理统计法等方法,在杭兰平等人构建的“多元化体育教学模式”基础上,以贯彻“健康第一”和“终身体育”为主线加以提炼和优化,并在为期两年的教学实践中对促进课程多目标的实现效果,以及对大学生体育意识和行为的变化进行了对照分析。两年的实验研究表明：“多元化体育教学模式”与《指导纲要》体现的课程多目标的特点相适应,在对大学生体育意识和行为的培养有显著的促进作用。     

多元化教育理念对学校体育的影响与变迁

多元化教育理念的涌入,为学校体育的再认识提供了新的视角,为学校体育的再生长注入了改革的活力和支持,形成新的教育观。由此引发了学校体育的教育目标、课程与教学改革的不断调整和改革以适应这一挑战。     

Using chimeric piggyBac transposase to achieve directed interplasmid transposition in silkworm Bombyx mori and fruit fly Drosophila cells

The piggyBac transposon has been long used to integrate foreign DNA into insect genomes. However, undesirable transgene expression can result from random insertions into the genome. In this study, the efficiency of chimeric Gal4-piggyBac transposase in directing integration onto a DNA target plasmid was evaluated in cultured silkworm Bombyx mori Bm-12 and fruit fly Drosophila Schneider 2 (S2) cells. The Gal4-piggyBac transposase has a Gal4 DNA-binding domain (DBD), and the target plasmid has upstream activating sequences (UAS) to which the Gal4 DBD can bind with high affinity. The results indicate that, in the Bm-12 and S2 cells, transpositional activity of Gal4-piggyBac transposase was increased by 4.0 and 7.5 times, respectively, compared to controls, where Gal4-UAS interaction was absent. Moreover, the Gal4-piggyBac transposase had the ability of directing piggyBac element integration to certain sites of the target plasmid, although the target-directing specificity was not as high as expected. The chimeric piggyBac transposase has the potential for use in site-directed transgenesis and gene function research in B. mori.     

计算机网络技术与现代设计教育发展

目前传统模式下的工业设计教育存在僵化、教条的一面,致使设计教育构架赶不上时代的需要,而当今社会对工业设计人才的需求,不仅要求有较高的思想文化素质,又要善于运用高新技术知识解决实际问题,为此提出网络技术与设计教育的优势互补,拓宽设计专业基础教育,培养复合型的应用技术人才.     

Science Letters：Evaluation of a kinetic uricase method for serum uric acid assay by predicting background absorbance of uricase reaction solution with an integrated method

A patented kinetic uricase method was evaluated for serum uric acid assay. Initial absorbance of the reaction mixture before uricase action （A0） was obtained by correcting the absorbance at 293 nm measured before the addition of uricase solution, and background absorbance （Ab） was predicted by an integrated method. Uric acid concentration in reaction solution was calculated from AA, the difference between A0 and Ab, using the absorptivity preset for uric acid. This kinetic uricase method exhibited CV〈4.3% and recovery of 100%. Lipids, bilirubin, hemoglobin, ascorbic acid, reduced glutathione and xanthine 〈0.32 mmol/L in serum had no significant effects. △A linearly responded to 1.2 to 37.5 μmol/L uric acid in reaction solution containing 15 μl serum. The slope of linear response was consistent with the absorptivity preset for uric acid while the intercept was consistent with that for serum alone. Uric acid concentrations in clinic sera by different uricase methods positively correlated to each other. By Bland-Altman analysis, this kinetic uricase method accorded with that by quantifying the total change of UV absorbance on the completion of uricase reaction. These results demonstrated that this kinetic uricase method is reliable for serum uric acid assay with enhanced resistance to both xanthine and other common errors, wider range of linear response and much lower cost.     

观音竹蛋白激酶基因BmPti1启动子的克隆与序列分析

以观音竹（Bambusamultiplexvar．riviereorum）基因组DNA为模板,通过PCR扩增获得蛋白激酶基因BmPtil的启动子片段,长度为1466bp,通过HamCARE启动子预测工具分析表明：该序列中除含有TATA-box、CAAT-box等基本顺武作用元件外,还发现1个参与生理周期调控的元件、1个厌氧诱导的顺式元件,1个干旱诱导的MYB结合位点、1个光诱导MYB位点、1个水杨酸响应元件、1个赤霉素响应元件、1个低温响应元件、2个ABA与VPl响应元件和2个激素响应元件．表明BmPtil基因的表达可能受干旱、光照、氧气、低温等环境因子以及脱落酸、水杨酸、赤霉素等激素的调控．此外,推测BmPtil基因的表达可能与植株的生理周期相关．