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Search Results: 1 - 10 of 58403 matches for " 方凤才 "
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一种间谐波检测方法的研究
An Analytical Method of Inter-Harmonic Detection
 [PDF]

, , 何益宏
Computer Science and Application (CSA) , 2015, DOI: 10.12677/CSA.2015.55020
Abstract:
在小波变换对间谐波检测的基础上,特定函数对采样信号调制后,改变信号的频率结构,利用基于MATLLAT算法的小波多分辨分析在低频段具有高频率分辨率特点,分离出信号调制后信号的直流分量用于计算间谐波分量。经过MATLAB仿真验证,该方法能够准确检测谐波和间谐波分量。
A method of inter-harmonic detection is presented based on wavelet transform after the sampled signal modulated by specific function and the structure of the signal frequency have been changed. The methods based on MALLAT algorithm of wavelet multiresolution have a high frequency reso-lution in the low-frequency band. Then, the inter-harmonics component is calculated by the DC component which is separated out from modulated signal by the methods. The simulation results show that the method can accurately detect harmonics and inter-harmonics.
人巨细胞病毒pp150抗原区基因片段的克隆与表达
李国 , 季明春 ,, 严华 , 申厚
扬州大学学报(农业与生命科学版) , 2003,
Abstract: ????为了研制人巨细胞病毒(HCMV)核酸疫苗,根据HCMV基质磷蛋白pp150基因序列设计引物,利用高保真PCR从HCMVAD169株基因组DNA中扩增出编码pp150抗原决定簇区域的基因片段。序列分析结果显示其与发表的该段序列同源性为100%。将此基因片段克隆进原核表达质粒pET30a,重组质粒转化大肠杆菌BL21(DE3),诱导表达后经SDS-PAGE及Westernblotting检测到约35ku的外源蛋白。表达产物免疫小鼠,所得抗体具有低滴度中和作用。
亚甲基四氢叶酸还原酶基因C677T位点多态性与晚期胃癌化学疗法敏感性关系的Meta分析
薛金,王千千,王涛,王玉,,关泉林
华西医学 , 2014, DOI: 10.7507/1002-0179.20140670
Abstract: 目的 评价亚甲基四氢叶酸还原酶(MTHFR)基因C677T位点多态性与晚期胃癌对氟尿嘧啶为基础的化学疗法(化疗)疗效的关系。方法 计算机检索中国期刊全文数据库、中文科技期刊数据库、万方数据库、中国生物医学文献数据库、PubMed、EMbase、Cochrane图书馆及WebofScience数据库,检索时间为从建库至2013年5月28日),纳入有关晚期胃癌患者MTHFRC677T基因多态性与氟尿嘧啶类药物化疗敏感性的病例对照研究,并采用RevMan5.1软件进行统计分析。结果 共纳入7个病例对照研究,共计775例。Meta分析结果显示MTHFRC677T各基因型中,TT对比CC,OR=4.63,95%CI(1.23,17.40),P=0.02;CC+CT对比TT,OR=0.21,95%CI(0.06,0.78),P=0.02。亚组分析亚洲人群组TT对比CC,OR=32.99,95%CI(11.40,95.42),P<0.00001;CC+CT对比TT,OR=0.04,95%CI(0.02,0.10),P<0.00001。根据检测方法不同进行敏感性分析的结果显示,TT对比CC,OR=6.03,95%CI(1.53,23.72),P=0.01;CC+CT对比TT,OR=0.17,95%CI(0.04,0.68),P=0.01。结论 MTHFRC677T基因多态性可能与胃癌患者接受氟尿嘧啶为基础的化疗敏感性相关。
水稻三化螟对杀虫剂的耐药性研究
沈国清 , 周福 , 继朝 , 李沛元 , 李祥 , 杨代 , 张青
扬州大学学报(农业与生命科学版) , 1999,
Abstract: ????研究了江苏省3个地区水稻三化螟对有机磷、沙蚕毒素杀虫剂的耐药性。结果表明:不同地区的水稻三化螟对甲胺磷、杀虫双的耐药力有明显差异,其中高淳种群对甲胺磷、杀虫双具有很强的耐药力。以广东翁源种群为相对敏感种群,高淳、邗江、如皋种群对杀虫双的抗性倍数分别为12.4、4.4和5.1倍。如皋、高淳和邗江种群对杀虫单的敏感性差异不大。
三种不同酵母对啤酒发酵及风味的影响
黄达明,维明,钱静亚,肖香,,张志
食品科学 , 2007,
Abstract: ?本实验采用y1110、安琪、模式三种不同的啤酒酵母,在同种工艺条件下测定发酵过程中α-氨基氮(α-an)、ph、双乙酰、高级醇等指标,并比较三种不同啤酒的风味物质含量。结果表明:y1110增殖最快,α-an和ph值下降最快,双乙酰还原较快,后酵结束双乙酰含量最低,啤酒样品含醇量较高,适于醇厚型啤酒酿造;安琪酵母增殖最慢,α-an和ph值下降最慢,啤酒样品含酯量较高,适于淡爽型啤酒酿造;模式酵母酯类与醇类含量都很高,不适于实际生产。
大倾角煤层区段煤柱合理留设宽度研究

煤炭工程 , 2012,
Abstract: 在现有煤柱宽度理论计算公式的基础上,针对大倾角煤层围岩应力特点,综合考虑煤层倾角、顶板垮落对采空区充填以及在采动时对煤体引起的损伤等多方面影响,推导出大倾角煤层区段煤柱合理留设宽度理论计算公式,并应用于胜利煤矿,取得了良好的技术与经济效果,该研究对确定大倾角煤层区段煤柱合理留设宽度具有参考作用。
从MEGA1到MEGA2:历史与逻辑

复旦学报(社会科学版) , 2015,
Abstract: 《马克思恩格斯全集(历史考证版)》(MEGA)的编辑出版是20世纪上半叶延续至今的一项浩瀚工程。文章回顾了《马克思恩格斯全集(历史考证版第1版)》的贡献与问题,指出了《马克思恩格斯全集(历史考证版第2版)》与第1版在编辑出版原则上的不同,在“去政治化、国际化与学术化”指导思想下,更强调的是文本的完整性、对原文的忠实性,更强调对文本发展过程的展现,以及更详细的注释。同时,文章介绍了第2版的组成部分,目前的出版状况、在编状况、待编状况,并对已出版的著作进行了介绍与评价,并以图表方式清楚呈现了第2版的总体进展状况。可以说,《马克思恩格斯全集(历史考证版)》的编辑出版历史是一部非常艰难而又令人赞叹的历史,经过了“凤凰涅槃”的重生,但仍任重道远,迄今尚处于通往马克思的途中。
作为社会分析的正义论——霍耐特对《法哲学原理》的诠释与重构

- , 2016,
Abstract: 在霍耐特“从承认理论到民主伦理构想”发展过程中,对黑格尔《法哲学原理》的诠释与重构是非常重要的一环。当然,作为一个原创性哲学家,霍耐特并不满足于对《法哲学原理》的学究式解读,而是借助于对《法哲学原理》的独特诠释来重构作为民主伦理基础的社会自由和多元正义构想的可能性。如果说,在《不确定性的痛苦》中,霍耐特试图将黑格尔法哲学诠释与重构为“规范的社会正义论”,目的是为以一元道德为基础的多元正义构想奠基;那么,在《自由的权利》中,他则试图将黑格尔法哲学诠释与重构为“作为分析的社会正义论”,目的是用黑格尔的“伦理”改造康德的“道德”,从而实现道德主义与伦理主义的融合、规范性研究与经验性研究的结合。在此过程中,文章也分别考察了几种自由的类型,即消极自由、反思的自由和社会自由,在批判性地分析消极自由和反思自由的抽象性和片面性之后,着重论述了黑格尔的社会自由的现实性,以及霍耐特基于这种现实自由所做的现代重构,并指出这种重构乃是霍耐特的作为社会分析的社会正义理论的逻辑起点。
Abstract:In the process of Honneth's “transformation from the theory of recognition to the conception of democratic ethics,” his interpretation and reconstruction on Hegel's Philosophy of Right were extremely important parts. Honneth, as a creative philosopher, was certainly dissatisfied with those scholastic explanations on Philosophy of Right. So he attempted to reconstruct the conception of social liberty which was the foundation of democratic ethics by his unique interpretation on Philosophy of Right. Henneth tried to define and reconstruct Hegel's philosophy of right as “normative theory of social justice” in Suffering from Indeterminacy in order to establish the foundation for multi-dimensional justice based on one-dimensional moral. While in Freedom's Right, he attempted to define and reconstruct Hegel's philosophy of right as “a theory of justice as social analysis” in order to combine moralism and ethicism, normative research and empirical research through reconstructing Kant's “moral” by Hegel's “ethics”.
电化学共沉淀分离测定痕量重金属离子的研究进展
Progress on the Electrochemical Co-Precipitation Determination for Trace Amounts of Heavy Metal Ions
 [PDF]

刘敏, 王广,
Advances in Analytical Chemistry (AAC) , 2011, DOI: 10.12677/aac.2011.12002
Abstract: 本文简述了近年来测定重金属离子的电分析方法,着重介绍了电化学共沉淀分离测定痕量重金属离子的研究进展。该方法集分离、富集和测定于一体的优势,有着良好的选择性、灵敏度和稳定性。引用文献36篇。
Description on the electrochemical determination of heavy metal ions in recent years was pre-sented in this paper. Research of electrochemical co-precipitation detection of trace amounts of heavy metal ions was high lightly introduced. The method was that separation, enrichment and electrochemical detection of trace heavy metal ions were simultaneously and synchronously carried through and it shows high selecti- vity, sensitivity and stability. And thirty-six literatures were cited.
湖北省现代服务业发展的现状及对策研究
Study on Status and Countermeasures of the Modern Service Industry in Hubei Province
 [PDF]

进玄,
Journal of Low Carbon Economy (JLCE) , 2013, DOI: 10.12677/JLCE.2013.24021
Abstract:
随着科学技术的发展以及产业结构的升级换代,现代服务业对区域经济发展的促进作用越来越明显,现代服务业发展水平的高低也日渐成为区域经济发达与否的衡量标准之一。本文以湖北省现代服务业的发展为例,以湖北省2010~2012年统计年鉴的数据为参照,在介绍现代服务业发展现状的基础上,结合湖北省自身经济发展的特点,针对存在的问题提出相应的对策方针,以期对湖北省现代服务业的发展起到一定的促进作用。
With the development of science and technology and the upgrading of industrial structure, it has been more and more obvious that the modern service industry can promote the development of the regional economy. The developmental level of the modern service industry has also been one criterion to measure whether the regional economy is developed or not. This paper is based on the modern service industry in Hubeiprovince, referring to the statistical yearbook ofHubeiprovince during 2010-2012. On the basis of the introduction of the current situation of the modern service industry, we combine with the characteristics of the economic development in Hubei province, and come up with the corresponding measures for the existing problems in order to promote the development of modern service industry in Hubei province.
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