Study On The Development And Innovation Of Chinese Televised News In The New Period

本文从新时期中国电视新闻的发展与创新视角对电视新闻节目形态、功能、传播途径以及影响因素进行深入探讨。以20世纪90年代以来的电视新闻为研究对象，以质性研究为主，综合运用文献分析、文本分析等研究方法，从新闻学、传播学以及媒介生态学等理论出发，对电视新闻的发展、创新路径与动因进行研究。 本文共有五章，主要内容如下： 第一章绪论部分包括研究背景、研究意义、文献综述，并确定本文的研究方法。 第二章包括两个主要部分，一是对本文涉及到的主要概念进行界定，包括电视新闻栏目与节目，电视新闻节目形态和网络电视新闻的概念。二是对与本研究相关的理论进行梳理，包括关于大众传播功能的理论和媒介生态学的相关理论，为...This paper thoroughly discusses the forms, features, routes of transmission, as well as influencing factors of the televised news programs from the view of the development and innovation of Chinese televised news during the new period. Making televised news since the 1990s as the object of study, this article basely uses the method of qualitative research, and makes comprehensive use of research m...学位：文学硕士院系专业：新闻传播学院新闻学系_新闻学学号：1052009115264

Research on The Long-distance Trafficking of FT mRNA Through The Endoplasmic Reticulum System in Arabidopsis

拟南芥开花调控分为四条途径：光周期途径、春化途径、赤霉素途径和自主途径，其中FLOWERLOCUST（FT）是光周期途径中重要的调控基因，也是四条开花调控途径关键的整合因子，其表达产物具有长距离运输的功能。实验室已有研究证明FT蛋白和FTmRNA共同参与了长距离运输，本研究主要针对FT蛋白与FTmRNA的转运模式展开研究，得到了以下结果：（1）通过将FT蛋白与不同定位信号肽的融合将FT蛋白分别定位到内质网、线粒体和叶绿体中，发现内质网中的FT蛋白参与协同FTmRNA的长距离运输。（2）证明了FT蛋白与FTmRNA的转运不通过高尔基体。该研究利用超表达Sec12p和蛋白转运抑制剂BFA/Mone...There are four signaling pathways that regulate the flowering time in Arabidopsis: photoperiod pathway, vernalization pathway, gibberllin pathway and autonmous pathway. FLOWER LOCUS T（FT）is an important regulatory gene in photoperiod pathway, which also plays a critical role in floral integrated networks. It has been proved in our lab that both FT protein and FT mRNA take part in the long-distance...学位：理学硕士院系专业：生命科学学院生物学系_发育生物学学号：2172008115256

台湾电视政论节目——形式化的民主

台湾号称有极大的言论自由,带有call-in环节的台湾电视政论节目似乎成了其民主的标榜,但是透过表象,分析其节目的主持人、议题、来宾以及call-in观众就可以看出,政论节目不仅受政治势力的影响,而且深受商业利益之收视率的制约,使之成了两党竞争、表演作秀的舞台。刻意制造冲突对立的台湾政论节目已与民主的道路越来越远,其所代表的民主涵义已经沦为一种表象,一种形式。国家社科课题《一国两制新闻学研究》的阶段性成果

COMPARATIVE STUDIES ON THE TOTAL PIGMENT AND PIGMENT COMPONENTS OF GOLDFISH

用色谱和光谱两种方法对金鱼总色素和色素组分进行了研究。研究结果表明,红鲫、草金鱼和红龙睛等红色金鱼总色素光谱在可见光区(472nm附近)有一个吸收峰,黑鲫和黑龙睛等黑色金鱼在可见光区(450nm和472nm附近)有两个吸收峰出现,且红色金鱼所含色素组分以红色(虾青素)为主,黑色金鱼所含色素组分以杏黄色和橙色为主,其他色素组分为辅。金鱼黑色色斑形成是由于黑色素存在时,其他各色素组分的颜色被掩盖的结果;金鱼其他各种色斑的形成则是由于其体内各色素组分以不同比例相互搭配组合的结果。亲缘关系越近的金鱼其总色素组成就越相似,红鲫和黑鲫均含有四种近乎相同的色素组分,红龙睛和黑龙睛均含有六种近乎相同的色素组分,草金鱼虽也含有四种与红鲫和黑鲫相近的色素组分,但Rf值略有差异。据此推测,红鲫和黑鲫、红龙睛和黑龙睛可能分别具有较近的亲缘关系,而草金鱼则可能是介于黑鲫和龙睛鱼之间,且与黑鲫具有较近的亲缘关系。该研究有望为金鱼增色饵料的研制与开发提供理论依据,使金鱼的观赏价值和经济价值得到进一步提高。The study was conducted to investigate the total pigment components of different breeds of goldfish by spectrophotometer and thin-layer chromatography.The results showed the spectrum of total pigment of Red color crucian.Grass goldfish and Red Dragon-eye had one absorption peaks in visible region(472nm). The spectrum of total pigment of Black carp and Black Dragon-eye had two similar absorption peaks in visible region(450nm and 472nm).The pigment components of different breeds of Red color goldfish were mainly Red pigment(astaxanthin). The pigment components of different breeds of Black color goldfish were mainly apricot or orange pigment.The black spots of goldfish may be formed when melanin covered other pigment,other color spots may be formed when the pigment component of all kinds were mixed in proper proportions.The more the relation of color spots is close,the more the total pigment component is similar.Red color crucian and Black carp had same pigment components of four kinds,Red Dragon-eye and Black Dragon-eye had the same pigment components of six kinds,although there are four pigment components,which are close to the ones in Red color crucian and Black carp in the body of Grass goldfish,but Grass goldfish's RF has slight difference with Red color crucian and Black carp.As above,Red color crucian and Black carp,Red Dragon-eye and Black Dragon-eye probably are close relatives,respectively,and the category of Grass goldfish may possibly fall between Black carp and Dragon-eye,which has a closer relative with Black carp.This study will give help to the research and development of goldfish color-adding diet and further enhancement of goldfish ornamental value and market value

COMPARATIVE STUDIES ON THE TOTAL PIGMENT AND PIGMENT COMPONENTS OF COLOR CARP

用光谱和色谱两种方法对锦鲤的总色素和色素组分进行了研究。研究结果表明,红色锦鲤、乌鲤和绯写锦鲤总色素光谱在可见光区(448nm和470nm)有两个完全相同的吸收峰,黄写锦鲤和昭和三色锦鲤总色素光谱在可见光区(445nm和472nm附近)有两个相近的吸收峰,锦鲤所含色素组分均以杏黄色或橙色为主,其他色素组分为辅。锦鲤黑色色斑是由于黑色素存在时,其他各色素组分的颜色被黑色所掩盖;锦鲤其他色斑的形成则是由于其体内各色素组分以不同比例相互搭配组合的结果。亲缘关系越近的锦鲤其总色素组分就越相似,红色锦鲤和乌鲤均含有六种相同的色素组分,绯写锦鲤除杏黄色和橙色色素组分与前二者的同色色素组分Rf值不同外,其余四种同色色素组分的Rf值均相近;黄写锦鲤与昭和三色锦鲤分别含有三种和四种色素组分且Rf值差异显著。据此推测,红色锦鲤、乌鲤和绯写锦鲤可能具有较近的亲缘关系,而黄写锦鲤、昭和三色锦鲤与前三者之间可能具有较远的亲缘关系。该研究有望为锦鲤增色饵料的研制与开发提供理论依据,使锦鲤的观赏价值和经济价值得到进一步提高。The study was conducted to investigate the total pigment and pigment components of different breeds of color carp by spectrophotometer and thin-layer chromatography.The results showed that spectrum of total pigment of Red Color Carp and Black color Carp and Black Spot-Red color Carp had two same absorption peaks in visible lregion(470nm and 448nm).The spectrum of total pigment of Black Spot-Yellow color Carp and Black-Blue-Red Spot-color Carp had two similar absorption peaks in visible region(445nm and 472nm).The pigment components of different breeds of brocaded carp were mainly apricot or orange pigment.The black spots of color carp may be formed when melanin covered other pigment,other color spots may be formed when the pigment components of all kinds were mixed in proper proportions.The more the relation of color carp is close,the more the total pigment component is similar.Red color Carp and Black color Carp had same pigment components of six kinds,there were similar Rf values of four same color pigment components for Black Spot-Red color Carp as compared with both of the former and there were different Rf values of two same color pigment components for the latter in comparison with both of the former.Black Spot-Yellow color Carp and Black-Blue-Red Spot-color Carp had three and four pigment components respectively,and the difference of their Rf values was notable.As above,Red color Carp and Black color Carp and Black Spot-Red color Carp probably are close relatives,and the former and Black Spot-Yellow color Carp of Black-Blue-Red Spot-color Carp probably are distant relatives.This study will help the research and development of color carp color-adding diet and further enhancement of brocaded carp ornamental value and market value.广东省科技计划项目(2002C20304);; 广州市科技攻关重点项目(2002Z2-E0102)资

Stability of Total Pigment in Grass Goldfish (II)——Effects of pH, Vitamins and Organic Compounds

草金鱼总色素光谱吸收峰在400～600nm,系类胡萝卜素色素。在不同酸碱度、维生素和有机物作用下,该观赏鱼总色素稳定性各不相同。环境pH值过高或过低对该色素具有强烈的破坏作用,中性pH值溶液利于该色素的有效保存;Vc和VE对该色素具有保护作用,但是当Vc剂量不适时,该色素遭到严重破坏,VK对该色素具较强的破坏作用;乳酸对该色素具有增色作用,苯甲酸、草酸、柠檬酸,丙二酸和反丁烯二酸对该色素具有保护作用,乌头酸、水杨酸、顺丁烯二酸、亚油酸、萘乙酸、溴丙酸和苹果酸对该色素具有破坏作用,其中以苹果酸的破坏作用最强。淀粉对该色素具有保护作用,葡萄糖和蔗糖则具有破坏作用,其中以蔗糖的破坏作用最强。研究结果提示:在提取、保存该色素以及配制增色饵料时,要特别注意避免不良因素的影响,确保试验结论的正确和增色效果的良好。Carotenoid, as the total pigment in grass goldfish (Carassius aurutus), had spectral absorption peaks at 400～600 nm and varied with pH, vitamins and organic compounds in stability. The carotenoid was destroyed at high or low pH and dosage of vitamin C, while it can be well conserved in neutral condition and in vitamin C and E. Lactic acid, benzoic acid, oxalic acid, citric acid, malonic acid, amylum, and fumaric acid had the effect of protection of the pigment while aconite acid, salicylic acid, maleic acid, linoleic acid, glucose, sucrose, naphthylacetic acid, bromopropanoic acid and malic acid destroied the pigment

Stability of Total Pigment in Grass Goldfish (I)--Effects of sunlight, atmosphere, temperature and metal ions

草金鱼总色素光谱吸收峰为400～600nm,是类胡萝卜素色素。在日光、高温和某些金属离子作用下,破坏程度严重;在避光、低温和相关离子作用条件下,色素受到保护或具有增色作用。研究结果提示:在提取、保存该色素以及配制增色饵料时,要特别注意避免有关不良因素的影响,确保试验结论的正确和增色效果的良好。The carotenoid in grass goldfish (Carassius auratus) was seriously destroyed when exposed to sunlight, high temperature and some metal irons. In unexposed light, low temperature and the function of related irons, the pigment was protected or had fortification influences

基于emms介尺度模型的双分散鼓泡流化床的模拟

双分散气固鼓泡流化床中颗粒通常具有不同粒径或密度,导致产生颗粒偏析等现象,影响传递和反应行为。颗粒分离和混合与气泡运动密不可分,其中相间曳力起关键作用。最近Ahmad等提出了一种基于气泡结构的双分散介尺度曳力模型,能成功预测双分散鼓泡流化床的床层膨胀系数。本研究耦合该曳力模型与连续介质方法,模拟了两种不同的双分散鼓泡流化床,通过分析不同流化状态下的气泡运动、颗粒浓度比的轴向分布等参数,进一步检验模型的适用性。研究表明,当双分散颗粒处于完全流化状态时,耦合双分散介尺度曳力模型可合理预测不同颗粒的分离现象;而其处于过渡流化状态时,新曳力模型和传统模型均无法获得合理结果,此时调节固固曳力可改进模拟结果

基于emms介尺度模型的双分散鼓泡流化床的模拟

双分散气固鼓泡流化床中颗粒通常具有不同粒径或密度,导致产生颗粒偏析等现象,影响传递和反应行为。颗粒分离和混合与气泡运动密不可分,其中相间曳力起关键作用。最近Ahmad等提出了一种基于气泡结构的双分散介尺度曳力模型,能成功预测双分散鼓泡流化床的床层膨胀系数。本研究耦合该曳力模型与连续介质方法,模拟了两种不同的双分散鼓泡流化床,通过分析不同流化状态下的气泡运动、颗粒浓度比的轴向分布等参数,进一步检验模型的适用性。研究表明,当双分散颗粒处于完全流化状态时,耦合双分散介尺度曳力模型可合理预测不同颗粒的分离现象;而其处于过渡流化状态时,新曳力模型和传统模型均无法获得合理结果,此时调节固固曳力可改进模拟结果

基于EMMS介尺度模型的双分散鼓泡流化床的模拟

双分散气固鼓泡流化床中颗粒通常具有不同粒径或密度,导致产生颗粒偏析等现象,影响传递和反应行为。颗粒分离和混合与气泡运动密不可分,其中相间曳力起关键作用。最近Ahmad等提出了一种基于气泡结构的双分散介尺度曳力模型,能成功预测双分散鼓泡流化床的床层膨胀系数。本研究耦合该曳力模型与连续介质方法,模拟了两种不同的双分散鼓泡流化床,通过分析不同流化状态下的气泡运动、颗粒浓度比的轴向分布等参数,进一步检验模型的适用性。研究表明,当双分散颗粒处于完全流化状态时,耦合双分散介尺度曳力模型可合理预测不同颗粒的分离现象;而其处于过渡流化状态时,新曳力模型和传统模型均无法获得合理结果,此时调节固固曳力可改进模拟结果