“大流亡”中—“亭”——昆剧《牡丹亭》在海外上演的文化框架

《牡丹亭》在美国东西岸两地上演,显示了西方对中国高雅文化的全新接受,具有深刻的意义。     

Changes in Sugar Metabolism and Fruit Quality of Different Pear Cultivars During Cold Storage

Transactions of Tianjin University - This study evaluated the changes in sugar metabolism and fruit quality of different pear cultivars during cold storage using seven major commercial pear...     

Investigating Interaction Between Biochanin A and Human Serum Albumin by Multi-spectroscopic and Molecular Simulation Methods

Biochanin A(BCA), the most abundant isoflavone in chickpeas, presents a wide range of biological activities, such as hypolipidaemic, anti-oxidative, antiproliferative, and estrogen-like effects. We investigated the interaction between BCA and human serum albumin(HSA) via several techniques. UV–Vis absorption spectroscopy verified the conformational variation of HSA after BCA addition, and fluorescence spectroscopy revealed the relevant binding parameters. Circular dichroism spectroscopy was used to estimate the secondary structural changes of HSA with and without BCA. Molecular docking and dynamics simulations were then applied to study the characteristics of HSA with BCA. Energy decomposition analysis was used to prove that Trp214 in subdomain ⅡA of HSA is the most likely binding site of BCA. Van der Waals forces and hydrophobic interactions may play important roles during the binding process. All of our results showed that BCA presents significant binding affinity to HSA, thus confirming that the role of HSA has as an efficient transporter of biomolecules.     

研究生主题研讨课教学探究

研究生教学提倡培养学生的自主学习能力和创新能力。主题研讨式教学模式由单向传输知识为主向双向交流为主转变,引导、启发学生主动发现问题、解决问题。结合教学实践,从主题研讨课的授课内容、课堂组织、教学手段等多方面进行探讨,以提高研究生的课堂教学质量。     

Untraceable partially blind signature based on DLOG problem

This paper proposes a new untraceable Partially Blind Signature scheme which is a cross between the traditional signature scheme and the blind signature scheme. In this proposed scheme, the message M that the signer signed can be divided into two parts. The first part can be known to the signer (like that in the traditional signature scheme) while the other part cannot be known to the signer (like that in the blind signature scheme). After having signed M, the signer cannot determine if he has made the signature of M except through the part that he knows. We draw ideas from Brands' "Restricted Blind Signature" to solve the Untraceable Partially Blind Signature problem. Our scheme is a probabilistic signature scheme and the security of our Untraceable Partially Blind Signature scheme relies on the difficulty of computing discrete logarithm.     

Gene Expression and Activity of Enzymes Involved in Sugar Metabolism and Accumulation During “Huangguan” and “Yali” Pear Fruit Development

Since the carbohydrate content affects pear flavor during the process of growth, it is necessary to determine the sugar components that accumulate in the fruit. We analyzed the fruit carbohydrate content, and the gene expression and activity ofacid invertase(AI), neutral invertase(NI), sucrose synthase(SS), and sucrose phosphate synthase(SPS) during the development of "Huangguan" and "Yali" pears. The results demonstrate that during development, the fruit sugar metabolism of the "Huangguan" pear follows a typical sorbitol–starch-soluble sugars middle model, whereas the "Yali" pear fruit follows a typical sorbitol–sucrose–starch-soluble sugars middle model. In the "Huangguan" pear, we found the AI and NI gene expressions, as well as AI( P 0.05) and NI( P 0.01) enzyme activities, to be positively correlated, whereas we found the NI gene expression and NI enzyme activity of "Yali" pear to be negatively correlated( P 0.01). We observed the high levels oflate-stage AI and early-stage SS during development to roughly correspond with the gene expression found in the late and early stages, respectively, suggesting their potential regulatory roles in "Huangguan" pear fruit development. Our results indicate that the primary function of SPS during the early developmental stage is to accumulate sucrose, whereas the primary function of AI is to promote hexose accumulation during the late developmental stage ofmature "Yali" pear fruit.     

加强理科师范类无机化学实验的教学

随着高校课程改革的进行，在理科师范类无机化学实验教学中，笔就师范类的专业特点采取了一系列措施来提高实验教学质量，训练学生的实验能力，进而培养学生发现问题和解决问题的能力。事实证明，这一系列方法是行之有效的。     

北宋奏议留中考论

奏议留中即"皇帝"将大臣所上的奏议留中不发.北宋时期,留中的奏议可分规定之内章奏处理方式的奏议留中、皇帝对奏议的随时留中以及大臣乞求留中这三种情况.大臣对皇帝将奏议随时留中则持不同态度,有的大臣对此愤懑,有的则表示赞同并且主动乞求将奏章留中.奏议的留中会使得朝政不明,造成大臣之间互相攻击,甚至伪造奏章诬陷忠良等弊端,但是奏议留中也可以作为君臣政见不一时的缓冲带,更是保全敢于直言的大臣的一种措施.留中现象在北宋频繁出现的原因不外乎政治制度运转过程中人为因素的介入.     

加强游戏出版监管引导产业健康发展--中国游戏出版产业发展现状及政策

十多年前,个人电脑对于大多数中国家庭来说是过于昂贵的消费品,但随着经济的发展,国民收入水平提高,家庭电脑数量飞速增长,电脑正逐渐成为城市家庭的生活必需品,越来越多的年轻人也成为了电子游戏的玩家。而随着互联网的不断发展,人们开始尝试在互联网上使用电子游戏,突破了单机版电子游戏出版物仅限于单人玩的限制。追求多人同时在线,这就催生了网络游戏的兴起。     

新环境视角下我国广告产业传播形态探析

本文针对当下中国广告产业面临的断环境,着重从广告传播形态角度,提出"以产业融合为手段,以隐性的娱乐化传播作为主导传播形态,以传统广告传播形态作为有效补充"的多层级,生态型的广告产业传播形态.