Lecture 5

Many foreign friends first learn about Chinese culture through the numerous Chinese restaurants found all over the world, and soon discern that China is a country with delicious cuisine (菜肴).The second impression of Chinese culture is often Peking Opera, whose masks are now almost emblematic (标志性的) of China. Many countries design posters using Peking Opera masks to signal a “Year of Chinese Culture”. To understand Chinese culture, therefore, some knowledge about Peking Opera is indeed indispensable. Peking Opera contains the soul of Chinese national culture. Its unique charm inspires deep feeling in Chinese people.History:Peking Opera has been an integral part of Chinese culture for over 200 years. Originating from humble beginning in east China's Anhui and Hubei provinces, it was brought to Beijing by the Qing Emperor Qianlong who, during his periodic inspections of the southern regions, discovered and fell in love with the vibrancy and life in the performances he witnessed there. As an 80th birthday gift to himself, he ordered local troupes to perform for him and had the Anhui and Hubei groups incorporated into the palace opera. In this way Peking Opera was born.parison: Eastern and Western DramaThe actors of Ballet just dance; the actors of modern drama just speak; the actors of opera just sing songs; while only Peking Opera actors perform all four elements as “sing, speak, act and fight(the last two are also considered as dance) on the stage.芭蕾，只舞不说；话剧，只说不唱；歌剧，只唱不舞，京剧逢动必舞，有声必歌II. Main Features of Peking OperaIII. BEAUTY in Peking Opera3.1 The Delights of Peking Opera Masks3.2 Peking Opera Performance: Sing, Speak, Act, and FightIV. Mei Lanfang, Great Peking Opera ArtistV. How to appreciate Peking OperaI. Comparison: Eastern and Western DramaII. Main Features of Peking Opera1) Peking Opera is a comprehensive performing art that aesthetically combines music, singing, dialogue, pantomime, acrobatics and martial arts. Hence an actor or actress in Beijing Opera has to meet more requirements than that in other forms of performing art. All of these skills are expected to be performed effortlessly, in keeping with the spirit of the art form.2）Symbolism prevails in Peking Opera. The stage of Peking Opera knows no limit in space or time. The set can accommodate anything. For example, an actor can practice the scene of galloping the horse simply by using a horsewhip without riding a real horse on stage. A bridge is made up of two chairs standing on each side of a table. Storms are realized by performers dancing with umbrellas.These examples describe the function of the “virtual world” in the art of Peking Opera, which provides limitless room for the performances of actors; and in return, performers present the audience with a world of images full of appealing wit. Thefollowing pictures can help us understand the virtual world on the stage.3）A highly stylized art.Peking Opera follows other traditional Chinese arts in emphasizing meaning, rather than accuracy. The highest aim of performers is to inject beauty into every motion. The most common stylization method in Peking Opera is roundness. Every motion and pose is carefully manipulated to avoid sharp angles and straight lines. A character looking upon an object above them will sweep his eyes in a circular motion from low to high before landing on the object. Similarly, a character will sweep his hand in an arc from left to right in order to indicate an object on the right.The performers primarily use pantomime to express feelings and tell stories. Stylized footwork, gestures, and various kinds of body movements portray and symbolize actions such as opening a door, climbing a hill, going upstairs, or rowing a boat.The elaborate and gorgeous facial make-up and costumes are two distinguished characteristics of Beijing Opera. The audience can know what kind of character the role is from the colors and patterns.Generally speaking, red faces have the positive meaning symbolizing the brave, upright and wise men. Another positive color is purple. Black faces usually have neutral meaning, representative the just men and uprightness. Blue and green also have neutral meanings that symbolize the hero from the bushes. Meanwhile, the yellow and white represent the crafty men with negative meaning. Performers have gold or silver facial make-up standing for the monsters or Gods. Good-nature people are usually painted with relatively simple colors while make-up of hostile and doubtful characters, such as bandits, robbers, rebels and alike, bear complex marks 3.1 The Delights of Peking Opera MasksFace painting: Vivid face makeup fascinates foreigners watching Peking Opera. Actually this face painting is not done for the sake of beauty but rather it portrays different characters. Red stands for loyalty and bravery, black represents powerful and wise people, yellow and white depict fierce and cunning characters, blue and green indicate very virile Robin Hood type of outlaws, while gold and silver indicates mysterious or super-natural presences.•The Masks, applied to the two roles of the “jing” or “painted-face role” and the “chou” or “clown”, serve two pur poses.•One is to indicate identity and character of the role.•The other purpose is to express people’s appraisal of the roles from a moral and aesthetic point of view, such as respectable, hateful, noble, or ridiculous, etc.3.2 Peking Opera Performance: Sing, Speak, Act, and Fight。

Lecture 5讲授题目：Word Formation Ⅰ❖所属章节：《现代英语词汇学概论》之第3章❖计划学时：4 periods❖教学方法：传统讲授法❖参考资料：《英语词汇学教程》、《英语词汇学》❖教学目的和要求：通过本单元的学习，学生对英语的构词法有初步了解，尤其是产出新词最多的三种主要构词法：词缀法、复合法、转类法。

❖教学重点：1) Affixation;2) Compounding;3) Conversion.❖教学难点：The above-mentioned word-formations.The expansion of vocabulary in modern English depends chiefly on word-formation. There is a variety of means being at work now. The most productive are affixation, compounding and conversion.According to Pyles and Algeo (1982), words produced through affixation constitute 30% to 40% of the total number of new words; compounding yields 28% to 30% of all the new words; conversion gives us 26% of the new vocabulary. The rest of new words come form shortening including clipping andacronymy, amounting to 8% to 10%, together with 1% to 5% of words born out of blending and other means.Talking about word-forming patterns means dealing with rules. But a rule of word-formation usually differs from a syntactic rule. Not all the words that are produced by applying the rule are acceptable. For example, the existence of the actual English words unclean, unwise, unfair does not ensure the acceptance of unsad, unexcellent.Therefore, rules themselves are not fixed but undergo changes to a certain extent. For example, the Old English –th which is found in warmth, length, depth, width, derived from adjectives warm, long, deep, wide,but broad is no longer used to form new word broadth (※coolth)---(Quirk, et al 1985).By word-formation processes, we concentrate on productive or marginally productive rules. While applying the rules, we should remember that there are always exceptions.(在构词过程中，我们要注意到活跃性和边缘性问题。

第五讲 载流子产生与复合（续）9月12，2001内容：1.热平衡之外的G&R率2.表面产生与复合阅读作业del Alamo Ch. 3，§§3.4 ,3.6主要问题●当载流子浓度被扰动而偏离热平衡时的值时，对产生和复合之间的平衡发生了什么影响？●对每个G&R机制是如何打乱的？●决定G&R率平衡的主要因素是什么？●如何能表征表面G&R？⒈ 平衡之外的G&R率●在热平衡时：●在热平衡之外（载流子浓度被扰动而偏离热平衡时的值）：如果,G R 载流子浓度随时间变化。

定义净复合率U 是十分有用的：U R G=−反映内部G&R 机制的平衡：如果0R G U >，净复合占优势如果0R G U <，净产生占优势如果几个机制同时作用，定义：i i iU R G =−而iU U =在热平衡之外的不同机制对G&R 率会发生什么影响？a ）能带到能带光学G&R●光产生率没有变化，因为键合数目没有变化：00rad rad rad G g r n p ==●如果电子和空穴浓度发生变化时，光复合率受到影响：rad rad R r np=●定义净复合率：()00rad rad rad rad U R G r np n p =−=− －如果00np n p >，0rad U >，净复合占优势－如果00np n p <，0rad U <，净产生占优势●注意：我们假定rad g 和rad r 与平衡时无变化b ） 俄歇G&R●包括热电子 ：eeh eeh G g n= 2eeh eeh R r n p=如果eeh g 和eeh r 间关系和TE 时无差别：()00eeh eeh eeh eeh U R G r n np n p =−=−●同样，包括热电子：()00ehh ehh U r p np n p =−●总的 俄歇 ：()()00Auger eeh ehh U r n r p np n p =+−c ） 与陷阱有关的热G&R在平衡之外，如果产生复合率常数不受影响：复合：捕获一个电子＋一个空穴净复合率＝净电子捕获率＝净空穴捕获率tr ec ee hc heU r r r r =−=−从这，推导出t n ，并最终得到tr U ：()()00tr ho i o inp n p U n n p n ττ−=+++d ） 所有过程组合起来□ 特殊情况：低水平掺杂定义过剩载流子浓度：'0n n n =+ '0p p p=+LLI ：平衡的少数载流子浓度占主导但对多数载流子浓度扰动可以忽略－对n 型：－对p型：在LLI中：U的所以表达式仿效下面形式：τ为过程i的载流子寿命，每个G&R过程的一个特征常数：i在LLI 情况下，净复合率作为材料和温度的一个常数，线性的取决于过剩载流子浓度。

第五讲蛋白质表面相互作用蛋白质表面相互作用的重要性z调节细胞粘附z激发生物体系列反应，产生异体反应z诊断分析/传感装置的设计和使用的关键z激发其他生物粘附：蛋白污染，细菌粘附等关于蛋白质的基础知识：z细胞的最大有机组成（~18wt%/H2O=70%）；细胞外基质和血浆（7wt%/H2O=90%）。

z成千上万的存在—每一种都是DNA上的一个基因编码。

z涉及细胞的所有活动：粘附，移动，分泌，识别，繁殖和凋亡（死亡）。

z在体液中可溶或不溶不溶蛋白质—组成结构和运动功能的部分；也能调节细胞功能（通过吸附肽）可溶蛋白质—通过吸附、粘附等强烈地控制细胞功能z分子量存在很大的范围“肽”（若干个氨基酸）：激素，药物试剂例如：脑下垂体后叶荷尔蒙（催产素）：刺激子宫收缩（9 a.a.）天(门)冬氨酰苯丙氨酸甲酯：天然甜味剂 (2 a.a.)“多肽”（~ 10-100氨基酸）激素，生长因子例如：胰岛素：两条多肽链（30&21a.a.）表皮生长因子(45a.a)“蛋白质”（100’s-1000’s氨基酸）例如：血清白蛋白（550 a.a.）阿朴脂蛋白B ：胆固醇转运蛋白(4536 a.a.)蛋白质的作用：z结构/支架：细胞外基质组分，作为细胞物理支持例如：胶原——纤维状，提供强度弹性蛋白——为韧带提供弹性支持蛋白：纤维连接蛋白、层粘蛋白、体外连接蛋白——调节细胞吸附糖蛋白z酶：通过释放键能，降低通过稳定态的能量，催化化学反应。

例如：脲酶——催化水解尿素z转运：结合并运输特殊分子到达器官或者穿越细胞膜。

例如：血色素-运输氧气到组织血清白蛋白-转运脂肪酸z运动：提供细胞运动机制。

例如聚合（解聚）和收缩例如：肌肉中的肌动蛋白，肌浆球蛋白z防御：蛋白质构成免疫反应和凝固机制例如：免疫球蛋白（抗体）一种Y形的蛋白质，它结合抗原（异种蛋白）诱导聚集形成。

纤维蛋白原和凝血酶—通过结合血小板受体诱导产生凝血。

z调控：细胞因子—调节细胞行为。