有机化学英语论文Abstract In this work the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol Textural parameters of four kinds of polymeric resins namely AB-8 D4006 NKA-II and D16 resin were separately measuredby ASAP The surface chemistry of these polymeric resins was determined by means of inverse gaschromatography (IGC) and diffusereflectance infrared Fourier transform spectroscopy (DRIFTS) Static equilibrium adsorption experiments were carried out to obtain theisotherms of phenol on the polymeric It was shown that NKA-II and AB-8 resin possessed relatively high BET surface areas andmicropore volumes while D4006 and D16 resin possessed comparatively low BET surface areas and micropore The results of IGCexperiments revealed that NKA-II resin had extraordinary high specific component of the free energy of adsorption both for polar acetone andbenzene probe and thus extraordinary strong surface polarity compared to the other polymeric It was also found that the isotherm ofphenol on NKA-II was much higher than that on the other polymeric resins due to its strongest surface polarity and largest micropore volumeamong four kinds of These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric 2004 Elsevier BV All rights Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography
你看看这个论文行不，字数太多，发不全。 要是可以，发个邮件给我，然后给你发过去！ 邮箱： PROCESS FOR PRODUCING PURIFIED AMMONIUM MOLYBDATE SOLUTION Abstract of the disclosure: Molybdenum trioxide containing potassium is heated to a temperature sufficiently high ( at least about 525°C) to render the potassium soluble in hot water， the heated trioxide is quenched to less than about 400°C at a rate of at least about 30°C per minute， the quenched trioxide is leached with hot water (between about 50°C and about 100°C) to leach the solubilized potassium and after liquid-solids separation the molybdenum trioxide is dissolved in ammonium hydroxide to form ammonium molybdates， which can be recovered from solution and then can be calcined to chemical grade molybdic The process is advantageously conducted in conjunction with the roasting of 纯化钼酸铵溶液的生产工艺 摘要披露：含有钾的三氧化钼加热到相当高的温度（即大约至少525°C），使钾易溶于热水，在至少约每分钟30°C的一个等级，淬火少于约400°C加热三氧化物，用热水（在约50°C 和 100°C之间）沥滤淬火的三氧化物，是为了浸出可溶性钾和液固体分离后三氧化钼溶解于氢氧化铵形成钼酸铵，这样形成的钼酸铵可以从溶液中得到，然后可以煅烧成化学级钼氧化物。这个过程在有利进行的同时，辉钼矿也在焙烧。
高中英语整体性教学复述法的实践和体会为了使高中英语教学达到新大纲的要求，我在教学实践中作了些尝试，把课 堂教学由注重语言知识的讲授 课转变成注重语言能力的训练课，把培养和训练 学生的语感、语言习惯当作英语教学的中心任务。我在教学中 利用现行高中精 读课文，采用整体性教学复述法，努力把传授新知识和训练运用语言能力结合起 来，使课文教 学成为教师、教材、学生相互作用的积极过程，在培养学生语言 能力方面收到了良好的效果。在此谨从实践的 角度谈谈我的具体做法。复述是口头表达课文内容的言语过程，是给学生提供施展运用语言能力的机 会。这一训练不仅能提高学生 的听力、语感、改进语音语调，还能促进学生的 记忆、思维和自学能力。在实际教学中它已成为语言知识转化 为言语能力，培 养听、说、读、写能力的重要途径。为了获得有效的复述效果，我始终遵循记忆 规律，重视各 教学环节的密切配合，利用行之有效的方法，使学生积极参与到 这个有纲可循，有词可用，有话可说的四步教 学活动中来。第一步：（不要求预习课文）由教师将课文复述一遍，在复述过程中出现部 分生词短语，并用简明英语释 义。（可用板书、幻灯、投影等伴随教师复述。）第二步：根据教师复述的内容要求学生回答问题，目的在于检查学生是否理 解课文大概内容。在提问题时 要简略、清楚、易懂，注意调动所有学生的积极 性，可多用些"yes"、"No"questions。第三步：学生在阅读课文后回答一些比第二步复杂些的问题。（在回答问题 的过程中学生会自然地使用第 一步中所出现的生词短语。）然后再引导他们将这 些问题的答案串成复述内容。下面是高中英语第二册《体育运动》一课复述法三步的具体设计。STeacher Presentation Retell the text with the following words and expressions onthe blackboard:joyful and relaxing;have a game of;be of great value;popularform of relaxation;amusement;go all about;build our SLearner Presentation According to what the teacher says answer the following:(1)Is it joyful and relaxing to have sports and games?(2)Do many people take part in different kinds of sports?(3)Some people seem to think that sports and games are unimportant things，don't they?(4)Do people have different ideas about sports and games?Step3，Learner Presentation Read the text again and try to pick out a topic sentence foreach Retell the text paragraph by The first paragraph:Sports and games are perhaps the most popular forms of We can learn that Swimming in a river in summer Having a game of table tennis almost all can enjoy Watching a close game of … … …The second paragraph:They should not be treated only as (We can learnthatfrom the third and the fourth )The third:Sports and games build our bodies(We can learn that fromplaying table tennis)The fourth:Sports and games are also very useful for character-(We can compare the lessons at school with activities on thesports ) 以上三步如下简示：teacher retelling→students answering"yes"or"NO" reading the passage questions→students answering further questions retelling it paragraph by paragraph它以递进的方式给学生提供了从内容到语言材料理解和掌握的渐进过程，为 第四步复述全篇课文创造了条 件。第四步：复述全篇课文，这一环节是对前三步所做大量训练工作效果的检测， 也是对学生大面积进行能力 训练的时机。利用板书、表格、表演以及主题画来 组织学生复述课文，周密组织好这一环节才能最后达到预期 教学目的。我在《体育运动》一课在第四步的板书是这样设计的：（以正中sports and games为中心，先由上至下， 再从左至右进行复述）。板书必须做到重点突出，具有概括性和条理性，并且简明生动，这样诱导学 生复述全篇课文不仅能达到对 课文内容及语言特点的理解，还能培养学生口头 造句和作文的能力。 复述法的实施过程也就是利用内容设置情景引导学生进行交际的过程。针对 不同的教材，不同的教学对象 和不同的时机灵活利用各种行之有效的方法，使 复述发挥更大的效用，以提高实际运用语言的能力，这是我在 课程设计中的首 要原则。
