赴制药企业暑期社会实践有感

大学生暑期社会实践,是大学生利用暑期开展的各类实践活动的总称,是培养高素质有用之才、健全学生人格的重要组成部分。本论文主要描述制药工程专业学生赴制药企业进行社会实践的经历,及此次实践活动的感想。     

关于加强本科生实践实习基地建设的几点思考

本科生实践实习基地是本科生社会实践活动得以长期、有效开展的必要条件,也是高校自身发展的重要组成部分,保证了本科生实践活动长期稳定有效地进行。本文分析了已有的本科生实践实习基地的建设成果,结合高校大学生社会实践活动和基地建设的实际情况,对本科生实践实习基地的不足进行了论述,并提出了进一步加强建设的具体措施,最后对今后基地的发展趋势进行了展望。     

化学辅修生物专业进行的一次有意义的社会实践

大学生社会实践是高等教育活动的重要环节.但是长期以来没有确立有效的运行机制.化学辅修生物专业学生开展了"湘江水质的分析与湘江治理与污染现状调查"实践活动.这次活动,激发了同学们认真学习、切实掌握本领的积极性;萌发了他们期望了解社会、体察国情民情的思想意识.通过这次活动,还对大学生有效地开展社会实践进行了有益的探讨.     

立足面上 着眼教育 就近就便 讲究实效

高校教育中要解决脱离工农、脱离劳动、脱离实际、脱离国情的现象,关键在于全面贯彻党的教育方针,加强学生的劳动教育和社会实践环节。去年,我们结合本院实际,按照国家教委提出的“社会实践活动是我国高等教育的重要组成部分”这一精神,决定把社会实践列为必修课,制定了《南京化工学院社会实践考核及评选办法》。 为了把社会实践活动切实开展起来,党委多次召开中层干部、学生工作干部会议,专门进行了研究与部署,要求由团委具体负责组织有关部门协同配合,共同做好该项工作。暑假前夕,各系部进行了动员。班主任下班级,对学生提出了明确要求,要求每个学生参加社会实践七天以上,完成2000字以上的社会实践报告,并要填写登记表,有接受单位的评语和加盖公章。由于要     

开展课外科技活动培养学生创新能力

课外科技活动是培养大学生创新能力的主要途径,本文着重论述了开展大学生课外科技活动对培养创新能力的载体功能、课外科技活动开展的现状和存在问题,并从改进课外科技竞赛方法、完善课外科技活动机制、完善社会实践环节、重视科技型社团建设几个方面阐述了解决问题的对策.     

浅谈高校药学院实验室安全管理工作

高校实验室是培养学生实践能力和社会责任感的重要基地。而实验室安全管理是保证实验室开展其他一切活动的前提。江南大学药学院以本科实验教学为安全教育重要平台,给学生灌输安全理念和安全知识;以科研团队为单位,建立"实验室安全准入制度"。探讨了药学院层面从完善硬件、提高师生安全意识、落实安全管理制度和发挥安全监督体系作用等方面开展的工作。     

大学生社会实践活动项目化运作研究

大学生社会实践活动项目化运作过程分析表明,项目化运作能使实践内容与专业紧密结合,实践目的明确,实践形式丰富,实践经费充足;经专业教师的精心指导,将充分发挥社会实践活动实践育人和服务社会的作用。因此,大学生社会实践活动项目化运作是提升社会实践活动效果的一种新途径、新尝试、新探索。     

开展第二课堂活动是培养学生创新精神和实践能力的有效途径

本文从理论和实践的结合上论述了第二课堂活动在创新教育中的重要作用、第二课堂活动的形式、内容及取得的效果.实践证明,课内课外有机结合,可以为学生营造良好的创新环境;开展第二课堂活动,是培养学生创新精神和实践能力的有效途径之一.     

以卓越工程师培养为导向,积极开展大学生课外科技活动

课外科技活动是提高大学生实践能力和创新意识的有效手段,是校园文化建设的重要载体。文中提出通过积极开展大学生课外科技活动,推进卓越工程师的培养。实践表明,开展课外科技活动不仅丰富了学生的校园生活,激发了学习兴趣,还提高了学生的动手实践能力和创新能力,对促进我国工程教育改革与创新有极其重要的意义。     

有色冶金萃取水相除油工艺及设备

油水分离是我国在开展有色冶金生产加工活动过程中的重要技术实践环节,积极选择运用适当种类的技术设备和技术方法开展油水分离萃取技术工作,对于支持和保障有色冶金生产加工技术活动在具体化的组织开展过程中顺利获取到最优化的综合收益具备重要意义。本文围绕有色冶金萃取水相除油工艺及设备论题,择取两个具体方面展开了简要阐释。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。