独立学院药剂学教学改革与探索

结合独立学院的办学宗旨、学生特点以及个人教学体会,论述了药剂学课程在教学内容、方法、方式以及考核模式方面的改革。充分体现素质教育和培养应用型人才的目标,提高学生的综合能力。     

《物理化学》在独立学院中以学生为主的教学改革

《物理化学》是化学工程与工艺专业比较难学的一门专业基础课程.为提高独立学院的教学质量,以学生作为教学的主角,文章从教学内容、教学方法、教学手段和考核方式4个方面对《物理化学》课程教学进行了探索性改革.改革教学效果良好,使本院学生的学习兴趣、学习主动性有了较大的提高.     

浅谈独立学院物理化学教学的点滴体会

基于物理化学的课程特点及学生的现状,从教学内容的调整与更新、教学方法、教学手段、教学思想的改革等方面就如何提高独立学院物理化学的教学水平谈了几点体会,并强调指出提高教师自身素质的重要性。     

独立学院食品类专业仪器分析课程教学探讨

仪器分析是食品类专业的核心课程之一。综述了独立学院学生特点及仪器分析教学现状,从课程的教学内容、教学方法、教学体系、母校资源以及校企合作等方面进行教学改革与探讨,以提高该课程的教学质量,培养符合社会需求的高级应用型人才。     

独立学院化工设备机械基础教学改革的探索

我们从化工设备机械基础课程的现状出发,结合独立学院人才培养要求和学生特点,从教学内容、教学方法、教学手段等方面进行教学改革,探索出了适合独立学院的教学模式,对培养高素质应用型人才有极大帮助。     

独立学院无机及分析化学教学改革与实践

针对独立学院生工专业无机及分析化学课程教学中存在的问题,我们对课程内容作出了优化调整,运用多种教学手段提高了课堂教学质量,促进了学生的学习积极性;对实践环节进行了改革,提高学生的动手能力。通过对课程的设计改革,建立起适合独立学院生工专业特色的教学模式。     

独立学院《化工原理》课程教学改革的探索

结合化工原理课程的特点及独立学院教学现状,从教学内容,教学手段及考核方式等几个方面对化工原理课程进行了教学改革,旨在提高教学质量,为应用型人才的培养奠定基础。     

《生物技术综合实验》教学体系改革及效果评价

为了培养学生的实践能力和创新意识,根据生物技术专业特点,对《生物技术综合实验》课程在教学内容和教学方法上,提出了改革措施。结合自身学科发展特点,优化课程体系、增删教学内容、完善实验考核方式,收到了较好的教学效果,提高了学生的动手操作能力。实践证明该门课程的改革符合独立学院培养学生的目标。     

地方高校独立学院分析化学课程教学改革探索

根据地方高校独立学院学生的学习特点和现状以及分析化学课程的学科特点,分别从理论教学,实验教学和条件建设三个方面对独立学院分析化学课程教学改革进行了探索,从而达到提高教师教学质量,激发学生学习兴趣,改善课程教学效果,培养学生综合能力的目的。     

独立学院化学类实验课程教学体系的整合与建立

从独立学院化学类实验课程的实验教学管理机制、实验教学人力资源、实验课程教学内容、实验课程全面开放教学、实验课程全部独立设课、鼓励并加强教师实验教学研究、加强青年教师的培养、组织教材建设等几个方面,讨论了独立学院化学类实验课程教学体系的整合与建立     

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。