基于OBE理念的《生化分析技术》教学改革的实践与探索

以"学生为主、成果为驱"的成效为本教育理念为指导,对生化分析技术课程从明确课程的教学目标、设定课程的教学活动及精确课程的教学评估等方面进行了教学改革的实践与探索。从理论教学和实践教学两方面入手,分别阐述以OBE理念为主导的生化分析技术教学改革。结果表明,该教学改革达到了预期目的,并取得了初步成功,大大提高了学生的学习达成度。     

新工科背景下化工分离工程的教学改革探索

化工分离工程是化工专业的核心课程,具有综合性和实践性强的特点。针对课程教学新知识拓展不充分、基于工程问题的教学内容渗入不够及学生实践创新能力培养不足等问题,该课程教学团队开展了以学生为中心的讨论式教学、案例式教学、实践教学及课程思政教学改革,为新工科背景下其他高校工科课程教学改革提供参考。     

《机械制造基础》实践教学改革研究

根据《机械制造基础》课程教学特点,分析实践教学现状和问题,结合枣庄学院实践教学实际,阐述了实践教学改革内容,提出了以应用能力为导向的实践教学措施,以期提高课程教学效果和学生工程素养,培养工程实际应用能力。     

基于微课建设的热工类课程教学改革与实践

热工类课程是工科专业的专业基础课程。为了提高学生的学习热情和学习效果,各高校陆续开展了热工类课程的教学改革与实践。文章在对我校热工学课程教学存在的问题进行剖析的基础上,介绍了以深层次微课建设为核心的热工学课程的教学改革。改革实践表明,微课建设不仅提高了教师的教学水平,而且调动了学生学习的积极性。     

表面活性剂课程教学的改革与实践探索

以所从事的表面活性剂理论教学、相关科学研究和实践为出发点,摸索了表面活性剂课程的教学改革,探讨了开展课程教学改革的方法和思路。实践证明:课程教学方式改革的实施,有效地提高了教学质量,提高了学生学习知识的兴趣和效果。     

基于应用型人才培养的分离工程精馏教学改革研究

文章以化工专业本科课程化工分离工程精馏部分教学为教学改革的切入点,从课堂教学方法及课程考核方式改革方面重点介绍了适合应用型人才培养目标的教学体系,结合教学实践进行初步尝试,培养学生的实践能力,提高学生的专业素质。     

基于项目驱动教学的化工装备CAE技术基础课程教学改革与实践

文章通过分析现有化工装备CAE技术基础课程教学中存在的问题,根据项目驱动教学模式,将CAE理论知识与项目实践相结合,构建了以项目驱动教学为导向的化工装备CAE技术基础课程教学体系。依据“三创型”人才的培养要求,笔者立足化工机械类专业的课程定位,明确化工装备CAE技术基础课程的教学目标,并从教学内容、教学方法、教学评价体系等方面进行了教学改革与实践。基于项目驱动教学的化工装备CAE技术基础课程教学改革与实践,对于提升学生的工程实践能力和解决实际问题的能力具有重要意义。     

生物工程专业《发酵工程》课程改革的研究

文章结合作者多年的教学实践,探讨了在发酵工程课程教学改革中,通过利用更新教学内容、优化教学手段、探索教学模式和改革考核方式等方面的课程教学改革的措施,以提高课堂教学质量及提高生物工程专业学生的专业素质和能力。     

关于化学化工文献检索课程教学的思考与探讨

文章分析了本科生化学化工文献检索课程教学的现状及存在的问题,在教学内容、教学方式、实践教学等方面阐述了本课程的特点和教学改进措施,提出了结合学生学科竞赛和毕业论文进行教学实践的环节,以探讨新形势下高等院校化学化工文献检索的教学改革。     

创新创业导向《现代生化分离技术》课程改革

培养具有创新创业精神的应用型高素质技能人才是当前高校教育改革的重要议题之一。本文以高职《现代生化分离技术》课程为例,从教学理念、教学内容、教学方式、考核方式和师资队伍等方面探索如何把创新创业教育融入专业课程的教学中,以期为高校课程实践教学改革提供参考。通过该课程教学改革与实践,学生获得了创新创业所需的部分核心知识和能力。     

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。