化工专业研究生"结晶过程原理"课程全英语教学实践

以培养具有国际视野的化工类复合应用型卓越人才为目的,开展了青海大学化学工程与技术专业研究生的"结晶过程原理"全英语课程建设,以全英语模式开展教学活动,在课程内容、教学组织模式和教材方面做了大量的探索和实践。结果表明,用英文教授专业课,可以锻炼研究生专业英语的应用能力和学术英语水平,有助于提升研究生的科研创新和国际交流能力。     

"双一流"背景下地方高校化学化工类研究生创新培养新举措

在国家“双一流”建设的背景下,针对我国地方院校化学化工类研究生存在的高水平科研导师少,创新平台少以及创新能力不足等问题,以吉首大学化学化工类研究生培养为例,探索研究生培养过程中的思想道德教育、指导教师团队组建、研究生课程体系改革、联合培养基地建设和论文质量监控等五个方向的新举措,提出德育领先,创新驱动,地方高校化学化工类研究生培养新模式,总结了吉首大学化学化工类研究生创新培养取得的成绩。     

化工类研究生专业英语创新性教学模式改革与实践

专业英语是化工类研究生教学课程的重要组成部分,对研究生英语应用能力的培养及科研能力的提高起重要作用。文章通过分析,阐述了化工类研究生专业英语课程的特点以及该课教、学环节中普遍存在的问题,并结合教学实践,分别在完善专业英语教材建设、改革教学方法及提高学生对专业英语课程重视程度等方面提出了一些新的探索与建议。     

新工科背景下材料与化工全日制专业学位研究生科研能力的培养

专业学位研究生教育是培养高层次应用型专门人才的主渠道。新工科对工程科技人才提出了更高要求。齐齐哈尔大学材料与化工类全日制专业学位研究生在科研能力培养方面进行了一些有益的实践和探索,在培养方案、导师队伍、论文选题、理论学习等方面,形成了一套切实可行的教学体系,使专业硕士研究生的科研创新能力明显提高。     

基于科研平台的研究生创新创业与思政教育融合探索与实践

研究生思政教育是研究生教育的重要组成部分.如何加强和改进研究生思政教育是事关我国社会主义现代化建设拔尖创新人才培养的重大问题.本文在多年探索和实践的基础上,以科研平台为载体,构建以“红色教育、暑期实践、五四汇报”三位一体融合创新创业的化学化工类研究生思政教育活动新模式,为高校的研究生创新创业教育与思政教育提供一种新的实...     

专业认证背景下化工研究生人才培养模式探索

四川轻化工大学化学工程与工艺专业连续两次通过专业认证,在此背景下化工专业研究生创新人才培养模式面临新挑战。依靠成果导向、学生中心及持续改进的认证理念,对新时期化工类研究生人才培养模式进行探析,提出研究生教育是创新人才培养体系和高水平大学建设的重要内容。为满足专业认证要求,关键是完善和改革人才培养模式,具体包括:试行弹性学制;优化培养方案;改革课程教学;实施科技创新;鼓励学术交流;建设文化生活环境。     

化工类研究生专业英语课程教学模式探索

在学术国际化和我国高等教育"双一流"建设背景下,研究生学术英语应用能力提升面临新挑战和高要求。以ESAP+EGAP为教学内容,采用"讲授+Seminar+ESAP口头报告+EGAP模拟国际会议"的课堂组织模式,形成化工类研究生专业英语课程教学体系,提升研究生文献阅读理解和SCI论文撰写能力,教学效果良好。     

研究生学位课程化学反应工程教材建设概况评述

化学反应工程是化学工程与工艺类专业的学位必修课,在本科和研究生教学中占有重要地位。文章通过对几部典型化学反应工程本科教材与研究生教材的对比,发现两者内容构成无太大差别,只是后者的内容更具专业性,更侧重实际过程。但是,本科生和研究生课程的教材都缺乏现代科技的融入,无法与当前的学术研究前沿和工业需求接轨。文章据此指出研究生化学反应工程课程教材内容应充分反映当前的研究理念,还提出了教材建设的思路。     

地方高校化工类研究生创新培养模式探讨

以湖南西部地区地方高校-吉首大学化工类硕士研究生教育为例,重点探讨该校在提高化工类研究生培养质量的几点做法,结合西部地区地方高校的实际情况,探索和实践经济欠发达地区地方高校化工类研究生培养的新模式。经过多年的研究生教育实践,在保障和提高经济欠发达地区地方高校化工类研究生培养质量、增强研究生创新思维和综合素质等方面收到了较好的效果。     

化工类研究生线上教学创新及质量提升策略

化工类研究生课程教学借助线上平台,能够充分发挥“互联网+教育”的优势,切实提高教育教学质量。针对课程建设和时代发展的需要,以《腐蚀控制技术》课程为研究载体,通过微格设计、模式优化、精准考核探讨了线上教学创新实践,并从研究生教育本质出发,结合化工类课程特点提出了教学质量提升的有效策略。     

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。