论学生干部在新建高职院校学生思想政治工作中的突出作用

思想政治工作是高校工作的重要组成部分，特别对新建高职院校健康、稳定的发展具有举足轻重的作用；学生干部作为学生中的特殊群体，可以成为思想政治工作很好的切入点。从新建高职院校学生的思想状况、学生干部的自身特点和发挥学生干部作用应注意的问题等几方面进行了论述。     

虚拟仿真实训教学应用于化工院校的研究

传统高职院校实训教学过程中存在学生多、资金不足、场地缺乏等缺点,结合虚拟仿真软件搭建的虚拟实训教学环境可以弥补不足,同时还能提高学生的主动思考意识和动手能力,对高职院校的实践教学有很大的促进作用。     

基于校企“双元”的高职分析化学检测课程教学改革研究

目前高职分析化学检测课程教学内容存在不足，不太适用实际岗位发展需求。试从校企合作的角度来探讨高职分析化学检测课程教学改革，包括化学分析检测课程现状，课程教学改革举措。分析化学检测课程改革以校企合作为基础，增加课程思政元素，将实际工作流程纳入到教学之中，贴合岗位需求，借助多样化的教学手段，提高了学生学习积极性，学生的岗位竞争能力得到增强，教学与实际工作岗位的匹配程度显著提升。     

浅谈化工高职院校教师队伍建设

最近几年,高职院校受到中央和地方高度重视,但由于高职院校起步晚,因此在不少方面存在着一些不足,需要在实践中不断完善。下面本文就高职院校教师队伍建设中存在一些不足做一个探讨。笔者认为,高职院校教师主要存在以下几个方面的不足:1.动手能力不强。由于传统教育注重理论知识的传授,大部分教师动手能力不强,有职业资格证的也不多,熟的操作技能就更谈不上。教师能力不强,必然影响到学生的质量。2.结构不合理。在部分高职院校当中,理论教师偏多,实习指导教师不足。高职院校让学生进行大量的实习操作,是其教学环节中极为重要的一环,但目前我…     

论高职化学实践教学课堂艺术

高职化学实践教学的任务是训练学生掌握必要的实验操作技能,提高实际动手能力,文章分析了高职化学实践课程传统教学模式存在的不足,并根据教学实践经验,提出了几种适合在高职实践教学中应用的"以学生为本",利于发挥学生学习的主动性和提升学生的综合能力的教学课堂艺术。     

高职院校《食品生物化学》课程改革初探

针对当前高职院校食品生物化学课程教学中存在的缺点与不足,探讨了高职院校食品生物化学的课程设计思路、教学内容选取、考核方法改革、现代化教学手段的利用等内容,期望该教研改革能有效地促进学生对食品生物化学知识的理解和掌握,以适应对食品类专业人才的培养需求。     

高职院校现代学徒制人才培养模式路径构建的研究

本文研究高职院校如何利用现代学徒制进行人才培养,当前很多高职院校存在缺少和企业合作、教学制度等问题,文章通过分析当前高职院校在培养模式上存在的不足,探索高职院校提升培养水平的路径。     

助人自助理念下高职院校单招学生资助工作问题与对策研究

助人自助是社会工作最核心的理念和基本原则,将助人自助理念融入高职院校单招学生资助工作,既可以发挥社会工作的核心理念优势运用社工专业方法发展学校社会工作,又可以为高校学生资助工作注入新的工作思路和方法。以社会工作助人自助理念为出发点,通过分析当下高职院校单招学生资助工作中存在的主要问题和不足,在结合高职院校单招学生自身特征的基础上,尝试为高职院校学生资助育人工作的优化提出对策建议,旨在为高职院校单招学生资助育人工作提供新思路新方法。     

高职化学实验室建设与管理现状分析及我院改革

目前,在大多数高职院校,化学实验室受到重视不够,实验室存在这硬件设施不足、管理人员配备不合理和管理制度落后不科学的现象,大大制约了实验教学甚至是高职教育的发展。我院从自身实际情况出发,从观念、人资、硬件、政策、制度等方面进行化学实验室的改革。     

浅谈高职学生心理健康状况

对两所高校的150多名高职学生采取整群随机抽样的方法进行心理健康现状调查，以SCL-90自评量表测评分!。结果表明：高职学生的SCL-90得分总体水平高于中国成人常模，有13％的高职学生存在一种或多种的心理健康问题，高职学生的心理健康问题主要表现为躯体化、强迫、抑郁、焦虑、敌对、恐怖等症状。     

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。