工学合一,双向选择,注重实效——制药化工专业学生毕业实习新模式探索

本文对传统毕业实习模式存在的问题进行了分析,结合制药化工专业和台州医药化工产业的特点,提出了"工学合一,双向选择,注重实效"的毕业实习新模式,并进行了探索和实践。实践证明,新的实习模式成效显著,适应制药化工专业应用型人才培养的要求。     

化工专业毕业实习现状与改进措施的探讨

化工专业毕业实习是化工专业的一项重要实践环节,也是高校化工类专业教学计划的重要组成部分。学生通过毕业实习可以掌握一定的专业技能,对化工专业知识起到巩固、促进的作用。因而在高校本科教学计划和教学培养方案中占有十分重要的地位。分析了化工专业毕业实习的主要形式以及实习过程中所存在的突出问题,最后对化工实习的改进措施进行了探讨。     

化工专业毕业设计、实习与就业一体化研究

化工专业毕业设计、实习与就业工作之间的矛盾和脱节,导致化工专业人才培养质量下降。建立毕业设计、实习与就业一体化模式,通过完善化工专业人才培养方案,统筹安排毕业实习、毕业设计时间,深入开展校企产学研合作,实现学校和企业对学生毕业实习和毕业设计的双重指导,使毕业实习、毕业设计和就业工作协调推进,良性发展。     

化工专业毕业实习与毕业论文模式改革与探索

毕业实习与毕业论文是本科教学忑作中的一个重要环节,针对化工专业学生毕业实习与毕业论文中存在的问题,对毕业实习与毕业论文教学模式进行了研究与探讨,提出了三种模式,取得了较好的效果。     

基于CDIO模式的化工专业实习体系的构建与实践

依照CDIO这一国际工程教育的创新模式,对化学工程与工艺专业实习实践教学进行了改革,构筑了包括化工认识实习、化工实习实训、化工生产实习、化工毕业实习在内的多层次的实习教学体系。CDIO模式下的实习教学针对不同层次的能力培养目标规划实习教学的各级环节,实现教学过程的层层强化;根据专业知识体系设计实习内容,实现与课堂教学的有效融合;营造以学生为主体的教学氛围,激发学生的主观能动性,实现学生素质能力的全面提升。     

工科化学专业毕业实习改革模式初探

在市场经济转型的环境中,高校办学面临扩招以及经费不足造成的压力,致使工科化学专业毕业实习难以正常进行,因此对毕业实习模式进行改革势在必行。我院探索了仿真实训、毕业实习与就业一体化以及毕业实习与毕业设计一体化三种新的模式。经过实践证明,这三种模式均有效地提高了人才培养质。     

化工专业认识实习的探索与实践——以嘉兴学院南湖学院化工专业认识实习为例

化工专业认识实习是化工专业的主要实践教学环节。为适应素质教育形势,完成应用型、技能型高级专门人才的培养目标,有必要对其实习进行探索并完善。本文结合嘉兴学院南湖学院化工专业认识实习面临的一些问题,就如何安排指导学生的认识实习,以提高专业学习的兴趣与效果进行了探讨。     

校企合作共建校外化工实践基地的现状与探索

化工专业学生在校外化工实践基地参加毕业实习,可以使学生学习和了解如何将原料转变成成品的生产全过程、管理体系和企业文化.在当今工程专业认证的背景下,毕业实习是化工专业的学生将所学化工理论知识进行实践与创新能力培养的重要环节,也是达成化工专业人才培养要求和目标的关键环节.本文结合目前校企合作共建化工实践基地中遇到的教师对实...     

化工安全专业实习环节探讨和实践

以提高化工安全专业人才培养质量为目标,结合化工安全人才的社会需求和课程特点,对该专业的认识实习、生产实习和毕业实习三个阶段的培养方案进行合理规划。认识实习以化工行业的职业卫生与安全法规为主,生产实习以化工安全技术为主,毕业实习以化工企业安全现状评价为主。通过三个阶段的实习安排,达到了实践教学目标,保障了应用人才的培养质量。     

建立稳定的毕业实习基地 确保实习高质量地完成

毕业实习是极其重要的实践性教学环节之一。在这一教学过程中,要让学生进一步了解实际生产过程,掌握把课堂内学到的理论知识运用于分析与解决实际问题的基本方法,同时为后继的毕业设计做大量的资料收集工作。因此,重视毕业实习工作,采取措施确保毕业实习的质量,是工程教育的重要工作。几年的实践表明,建立稳定的毕业实习基地,有利于提高毕业实习的质量。 建立稳定的实习基地,首先在于根据专业性质选好实习点。对于化工类工科专业而言,在毕业实习期间,应尽可能多地让学生了解化工生产过程,不但要了解化工生产工艺过程、工艺条件的选取及控制、化工设备的选型及其工艺设计条件的确定,     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009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、环氧树脂、不饱和聚酯树脂)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。     

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.