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基础化学实验教学作为中药学专业以及其它药学类专业实践教学的基础部分,是推动中药学专业以及其它药学类专业持续发展的先决条件。在中药学专业认证的大背景下,高度重视中药学专业以及其它药学类专业基础化学实验教学,培养学生扎实的专业基础知识和技能,有利于推动中药学以及其它药学类专业教育和人才培养模式改革。文章围绕基础化学实验教学改革中实验教学体系,实验课程方案、实验室开放度、实验原始数据等方面,在"以评促建"指导思想下,提出相应改革措施,以专业认证为契机,进一步深化教学改革,努力推进中药学以及其它药学类专业基础化学实验教学体系建设,加强教育方式的现代化建设,为全国医药类院校实验教学体制改革起到示范作用。 相似文献
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王燕王月荣熊焰殷馨俞晔孙学芹 《化工高等教育》2018,(4):69-72
本文介绍了华东理工大学化学实验教学中心实验室安全管理体系的建设和实践。我们按照EHS要求,从实验室安全管理制度建设、管理队伍建设、安全教育体系建设、安全环境建设,实验室安全硬件建设等方面探索了化学实验室的安全管理工作。 相似文献
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化学实验室作为中职化工类专业实验教学的主要载体,其建设和管理的好坏,直接关系到教学质量的优劣。为了保证实验教学的正常进行,需要解决实验室的安全问题。文章从中职学校实验室安全制度的管理,落实,实验室安全设施的建设以及实验室的安全教育几个方面阐述了如何做到中职校精细化工实验室的安全管理,以保证良好的教学质量。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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The miscibility of various amorphous polybutadienes with mixed microstructures of 1,4 addition units (cis, 1,4 and trans 1,4) and 1,2 addition units have been investigated. The studies here involved optical transparency, differential scanning calorimetry, and small angle light scattering. It was found that a 90 percent (cis) 1, 4 addition polybutadiene was immiscible with high (91 percent) 1,2 addition polybutadiene. Reduction of the 1,2 content to 71 percent induced an upper critical solution temperature (UCST) with the cis 1,4 polymer. Polybutadienes with 50 percent and 10 percent 1,2 contents were miscible above the crystalline melting temperature of the cis 1,4 polybutadiene. Immiscibility of the 91 percent 1,2 addition polymer was also found with a 10 percent 1,2 polybutadiene. The latter polymer also exhibits an UCST with the 71 percent 1,2 polymer. The results are used to interpret the characteristics of blends of polybutadienes of varying microstructure. 相似文献
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以F类粉煤灰为例,详细介绍了测定粉煤灰中烧失量的步骤、计算数学模型、影响测量不确定度的因素以及各项测量不确定度分量评定,人员、设备、材料、方法、环境都是影响测量不确定的因素。 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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