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《材料力学性能》课程是本校材料与环境工程学院功能材料专业本科生的专业任选课。本文针对目前《材料力学性能》课程教学效果和学生反馈的实际情况,结合培养目标、教学思路以及教学方式,对《材料力学性能》课程的教学改革进行了初步思考与探索,有望针对不同专业的学生,摸索出一套更完善与更专业的课程教学模式,培养出符合社会需求的功能材料领域的人才。 相似文献
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“立德树人”是高等教育的根本任务。在“三全育人”课程思政的新时代背景下,实施《工程化学》课程思政的教学改革具有积极意义。结合材料科学与工程专业《工程化学》课程特点,深入挖掘《工程化学》中蕴含的人文思政元素,采取“化学发展史引领,科学思维启发,专业伦理渗透,工匠精神培养”四联动的举措,将思政元素与专业知识有机融合,对《工程化学》课程思政进行教学改革的初步探索。 相似文献
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《材料力学》是高等院校工科专业学生必修的一门专业基础课,为后续课程的学习和解决工程实际问题提供力学理论指导。本文结合实际教学过程中存在的问题,从教学方法改革和考核方式等方面进行了探讨,提出了《材料力学》教学改革的方向。 相似文献
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基于现阶段《医用化学》课程教学中存在的问题,首先阐述了采用“演示实验与TED演讲”教学的必要性和对应的教学策略。接着以“配位化合物”教学为例,论述了基于“演示实验与TED演讲”教学实践,将演示实验和TED演讲中涉及的医学案例贯穿整个教学过程。最后结合教学过程遇到的问题进行了教学反思。该教学模式对于提升《医用化学》课程教学质量、科学育人目标的达成有着明显的效果。 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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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献