共查询到20条相似文献,搜索用时 625 毫秒
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为了提高环境类人才实践与创新能力,重构了符合新工科理念的环境化学“素养、能力、知识”一体化课程目标;基于科研反哺课程内容增补了新工科元素“环境计算化学——化学品构效关系;基于线上线下混合式构建了“三三三”教学模式,进行了多元化过程考核方式探索,教学设计强化了学生的能力培养与价值塑造。课程建设实践表明,学生的学习获得感与其课堂参与度呈现正相关,基于身边老师的科研反哺和前沿拓展,更能激发学生的应用挑战兴趣,促进提升实践能力和创新能力。环境化学课程实现了全方位新工科内涵式建设,以期为环境工程专业的新工科升级改造提供借鉴。 相似文献
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工科化学是面向非化学化工类专业本科生的一门有特色的重要化学课程,是化学与工程技术间的桥梁,是培养现代化工程技术应用型人才知识、能力和素质整体结构的组成部分。在日新月异新的历史时期,工科化学教育面临着全球化、大众化和信息化挑战。更为重要的是,面向广大大一新生的工科化学课程在高校落实立德树人根本任务中处于非常重要的地位。教材作为教育的重要载体,新时代对工科化学教材的建设提出了新的挑战和要求。介绍了新时代背景下北京交通大学工科化学教材立体化、长效化建设的探索和实践。 相似文献
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为提高药物制剂工程课程的教学质量,尝试在该课程中的“水难溶性药物口服制剂技术”部分采用PBL教学法,并通过问卷调查的形式对该方法的教学效果进行评价。 相似文献
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李予雯 《广东微量元素科学》2003,10(11):61-64
简述了药学保健(PC)的内涵和发展,指出实施PC是一种必然趋势,也是当今及今后医院药学发展的方向。同时分析了在我国开展PC的可行性,并提出了实施PC的若干设想。 相似文献
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《Analytical letters》2012,45(13):2354-2362
Abstract A highly sensitive, spectrofluorometric method was developed for the determination of drotaverine HCl in pharmaceutical preparations. The proposed method is based on the measurement of the native fluorescence of the drug in 0.1 M H2SO4 at emission 465 nm after excitation at 295 nm. The relative fluorescence intensity-concentration plot was rectilinear over the range of 0.16–4 µg·ml?1, with good correlation (r = 0.9999) and a lower limit of detection (LOD) of 0.032 µg·ml?1. The proposed method was successfully applied for the determination of drotaverine HCl in tablets and ampoules with a recovery percentage of 100.42 ± 0.601,99.83 ± 0.82 and 99.43 ± 1.08, respectively, which were in accordance with those obtained by a compendial method. 相似文献
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苦味酸水浴液对固定在增塑的聚氯乙烯(PVC)膜中的蒽有可逆荧光熄灭作用,据此研制了测定苦味酸的荧光光化学传感器。该传感器的敏感膜的最佳组成为6~8mg蒽、50mgPvC粉、100mg邻苯二甲酸二异辛酯。测定苦味酸的浓度范围为3.04×10 ̄(-6)~6.16×10 ̄(-3)mol/L,重现性良好,响应时间为5~40秒,该传感器选择性好,许多常见亲脂明离子不干扰测定,可用于药物奎宁及辛可宁的间接测定。 相似文献
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《Analytical letters》2012,45(11):2385-2395
Abstract A spectrophotometric method for the determination of some pharmaceutical amides, hydrazides and thiols is described. The method is based on the reaction of the studied drugs with 2,2-diphenyl-1-picryl hydrazyl (DPPH). The latter is employed to abstract a hydrogen atom from the drugs thereby promoting a process of radical coupling. This results in a reduction of the violet colour of DPPH with the formation of the yellow coloured 2,2-diphenyl-1-picrylhydrazine (DPPH2). This fading in colour of DPPH reagent depends on the concentration of the drug being determined. Beer's law is obeyed in the ranges of 1–5 μg/ml (for isocarboxazid and gliclazide), 0.25–2.5 μg/ml (for isoniazid), 0.5–5 μg/ml (for iproniazid), 1–7 μg/ml (for tolazamide), 2–15 μg/ml (for captopril) and 1–6 μg/ml (for sulphathiourea). The validity of the method was tested by analysing the studied drugs in pure form as well as in tablets. Results of analyses were compared statistically with the official or reported methods. 相似文献
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《Analytical letters》2012,45(11):2409-2420
Abstract A method for the spectrofluorimetric determination of nafcillin is proposed (λex = 226 nm, λem = 366 nm), for concentrations between 0.10 and 1.0 μg mL?1. The method was performed in ethanol/water medium (30% V/V), at apparent pH 6.0 provided by adding of phosphate buffer solution with pH = 6.20. The obtained values of detection and determination limits are 0.016 and 0.054 μg mL?1, respectively. The method was successfully applied to assay a commercial injection containing nafcillin sodium monohydrate. 相似文献
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《Analytical letters》2012,45(3):417-423
Abstract A spectrofluorimetric method was developed for the determination of gatifloxacin. The emission peak for gatifloxacin was recorded at 495 nm upon excitation at 291 nm. The fluorescence process was pH dependent. The dynamic range for the method was 16–80 ng ml?1with detection limit of 3.97 ng ml?1. A linear relationship between the fluorescence intensity and the concentration of gatifloxacin solution was obtained with r 2 of 0.9968. The method has successfully applied to the determination of gatifloxacin in pure, authentic and aqueous samples. 相似文献
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综述了国内近年来光度分析法在药物分析中的研究与应用情况.就分光光度法、荧光光度法、化学发光法3种重要的分析方法,从反应条件、线性范围、灵敏度等方面介绍了光度分析法对不同反应体系的研究现状,展望了光度分析法在药物分析中的发展方向. 相似文献
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《Analytical letters》2012,45(12):925-939
Abstract Anodic stripping voltammetry is applied for measurement of copper and zinc in pharamaceutical formulations. Because of the inherent sensitivity and selectivity of stripping voltammetry toward amalgam forming metals, no sample preparation is required (except for acidic dissolution). Copper-zinc intermetallic interferences are eliminated by the addition of an excess of gallium or through utilization of a dual working electrode approach. Automation of this procedure is indicated from flow injection measurments at a rate of 15 per hour. 相似文献