专业选修课中学生学习主动性的培养——以《药物合成化学及工艺》课程的教学为例

专业选修课是“厚基础、宽口径”人才培养方案的重要组成部分,然而目前许多学生对此重视程度不够;以化学工程与工艺专业的专业选修课《药物合成化学及工艺》为例,对目前专业选修课程中存在问题进行了分析;结合课程自身特点及教学实践,从教学内容的安排,教学模式和手段的运用,以及学生学习效果的评价等多方面就如何提高选修课程的教学质量,激发学生的学习主动性等问题进行了探讨和总结。     

复方氟米松软膏联合窄谱中波紫外线治疗斑块型银屑病的疗效观察

目的:观察复方氟米松软膏联合窄谱中波紫外线治疗斑块型银屑病的疗效。方法:51例双侧皮损相对对称的斑块型银屑病患者,采用自身双侧对照,随机分为治疗组和对照组。治疗组外用复方氟米松软膏,对照组不涂药。两组均采用窄谱中波紫外线全身照射,疗程均为4周。结果:治疗组有效率86.27%,对照组为50.98%,两组疗效差异具有统计学意义(P<0.05);在治疗后的1、2、3、4周对皮损PASI评分,两组差异均有统计学意义(P<0.05)。结论:复方氟米松软膏联合窄谱中波紫外线治疗斑块型银屑病,疗效好,起效快,安全性高。     

Research on TDM approach of sharing BRT-lane supported by vehicle-infrastructure integration

In order to increase the availability of the part-time idle bus rapid transit lane (BRT-lane),a time divi-sion multiplexing (TDM) method to share BRT-lane with the vehicles besides BRT buses is propose...     

基于大数据的线上线下电商用户数据挖掘研究

分析了大数据环境下的O2O电商用户数据特征,提出O2O电商用户数据挖掘框架,并探讨数据挖掘流程和主要的数据挖掘方法,分别从O2O电商平台、O2O用户和O2O商家三者角度探讨了O2O电商用户数据挖掘的应用问题.研究认为:O2O用户数据挖掘框架包括数据来源层、数据收集层、数据组织层、数据分析层与数据应用层等层级;数据挖掘流程主要包括数据收集、数据预处理、数据挖掘及数据应用4个过程;O2O电商用户数据的挖掘应用包括精准营销、平台网站优化、欺诈分析与防范、个性化推荐、增值服务开发与产品创新等方面.     

“化学反应摩尔焓变的测定”实验优化

针对实验"化学反应摩尔焓变的测定"传统方法存在的问题,提出了采用数据拟合方法进行实验设计的思路,并改进了实验装置,研究了锌粉用量、转速和环境温度等对化学反应摩尔焓变测量值的影响。结果显示:当锌粉用量是理论用量的2.15倍,转速达650(r.min-1)以及在室温25℃时,测得的焓变值误差较小。由10组测量值分析得到相对误差为-0.94,实验重现性较好。     

《编译原理》实验教学改革及探索

概述了国内外著名高校《编译原理》实验的内容设置。利用电子科技大学新实验改革契机,对《编译原理》实验课程进行了改革探索,以实现一个简单的程序编译器为目的,采用C／C＋＋语言及Lex Yacc两种解决方案,在两个教学小班中进行了教学实践并进行比较。通过理论联系实践的方式,加强学生对编译原理知识的理解,提高学生的系统软件设计能力。     

Surface wetting processing on BNNT films by selective plasma modes

The wettability of boron nitride nanotube (BNNT) films was modified using a combination of pulsed and continuous wave (CW) mode plasma. The combined mode effectively modified the wettability of BNNT films and kept the nanostructures intact. The BNNT films changed from superhydrophobic to superhydrophilic after combined mode treatment at 600 W min. In contrast, the contact angle controllable decreased linearly in a controllable way with increasing energy input before eventually becoming superhydrophilic after 1000 W min of CW mode treatment. A high concentration of graft functional groups formed, along with point defects. More point defects formed when using combined modes and higher energy input. Mainly amine functional groups were grafted by combined mode plasma, while the CW mode plasma led to more formation of amide and imine on the BNNTs. Research into controllable wettability and selection of grafted functional groups should enable promising applications of BNNTs in composites and biology in the future.     

Development of DArT markers for a linkage map of flue-cured tobacco

Tobacco(Nicotiana tabacum) is one of the most economically important nonfood crops,and flue-cured tobacco accounts for approximately 80% of world tobacco production.An extremely narrow genetic diversity in the tobacco pool has led to a low efficiency of PCR-based molecular markers(such as AFLP and SSR).Diversity Arrays Technology(DArT) is a high-throughput hybridisation-based marker system that has been developed in many plants including wheat,which,like tobacco,has a complex genome.In this study,we developed a tobacco DArT chip that included 7680 representative sequence tags based on typical tobacco accessions.The 1076 DArT markers of flue-cured tobacco were identified and most(82.1%) of their polymorphism information contents(PICs) were greater than 0.4.An integrated linkage map that included 851 markers(238 DArT and 613 SSR),which is the highest density map of flue-cured tobacco to date,was constructed.This chip-based DArT system provides an alternative in high-throughput marker genotyping for tobacco.     

不同保存条件下白刺属植物基因组DNA的提取

以硅胶干燥的白刺叶片为材料,分别在-84℃、-20℃冰箱保存和常温保存,对三种不同保存条件下的白刺叶片进行DNA的提取,结果表明,在-84℃和-20℃冰箱里保存1～2年的材料均可采用3×CTAB法有效去除多糖、酚及蛋白质,可获得高质量基因组DNA,而常温保存半年的材料无法获得DNA．通过进行ISSR—PCR实验,提取的DNA扩增均可得到稳定、清晰、多态性好的PCR扩增图谱,-84℃保存的材料所得到的DNA在ISSR—PCR扩增中条楷数目和清晰唐明昴优于-20℃保存的材料．     

基于“以人为本”理念的高校学生管理

在坚持"以人为本",全面建设社会主义和谐社会的今天,在高校学生管理中贯彻以人为本的理念是非常必要和及时的。现代高校学生管理必须高度重视学生的主体地位,在管理工作中坚持以学生为本的理念,强调情感管理和学生自我管理,才能真正实现以人为本的高校学生管理。