水性聚氨酯/竹炭抗静电涂膜的制备研究

选择环保型水性聚氨酯(WPU)作成膜物、低成本竹炭(BC)作功能助剂,通过BC改性及优化配方制备了WPU/BC高性能抗静电涂膜,研究了BC改性剂种类、用量,BC用量、粒度及分散时间等因素对该功能涂膜电性能的影响。结果表明,硅烷偶联剂γ-APTES是效果最好的BC改性剂,γ-APTES改性的WPU/BC功能涂膜的适宜制备工艺条件为:γ-APTES用量为BC的2%,25μm BC的用量为20份,分散40 min,此条件下制备的涂膜体积电阻率为1.7×104Ω.cm,铅笔硬度为4 H,冲击强度为72 kg.cm,耐洗刷性为11350次

Application of 5S management method on the materials science & engineering experimental teaching and personnel training

将5S管理方法引入材料科学与工程实验室建设与实验教学管理中。通过建立5S推行组织、确定试运行实验室的方法学习5S管理模式,以点带面,建立逐步在整个实验教学中心、在学生培养中推行5S管理的方法。The 5S management method is introduced into material science and engineering laboratory construction and experimental teaching management.By establishing an implementation organization, determining the test run laboratory, the 5S management mode is studied.And then fan out from point to area, it's gradually set up in the whole experiment center.It's also implemented during the personal training of the students in the university.教育部“十二五”国家级实验教学示范中心:厦门大学材料科学与工程专业实验教学示范中心(教高厅函[2012]13号); 教育部卓越工程师教育培养计划:厦门大学材料科学工程(教高厅函[2013]38号); 教育部第二批高等学校特色专业建设点:材料科学与工程(教高函[2007]31号); 福建省本科高校专业综合改革试点:材料科学与工程专业(闽教高[2012]41号

Development of a quantitative ELISA detection method for Coxsackievirus A group 16 strain(CA16) antigen

目的:建立柯萨奇病毒A组16型(CA16)抗原的双抗体夹心ElISA定量检测方法,用于CA16灭活疫苗的研发和生产过程的抗原定量检测。方法:以CA16中和单抗T26H12为包被抗体、nA14b9为标酶抗体,构建定量检测CA16抗原的双抗体夹心ElISA方法,并对方法的特异性、灵敏度、精密度、准确性、线性和稳定性进行分析。结果:建立了双抗体夹心定量检测CA16抗原的ElISA方法。方法的线性相关系数r2=0.998,线性范围为8~128 ng/Ml,定量限度为8 ng/Ml;变异系数CV80%;与CA16以外的其他样本没有交叉反应。结论:构建的CA16抗原ElISA定量检测方法的各项性能符合定量检测需要,可用于CA16疫苗的研发和生产过程的抗原活性的定量检测。Objective:To develop an a quantitative enzyme linked immunosorbent assay(Q-ELISA) to determine the concentration of Coxsackievirus A Group 16 Strain(CA16) antigen.This method was used to determine CA16 antigen content at each stage of CA16 vaccine developing and manufacturing process.Methods:A double antibody sandwich Q-ELISA was developed to determine concentration of CA16 antigen,which was based on the high-affinity neutralizing monoclonal antibodies T26H12 as capture antibodies,and NA14B9 as HRP-labeled antibody.The performance of reagent were evaluated.Results:The Q-ELISA for CA16 antigen content was successfully developed.The reagent had good performance.The quantitation scope was 8-128 ng/ml,the coefficient correlation was 0.998,the limit of detection was 8 ng/ml,the recovery was between 87% and 113.8%.The stability was up to 80% after reagent was heated for 6 days at 37℃.The variation coefficient was lower than 15%,and thereagent was no reaction with other sample except CA16 antigen.Conclusion:The Q-ELISA for CA16 antigen was developed with good specificity,accuracy,precision and stability.The method can be used to determine CA16 antigen content during development and production of CA16 vaccine

黄连素对精神分裂症患者血脂水平影响的Meta分析

目的系统评价黄连素对精神分裂症患者血脂水平的影响,为精神分裂症患者血脂干预方案的选择提供参考。方法系统检索英文数据库(PubMed、PsycINFO、Embase、Cochrane Library)和中文数据库(中国期刊全..

Construction an Opening Materials Science and Engineering Experimental Platform for all Students in the University

厦门大学材料科学与工程实验教学中心是2012年教育部批准建设的国家级专业实验教学示范中心。该实验教学中心针对不同学科、不同层面的学生,开设面向本专业的A类专业实验课程、面向校内相关理工科专业的B类材料基础实验课程以及面向全校各专业的C类材料通识实验课程。通过分层次、分体系的实验课程设置,教学科研协同发展和校企联合培养的实验教学模式,以及智能化管理系统的建设,实现实验室对全校师生的开放,全面提高实验中心的辐射示范作用。Materials science and engineering experimental teaching center of Xiamen University is an national professional teaching demonstration center, which was approved to construct by the education Ministry in 2012. According to the knowledge background and different requirement of the students in the university the experimental teaching center offers three level experimental courses： Course A is for the students in material college, which contains many specialized materials experiments; Course B is for the students major in science and engineering in the university, which contains basic materials experimental courses; Course C is for all students in the university, which contains general study materials experimental courses. Through the three level course settings and relevant teaching methods, as well as a controlled, visualized and intelligent management system, the center orderly opening to the students comes true. It is benefit to improve the role of radiation and demonstration of the center

An efficacy and safety study on Dimu Ningshen Koufuye which was used to treat children with attention deficit hyperactivity disorder

第一部分地牡宁神口服液治疗儿童ADHD有效性研究 目的 研究地牡宁神口服液治疗儿童注意缺陷多动障碍(attentiondeficit/hyperactivitydisorder，ADHD)的临床疗效，为证实中医药治疗ADHD有效性提供临床依据。 方法 1.所纳入的研究对象既符合《精神障碍诊断和统计手册》第四版(DiagnosticandStatisticalManualofMentalDisorders，FourthEdition，DSM-IV)中儿童ADHD诊断，又符合中医辨证属于阴虚阳亢证诊断，年龄为3~16岁，共计182例。分两个3~5、6~14年龄层，3~5岁年龄层采用自身前后...Part 1 An efficacy study on Dimu Ningshen Koufuye which was used to treat ADHD AIM Research to Dimu Ningshen Koufuye for the treatment of attention deficit hyperactivity disorder in children, Looking for traditional Chinese medicine treatment of evidence of the effectiveness of ADHD children. METHODS 1.The research object not only conforms to the fourth edition of the diagnostic and statistic...学位：医学硕士院系专业：医学院_精神病与精神卫生学学号：2452013115348

滚滑运动导致的滚动轴承磨损特性研究

滚滑运动是导致滚动轴承失效的一种特殊运动形式，采用仿真和试验相结合的方法，研究了滚动轴承在滚滑运动下的磨损特性。首先，应用Abaqus有限元软件建立滚滑状态下的滚动轴承有限元仿真模型，得到轴承的摩擦力动态响应。之后，通过滚滑磨损试验台得到轴承运动过程中的摩擦力数据，运用灰色关联分析法得知仿真数据与试验数据的关联度达到0.8以上，因此，仿真所得的摩擦力可作为判断轴承磨损状态变化的依据。在轴承磨损试验中，对润滑油进行颗粒度检测并观察记录了轴承内圈的表面形貌。结果表明，仿真所得摩擦力变化影响油液颗粒度、表面形貌的变化，油液中所含颗粒数目上升与内圈表面产生磨痕作为内圈所受摩擦力变化导致的磨损结果，正反馈于摩擦力，使其幅值不断增大，进一步加剧了轴承的磨损。仿真与试验相结合的方法为准确判断滚滑状态下轴承各点位置磨损特性提供了分析研究的基础

电阻率法研究减水剂与水泥的作用

測定了摻β-萘磺酸甲醛聚合物減水劑(β-naphthalene sulfonate-formaldehyde condensate superplasticizer,FDN)和木質素磺酸鈣減水劑(lignosulphonate superplasticizer,LS)水泥漿體的電阻率和流動度,以其第5min的電阻率為初始電阻率,并測定了其凝結時間。研究發現:FDN和LS對漿體電阻率影響不同,可用減水劑的吸附、溶解機理來解釋漿體初始電阻率隨FDN和LS摻量的變化。摻FDN水泥漿體的初始電阻率–摻量曲線可分為4個區:選擇吸附區、有效吸附區、溶解電離區、電離飽和區,各區很好地反映了FDN的吸附與溶解特性。研究還發現摻LS漿體的最大初始電阻率與最大流動度對應的LS摻量相同,因此,電阻率法有望用于測定LS的最佳摻量。 Electrical behavior of cement pastes with β-naphthalene sulfonate-formaldehyde condensate superplasticizer (FDN) and lignosulphonate superplasticizer (LS) as well as their relation to the fluidity of the pastes were investigated. The setting time tests of the pastes were also carried out. The resistivity at 5 min is regarded as initial resistivity. Results show that the FDN and the LS have different effects on the resistivity of cement pastes. The initial resistivity of the pastes changing with the amount of superplasticizer can be explained by the adsorption and the dissolution of superplasticizer. The curve of initial resistivity as a function of FDN dosage can be divided into 4 zones, which are the selective adsorption zone, the effective adsorption zone, the dissolution and ionization zone, and the saturated ionization zone, respectively. Each zone reflects the properties of FDN as a superplasticizer of cement paste. The LS dosage of the paste with the highest fluidity is the same as that of the highest initial resistivity. Electrical resistivity method will potentially be used to test the optimal dosage of LS