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81.
本文主要研究用无油真空系统作为排气方法在荧光显示管生产中的作用.  相似文献   
82.
通过化学修饰合成了噻虫嗪(thiamethoxam,TMX)人工半抗原,采用碳二亚胺法(EDC)将该抗原与牛血清蛋白和卵清蛋白偶联成功制备了分子结合比合理的免疫抗原(TMX-BSA)和包被抗原(TMX-OVA).对经TMX-BSA免疫的6周龄Balb/c实验鼠的免疫抗血清进行了间接ELISA和阻断ELISA,初步明确了抗噻虫嗪多克隆抗体(TMX-pAb)的免疫学特性,为噻虫嗪残留免疫学快速检测技术开发和检测产品研制奠定了坚实基础.  相似文献   
83.
Difficulties in teaching a multi-disciplinary subject such as the mechatronics system design module in Departments of Mechatronics Engineering at Temasek Polytechnic arise from the gap in experience and skill among staff and students who have different backgrounds in mechanical, computer and electrical engineering within the Mechatronics Department. The departments piloted a new vertical stream curricula model (VSCAM) to enhance student learning in mechatronics system design through integration of educational activities from the first to the second year of the course. In this case study, a problem-based learning (PBL) method on an autonomous vacuum robot in the mechatronics systems design module was proposed to allow the students to have hands-on experience in the mechatronics system design. The proposed works included in PBL consist of seminar sessions, weekly works and project presentation to provide holistic assessment on teamwork and individual contributions. At the end of VSCAM, an integrative evaluation was conducted using confidence logs, attitude surveys and questionnaires. It was found that the activities were quite appreciated by the participating staff and students. Hence, PBL has served as an effective pedagogical framework for teaching multidisciplinary subjects in mechatronics engineering education if adequate guidance and support are given to staff and students.  相似文献   
84.
随着农村外出务工人员的逐年增加,留守学生逐渐增多,他们远离了父母的关爱照料,造成了留守学生情感上的真空状态。为了让留守学生有一个健康的心理,养成良好的生活与学习习惯,填补留守学生的情感真空,提出五方面的对策以供参考:真心关爱,“高看一眼”;摸底调查,建立档案;加强沟通,倾注真爱;密切联系,协同施教;组织班会,建立帮扶机制。  相似文献   
85.
Vacuum pyrolysis was employed to dispose scrap brominated epoxy printed circuit boards (PCBs). Pyrolysis characteristics of waste PCBs under normal pressure and vacuum were investigated in this paper. A detailed study on the analysis of the elemental composition of PCBs and the pyrolysis products was performed. The thermal decomposition kinetics was measured by a thermogravimetric (TG) analyzer. The activation energy of pyrolysis under nitrogen atmosphere and vacuum were 193 kJ/mol to 206 kJ/mol and 145 kJ/mol to 165 kJ/mol, respectively. The composition of materials was analyzed by elemental analyzer. The pyrolysis products were analyzed by GC (gas chromatograph), GC-MS (chromatography and mass spectrometry) and FT-IR (Fourier transform infrared spectroscopy). Vacuum helped to increase the yield of pyrolysis oil. The liquid yield of PCBs pyrolysis at 15 kPa and normal pressure were 31.3? and 23.5?, respectively. The main components in pyrolysis oils were phenol, isopropyl-phenol, and their brominated substitution.  相似文献   
86.
We construct photon-subtracted (-added) thermo vacuum state by normalizing them. As their application we derive some new generating function formulas of Jacobi polynomials, which may be applied to study other problems in quantum mechanics. This will also stimulate the research of mathematical physics in the future.  相似文献   
87.
本文概括了政府主导型秸秆全面禁烧模式的发展历程。以安徽省2014年午季全面禁烧为例,针对政府主导型秸秆全面禁烧的主要做法、效果评价及存在问题进行分析,并提出完善和优化秸秆禁烧的对策建议。  相似文献   
88.
以椰肉为原料制作转化糖椰肉果脯,对影响产品品质的关健工艺如渗糖量、渗糖时间等作进一步探讨.结果表明:果胚在真空杀菌后,0.5%CaCl_2+1%NaCl溶液下硬化2.5 h,95℃下热烫3 min;采用真空渗糖法,渗糖后进行鼓风干燥,可得到外观、口感、品质都较好的转化糖椰肉果脯.  相似文献   
89.
利用共生纠缠度研究了初始处于Bell态的两个全同二能级原子分别与单模真空场相互作用系统中原子的纠缠演化,讨论了原子的纠缠演化特性.研究结果表明:两原子间纠缠呈现出周期性演化规律.  相似文献   
90.
罗祥海 《大众科技》2012,(1):107-108
应用真空炉在除铅、铋的同时将大部分锑除去,可大幅度减少巨毒物料铝渣的产出,并大幅度提高锡精炼的直收率。  相似文献   
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