Nitrogen incorporated diamond-like carbon films by microwave surface wave plasma CVD

Nitrogen incorporated diamond like carbon films have been deposited by microwave surface wave plasma chemical vapor deposition (MW-SWP-CVD), using methane (CH₄) as the source of carbon and with different nitrogen flow rates (N₂ / CH₄ flow ratios between 0 and 3). The influence of the nitrogen incorporation on the optical, structural properties and surface morphology of the carbon films were investigated using different spectroscopic techniques. The nitrogen has been incorporated into DLC:N films which was confirmed by the X-ray photoelectron spectroscopy (XPS) measurement. Moreover, the nitrogen incorporation was accompanied by a variation in the optical gap, which was attributed to the removal or creation of band tail states.     

A novel high-performance counter electrode for dye-sensitized solar cells

A novel Pt counter electrode for dye-sensitized solar cells (DSC) was prepared by thermal decomposition of H₂PtCl₆ on NiP-plated glass substrate. The charge-transfer kinetic properties of the platinized NiP-plated glass electrode (Pt/NiP electrode) for triiodide reduction were studied by electrochemical impedance spectroscopy. Pt/NiP electrode has the advantage over the platinized FTO conducting glass electrode (Pt/FTO electrode) in increasing the light reflectance and reducing the sheet resistance leading to improve the light harvest efficiency and the fill factor of the dye-sensitized solar cells effectively. The photon-to-current efficiency and the overall conversion efficiency of DSC using Pt/NiP counter electrode is increased by 20% and 33%, respectively, compared to that of using Pt/FTO counter electrode. Examination of the anodic dissolution and the long-term test on the variation of charge-transfer resistance indicates the good stability of the Pt/NiP electrode in the electrolyte containing iodide/triiodide.     

现代乘用车钢制车轮涂装技术

从现代车轮涂装技术标准入手,描述了车轮电泳涂料,面漆涂料的选择方法,前处理、阴极电泳以及面漆喷涂各工序的实施要点,并分析了涂装车间的热能设计和管理。     

Metal chelates as synergistic flame retardants for flexible PVC

The thermal degradation of flexible PVC treated with various metal chelates containing Cr, Al, Fe, Co, Ni, Cu, or Zn combined with two compounds, Al(OH)₃ and Mg(OH)₂, was studied by thermal analysis. Limiting Oxygen Index (LOI), Smoke Density Rating (SDR), and mechanical properties were investigated. The structure of the char formed after combustion of the PVC compounds was observed through scanning electron microscopy (SEM). The high LOI and char yield of flexible PVC treated with flame retardants showed that there was a good synergistic effect between Al(OH)₃, Mg(OH)₂, and metal chelates. J. VINYL. ADDIT. TECHNOL., 11:70–75, 2005. © 2005 Society of Plastics Engineers.     

矩阵Moore—Penrose逆中子矩阵秩的计算公式

首先引入了M⁺中子矩阵E₁,E₂,E₃和E₄秩的一组计算公式,并给出了它们在各种常见条件下的简化形式,又推出了M⁺中子矩阵的秩所满足的若干不等式;最后给出了复矩阵N=A+iB的Moore-Penrose逆N⁺=C+iD中C,D秩的计算公式及若干不等式。     

化材专业选修课《特种陶瓷》融入课程思政元素的探索

"课程思政"是新时代背景下高校教育教学改革的方向,也是实现立德树人教育目标的重要举措。本文基于专业选修课《特种陶瓷》的课程特点,分析了课程在融入思政元素时存在的问题,从教师素质提升、课程内容建设、教学资料更新、授课方式创新、考核形式改革等五个方面提出了该课程实施思政改革的具体举措,帮助学生坚定理想信念,提高道德修养,培养正确的价值观念,体现"三全"育人的"大思政"教育格局。     

N-苄基吲哚类熊果酸衍生物的合成及抗肝癌活性

为开发高效低毒的抗肝癌天然产物衍生物,依据药物拼合原理设计并合成了一系列未见文献报道的熊果酸衍生物.将熊果酸与不同取代的N-苄基吲哚片段通过Claisen-Schmidt缩合反应得到目标化合物,其化学结构均经过核磁氢谱、核磁碳谱以及质谱的联合确证.采用噻唑蓝(MTT)法考察其体外抗肝癌活性,结果表明,2-{[1-(2-...     

蒙脱土改性剂结构对PBS复合材料性能的影响

为改善聚丁二酸丁二酯(PBS)的性能,分别以三苯基羟乙基溴化膦改性的蒙脱土(OMMT1)、十六烷基三苯基溴化膦改性的蒙脱土(OMMT2)为添加相制备了PBS复合材料,着重考察了改性剂结构对PBS复合材料性能的影响.微观结构表明,OMMT2较OMMT1在PBS基体中分布分散均匀.差示扫描量热(DSC)仪测试结果表明,PB...     

新时代背景下有机化学课程的思政教学研究与探索

基于立德树人根本目标,聚焦专业育人本质,以有机化学课程为例,通过对高校课程思政现状分析,结合时代特点,探讨专业思政与课程融合的具体思路和实现路径,提升教师全面育人能力的方式与方法,同时确立以专业为依托、“两团队”+“三一体”共同引领、课程协同实施为特色的“课程思政”教育教学改革新模式。力求使课程思政无论在教学内容还是教学方法上都有新的突破,有力促进全员、全程、全方位育人目标的实现。