新型干法腈纶废水组合处理工艺研究

针对干法腈纶废水所存在的可生化性差、含较多生物难降解物质等进行了一系列研究,提出了新的组合处理工艺,即铁碳内电解—混凝沉淀—水解酸化反应—生物流化床反应—硝化反应组合工艺.结果表明,该处理工艺对干法腈纶废水有较好的处理效果,处理后废水能迭标排放.     

有机-无机杂化材料的应用研究进展

作为新型的功能材料,有机-无机杂化材料的研究方兴未艾,在各应用领域已显示了强大的功能优势.综述了21世纪以来,有机-无机杂化材料在光学材料、电学材料、涂层材料、催化材料、磁性材料、生物材料等方面的研究进展,同时结合该课题组在气体传感器方面的研究工作,着重讨论了有机无机杂化材料在气体传感器方面的研究情况,并指出在这一研究...     

矾土中钾、钠、硅、铁、钙、镁、钛的ICP-AES测定

以碳酸锂-四硼酸锂为熔剂,铝矾土试样经高频融样机高温熔融。熔融物在PTFE烧杯中,用稀盐酸加热溶解。样品溶液使用电感耦合等离子体原子发射光谱仪测定,结果准确度高、重复性好。     

整车道路模拟试验控制技术

结合CIMC整车试验室建设,重点介绍整车道路模拟试验系统控制系统构成、控制技术、工作原理及应用。     

新型核-壳改性剂N-AIM对PMMA性能的影响

通过乳液聚合方法制备了不同橡胶粒径和橡胶相组成比的新型核-壳丙烯酸酯类抗冲改性剂（N-AIM）,将其与聚甲基丙烯酸甲酯（PMMA）进行熔融共混,得到了PMMA/N-AIM共混物。对PMMA/N-AIM共混物的形态结构、冲击性能和光学性能分别进行了考察。通过透射电镜（TEM）分析表明,橡胶粒径为100 nm时改性剂在基体中发生聚集,大于100 nm时均可均匀分散在基体中;冲击测试结果表明,随着N-AIM橡胶粒径的增加,共混物的冲击强度先增大后减小;光学测试表明橡胶组成比影响共混物的光学性能。     

Deodorization optimization of Camelina sativa oil: Oxidative and sensory studies

Camelina sativa oil (CO) is characterized by a high content (up to 40 wt %) of essential α‐linolenic acid and characteristic odour and flavour. Deodorization of highly unsaturated oils requires great attention as the refining process involves thermal treatment which affects oil integrity. In the present study RSM and principal component analysis (PCA) were used to optimize bench‐scale deodorization of CO. Mathematical models were generated through multiple regressions with backward elimination, describing the effects of process parameters (temperature, steam flow, time) on oil quality indicators [peroxide value (PV), p‐anisidine value (p‐AV), γ‐tocopherol (γ‐T) and oxidative stability (OS)]. Additionally, sensory evaluation was performed. RSM analysis showed a significant effect of deodorization temperature and to a lesser extent, deodorization steam flow and time on removal of oxidative compounds, flavour and odour. PCA of chemical and sensory results showed that deodorization temperature affected the sensory properties in the samples. The best conditions for removing undesirable flavour and odour were achieved by using a deodorization temperature of 195–210°C.     

Aggregation‐Enhanced Emission of Fluorescent‐Gemini Surfactants with High Photostability for Cell‐Membrane Imaging

In situ studies of the aggregation behavior of traditional surfactants at the liquid interface using spectroscopic methods are often significantly affected by the large volume of fluorescent groups, such as pyrene. Fluorescent‐Gemini surfactants provide an ideal solution since the fluorescent block can be designed as a spacer or a tail. In this work, we report the synthesis of a new fluorescent‐Gemini surfactant with a rigid spacer (referred to as 8‐TBT‐8). The aggregation behavior and application in cell‐membrane imaging were investigated. The unique aggregation behavior in an organic solvent and aqueous solution was studied using spectroscopy. UV–vis and photoluminescence spectra of 8‐TBT‐8 revealed that this new fluorescent surfactant forms H aggregates in organic solution to give blue emission, whereas it forms J aggregates in aqueous solution to give green fluorescence under UV light. In addition, the fluorescence intensity of 8‐TBT‐8 increases abruptly at concentrations higher than the critical micellization concentration. Good photostability and a unique structure make the synthesized Gemini surfactant very suitable for membrane imaging.     

海上水驱开发油田液油联合规划方法

针对中国近海水驱开发油田未对产液量进行合理规划的现状,考虑海上水驱开发油田自身产液能力以及生产设施液处理能力,设定了全过程定油、高峰限液、全过程定液三种规划情景,并结合水驱曲线与递减曲线联解,提出了海上水驱开发油田液油联合规划方法。该方法可对海上油田产液量进行规划,也可评估工程设施对油田产量的限制以及限液条件下油田开发潜力,为提高规划方案的编制水平,保证规划方案的顺利实施提供保障。     

混联电网背景下一起交流母线故障分析

在特高压交直流混联电网背景下,特高压交流元件故障的影响范围扩大、故障性质升级,对特高压交直流混联电网运行与控制提出了更高的要求.文章根据一起典型的交流母线故障的保护动作情况,结合故障定位与诊断,分析了交直流混联电网下母线故障对线路输出功率和直流换相的影响.     

六方相/单斜相WO3“异相结”的可控合成及光催化性能

利用沉淀法合成了球形六方相氧化钨(h?WO₃),通过调控六方相向单斜相的相变,可控制备了六方/单斜WO₃(h/m?WO₃)“异相结”催化剂。采用X射线衍射(XRD)、扫描电镜(SEM)和比表面积(BET)等对WO₃催化剂的晶相结构及组成、粒子大小和比表面积进行了表征。光催化分解水产氧的实验结果表明,相较于纯六方相WO₃,具有合适晶相组成的h/m?WO₃展现了显著的光催化性能。结合六方相和单斜相的能带位置,表面光电压表征结果发现,h/m?WO₃“异相结”的形成显著促进了催化剂表面光生电子和空穴的高效分离,进而提高了催化剂的光催化活性。