Nanoscale Hybrid Langmuir－Blodgett Films Based on Cerium－Substituted Heteropolymolybdate and Polyquinoline

Nanoscale hybrid organic/inorganic Langmuir-Blodgett films of cerium-substituted heteropolymolybdates (CeHPMo) and π-conjugated macromolecule poly(1,2-dihydro-2,2,4-trimethyl) quinoline (PQ) were obtained with auxiliary film-forming material stearic acid(SA) or octadecylamine(ODA). The surface pressure-area isotherms illuminate the formation of the hybrid LB films of PQ/ODA/Ce-HPMo and PQ/SA/Ce-HPMo. The different film-forming mechanism was discussed when the different auxiliary film-forming materials were used in the system. The absorption spectra indicate that the molecules of PQ and Ce-HPMo are incorporated into the LB films. Tapping-mode AFM image reveals a granular surface texture of nanosized Ce-substituted heteropolymolybdate. STM image shows that the conductivity is greatly improved after Ce-substituted heteropolymolybdates are incorporated in the films.     

Triboluminescence of A New Europate Complex

A new europium (Ⅲ)complex Eu(HFNH)3Phen (HFNH: 4, 4, 5, 5, 6, 6, 6-heptafluoro-l-(2-naphthyl)hexane-1,3-dione ; phen : 1, 10-phenanthroline) was synthesized and its tribolumineseent phenomenon was observed. Photoluminescence and tfiboluminescence spectra were successfidly determined. The most intense tfiboluminescent emission originates from the transition of the central Eu^3 ion from ^5D0 level to ^7F2 level. The tribolunlinescent spectrum is basically similar to that of photoluminescence, which correlates with the disorders of F atoms.     

南海鸢乌贼营养成分分析与评价

采用现代生化分析法对南海鸢乌贼(Ryukyu squid)的营养成分进行分析与评价。结果表明:鸢乌贼胴体中水分、粗脂肪、粗蛋白和灰分分别为80.50%、0.49%、17.24%、1.37%。头足中水分、脂肪、蛋白和灰分分别为80.73%、0.87%、16.68%、2.88%,是一种高蛋白低脂肪水产品。鸢乌贼中氨基酸含量丰富,占鲜样总量的14.05%(胴体)、15.10%(头足),其中必需氨基酸(EAA)占氨基酸总量的40.89%(胴体)、40.11%(头足),鲜味氨基酸占45.89%(胴体)、46.51%(头足),必需氨基酸指数为79.56(胴体)、75.46(头足),其必需氨基酸的构成比例符合FAO/WHO标准。南海鸢乌贼中不饱和脂肪酸含量较高,占脂肪酸总量的49.90%(胴体)、54.55%(头足),其中EPA与DHA质量分数分别为6.9%(胴体)、5.67%(头足)和15.26%(胴体)、22.08%(头足),以上结果表明南海鸢乌贼有较高的营养价值和保健作用,具有较好的开发前景。     

一种用于骨折术后辅助康复训练监控系统的设计

针对骨折术后的病人在做康复训练时,医生无法监控病人训练等情况,介绍了一种用于骨折术后辅助康复训练监控系统。该系统以stm32单片机为核心,采用MPU6050传感器采集病人手臂屈伸的次数,通过ESP8266 wifi模块将数据传送到云服务器,通过HC06蓝牙模块发送到病人的手机app.医生可以通过手机app访问云服务器,查看病人训练情况和设置病人训练计划。作为骨折术后或久卧的病人(防止肌肉萎缩)康复训练的辅助产品,有一定的应用前景。     

芹菜叶中黄酮类化合物的提取与测定

文章以芹菜为研究对象,就其中总黄酮的提取分离和测定工艺进行了探讨。实验考察了单因素（提取溶剂浓度、物料比、回流提取时间和pH等）对总黄酮提取效果的影响,并在此基础上确定正交试验,得到了芹菜中总黄酮提取的最佳工艺条件∶40%（v/v）乙醇溶液,物料比（g/mL）1∶20,回流提取时间60 min,pH为6。得到总黄酮的含量为0.0794%。通过精密度实验和稳定性实验对测定方法进行评价。     

Study on stress and deformation of keyhole gas tungsten arc-welded joints

Keyhole gas tungsten arc welding(K-TIG)of Q345 low alloy steel plates was simulated by using SYSWELD software.The temperature field of the K-TIG welding process was simulated with three different combined heat sources and was compared with the weld profile that was obtained experimentally.The temperature field that was obtained by a combination of a double ellipsoid heat source on the upper half and a three-dimensional Gauss heat source on the lower half was similar to the real situation.The effects of plate thickness,gap and welding speed on the deformation and stress of the K-TIG welded joints were investigated by K-TIG welding numerical simulation.A reduction in the thickness of the weld plates reduced the z-direction deformation and transverse residual stress;an appropriate gap reduced the residual stress and an increase in the welding speed reduced deformation after welding,but did not help to control the residual stress after welding.     

突发性水污染事故有机废水处理技术研究进展——以松花江硝基苯污染为例

重大突发性水污染事故的危害不仅造成人民生活质量下降,而且带来巨大的经济损失.常规突发性水污染事故的处理技术包括人工、物理、化学、生物等方法.通过对2005年松花江硝基苯污染事故的研究,发现污染物在水体、冰层、底泥中均有分布,对环境中的水生动植物产生一定影响,并且污染了地下水;采用活性炭吸附技术取得了很好的处理效果.今后应加强对特定污染物的污染特性、应急处理及污染修复技术的研究;在新建和改建污水处理厂时,应考虑特定污染源的应急处理,做好事故发生前的应急准备工作.     

天然气蒸汽转化制氢装置转化工序火灾爆炸原因分析

一、转化工序工艺概述 经过原料气压缩机增压的工艺天然气经过预热、脱硫，与经过过热中压蒸汽按H2O：C=3．5～4．0：1混合，进入对流段混合气预热器加热，经过上集气总管、猪尾管分别进入60根装有镍触媒的转化管中，天然气与水蒸气自上而下经镍触媒床层进行转化反应，最后经下集气管、下集气总管出转化炉。     

火炬自动点火控制系统实现瓦斯回收利用

介绍火炬自动点火控制系统的构成和工作过程;详述控制部分、信号采集部分、信号输出与执行部分的工作原理,实现火炬自动点火的过程.