不锈钢转化器在中小型硫酸装置上的应用前景

分析了传统碳钢转化器存在的缺点。相对于碳钢转化器，不锈钢转化器具有结构简单、安装方便、耐高温、不易漏气、维护工作量小等优点。通过碳钢转化器和不锈钢转化器结构和造价的比较，表明不锈钢转化器在中小型硫酸装置中也有良好的应用前景。     

煤粉密度对燃煤过程中颗粒物形成特性的影响[

通过浮选实验先将典型烟煤分成高、中、低3个密度段，然后对3种不同密度原煤在沉降炉内进行热解和燃烧实验，研究原煤密度对颗粒物形成机理和特性的影响。实验采用低压撞击器（LPI）把颗粒物按不同粒径大小从0.03～10.0 μm共分13级，分别采集燃烧后的可吸入颗粒物。实验结果显示：低密度原煤对颗粒物形成的贡献最大，中密度次之，高密度最小，低密度原煤所含矿物质粒度最小，形成的焦的膨胀率、总孔体积和BET表面积最大，高密度原煤所含矿物质粒度最大，形成的焦的膨胀率、总孔体积和BET表面积最小，中密度原煤介于两者之间，3种密度原煤燃烧后形成的PM10颗粒物元素构成的相同点是：对于亚微米颗粒物，元素S＋碱金属元素＋其他元素>难熔元素，对于超微米颗粒物，难熔元素占80%以上，远远大于其他三类元素。     

重组水蛭素生物学活性检测参考品的制备和标定

目的制备重组水蛭素(Hirudin)生物学活性检测参考品,并标定其生物学活性。方法按照WHO相关规定制备、分装和冻干参考品,经全面检测合格,用TH生色底物法进行体外生物学活性检测。结果外观、无菌试验合格,水分含量为0.8%。经过10次标定,平均生物学活性为12 701 ATU/支,标准差为2 226 ATU/支,变异系数为17.5%。在-20℃、4℃和25℃条件下,生物学活性可以稳定保持9个月。结论该批重组水蛭素各项指标均符合要求,性质稳定,可作为国家参考品,用于重组水蛭素的生物学活性检测。     

基于SOAP的企业异构信息系统集成

阐述了SOAP通信协议的构成和实现机制以及与相似协议的比较。基于它的跨平台的能力,将其运用于企业的分布式环境中,实现了异构信息系统间的互操作和跨部门的数据处理,提高企业数据处理的效能,同时为企业异构信息系统集成提供了新的方法。     

两段法处理高浓度含砷废水的工艺研究

通过正交试验研究了用石灰、有机捕集沉淀剂(DTCR)两段法处理高浓度含砷废水的工艺条件，并与常规法比较了处理效果和处理费用。结果表明：用两段法处理后的废水可达标排放；污泥量大大减少，易脱水，含水率低，降低了后处理的难度和费用；污泥稳定，不产生二次污染。该法具有显著的社会效益和生态效益。     

烧结工艺对硼泥玻璃陶瓷显微结构和性能的影响

以硼泥为主要原料对制备玻璃陶瓷工艺进行研究,实验中发现烧结温度和烧结时间对析晶相的成分影响较小,但玻璃陶瓷的表面形貌影响较大;当烧结温度高于析晶温度时,对晶体尺寸影响更大;根据不同烧结温度和烧结时间对玻璃陶瓷结构影响,找出适合的最佳烧结温度和烧结时间,其值为781℃,时间为4h。     

Detecting and tracking dim small targets in infrared image sequences under complex backgrounds

This paper presents a unified framework for automatically detecting and tracking dim small targets in infrared (IR) image sequence under complex backgrounds. Firstly, the variance weighted information entropy (variance WIE) followed by a region growing technique is introduced to segment the candidate targets in a single-frame IR image after background suppression. Then the pipeline filter is used to verify the real targets. The position and the size of the detected target are then obtained to initialize the tracking algorithm. Secondly, we adopt an improved local binary pattern (LBP) scheme to represent the target texture feature and propose a joint gray-texture histogram method for a more distinctive and effective target representation. Finally, target tracking is accomplished by using the mean shift algorithm. Experimental results indicate that the proposed method can effectively detect the dim small targets under complex backgrounds and has better tracking performance compared with the gray histogram based tracking methods such as the mean shift and the particle filtering.     

低蛋白天然胶乳的研究现状

简述了低蛋白天然胶乳的发展、制备方法、热降解性能和应用，并对低蛋白胶乳中蛋白质含量的检测方法和低蛋白硫化胶乳胶膜的力学性能作了简要的阐述。     

Thermooxidative degradation of natural rubber/clay composite

The clay is treated with a reducing agent and an acid so as to obtain a clay containing various metal components with a variable‐valence state. Then, the clay is coprecipitated with natural rubber (NR) latex to prepare a vulcanized NR/clay composite. The degradation process of the NR/clay composite under hot air condition was studied dynamically by using a Fourier transform infrared spectrometer attaching an in situ sample cell and was also investigated using the TGA method. The test result obtained from the infrared spectrometry indicated that under low decomposition temperature, the decomposition products of the test samples mainly are ethylene, low molecular olefinic hydrocarbon, and carbonyl compounds. As the decomposition temperature rises, the low molecular olefinic hydrocarbon content decreases, the olefine with longer chain is formed, and a lot of alkane decomposition products are formed at the same time. When the content of the metal components with a variable‐valence state in clay such as Cu, Mn, Co, and Fe increases, the oxidation products containing the carbonyl group, the olefinic hydrocarbon, and CO₂ in the decomposition product of the test sample also increase. The TGA result clearly shows a shoulder peak that appears by the side of the main peak on the DTG curve of NR/clay composite. With the increase in the content of metal components with variable‐valence state in clay, the initial degradation temperature of the test sample (T₀), the degradation peak temperature (T_p1), and the final degradation temperature (T_f1) in first‐stage reaction, as well as the degradation peak temperature (T_p2) and the last final degradation temperature (T_f) in second‐stage reaction of all the test samples more or less shift to the direction of low temperature; besides, the activation energy (E) of the reaction of the test samples more or less decreases. This means that the metal components with variable‐valence state promote the oxidative degradation of the clay–rubber masterbatch. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3809–3815, 2006