化学纤维含油率的测试方法探析

化学纤维的含油率测试是生产过程中质控的一项较为重要的考核指标,包含10种以上方法。针对其方法的多样性,作为抽查的仲裁机构,需对每种试验方法进行分析,并针对所有方法,筛选出适合检测机构仲裁的试验方法。结合标准GB/T 6504—2008中试验方法的规定和检测机构的普遍情况,分析了每种方法的原理、操作方法以及优缺点,得出最适合的仲裁方法为标准萃取法。     

测井数据采集中滤波方法及相关参数的选择

测井数据的滤波处理对数据获取的准确性和可用性具有十分重要的意义。在分析油田测井数据常用滤波方法的基础上,从自然伽马曲线滤波方法、井径曲线滤波方法、声波时差滤波方法等方面分别对滤波方法选择进行确定。并据此对其对应的滤波长度参数进行选取,通过有效方法选择最佳的滤波方法和相关参数。研究结果表明滤波方法和相关参数的正确选择对提高测井数据资料的实用性具有促进作用。     

二苯醚类系列化合物

二苯醚类化合物的化学合成方法；制备二苯醚化合物的方法；制备颗粒状十溴二苯乙烷或十溴二苯醚的方法；4，4’-二氨基二苯醚的制备方法；二苯醚羧酸酯类除草剂的合成方法；二苯醚化合物的提纯方法；二苯醚化合物的硝化方法；4，4’-双（间氨基苯甲酰基）二苯醚的制备方法；苯并咪唑盐的制备工艺；     

化学检测实验室的方法验证与确认

按照化学检测实验室使用不同性质的方法,研究了规范方法的验证以及非规范方法确证的范畴、差别以及方法验证和方法确定的流程,研究了方法验证以及方法确认的每个工艺参数的检测标准以及结果评价标准。     

纤维增强塑料寿命评估方法

本文综述了纤维增强塑料的寿命评估方法,包括自然老化和人工加速老化的评估方法、耐腐蚀的评估方法、长期载荷的评估方法、交变载荷的评估方法、内外压管子的评估方法和无损检测的评估方法。     

PU专利

聚丁二烯基水性聚氨酯及其改性乳液的制备方法;一种聚氨酯人造革的制造方法;抗菌聚氨酯材料及其制备方法;低VOC含量聚氨酯泡沫的制备方法及用途;一种蓖麻油增韧聚乳酸型聚氨酯的制备方法。     

过程工业软测量中的多模型融合建模方法

对多模型融合建模方法在过程工业软测量中的研究进展进行了系统总结。根据整体模型中子模型的不同,多模型融合建模方法主要可分成数据驱动融合建模方法和半参数建模方法。详细介绍了数据驱动融合建模方法和半参数建模方法的设计思想和国内外研究现状,分析了各类方法的优缺点,并提出了相应的改进方向。根据过程数据处理方法的不同,将数据驱动融合建模方法分为集成学习和聚类分析。根据模型结构形式的不同,将半参数建模方法分为串联结构和并联结构。最后对多模型融合建模方法的未来研究方向进行了展望,期望今后的研究工作能在改进数据驱动模型融合技术、提高半参数模型外推能力和解决双率数据问题等方面取得突破性进展,并指出采用多模型融合建模方法建立基于多源信息融合的软测量模型是实现过程工业中难测变量在线估计的有效方法。     

第3选择：寻求“协同”

有一种方法能够解决我们所面临的最棘手甚至看似无法解决的问题，有一种方法能够解决生命中几乎所有的困境和严重分歧，它是通向未来的方法。艺既不是你的方法，也不是我的方法，它是一种更先进的方法，它是一种比我们以往能想到的任何方法都更好的方法。     

国内专利文献

苯甲腈的生产方法；1,1-环己烷二乙酸单酰胺的制备方法；非酯肟醚菊酯类化合物的提纯方法；氰酸酯类化合物及其制备方法；L-瓜氨酸-苹果酸的制备方法……     

化工过程系统集成建模的面向智能体方法

引　言化工过程系统中常用的建模方法是结构化分析方法和面向对象方法 .面向对象方法较好地克服了结构化方法按功能将系统分解的缺点 ,但对化工生产过程的故障诊断、模拟优化、排产等具有主动性的事物采用对象来描述具有一定的缺点[1] .因此 ,在面向对象方法的基础上提出了面向     

Füllstand- und Durchflußmessung in verfahrenstechnischen Anlagen

Measurement of Level and Flow in Processing Plants The author reviews the processes and systems for the measurement of level. The devices are described for indicating the states ?Full”? and ?Empty”? in the automatic charging and discharging, for continuous measurement in the monitoring of the stores and processes, for measuring systems based on specific properties, such as conductivity and capacity, for electromechanical systems, for non-contact measuring procedures based on sonic and ultrasonic echometry as well as radioactivity, for microwave systems, and for the measurement of aggressive products and substances under high pressures and temperatures, and, in explosion-proof plants. In the measurement of flow, inductive flowmeters of high precision and reliability are used for conducting liquids; corrosion-resistant turbines are used for all products with low viscosity; tooth wheel flowmeter are used for highly viscous materials. The processes for the measurement of level and flow are described in an example for the treatment of waste water.     

Determination of Several Valences of Iron, Arsenic and Antimony, and Selenium in Glass

Methods for the analysis of silicate glasses are described for ferrous iron, for tri- and pentavalent arsenic and antimony when present together, and for selenium as Se^2-, Se°, Se⁴⁺, and Se⁶⁺. Analytical results are presented for FeO in the range 0 to 0.25%; for total As and Sb as tri-oxide, 0.1 to 1.25%; and for total Se, 0.05 to 0.25%. Apparatus for the determination of FeO is described, and a comparison is made of analytical data for FeO versus light transmittance at 1000 and at 1050 mμ for the same glass.     

汽车工业用粘接材料的现状与展望

本文按照汽车制造工序介绍国外汽车工业折边用胶粘剂、点焊胶接用胶粘剂、车身密封胶、车身底涂料、窗玻璃用单组份湿气固化型聚氨酯胶粘剂以及纤维增强树脂用结构胶粘剂等主要胶种的最新技术发展动向。讨论了我国汽车工业用胶粘剂的现状和差距，提出几点建议。     

少烟三元乙丙橡胶材料研制

以三元乙丙橡胶(EPDM)为基体材料，三氧化二锑、十溴苯醚为阻燃剂制备了材料配方，试验了三氧化二锑(Sb22O3)、十溴苯醚(DBDPO))配比对材料烟雾和力学性能的影响，测试了材料的氧指数，可见光的透过率，自熄性等。结果表明，DBDPO与EPDM的相容性比较好，Sb2O3的相容性则相对比较差，两者都可以提高材料的阻燃性能。以4045EPDM橡胶为基体材料，当EPDM100g，白炭黑10g，二硫化四甲基秋兰姆(TMTD)2g，ZnO5g，促进剂M1g，硬脂酸2g，硫磺3g，Sb2O3和DBDPO质量比为20．0／40．0，可以获得具有较好力学性能的少烟EPDM橡胶材料。     

Mathematical Modeling and Simulation of Drying Using Two Industrial Concurrent and Countercurrent Rotary Dryers for Ammonium Nitrate

Drying of ammonium nitrate (AN) is accomplished in the Shiraz Petrochemical Complex (SPC) using a concurrent rotary dryer following a countercurrent rotary dryer. A mathematical model for these rotary dryers including heat and mass transfer was developed. The model was checked against industrial-scale data, which showed a good agreement. The average absolute deviation of the simulation results compared to the industrial data for the concurrent dryer was 4.0% for solids moisture, 1.3% for solids temperature, and 1.8% for air temperature and for the countercurrent dryer it was 9.0% for the solids moisture, 2.0% for solids temperature, and 4.6% for air temperature. These simulation results reveal that for outlet solid moisture, inlet AN moisture, and air temperature as well as the outlet temperature of product, the inlet solid and air temperature have major effects for both concurrent and countercurrent flow.     

国内甲醇消费市场状况

我国甲醇主要用于甲醛、对苯二甲酸二甲酯、农药、甲基叔丁基醚、醋酸的生产,我国甲醇消费量增长最快的领域将是燃料甲醇、醋酸和甲醛。预计 2005年甲醛对甲醇的需求量为 175万t左右,聚甲醛对甲醇的需求量为 40万t,醋酸需求甲醇为 62万t,甲基叔丁基醚为 46万t左右,甲胺为 30万t,碳酸二甲酯为 11万t,甲烷氯化物为 10万t,甲醇燃料为 80万t,农药为 22万t,对苯二甲酸二甲酯 3 0万t,其他衍生物 27万t。     

Extraction of rapeseed,linseed, safflowerseed and tobaccoseed with a new laboratory extractor

In this study, extractions of rapeseed, linseed, safflowerseed and tobaccoseed have been conducted with a new extractor which has been developed for the extraction of vegetable tannins and which was later applied to sugar beets and sugar cane. Using the optimal conditions of the new extractor for oilseeds, that is, 315μ particle size and 62 C temperature, technical hexane has been employed, and the variations of the rate and distribution of oil extraction from solid materials have been determined. Optimal extraction periods with the new extractor were found to be 88 min for rapeseed, 90 min for linseed, 118 min for safflowerseed and 90 min for tobaccoseed. The same seeds have been extracted with the Soxhlet extractor for a period of 10 hr. Soxhlet extractor yields compared to Gülbaran yields with the new extractor were found to be only 98.18% for rapeseed, 98.15% for linseed, 97.79% for safflowerseed and 97.39% for tobaccoseed.     

Oil and water analysis of sunflower seed by near-infrared reflectance spectroscopy

The applicability of NIR for oil and moisture analyses of sunflower seed was determined using a NIR spectrocomputer system. The method was compared with the wide-line NMR method for oil analysis and with the A.O.C.S. oven method for moisture analysis. The NIR was calibrated with 120 samples for oil (96 for calibration, 24 for prediction) and 63 samples for moisture (55 for calibration, 8 for prediction). Twenty-two sunflower seed samples were analyzed for oil and moisture by NIR and by methods used by industry. The oil contents of the samples by NMR and NIR were not significantly different. The overall mean oil contents and mean of the standard deviations for the samples were: NMR, 44.2%±0.35% and NIR, 44.34%±0.74%. A significant difference was found between the moisture values obtained by the oven-drying method and NIR. The average standard deviation for moisture by NIR was 0.57% compared with 0.07% for the oven-drying method. The variability of the oil content in one of the commercial seed samples was 1.52% oil as determined by NMR and 2.52% as determined by NIR. The advantages and disadvantages of both methods are discussed.     

丙型肝炎病毒核心总抗原检测试剂的评价

目的评价国外丙型肝类病毒核心抗原检测试剂盒的质量以及窗口期检测核心总抗原(HCVcAgTrak-C)的意义。方法用该试剂检测8649份自然献血员及566份HCV可疑感染者血清的核心总抗原,并与抗体试剂(Anti-HCV)、游离抗原(HCVfreeAg)试剂、核酸(HCVRNA)试剂进行比较。结果筛出核心总抗原和抗体同时阳性血清152份,抗体阴性而总抗原阳性血清5份。利用RNA试剂检测这5份血清,结果HCVRNA阳性。利用HCVfreeAg试剂检测这9215份血清,发现2份阳性,其中1份为抗原和抗体同时阳性,RIBA检测确证这份血清产生的是核心区抗体。另1份为单独抗原阳性。结论在应用HCV抗体试剂对血液进行筛查的同时使用HCVcAg试剂检测,可以减少因窗口期造成的漏检。     

A control system for gas-dynamic flows in tunnel furnaces

A system has been developed for choosing the parameters of gas and air flows for tunnel furnaces for various purposes. An algorithm has been devised for controlling a system for selecting the hot air from the cooling zone for the dryer and for differential transfer of atmospheric air through special throttle packings in the cooling zone in order to reduce the level of thermal shock on components and normalize the gas-dynamic parameters of the working channel.