卫生陶瓷重烧数学模型的建立及烧成制度的确定

本文分析了产品的抗热震性，通过建立产品重烧升温速率计算模型，计算了产品烧成的最大升温速率，确定了合适的产品重烧制度。实验结果表明，理论值基本上符合产品的升温速率。     

全方位售后服务管理系统的开发

分析了企业产品理赔数量上升的原因，提出了控制产品理赔数量的方法，并开发了全方位售后服务管理系统，它由废次品检验管理系统，产品发货管理系统，产品开票管理系统，理赔产品控制管理系统，客户终端管理系统和业务人员管理系统六部分组成，可有效控制产品理赔数量，减少不合理理赔对企业造成的经济和信誉方面的损失。     

针织复合毡（无皱褶复合织物）的发展及应用

本文介绍了国外，国内玻璃纤维无皱褶织物即玻璃纤维针织复合毡的开发过程，描述了产品的工艺及结构，列举了测试数据，论述了本产品的性能及在玻璃钢产品中的应用，并展望了本产品的发展前景。     

浅论我国炭黑产品专用化

本文对专用炭黑、炭黑产品专用化作了定义，简要总结了上炭黑产品专用化状况。认为，炭黑产品专用化是我国炭黑产品发展的必然趋势，提出了加速我国炭黑产品专用化发展进程的措施。     

自干耐酸抗蚀印料的研制

就该产品主要成分确定及各成分间的最佳配合试验作了介绍，提出了较理想的配方设计产品工艺路线，试验结果表明：该产品配方设计合理，产品性能优良，并完全适应电路板生产工艺对产品的技术要求。     

益阳橡塑机今年订单大幅上升

益阳橡胶塑料机械集团有限公司截至４月份，产品订货比去年同期大幅上升，为完成全年奋斗目标打下了坚实基础。近几年来，该公司十分重视产品创新，在强化管理、苦练内功的同时，投入近１００万元改造了技术设计中心的环境与硬件设施，大大改善了科研工作条件。为加快产品创新，公司主要领导牵头成立了科技创新领导小组，使产品创新工作取得了明显成效，先后完成了GK型密炼机、轮胎硫化机、双锥双螺杆挤出机、鼓式硫化机、平板硫化机及大型硫化罐等产品的系列开发工作，新增各种规格产品近４０个，较好地满足了市场与各类用户对产品的需求…     

对我国农药产品标准中存在问题的研讨

介绍了我国农药产品标准的现状，对标准制订、发行及地方标准问题，农药产品标准中的检验方法问题，进口农药产品标准及推荐性农药产品标准问题，以及农药基础标准的存在问题作了阐述。并对解决目前农药产品标准存在的问题提出了看法和建议。     

电子信号产品三防处理技术应用

三防处理技术在产品上的运用，可有效提高产品的安全性及可靠性，延长产品的使用寿命，改善产品对恶劣环境的适应能力，并能提高产品的防雷、绝缘等性能。介绍了铁路电子信号产品三防处理的技术应用。     

选煤厂产品储装运工艺系统优化及改造

针对选煤厂在产品储装运系统方面存在的生产能力与产品储煤能力不均衡，装车系统设备频繁启停、空载的问题。通过开展产品储装运工艺系统优化及改造，优化产品储存工艺，深挖产品筒仓储存能力，增加产品进仓灵活性，提高筒仓利用率。生产实践证明，产品储装运工艺系统优化及改造后不仅有效缓解选煤厂生产能力与产品储存能力不均衡的问题，同时汽车快速装车站装车与临时点装车互补，避免了装车系统频繁启停与设备空载，降低了机电故障率，节能降耗效果显著。     

水相法氯化橡胶的性能试验

通过选用3种黏度相近的氯化橡胶产品：CR-2水相法氯化橡胶、KL-10国产溶剂法氯化橡胶及GW—10进口溶剂法氯化橡胶，进行对比试验，检测了3种产品的常规性能，分析了红外光谱，并分别进行了配漆试验。结果表明：水相法氯化橡胶的质量指标达到了溶剂型氯化橡胶产品的质量指标，热稳定性优于国产溶剂型氯化橡胶产品，与进口产品性能相当；配制成涂料的各项性能符合船舶漆产品的技术要求，稳定性与溶剂型产品相当。     

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。     

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。     

Reactive separation of dilute ethylene by hydroformylation using slurried rhodium catalysts on phosphinated resins and silica

A series of slurried rhodium catalysts on phosphinated resins and silica were tested for the reactive separation of dilute ethylene by hydroformylation to propanal. The amount of rhodium leaching was determined for most of the systems investigated. Leaching ranged from <2 to 11% for catalytic runs for resin supported systems, but was found to be much more significant for the phosphinated silica system studied, 19%. The level of rhodium leaching correlated well with the loss in rate of propanal formation between repeated experiments using recycled catalysts for the resin based systems, but the loss in rate was much more significant for the silica based system. This level of leaching is very high for a commercial process for basic chemical synthesis, for which leaching is typically at the ppb level. Rates of propanal formation for resin supported catalyst systems correlated well with the cone angle of the free phosphine, with rates as high as 0.35 mol/l/h. However, while smaller cone angles were found to be directly proportional to rate, supported systems were less active than homogeneous counterparts.     

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。     

Analysis of Gas Centrifuge Cascade for Separation of Multicomponent Isotopes and Optimal Feed Position

Abstract

Analysis of the concentration distribution in a gas centrifuge cascade for separation of multicomponent isotope mixtures is different from that in a cascade for separation of two-component mixtures. This paper presents the governing equations for a multicomponent isotope separation cascade. Numerically predicted separation factors for the gas centrifuge cascade agree well with the experimental data. A theoretical optimal feed position is derived for a short square cascade for a two-component mixture in a close-separation case. The optimal feed position for a gas centrifuge cascade for separation of multicomponent mixture is discussed.     

Effectiveness in the Removal of Organic Compounds from Municipal Landfill Leachate in Integrated Membrane Systems: Coagulation – NF/RO

The article presents the results of studies concerning the hydraulic permeability of integrated membrane systems during the treatment of municipal landfill leachate. The laboratory-scale experiments were conducted to determine the effectiveness of coagulation as a pretreatment option for treating stabilized landfill leachate and effectiveness of nanofiltration (NF) and reverse osmosis (RO) processes. The municipal landfill leachates were analyzed for the concentration of the following: polycyclic aromatic hydrocarbons (PAHs), nitrate nitrogen, ammonium nitrogen, chemical oxygen demand (COD), total organic carbon (TOC), total carbon (TC), suspended soils (SS), turbidity, pH. The commercially available coagulant – aluminum sulfate Al₂(SO₄)₃·18H₂O (alum) was used as a coagulant. The NF process was carried out at the transmembrane pressure of 1.5 MPa. The membrane separation process was based on a thin film membrane (DK). The transmembrane pressure of the RO stood at 2 MPa and for this process one polyamide membrane (AG) was used. The level of leachate treatment was defined for raw and cleaned wastewater indicators. Both NF and RO membranes allowed obtaining the high level of pollutants removal. In the coagulation–NF system, the removal efficiency was equal to 77% for PAHs, 88% for COD, 72% for ammonium nitrogen, 80% for nitrate nitrogen, 67% for TOC, 80% for TC, 96% for SS and during the RO – 86% for PAHs, 98% for COD, 93% for ammonium nitrogen, 87% for nitrate nitrogen, 89% for TOC, 100% for TC, 98% for SS. The calculations based on the assumptions of the mathematical filtration model (relaxation) made it possible to predict the efficiency of commercial filtration membranes used for leachate treatment.     

抗生素含量测定方法在《中国药典》2010年版中的应用比较

文章主要结合《中华人民共和国药典》2010年版中收载的348个抗生素品种,对抗生素含量测定的方法进行了统计分析,其中有247个品种采用高效液相色谱法,86个品种采用微生物检定法,3个品种采用滴定分析法,12个品种采用紫外分光光度法。     

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。     

含NHD废水的回收处理

对NHD溶液污染的原因进行了分析,提出了防止污染可采取的措施,重点介绍了含NHD废水的回收工艺。多年来的实际应用情况表明：含NHD废水回收装置对污染严重的NHD溶液和过滤器反冲洗含NHD废水的回收有较理想的效果,且装置流程简单、操作方便、投资少、回收率高,经济和环保效益明显。     

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.