GC／MS／CPU联用技术在海军军事医学中的应用

The article mainly introduced the application of GC/MS/CPU technique in navy military medicine. Firstly, qualitative study of components existing in the air of navy special environment and qualitative analysis of hazardous substances produced in special circumstance and on special conditions; Due to the study, the number and classification of the components in the air could be made clear, the source of air pollution and pathway could be found, varying rule of concentration could be made obvious, and the aim of overall assessment and control of the air quality could be realized. Secondly, analytical study of released substances from nonmetallic material used by ships; the study was fundamental work for assessment of ship-used material toxicity of ship-used materials and presented data for modeling, screening and first choice of the material. Thirdly, qualitative analysis of some special substances from crew's metabolic products; the study was the key to studying effects of hazardous materials on crew's body. Pathway of the materials entering the body, mechanism and metabolic process might be made clear by the study, which could presented bases for prevention and treatment of crew's special disease. Fourthly, analysis of ingredients and structure of drugs and health-care food; the study was to present necessary technique consults for research, development and production of new products.     

FREQUENCY OVERLAPPED SIGNAL IDENTIFICATION USING BLIND SOURCE SEPARATION

The concepts, principles and usages of principal component analysis (PCA) and independent component analysis (ICA) are interpreted. Then the algorithm and methodology of ICA-based blind source separation (BSS), in which the pre-whitened based on PCA for observed signals is used, are researched. Aiming at the mixture signals, whose frequency components are overlapped by each other, a simulation of BSS to separate this type of mixture signals by using theory and approach of BSS has been done. The result shows that the BSS has some advantages what the traditional methodology of frequency analysis has not.     

废旧橡塑合金改性剂制备及其改性基质沥青的机理

基于废旧橡胶粉和废旧塑料的组分分析,制备了不同橡塑比(质量比)的废旧橡塑合金改性剂,并研究了废旧橡胶粉和废旧塑料的共混机理;利用优选的废旧橡塑合金改性剂制备了废旧橡塑改性沥青,分析了废旧橡塑合金改性剂对基质沥青的改性机理,测试了废旧橡塑改性沥青的技术性能和存储稳定性.结果表明:当橡塑比为7∶3时,废旧橡胶粉和废旧塑料具有良好的相容性;废旧橡胶与废旧塑料的共混过程及废旧橡塑合金改性剂对基质沥青的改性过程均以物理作用为主;废旧橡塑合金改性剂与基质沥青具有良好的相容性,废旧橡塑改性沥青具有良好的技术性能和存储稳定性.废旧橡塑合金改性剂明显改善了基质沥青的路用性能,具有应用潜力.     

光触媒产品的组分分析

采用化学分析法、电子能谱仪、红外光谱仪对某外资企业的光触媒产品进行分析。实验结果表明：光触媒产品中二氧化钛的含量为0．092g／L，钙离子总浓度达到14．84g／L，无机物存在有次氯酸钙和氯化钙，有机物存在有聚乙烯和聚丙烯酰胺。     

高产花生四烯酸菌的原生质体诱变育种研究

以轮梗霉紫外诱变突变株A1.13为出发菌株,制备其原生质体并连续采用紫外线、微波及硫酸二乙酯作为诱变剂进行多轮诱变,通过15℃低温和0.12g/ml乙酰水杨酸初筛及摇瓶发酵复筛,得到花生四烯酸稳定提高的突变株MW40 DES20 Ⅱ-4,其花生四烯酸占总脂肪酸的含量从出发株的8.034%提高到15.098%.采用5L全自动发酵罐发酵,其生物量、油脂产量和花生四烯酸产量分别达到12.252、4.307g/L和604.557mg/L,分别比对照提高了24.96%、56.39%和193.924%.通过突变株的脂肪酸组分分析,认为多轮诱变对于脂肪酸生产菌是有效的育种手段.     

一起220 kV GIS闪络故障分析及建议

针对临沂供电公司的一起GIS组合电器事故,运用常规与非常规化学、电气试验手段,对GIS SF6CT气室中闪络故障前后气体成份及CT气室内的材料进行排查试验,分析了事故原因,指出事故是由内置式CT气室内的丁腈橡胶板中的腐蚀性硫与气室内触头等镀银件反应形成硫化银,最终形成导电通道,引起CT气室闪络击穿.对此类典型故障进行了详细的分析总结,具有典型的指导意义.     

应用组份分析方法检验电容器绝缘油的品质

电力电容器绝缘油生产厂家由于原材料选用的原因及生产工艺的不同,导致合成绝缘油的最终组分可能产生差异。采用气相色谱分析及气质联用分析方法对各厂家生产的PXE、PEPE、M/DBT的组份及其同分异构体的含量进行了测定,对绝缘油品质的现状及质量控制提出了一些见解。     

稠油火驱产出气分析方法建立及优化

火驱是稠油油藏重要增产措施之一。火驱过程中会产生大量气体,准确分析火驱产出气体的组分能为火驱的顺利开展提供重要的保障。本文利用气相色谱仪对火驱产出气组分分析的实验方法进行了研究,通过优化实验条件及完善数据处理方法,建立了有效、准确的火驱产出气体组分气相色谱分析方法。该方法采用的载气为氩气,柱温80℃,填充柱流量8ml/min,毛细管柱流量3ml/min。利用建立的分析方法可以测定出火驱产出气中氧气、二氧化碳、氢气、氮气、一氧化碳和甲烷等6种气体组分的含量,其准确度能够满足现场要求,并成功应用于火驱现场。     

汾河水库沉积污染物赋存形态及释放特性研究

以汾河水库沉积物为对象,通过灭菌—未灭菌、投药—未投药(还原剂)静态对比实验,系统考察了PO3-4、NH+4-N、Fe等污染物的内源释放特性,并对沉积磷及其各组分形态进行分析。结果表明:微生物代谢活动促进底泥磷释放;ORP影响氮、磷释放,但NH+4-N释放对于ORP变化的敏感度不及PO34-;厌氧条件下(DO=0~0.5mg/L),灭菌反应器中NH+4-N、Fe释放强度均高于未灭菌组;Fe、P释放间存在线性正相关性(R2=0.7585~0.7656)。底泥磷释放以O-P、Fe-P为主,其中各形态无机磷占其总量的百分比排序为:Ca10-P(47%)>Fe-P(25%)>O-P(19%)>Ca8-P(5%)>Ca2-P(3%)>Al-P(1%);此外,还证明了碱性磷酸酶比活性(APA)变化与内源磷释放间存在负相关性。     

液体深层发酵红曲色素精制研究

本研究采用层析方法（薄层析，柱层析）对液体深层发酵红曲色素进行了组分分析，红、黄色素分离和精制，初步探明了液体深层发酵红曲色素的组分，增加了色素的纯度，提高了色价和色调。最终除得到膏状和液体状产品外，还采用助干燥剂经喷雾干燥的方法制得粉末状色素，改善了色素的水溶性。