Response of antioxidase in viscera of Pagrosuma Major larvae to water soluble fraction of hydrocarbons in No.0 diesel oil

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非烃和沥青质热模拟生烃研究

为弄清楚非烃 +沥青质热演化过程中的生烃情况 ,对未熟非烃 +沥青质进行了低温模拟生烃实验 ,实验结果表明非烃 +沥青质在低温条件下 (<2 5 0℃ )生成烃类气体量很少 ,主要以生成液态烃为主 ,液态烃转化率最高可达 388mg/g ,所生成的液态烃表现出明显的奇碳优势 ,为未熟 低熟油。原始母质类型不同的非烃+沥青质模拟产物特征有所不同。非烃 +沥青质对未熟 低熟油的生成有重要意义。     

影响炼厂气脱硫效果的因素分析

结合生产情况对影响炼厂气脱硫效果的因素进行分析，重点阐述通过调整操作条件、改善胺液再生环境等措施，可提高LPG胺液脱H2S的效果，胺液脱硫后H2S含量小于5mg／m^3     

论轻烃储存罐区泄漏的技术处理

本文针对轻烃储存罐区的几种泄漏情况进行了分析，并结合生产实际提出了合理的技术处理方法，对于轻烃储存的安全生产具有一定的实际意义。     

华北地区下古生界海相烃源岩饱和烃生物标志物地球化学特征

本文对华北地区下古生界海相烃源岩生物标志化合物地球化学进行了系统的研究工作，并在烃源岩抽提物中检测到种类丰富的生物标志物，在此基础上讨论了生物标志化合物的分布特征及其地球化学意义，这一工作不仅为华北地区下古生界油气勘探提供了理论依据，而且丰富了碳酸盐岩有机地球化学理论。     

Response of antioxidase in viscera of Pagrosuma major larvae to water soluble fraction of hydrocarbons in No.0 diesel oil

Pagrosomus major larvae were to the water-soluble fraction of hydrocarbon in No.0 diesel oil(corresponding to No.2 fuel oil) at concentration of 0,0.17,1.22 and 8.82mg/L for up to 15 days.Larvae were sampled on days 9 and 15 of the experiment.Supernatants of viscera tissue extractions were assayed for biochemical response in terms of oxidative stress-superoxide dismutase(SOD),activity of selenium-dependant glutathione peroxidase(Se-GPx) and catalase(Ca),and the concentration of reduced glutathione(CSH).On day 9 of exposure ,statistically significant dose-related increases in Se-GPx and SOD activity,and GSH concentration were observed in all cases except for Se-GPx activity under the highest dosage of hydrocarbon.However,on day 15 of exposure, a similar dose-related in all cases except for Se-GPx activity under the highest dosage of hydrocarbon.However,on day 15 of exposure, a similar dose-related response was only observed for Se-GPx activity.GSH concentration decreased and SOD activity showed no statistical difference as compared to controls.However, a significant decrease in compared to day 9 Se-GPx activity and GSH concentration, in contrast to increase SOD activity at day 15 as indicates an accelerated accumulation of H2O2 and potential oxidative damage under long term exposure of larvae to hydrocarbons.No statistical changes were observed in Ca activity throughout the experiment, possibly owing to the high efficiency of Se-GPx.A recovery experiment was performed on indicating that the response of antioxidants measured tending to returm to return to their control levels.These results prove the function of the antioxidant defense system of the larvae to the water-soluble fraction of hydrocarbons in No.0 diesel oil.     

生油岩五环芳烃的热演化及成熟度参数

塔里木盆地中生界生油岩中的五环芳烃化合物的热演化呈规律性变化。成熟度较低的样品中的含量较高，苯并芘和苯并荧蒽的含量较低。随着成熟度的增加，含量逐渐下降，而苯并芘和苯并荧蒽的含量不断增多，这表明两者的成因及其演化途径不同。前者可能为有机质早期演化的产物，而后者主要来自环化和芳构化作用。生油层剖面样品分析资料表明，苯并[e]芘／和（苯并[e]芘＋苯并[a]芘）／之比值是良好的成熟度参数，它们可指示生油岩成油高峰期。     

Identification of polyenic hydrocarbons from the northern winter moth, Operophtera fagata, and development of a species specific lure for pheromone traps

Summary. In order to elucidate the composition of the female sex pheromone of the northern (beech) winter moth, Operophtera fagata Scharf. (Lepidoptera: Geometridae), ovipositor extracts of unmated, calling females were analysed by gas chromatography with simultaneous electroantennographic and flame ionization detection (GC-EAD/FID). Male antennal responses indicated three active components, two of which had distinct matching peaks in the FID trace. Using coupled gas chromatography- mass spectrometry (GC-MS), these two compounds were identified as (9Z)-nonadecene (9Z-19:Hy), and (6Z,9Z)-nonadecadiene (6Z9Z-19:Hy), respectively. The third component, present in very small amounts only, was identified as (1,3Z,6Z,9Z)-nonadecatetraene (1,3Z6Z9Z-19:Hy), known as the sex pheromone of the common winter moth, O. brumata. Field tests revealed that traps baited with 6Z9Z-19:Hy and 1,3Z6Z9Z-19:Hy caugth large numbers of male O. fagata. Both compounds were found to be essential for attraction of O. fagata. In addition, the diene prevented captures of co-occurring O. brumata. In contrast, 9Z-19:Hy neither influenced the attractiveness of the two-component mixture towards O. fagata nor contributed to bait specificity. A binary mixture of 6Z9Z-19:Hy and 1,3Z6Z9Z-19:Hy in a ratio of 10:1, applied to pieces of rubber tubing, constituted a highly attractive and species-specific bait for O. fagata, which can be used for monitoring of the flight of this defoliator pest of deciduous forests.     

不同底物和环境条件对两株铜绿假单胞菌接触烷烃方式及降解活性的影响

考察了不同烷烃底物和温度、酸度、盐度等环境条件对两株铜绿假单胞菌接触烷烃方式和降解活性的影响.结果表明,微生物接触烷烃的两种方式——直接接触方式和乳化接触方式同时存在于菌体降解烷烃过程中且受底物和环境条件的影响.底物烷烃碳数的增加对菌株两种接触方式降解烷烃都有利,而盐度增加对它们都不利;高温、偏碱性环境以及延长降解时间有利于菌体以乳化方式降解烷烃;低温、中性溶液环境有利于菌体以直接接触方式降解烷烃.     

重金属和多环芳烃复合污染对土壤酶活性的影响及定量表征

以土壤脲酶和脱氢酶为探针物质，室内培养条件下较为系统地研究了重金属（Cd、Zn、Pb）和多环芳烃（菲、荧蒽、苯并a芘）复合污染对土壤酶活性的影响及其定量表征、结果表明，复合投加上述污染物能使土壤酶活性受到不同程度的抑制，其中，脱氢酶最为敏感，其活性是表征重金属和多环芳烃复合污染的一项重要的参考指标．对复合污染模型的建立与分析表明，土壤环境中，重金属和多环芳烃复合污染的类型和强度与污染物的浓度和复合污染时间密切相关．影响土壤脲酶活性的主要因子依次为：Cd〉Zn与苯并a芘的交互作用〉Zn〉Pb〉Zn和菲的交互作用，影响土壤脱氢酶活性的主要因子依次为：Cd和Zn的交互作用〉Cd〉Zn〉苯并a芘〉Cd和菲的交互作用，其中，Zn和苯并a芘相互作用对脲酶活性以及Cd和Zn交互作用对脱氢酶活性的影响均表现为拮抗作用，Zn和菲，Cd和菲之间的交互作用，无论是对脲酶还是脱氢酶均表现为协同作用，图1表3参18