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Investigating the Effect of Methylcyclopentadienyl Manganese Tricarbonyl on the Properties of Unleaded Motor Gasoline (1): Induction Period

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China Petroleum Processing & Petrochemical Technolog. 2004年第1期6卷 17-22页

作者： Lu Changbo Xiong Chunhua Liu Huiying Wei Rui( pol res.arch inst.tute of General log.stics Department, PLA, Beijing 102300) pol res. inst. ceneral log. dept. PLA Beijing 102300 China

In this paper, the effect of MMT on the induction period of unleaded motor gasoline was studied, the manganese concentration, storage period of MMT-blended gasoline and environmental variables such as temperature and radiation intensity were considered to be main factors affecting the induction period of gasoline,when MMT-blended gasoline was exposed to light. It is found from experiments that the addition of MMT can improve the induction period of gasoline that is shielded from light, and reduce the induction period remarkably,when the gasoline is exposed to light. However, the radiation intensity is proved to be the leading influencing factor among all the environmental variables investigated.

关键词：甲基环戊二烯锰无铅汽油诱导期 MMT 生产工艺炼油行业

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中国原发性高血压患者中脂蛋白基因S447X多态性与脂蛋白脂质及血压水平的相关性

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世界核心医学期刊文摘（心脏病学分册） 2005年第1期1卷 50-51页

作者： Lee L. 宁宁 dept. of Epidemiol. and Biostatist. Sch ool of Public Health Peking University Beijing 100083 China

Objective: To investigate the association between the S447X polymorphis m of th e lipoprotein lipase (LPL) gene and lipoprotein lipid and blood pres.ure (BP) le vels in 904 Chinese subjects with essential hypertension. Method: Five hundred a nd sixty-three male and 341 female patients (aged 35-69 years) were randomly s elected from hypertensive patients diagnosed in the Community-based Comprehensi ve Studies on Prevention and Control of Hypertension Project in China (CCPACH) a nd not treated with antihypertensive medications for at least 2 weeks immediatel y before blood collection. res.lts: After multivariate adjustment for age, body mass index (BMI), smoking status, alcohol intake and serum glucose, the X447 all ele was significantly associated with low triglyceride, log.triglyceride: high- density lipoprotein (HDL)-cholesterol ratio and high HDL-cholesterol levels co mpared with the S447S genotype, but not with BP levels in the whole study popula tion. However, upon stratification for dyslipidemic status, the X447 allele was associated with higher systolic blood pres.ure (SB P) (Pres.ure (PP) (Ppol ymorphism and dyslipidemic status was observed for SBP and PP levels, suggesting that dyslipidemic status might modify the effect of the LPL S447X polymorphismo n BP levels. Conclusions: Our findings suggest that a high concentration of trig lyceride and/or low concentration of HDL-cholesterol are associated with high S BP and PP in hypertensive patients with the X447 allele of the LPL gene.

关键词：原发性高血压 S447X 多态性降压药物研究人群综合防治研究

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