The Research of Simulating Transportation Vibration Test Method based on Typical Road Spectrum

针对深圳某一路段使用美国Lansmont公司开发的SAVER环境应力记录仪记录汽车运输过程中的环境应力,利用相关处理软件整理分析数据,最后在实验室中的通过电磁振动台的随机振动模式来进行模拟重现从而实现“Field to lab”.该方法用短时间的实验室内试验来代替长时间的实际运输过程,不仅绿色环保,而且省时省力,是一种值得推广的试验方法.     

N系列聚丙烯催化剂生产中含P含Ti高沸物的处理

通过水合、萃取、水洗等操作工艺对N系列催化剂生产过程中产生的含P含Ti高沸物进行处理。用去离子水回收含P含Ti高沸物中的TiCl4,形成TiCl4水溶液;采用萃取剂S(一种醇类物质)对TiCl4水溶液进行萃取净化;三次萃取后TiCl4水溶液中的ρ(P)和ρ(Mg)均小于50mg/L,达到厂家优级品要求。采用新工艺对含P含Ti高沸物进行无害化处理,与原工艺比较,每生产1t催化剂,可节省质量分数为40%的液碱约15t,减少废渣13t左右,减少废水20t以上。     

新疆某油区土壤污染状况研究

对新疆某油区的土壤污染状况进行研究,以期为石油开采区土壤生态环境保护与治理提供基础资料。通过对新疆某油区内的土壤环境状况调查发现,油田开发过程中产生的钻井废水、原油脱出水、井下作业废水、钻井废弃泥浆、钻井岩屑、污水处理厂污泥、罐底油泥是土壤污染的重要来源;该油区土壤受油田开发活动的影响,石油类、铬、总盐的含量升高,土壤有机质含量降低,pH趋于弱酸性。油气田开发项目应加强对污染物的管理,及时完善环保措施,并建立有效的环境管理制度,将油气田开发活动对环境的影响降到最低。     

基于“互联网＋”的海外员工健康管理 平台设计及应用

针对目前国内健康管理存在健康信息采集来源狭窄、健康指标数据利用效率低、信息化水平和功能与用户及社会发展不匹配等问题,设计开发了基于"互联网+"的海外油田员工健康管理信息化平台。通过运用互联网技术,使健康管理更加快捷化、流程化和规范化,实现了员工出国前健康体检、出国前健康评估和出国后健康监测的全业务流程在线管控,同时系统自动采集体检报告,形成完整的员工健康档案,提升了员工健康管理水平,为海外油田员工体检套餐优化、重点疾病防控和出国健康评估等提供了全面的数据决策依据。     

四氯乙烯急性吸入毒性的分类回归分析

根据毒理学试验数据讨论四氯乙烯急性吸入毒性的剂量-反应关系.首先总结了有关四氯乙烯急性暴露的毒理学试验数据,并利用分类回归的方法,得出了小鼠、大鼠与人类暴露于四氯乙烯时,暴露时间、暴露浓度与健康后果之间的关系,同时分析了不同受试动物的种间差异.结果表明,健康效应的发生概率随暴露浓度和时间的增大而增大,而当暴露浓度达到某一值的时候,健康后果的发生概率不再随浓度变化而变化,将这一浓度视为饱和浓度;不利效应(AE)对应的饱和浓度要低于剧烈效应(SE),且暴露时间越长,饱和浓度则越低,同时饱和浓度随受试动物的不同而变化,人类的饱和浓度最低,大鼠的则最高.     

基于NSGA-II的工业区急救点优化布局研究

针对工业区急救点布局存在的问题,综合考虑多种影响因素,建立多目标多约束数学模型.将成本、急救时间和急救点数量作为3个优化目标,并根据实际情况构建相应的约束条件.运用NSGA-II(带精英策略的快速非支配排序遗传算法)解决多目标优化问题,最终得到一系列Pareto最优解,其解空间分布均匀,并且具有良好的收敛性和鲁棒性.文章结合某工业区急救点优化问题对算法进行验证,结果与实际情况匹配良好,此研究具有重要的现实意义.     

华北型煤田岩溶陷落柱导水性研究

岩溶陷落柱在华北型煤田广泛发育和分布。本文研究了华北型煤田岩溶陷落柱的导水类型、导水条件及突水规律特点。这对华北型煤田煤矿安全生产有重要意义。     

Exposure of acid aerosol for schoolchildren in metropolitan Taipei

Metropolitan Taipei, which is located in the subtropical area, is characterized by high population and automobile densities. For convenience, most primary schools are located near major roads. This study explores the exposure of acid aerosols for schoolchildren in areas in Taipei with different traffic densities. Acid aerosols were collected by using a honeycomb denuder filter pack sampling system (HDS). Experimental results indicated that the air pollutants were significantly correlated with traffic densities. The ambient air NO₂, SO₂, HNO₃, NO₃⁻, SO₄²⁻, and aerosol acidity concentrations were 31.3 ppb, 4.7 ppb, 1.3 ppb, 1.9 μg m⁻³, 18.5 μg m⁻³, and 49.5 nmol m⁻³ in high traffic density areas, and 6.1 ppb, 1.8 ppb, 0.9 ppb, 0.7 μg m⁻³, 8.8 μg m⁻³ and 14.7 nmol m⁻³ in low traffic density areas. The exposure levels of acid aerosols for schoolchildren would be higher than the measurements because the sampling height was 5 m above the ground. The SO₂ levels were low (0.13–8.03 ppb) in the metropolitan Taipei. However, the SO₄²⁻ concentrations were relatively high, and might be attributed to natural emissions of sulfur-rich geothermal sources. The seasonal variations of acid aerosol concentrations were also observed. The high levels of acidic particles in spring time may be attributed to the Asian dust storm and low height of the mixture layer. We conclude that automobile contributed not only the primary pollutants but also the secondary acid aerosols through the photochemical reaction. Schoolchildren were exposed to twice the acid aerosol concentrations in high traffic density areas compared to those in low traffic density areas. The incidence of allergic rhinitis of schoolchildren in the high traffic density areas was the highest in spring time. Accompanied by high temperature variation and high levels of air pollution in spring, the health risk of schoolchildren had been observed.     

磷钨酸催化合成混合二元酸二丁酯

采用混合二元酸和正丁醇为原料,以自制磷钨酸为催化剂,甲苯为带水剂,合成了混合二元酸二丁酯.通过均匀设计和单因素实验研究得到混合二元酸二丁酯合成的最佳工艺条件:n(正丁醇):n(混合二元酸)为3.0,催化剂与混合二元酸的质量比为2.2%,甲苯在反应体系中的质量分数为22%,反应时间为2.0 h.在最佳工艺条件下反应的酯化率为99.44%.     

Antibiotic effect of exogenously applied salicylic acid on in vitro soilborne pathogen, Fusarium oxysporum f.sp.niveum

Salicylic acid, which is biosynthesized inside plant and is often found and accumulated in soil due to plant debris decaying, is considered as a signaling substance during plant-microbe interactions. It is involved in the cycling of biogeochemistry and related to plant resistance to biotic and abiotic stress. The antibiotic effect of salicylic acid on Fusarium oxysporum f.sp.niveum (FON) was studied to investigate the relationships between the salicylic acid and the fungus in the ecological interaction of plant-microbe. Results showed that the biomass, colony diameter, number of conidium germination and conidium production of FON were decreased by 52.0%, 25.7%, 100% and 100% at concentrations of 800 mg L(-1). However, mycotoxin yield was increased by 233%, pectinase activity raised by 168.0% and cellulase activity increased by 1325% compared to control at higher concentrations. It was concluded that salicylic acid as an allelochemical greatly inhibited FON growth and conidia formation and germination, though stimulated mycotoxin production and activities of hydrolytic enzymes by FON.