Design,Modeling and Control of a Simulator of an Aircraft Maneuver in the Wind Tunnel Using Cable Robot

International Journal of Control, Automation and Systems - In this paper, a new controllable simulator is proposed and modeled by which, experimental tests of the aircraft’s models can be...     

Compatibilization mechanisms of nanoclays with different surface modifiers in UCST blends: Opposing effects on phase miscibility

The effects of organically modified and pristine nanoclays on the kinetics of thermodynamic equilibrium state attainment for semicrystalline binary blends of polyethylene (PE)/ethylene-vinyl acetate copolymer (EVA) have been investigated. Due to the non-equilibrium compatibilization mechanism, intercalated organoclay results in a slower rate of phase miscibility change at lower annealing temperatures, thereby worsening the PE/EVA compatibility state. In contrast to poorly dispersed pristine nanoclay, the homogeneous state is obtained at higher or equal rates by adding organoclay at higher annealing temperatures because of the dominant role of nanofiller equilibrium compatibilization mechanism. Phase diagrams of these UCST blends determined by a dynamic method shifts to higher temperatures by the incorporation of nanofillers and the unexpected reduction in miscibility window area is much more noticeable for nanocomposites having highly restricted molecular movements. This can verify that dynamic methods lose their efficiency for measuring the equilibrium phase diagram of polymer blends containing nanoparticles.     

Thermogravimetric analysis and kinetic study of heavy oil pyrolysis

Pyrolysis, so-called devolatilization, is one of the first steps of all thermochemical processes occurring in an inert atmosphere. The authors discuss the main kinetic features of heavy oil pyrolysis, on the basis of the data derived m from a TGA analysis and by using a kinetic model. The samples were heated over a range of temperature from 400 K to 430°C at various heating rates between 10 and 80°C/min. Experimental results showed that the effect of time is considerable in the case of tar conversion, compared to char and gases.     

Effect of Mentha spicata L. and Mentha aquatica L. essential oils on the microbiological properties of fermented dairy product,kashk

The antibacterial activity of Mentha spicata and Mentha aquatica essential oils (EO) was tested against Staphylococcus aureus, Lactobacillus reuteri, Bifidobacterium animalis and Clostridium perfringens using agar well and disc diffusion techniques. Results showed that M. spicata EO had the highest inhibition activity against the studied microorganisms. Then, the antibacterial activity of both EO at 1500 and 2500 ppm was examined in industrial liquid kashk during the storage at 4 °C for 20 days. Both EO reduced the S. aureus viable count below 5 log CFU g^?1 after 4 days; however, the population of C. perfringens, L. reuteri and B. animalis decreased <1 log CFU g^?1 during the storage time. The least deteriorative effect on the lactic acid bacteria was related to M. aquatica. As revealed by organoleptic studies, kashk samples containing M. aquatica EO at 1500 and 2500 ppm were the most preferred samples.     

牛东火山岩油藏岩性识别技术及应用

牛东石炭系火山岩油藏是吐哈油田发现的第一个火山岩油藏,岩性复杂多变,准确识别岩性对储层识别显得尤为重要,也是划分火山岩喷发期次、识别岩相、建立储层参数解释模型、综合评价储层的基础。本文在测井响应特征分析的基础上,结合各种取心、录井资料,分三步建立牛东火山岩岩性识别模式,取得了较好效果,为同类油田进行火山岩岩性识别提供借鉴作用。     

三塘湖油田火山岩储层压裂技术现状及对策

三塘湖盆地上石炭统卡拉岗组（C2k）火成岩储层岩石成分复杂、基质物性差、天然裂缝发育、温度压力低等特点，给火成岩的压裂改造带来了诸多难题。通过对国内近年火山岩油藏开发、压裂技术调研，以及吐哈现有火山岩压裂技术现状的评价，提出了下步技术对策建议。     

辽河、大庆油田火山岩油藏开发对牛东开发的启示

辽河油田火山岩油藏开发积累了近10年的经验，大庆油田近几年在火山岩油藏识别、评价和预测方面做了系统深入的研究。这两个油田在火山岩油藏的地层划分识别、裂缝研究、开发规律研究以及水平井应用和注水开发方面都开展了很多有益的探索和实践，对三塘湖盆地牛东区块下步将要开展的油井产能分布规律研究、开发井网部署、开发方式、水平井应用及开发指标的科学合理预测都具有重要的指导意义。     

牛东火山岩油藏注水先导试验

注水开发对于砂岩类油藏是一项成熟的补充能量的开发技术，裂缝对火成岩油藏注水开发效果影响较大，通过注水先导试验，解决牛东区块火成岩注水开发是否可行、注入水推进的方向性及裂缝对注水开发的影响等问题。针对牛东区块储层及开采特征，借鉴国内同类油田注水开发效果，分析牛东区块注水能力，提出建议，指导油田开发。     

火山岩油藏储层特征及开发对策

近年来，随着石油工业的发展和勘探技术的提高，火山岩油气藏相继在国内外都有比较多的发现。由于火成岩油气藏具有分布广但规模较小、初始产量高且递减快、储集类型和成藏条件复杂等特点。目前，对该类油气藏的系统研究方法相对缺乏，勘探开发技术尚不够完善。在此总结了火山岩储集层的特征及油藏类型，阐述了火山岩油气藏的开发方式，分析了国内外火山岩油气藏研究及勘探开发的成功实例，提出了火山岩油藏开发的几点建议，以期对吐哈探区三塘湖盆地火山岩油气藏的勘探开发起到一定的借鉴作用。