Discovery and Significance of High CH_4 Primary Fluid Inclusions in Reservoir Volcanic Rocks of the Songliao Basin,NE China

Comparing compositions of the fluid inclusions in volcanic rocks to the contents and isotopes of the gases in corresponding volcanic reservoirs using microthermometry, Raman microspectroscopy and mass spectrum analysis, we found that： （1） up to 82 mole% methane exists in the primary inclusions hosted in the reservoir volcanic rocks; （2） high CH4 inclusions recognized in the volcanic rocks correspond to CH4-bcaring CO2 reservoirs that are rich in helium and with a high ^3He/^4He ratio and which show reversed order of 813C in alkane; （3） in gas reservoirs of such abiotic methane （〉80%） and a mix of CH4 and CO2, the enclosed content of CH4 in the volcanic inclusions is usually below 42 mole%, and the reversed order of δ^13C in alkane is sometimes irregular in the corresponding gas pools; （4） a glassy inclusion with a homogeneous temperature over 900℃ also contains a small portion of CH4 although predominantly CO2. This affinity between gas pool and content of inclusion in the same volcanic reservoirs demonstrates that magma-originated gases, both CH4 and CO2, have contributed significantly to the corresponding gas pools and that the assumed hydrocarbon budget of the bulk earth might be much larger than conventionally supposed.

Quantitative research of diagenesis:its effect on pore evolution of the Fuyu oil reservoir in the north Qijia region

From observing cores of 18 wells,identifying 175 ordinary thin sections and 61 thin casting sections,energy spectrum analyses of 37 samples,homogenization temperature measurement of fluid inclusions of 11 samples,we determine the types of diagenesis and pores of the Fuyu oil reservoir in the north Qijia region.We classified the pores and measured their plane porosity using CIA 2000,the software of rock image analysis,calculated the effect of different kinds of diagenesis on porosity,studied the controlling actions of diagenesis to pore evolution quantitatively,combined with burial history,thermal history and their diagenetic environments.Our results show that mechanical compaction and carbonate cementation are the major destructive diagenesed,developed during early diagenesis stages.The reduction in porosity by mechanical compaction and carbonate cementation are about 25% and 8%,while the destructive intensity of siliceous cementation and clay mineral cementation is relatively much smaller,i.e.,the reduction of porosity is about 2% and 0.2% Dissolution is constructive diagenesis,the increment of porosity is about 6%.There are four diagenesis evolution stages,during which the porosity reduced from 30%～38% to 2%～20%.Mechanical compaction and early cementation are the main diageneses in the early diagenesis stages,when porosity was reduced to 2%～10%.Dissolution is the main diagenesis of an A I substage of the middle diagenesis stage,when porosity increased 1%～8%.The dissolution of the A Ⅱ substage of the middle diagenesis stage affected by late cementation,raised porosity 1%～5%.The porosity varied slightly during the middle stage B.

UAV trajectory planning algorithmfor data collection in wireless sensor networks

In order to maximize the value of information(VoI)of collected data in unmanned aerial vehicle(UAV)-aided wireless sensor networks(WSNs),a UAV trajectory planning algorithm named maximum VoI first and successive convex approximation(MVF-SCA)is proposed.First,the Rician channel model is adopted in the system and sensor nodes(SNs)are divided into key nodes and common nodes.Secondly,the data collection problem is formulated as a mixed integer non-linear program(MINLP)problem.The problem is divided into two sub-problems according to the different types of SNs to seek a sub-optimal solution with a low complexity.Finally,the MVF-SCA algorithm for UAV trajectory planning is proposed,which can not only be used for daily data collection in the target area,but also collect time-sensitive abnormal data in time when the exception occurs.Simulation results show that,compared with the existing classic traveling salesman problem(TSP)algorithm and greedy path planning algorithm,the VoI collected by the proposed algorithm can be improved by about 15%to 30%.

胱胺抑制5-羟色胺诱导的人肺动脉平滑肌细胞增殖及机制

目的研究胱胺对5-羟色胺(5-HT)诱导的人肺动脉平滑肌细胞(PASMC)增殖以及Ras同源基因家族成员A(RhoA)信号通路的影响。方法培养人PASMC,用1μmol/L 5-HT进行刺激,以胱胺进行干预。采用CCK8法观察细胞增殖情况;采用Western blot、免疫共沉淀检测RhoA信号通路各蛋白分子。结果5-HT诱导人PASMC增殖,使RhoA 5-HT化、RhoA膜转位、Rho蛋白激酶2(ROCK2)表达以及肌球蛋白磷酸酶目标亚基1(MYPT1)、蛋白激酶B(Akt)、细胞外调节蛋白激酶(ERK)磷酸化明显增加。胱胺抑制5-HT诱导的PASMC增殖、RhoA 5-HT化及MYPT1、Akt、ERK磷酸化,但对RhoA膜转位、ROCK2蛋白表达无显著影响。结论胱胺通过抑制RhoA 5-HT化从而抑制5-HT诱导的人PASMC增殖。

DELMIA虚拟装配技术在飞机研制中的运用

为了提高飞机研制质量,围绕DELMIA虚拟装配技术的应用展开讨论。首先,介绍DELMIA软件与虚拟装配技术,明确二者组合应用对飞机装配的重要性。其次,从虚拟装配方法、飞机研制虚拟装配过程和飞机虚拟装配仿真等环节着手,对某飞机机翼装配进行虚拟装配分析。最后,总结虚拟装配结果,肯定了DELMIA虚拟装配技术的应用价值,有利于提高飞机研制精度和虚拟装配技术水平,以期为今后装配技术人员提供技术方面的参考。

PHM技术在飞机装配单元中的运用

为了提高飞机装配的精度,对飞机装配单元采用预测与健康管理(Prognostics and Health Management,PHM)技术进行了分析,阐述该技术的应用背景和现状,总结了技术应用思路,分别介绍PHM系统结构和智能装配单元结构。最后以尾翼制孔装配单元为例,总结了PHM技术的应用要点,从而确定应用该技术对于飞机装配单元的优势,以期能够为今后飞机装配智能化目标的实现提供助力。

数字化装配仿真技术在飞机装配中的应用

随着信息技术的飞速发展,数字化装配仿真技术在飞机装配领域的应用日益广泛。旨在探讨数字化装配仿真技术在飞机装配中的应用优势,分析飞机装配过程中的关键技术问题,并详细阐述数字化装配仿真技术在飞机装配中的具体应用。通过实例分析,揭示了数字化装配仿真技术对提高飞机装配质量、缩短产品开发周期、降低成本等方面的重要作用。