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Migration and accumulation of natural gas in Kela-2 gas field
With the guidance of petroleum system theory, the dynamic filling history of natural gas in the Kela-2 gas field is analyzed by using a large suite of oil and gas geochemistry evidence in combination with the tectonic evolution history and reservoir evolution history. It concludes that the Kela-2 gas field was formed by capturing the gas generated during the main gas generation period, while the late kerogen cracking gas contributed a little to the gas field. It suggests that the gas generated during the main gas generation accumulated in the early-formed wide-gentle anticline, which is the necessary condition for natural gas to re-migrate and enrich late to form the large-scale gas reservoir. The newest research shows that the filling history of gas in the Dabei-1, Yinan-2, Tuziluoke and Dina-2 gas fields was related with the natural gas accumulation in the early wide- gentle anticline as well as late re-migration and enrichment of natural gas....
2020-09-13 23:35:02浏览：57
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Effect of gas pressure on ionization of ambient gas
An Nd: YAG pulsed laser (145 mJ) was used to ablate aluminum target and Ar was used as protecting gas. Time-and space-resolved spectra of the plasmas under pressure 100 Pa, 1 kPa, 10 kPa and 100 kPa were acquired with time- and space-resolved technique. The characteristics of the plasma radiating under each pressure were briefly described, and the laws of Ar characteristical radiaton were analyzed in detail. Based on the profile of Ar characteristical radiation under these pressure, the relation between protecting gas pressure and its ionization was briefly discussed, and explained with quantum theory. Farther more, the mechanism of ambient gas ionization was investigated. As the result, it was suggested that the main mechanism inducing protecting gas to ionize should be the absorption of the plasma continuum radiation by the gas....
2020-09-13 23:35:02浏览：64
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风机变频改造节能技术
变频改造大大提高了设备的安全运行水平，减少轴承磨损，延长电机等电器设备使用寿命；避免意外停机带来的损失，降低运营成本；进一步提高了设备自动化水平，减轻了员工的劳动强度；降低环境噪音，改善现场工作环境，为企业清洁生产打下了良好的基础。...
2020-09-13 23:35:02浏览：45
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论灌区改造项目的环境影响
通过对灌区运行和汾河灌区改造环境影响分析,提出灌区改造项目的环境影响,关键是要看由于项目的实施,灌区灌溉引水量是否发生变化。...
2020-09-13 23:35:02浏览：43
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2010年我国成人体重自测及体重知晓情况分析
目的 了解我国不同地区成人自我测量体重及体重知晓情况.方法 利用中国慢病监测(2010)项目询问调查及体格测量获得的数据,分析我国18岁及以上成人自我测量体重、体重知晓情况,描述城乡、不同地区、不同性别及年龄人群的分布及差异.结果 我国成人经常测量体重的比例为33.5％；有22.8％的人从未测量过体重,且年龄越大、文化程度越低比例越高；西部农村地区从不测量体重的比例最高,东部城市地区最低.我国成人47.7％的人自报知晓自己体重,但仅有31％的人真正知道自己的体重.年龄越大、文化程度越低,知晓率越低.结论 我国成人自我测量体重、关注体重、掌握实际体重的比例还不高,且存在人群、地区等差异,建议进一步加强人群健康教育和健康促进,大力倡导和支持人人自测体重、知晓体重及维持健康体重....
2020-09-03 16:42:35浏览：25
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采用热重分析法预测PTMG型聚氨酯弹性体的使用寿命
采用预聚体法制备了PTMG-TDI型聚氨酯弹性体,对该聚氨酯进行热重分析实验,采用4种升温速率,结合Arrhenius公式和Kissinger方程研究了体系不同失重阶段的降解活化能.依据实验数据,拟合出材料在失重5％时的降解动力学参数,得到其使用寿命tf(min)与温度T(K)的关系式为Intf=15700/T-30.78,并依此预测该聚氨酯弹性体在不同环境温度下的使用寿命....
2020-09-02 20:01:33浏览：26
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类比法在电动力学教学中的应用
类比法是常用的教学方法，在电动力学中使用得当可以使教学效果事半功倍。针对静电场与静磁场、理想介质与导电介质中平面电磁波的性质以及电磁场的标势与矢势进行了类比，从而使学生加深了对物理内容的理解。...
2020-08-31 10:42:30浏览：26
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嵌岩桩非线性动力学特性
The nonlinear dynamic characteristics of a pile embedded in a rock were investigated.Suppose that both the materials of the pile and the soil around the pile obey nonlinear elastic and linear viscoelastic constitutive relations.The nonfinear partial differential equation governing the dynamm characteristics of the pile was first derived.The Galerkin method Wasusedto simplify the equation and to obtain a nonlinear ordinary differential equation.The methods in nonlinear dynamics were employed to solve the simplified dynamical system,and the time-path curves,phase-trajectory diagrams,power spectrum,the dynamic characteristics of the system were also considered in detail....
2020-08-31 10:42:30浏览：37
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环境作用动力学基础及应用
目的：优化原有的环境作用动力学理论模型。方法在原有环境作用动力学理论模型的基础上，提出环境适应性、环境响应性、变化重复性等3个概念，修改蠕变动力学理论模型的假设2。结果形成了由8个定义、2个假设组成的更加完善的环境作用动力学理论模型。结论新的环境作用动力学理论模型涵盖了蠕变动力学理论模型和原有的环境作用动力学理论模型，应用范围得到大大扩展。...
2020-08-30 18:25:27浏览：22
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飞机下滑对大气紊流的动力学响应
为了仿真大气紊流下的飞机着舰下滑过程中的动力学响应,引入了三维的大气紊流模型并将紊流速度以及紊流速度梯度的影响加入到飞机下滑过程的动力学模型中,建立了过程中飞机的六自由度飞行动力学模型.同时引入了Von Karman大气紊流模型并生成了工程化的紊流风场.在建模基础上,分析了紊流速度和紊流速度梯度对飞机的影响,并采用数值方法仿真了飞机下滑穿越紊流的全过程.结果表明,大气紊流的存在会造成飞机的飞行姿态无法保持稳定,并会最终导致实际着舰点偏离理想着舰点,影响飞机的安全回收....
2020-08-30 18:25:27浏览：31
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某击发机构动力学仿真研究
为了研究击发机构的力学特性，对击发机构零部件进行三维实体建模，考虑拨动子驻栓、发射器推杆和电磁连杆的柔性，利用Hypermesh软件对它们进行模态分析，生成可被动力学分析软件ADAMS调用的模态中性文件，建立击发机构刚柔耦合动力学模型，对击发机构进行了刚柔耦合动力学分析和对击发机构机理分析使用方法与手段，分析结果对于火炮击发机构的设计具有一定的参考价值。...
2020-08-30 18:25:27浏览：31
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SCR反应动力学模拟
NOx是主要的大气污染物之一。目前SCR（选择性催化还原脱硝技术）是最有效、发展最为成熟、应用最多的一种烟气脱硝技术。本文对以V2O5催化剂活性组分、NH3为还原剂的SCR反应进行了动力学模拟，分析了反应动力学中氨氮比、温度对反应的影响；发现了在反应进行的过程中孔道1/3处反应比较剧烈，比较适宜的反应温度为700K左右，随着氨氮比的增加，适宜的反应温度范围越来越小，适宜的氨氮比范围在1.3～1.4之间；随着反应温度的升高，选择性参数越来越小。...
2020-08-30 18:25:27浏览：77
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