汽油气相色谱模拟馏程的应用

介绍了用AC8612气相色谱仪对六个汽油组分馏程分析的应用情况,结果表明:该方法的重复性和准确性都较好,与D86相比,结果满足方法的再现性要求,但对于差值大于3℃的点,应定期进行修正,以使结果更准确,该方法用于炼油厂各装置汽油组分馏出口的日常质量监测分析,可以提高分析效率并减少劳动强度。     

一种磁控管用扼流线圈仿真设计

采用电路仿真软件仿真滤波组件S参数曲线,观察曲线随器件参数的变化;介绍利用三维全波电磁仿真软件HFSS简化设计流程的方法,并与测试结果对比。结果表明:利用3D仿真软件在满足器件设计精度的同时可以简化线圈的设计流程。     

翅果油超临界CO2流体萃取工艺优化及其不同提取方法的比较

对翅果油的超临界CO_2流体萃取工艺条件进行研究。在单因素试验的基础上,以萃取压力、萃取温度、萃取时间和原料粒度为影响因素,以翅果油得率为指标,采用正交试验优化工艺条件。比较了浸出法、超临界CO_2流体萃取法、冷榨法和热榨法4种不同提取方法对翅果油得率和微量活性成分的影响。结果表明:超临界CO_2流体萃取翅果油最优工艺条件为萃取压力30 MPa、萃取温度50℃、萃取时间150 min、原料粒度80目,此条件下翅果油得率为(28. 32±1. 15)%; 4种提取方法中,浸出法的翅果油得率、VE及甾醇含量最高,其次是超临界CO_2流体萃取法,除热榨法的翅果油角鲨烯含量最高外,压榨法的其他指标均最低。     

Cryptographic Lightweight Encryption Algorithm with Dimensionality Reduction in Edge Computing

Edge Computing is one of the radically evolving systems through generations as it is able to effectively meet the data saving standards of consumers, providers and the workers. Requisition for Edge Computing based items have been increasing tremendously. Apart from the advantages it holds, there remain lots of objections and restrictions, which hinders it from accomplishing the need of consumers all around the world. Some of the limitations are constraints on computing and hardware, functions and accessibility, remote administration and connectivity. There is also a backlog in security due to its inability to create a trust between devices involved in encryption and decryption. This is because security of data greatly depends upon faster encryption and decryption in order to transfer it. In addition, its devices are considerably exposed to side channel attacks, including Power Analysis attacks that are capable of overturning the process. Constrained space and the ability of it is one of the most challenging tasks. To prevail over from this issue we are proposing a Cryptographic Lightweight Encryption Algorithm with Dimensionality Reduction in Edge Computing. The t-Distributed Stochastic Neighbor Embedding is one of the efficient dimensionality reduction technique that greatly decreases the size of the non-linear data. The three dimensional image data obtained from the system, which are connected with it, are dimensionally reduced, and then lightweight encryption algorithm is employed. Hence, the security backlog can be solved effectively using this method.     

Mg-5Y-3Sm-0.8Ca-0.5Sb合金的高温蠕变行为

采用蠕变实验和理论计算,研究了时效态Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金在250～300℃和50～70 Pa条件下的蠕变行为。结果表明,该合金具有良好的抗高温蠕变性能,其在300℃和70 MPa下的稳态蠕变速率为3. 28×10-8s-1。在50～70 MPa的应力下,当温度由250℃升到300℃时,应力指数由2. 30变为3. 22;在250～300℃的温度下,当应力由50 MPa升到70 MPa时,蠕变激活能由65. 4 kJ/mol变为81. 0 kJ/mol。     

塔河奥陶系隐蔽溶洞体地震精细识别

实际钻探结果表明，塔河奥陶系发育T₇⁴强轴屏蔽型溶洞体和强“串珠”屏蔽型溶洞体，部分溶洞体产能较高，初步显示了较大的开发潜力。由于该类储集体埋深大（超过5300m）、地震资料主频较低（约28Hz），地震分辨率为30m（约1/4波长）；同时小型溶洞体尺度小，地震响应较弱，地震异常特征不明显，预测强“串珠”储集体的方法明显不适用，亟需加强预测方法研究。为此，在钻、测井资料解释基础上，针对T₇⁴强轴屏蔽型溶洞体，首次采用主成分分析技术克服强子波匹配不足或匹配过度等稳定性问题，有效剥离T₇⁴强干扰，增强隐蔽缝洞体地震响应特征；针对强“串珠”屏蔽型溶洞体，采用低频模型优化的地质统计学反演去除强“串珠”子波旁瓣干扰，以增强隐藏在强子波旁瓣中的缝洞体的辨识度，精细预测隐蔽溶洞体。结果表明，对溶洞体的纵向辨识能力明显提高，可刻画8m厚的溶洞体，反演结果与钻测井符合率达83%，可靠性较高。     

降低焦炭塔操作压力对焦化过程的影响

考察了降低焦炭塔操作压力对延迟焦化过程的影响。中试结果表明：在炉出口温度、注汽量、循环比等操作条件基本一致的情况下，当焦炭塔的操作压力由0.195MPa降低到0.115MPa时，气体和焦炭的产率降低，液体产品收率提高且表现在焦化蜡油收率的提高上，二者分别提高了2.03百分点和4.64百分点；随着操作压力的降低，焦化汽油和焦化柴油的性质基本一致，但焦化蜡油性质变差，主要表现在密度、残炭、沥青质、氮含量及金属等均有所升高，95%馏出温度提高14℃；石油焦的挥发分呈降低趋势。