基于网络安全维护的计算机网络安全技术运用

随着我国计算机网络技术不断发展,计算机网络安全问题也得到了社会各个阶层的关注.基于此,本文重点探究影响计算机网络安全的主要因素,进而提出计算机网络安全技术的应用.     

FBG Temperature and Pressure Sensing System for Hot Water Pipeline of Petrochemical Factory

A spatial and wavelength division multi- plexing fiber Bragg grating （FBG） sensing system is reported for monitoring the temperature and the pressure （T-P） of hot water pipeline in petrochemieal factory. The FBG sensing system has 72 channels independently, and it provides the capability to monitor large number sensors at same time. A resolution of 0.1℃ and 0.01 MPa with a measurement bandwidth of 150 Hz has been achieved.     

基于ARM的矿井下漏电保护装置的研究

针对当前矿井下漏电保护问题,设计了以ARM作为核心的矿井下电网的漏电保护装置,该装置可以解决矿井下总馈电开关和分支馈电开关的漏电保护问题,同时改善了漏电保护装置的动作性能,弥补了过去许多保护装置的不足,应用价值很高。     

带有热沉结构的全镂空光读出红外焦平面阵列

A substrate-free optical readout focal plane array(FPA) operating in 8-12μm with a heat sink structure (HSS) was fabricated and its performance was tested.The temperature distribution of the FPA with an HSS investigated by using a commercial FLIR IR camera shows excellent uniformity.The thermal cross-talk effect existing in traditional substrate-free FPAs was eliminated effectively.The heat sink is fabricated successfully by electroplating copper,which provides high thermal capacity and high thermal conductivity,on the frame of substrate-free FPA. The FPA was tested in the optical-readout system,the results show that the response and NETD are 13.6 grey/K(F / # = 0.8) and 588 mK,respectively.     

Simulation and Experimental Study on Thermal Conductivity of Nano-Granule Porous Material Based on Lattice-Boltzmann Method

Nano-porous materials have excellent thermal insulation performance,whose microstructure and physical properties,however,have great influence on the thermal conductivity.To accurately describe the stochastic phase distribution,a random internal morphology and structure generation-growth method,called the quartet structure generation set(QSGS),has been proposed in the present paper.The model was then imported into lattice Boltzmann algorithm as a fully resolved geometry and used to investigate the effects on heat transfer at the nanoscale.Furthermore,a three-dimensional Lattice Boltzmann method(LBM)D3Q15 was adopted to predict the nano-granule porous material effective thermal conductivity.This ideal method provided a significant advantage over similar porous media methods by directly controlling and adjusting of granule characteristics such as granule size,porosity and pore size distributions and studying their influence directly on thermal conductivity.To verify the accuracy of the proposed model,some experiments based on guarded hot plate meter(GHPM)were conducted.The results indicated that the simulation results agreed well with the experimental data and references values,which illustrated that this method was reliable to generate the microstructure of nano-granule.What’s more,the effects of pressure,core distribution probability,cd and density were investigated.There existed an optimal density(about 120 kg·m^-3)making the effective thermal conductivity being minimum and an optimal core distribution probability about cd=0.1 making the uniformity being the best.In addition,the present approach is applicable in dealing with other porous materials as well.     

催化裂化汽油在LBO-A/LBO-16催化剂上的芳构化

以催化裂化汽油为原料,LBO-A催化剂和LBO-16催化剂混合物(二者质量比为1∶1)为芳构化催化剂,在小型固定流化床反应器和中型提升管反应器上进行了芳构化反应性能研究。结果表明,在2种反应器中,产品液体收率大于89%,改质汽油烯烃体积分数下降20个百分点以上,芳烃体积分数增加10个百分点以上,产品分布和汽油质量得到改善。在小型固定流化床中的芳构化改质汽油中,烯烃体积分数下降幅度及芳烃体积分数增加幅度大于在中型提升管反应器上的。     

宣龙坳陷新元古界下马岭组沉积相特征研究

河北省怀来县赵家山地区新元古界青白口系下马岭组为一套碎屑岩沉积,主体岩性为灰绿色-灰黑色页岩及灰色含铁粉-细砂岩,该组地球化学特征明显,其值随沉积相带发生明显的规律变化;通过对该地区野外仔细观察、测量,结合室内薄片资料和地球化学分析,认为该地区下马岭组可划分为滨岸和浅海陆棚2个相带及近滨、过渡带以及滨外陆棚3种亚相.并...     

重油悬浮床加氢裂化非负载型环烷酸镍催化剂的初步研究

采用皂化反应和复分解反应合成了适用于重油悬浮床加氢裂化的非负载型环烷酸镍催化剂,并通过光学显微镜、激光粒度仪、XRD和SEM对该催化剂硫化后的性质进行了表征。结果表明,环烷酸和NaOH摩尔配比为1∶0.995、皂化反应温度为95℃,N iSO4溶液浓度为10%、复分解反应时间为2 h,复分解反应温度为90℃时,合成的催化剂中镍金属含量最高。通过釜式反应评价了该催化剂在委内瑞拉380号燃料油悬浮床加氢裂化反应中的催化效果,结果表明,该催化剂具有较好的抑焦效果。     

新增探明储量技术采收率主控因素

在申报探明可采储量时，关键是采收率的取值，由于油藏处在勘探评价或开发初期，受资料所限，采收率只能是应用经验公式法、经验取值法、类比法和数值模拟法求取，然后综合确定一个值，在求取过程中关键是明确此阶段采收率的主控因素，从而相对准确地求取采收率值。通过分析，明确了探明储量技术采收率的主控因素为油藏驱动类型、储层渗透率、储层非均质性、原油地下粘度及井网密度，为此阶段科学评价采收率奠定了基础。