裂解汽油一段选择加氢催化剂研究进展

概述了裂解汽油一段选择加氢钯系和镍系催化剂在我国的工业化应用情况,并从载体材料、制备工艺优化以及添加助剂改性3个方面,综述了此系列钯系和镍系催化剂在国内外的研究进展,预测了今后需持续注重及改进的相关方面;最后展望指出,针对特定原料性质开发与之相匹配的选择加氢工艺及其配套专用催化剂,将是未来裂解汽油一段选择加氢催化剂研发的主方向。     

青海原油分子组成特征及其常压渣油含氮化合物加氢转化规律

利用气相色谱和高分辨质谱等手段分析了格尔木炼油厂的青海原油、常压渣油及渣油加氢产物的分子组成,发现青海原油中的硫、氮化合物具有特殊的分子组成,解释了该原油生产的催化裂化汽油中硫含量异常偏高及其常压渣油加氢脱氮率低的化学机理：含硫化合物富含噻吩结构单元,催化裂化过程中小分子噻吩在汽油中实现富集;氮化物烷基侧链较长,形成较强的空间屏蔽,抑制了加氢过程中氮的脱除。常压渣油加氢实验结果表明：高温裂化反应有利于提高常压渣油中氮元素的脱除率;常压渣油加氢过程中具有高缩合度的小分子含氮化合物被优先脱除,缩合度高的大分子氮化物发生芳环加氢反应形成部分饱和的中性氮化物,但芳环加氢反应仅发生在与中性氮化物氮原子未直接共轭的芳环上。     

川中古隆起北部蓬莱气区多层系天然气勘探突破与潜力

近3年,四川盆地相继在川中古隆起北斜坡上震旦统灯影组二段和四段、下寒武统沧浪铺组一段、二叠系茅口组二段取得勘探突破,继安岳气区发现之后形成了新的万亿立方米级大气区——蓬莱气区。受大型张性走滑断裂、古裂陷槽、台缘带联合控制,蓬莱气区纵向上发育多层系规模化烃源岩、储集层及断控岩性圈闭;良好的"源-储"配置和垂向输导通道促进了多层系油气高效充注;"古隆今斜"的构造演化保证了油气高效汇聚;多层系直接盖层和区域盖层的发育为油气提供了良好的保存条件。得益于成藏要素在时间和空间上的良好配置,蓬莱气区震旦系—二叠系形成了特有的斜坡区深层—超深层、多层系、海相碳酸盐岩立体成藏模式——"立体供烃、立体成储、立体输导、早油晚气、立体成藏"。蓬莱气区多层系天然气勘探突破不仅大大拓宽了四川盆地深层—超深层天然气勘探领域,也证实了在历经多期构造运动后,古隆起斜坡部位的超深、超老地层仍具有形成规模性天然气聚集的潜力,对进一步深化四川盆地超深层天然气勘探具有重要指导意义。     

金属矿山全尾砂单管输送胶固充填新工艺研究

本文叙述了一种金属矿山全尾单管输送胶固充填新工艺.该工艺用全水胶固材料作固化剂,全尾砂作骨料;浓度60%～70%的充填料浆单管路自流输送到井下采场;料浆静置40分钟后初凝,不脱水便可凝结为固态充填体,12小时后可承载.该新工艺解决了胶结充填中高浓度料浆输送困难、中浓度料浆需脱水等难题,且工艺简单,效益好,有推广应用价值.     

乳化炸药水相间溶解罐搅拌机构的研制

本文论述了南芬露天铁矿新火药加工厂乳化炸药水相间溶解罐搅拌装置的主要参数确定、搅拌器布置方式和结构特点，为乳化炸药生产线主要配套设备的设计提供了参考。     

QoS routing based on mobile agent for LEO satellite IP networks

Current quality of service (QoS) routing schemes for low earth orbit (LEO) satellites IP networks either neglect the varying population density or fail to guarantee end-to-end delay. As a remedy, QoS routing protocol based on mobile agent (QoSRP-MA) is proposed. QoSRP-MA is a source-based routing protocol. Once connection requests arrive, QoS mobile agents are dispatched from ingress satellite to explore routes, which migrate using satellite routing tables. Upon arriving in egress satellite, QoS mobile agents migrate back towards ingress satellite to reserve bandwidth. To construct satellite routing tables, load balancing routing algorithm based on mobile agent (LBRA-MA) is presented. In LBRP-MA, at regular intervals mobile agents launched on all satellites migrate autonomously to evaluate path cost and update routing tables. Moreover, path cost between source and destination is evaluated considering satellite geographical position as well as inter-satellite link (ISL) cost. Furthermore, ISL congestion index is considered to update routing table. Through simulations on a Courier-like constellation, it shows that QoSRP-MA can achieve guaranteed end-to-end delay bound with higher throughput, lower connection failing ratio and signaling overhead compared to high performance satellite routing (HPSR) scheme.     

A highly efficient tris-cyclometalated iridium complex based on phenylphthalazine derivative for organic light-emitting diodes

A novel ligand 9-(4-(4-chlorophenyl)phthalazin-1-yl)-9H-carbazole (HCPC) was designed and prepared, and the corresponding tris-cyclometalated iridium(III) complex Ir(CPC)₃ was readily synthesized by the reaction of the ligand with IrCl₃ · 3H₂O at 80 °C for 20 h. A highly efficient organic light-emitting device using this complex as a dopant was obtained. The device fabricated by solution process showed a maximum luminance of 2948 cd/m² at a current density of 115.6 mA/cm² and a maximum external quantum efficiency of 20.2% at 0.18 mA/cm².     

基于Struts框架的Web系统设计与实现

Struts框架具有组件的模块化、灵活性和重用性等优点,同时简化了基于MVC的Web应用程序的开发。文中将Struts框架技术运用到电子商务Web系统的设计与开发中,有效地分离出系统的界面显示和业务逻辑处理,降低了系统开发及维护代价,同时大大提高了系统的可重用性。     

Neurofeedback Treatment of College Students' Test on Anxiety, Depression, Personality, and Mood

Biofeedback is used to treat the mental diseases of college students, such as test anxiety, depression, personality, and mood. Anxiety of the colleague students was first tested by test anxiety scale （TAS） and then treated by biofeedback. After getting the biofeedback treatment, the students＇ TAS scores, blood volume pulse, and skin conductance were decreased, especially, their TAS scores dropped markedly. Meanwhile, the level of EEG （61 rhythm/a rhythm） and peripheral temperature increased observably. Then, neurofeedbaek （β1 rhythm/α rhythm） was applied to treat students＇ depression, personality, and mood. As a result, these three kinds of symptoms got alleviated. And their therapeutic effects based on neurofeedback were more stable, durative and less reerudescent.     

基于时空运动信息的药液异物自适应分割算法

为了能够从药液视频序列图像中准确地提取出运动异物对象,提出一种基于帧差图时空运动信息的药液异物模糊自适应阈值分割算法。首先通过4帧序列图像的隔帧差分得到2幅差分图并分别划分为5×5的图像块;然后计算对应图像分块的4阶矩以实现异物的运动信息提取;最后采用自适应阈值依据帧差图对应图像块的4阶矩之差实现运动异物的分割,并经过形态学处理去除掉噪声和空洞。为使阈值能够跟随图像块灰度变化,阈值的调整采用模糊推理依据对应块灰度均值差和方差变化自适应实现。实验及实际测试结果表明,本文所提算法较好地满足了低对比度和局部光照变化的药液异物实时检测要求,是一种实用有效的图像分割方法。