新型电致发光材料聚对苯乙炔的制备

报道了新型电致发光材料聚对苯乙炔的制备过程和有关测试结果。发现恒重后的双锍盐含有二个结晶水这一新现象，并确认最终产物为聚对苯乙炔。     

Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst.

The photocatalytic splitting of water into hydrogen and oxygen using solar energy is a potentially clean and renewable source for hydrogen fuel. The first photocatalysts suitable for water splitting, or for activating hydrogen production from carbohydrate compounds made by plants from water and carbon dioxide, were developed several decades ago. But these catalysts operate with ultraviolet light, which accounts for only 4% of the incoming solar energy and thus renders the overall process impractical. For this reason, considerable efforts have been invested in developing photocatalysts capable of using the less energetic but more abundant visible light, which accounts for about 43% of the incoming solar energy. However, systems that are sufficiently stable and efficient for practical use have not yet been realized. Here we show that doping of indium-tantalum-oxide with nickel yields a series of photocatalysts, In(1-x)Ni(x)TaO(4) (x = 0-0.2), which induces direct splitting of water into stoichiometric amounts of oxygen and hydrogen under visible light irradiation with a quantum yield of about 0.66%. Our findings suggest that the use of solar energy for photocatalytic water splitting might provide a viable source for 'clean' hydrogen fuel, once the catalytic efficiency of the semiconductor system has been improved by increasing its surface area and suitable modifications of the surface sites.     

基于多源浮动车数据融合的道路交通运行评估

针对当前出租车浮动车数据覆盖范围和数据质量不足的问题,在现有数据特征分析的基础上引入百度手机导航和公交车浮动车导航数据,面向道路运行评估和拥堵管理提出了基于出行时间的交通运行指数算法和一种基于出租车、百度、公交车多源浮动车数据融合的道路交通运行评估方法,构建了多源数据融合规则和融合算法.以深圳为例进行了融合效果分析,结果表明所提出的多源数据融合方法效果显著,很大程度上提高了融合结果精度、数据覆盖率、数据可靠性和数据样本量,最后提出了主要应用方向和初步应用效果,能够为国内外城市开展交通运行评估工作提供借鉴.     

关于建立区域施工平面控制网几个问题的探讨

文中就施工平面控制网的等级确定 ,以及如何选择合适的高程抵偿面使投影变形值最小 ,进行细致的分析与探讨 ,总结出各类工程建筑限差与拟建网的精度配比关系 ,推证出最佳抵偿高程面之高程 ,对于工程建网具有一定的指导意义。     

应用马尔可夫理论对市场进行预测与决策

阐述了马尔可夫决策理论中的最基本分析方法——系统状态转移概率矩阵决策法 ,指出这种决策分析法能有效地对市场作出预测与决策 ,特别对于某些预测问题 ,应用此法的效果比用其他一些经典预测法所得的结果更优 .对美国柯达、日本富士、中国乐凯三家公司的产品占有率进行了预测与决策     

基于Web的虚拟数控系统的研究与开发

基于服务器／客户模式的的虚拟数控系统体系结构，讨论了虚拟数控系统的建模技术和基于VRML的实现方法，并指出虚拟数控机床的建模是虚拟数控加工过程仿真的实现关键．利用VRML语言、分布式对象技术和Java技术开发和建立了基于Web环境的虚拟数控系统原型。并对系统的开发平台进行了分析和介绍，同时给出了系统的运行实例．研究表明，所开发的系统是可行的和合理的．     

乳腺组织的位相衬度成像

将位相村度成像用于乳腺肿瘤的结构研究后,发现:正常乳腺组织的吸收图像的清晰度比较高,原因是正常乳腺组织比较致密,对于对X射线的吸收相对较强。而位相衬度成像在分辨肿瘤组织内部结构方面的优势是比较明显的,能够清晰地显示出乳腺组织中的一些精细结构,并可以反映出正常组织、良性肿瘤组织和癌变组织结构的特异性。在位相衬度成像中,图像的村度是与样品到探测器的距离有关的,在不同样品到探测器的距离下,位相村度成像的分辨率是不同的。根据衬度传递函数(CTF),可以估计出乳腺癌组织中的钙化尺度在30μm左右。     

SoC处理器的时钟生成器：电路和体系结构

本书涵盖了面向SoC（System　on　Chip，片上系统）处理器的集成综合器电路设计的论题，采取了一种更为全局的设计观念来考察电路级和体系结构级的设计空间。书中的论述十分广泛，而且包括电路理论和锁相环反馈控制理论的综述。在电路级方面，讨论包括深亚微米数字CMOS过程的低功耗模拟设计、供电噪声效应、设备噪声；在体系结构级方面的论述，涵盖了连续时间和离散时间模型的锁相环分析，以及锁相行为的细节分析。还有一些章节对特定的时钟生成器模块做了电路级和系统结构级的深入描述，其中包括高供电噪声屏蔽的锁相环电路、体系结构和数字锁相环体系结构，考察了为离散时间模拟部件产生低失真采样时钟的方法。这里所说的锁相环包括希格马．代尔塔N分锁相环、直接数字综合（DDS、Direct　Digital　Synthesis）技术和锁相环的非常规应用。本书讨论的面向测试的设计（Dvr、Design　for　Test），其中包括锁相环的精确测量滤波器方法和嵌人式测试（BIST、Built—in—self-test）技术。     

A role for mitochondria in NLRP3 inflammasome activation

An inflammatory response initiated by the NLRP3 inflammasome is triggered by a variety of situations of host 'danger', including infection and metabolic dysregulation. Previous studies suggested that NLRP3 inflammasome activity is negatively regulated by autophagy and positively regulated by reactive oxygen species (ROS) derived from an uncharacterized organelle. Here we show that mitophagy/autophagy blockade leads to the accumulation of damaged, ROS-generating mitochondria, and this in turn activates the NLRP3 inflammasome. Resting NLRP3 localizes to endoplasmic reticulum structures, whereas on inflammasome activation both NLRP3 and its adaptor ASC redistribute to the perinuclear space where they co-localize with endoplasmic reticulum and mitochondria organelle clusters. Notably, both ROS generation and inflammasome activation are suppressed when mitochondrial activity is dysregulated by inhibition of the voltage-dependent anion channel. This indicates that NLRP3 inflammasome senses mitochondrial dysfunction and may explain the frequent association of mitochondrial damage with inflammatory diseases.     

Depositional history of the early part of the Jurassic succession on the Rajasthan Shelf, western India

Part of the lowermost deposits of the Triassic to Earlymid Jurassic (up to Bajocian) sedimentary succession spread across the Rajasthan shelf on the western part of the Indian craton is found in the Jaisalmer Basin east of Jaisalmer with the best exposed sections along the Jodhpur-Jaisalmer Highway. Based on lithostratigraphic characteristics, the succession is divided into four: Odania and Thaiat members, Lathi Formation; and Hamira and Joyan members, Jaisalmer Formation. Six facies are defined from microfacies, sedimentary structures, biotic components and depositional environments: (1) ferruginous, pebbly, cross-bedded sandstone—high-energy, fluvial; (2) cross-bedded, poorly sorted, fossil wood-bearing sandstone—highenergy, terrestrial, with high influx of sediment and warm and humid climate; (3) cross-bedded to rarely bioturbated, alternating silt to fine-grained sandstone—fluctuating sedimentation rates and energy—nearshore, mesohaline embayment to lagoonal; (4) partly bioturbated, storm-dominated, mixed siliciclastic-carbonate facies—fully marine; (5) low angle cross-laminated, silt to fine-grained sandstone—nearshore shallow water, above fair weather wave base; and (6) thick rudstones with mega-ripples and reworked coral heads-storm deposits representing the peak of first major marine transgression across the basin.