蛋白质芯片及其分析应用新进展

蛋白质芯片是一种快速、高效、高通量的蛋白质组研究新技术。目前,它已成为人们研究的热点之一。本文就近年来蛋白质芯片及其分析应用新进展做一简要的评述。     

用于290～450 nm光谱测量的平场光谱仪

介绍了以自扫描光电二极管阵列(SPD)为探测元件的平像场光谱仪。该谱仪采用车尔尼—特纳(Czerny—Turner)正交型结构,光谱分辨力为0．5nm/pixel。介绍了使用标准直流汞灯和标准石英卤素钨灯进行波长定标和辐射定标方法。并利用该平场光谱仪对290～450nm太阳紫外／大气光谱进行了测量,给出了测量结果。讨论了探测器的特性;为抑制温度对测量结果的影响,探测器两端侧某些像元被物理屏蔽,设置其为背景参考像元即哑元,利用哑元进行实时背景扣除方法来抑制温度漂移、暗电流、暗噪声等因素对测量精度的影响。根据仪器结构讨论了狭缝对谱线的影响,给出了狭缝宽度和谱线宽度的对应关系,并对仪器谱面上的相对测量误差进行了分析。     

光读出热成像焦平面阵列的光学与热学设计

针对提出的一种光读出热成像系统 ,对其焦平面阵列的光学和热学特性进行了详细的分析 ,主要涉及法布里珀罗微腔两个反射面的反射率、可动微镜的温度响应、噪声等效温差以及响应时间四个方面。理论分析表明 :当法布里珀罗微腔两个反射面的反射率为 0 .5时 ,能获得较大的输出反射光强和反衬度 ,并保证了输出反射光强尽可能地随微镜位移在 0～λ/ 4范围内呈线性变化 ;可动微镜的温度响应值可达 2 .0 5× 10 -4,噪声等效温差为19.5mK ,热响应时间为 1.5 4× 10 -3 s。     

B值行独立随机元阵列的完全收敛性

本文研究了B值行独立的随机元阵列完全收敛性，在对Banach空间B没有p型的要求下，根据Banach空间上的A．de Acosta．不等式与Hoffman-JФrgensen不等式，得到了几个有意义的结果．     

A regularization method for the numerical solution of elliptic boundary control problems with pointwise state constraints

A Lavrentiev type regularization technique for solving elliptic boundary control problems with pointwise state constraints is considered. The main concept behind this regularization is to look for controls in the range of the adjoint control-to-state mapping. After investigating the analysis of the method, a semismooth Newton method based on the optimality conditions is presented. The theoretical results are confirmed by numerical tests. Moreover, they are validated by comparing the regularization technique with standard numerical codes based on the discretize-then-optimize concept. The authors acknowledge support through DFG Research Center “Mathematics for Key Technologies” (FZT 86) in Berlin.     

行内独立随机变量组列的完全收敛性

研究了B值随机元阵列的完全收敛性质.主要通过使用一些关于B值独立随机变量的矩不等式和E tem and i不等式,把相关文献中的主要结果从实值情况推广到了p(1 q 2)型的Banach空间中,同时把他们的定理条件进行了极大的简化.此外进一步弱化定理的条件,给出了其它形式的完全收敛定理.     

Sequence characterization of Riordan arrays

In the realm of the Riordan group, we consider the characterization of Riordan arrays by means of the A- and Z-sequences. It corresponds to a horizontal construction of a Riordan array, whereas the traditional approach is through column generating functions. We show how the A- and Z-sequences of the product of two Riordan arrays are derived from those of the two factors; similar results are obtained for the inverse. We also show how the sequence characterization is applied to construct easily a Riordan array. Finally, we give the characterizations relative to some subgroups of the Riordan group, in particular, of the hitting-time subgroup.     

An introduction to balanced sequential arrays on the square grid

Plants grown in large numbers for commercial purposes are usually set out on a regular grid, triangular, square or hexagonal, or possibly a rectangular grid. We need to understand their behaviour when they compete with each other for light, water and nutrients. In a greenhouse, there may be a lamp over each plant, half the plants having their lamps on and half off. The intensity of light falling on any particular plant is determined mainly by whether its own lamp is on, next by the number of its nearest neighbours whose lamps are on, and perhaps also by the number of its second-nearest neighbours whose lamps are on. Such arrays are also used to study competition among different types of plants and, with some extra restrictions, to design field layouts as well. The problem of constructing suitable arrays was introduced in [CORMACK, R. M.: Spatial aspects of competition beween individuals. In: Spatial and Temporal Analysis in Ecology (R. M. Cormack and J. K. Ord, eds.), International Co-operative Publishing House, Fairland, Maryland, USA, 1979] and discussed in [GATES, D. J.: Competition between two types of plants with specified neighbour configurations, Math. Biosci. 48 (1980), 195–209]. Here we consider only the square grid. To Alex Rosa, on the occasion of his seventieth birthday     

通过磁控溅射金属钛生长金红石型二氧化钛纳米片阵列应用于钙钛矿太阳能电池

本文首次通过磁控溅射方法,在FTO表面溅射一层Ti金属层,结合水热反应,原位生长TiO₂纳米片阵列（TiO₂ NSAs）. 经过退火处理,Ti金属层转变为致密的TiO₂层,因此基于此方法制得的金红石型TiO₂ NSAs与FTO基底具有很强的结合力. 与通过原子层沉积 (ALD) 以及悬涂 (SC) 法所得的另外两种TiO₂致密层生长的TiO₂ NSAs对比发现,基于本文所述方法制备的TiO₂ NSAs作为支架层的钙钛矿太阳能电池具有最佳性能. 上述结果主要是由于该TiO₂ NSAs无明显缺陷,并且在TiO₂ NSAs/TiO₂致密层/FTO界面接触很好. 值得注意的是,通过优化实验条件,基于此种TiO₂ NSAs的钙钛矿太阳能电池的最高光电转换效率可达11.82%.     

基于VHF-FM微波段的室内人体探测方法

提出一种基于甚高频调频广播(VHF-FM)微波段的室内人体探测方法,该方法是根据VHF-FM天线阵列接收机接收到的数据做空时相关处理得到信号子空间特征向量,并将信号子空间特征向量映射为相应的代价值进行探测.在静态无人,室内环境没发生改变时,代价值基本没有太大变化;而当有人进入,室内环境发生改变时,代价值会发生明显的变化.研究结果表明:该方法能够很好地区分室内静态无人环境和动态有人环境,且不容易受到噪声环境的影响,具有稳定、准确的探测性能.