接近完美索尼T10数码相机体验

我们在“7月号”杂志上增评测过索尼T30数码相机，当时对它的性能以及效果选赞不绝口，不过T30的“大块头”身材同样让我们印象深刻。曾经可以作为卡片机代言人的T系列在T30身上，体积已经毫无优势可言。不过在最新的T10身上，不仅性能同样出色，而且身材也重新回归了卡片标准。[编者按]     

Gamow—Teller Resonance of 90Zr in a Relaztivistic Approach

We establish the formalism of nuclear spin-isospin excitations,especially the Gamow-Teller resonance in a fully consstent relativistic random-phase approximation.A relativistic form of the Landau-Migdal parameter g‘ is adopted as a residual spin-isospin correlation force.In the non-relativistic limit it reproduces the excitation energy of the giant Gamow-Teller resonance state obtained in the non-relativistic model.The Gamow-Teller resonance for finite nuclei is investigated in a relativistic approach for the first time.It is found that the Ikeda sum rule of 90Zr is quenched about 8% in the Hartree as well as the correlated strengths due to the poles of the negative Dirac states at energies above 1 GeV.     

瑞萨电子推出低功耗RL78／L1C LCD微控制器

瑞萨电子近日宣布推出40款全新的RL78／L1CMCU，这些新产品将液晶显示功能、USB功能以及12位模数转换器集成在一块芯片上，扩展了RL78微控制器产品线。全新的RL78／L1C MCU可连接多种多样的传感器，包括压力传感器、温度传感器和接近传感器，非常适用于便携式显示器和便携式医疗设备应用，如血压和血糖监护仪。     

创造性中最接近对比文件的选择

在创造性的评述中,选择最接近的对比文件是第一步,它可能不是一个,也不是唯一的,如何从众多对比文件中确定最接近的对比文件至关重要.从创造性的定义出发,以案例为支撑,阐述了如何选择最接近的对比文件,以期对业内人员提供帮助.     

In Situ Tests of Multiwalled Carbon Nanotubes with Strength Close to Theoretical Predictions

Using MEMS technology and transmission electron microscopy we show experimentally multiwalled carbon nanotubes with a mean fracture strength of larger than 100 GPa, which exceeds the earlier observations by a factor of approximately 3. These results are in excellent agreement with quantum-mechanical estimations. This performance is made possible by omitting chemical treatments from the sample preparation process, thus avoiding the formation of defects. High-resolution imaging is used to directly determine the number of fractured shells and the ehirality of the outer shell. Electron irradiation at 200keV for 10, 100 and 1800s lead to improvements of the maximum sustainable loads by factors of 2.4, 7.9 and 11.6 compared with non-irradiated samples of similar diameter. This effect is attributed to crosslinking between the shells. This procedure is a cost effective way of customizing the properties of multiwall nanotubes for many applications of interest ranging from nanocomposites to nanodevices.     

靠光学传感器自主行驶的无人车概念接近实现

由美国DARPA主持的无人地面战车项目计划于2015年完成。在该计划进行了三分之一的时候，2005年，DARPA组织了一次初样车竞赛。参赛的有23种车，地点在Mojave沙漠中一个干涸的湖底。规定了比赛的起点、终点和中间检测点，而具体途径则由赛车自主选定。赛车要沿着曲折路线，穿过乱石冈，全程超过130英里（合208km）。     

包络半群与拓扑动力学中的接近关系

运用包络半群的理论，对接近关系中一个重要定理给出了一个简单证明．作为这一定理的应用，我们得到接近关系可乘性的一个结果．并且对另一种接近关系，也得到一个结果．这两个定理减弱了Ｃｌａｙ在这一领域中两个定理的条件．     

接近开关的原理及应用

接近开关是一种无需与运动部件进行机械接触就可以进行检测的位置开关,这种接近开关不需要机械接触和施加任何压力即可动作,从而驱动执行机构或给采集装置提供信号.文中简要介绍了接近开关的工作原理和分类,给出了接近开关在自来水厂清污机以及刮沙机上的应用实例和具体方法.