发射性的

Analysis shows that the accumulative excess events of steady 3TeV gamma ray emissions from Crab Nebula was increasing stably and the statistical significance reached 3.2σ, whereas no statistical significant evidence of steady 10TeV and 30TeV ga...

分析表明，来自CrabNebula的 3TeVγ射线的累积信号事例数显示了稳定增长的趋势，显著性达到了 3.2σ，但没有发现 1 0TeV和 30TeVγ射线稳定发射的迹象

Analysis shows that the accumulative excess events of steady 3TeV gamma ray emissions from Crab Nebula was increasing stably and the statistical significance reached 3.2σ,whereas no statistical significant evidence of steady 10TeV and 30TeV gamma ray emissions was found.

分析表明，来自Crab Nebula的3TeVγ射线的累积信号事例数显示了稳定增长的趋势，显著性达到了3.2σ，但没有发现10TeV和30TeVγ射线稳定发射的迹象。

the paper introduces long curtate new unequal ofdm system.adopts long curtate unequal benefit to be not to require that the second order adding the circulation prefix,being therefore likely to lead into period stationarity,making use of signal therefore in launching an array,counting characteristic property realizing blind estimation of route.this technology includes three kinds of method : subspace decomposition,correlation matching,and maximum likeewise,monte carlo simulation show that whentheeb/no is low,function is better than the other kinds of method.

摘 要：提出一种采用不等长分组新的ofdm系统。采用不等长分组的好处是不需要加循环前缀就能在发射序列中引入周期平稳性，因此，可利用信号的二阶统计特性实现信道盲估计。信道盲估计主要分子空间分解、相关拟合和最大似然三种方法。结合monte carlo仿真表明，在信噪比较低时，结合子空间分解方法计算出的误码性能比其余两种方法好。

The results show that the influence of accumulation of targets loss must be considered when evaluating operational effectiveness for fake targets antagonizing ARM and their vulnerability should be reduced, their eradiation power should be improved, and reasonable configuration should be adopted when the number of fake targets is increased to improve the operational effectiveness.

研究结果表明：在评估假目标诱骗对抗ARM的效能时，必须考虑目标损失积累的影响；为提高诱骗效能，在增加假目标数量的同时，应降低其易损性，提高发射功率，并采用合理的布局方案。

The results show that the heterogeneous characteristic has a great effect on the rock failure,the more the homogeneousness,the fewer the crack branches and the more concentrated acoustic emissions.

结果表明：材料的非均质性对其破坏有重要的影响，均质度越高，破坏过程中的分支裂纹越少，声发射也越集中。

The impregnated cathodes with sub-micron scandia doped tungsten matrix exhibited excellent emission property. The current densities of more than 30 A/cm^2 at 850℃ b could be obtained, and the emission homogeneity was improved with the ordinary scandate cathode.

湿法冶金方法制备的亚微米结构钪钨基扩散阴极850℃时电流密度可达47A/平方公分，且阴极表面的发射均匀性较普通钪酸盐阴极有明显的改善。

On the basis of the avidity of lesional macrophages for polysaccharide-containing supramolecular structures such as nanoparticles, we have developed a new positron emission tomography agent with optimized pharmacokinetics to allow in vivo imaging at tracer concentrations.

在伤害性巨噬细胞对含多糖的超分子结构如纳米粒子的亲和力的基础之上，我们开发了一种新的正电子发射断层成像剂，该成像剂在示踪物浓度水平进行体内成像方面具有最佳药代动力学特征。

Since there exists some disadvantages such as poor mechanic properties and much higher burning rate pressure exponents (?1) in the fundamental formulations, this work is devoted to the improvements of combustion characteristics and mechanic properties of LOVA propellants. The effects of the crystal shape, size and contents of nitroamine particles, the types of binder, plasticizer and surface-active agents and the contents of NC on combustion performance are studied by closed bomb tests. In the mechanic properties tests, the effects of the types of binders, plasticizers and solid fillers, the interaction between binders and solid fillers and technological procedures on propellant mechanic properties are researched.

针对基础配方具有燃速压力指数远大于1、力学性能差等特点，采用密闭爆发器等试验手段，研究了诸如硝胺粒径、硝胺晶体形状、硝胺含量、粘结剂、增塑剂、硝化棉含量及表面活性剂等因素对燃烧性能的影响；采用抗沖、抗压静态试验方法，对粘结剂、增塑剂、固体填料、粘结剂与固体填料之间的相互作用及工艺条件与力学性能之间的关系进行了研究，提出了改善低易损性发射药燃烧性能和力学性能的技术途径。

There is abrupt phase change in nonsinusoidal waves modulation. It can easily produce impulse current and bring large difficulty to high-power emission system; so it is not beneficial to holding the orthogonality between the orthogonal pulses and demodulating information.

非正弦波调制信号存在相位突变，在工程实践中易产生较大的冲击电流，给大功率发射系统带来较大困难；而且相位不连续也不利于保持正交脉冲间的正交性，不利于信息的正确解调。

Methods and Results— Using a micro–single-photon emission computed tomography small-animal imaging system and a Food and Drug Administration–approved radiotracer ([indium 111] oxyquinoline, 111In-oxine), we demonstrate here that monocyte recruitment to atherosclerotic lesions can be visualized in a noninvasive, dynamic, and 3-dimensional fashion in live animals.

方法和结果——采用微单光子发射计算机断层摄影术的小动物成像系统和美国食品药品治理局认同的放射性示踪剂（111In-oxine），我们证实动物体内单核细胞向动脉粥样硬化损害处的聚集能够通过一种非侵入性，动态的，3维方式进行可视化观察。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。