时间子

Time variations corrupt the orthogonality of the OFDM subcar-rier waveforms so that intercarrier interference occurs.

OFDM系统对时间选择特性信道非常敏感，Doppler频移的出现会造成OFDM系统子载波不再正交，对系统引入载波间干扰。

Results Leucocytopenia and lymphocytopenia were seen in all the patients. Two patients had slightly decreased peripheral blood T lymphocyte count. Alanine aminotransferase and aspartate transaminase levels increased slightly in 3 patients. No hypoxemia was seen in all the patients. Both SARSIgM and IgG seroconversion occurred earlier in all the patients with the titer increased more than 4fold shortly. Neutralization test was positive in all the patients. SARS coronary virus RNA was detected by polymerase chain reaction in pharyageal swabs only in 1 patient.

结果 确诊的SARS患者白细胞及淋巴细胞呈不同程度降低，下降时间较流行时提前，下降程度较小；2例外周血T细胞亚群计数轻微降低；3例丙氨酸转氨酶和天冬氨酸转氨酶轻度升高；肾功能、血糖、血脂及心肌酶均无异常；所有患者血清SARSIgM/IgG抗体早在发病第6 d由阴转阳，滴度在短期内呈4倍以上升高，中和抗体实验阳性，1例咽拭子中检测出SARS冠状病毒RNA。

The Queen's Hotel, Ennis, county Clare, where Rudolph Bloom died on the evening of the 27 June 1886, at some hour unstated, in consequence of an overdose of monkshood selfadministered in the form of a neuralgic liniment composed of 2 parts of aconite liniment to I of chloroform liniment purchased by him at

181克莱尔郡恩尼斯的王后饭店。一八八六年六月十七日傍晚，鲁道尔夫。布卢姆因服用过量的乌头，在此故去，时间不详。他服的是按附子搽剂二、氯仿搽剂一（系他于一八八六年六月二十七日上午十点二十分在恩尼斯教会街十七号弗朗西斯。登内希药房所购），按比例亲自配制的神经痛搽剂。

In order to achieve data transfer, the sender and recipient of nodal must be a precise time interval.

为了实现数据传送，发送方和接受方的子节块必须以精确的时间间隔出现。

Based on the theory of nonequilibrium statistics and density operator equation, the generalized master characteristic function for the nonextensive reaction-diffusion systems affected by pressure is derived by equation satisfied by calculating the time variation of probability distribution function, where the pressure of the nonextensive systems is given in the framework of Tsallis statistics.

依据非平衡统计及密度算子方程，通过计算概率分布函数的时间变化，得到了非广延反应扩散系统在压力作用时其特征函数满足的广义主方程，其中非广延反应扩散系统的压力在Tsallis统计的框架下给出。与唯象理论中的主方程比较，新得到的方程不仅依赖于非广延参量q而且有更多的非线性项，因此更具有普遍性。

Using silicon and metallic iron,α-Si_3N_4 olivary microparticles with a diameter of about 300～500 nm have been obtained at 650℃.When silicon and metallic aluminium were used to react with ammonium chloride,α-Si_3N_4 nanowire bundles with diameter of about 8 nm can be also obtained at 600℃.Since all of the starting materials used are relatively cheap,the methods will have potential prospect in industrial application.3.Graphite-like carbon nitride nanowire bundles with diameters of 200-500 nm were synthesized from the solid state thermolysis of melamine at relatively low temperature(400℃).

相关研究工作的成果发表在International journal of applied ceramicstechnology.2、以廉价的硅铁合金和氯化铵为原料，在600℃合成了α相的氮化硅纳米线束，单根纳米线直径8 nm，长达800 nm，考察了反应温度和反应时间对产物纯度和形貌的影响；以硅粉和铁粉为原料合成了纯度良好，直径为150～500 nm的α-Si_3N_4亚微粒子；以硅粉和铝粉为原料在400-600℃合成了直径为10 nm左右的α相氮化硅纳米线束。

The number, size and time of pycnidia formation were optimum on asparagus stems and varied dependent on the residues on which the pathogen saprophytically grown.

柄子器之数目，大小及形成之时间均以芦笋为佳，并随所腐生之植物残体而异。

The oscillating behaviors in darkness of pyrogallic acid-KBrO-HSO-system have been studied, the relations between induction period τ as well as oscillating period and the initial concentrations of reactants of the system have been determined experimentally at 25℃、35℃.

研究了无光照条件下焦性没食子酸-KBrO-HSO体系振荡的基本规律，得到了25℃、35℃时起振时间τ、振荡周期T与各反应物起始浓度之间关系的经验方程。

Wave Field Modeling, Ricker Wavelet, Fourier Transforms, Time Domain, Frequency Domain, Seismic Source

波场模拟，Ricker子波，傅立叶变换，时间域，频率域，震源

Then it gives two examples for numerical modeling with the Ricker wavelet. Finally, we write out the detailed proving process of the Ricker wavelet formula from time domain to frequency domain.

然后列出2个数值模拟算例并且在最后给出了Ricker子波表达式由时间域变换为频率域的详细推导过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。