作为信号的

The results suggest that Smad4,one of the intracellular downstream molecules of TGF-β superfamily,and an inductive signal mediating epithelial-mesenchymal interaction,may regulate the differentiation of ameloblast and odontoblast cells,and modulate dentinogenesis and amelogenesis.

结论首次观察到Smad4信号分子在人牙胚发育过程中的表达，Smad4作为TGF-β超家族细胞内信号分子，可能参与上皮间充质的相互作用，同时也参与成釉细胞和成牙本质细胞的分化以及牙釉质和牙本质的形成。

Firstly, modal responses were estimated by the application of robust second-order blind identification technique on the measured vibration signals. And then, modal shapes were extracted from the de-mixing matrix above. Finally, frequency and damping ratios could be obtained from the modal responses using each single degree of freedom mode.

运用该法提取系统／结构模态参数的步骤为：首先利用稳健SOBI的盲源分离方法采集的信号进行分离，然后将分离矩阵作为结构／系统的模态振型矩阵，最后再对各个分离后的单自由度信号提取频率、阻尼比参数。

Thus, the signal information is treated as virtually encoded data for the channel of interest, and may comprise essentially any type of signal that is known or determinable, such as a pilot, synchronization, traffic, or control channel.

因此，将信号信息作为针对感兴趣信道的虚拟编码的数据进行处理，可包括基本上任何类型的已知的或可确定的信号、如导频、同步、业务或控制信道。

The invention further relates to an ESR spectrometer for carrying out the inventive method, which - being an automated ESR analyzer - allows for a simple and reliable handling required in modern clinical laboratories. The inventive ESR spectrometer integrates automatic device controls, signal registration and signal evaluation in combination with a computer program for the diagnostic analysis of the measured data.

本发明的主题还包括实施本发明方法的ESR-频谱仪，该仪器作为自动分析仪使用简便可靠满足现代临床实验条件的要求，其中自动设备控制、信号寄存和与计算机程序配合进行测量数据的诊断分析的信号分析综合在一起。

By utilizing the cross-gain modulation effect and the period-one oscillation harmonic frequency-locked in an optically injected semiconductor laser, we can extract the wavelength conversional individual channel optical clock from the optical-time-division-multiplexing signal. In a FP-LD, we numerically simulate the extraction of 20 GHz optical clock at 1550 nm from the 2×20 Gb/s OTDM signal at 1555 nm, and experimentally obtain the -105 dBc/Hz phase noise frequency division clock of 12.36 GHz to 6.18 GHz with simultaneous wavelength conversion from 1550.24 nm to 1545.91 nm.

采用一个FP半导体激光器作为全光分路时钟提取及波长转换器，数值模拟实现了从波长为1555 nm、速率为2×20 Gb/s的光时分复用信号中提取出波长转换为1550 nm、重复频率为20 GHz的分路光时钟，实验完成了从波长为1550.24 nm、重复频率为12.36 GHz光脉冲信号中提取出相位噪声为-105 dBc/Hz的波长为1545.91 nm、重复频率6.18 GHz的分频光时钟。

The hardware included helicon wave antenna and focusing system.

其中硬件系统主要包括：螺旋波天线和辉光聚焦系统的设计；PCL-818HG数据采集卡输出的+5V稳定信号，经过分压电阻和三极管后，作为数控器的外部启动/停止信号，控制步进电机带动光谱仪转动；另外，为了减小光电倍增管的噪声，单独为其提供了稳定的高压直流电源。

A patented respiratory inductive plethysmography technology was used to measure respiratory function, two sensors were woven into the jerkin around the patient's chest and abdomen. A threelead, single channel ECG measures heart rate, and a threeaxis accelerometer records posture and activity level. An NTC thermometer embedded in the shirt measures the body temperature.

两条弯曲成"正弦"状导线嵌在弹性背心的胸、腹部作为呼吸运动传感器，用自主产权的呼吸感应体积描记技术提取呼吸运动；用三导联电极提取心电信号，并探索了非粘贴电极的心动信号获取技术；用三维加速度传感器获取体位、体动信息；用负温度系数的热敏电阻测量作业过程中体温变化。

In the intersatellite coherent optical communication, the vibration of a satellite will lead to a pointing error of transmitting and receiving antennas, which will decrease the signal-to-noise ratio and increase the bit error rate. In this paper, the Rayleigh distribution is taken as the pointing error model caused by satellite vibration, and PSK homodyne communication scheme is used as an example to analyze the influence of the satellite vibration on the system instantaneous BER and average BER. The simulation calculation result of BER is given.

针对星间相干激光通信中卫星平台的振动造成发射天线和接收天线的瞄准角误差，使系统信号信噪比下降，误码率增加，该文以瑞利分布作为振动造成的瞄准角误差模型，结合高斯本振光和艾里信号光外差检测模型，以PSK零差通信体制为例分析卫星振动对系统的瞬时误码率和平均误码率的影响，给出误码率仿真计算结果。

Take SYBR Green I as the intercalating fluorescence dye in Real-time PCR,the overexpression of WIPK and SIPK,which were the key genes of MAPK cascades,and the resistant gene PR1 in tobacco treated with copper and magnesium solution were studied.

采用SYBR GreenⅠ作为荧光染料的Real-time PCR方法，明确了铜、镁素能调控烟株体内蛋白激酶级联信号转导途径的关键基因WIPK、SIPK及抗病信号通路末端PR1基因的过量表达，进一步揭示了矿质营养调控烟草对病毒抗病性的分子机制。

Results reveal that, through such kind of gearing, the air-sea interaction in one ocean basin forced by the zonal-wind stress anomaly causes the air-sea interaction in the other ocean, and then results in anomalous SST there.

结果表明，在太平洋或印度洋上的大气异常信号通过印-太齿轮组合作为桥梁，影响到另一地的海气相互作用，从而将太平洋上的ENSO类年际变率信号与印度洋环流和亚洲季风纬向分量的变化联系起来。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。