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Smad4 is a central mediator of TGF- signals and is expressed in many tissues during embryogenesis and adulthood.

大量的TGF-β贮于骨基质之中，是骨骼发育和骨重建的重要调节者。

A new method for sorting radar emitter signals is proposed in this paper.

提出一种基于小波与神经网络联合分析的雷达辐射源信号分选新方法。

However, since electro-encephalic signals are both very weak and complicated, even digital encephalogram instruments with a strong resistance to interference are a far cry from meeting the needs of clinical medicine.

然而由于脑电信号非常微弱而复杂，即便是抗干扰性较强的数字化脑电图仪也远不能满足临床医疗的需要，致使脑电图的诊断意义较之心电图落后很多。

Thanks to the patented technology, electro-encephalic signal collection technology has been catapulted to a new high. Nonetheless, the equipment is still denied access to analyzing collected electro-encephalic signals and what it can offer doctors is only electro-encephalic waveform, namely, encephalogram.

该专利技术将脑电信号的采集技术提高到一个新的水平，但是该设备并没有将所采集的脑电信号进行分析的功能，所能呈现给医生的还只是脑电的波型即脑电图。

This thesis can be divided into two parts .One is the endpoint detection of noisy speech signals.

本论文根据内容可以分为两个部分：低信噪比下的语音端点检测和语音增强。

The distribution of energy at different frequency and the rules of signals were analyzed.

为解决这一问题，对示功图时域信号进行了频谱分析。

A new algorithm of fusing MRES into Integral Radiant Energy Signal signals based on Genetic Algorithm was put forward.

以上两种算法都没有考虑如果探头积灰、结焦，将使计算得到的总辐射能失真，失真的辐射能若引入在线控制将给机组安全运行带来隐患。

The nonlinear energy operator to the MPSK signals is extended to estimate its symbol rate.

针对MPSK通信信号的符号率估计问题进行了研究。

Wavelet transform is a new tool in signal processing which is fit for non-stationary signals and Teager energy operator can efficiently detect the 'energy' of a signal.

因此，无声段和清音段几乎不包含说话人的信息，在说话人辨认中，应该把无声段和清音段去掉，而只留下能够体现说话人个人信息的浊音段。

In the dissertation, an automatic spikes recognition procedure is worked out. It separates the EEG signals into individual waves, and then measures the frequency and amplitude of each wave, calculates the sharpness of each wave by the nonlinear energy operator.

棘波是EEG信号中比较有代表性的特征波形，它与癫痫等病理现象有较强的对应关系，但是由于棘波的定义比较含糊，使得自动识别比较困难。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。