The virus is certainly mutating& genetic changes have already affected its biological behaviour, although apparently not yet its transmission between humans. 的确,禽流感病毒正在发生变异&很显然,基因上的改变尚未引起病毒在人间传播,但已经对病毒的生物学特性产生影响。
Synapses are connections between neurons, biological signals are transferred from the presynaptic membrane by the synaptic transmission to the postsynaptic membrane. 突触是神经元之间的连接部位,生物信号从突触前膜经突触传递到突触后膜。
The multiple protection mechanisms of biological information can be achieved by enhancing reliability and security of palmprint images information in the network transmission. 增强掌纹图像信息在网络中传输的可靠性和安全性,可以实现对生物信息的多重保护机制。
Mosquito-borne disease, generally there are two modes of transmission: spread of biological and mechanical transmission. 蚊子传播疾病,大致有两种传播方式:生物性传播和机械性传播。
To measure optical parameters of biological tissues, CCD diffusing reflection and transmission measurements were introduced. 为了测量生物组织的光学特性参数,采用了CCD漫反射法和透射法。
Methods: In accordance with the biological characteristic of the pathogeny, the sources of infection, the routes of transmission, susceptible population and their bad habits were tested. 方法:根据该病病原生物的生物特性,确定重要的传染源,查明其传播途径和易感人群及其不良习惯。
This article reviewed the biological activity of isoflavone compound and its effect against schistosome and snail, prospected the applied perspective in the control of schistosomiasis transmission. 本文综述了异黄酮化合物的生物效能及其杀血吸虫和钉螺的作用,并就其用于控制血吸虫病传播的前景进行了展望。
Proton transfer along the hydrogen bond for the transmission of biological elements, such transfers were considered in the biological system is the process of energy transmission and electronic transfer of the same importance. 质子转移可以沿着生物分子的氢键进行传递,在生物体系的能量传递过程中这种转移被认为是和电子转移具有同样的重要性的过程。
Nitric oxide ( NO) is a free radical molecule which has biological activity. As a signaling molecule, it plays an important role in many physiological processes, such as host defence mechanisms, neuronal signal transmission and vasodilation. 一氧化氮(NitricOXide,NO)是一种具有自由基性质的生物活性分子,作为一种信号分子,NO在机体防御、神经信号传导、血管扩张等生理过程中发挥着重要的作用。
Arsenic trioxide ( As 2O 3) is a extremely toxic substance, which can affect the biological activity of malignant tumor cells by such means as regulating the expression of some genes and signal transmission. 三氧化二砷(As2O3)是一种剧毒物质,它可以通过调控某些基因的表达和信号传导等途径来影响肿瘤细胞的生物活性。
Biological characteristics were observed by the way of immunohistochemistry and transmission electron microscope. 并用免疫组化及透射电镜等技术对其生物学特性进行观察。
The stabilized CD4+ T cell count and viral load might be account for the reason of no transmission while the biological factors from host and virus related with transmission need to be further studied. HIV阳性一方稳定的病毒载量和CD4+T细胞计数可能是HIV未发生传播的原因之一,宿主的遗传免疫学因素以及HIV的生物学特性对传播的影响值得深入研究。
Biological systems operate in the stochastically evolving environments, the noise can influence the information transmission properties of cortical neurons, the phenomena of the stochastic resonance ( SR), coherence resonance ( CR) and synchronization have been found. 由于生物系统总是处在一个随机波动的环境中,当噪声作用于神经系统中时,会对大脑皮层神经元的信息传输特性产生影响,出现随机共振、相干共振和同步等现象。
In biological neural systems, synaptic transmission is a noisy process brought on by random fluctuations from the release of neurotransmitters and other probabilistic causes. 此外,在生物神经系统中,突触之间信息的传递是一个随机噪声过程,该过程由神经递质或其它随机因素的释放而导致的随机波动所引发。
As the energy carrier and important biological information molecules, sugar plays a crucial role in many important physiological processes, and also controls the transmission of biological information through their specific recognition with the protein. 糖作为人体能量的载体和重要的生物信息分子在许多重要的生理过程中发挥着至关重要的作用,并且可以通过与蛋白质的特异性识别控制生物信息的传递。
Using information theory to analyze DNA sequence reveals the nature of biological molecules information. It can make people understand and master the transmission and express of genetic information coding clearly, thus it will speed up the comprehending of human evolution. 结合信息论分析DNA序列,有望揭示生物分子信息的本质,使人类有可能了解、掌握遗传信息的编码、传递及表达,从而加快了解自身的进程。