Phase Synchronization in Electrically Coupled Different Neuronal Pacemakers with the Chay Model

We study the phase synchronization in different electrically coupled neuronal pacemakers with the Chay model. The numerical simulation results and the definition of the mean frequency show that phase synchronization is equal to the mean frequency locking. Nearly complete synchronization of different two coupled neuronal pacemakers is also investigated. It is shown that the cross-correlation of the membrane potential variables is suitable to judge the nearly complete synchronization.     

亲情苹果iPod的左右为难

在这个时间论秒过的时代里，我们已经吝惜得没有时间让自己感动了，或者压力中麻木的神经已经没有办法营造一种悸动。我们可以计算着时间赶一笔生意，我们可以掐算着成本经营一份爱情，我们可以演算着进程迎接即将到来的成功的喜悦，但是我们却不能说清楚身上背负的亲情的重量。直到去年年终一次歪打正着的送礼，我才意识到原来很多东西是不可以计算的。     

正常人周围神经冷冻复超微结构观察

本研究利用冷冻复型电镜技术对５例正常人周围神经进行了观察：（１）有髓 同心圆形式包裹轴索，后者位于中央呈圆柱样。（２）雪旺细胞核膜劈裂面不论ＰＦ面还是ＥＦ面膜蛋白颗粒（ＩＭＰ）均较丰富，核孔数量较多，说明核细胞代谢功能较旺盛；另外其胞膜表面ＩＭＰ呈簇状分布，推断在正常情况下该区域物质代谢较活跃或雪旺细胞具有分泌功能；再者，髓鞘板层与一般生物膜不同，其劈裂面不论是ＰＦ面还是ＥＦ面均罕见ＩＭＰ，推测此     

High 翻你的听觉神经

清晨的大自然纯音让你的耳朵伸个懒腰，上班时有交响乐一路相伴，午休空隙偷懒听一曲最新单曲，或者一段Hit—pop叫醒瞌睡的眼皮，傍晚时分的柔美情歌触动你的灵魂，深夜一曲轻Jazz和着红酒催眠你的忧伤。有精美MP3相伴，听觉幸福别无他求。     

Effect of Notoginsenoside-Rg1 on the Expression of Several Proteins in the Striatum of Rat Models with Parkinson＇s Disease

After establishing hemi-Parkinsonian rat models, the relationships between neuron death and the expression of several proteins, such as c-Fos, GFAP, GDNF, NF-κB and some cytokines were determined. Therapeutics experiments with notoginsenoside-Rg1 were carried out. The research results show that the expressions of GFAP, NF-Kκ and c-Fos will obviously increase in the lesion side of the striatum and the expression of GDNF will decrease, which implies that the signal transduction pathway may participate in the apoptosis in neurons. The levels of some cytokines such as TNF-α, IL-1β in the striatum of PD rat models increased compared to those of normal rats. The results of the therapeutics experiments show that notoginsenoside-Rg1 may repress the immune inflammation response and regulate the immune function through the neuro-immune molecular network. Therefore, notoginsenoside-Rg1 can be used as an effective drug for anti-oxidation and anti-inflammation, and can be used in the therapy of Parkinson＇s disease（PD）.     

浮栅技术及其应用

介绍了浮栅技术的基本原理及应用情况。井对2种应用了浮栅技术的典型器件-浮栅MOS晶体管和神MOS晶体管做了详细介绍，分析了他们的基本结构和工作原理，以及建立浮栅MOS晶体管的等效模型，并说明了他们的应用情况及存在的不足。     

高维广义神经传播方程Cauchy问题整体光滑解

其中c_1、c_2为非负常数。近些年来,国内外许多学者对这类方程进行了深刻的研究.M.E.Schonbek研究了神经脉冲传播中的Fitzhugh-Nagumo方程组初边值问题整体经典解存在性,郑宋穆、沈玮熙进一步改进了[3]的结论。C.V.Pao研究了     

一种适合于听觉神经刺激的可编程双相恒流脉冲发生器

正向设计了一种适合于听觉神经刺激的可编程双相恒流脉冲发生器，它可根据耳聋患者的要求和不同的语音信号，控制刺激电流脉冲的幅度和宽度，以及脉冲之间的间隙。本文阐述了电路的设计要求和方法，并给出了实验结果。采用标准３μｍｐ阱ＣＭＯＳ工艺，在上海贝岭微电子制造有限公司流片。目前已成功地用于多道人工电子耳蜗接收刺激器中。     

RIM受困群雄割据黑莓手机抢滩中国难言成功

竞争激烈的国内手机市场在"金九银十"之时,一条加拿大RIM公司将进入中国市场销售黑莓手机的消息,再度让业界的神经绷紧. 经过8年不懈努力,黑莓手机终于获得了掘金中国市场的机会.2007年8月,据加拿大《全球邮报》报道,加拿大RIM公司的黑莓(Blackberry)智能手机终于获得信产部批准进入中国市场,首款黑莓手机将于近期在中国上市.