上神经

Segment ulnar nerve conduction studies showed that most of the lesions were located above or below the medial epicondyle 2-3cm.③ Abnormal flexor carpi ulnaris muscle electromyography was not found involved in ulnar neuropathy at the elbow. Conclusion Short??

结果 ①尺神经病变组中有19例出现尺神经在肘上至肘下段运动神经传导速度减慢；②尺神经肘上至肘下段短节段性神经传导检测结果显示具体病变部位多数集中在肱骨内上髁上下2-3cm内；③尺神经在肘部病变者并非均有尺侧腕屈肌肌电图的异常。

Results ① Nineteen patients were found ulnar motor nerve conduction slowing across the elbow.② Shortsegment ulnar nerve conduction studies showed that most of the lesions were located above or below the medial epicondyle 2-3cm.③ Abnormal flexor carpi ulnaris muscle electromyography was not found involved in ulnar neuropathy at the elbow.

结果 ①尺神经病变组中有19例出现尺神经在肘上至肘下段运动神经传导速度减慢；②尺神经肘上至肘下段短节段性神经传导检测结果显示具体病变部位多数集中在肱骨内上髁上下2-3cm内；③尺神经在肘部病变者并非均有尺侧腕屈肌肌电图的异常。

Aimed at the characteristic of multiple types of faults possibly happened in nuclear power plant, large scale of training sample, and requirement of quick and accurate diagnosing, after the analysis of large sample number generated by large fault type exceeds limitation of 64K paragraph in DOS and large number of local minmum in error surface, measurements of same format of data file, Win95/NT operating system platform, resetting weight learning rate, dynamic training set in quick learning algorithm and improvement on quick learning algorithm using homotopy method which can avoid local minmum points in error surface have been adopted to ensure quickly and effective process of the course of neural network's training and testing.

针对核动力装置可能发生的故障种类多，训练样本规模大，故障诊断需要快速准确的特点等，分析了样本多和故障种类多产生的训练样本量超出DOS段大小和网络误差曲面上局部极小值多的情况，采取了使用相同格式数据文件、Win95/NT操作系统平台，对快速学习算法采用重置神经网络权值学习率和动态训练集、并采用能够有效克服网络误差曲面上局部极小点的同伦方法对学习算法进行改进等措施保证神经网络训练测试过程的快速、有效地进行；针对装置发生的故障须快速、准确诊断的需要，分析了故障的产生对装置参数变化的影响及操纵员对故障诊断的基础，在核动力装置发生故障时参数曲线的变化量与正常运行时参数曲线的变化量存在明显差异的基础上，提出采用参数曲线的变化量作为神经网络的输入，并围绕参数变化量的方法采用二次曲线拟合滤波求变化量和阈值技术来保证神经网络得到精确的装置参数变化量，从而得到准确的诊断结果。

Neuroectoderm; neural crest; neural plate; floor plate; neural tube; neuraxis; neurulation; neuroblasts; stem cells; differentiation; ontogeny; morphogenesis; histogenesis; organogenesis; synaptogenesis; gangliogenesis; embryogenesis; axonogenesis; retinogenesis; gliogenesis; glial progenitor cells; oligodendrocyte progenitor cells; retinal progenitor cells; nerve growth factor; neurotrophic factors; trophic factors; growth factors; neural tube defects; anencephaly; spina bifida; neuroblastoma cells; cell migration; neurogenesis; development; developmental stages

神经外胚层；神经脊；神经板；底板；神经管；轴索；神经胚形成；成神经细胞；干细胞；分化；个体发生；形态发生；组织发生；器官发生；突触发生；gangliogenesis；胚胎发生；axonogenesis；retinogenesis；gliogenesis；神经胶质祖细胞；少突神经胶质细胞祖细胞；视网膜祖细胞；神经生长因子；神经营养因子；营养因子；生长因素；神经管故障；无脑；脊柱裂；成神经细胞瘤细胞；细胞迁移；神经发生；发展；发展进程首页上一页下一页末页共有 22 条记录，本页从第 11 到第 20 条。

Results Trunk neural crest stem cells were successfully isolated and cultured. The immuocytochemcal result showed that the cells were nestin-and P75-positive. Trunk neural crest stem cells grew through adhering to chitosan fiber after inoculation. Under an electon microscope, the spindle-shaped trunk neural crest stem cells were proliferated and migrated along the fiber. The cells arranged side by side or linked by heads and tails in processes. The ends of S-100 positive cells were flat and expanded, adhering to the fiber as claw-shaped pseudopodium.

结果 采用神经管植块法培养的神经嵴干细胞，免疫细胞化学染色呈现nestin及P75双阳性，将其接种在壳聚糖纤维支架材料上，可见神经嵴干细胞贴附于壳聚糖纤维上生长；S-100免疫细胞化学染色显示，S-100阳性细胞突起的末端呈扁平状膨大；扫描电镜显示，壳聚糖纤维上的躯干神经嵴干细胞为梭形，呈现"端对端"、"肩并肩"排列，伸出爪形伪足贴附于壳聚糖纤维上。

The results showed an increased mean jitter value, fiber density and abnormal percentage both in EDC and AT muscles in group 1 and II diabetic patients comparing to the normal controls. These findings suggest an impaired or immatured neuromuscular junctions and an evidence of reinnervation through axonal sprouting in the diabetic patients either with or without nerve conduction abnormalities. In conclusion, the changes of axonal degeneration and reinnervation are the main pathophysiological mechanism of diabetic neuropathy, and the SFEMG is more sensitive than routine nerve conduction study in the diagnosis of diabetic neuropathyKeyword Axonal degeneration , diabetes mellitus , neuropathy , single fiber electromyography

结果显示两组糖尿病病患的连续间值差异，肌纤维密度及不正常比率比对照组显著增加(t试验，依序p.01)，在第一组糖尿病患中，伸指总肌的连续波间值差异比第二组高(p.05)，而连续波间值差异与纤维密度之间也成线性相关的增加(伸指总肌，r=0.471，p.01；胫前肌，r=0.386，p.02)，在伸指总肌测得的连续波间值差异上，第一组糖尿病患有75%不正常，第二组有33.3%不正常，而在胫前肌的连续波间值差异上，第一组糖尿病患有83.3%的不正常，第二组有75%不正常，在肌纤维密度的测定中，第一组糖尿病患的伸指总肌有27.8%不正常，胫前肌有58.3%不正常，第二组病患的伸指总肌有25%不正常，胫前肌有41.7%不正常，此结果表示糖尿病神经变造成的神经肌像交接处不稳定及有神经轴再生的重分布现象，因此也证实糖尿病神经病变的主要病理机转为神经的退化所致，而在诊断上单纤维肌电图检查的敏感度也比运动神经传导速度检查为高。

About 48%(90/194) were below 29 years of age. Ninety-nine of 194 cases had either radiotherapy alone or supplementary treatment with radiotherapy following surgery. We analyzed multiple prognostic factors. The factors of importance included postoperative radiotherapy; female in glioblastoma multiforme; the primary tumor dose above 5000 rads and/or whole brain irradiation in malignant astrocytoma and glioblastoma multiforme; the primary tumor dose above 4500 rads in ependymoma, medulloblastoma and oligodendroglioma; and spinal axis irradiation above 2000 rads in ependymoma and medulloblastoma that produced a better prognosis than in other groups.

男与女之比例为2.7比1，年龄分布自1至81岁，平均年龄33.3±19.3岁，中值年龄为34岁，29岁以下占48%(90/194)，其中99例单独或手术后辅以放射腺治疗，分析同种脑瘤的预后因素，其中多形神经胶母细胞瘤有手术后放射线治疗或女性，多形神经胶母细胞瘤合并星细胞瘤原发肿瘤剂量5000雷得以上或曾全颅腔照射，神经管胚细胞瘤，间胶质母细胞瘤，及室管膜瘤原发肿瘤剂量4500雷得以上，室管膜瘤及神经管胚细胞瘤有脊轴照射2000雷得以上预后均佳，且统计上有显著的差异。

Objective To observe the results of restoration of shoulder abduction by spinal accessory nerve transfer which was sectioned infraclavicularly to repair the suprascapular nerve in avulsed brachial plexus injury .

目的观察在锁骨下水平切断副神经，移位修复肩胛上神经，恢复臂丛损伤患者肩外展功能的临床效果及对斜方肌功能的影响。

Basing on the setup of animal model of root avulsion of the brachial plexus, we divided the experimental animal into four groups by the operative method: Group A: one end of the maternal nerve graft was connected with the upper trunk of the healthy side by end-to-side neurorrhaphy, and the other end was sutured to the distal stump of musculocutaneous nerve infraclevicularly by end-to-end neurorrhaphy. Goup B: on the healthy side, the operation was the same, the other end was sutured to the distal end of C〓 by end-to-end neurorrhaphy on the affected side. Group C: the maternal nerve graft bridged the phrenic nerve and infraclevicular musculocutaneous nerve of the affected side by end-to-end neurorrhaphy. Group D: the phrenic nerve was sutured to the distal end of C〓 supraclevicularly by end-to-end neurorrhaphy.

在构建了模拟小儿臂丛神经根性撕脱伤的动物模型基础上，将实验动物按手术方式分组如下，A组：母鼠提供的的神经移植体一端与子鼠健侧臂丛上干行端侧吻合，另一端与患侧已切断的锁骨下肌皮神经远端行端端吻合。B组：母鼠提供的的神经移植体一端与子鼠健侧臂丛上干行端侧吻合，另一端与患侧已切断的锁骨上颈〓远端行端端吻合。C组：母鼠提供的的神经移植体桥接于子鼠患侧膈神经与锁骨下肌皮神经之间。D组：子鼠患侧膈神经直接与锁骨上颈〓远端行端端吻合。

Hyoid bone ; carotid artery ; hypoglossal nerve ; superior laryngeal nerve ; anatomical landmark

舌骨；颈总动脉；舌下神经；喉上神经；解剖标志

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。