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For the bud directly differentiation , the suitable culture medium was MS+BA 2mg/L +NAA 0.2mg/L or MS+TDZ0.01mg/L +NAA0.2 mg/L, of which the induction rate was 88% and 100% respectively. An efficient tissue culture system has been developed with the bud of mature seed of Aesculus hippocastanum L. as explants . Buds were induced from 2cm high young plantlet cultured on MS medium supplemented with 0.6 mg/L 6-BA plus 0.1mg/L or 0.4~0.6mg/L ZT plus 0.1 mg/L NAA for 15 d, and the induction rate was 100%, the mean No. of buds was 35.7; The combination of MS+0.2mg/L 6-BA +0.1mg/L NAA + 10mg/L AD was the suitable culture medium for elongation of the buds.

以欧洲七叶树成熟种子的胚芽进行离体培养和快速繁殖，结果表明：高约2cm的无菌苗在MS+0.6mg／L 6-BA+0.1 mg／L NAA或MS+0.4～0.6mg／L ZT+0.1 mg／L NAA培养基上培养15 d左右可诱导出不定芽，分化频率为100％，平均每株产芽35.7个；MS+0.2mg／L 6-BA+0.1mg／L NAA+10mg／L AD培养基有利于芽伸长；生根培养基为1／2MS+0.4 mg／L NAA+0.2mg／L IBA时，生根率可达75％。

In view of present situation and future development of altitudinal public traffic system in China, the paper gives the scheme to design and realize an information transmission system for altitudinal public traffic system based on the Ad Hoc networks.

针对中国目前智能公交的发展现状与趋势，提出了一种基于Ad Hoc网络的智能公交信息传输系统的设计方案。

Methods: 94 normal elders, 107 amnestic MCI patients and 54 patients with mild AD accepted 8 neuropsychological tests including TMT, mini-mental state examination, etc.

对正常老人94名，遗忘型MCI组107例和轻度AD组54例进行MMSE、TMT在内的8种神经心理测验。

"This research was aimed at defining the best specific cognitive tests for predicting conversion from amnestic MCI to AD," Dr.

&这项研究旨在确定预测遗忘型MCI向AD转变的最特异的认知测验方法，&Fleisher博士告诉路透社健康记者。

BACKGROUND: Alzheimer's disease pathology is common in patients with amnestic mild cognitive impairment without dementia, but the prevalence of AD pathology in patients with subjective cognitive impairment and non-amnestic mild cognitive impairment is unknown.

背景：阿尔茨海默病的病理改变在伴遗忘型轻度认知功能障碍的非痴呆患者较为常见；然而，伴主观性认知功能损害和非遗忘型轻度认知功能障碍患者AD病理改变情况仍不清楚。

AD patient β- the content standard of amylaceous appearance albumen is basic as the accentuation of GDS degree heighten.

AD患者β-淀粉样蛋白的含量水平基本随着GDS程度的加重而增高。

β - content of amylaceous appearance protein can serve as AD and VD disease to diagnose index, its trends detects the process to understanding a disease, observe the curative effect of medicaments, judgement prognosis all has important sense.

结论β-淀粉样蛋白含量可作为AD和VD病诊断指标，其动态检测对于了解疾病的过程，观察药物的疗效，判定预后均有重要意义。

The method uses radiative immunity analysis, determine 43 senile domentia and 33 hemal sexes are gawkish (the β in VD) patient and plasma of 58 healthy old people - the content; analysis of amylaceous appearance albumen and β of observation AD patient - the variable relation of the content of amylaceous appearance albumen and GDS process is reached and treat from beginning to end.

方法应用放射免疫分析，测定43例老年性痴呆和33例血管性痴呆患者及58例健康老年人血浆中的β-淀粉样蛋白的含量；分析和观察AD患者β-淀粉样蛋白的含量和GDS进程的变量关系及和治疗前后β-淀粉样蛋白含量的变化。

It may have a preventional function from Alzheimer's disease. Molecular biological studies are shown that apoE isoform has a isoform-specific role to neurodegeneration. ApoE〓 and apoE〓 aid to sustain the stabilization of cytoskeleton protein tau, while apoE〓 hyperphosphorylates tau to destabilize the microtubule protein, which will make neurocyte easy to form neurofibrillary tangles in AD. Clearance of amyloidal peptide by apoE〓 and apoE〓 is more effective than by apoE〓. ApoE〓 has the strongest ability to clear the amyloidal peptide. It is shown that apoE〓 has a stronger prevention from Alzheimer's disease.

分子生物学研究发现，apoE异构体对神经细胞退化表现出异构体特异作用，apoE〓和apoE〓有助于维持微管的稳定性，而apoE〓则使tau蛋白超磷酸化，破坏微管的稳定性，使神经细胞易于形成神经纤维缠结。apoE〓和apoE〓对A β的清除率远远高于apoE〓，apoE〓对A β的清除能力最强，可见apoE〓对AD的发生具有较强的阻止作用。

Methods: The interhemispheric fissure width,cerebral transverse diameter,width of anterior horn of lateral ventricle,bifrontal index,minimal thickness of medial temporal lobe,interuncal distance,hippocampal height,width of the choroid fissure and width of the temporal horn of lateral ventricle were measured by MRI in 22 patients with mild AD and 20 normal senile subjects subjects respectively.

分别对22例轻度痴呆的AD患者和20例正常老年人进行纵裂宽度，大脑横径，侧脑室额角宽度，双额指数，中颞叶最小厚度，钩回间距，海马高度，脉络膜裂宽度和颞角宽度等指标测量。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。