欧洲规范EC2抗冲切设计方法评介

介绍欧洲混凝土结构规范中关于冲切的设计条款，并对其特点加以评述，着重讨论了控制截面取法、设计剪力取值、基本抗力计算及配筋设计做法等问题，最后通过例题说明该规范抗冲切设计方法的应用。

Expression of NADPH Oxidase and Production of Reactive Oxygen Species in Aorta in an Active Immunization Mouse Model with AT1-EC2 Peptide

The antibody against AT1-EC2 plays a role in some kinds of inflammatory vascular diseases including malignant hypertension,preeclampsia,and renal-allograft rejection,but the detailed mechanisms remain unclear.In order to investigate the changes of NADPH oxidase and reactive oxygen species in the aorta in a mouse model which can produce AT1-EC2 antibody by active immunization with AT1-EC2 peptide,15 mice were divided into three groups:control group,AT1-EC2-immunized group,and AT1-EC2-immunized and valsartan-treated group.In AT1-EC2-immunized group and AT1-EC2-immunized and valsartan-treated group,the mice were immunized by 50 μg peptide subcutaneously at multiple points for 4 times:0,5,10,and 15 days after the experiment.In AT1-EC2-immunized and valsartan-treated group,valsartan was given at a dose of 100 mg/kg every day for 20 days.After the experiment,the mice were sacrificed under anesthesia and the aortas were obtained and frozen in liquid nitrogen for the preparation of frozen section slides and other experiments.The titer of AT1-EC2 was assayed by using ELISA.The level of NOX1 mRNA in the aorta was determined by using RT-PCR.The expression of NOX1 was detected by using Western blotting.Confocal scanning microscopy was used to assay the α-actin and NOX1 expression in the aortic tissue.The O 2.production was detected in situ after DHE staining.The mice produced high level antibody against AT1-EC2 in AT1-EC2-immunized group and AT1-EC2-immunized and valsartan-treated group,and the level of NOX1 mRNA in the aortic tissues was 1.6±0.4 times higher and the NOX1 protein expression was higher in AT1-EC2-immunized group than in control group.There were no significant differences in the level of NOX1 mRNA and protein expression between control group and AT1-EC2-immunized and valsartan-treated group.The expression and co-localization of α-actin and NOX1 in AT1-EC2-immunized group increased significantly as compared with those in control group,and the O 2.production increased about 2.7 times as compared with control group.There were no significant differences between control group and AT1-EC2-immunized and valsartan-treated group.It is concluded that active immunization with AT1-EC2 can activate NOX1-ROS,and increase vascular inflammation,which can be inhibited by AT1 receptor blocker valsartan.This may partially explain the mechanism of the pathogenesis of inflammatory vascular diseases related to antibody against AT1-EC2.

云计算安全问题初探——基于Amazon Dynamo与EC2的架构分析

本文通过对AmazonDynamo基础存储架构以及独特的EC2架构的分析认为,部分云计算安全问题正在得到缓解。但是,总体而言,云计算来自内外两个方面的安全问题仍然严峻,需要我们投入更多的精力予以面对。

爱林牌新EC2型儿童保健电脑上市采用2006年版WHO推荐的NCHS标准

爱林牌WZR—EC2型儿童保健电脑，采用二套标准，即06年版WHO推荐的NCHS标准（适用于0～5岁）及中国95年九市城区儿童体格发育衡量值（适用于0～7岁儿童）供医师选择。06年版WHO标准，除体重、身长（高）外，又增加了上臂围，头围及BMI（身体质量指数）等标准。新EC2能显示中位数，评价生长发育状况（分6个等级）及低体重、发育迟缓、消瘦、

通过EC2~黏附放置头皮电极在长时间视频EEG监护中的作用

Objective: To evaluate the usefulness of an adhesive paste named EC2(Grass-Telefactor) in comparison with collodion, for scalp electrodes placement in patients with drug resistant partial epilepsy monitored by long-term video-EEG. Methods: A total of 40 patients with drug resistant partial epilepsy participated in the study. In 20 patients, electrode placement on the scalp was made with collodion (group C)-whereas in the remaining patients EC2was used (Group P). After the electrode placement (T1) and after 24 h of recording (T2), the impedance of the electrodes was measured. Moreover, the time required to apply the electrodes and for their daily maintenance was calculated and recorded for all patients who entered the study. Results: At each observation, group C showed mean values of electrode impedance significantly higher that the group P (T1: 16.8 kΩ; T2: 6.5 kΩvs T1: 2.4 kΩ; T2: 4.0 kΩ, respectively) (P < 1×10-5). The time required to make the montage and to provide its daily maintenance was significantly shorter in group P than in group C [20.8 and 10.5 min vs 44.3 and 19.7 min, respectively (P < 1×10-5)]. Conclusions: We found that the use of EC2 paste in scalp electrode attachment is less time consuming, with better recording quality as a result of lower electrode impedance values, than the use of collodion. Significance: EC2 paste may substitute collodion in electrode placement for long-term video-EEG monitoring, with an optimal cost-benefit ratio in terms of recording performance, time consumption, and safety.

基于EC2的无人化作战体系云流化指控架构设计方法

针对传统指控架构难以满足新型无人化作战体系需求的问题,基于云协同理念提出“前线无人作战流”与“后方有人指控云”有机融合的云流化指控概念,设计指控资源云服务模式。在面向无人化作战改进组织指挥与控制(enterprise command and control, EC2)理论适变性的基础上,解耦指控组织与指控服务并分别进行设计,将组织、节点和事件三个层面的适变行为建模为指控关系的应变过程,进而提出支持按需重构指控关系的适变价值生产单元(value production unit, VPU)模型。最后,以边境管控使命为例详细阐述了云流化指控架构设计方案,效能评估结果表明其在时效性和鲁棒性方面具有优势,可以更好地适用于无人化作战体系。

我国服务外包集聚的出口促进效应研究——基于示范城市ITO面板数据的EC2SLS估计

文章以信息技术外包（ITO）为例,基于EC2SLS估计法和17个服务外包示范城市2006~2012年的面板数据考察了服务外包集聚对本行业出口的促进作用。我们发现,在控制劳动力低成本优势、R＆D、人力资本和网络普及率等因素的影响后,通过示范城市建设所形成的服务外包集聚对IT O出口在经济上和统计上都有非常显著的正向促进效应,这说明尽管目前我国服务外包产业还不具备比较优势,但通过服务外包示范城市和基地建设促进产业集聚和专业化生产,是增强我国服务外包国际竞争力、推进服务外包出口快速增长的有效路径。

Fine mapping of an Arabidopsis thaliana male sterile mutant EC2-157

An Arabidopsis thaliana male sterile mutant EC2-157 has been isolated using an EMS mutagenesis strategy.Genetic analysis indicated that it was controlled by a single recessive gene called ms157.No pollen grains have been observed in mutant anthers.ms157 Has been mapped to a region of 74 kb located in BAC clone T6K22 on chro-mosome IV using a map-based cloning strategy.As no male sterile genes have been reported in this region,ms157 could be a novel gene related to fertility.The further molecular cloning and functional analysis on this gene should facili-tate our understanding of A.thaliana anther development.

适应市场需要 爱林牌新EC2、EG、E12型儿童保健电脑上市采用新《中国7岁以下儿童生长标准》和新《7岁以下国际标准》

爱林牌WZR—EC2型“儿童保健电脑”，采用两套标准，即2005年版《中国7岁以下儿童生长标准》和2006、2,007年版WHO公布的0～7岁以下《儿童生长标准》。标准中，除体重、身长（高）外，中国标准中还有头围、胸围、坐高及BMI（体块指数）等标准；同际标准中有上臂围、头围及BMI。新EC2能显示中位数，评价生长发育状况（分6个等级）及低体重、发育迟缓、消瘦、超重、肥胖（分轻、中、重）、体重正常和体型等指标，计算BMI数值及评价，还附有预测儿童成人时身高及百年历功能等，并携带日本EPSON微型打印机，只要输入一次数据即能按两套标准评价和打印。

爱林牌新EC2、EI2型儿童保健电脑上市采用WHO和中国两套最新标准评价

爱林牌WZR—EC2型“儿童保健电脑”，采用两套最新标准，即2006年版WHO公布的《儿童生长标准》（适用于0～5岁儿童）和中国2005年《中国九市7岁以下儿童体格发育衡量值》、《中国儿童生长标准与生长曲线》。2006年版WHO标准，除体重、身长（高）外，又增加了上臂围，头围及BMI（体块指数）等标准。新EC2能显示中位数，