Seismic Response of Adjacent Structure to Inter-Story Isolated Structure

Currently, land resources are becoming more and more constrained and structures are getting closer to each other. To investigate the seismic response of inter-story isolated structure to adjacent structure, models considering no soil-structure interaction (SSI), considering soil-structure interaction (SSI), and considering structure-soil-structure interaction (SSSI) were established. Nonlinear seismic response comparative analysis was conducted by varying the spacing between adjacent structure and inter-story isolated structure, as well as the weight of adjacent structure, under different earthquake inputs, in order to obtain the structural response characteristics. The results indicate that the inter-story drift and inter-story shear of the inter-story isolated structure without considering SSI are smaller than those considering SSI and SSSI. The inter-story drift and inter-story shear of the inter-story isolated structure considering SSSI are further affected compared to that of the inter-story isolated structure considering only SSI. As the spacing between adjacent structure and inter-story isolated structure increases, the influence of adjacent structure on inter-story isolated structure decreases. The variation in the spacing between the two structures has a negligible effect on the isolation layer of the inter-story isolated structure. With the increase in the weight of adjacent structure, the influence of adjacent structure on inter-story isolated structure becomes more significant. The increasing weight of adjacent structure has an increasing effect on the Isolation layer of the inter-story isolated structure.

VDE-TER信道中基于先验修正因子的Turbo码译码改进算法

甚高频数据交换系统是国际海事组织主导e-航海战略中的主要通信方式之一。其中,VDE-TER业务根据物理信道特性划分了多种业务逻辑信道。为保证VDE-TER信道传输质量前提下提升数据传输效率,本文在深入分析VDE-TER不同业务逻辑信道下Turbo编译码算法基础上,提出了一种基于先验修正因子的Max-Log-Map改进算法。该算法针对VDE-TER不同业务逻辑信道Turbo编码特性,通过仿真和实际物理信道大样本性能测试,实现了VDE-TER特定逻辑信道的最优修正因子值确定。结果表明,加入修正因子的译码算法与传统译码算法相比,性能提升0.6~0.8 dB增益,为高性能VDES产品研制奠定了理论技术基础。

高效建立129/ter、C57BL/6J小鼠胚胎干细胞系的方法学探讨

A new method for establishing ES cell lines from 129/ter、C57BL/6J mice was set up which was characterized by the murine embryonic fibroblast cell(MEF) feeder, the medium of rat heart cell-conditioned medium(RH-CM)for ES cells, and the consecutive digestion by the digestion liquid containing 1% serum. Every group of improved experiments was done with a control of routine method. The results showed that, compared with routine method, the improved way increased the ratio of ES cell lines of 129/ter mice from 11.8% to 33.3%, and of C57BL/6J from 3.7% to 13.3%. The difference is distinct. The passage culture of ES cells showed that, compared with medium added LIF, RH-CM not only inhibited the differentiation of murine ES cells, maintained its dipoild karyotype, but also promote its adherence growth. This kind of culture condition not only maintained the ES cells in an undifferentiated state and their normal dipoild karyotype, but also a series of other characteristics of totipotent embryonic stem cells during extended culture period.

Central gas entropy excess as direct evidence for AGN feedback in galaxy groups and clusters

By analyzing Chandra X-ray data of a sample of 21 galaxy groups and 19 galaxy clusters, we find that in 31 sample systems there exists a significant central （R ≤ 10 h^-171 kpc） gas entropy excess （AK0）, which corresponds to = 0.1 - 0.5 keV per gas particle, beyond the power-law model that best fits the radial entropy profile of the outer regions. We also find a distinct correlation between the central entropy excess △K0 and K-band luminosity LK of the central dominating galaxies （CDGs）, which is scaled as △K0 ∝ L K 1.6±04, where LK is tightly associated with the mass of the supermassive black hole hosted in the CDG. In fact, if an effective mass-to-energy conversionefficiency of 0.02 is assumed for the accretion process, the cumulative AGN feedback E AGN feedack=ηMBHc2 yields an extra heating of = 0.5 - 17.0keV per particle, which feedback is sufficient to explain the central entropy excess. In most cases, the AGN contribution can compensate the radiative loss of the X-ray gas within the cooling radius （= 0.002 - 2.2 keV per particle）, and apparently exceeds the energy required to cause the scaling relations to deviate from the self-similar predictions （=0.2 - 1.0 keV per particle）. In contrast to the AGN feedback, the extra heating provided by supernova explosions accounts for = 0.01 - 0.08 keV per particle in groups and is almost negligible in clusters. Therefore, the observed correlation between △K0 and Lx can be considered as direct evidence for AGN feedback in galaxy groups and clusters.

染色体7q32-ter鼻咽癌相关基因的初步研究

为克隆 7q32 ter区域等位基因杂合性丢失最小共同缺失区的鼻咽癌相关基因 .以STSD7S5 0 9为探针 ,PCR法筛选位于该区的细菌人工染色体 (BAC)克隆 ,应用EST介导的定位 候选克隆策略并结合生物信息学筛选出在鼻咽癌细胞株和活检组织中表达增强的ESTAA7734 5 4,cDNA克隆测序和生物信息学资源获取全长cDNA ,DNA印迹和甲基化分析研究其表达增强的机制 .结果表明 ,克隆的NAG18基因cDNA全长 80 2bp ,编码 2 2 7个氨基酸 ,定位于胞核 .该基因分别与人、鼠TAXREB10 7基因及RPL6基因高度同源 .其表达增强的机制不是基因拷贝数的丢失和甲基化位点的改变 .可以断定NAG18是定位于 7q32 ter最小共同缺失区的鼻咽癌相关基因 ,它是一高度保守的基因 。

染色体7q32-ter最小共同缺失区鼻咽癌抑瘤基因候选者的筛选

目的：在明确 7q32- ter区域等位基因杂合性丢失最小共同缺失区位于以 D7S509为中心的 D7S500- D7S509- D7S495的基础上，筛选和克隆位于该区内鼻咽癌相关的候选抑瘤基因。方法：应用定位—候选克隆策略筛选位于该最小共同缺失区的 3′末端 ESTs(expressed sequence tags,ESTs),RT- PCR和 Northern杂交筛选出在鼻咽癌细胞株和活检组织中表达下调的 ESTs,采用 cDNA克隆测序和生物信息学资源获取候选 EST的全长 cDNA。 Southern杂交和甲基化分析研究候选基因表达下调的机制。结果：筛选 D7S500- D7S495区域内的 12个代表新基因的 3′末端 ESTs序列，发现一个 EST（ AI290024）在鼻咽癌细胞株及 50％（ 6/12）的鼻咽癌活检组织中表达下调， Multiple Tissue Northern(MTNTM) Blot杂交结果显示该 EST在心、肝、肾等多种组织中存在大小 2.0 kb的转录本。通过测定包含该 EST的 cDNA克隆，获得该新基因（命名为 NAG- 22基因） 2.3 kb转录本的全长 cDNA(GenBank登录号： AF247820),编码 77AA，含有 disintegrin的结构域。 NAG22在 NPC中表达下调的机制不是高甲基化和基因拷贝数的丢失。结论： NAG22是定位于 7q32- ter最小共同缺失区的一个与鼻咽癌相关的抑瘤基因候选者。

基于改进型overlay tester沥青混合料的断裂试验(英文)

为获得沥青混合料的断裂特性,改进了传统overlay tester试验的加载方式、试验模具和控制系统等,提出了在沥青混合料性能试验机(AMPT)上进行沥青混合料断裂试验的方法.为验证该新型断裂试验方法的有效性,拟定了1,2,3和4 mm/min 4个断裂加载速率进行验证.试验结果表明:在低速率加载条件下,沥青混合料呈现蠕变特征;在高速率加载条件下,沥青混合料断裂扩展特性不显著;在中间速率3mm/min加载条件下,试验能够有效区分断裂的裂缝萌生、裂缝扩展和完全断裂的3个断裂过程.此外,提出了断裂能、拉伸强度和拉伸模量等8个断裂参数评价沥青混合料的断裂特性.改进后的overlay tester试验,为研究沥青混合料断裂特性提供了一个新的方法.

TER概念性时态数据模型及其实现

众所周知,实体-关系(E-R)方法是数据库概念模式设计中一种非常实用的方法,它具有图形表示、分析容易、抽象性好、易读等优点。本文给出了一个基于E-R方法的时态数据模型,即时态实体-关系(TER)模型。TER模型不仅具有实体-关系模型的优点,而且还具备面向对象模型所具有的很多性质,表达能力强。此外,我们还讨论了TER的实现,为目前正努力实现的一个功能强大的面向对象的TDBMS打下了良好的基础。

成红细胞样Ter细胞在胶原诱导性关节炎发病中的作用

目的:通过检测Ter细胞在不同发病阶段胶原诱导性关节炎(collagen-induced arthritis,CIA)小鼠脾脏中的数量变化及高峰期CIA小鼠脾脏Ter细胞与关节评分和T、B细胞亚群比例的相关性,探讨Ter细胞在CIA发生和发展中的作用,从而进一步深入理解类风湿关节炎的发病机制。方法: 6~8周的DBA/1小鼠进行CIA模型的诱导,二次免疫后开始对CIA小鼠进行关节评分。根据发病时间和关节评分将CIA分为发病早期、高峰期、晚期三个阶段。发病高峰期小鼠根据最终关节评分再分为高评分组(>8分)和低评分组(≤8分),流式细胞术检测na ve小鼠和各个阶段CIA小鼠脾脏中Ter细胞比例及发病高峰期CIA小鼠脾脏T、B 细胞亚群比例,并进行关联分析。结果:发病高峰期CIA小鼠脾脏Ter细胞比例较na ve小鼠明显升高(8.522%±2.645% vs . 1.937%±0.725%, P < 0.01),高评分组小鼠脾脏Ter细胞比例明显低于低评分组(6.217%±0.841% vs . 10.827%±0.917%, P < 0.01 )。高评分组小鼠脾脏Th1细胞比例明显高于低评分组(1.337%±0.110% vs . 0.727%±0.223%, P < 0.05 ),高评分组小鼠脾脏Th17细胞比例高于低评分组(0.750%±0.171% vs . 0.477%±0.051%, P =0.099),高评分组小鼠脾脏生发中心B(germinal center B,GC-B)细胞比例明显高于低评分组(1.243%±0.057% vs . 1.097%±0.015%, P < 0.05 )。相关性分析结果显示,发病高峰期CIA小鼠脾脏Ter细胞比例与CD4 + T、Th1、Th17、GC-B细胞比例均呈强负相关,与B10细胞比例呈强正相关,相关性均有统计学意义,提示这群细胞在CIA中可能具有保护作用。动态变化研究显示,随着疾病进展,发病晚期CIA小鼠脾脏Ter细胞比例较高峰期明显降低(0.917%± 0.588% vs . 8.522%±2.645%, P <0.001),进一步提示这群细胞在关节炎中的保护作用。结论: Ter细胞在发病高峰期CIA小鼠脾脏中明显增加,与小鼠关节评分及致病性免疫细胞比例呈负相关,与保护性免疫细胞比例呈正相关,发病晚期CIA小鼠Ter细胞比例明显降低,提示Ter细胞可能作为一种保护性细胞参与类风湿关节炎的发生和发展,但其具体作用及机制仍需后续进一步的体内及体外实验验证。

利用drifter资料分析南海北部涡旋特征

利用卫星跟踪的drifter表面漂流浮标轨迹资料,对南海北部的涡旋特征进行了时空分布统计分析,特别是卫星高度计资料无法分辨出的次级中尺度涡旋的特征,并初步分析了其动力机理。研究发现南海北部半径小于10km的次级涡旋要占所有涡旋的绝大部分,涡旋平均半径可达11.7km,反气旋涡数量与气旋涡数量之比约为2.6∶1。研究结果可为未来在南海布放drifter浮标提供技术参考。

TISPAN 13Ter会议总结

TISPAN(电信和互联网融合业务及高级网络协议)第13Ter次会议于2007年5月14～18日在法国索非亚召开,本文主要介绍了CommonIMS相关项目的转移情况以及各工作组的进展情况。

Genotype × environmental interactions for analyzing adaptability and stability in different clones of Dalbergia sissoo Roxb.

In total 36 superior clones of Dalbergia sissoo Roxb., screened from 300 selections conducted in natural and growing range of India and Nepal, were multiplied using single nodal cuttings and estab- lished to evaluate genotypexenvironmental interactions for adaptability and stability at the age of 30 months in three geographical locations in the state of Punjab, India. Clone 124 had maximum adaptability and stability （bi = 1.04） to perform exceedingly well over the locations. Clones 36 and 1 were stable with mean regression coefficient of 0.84 and 1.22, respectively. Nonetheless, clone 4 1 performed exceedingly well for all the characters to attain maximum population mean, and the perform- ance varied substantially across the locations. Therefore, clone 41 was considered as productive but non-adaptive clone. Though some of the clones were sensitive to sites, 14 clones for height, 16 for collar diameter, 12 for DBH and 7 for volume were relatively un-sensitive with higher regression coefficient. Nonetheless, clone 124 was the most Stable with average bi value of 1.04 and productive, which could play an important role in future breeding and commercial deployment of stable and produc- tive planting stock of Dalbergia sissoo.

我国成功研制出12导同步HOLTER仪器应用临床

1957年美国物理学博士,实验物理学家Nor-man J·Holter发明了动态心电图(Aiululatory ECG),故 动态心电图简称Holter。近半世纪以来,随着动态监护技术在医学临床及科研中的广泛应用,HOLTER 技术得到了飞速发展。我国成功研制出12导同步Holter仪器并应用临床,本文对新型12导同步HOLTER 的特点进行介绍,以及在临床中的应用价值。

Geophysical Contribution to the Determination of the Limit between Laayoune and Foum El Oued Aquifers, Origin of Supply Sources of Oued Sakia El Hamra, Laayoune Province, Morocco

Laayoune and the Foum El Oued aquifers are in hydraulic communication only at the level of Oued Saguia El Hamra. The present study has accordingly made use of all the hydrogeological, hydrological, geological and geophysical data that preceded the watershed of Oued Saguia El Hamra in its downstream part. These data are by no means omplementary with the objective of having a better understanding of the boundary line between Laayoune and Foum El Oued aquifers and the origin of feeding the sources of Oued Saguia El Hamra. This study will focus only on the previous geophysical studies where a reinterpretation of electrical soundings has proved useful as a result of the recent well-logging results. It makes it possible to highlight the presence of a significant rise in the truncated marly substratum of Oued Saguia El Hamra and depressions (left and right banks) which could correspond to stream channels or depressed areas. At the level of the Wadi bed, there has been a regular immersion of the conductive level roofs from east to west towards Foum El Oued favoring the flow of wastewater from the zone and spraying the brackish water sources towards the groundwater of Foum El Oued. In the light of the reinterpretation of electric polls, plus as well as the geophysical surveys by electrical tomography and high definition made at the right and left banks of the Oueed Saguia El-Hamra, it was possible to verify the existence of dry ridge separating the two webs of Laayoune and Foum El Oued and stream channels or depressed areas of the left bank for drainage of brackish water to sources located along Oued Saguia El Hamra. The true resistivity models tomography profiles confirm the presence of the backbone at the left and right banks and the graben of the left bank for underground water drainage of the web Laayoune to sources welling the river Saguia El Hamra. They reveal the presence of a quaternary plio-cover (coastal platform Moghrebian) as being heterogeneous and affected by many electrical discontinuities, particularly in the level resistant R2 (coquina sandstone). These discontinuities could correspond to lateral changes in facies and/or synsedimental faults compartmentalizing the plio-quaternary formations into a system of Horsts and Grabens that relies on the whole (D1, Cs) attributed to formations from the Miocene to the Upper Cretaceous. The contours of the map show the distribution of the three families of electrical soundings A, B and C limited by two main electrical discontinuities D and M. East of discontinuity million, this map reflects the look of the wall of the Pliocene-Quaternary resting on the impermeable upper Cretaceous floor. To the west of this electrical discontinuity M, the map reflects the behavior of the roof of marl deposits of Miocene age.

Membership Determination of van den Bergh Open Clusters vdB92, vdB146 (NGC 7129) and vdB150

In this paper we study some van den Bergh open clusters combining photometry and astrometry. A model which analyses the proper motion distribution and the stellar density is applied to find the kinematic parameters and stellar membership in the region of the open clusters vdB92, vdB146 (NGC 7129) and vdB150. The astrometric data are obtained from UCAC4 catalogue. The centre coordinates, the components of mean proper motion, the angular diameter and the astrometric members are reported, taking the following values: for vdB92: &alpha;=105.97281&deg;&plusmn;0.13113&deg;, &delta;=&minus;11.57814&deg;&plusmn;0.10575&deg;,?&mu;&alpha;cos&delta;=&minus;3.46&plusmn;0.19mas/yr,&mu;&delta;=1.27&plusmn;0.19mas/yr, 34', 60 members;for vdB146: &alpha;=325.78423&deg;&plusmn;0.15297&deg;, &delta;=66.13575&deg;&plusmn;0.02907&deg;, &mu;&alpha;cos&delta;=&minus;2.71&plusmn;0.25mas/yr, &mu;&delta;=&minus;3.32&plusmn;0.25mas/yr, 9', 5 members;and for vdB150: &alpha;=332.22519&deg;&plusmn;0.06074&deg;, &delta;=73.40232&deg;&plusmn;0.0.07789&deg;, &mu;&alpha;cos&delta;=3.07&plusmn;0.90mas/yr, &mu;&delta;=4.65&plusmn;0.90mas/yr, 15', 7 members. The incidence of the proper motion errors in the determination of the cluster parameters and of the stellar membership is analysed and it is found that they do not significantly change. We finally compare the astrometric members with the photometric ones given in the literature.

应用VITA3D—MASTER比色系统进行前牙PFM冠选色的初步体会

目的探讨前牙烤瓷修复冠(PFM冠)选色的新方法。方法做前牙PFM冠82例,均采用VITA3D—MASTER比色系统选色。结果82例病人中,除12例略作调整外,均能准确、迅速、有效地选色,便捷地沟通与复制,效果非常满意。结论应用VITA3D—MASTER比色系统选色是一种简便、理想的方法。

基于B样条的TERS形貌成像背景扣除方法

在针尖增强拉曼光谱(TERS)形貌成像过程中,由于针尖与扫描台无法绝对平行、样品电子密度骤变处针尖快速升降以及扫描控制系统响应时间特性差等综合原因的影响,往往使形貌图中带有倾斜或边界面卷曲的成像背景。成像背景对样品形貌的识别和分析带来十分不利的影响,而背景扣除就是解决该问题的重要手段,也是形貌成像预处理的重要组成部分。背景扣除的原理一般是通过拟合背景的方法来扣除成像中的背景。传统的背景扣除方法是利用多项式拟合的方法对成像进行逐行的基线校正,但是该方法在处理形貌成像时常常会由于过拟合而造成样品形貌的失真,同时容易在图片上留下明显的线条纹理。针对传统方法的缺点,本文提出采用B样条曲面拟合方法,直接对样品形貌图进行曲面背景拟合,发挥B样条低阶光滑的优点,能够有效克服传统方法的缺陷。在实验中,同时利用传统方法和该方法对金单晶和合成金片的形貌图进行背景扣除,实验结果表明,两种方法都能够扣除样品形貌图中的成像背景,但与传统方法相比,所提出的方法不会造成样品形貌的失真,且不会留下线条纹理,获得了更加良好的背景扣除效果,为进一步分析样品形貌特征提供了更准确可靠的信息,是一种更加有效的TERS形貌成像背景扣除算法。

一个中国X连锁肾上腺脑白质营养不良家系发生ABCD1基因突变(Ser342Ter)

X连锁肾上腺脑白质营养不良(X-Linked adrenoleukodystrophy,X-ALD)是一种神经变性疾病,发病率大约为1∶15,000-30,000男性。该疾病的生化特征为饱和极长链脂肪酸(VLCFA)在脑白质、肾上腺和皮肤成纤维细胞中病理性地大量沉积。X-ALD的VLCFA的沉积与ABCD1基因突变有关[1]。我们现报道一个发生未发表的ABCD1基因突变(Ser342Ter)的中国X-ALD家系。

多策略的增量TER指导系统融合

针对词一级的混淆网络（CN）构建的对齐方法和骨架翻译选择的问题进行了研究。将增量的对齐方法引入到原有的翻译错误率（TER）对齐框架中，并对加入候选翻译的顺序进行了不同的尝试；同时选用两种最小贝叶斯风险（MBR）策略来选择骨架翻译；为了改进TER中同义词的对齐，进行了同义词匹配。在实验中，把候选翻译的顺序、选择骨架翻译方法、是否引入同义词这三种策略进行了组合。匹配数据显示，可以确定一种组合策略来最大地提高系统融合性能。

The effects of intraspecific competition and light transmission within the canopy on wheat yield in a wide-precision planting pattern

The wide-precision planting pattern has become widely used in the North China Plain as a practice for increasing wheat yield.However,the effects of tilled ng developme nt and light tran smissi on within can opy on wheat yield un der differe nt sowi ng widths have not bee n clearly described.Therefore,a two-year experime nt was con ducted,in cludi ng four different seeding widths(6 cm,W6;8 cm,W8;10 cm,W10;12 cm,W12)and the traditional planting pattern with seeding width of 4 cm(W4).The results indicated mainly positive effects by the reduced intraspecific competition,specifically all three yield components of W6 and W8 were higher than those for W4.The configurations with more than 10-cm seeding width were mainly affected by the negative effect of a relative homogeneous canopy,leading to the weakened light transmission,leaf senescence,and reduced grain number per spike.Finally,the yields of W6 and W8 were significantly higher than that of W4,whereas the yield in W12 was lower(though not significantly)than W4.In wheat production,therefore,the appropriate seeding width of 6-8 cm is recommended for farmers,whereas the too wide seeding width,with more than 10 cm,should be avoided.