无能力

Headline/UK, House of Books/Holland, Droemer/Germany, Mondadori/Italy, Hayakawa/Japan, Bertlesmann/Poland, Ediouro/Brazil, and Matar/Israel

中文概要： David Dosa是位老人医学专家也是布朗大学医学助理教授，他的猫Oscar乍看之下平凡无奇，却有著极为特别的能力。

This condition may be ralated to the source tissue which had lost morphogenic potential.

原生质体的愈伤组织在继代中生长旺盛，繁殖迅速，但无形态发生，这可能与起始材料本身已丧失分化能力有关。

Moreover, the actual allele frequency of most varieties deviates far from Hardy-Weinberg equilibrium. All PPB、na 、I、h、Gi and Fst have proved to be the references to elucidate that ISSR is a most powerful tool to analyze genetic diversity, compared with the RAPD marker and the allozyme marker is less strong ordinally. We could divided the 70 samples into A, B, C, D and E five groups using three methods according to genetic distance clustering. There is a bit displacement for few varieties in different clustering maps, but the most are similar to morphological analysis despite that there is still a great difference among cultivars in the same one group. The above results imply that the three methods have the different sensitivity and resolution in genetic distance analysis of close varieties. The Mantel test indicates that the results from the three kinds of markers have the significant correlation, which demonstrates that the number of the used three kinds of markers is enough to exactly detect the diversity of all 70 samples to ideal extent. And these methods can be used to evaluate the diversity of the whole group using the miscellaneous samples instead of the individual sample, of the Gerbera jamesonii are mainly from tissue culture plants. In conclusion, the above study results provide a reference for the application of three kinds of molecular markers to molecular marker-assisted breeding of flower. 2. The genetic diversity among the eight introduced cut-flower varieties of Ranunculus asiatica was analyzed by the ISSR markers. Based on the genetic clustering tree, all the colorful flower varieties are clustered into one group, and the white flower varieties into another group. Moreover, among the former group the yellow flower varieties are clustered into one sub-group, and the reddish flower varieties, such as rose color, pink, nacarat, are clusetered into another sub-group.

由三种分子标记的分析结果可以看出，等位基因平均值、观察杂合度、Fis值、Fit值皆较高，表明非洲菊等位基因较丰富，杂合基因偏多，且绝大部份品种的实际等位基因频率在品种内偏离了Hardy-Weinberg equilibrium；PP8、na、Ⅰ、h、Gi及Fst皆表明，ISSR检测遗传多样性的能力最强，其次是RAPD，等位酶最低；根据遗传距离进行聚类，三种方法都把70个品种分成A、B、C、D、E五个大组，每一组中除少数品种发生位移外，大部份品种分类结果相似，且与形态分析结果有相似性，但在每一组中，品种间的聚类差别较大，表明这三种方法在近距离品种间检测遗传变异时灵敏度及分辨力不同；Mantel检测表明，三种标记的分析结果有显著相关性，表明所用的三种分子方法的标记数量已经可以相对无偏地检测到70个品种间遗传变异；非洲菊为组培苗，三种标记的检测结果皆表明，混合样品可以作为个体样品的代表，对整个居群的遗传多样性进行评价；这些研究结果可为三种分子标记方法在花卉分子辅助育种中的进一步应用提供借鉴。

The study was done to compare the induction efficiency of human embryonic stem cells to neuroepithelial progenitor cells in human embryonic fibroblasts,mouse embryonic fibroblasts and feeder free systems.

中文摘要：［摘要］比较人胚胎干细胞在人胚胎成纤维细胞、鼠胚胎成纤维细胞饲养层和无饲养层3个诱导体系下形成神经上皮祖细胞的能力。

The VLBW group had a significantly lower birth weight and smaller head circumference than the full term controls at the age of 5. Compared to the control group children, the performances of the VLBW group were inferior in terms of intelligence, neuromotor skills, visual perceptual skills, and adaptive behaviors.

研究结果发现5岁VLBW早产儿的体重与头围明显比对照组儿童小；在神经动作，视知觉、认知以及行为适应能力均明显比足月正常对照组儿童差，活动量则无显著差异。

A new heuristic solution algorithm is presented using an improved genetic algorithm. In the improved genetic algorithm, nondifferentiable exact penalty functions are used to transform a constrained optimization problem into a single unconstrained optimization problem, and hybrid crossovers and intermittent are applied to increase the search capability.

设计了基于改进遗传算法的启发式求解算法，该算法借助不可微精确罚函数将约束问题转化为单个无约束问题来解决，采用混合杂交和间歇变异提高算法的搜索能力。

With strong resistance to pressure, waterproof and low temperature, the wax carton is printed clear, wax distributes equal, no funny smell, nonvenomous and can be packed by folds.

纸箱随承压力强，防潮能力高，耐低温；外表印刷清晰，蜡面分布均匀，无异味、无毒、可叠放。

The first patient to undergo the procedure was a 49-year-old woman diagnosed with ALS in May 2002. She is wheelchair-dependent, nonvocal, and had been demonstrating respiratory decline at a rate of 1.6% per month since diagnosis. The implantation was performed on March 14, 2005, in less than two hours.

第一位接受这项治疗的患者是一位49岁的ALS女性，她在2002年5月接受治疗；她必须依靠轮椅，无语言能力，从诊断出为渐冻人后，每个月的呼吸率退化1.6%；她在2005年3月14日接受植入手术，手术时间低於两小时。

The first patient to undergo the procedure was a 49-year-old woman diagnosed with ALS in May 2002. She is wheelchair-dependent, nonvocal, and had been demonstrating respiratory decline at a rate of 1.6% per month since diagnosis. The implantation was performed on March 14, 2005, in less than two hours.

第一位接受这项治疗的患者是一位49岁的ALS女性，她在2002年5月接受治疗；她必须依靠轮椅，无语言能力，从诊断出为渐冻人后，每个月的呼吸率退化1.6%；她在2005年3月14日接受植入手术，手术时间低于两小时。

The Vg-negative reaction of the triploid female rainbow trout could not provide full evidence for the impossibility of liver to synthesize Vg. That Vg was not synthesized resulted from insufficient estradiol due to the retardation of ovaries development, the un-differentiation of follicular cells and the lost interaction of germ cell and somatic cells. It could be concluded from yolk genesis that the shortage of female triploid rainbow trout's Vg resulted from the abortive ooecium, but did not result in sterility.

由于三倍体雌性虹鳟卵巢发育受阻，无滤泡细胞分化，生殖细胞与体细胞的互作缺失，不能分泌足量的17β-E2以诱导Vg的合成，因而肝脏的Vg阴性并不能说明肝脏不具备合成Vg的能力，从卵黄发生的角度分析，卵黄蛋白原的缺乏不是导致三倍体虹鳟雌性不育的原因，而是其卵泡败育的结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐