Dislocation Dissociation Strongly Influences on Frank-Read Source Nucleation and Microplasticy of Materials with Low Stacking Fault Energy

The influence of dislocation dissociation on the evolution of Frank-Read （F-R） sources is studied using a three- dimensional discrete dislocation dynamics simulation （3D-DDD）. The classical Orowan nucleation stress and recently proposed Benzerga nucleation time models for F-R sources are improved. This work shows that it is necessary to introduce the dislocation dissociation scheme into 3D-DDD simulation, especially for simulations on micro-plasticity of small sized materials with low stacking fault energy.     

非常人贩2

2002年那个身手敏捷、车技高超的秃顶帅哥弗兰克(杰森·斯坦森饰)又回来了!这一次他可没有开着名牌汽车运送奇怪的货物,而是为企业家担任专职司机,并且与企业家的公子关系良好。不幸的是,小男孩被犯罪集团看中,遭到绑架勒索金钱。这还不算,犯罪集团还将致命的传染性病毒注入男孩体内,以他为媒介造成一次大面积的疾病流行。弗兰克当然不会袖手旁观,自然会再一次展示超凡车技和无敌拳脚功夫,打入犯罪集团老巢,兑现他保卫小男孩的诺言……     

On the classification of positive quaternionic Kähler manifolds with b 4 = 1

Let M be a positive quaternionic Kahler manifold of dimension 4m. We already showed that if the symmetry rank is greater than or equal to [m/2] ＋ 2 and the fourth Betti number b4 is equal to one, then M is isometric to HPm. The goal of this paper is to report that we can improve the lower bound of the symmetry rank by one for higher even-dimensional positive quaternionic Kahler manifolds. Namely, it is shown in this paper that if the symmetry rank of M with b4（M） = 1 is greater than or equal to m/2 ＋ 1 for m ≥ 10, then M is isometric to HPm. One of the main strategies of this paper is to apply a more delicate argument of Frankel type to positive quaternionic Kahler manifolds with certain symmetry rank.     

业界新标准的创立 访Wavestream公司COO弗兰克先生

卫星与网络=S弗兰克=F瑞士手表以其百年积淀的专注、让人折服的品质和精益求精的工艺,使其远远超越了日用品的范畴,达到艺术品的境界,让一些收藏家狂热追捧。即使在专用产品领域,也有某些精湛的成就达到了艺术品的高度,Wavestream公司的产品就是如此。抚触它们,使用它     

克莱斯勒怎样直面自己的错误

也许一个公司最重要的责任就是在出现错误时坦白承认.我之所以深有体会是因为1987年克莱斯勒出现了问题. 1987年7月23日早晨,我走进办公室,还没来得及喝上一杯咖啡,公司副董事长杰里·格林沃尔德就给我带来一个坏消息:第2天联邦大陪审团将在圣路易对我们提出控诉;司法部将会对我们进行1200万美元的罚款,并且对我们的2位管理人员弗兰克·奥赖利和艾伦·斯卡德提出刑事诉讼.他告诉我,问题在于,我们的几家工厂在测试汽车的时候,汽车里程表的线一直是断开的.而且,有一些汽车在测试中遭到了损坏,但是在修理后又被当作新车卖给了顾客.     

AsH+离子的电子结构和跃迁性质

采用多参考组态相互作用方法计算了AsH⁺离子前3个离解极限所对应的8个电子态(X²Π,a⁴Σ^-,A²Σ^-,b⁴Π,B²Δ,C²Σ⁺,D²Π,2²Σ⁺)的电子结构.As原子选择了aug-cc-pwCV5Z-PP相对论赝势基组.在计算中考虑了Davidson修正,芯-价电子关联和自旋-轨道耦合效应.拟合得到了所有态的光谱常数,离解能越大的电子态,其谐振频率越大,平衡核间距越小.考虑自旋-轨道耦合效应后,由于避免交叉,B²Δ_3/2和B²Δ_5/2变为双势阱结构.最后预测了A²Σ^-→X²Π,a⁴Σ_1/2^-     

我的“荒岛唱片”弗兰克《d小调交响曲》

半个多世纪前，英国广播公司（BBC）出版的一份音乐刊物上开辟了一个专栏叫“荒岛唱片”，假设自己漂流到荒岛上成为鲁宾逊时，作为爱乐者的你会想随身带上哪张唱片。不料投稿的热潮，使得这个专栏成为刊物的亮点。后来，欧洲其他国家的电台和音乐杂志也纷纷效仿这个颇受欢迎的栏目。     

Franck--Condon factors and r-Centroids for the A 1∑+u-X1∑+g Band System of 107,109Ag2: Comparison of the Observed and Calculated Absorption Band Strengths

Franck-Condon factors and r-centrolds for the, A^1 ∑^＋ u-X^1∑^＋ 9 band system of ^107,109Ag2 are computed using Morse and Rydberg-Klein-Rees potentials for both lower and upper electronic states. The differences between the two sets of results are typically in the third decimal place for transitions involving vibrational levels with ν＇ and ν＂ up to about 15. Somewhat larger deviations appear for higher vibrational levels, but both sets of results follow the same pattern, which is to match well with the relative absorption band strength distribution in our experimental spectrum. The relative absorption band strengths are calculated by assuming that the electronic transition moment has only a weak dependence on the internuclear distance r. Good agreement between our measured and calculated absorption band strength ratios is found, which provides an excellent test of the calculated Franck- Condon factors and relative absorption band strengths. The r-centrold value for the （ν＇ = 0, ν＂ = 0） band is found to be approximately equal to the average value of r＇ and r＇＇e , indicating that the potentials of both states are not significantly aaharmonic around their minimum regions.     

弗兰克—赫兹实验中的峰间距问题

运用吸收峰形成与变化判断准则解释了管温和阴－栅极距离对峰间距的影响。     

业界新标准的创立 访Wavestream公司COO弗兰克先生

卫星与网络=S弗兰克=F瑞士手表以其百年积淀的专注、让人折服的品质和精益求精的工艺,使其远远超越了日用品的范畴,达到艺术品的境界,让一些收藏家狂热追捧。即使在专用产品领域,也有某些精湛的成就达到了艺术品的高度,Wavestream公司的产品就是如此。抚触它们,使用它