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Torpa气垫式调压室设计施工和运行经验

水电技术信息 2001年第3期 12-19页

作者： r．S克乔贝格贺桥

Torpa电站是Dokka工程的两个电站之一。该电站的气垫式调压室的总容积为17400m^3，气体体积为10000－12000m^3。气垫式调压室区内的岩石覆盖率达225m，水头为450m。在气垫式调压室上方修建了一个防止漏气的水幕。水幕压力比气垫式调压... 详细信息

Torpa电站是Dokka工程的两个电站之一。该电站的气垫式调压室的总容积为17400m^3，气体体积为10000－12000m^3。气垫式调压室区内的岩石覆盖率达225m，水头为450m。在气垫式调压室上方修建了一个防止漏气的水幕。水幕压力比气垫式调压室压力大2－5bar。必须遵循的主要设计准则之一是水幕压力必须小于岩体内的最小主应力，以防产生水力劈裂，因此进行了大量水力劈裂试验。气垫式调压室为环形结构。从气垫式调压室上方的洞室内钻水幕孔。空气压缩机的容量为940Nm^3/h。同时设置了两套不同的气垫式调压室水位监控系统。经过两年运行后测试表明，只要水幕超压大于2bar，则气体就不会经岩体泄漏。

关键词：气垫式调压室设计工程施工运行引水隧洞

对50例复发性或修补失败的漏斗胸患者实施微创Nuss手术

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世界核心医学期刊文摘（儿科学分册） 2005年第6期1卷 52-52页

作者： Croitoru D. P. Kelly Jr. r. E. Goretsky m. J. 肖莉 Division of Pediatric Surgery Children’s Hospital at Dartmouth Dartmouth Hitchcock Med. Ctr. D. Lebanon NH03766 United States

The aim of this study was to demonstrate the efficacy of the minimally invasive technique for recurrent pectus excavatum. Fifty patients with recurrent pectus excavatum underwent a secondary repair using the minimally invasive technique. Data were reviewed for preoperative symptomatology, surgical data, and postoperative results. Prior repairs included 27 open ravitch procedures, 23 minimally invasive (Nuss) procedures, and 2 Leonard procedures. The prior Leonard patients were also prior ravitches and are therefore counted only once in the analyses. The median age was 16.0 years (range, 3-25 years). The median computed tomography index was 5.3 (range, 2.9-20). Presenting symptoms included shortness of breath (80%), chest pain (70%), asthma or asthma symptoms (26%), and frequent upper respiratory tract infections (14%). Both computed tomography scan and physical exam confirmed cardiac compression and cardiac displacement. Cardiology evaluations confirmed cardiac compression (62%), cardiac displacement (72%), mitral valve prolapse (22%), murmurs (24%), and other cardiac abnormalities (30%). Preoperative pulmonary function tests demonstrated values below 80%normal in more than 50%of patients. Pectus repair was done using a single pectus bar (66%), 2 bars (32%), or 3 bars (2%). Stabilizers were used in 88%of the patients. median length of surgical time did not significantly differ from that of primary surgeries. Complications were slightly higher than those in primary repairs and included pneumothorax requiring chest tube (14%), hemothorax (8%)-, pleural effusion requiring drainage (8%), pericarditis (4%), pneumonia (4%), and wound infection (2%). There were no deaths or cardiac perforations. Initial postoperative results were excellent in 70%, good in 28%, and fair in 2%. Late complications of bar shift requiring revision occurred in 8%. Seventeen patients have had bar removals with 9 patients being more than 1 year postremoval. For the 17 patients who are postremoval,

关键词：漏斗胸 Nuss 心脏移位哮喘症状术后并发症心脏病学胸导管呼吸急促二尖瓣脱垂无显著性差异

Free Energy Calculation through Energy reweighting from molecular mechanics to Quantum mechanics

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Free Energy Calculation through Energy Reweighting from Mole...

关于锚定板结构的整体稳定——铁科院方法与克朗兹方法的比较

中国化学会第30届学术年会-第十九分会：化学中的量子与经典动力学

作者： Xiangyu Jia meiting wang Yihan Shao Gerhard Konig Bernard r.Brooks John Z.H.Zhang Ye mei Center for Laser and Computational Biophysics State Key Laboratory of Precision Spectroscopy and Department of Physics and Institute of Theoretical and Computational ScienceEast China Normal University NYU-ECNU Center for Computational Chemistry at NYU Shanghai

Calculations of the free energy difference between two states at quantum mechanical(Qm) level directly are generally prohibitively expensive, because some intermediates states are usually required in order to increase the overlap in phase space between two adjacent states. Fortunately, free energy is a state function, of which the difference is path-independent. Therefore, in a more practical way the intermediate states can be described by molecular mechanics(mm). The free energy difference between two adjacent states can be estimated using the Bennett Acceptance ratio(bar), which has been shown to give the minimum variance with fixed number of samples. To further reduce the computational expense by refraining from sampling at Qm level for the end states, Boresch proposed a method termed Non-Boltzmann Bennett’s acceptance ratio(NBB), which combines bar and energy reweighting. However, we showed that the most efficient way to calculate the free energy difference between two Qm states is bar+TP, which gives the minimum variance of the results. In this scheme, the free energy differences between mm states are estimated using bar, and at both ends a thermodynamic perturbation from mm to Qm states are applied. In addition, the Qm expense in this scheme is only half of that in NBB. we also show that defining the biasing potential as the difference of the solute-solvent interaction energy, instead of the total energy, can converge to the calculated solvation free energies much faster but possibly to different values. It has also been discovered in this study that BLYP yields better results than mP2 and some later functionals such as B3LYP, m06-2X, and ωB97X-D. This reweighting scheme can also be applied to protein-ligand binding free energy calculations and the corresponding work is in progress.

关键词： Bennett Acceptance ratio thermodynamic perturbation variance biasing potential density functionals

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土木工程学报 1982年第4期 31-42页

作者：卢肇钧吴肖茗孙葵英铁道科学研宄院

一、前言锚定板结构是我国七十年代新发展的一种轻型挡土结构。这种结构的设计必需保证其内力平衡和整体稳定。锚定板的极限抗拔力取决于两种不同的极限状态。第一种极限状态是锚定板前方土体中产生大片连续的塑性区,导致锚定板与其周... 详细信息

一、前言锚定板结构是我国七十年代新发展的一种轻型挡土结构。这种结构的设计必需保证其内力平衡和整体稳定。锚定板的极限抗拔力取决于两种不同的极限状态。第一种极限状态是锚定板前方土体中产生大片连续的塑性区,导致锚定板与其周围的土体发生相对位移,这种极限状态可称为局部破坏,如图1(a)。第二种极限状态是锚定板与其前方土体沿着某个与外部贯通的滑动面发生整体滑动,这种极限状态可称为整体破坏,如图1(b)。限于篇幅,本文仅就第二种极限状态予以论述,即整体破坏及与之有关的试验研究结果。

关键词：锚定板拉杆杆(机械元件) 抗滑安全系数主动土压力模型试验整体稳定

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44．计费工时

商业周刊（中文版） 2014年第24期 58-58页

作者： Paul m. barrett 贾慧娟

1975年，美国最高法院在“古德法布诉弗吉尼亚州律师协会”（*** State bar）一案中裁定，用于设定律师费率的“最低收费制度”违反了联邦反垄断法。律师行业，在帮助大型律所合伙人创造财富——或者让律师苦不堪言上，没有任何制度可... 详细信息

1975年，美国最高法院在“古德法布诉弗吉尼亚州律师协会”（*** State bar）一案中裁定，用于设定律师费率的“最低收费制度”违反了联邦反垄断法。律师行业，在帮助大型律所合伙人创造财富——或者让律师苦不堪言上，没有任何制度可以媲美计费工时。

关键词：工时计费律师协会美国最高法院收费制度 1975年弗吉尼亚州反垄断法

横向受拉和交变荷载下钢筋混凝土粘结性能的试验研究

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钢结构(中英文) 2009年第8期 90-90页

作者： A.Lindorf L.Lemnitzer m.Curbach

为评估横向受拉和交变荷载下钢筋和混凝土的粘结性能,对受拉交变荷载以及沿着拔出钢筋方向的不同裂缝宽度进行拔出试验。对两种不同的荷载水平和两种裂缝宽度进行100万次循环试验。本文对试验结果进行了详细论述。通过对不同的荷载情况... 详细信息

为评估横向受拉和交变荷载下钢筋和混凝土的粘结性能,对受拉交变荷载以及沿着拔出钢筋方向的不同裂缝宽度进行拔出试验。对两种不同的荷载水平和两种裂缝宽度进行100万次循环试验。本文对试验结果进行了详细论述。通过对不同的荷载情况进行对比可知,钢筋和混凝土之间的滑移增大,取决于荷载循环的次数。试验结果显示:循环荷载下,纵向裂缝对粘结性能有很大影响;由于横向张力,纵向裂缝的宽度越宽,滑移越大,发生粘结破坏越早。

关键词：粘结性能拔出试验横向拉力粘结疲劳高周期荷载纵向裂缝

通过肝移植过程中的病毒动力学特征研究丙型肝炎次级病毒复制区

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世界核心医学期刊文摘（胃肠病学分册） 2005年第8期1卷 59-59页

作者： Dahari H Feliu A Garcia-retortillo m A.U. Neumann 陈瑜 Faculty of Life Sciences Bar-Ilan University 52900 Ramat-Gan Israel

Background/Aims: The existence of an extrahepatic hepatitis C virus replicatio n compartment is an important question for optimizing therapy and preventing the infection of liver *** extraheptic replication compartment could be indic ated if viral decline during the anhepatic phase is not a single *** ever, the duration of the anhepatic phase is too short (0.5-2 h) to allow such analysis. Here we mathematically analyze viral decline during liver transplantat ion beyond the period of the anhepatic phase and examine the possibility of vira l compartmentalization. methods: Viral load of 30 patients undergoing liver tran splantation was frequently measured. Simulation and non-linear fitting of diffe rential equation models were used to test different compartmentalization hypothe ***: In 16 of the patients (56%), a bi-phasic viral decline was observ ed which is explained by the existence of a second replication compartment. This extrahepatic compartment is responsible for about 3.1%of virus in circulation and the mean half-life of its infected cells is 2.6 days. The remaining patient s, with a single exponential decline, have either a second compartment with rela tively low contribution or no second compartment. Conclusions: These results pro vide a first quantitative picture of the extrahepatic hepatitis C viral contribu tion and may suggest new approaches for viral clearance.

关键词：肝移植病毒复制丙型肝炎力学特征无肝期肝炎病毒单指数病毒数量病毒载量时间太短

measurement of J/ψ decays into Λ■ π^+π^-

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Chinese Physics C 2012年第11期36卷 1031-1039页

作者：阿布里克木.麦迪娜白景芝白羽班勇蔡啸陈宏芳陈和生陈江川陈进陈元柏陈初萍戴又善邓子艳杜书先方建傅成栋高原宁顾运厅郭子敬 F.A.Huarris 何康林何瑁衡月昆胡海明 T.Hussain 胡涛黄光顺黄性涛黄燕萍季晓斌江晓山焦健斌金大鹏金山李刚李海波李金李蕾李仁英李卫东李卫国李晓玲李小男李学潜梁勇飞刘北江刘春秀刘芳刘峰刘宏邦刘怀民刘觉平刘倩刘荣光刘振安吕峰鲁公儒吕军光罗成林马凤才马海龙马秋海 m.Q.A.malik 毛泽普莫晓虎聂晶 S.L.Olsen 平荣刚邱进发荣刚阮向东单连友尚雷沈成平沈肖雁盛华义孙海生孙胜森孙永昭孙志嘉唐晓田俊平 G.S.Varner 万霞王岚王亮亮王灵淑王平王佩良王贻芳王铮王至勇魏诚林魏代会吴宁许国发俆新平俆晔阎沐霖杨洪勋杨明杨永栩叶铭汉叶云秀喻纯旭苑长征袁野曾云张丙新张炳云张长春张达华张华桥章红宇张家文张建勇张学尧张一云张子平赵京伟赵明刚赵平平赵政国郑波郑海青郑建平郑志鹏钟彬周莉朱科军朱启明朱兴旺朱永生朱自安邹冰松 Institute of High Energy Physics Peking University University of Science and Technology of China Zhejiang University Zhengzhou University Tsinghua University Guangxi University University of Hawaii Honolulu Johns Hopkins University Shandong University Centre for High Energy Physics University of the Punjab Nankai University Sichuan University Huazhong Normal University wuhan University Graduate University of Chinese Academy of Sciences Henan Normal University Nanjing Normal University Liaoning University Seoul National University Nagoya University Guangxi Normal University Soochow University China Center of Advanced Science and Technology Hunan University

Based on 58 million J/ψ events collected by the BESⅡ detector at the BEPC, J/ψ→ΛΛ π＋π- is observed for the first time. The branching fraction is measured to be Br（J/ψ→ΛΛ π＋π-）=（4.30±0.13±0.99）×10-3, excluding the decays to intermediate states, namely J/ψ→Ξ-Ξ＋, J/ψ→Σ（1385）-Σ（1385）＋, and J/ψ→Σ（1385）＋Σ（1385）-. The branching fractions for these intermediate resonance channels are measured to be：Br（J/ψ→Ξ-Ξ＋）=（0.90±0.03±0.18）×10-3, Br（J/ψ→Σ（1385）-Σ（1385）＋）=（1.23±0.07±0.30）×10-3,and Br（J/ψ→Σ（1385）＋Σ（1385）-）=（1.50±0.08±0.38）×10-3, respectively. The angular distribution is of the form dN/d（cosθ）α（1＋αcos2θ） with α=（0.35±0.29±0.06） for J/ψ→Ξ-Ξ＋, α=（-0.54±0.22±0.10） for J/ψ→Σ（1385）-Σ（1385）＋, and α=（-0.35±0.29±0.06） for J/ψ→Σ（1385）＋Σ（1385）-.

关键词： baryonic decays branching fraction alpha distribution