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moRPHoLoGY AND GRoWTH PATTERNS oF THE USRI RIVER PoINT barS, BIHAR, INDIA

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International journal of Sediment Research 2000年第4期 445-457页

作者： barendra PURKAIT ( This work was completed at the Flume Laboratory, Indian Statistical Institute, Calcutta, E-mail: bijoy@isical.ac.in Senior Geologist, map & Cartography Division, Geological Survey of India, 29, j.L. Nehru Road, Calcutta 700 016, INDI

morphology and growth patterns of four point bars of the river Usri, Bihar, India were studied by plane table mapping for two to three successive years before and after the monsoon. In plan, all these bars are crescentic in shape with downstream tail. The central parts of the bars are wider than their two ends. The bar represents aggregate of strips of sediments added laterally. The elevation contour lines demarcate the individual strips by abruptly cutting at the junction of two adjacent strips. In transverse profiles, the strips show up as series of steps. General slope of the bar is towards the adjacent channel though this slope is interrupted by these steps. In 3-dimensions, all these bars exhibit avalanche faces near the downstream end. The longitudinal profile of the bar.o.er this avalanche face resembles the profile of an asymmetrical ripple, the lee face being this avalanche face. Trenches across the avalanche face reveal cross-stratification with gradation of grain sizes within individual cross-strata, similar to the features generated in front of migrating ripples. All these features suggest that the point bar is a mega ripple (macro bedform) which migrates downstream during the high flood when the entire bar is inundated. SEPm bedform classification also records that dunes are bedforms with wave length greater than 100m and height greater than sin. The equation of relative discharge as worked out by Sundborg (personal communication) from the Chezy and manning equations, has been applied to establish a relationship between relative discharge and relative volume of sedimentation in point bars.

关键词： morphology Growth pattern Point bar Longitudinal profile Avalanche face Crossstratification Bedform

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

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微创性漏斗胸修复术后感染的处理

世界核心医学期刊文摘（儿科学分册） 2005年第12期1卷 45-45页

作者： Calkins C.m. Shew S.B. Sharp R.j. G.W. Holcomb III 王经纬 Department of Surgery Children's Mercy Hospital University of Missouri at Kansas City School of Medicine Kansas City MO 66408 United States

Pectus excavatum is frequently repaired using the minimally invasive placement of a substernal bar (Nuss procedure). Infectious complications after the Nuss procedure are potentially devastating. To date, the management of postoperative infectious complications has not been well described. methods: A retrospective review of all patients (N = 168) who underwent the Nuss procedure from january 1, 1997, to october 1, 2003, at our institution was performed. Six patients (4% ) had postoperative infections, and their medical records were reviewed. Results: of the 6 patients, 5 underwent operative drainage for wound abscesses that developed 2 to 76 weeks postoperatively. The other patient developed cellulitis 12 months postoperatively and was treated effectively with antibiotics alone. Recurrent infections were treated in 3 of 6 patients, one of whom eventually required removal of the bar resulting in a mild, residual pectus excavatum defect. one of 6 patients has had the substernal bar removed electively. The remaining 4 continue to be without clinically apparent infection at this time and are over 1 year removed from their infection. Conclusions: Although uncommon, infectious complications after the Nuss procedure require complex management strategies. Despite recurrent infection in some cases, most infectious complications occurring after the minimally invasive repair can be effectively treated without having to remove the substernal bar.

关键词：漏斗胸微创性术后感染感染并发症医疗记录脓肿引流蜂窝织炎手术切口连接杆日至

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盾构近距离下穿既有隧道掘进参数试验研究

施工技术（中英文） 2023年第19期52卷 122-127,144页

作者：郑光辉李结元王攀刘孟阳陈健武汉地铁集团有限公司湖北武汉430030 华中科技大学土木与水利工程学院湖北武汉430074 华中科技大学国家数字建造技术创新中心湖北武汉430074

新建隧道近距离下穿既有隧道,易引发既有隧道不均匀变形等问题。为保证在建地铁线盾构顺利下穿既有地铁,在隧道左线与下穿类似地层段进行试验,间隔10m设置3个与既有隧道底同深度的监测点,通过观测与分析沉降来总结下穿既有地铁线黏性土... 详细信息

新建隧道近距离下穿既有隧道,易引发既有隧道不均匀变形等问题。为保证在建地铁线盾构顺利下穿既有地铁,在隧道左线与下穿类似地层段进行试验,间隔10m设置3个与既有隧道底同深度的监测点,通过观测与分析沉降来总结下穿既有地铁线黏性土夹碎石地层的合理掘进参数。结果表明,刀盘转速1.5r/min、推进速度20~50mm/min、螺旋机转速4~13r/min、土压2.1~2.3bar、采用3%泡沫原液、每环加水量在8~9m^(3)、同步注浆压力2~3.5bar、同步注浆量在每环6.5m^(3),对地层沉降影响较小。

关键词：地铁盾构掘进参数试验监测

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： bar.o.ic decays branching fraction alpha distribution