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一种双核磷光环金属铂(Ⅱ)配合物的合成、结构及光谱性质

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南昌大学学报（理科版） 2010年第3期34卷 255-258页

作者：曹迁永李志华卢鑫刘静华南昌大学化学系江西南昌330031

以6-(4-甲基磷酸二乙酯苯基)-2,2′-二联吡啶(HL)与K2PtCl4、二(二苯基磷)甲烷(dppm)及Ag(CF3SO3)反应,得到了一种双核Pt(Ⅱ)配合物[Pt2L2(μ-dppm)](CF3SO3)***3CN。晶体结构表明,中心金属离子Pt(II)呈扭曲平面正方形构型,桥配体dppm连接两个金属中心,3.175的Pt——Pt距离表明双核配合物中存在金属-金属相互作用。该配合物在420nm及480nm(sh)低能吸收可归属为dz2(金属中心Pt(II))→π*(配体L)的MLCT跃迁。同时目标配合物在固体及乙腈溶液中均观测可归属为金属和金属相互作用到配体的电荷转移(3MMLCT)磷光发射,发射峰分别处于624及647nm。

关键词：环金属铂(Ⅱ)配合物晶体结构发光

BaWO4:Sm^3+红色荧光粉的微波合成及发光性能研究

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中国稀土学报 2020年第2期38卷 139-143页

作者：李兆曹静王永锋西安航空学院材料工程学院陕西西安710077

以WO3和BaCO3为原料,采用微波法成功合成出白光LED用类球形BaWO4基质粉体,制备了Sm^3+掺杂的BaWO4红色荧光材料。通过X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)和荧光光谱(PL)等测试手段对BaWO4:Sm^3+荧光粉的物相、微观形貌和发光... 详细信息

以WO3和BaCO3为原料,采用微波法成功合成出白光LED用类球形BaWO4基质粉体,制备了Sm^3+掺杂的BaWO4红色荧光材料。通过X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)和荧光光谱(PL)等测试手段对BaWO4:Sm^3+荧光粉的物相、微观形貌和发光性能进行表征。结果表明:微波功率700 W,反应15 min,MnO2为微波吸收剂时合成出类球形BaWO4:Sm^3+粉体。BaWO4:Sm^3+荧光粉激发峰位于405和480 nm,样品可被UV-LED及蓝光激发产生位于650 nm的红光发射。经Li^+电荷补偿后BaWO4:Sm^3+荧光粉的发射峰强度明显增强。BaWO4:Sm^3+是一种潜在的近紫外及蓝光激发白光发光二极管用红色荧光粉。

关键词：白光LED BaWO4:Sm^3+ 光致发光微波合成

A new classification for hepatocellular carcinoma with hepatic vein tumor thrombus

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Hepatobiliary Surgery and Nutrition 2020年第6期9卷 717-728页

作者： Zhen-hua Chen Kang Wang Xiu-Ping Zhang jing-Kai Feng Zong-Tao Chai Wei-Xing Guo Jie Shi Meng-Chao Wu Wan Yee Lau Shu-Qun Cheng Department of Hepatic Surgery VI Eastern Hepatobiliary Surgery HospitalSecond Military Medical UniversityShanghaiChina The National Research Cooperative Group for Diagnosis and Treatment of Hepatocellular Carcinoma with Tumour Thrombus ShanghaiChina Department of Hepatobiliary and Pancreatic Surgical Oncology The First Medical Center of Chinese People’s Liberation Army(PLA)General HospitalBeijingChina Faculty of Medicine The Chinese University of Hong KongShatinHong KongChina

Background:Hepatic vein tumor thrombus(HVTT)is a significant poor risk factor for survival outcomes in hepatocellular carcinoma(HCC)***,the widely used international staging systems for HCC are not refined enough to evaluate prognosis for these patients.A new classification for macroscopic HVTT was established,aiming to better predict ***:This study included 437 consecutive HCC patients with HVTT who underwent different *** survival(OS)and time-dependent receiver operating characteristic(ROC)curve area analysis were used to determine the prognostic capacities of the new classification when compared with the different currently used staging ***:The new HVTT classification was defined as:type I,tumor thrombosis involving hepatic vein(HV),including microvascular invasion;type II,tumor thrombosis involving the retrohepatic segment of inferior vena cava;and type III,tumor thrombosis involving the supradiaphragmatic segment of inferior vena *** numbers(percentages)of patients with types I,II,and III HVTT in the new classification were 146(33.4%),143(32.7%),and 148(33.9%),*** 1-,2-,and 3-year OS rates for types I to III HVTT were 79.5%,58.6%,and 29.1%;54.8%,23.3%,and 13.8%;and 24.0%,10.0%,and 2.1%,*** time-dependent-ROC curve area analysis demonstrated that the predicting capacity of the new HVTT classification was significantly better than any other staging ***:A new HVTT classification was established to predict prognosis of HCC patients with HVTT who underwent different *** classification was superior to,and it may serve as a supplement to,the commonly used staging systems.

关键词： Hepatocellular carcinoma(HCC) hepatic vein tumor thrombus(HVTT) staging system

Lake Sequence Stratigraphy of the Shahejie Formation in the Zhanhua Hollow, Shandong Province

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Acta Geologica Sinica(English Edition) 1997年第1期71卷 104-114页

作者： Wang Liuqi Jiang Zaixing cao Yingchang Han Wentao and Wu jing University of Petroleum, Dongying Shandong Shengli Oil Field, Dongying Shandong Fei Zhenbi and Shi Xiaoying

Two sequences can be identified in the sedimentary strata of the lower Tertiary ShahejieFormation in the Zhanhua hollow. The lowstand, lake-transgressive and highstand systemstracts were formed under the control of ancient structure, palaeotopography, palaeoclimate, sed-iment supply, marine-transgression, and so on. In the paper the authors present a composite se-quence stratigraphical section of the Shahejie Formation in this area, and expound the bounda-ries of parasequences, parasequences set and systems tracts and evolutions of lake sequencestratigraphy and sedimentology and discuss various factors controlling the lake level *** differences between lake and marine sequence stratigraphy are also indicated in the *** lake sequence stratigraphical study should be based on a synthetic analysis of structural evo-lution, palaeomagnetism, palaeoclimatic changes, geological Well logs, seismic and logging data,palaeontological data, global sea level changes, and so on. The sequence stratigraphical evolutionis closely related to the formation, development and elimination of the whole basin and thesedimentary process.

关键词： lake sequence stratigraphy sedimentology lake level fluctuation whole basin Shahejie Formation Zhanhua hollow, Shandong province

Alignment and efficiency-monitoring method of high-power fiber-to-fiber coupling

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Chinese Optics Letters 2020年第2期18卷 51-55页

作者： Qingqing Kong Yiqiu jing hua Shen Shiwei Deng Zhigang Han Rihong Zhu MIIT Key Laboratory of Advanced Solid Laser Nanjing University of Science and TechnologyNanjing 210094China School of Electronic Engineering and Optoelectronic Technology Nanjing University of Science and TechnologyNanjing 210094China

High-power fiber-to-fiber coupling is extensively used in fiber laser applications,and its performance is determined by coupling *** demonstrate a novel method for alignment and monitoring efficiency by detecting backscattering power at the fiber end *** relationship between alignment error and backscattering power is determined by simulations and *** this method,a state-of-the-art kW-level fiberto-fiber optic switch is developed(transmission efficiency>97%).It performs well for longer than 60 *** the best of our knowledge,it is the first time to establish the mathematical model based on this *** results can provide guidance in high-power fiber-to-fiber coupling.

关键词： high power fiber laser fiber-to-fiber coupling coupling efficiency alignment backscattering

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近地轨道卫星的地影预报算法

宇航学报 2016年第1期37卷 39-47页

作者：贾向华徐明陈罗婧北京航空航天大学宇航学院北京100191 航天东方红卫星有限公司北京100094

针对传统地影预报算法计算量大,不适合星载计算机进行地影时刻自主预报的问题,提出一种地影预报星上算法。通过构造降维坐标系将卫星进出地影过程转换为"星-地-日"平面内的几何问题;基于常数变易法推导出阴影条件的隐式解析公式,其方程... 详细信息

针对传统地影预报算法计算量大,不适合星载计算机进行地影时刻自主预报的问题,提出一种地影预报星上算法。通过构造降维坐标系将卫星进出地影过程转换为"星-地-日"平面内的几何问题;基于常数变易法推导出阴影条件的隐式解析公式,其方程系数可由实时轨道参数确定。为简化计算,将星上算法设计为双层结构:构造迭代算法,依据实时轨道参数可精确预报卫星在每个节点上的地影时刻;而在任意两个节点之间采用解析算法进行近似预报。仿真结果表明,星上算法的预报精度高且计算量小,适合星载计算机进行地影时刻自主预报。

关键词：阴影预报发生条件预报算法星上算法

Interfacial pressure distribution and bonding characteristics in twin-roll casting of Cu/Al clad strip

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Transactions of Nonferrous Metals Society of China 2022年第9期32卷 2965-2978页

作者： Jun-peng ZHANG hua-gui huaNG jing-na SUN Ri-dong ZHAO Miao FENG National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao 066004China School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China

The mechanical properties and product thickness specifications of bimetallic clad strip prepared by twin-roll casting are tightly related to the mechanical behavior of bonding interface *** thermal−flow coupled simulation and the interface pressure calculation models are established with the cast-rolling velocity as the *** results show that the interface temperature decreases,the interface pressure and the proportion of the thickness of the Al side increase with the decrease in cast-rolling *** thinning of Cu strip mainly occurs in the backward slip *** higher pressure and longer solid/semi-solid contact time make the interface bonded fully,which provides favorable conditions for atomic *** inter-diffusion zone with a width of 4.9μm is attained at a cast-rolling velocity of 2.4 m/min,and the Cu side surface is nearly completely covered by ***,the ductile fracture occurs on the Al side,which prevents the propagation of interface delamination cracks ***,shear effect becomes more significant at high interfacial pressure and large plastic strain,and the microstructure on Al side is composed of slender columnar ***,the metallurgical bonding and refinement of grains on the Al side can result in higher bonding strength and tensile properties of the clad strip.

关键词： Cu/Al clad strip cast-rolling velocity bonding interface twin-roll casting

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RP-3航空煤油替代燃料简化机理及其验证

航空动力学报 2016年第12期31卷 2878-2887页

作者：颜应文戴超李井华南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室南京210016

选定正癸烷作为RP-3航空煤油单组分替代燃料,建立了一种包含36组分62步基元反应的简化机理.并设计了本生灯预混预蒸发试验系统对RP-3航空煤油的火焰进行了试验研究.同时,采用两种已被验证的煤油简化机理(分别为23步和38步)及62步简化机... 详细信息

选定正癸烷作为RP-3航空煤油单组分替代燃料,建立了一种包含36组分62步基元反应的简化机理.并设计了本生灯预混预蒸发试验系统对RP-3航空煤油的火焰进行了试验研究.同时,采用两种已被验证的煤油简化机理(分别为23步和38步)及62步简化机理对本生灯预混预蒸发燃烧火焰进行数值模拟,并将计算结果和试验数据相对比.结果表明:在轴向,温度和CO_2体积分数呈先上升后下降的趋势,并且温度在距喷口轴向距离为0.020m时达到最大值;而O_2体积分数呈现下降后上升的趋势,并且距喷口轴向距离为0.025m时达到最小值.与38步简化机理和23步简化机理所获得的数据相比,在各工况下,62步简化机理计算所获得的火焰温度分布和O_2体积分数分布与试验数据能很好地吻合;同时,62步简化机理计算的CO_2体积分数分布与试验数据变化规律基本一致,而23步和38步机理的计算结果只能保持和试验数据变化趋势的一致性.因此,选定的正癸烷可作为RP-3航空煤油的单组分替代燃料,并且所获得的62步简化机理能在较大范围内反映RP-3航空煤油的燃烧性能.

关键词：航空煤油正癸烷简化机理火焰温度燃气组分

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焊缝非匹配海管表面缺陷的安全评定

焊接学报 2005年第9期26卷 39-43页

作者：夏静霍立兴白秉仁曹军天津大学材料科学与工程学院天津300072 中国海洋石油工程股份有限公司天津300452

采用欧洲共同体提出的工业结构完整性评定方法(SINTAP),对给定裂纹尺寸和载荷条件下的EH36管线钢焊接接头焊趾处的表面裂纹进行评定。由拉伸试验得到的焊缝和母材的屈服强度比值大于10%,确定此次评定适用于SINTAP第二级评定,并给出二级... 详细信息

采用欧洲共同体提出的工业结构完整性评定方法(SINTAP),对给定裂纹尺寸和载荷条件下的EH36管线钢焊接接头焊趾处的表面裂纹进行评定。由拉伸试验得到的焊缝和母材的屈服强度比值大于10%,确定此次评定适用于SINTAP第二级评定,并给出二级评定图。计算结果表明,在裂纹深度a=2.2 mm,在极限裂纹长度范围内变化的裂纹,其对应的评定点均落在评定曲线定义的范围内。这说明含有该范围内裂纹的缺陷是可以验收的。比较评定结果发现,裂纹深度方向上的变化较长度方向上的变化对评定结果产生的影响更明显。

关键词：焊缝强度不匹配因子失效评定图安全评定