Metallophilic Interaction Facilitated Metal Coordination Polymers and Applications

一般认为，两个金属离子相互靠近时会产生静电排斥作用。上世纪八十年代的研究却表明当两个闭壳层金属离子(如Au(I)、Ag(I)、Cu(I)等)靠近至小于其范德华半径之和时，会产生弱的相互作用力，即亲金属相互作用(金属•••金属相互作用)。最近几十年来，基于金属•••金属相互作用诱导下可聚集形成低聚物或超分子聚集体的金化学备受关注。此类超分子聚集体通常因为金属•••金属相互作用的存在表现出独特的光物理特性，使其成为一类极重要的发光金属配合物。本实验室在构建基于弱相互作用的超分子体系领域开展了...It is well known that two metal cations would normally be expected to repel each other. However, two closed-shell metal cations (such as Au(I), Ag(I), Cu(I) and so on) are normally prone to attractive interactions when the M-M contacts are shorter than the sum of the van der Waals radii, which is well-known as metallophilic interaction (metal•••metal interaction). The chemistry o...学位：理学博士院系专业：化学化工学院化学系_分析化学学号：2052007015359

Epitaxy growth of ZnO/MgO and the study of doping with Nitrogen and Magnesium

氧化锌（ZnO）具有宽禁带、高激子束缚能、无毒、价格低廉、较强的抗辐射能力等优点，被广泛用于太阳能电池、液晶显示器、传感器等。另一方面，氧化锌由于其本征施主型点缺陷等呈现的是N型导电类型，很容易进行施主的掺杂，相对的，其P型的掺杂就显得相当困难，这也是制约氧化锌在应用上普及的瓶颈。同时，氧化锌单晶薄膜的质量由于异质外延的问题，存在晶格失配，热膨胀系数不同的问题，难以大幅度提升。实验中，我们利用分子束外延技术（MBE）方法在氧化镁（111）面上进行镁氮共掺氧化锌单晶生长。通过对样品进行一系列表征来研究镁的参与对掺氮氧化锌晶体生长的影响。与此同时，我们也对氧化镁（111）面上进行界面预处理的工艺研...Zinc oxide (ZnO) has the advantages of wide band gap, high exciton binding energy, non-toxic, low price, strong anti-radiation ability. It is widely used in solar cells, liquid crystal display, sensors, etc. Due to its intrinsic donor type point defects present, natural zinc oxide is N type conductivity type, meanwhile, ZnO is easy to donor doping, relative, the P type doping is very difficult, wh...学位：理学硕士院系专业：物理科学与技术学院_凝聚态物理学号：1982013115296

Radioimmunoimaging of 131 I Labeled Monoclonal Antibody JHⅢFab′ in Nude Mice Bearing Human Hepatocellular Carcinoma

用蛋白酶切技术制备MCAbJHⅢfAb′片段，回收率约10%。片段活性相当于完整MCAb的1102稀释浓度。用氯胺T法标记MCAbJHⅢfAb′，对荷人肝细胞癌bEl-7402裸鼠体内的放射免疫显像进行了研究。腹腔注射131I-MCAbJHⅢfAb′后24~96H，肿瘤部位有放射性浓聚，以48~72H影像最为清晰；而注射131I-MCAbJHⅢ肿瘤部位也有积聚现象，但本底消除更慢。131I-MCAbJHⅢfAb′注射后72H，13种器官的肿瘤组织与非瘤组织的放射性比值均大于3，肿瘤的定位指数为2.56。这表明MCAbJHⅢfAb′在肝细胞癌的诊断和指导治疗方面有更好的应用前景McAb JHⅢFab′ Fragment was prepared with pepsin digestion It′s receiving percentage was about 10% Its titer was 1∶10 2 of McAb JHⅢ McAb JHⅢFab′ Fragment was radiolabeled with 131 I by Ch T method Its distribution and radioimmunoimaging in the nude mice bearing human hepatoma BEL 7402 were studied Between 24-96 h aFter intraperitoneal administration, the image of the concentrating radioacitivity in tumor was obtained by the γ camera and it was the clearest during 48-72 h; whereas the injection of 131 I McAb JHⅢ into the nude mice resulted in an equal radioactivity in tumor, but it′s background was more slowly cleared. At 72 h aFter the injection of 131 I McAb JHⅢFab′, the radioactivity ratioes of tumor/normal tissue(T/NT) For 13 kinds of organ/tissue were all over 3, and the localization index of tumor was 2 56 These results showed that McAb JHⅢFab′ may be useFul in the localization and targeting treatment of human hepatocellular carcinom

围术期停用二甲双胍对糖尿病患者血糖及认知功能影响

目的探讨围术期停用二甲双胍,改为短效胰岛素控制血糖,对行单侧全髋关节置换术的老龄糖尿病患者术后认知功能及血糖波动的影响。方法选取自2016年1月至2017年1月大连医科大学附属二院收治的79例择期行单侧全髋关节置换术的老龄糖尿病患者为研究对象。将所有患者分为3组,平素应用二甲双胍,围术期继续应用者纳入A组(n=24),平素应用降糖方式中无二甲双胍者纳入B组(n=28),平素应用二甲双胍术前1 d改为短效胰岛素者纳入C组(n=27)。分别应用简易智能精神状态检查量表(MMSE)和蒙特利尔认知评估量表(MoCA)对患者的认知功能进行评估。结果与术前相比较,3组拔管后5 min MMSE评分均有明显降低,且A组、B组MMSE评分均高于C组,差异有统计学意义(P 0. 05)。与术前比较,3组患者拔管后5 min、术后第1、3天MoCA评分均明显降低(P 0. 05)。静止及活动时3组患者VAS评分比较,差异均无统计学意义(P>0. 05)。3组患者恶心呕吐等不良反应发生率比较,差异无统计学意义(P> 0. 05)。结论二甲双胍对术后认知功能的改变未产生明显影响。围术期改为短效胰岛素不利于稳定患者血糖,对短期轻度认知功能会产生不利的影响

Preceding Vehicle Detection Based on Multiple Scale Edge and Local Entropy

摘　要:提出一种基于多尺度边缘和局部熵原理的前方车辆的检测算法。该算法利用车辆图像的边缘和纹理等视觉特征,根据摄像机参数得到远、 中、 近距离的三个尺度的图像,用一种改进的边缘检测算法分析每幅图像的边缘,得到车辆的感兴趣区域 ROI ,最后通过应用局部熵原理来排除错误的结果。对同一帧序列用文中算法和传统算法进行测试,文中算法提高了检测的正确率,并减少了误检的数量,该算法同时适用于静止和运动的车辆,并且对中远距离车辆有较好的检测效果。 Abstract :Presents a preceding vehicle detection algorithm based on multiple scale edge and local ent ropy. Use a combination of edge and texture features of vehicle images. Firstly , three kinds of range images are obtained according to the camera parameters , then these images are analyzed by an improved edge detection method and ROI are calculated. Those ROI are filtered by local ent ropy method and vehicles are located in original images. By same sequence , test this algorithm and other classic algorithms , these experiments illust rate the vehicle detection rate of this algorithm is higher and the error rate of this algorithm is lower than other algorithms. The algorithm can detect both resting and moving cars , and it illust rates good performance for mid - range and distant cars.基金项目:厦门大学 985 二期信息创新平台资助项目;国家高技术研究发展计划(863)资助项(2006AA01Z129

基于扎根理论的消费者责任归因认知偏见研究

采用扎根理论的研究方法,分析了从网络渠道收集的有关三聚氰胺事件中消费者对于该事件责任归因的认知的相关言论资料,在此基础上分析了消费者对于该事件的责任归因的认知影响因素和作用机制,研究发现中国消费者的一些与该事件无关的固有认知偏见影响着消费者对于该事件责任归因问题的认知。本文对于认知偏见的产生原因进行了探讨与分析,并提出了三个假设

端粒、端粒酶及靶向抗衰老研究

端粒是细胞染色体末端一段高度保守的重复核苷酸序列,在基因结构的完整性及染色体稳定性方面起重要作用。端粒酶是具有逆转录酶活性的核糖核蛋白复合体,它合成端粒重复序列添至染色体末端,维持端粒长度。端粒长度与细胞衰老密切相关,是分子老化的标志物,基于端粒酶延长端粒长度是近年来抗衰老的研究热点。因此,本文查阅近几年来有关端粒与衰老研究相关文献,对端粒及端粒酶生物学功能和影响因素及与衰老关联作一归纳总结,并探讨以端粒酶为靶点的抗衰老治疗的最新进展,对今后抗衰老研究作出展望。厦门市科技计划项目(3502Z20144058)

Detection of incoherent broadband terahertz light using antenna-coupled high-electron-mobility field-effect transistors

The sensitivity of direct terahertz detectors based on self-mixing of terahertz electromagnetic wave in field-effect transistors is being improved with noise-equivalent power close to that of Schottky-barrier-diode detectors. Here we report such detectors based on AlGaN/GaN two-dimensional electron gas at 77~K are able to sense broadband and incoherent terahertz radiation. The measured photocurrent as a function of the gate voltage agrees well with the self-mixing model and the spectral response is mainly determined by the antenna. A Fourier-transform spectrometer equipped with detectors designed for 340, 650 and 900~GHz bands allows for terahertz spectroscopy in a frequency range from 0.1 to 2.0~THz. The 900~GHz detector at 77~K offers an optical sensitivity about $1~\mathrm{pW/\sqrt{Hz}}$ being comparable to a commercial silicon bolometer at 4.2~K. By further improving the sensitivity, room-temperature detectors would find applications in active/passive terahertz imaging and terahertz spectroscopy.Comment: 4.5 pages, 5 figure

从经典到非经典——谈智能科学系专业课非经典计算

从阐述智能专业的算法体系入手,介绍非经典计算课程的开设目的、内容及课程设计思路,重点阐述如何引导学生在课程中更有效地掌握与经典计算中不同的计算概念,促使学生更自主地跟踪科学前沿技术,并对智能专业如何开展专业特色课程的设计提出讨论和思考。国家自然科学基金项目(61573294

一种新型分光光度计液槽的设计及其在临床生化检验中的应用

设计并制作了可容纳塑料离心管的新型分光光度计液池。液池适用的样品体积变化范围宽(10~500μL),尤其适合于生物临床样品、强碱性介质以及大批样品的分析。该装置应用于血清蛋白质(总蛋白、白蛋白)、尿素氮、葡萄糖的测定及聚合酶链式反应(PCR)反应管的均一性检验,取得了满意的结果