Adjustable structural color and circularly polarized luminescence based on monodisperse nano/microparticles

doctoral thesi

Research on the Criminal Protection of the Virtual Property

进入21世纪后，信息技术的突飞猛进的发展已经将我们带入了一个网络化的社会，在这个社会中，人们的传统生活方式不断的受到冲击，网络虚拟财产的出现，更是更新了人们创造及掌控财产的方式。以网络游戏中的虚拟物品为例，这种产生并存在于互联网虚拟世界的无形财产虽然诞生的历史不长，但发展却异常迅速。于此相对应，关于涉及网络游戏中虚拟财产的犯罪案件越来越多。侵犯虚拟财产行为一方面损害了虚拟财产所有者（使用者）的权益，另一方则破坏正常的网络秩序，引发社会不安定因素。但从我国现有立法看，对网络虚拟财产的保护尚未有明确的规定。这一方面导致大量受害者得不到救济，另一方也导致了司法实践中对法律适用的不统一，有损法律的尊严...IN the 21st century, rapid development of information technology has led us into a networked society. The traditional way of life is under attack, virtual property changed the way of creating and controlling the property. The virtual property is developing rapid. Accordingly, the cases on virtual property are more and more. The acts of violations of virtual property have great harm, On the one han...学位：法律硕士院系专业：法学院法律系_法律硕士(JM)学号：X200612002

Research of the Multi-Object in Eddy Current Testing Simulation

传统涡流仿真模型仅包含单一求解区域,将所有物体囊括在内。随着近代工业科技的飞速发展,被检物体日趋复杂,从而使得传统涡流仿真模型的计算效率降低。将单一求解区域划分为数个子区域,可以有效克服网格模型复杂的问题。简要介绍分解区域在电磁及涡流检测中的应用。Tradition eddy current testing models have only one solution domain,including all objects.With the high speed develop of Industrial Sciences and Technology,the detected objects become complex,so the convention models are inefficiency.Decomposing the whole domain into some sub-domain is a way to overcome the problem of complex meshes.In this article,author will introduce the domain decomposition method using in electromagnetic problems and application in eddy current testing

Human depth estimation on the basis of the sample learning method under a single camera

深度图像的研究是当前计算机视觉的研究热点。从图像中获取深度信息有2种方法:1)利用深度感应器,该方法的缺点是成本高;2)基于一个场景的多幅图像或图像序列,通过求取视差,获得深度值,该方法的缺点是需要摄像机参数,专业知识要求较高。针对上述情况,提出了一种简单有效的从单摄像头捕获的人体图像中估计出人体深度信息的方法,利用深度摄像机建立人体的“表观深度“图像对,然后对单摄像头获取的彩色图像进行人体表观特征提取,根据该表观特征检索图像对数据库,并对获得的人体深度进行估计和优化。最后,在厦门大学的深度数据库上,验证了该方法的有效性。Currently,the research on depth imaging is one of the hotspots concerning computer vision.There are two methods for acquiring depth information from images:1) The utilization of depth sensors,with the disadvantage of this method being its considerable expense.2) The utilization of multiple images or a sequence of images for the same scene by calculating the optical parallax for getting depth information,with the disadvantages of this method including the requirement of camera parameters and the need for a large amount of professional knowledge.In response to the circumstances mentioned above,this paper proposes a simple and efficient method that estimates human depth information from images captured by a single camera.The basic ideas of this method include establishing many pairs of human 'appearance depth' images by use of a depth camera,extracting human appearance features from colorful images captured by a monocular camera and then searching the image pairs database according to the appearance features,and estimating and optimizing human depth information obtained from the database of the pairs of images.Finally,simulation experimental results in the Xiamen University depth database established by ourselves were found to validate the effectiveness of the proposed method.国家自然科学基金资助项目(61202143); 福建省自然科学基金资助项目(2013J05100); 厦门市科技重点项目资助项目(3502Z20123017); 湖南省自然科学基金资助项目(12JJ2040

Rigid rod-like organometallic polymers

综述了在主链上含有过渡金属和刚性共轭有机桥的聚合物,即所谓的刚性棒状金属有机聚合物的种类、制备、性质及应用。This paper summarizes the organic bridge polymers that contain transition metals and rigid rod-like organometallic polymers, i.e the categories, preparation, properties and application of the rigid rod-like organometallic polymers

Highly-Dispersed NiO Nanoparticles on SBA-15 for Oxidative Dehydrogenation of Propane to Propylene

Corresponding authors. WENGWei-Zheng, Email: [email protected]; Tel: +86-592-2185192. WAN Hui-Lin, Email: [email protected]; Tel: +86-592-2186569.[中文文摘]采用浸渍法通过改变焙烧气氛制备了系列NiO/SBA-15(wNiO=20%)催化剂,并考察了催化剂的丙烷氧化脱氢(ODHP)反应性能.实验结果表明,与在静止和流动空气中焙烧的催化剂相比,在1%NO/He(VNO/VHe=1:99)气氛中焙烧的NiO/SBA-15-NO具有优异的低温丙烷氧化脱氢制丙烯性能,在350°C时,丙烷的转化率和丙烯收率分别约达29%和13%.反应温度升至450°C时,丙烯的选择性仍保持在45%左右.X射线粉末衍射(XRD)和透射电镜(TEM)测试结果表明,1%NO/He气氛可有效抑制焙烧过程中NiO纳米颗粒的团聚,使NiO物种高分散于SBA-15的孔道中.H2-程序升温还原(H2-TPR)和O2-程序升温脱附(O2-TPD)测试结果表明,随着NiO在SBA-15上分散度的提高,催化剂的抗还原性增强,ODHP活性氧物种O-的含量增加,进而使1%NO/He气氛中焙烧的NiO/SBA-15-NO在较宽的温度范围内(350-450°C)均具有良好的丙烯选择性,并显著提高了催化剂的低温活性. [英文文摘]A series of NiO/SBA-15 (wNiO=20%) catalysts were prepared by impregnating SBA-15 with an aqueous solution of nickel nitrate followed by calcining under three different atmospheres. The resulting materials were studied with regard to the oxidative dehydrogenation of propane (ODHP) to propylene.Compared to the catalysts calcined under either static or moving air, the NiO/SBA-15-NO catalyst calcined under flowing 1%NO/He (VNO/VHe=1:99) atmosphere demonstrated greater activity for this reaction at low temperature. Propylene yield of ~13% with propane conversion of ~29% was obtained at 350 °C and the propylene selectivity remained at about 45% even when the reaction temperature was raised to 450 °C.X-ray diffraction (XRD), transmission electron microscopy (TEM), H2-temperature program reduction (H2-TPR), and O2-temperature program desorption (O2-TPD) characterizations were used to investigate the intrinsic differences between these NiO/SBA-15 catalysts. It was found that NiO species in the catalyst calcined under 1%NO/He atmosphere were highly dispersed inside the mesopores of SBA-15. With the increasing of NiO dispersion on the support, the quantity of NiO species with a reduction temperature above 450 °C increased significantly. In addition, the density of O- species on the catalyst calcined under 1%NO/He was much higher than that in the case of the other two samples. These factors are responsible for the superior performance of the NiO/SBA-15-NO catalyst for the ODHP reaction over the temperature range 350 to 450 °C.国家重点基础研究发展计划(973)(2010CB732303);国家自然科学基金(21173173,21073148,21033006);教育部创新团队项目(IRT1036);福建省重大科技专项(2009HZ0002-1)资助项

卵泡液中神经营养因子4及卵丘细胞TrkB受体与卵子发育潜能的关系

目的探索人卵泡液中神经营养因子4（NT-4）及卵丘颗粒细胞中TrkB受体的表达与卵子发育潜能的关系。方法收集2020年5月至2020年11月在中山大学附属第六医院生殖中心，因男方因素行卵胞浆内单精子注射（ICSI）治疗的63例患者的卵泡液和卵丘颗粒细胞，用ELISA检测卵泡液中NT-4水平，实时荧光定量PCR检测卵丘颗粒细胞中TrkB受体两种不同亚型TrkB-fl和TrkB-t1的表达水平，分析与卵子成熟、受精和胚胎发育的关系。结果卵泡液中NT-4水平与正常受精数（rs=0.250， P=0.048）、可利用胚胎数（rs=0.320， P=0.011）、优质胚胎数（rs=0.327， P=0.009）和优质囊胚数（rs=0.303， P=0.029）呈正相关。卵丘颗粒细胞中TrkB-t1在高囊胚形成率组（≥60%）和高优质囊胚率组（≥50%）中的表达均较低［0.86 （0.60， 1.85） vs. 2.29 （1.09， 3.44） ， P=0.008； 0.84（0.64， 1.45） vs. 1.73 （0.96， 3.14） ， P=0.031］。多重线性回归分析结果示优质胚胎数受获卵数（P=0.001）、卵泡液中NT-4水平（P=0.005）和卵丘颗粒细胞TrkB-t1表达水平（P=0.049）影响。结论人卵泡液中NT-4水平与ICSI患者卵子发育潜能正相关，其可能在卵子发育过程中发挥着重要作用。卵丘颗粒细胞中TrkB-t1的高表达与卵子发育潜能受损有关

Expression of recombinant hARRG cDNA in E.coli and purification of hARRG protein

目的　构建含重组人类抗砷相关基因 (humanarsenicresistencerelatedgene ,hARRG)的表达载体 ,诱导其在转化菌表达 ,分离纯化表达蛋白 ,研究该蛋白质的理化性质、抗砷功能和免疫活性 ,深入研究人类对砷化物的抵抗作用。方法　将hARRGcDNA开放阅读框亚克隆到原核表达载体Pet11C中 ,用异丙基 - β -D -硫代半乳糖苷 (IPTG)诱导表达蛋白质 ,利用阴离子交换柱Sepharose纯化蛋白质 ,SDS -PAGE胶电泳观察结果。 结果　将hARRGcDNA成功亚克隆到原核表达载体Pet11C中 ,并成功在大肠杆菌中表达 ,表达的hARRG蛋白占菌体蛋白的 5 %左右 ,该蛋白质被分离纯化。结论　原核表达载体Pet11C可以在大肠杆菌中表达hARRGcDNA ,可用阴离子交换柱Sepharose纯化抗砷相关蛋白质Objective To construct expression vector of the recombinant human arsenic resistance related gene (hARRG),induce its expression in DE\-3 and isolate and purify expression product,for studying the physiochemistry characteristic,function and immune activity of the protein,and further researching the arsenic resistant effects of human.Methods hARRG cDNA was subcloned into prokaryotic expression vector Pet11C.The recombinant protein expression was induced by IPTG,then,the protein was purified by anions Ion-exchange column Sepharose and examined by SDS-PAGE gel.Results hARRG cDNA was successfully subcloned into prokaryotic expression vector Pet11C and expressed in E.coli and the protein was purified by anions Ion-exchange column successfully.Conclusion Pet11C excpression vector containing hARRG cDNA wassuccessfully constructed,the cell DE\-3 transformed with expression vector capable of expression the gene and a hARRG protein could be purified by anions Ion-exchange column Sepharose.国家自然科学基金资助项目 (30 0 60 0 74

无创胚胎植入前非整倍体筛查的诊断有效性分析

目的探讨无创胚胎植入前非整倍体筛查（niPGT-A）的诊断有效性。方法收集并再次分析了2018年7月到2019年7月期间，在中山大学附属第六医院生殖医学中心因染色体相互易位，或罗氏易位经首次滋养层细胞（TE）活检（TE1）行植入前，遗传学检测被诊断为非整倍体或嵌合的患者捐献胚胎24枚。解冻捐赠胚胎行滋养层细胞活检（TE2）、内细胞团活检（ICM）并收集囊胚培养液/囊胚腔液（BCM/BF）通过高通量测序技术获得遗传信息。以ICM的结果为胚胎真实染色体结果，比较TE1、TE2及BCM/BF的核型一致性。结果TE1、TE2及 BCM/BF与相应的ICM的核型一致性分别为66.7%，87.5%和79.2%（P>0.05），任意两组之间的差异没有统计学意义（P>0.05）。结论利用囊胚培养液/囊胚腔液中的游离DNA行无创胚胎植入前非整倍体筛查可以获得与同期活检的TE2和ICM相似的诊断有效性

异体骨结合骨髓间质干细胞移植治疗骨缺损的动物实验

【目的】研究使用异体骨混合骨髓间质干细胞移植治疗骨缺损的可行性及动物实验初步结果。【方法】将15只新西兰白兔双侧桡骨造成1 cm骨缺损模型,随机选择同一只动物的一侧为实验侧,自体配对的另一侧为对照侧。将表面脱钙的同种异体骨和来源于受体的体外培养增殖的骨髓间质干细胞混合植入实验侧骨缺损,对照侧仅植入同样制作的异体骨。12周后,进行X线检查、生物力学检查和组织学检查,将结果进行对比。【结果】动物在术后12周,实验侧X线片光密度测量结果,破坏载荷时扭矩和扭角测量结果均优于对照侧;组织学评分中,实验侧骨痂量评分优于对照侧,骨连接成熟程度和骨髓发育程度两者没有明显差异。【结论】骨髓间质干细胞可以促进异体骨在移植后的成骨作用,在增多成骨量的同时不影响骨组织发育