Preparation and Luminescence Poperties of Novel Phosphor for White Light-Emitting Diodes

白光LED由于具有高效、节能、环保、绿色照明、长寿命等诸多优点而越来越受到人们的重视，被预言将取代传统的照明光源－白炽灯、荧光灯等，成为第四代照明光源。荧光粉涂敷光转变法获取白光LED已经成为了发展的主流，同时也给荧光粉的发展带来了新的空间。目前已经商业化的白光LED是蓝光InGaN芯片涂覆黄色荧光粉YAG:Ce3+，但此方法得到的白光由于缺少红光成分导致显色指数偏低。为了提高白光LED的发光效率和显色指数，需要探寻新型的可被紫外光或蓝光芯片激发的白光LED用荧光粉。新型白光LED用荧光粉的制备与性能的研究引起了国内外的重视，并开展了大量地研究工作。 针对YAG黄色荧光粉热性能不高、传统红色...White light-emitting diodes (LEDs) have drawn much attention owing to their excellent properties, such as high luminous efficiency, low power consumption, environment friendly, reliability, long life and so on. White LEDs show high potential for replacement of conventional lighting like incandescent and fluorescent lamps, and are considered as the fourth generation solid-state lighting. T...学位：博士后院系专业：物理与机电工程学院_凝聚态物理学号：201117003

基于iPhone移动平台的网上导购客户端软件技术研究

本文首先介绍基于iOS的开发技术,然后讨论一款基于明星时尚穿着的网上导购客户端软件设计原则以及关键细节

Platinum-nickel alloy excavated nano-multipods with hexagonal close-packed structure and superior activity towards hydrogen evolution reaction

铂镍合金在氢析出(HER)、氧还原(ORR)等重要能量转化反应中具有优异催化性质，受到了人们广泛的关注。近日，谢兆雄教授课题组通过简单的溶剂热方法，首次合成出六方晶系的铂镍合金枝状纳米晶，其中每个枝杈结构由六个{11-20}高能晶面裸露的超薄纳米片组装而成。与面心立方晶系铂镍合金相比，亚稳态的六方晶系铂镍合金在HER反应中表现出更加优异的性质。当电流密度为10 mA·cm-2时，其过电位仅有65 mV，同时质量电流密度高达3.03 mA·µgPt-1 (-70 m V vs. RHE)，是目前为止报道的HER催化剂中质量活性最高的，其突出的催化性能主要来源于晶相作用(同质异晶)及大的比表面积。该项工作为发展高催化性能的铂基合金纳米晶提供了新的研究思路。该研究是在谢兆雄教授和蒋亚琪副教授指导下，与傅钢教授共同合作完成。实验部分由博士生曹振明（第一作者）、陈巧丽、沈守宇、卢邦安，硕士生李慧齐以及博士后张嘉伟共同完成，理论计算部分由傅钢教授课题组完成。【Abstract】Crystal phase regulations may endow materials with enhanced or new functionalities. However, syntheses of noble metal-based allomorphic nanomaterials are extremely difficult, and only a few successful examples have been found. Herein, we report the discovery of hexagonal close-packed Pt–Ni alloy, despite the fact that Pt–Ni alloys are typically crystallized in face-centred cubic structures. The hexagonal close-packed Pt–Ni alloy nano-multipods are synthesized via a facile one-pot solvothermal route, where the branches of nano-multipods take the shape of excavated hexagonal prisms assembled by six nanosheets of 2.5nm thickness. The hexagonal close-packed Pt–Ni excavated nano-multipods exhibit superior catalytic property towards the hydrogen evolution reaction in alkaline electrolyte. The overpotential is only 65mV versus reversible hydrogen electrode at a current density of 10 mAcm-2 , and the mass current density reaches 3.03mA µgPt-1 at -70mV versus reversible hydrogen electrode, which outperforms currently reported catalysts to the best of our knowledge.This work was supported by the National Basic Research Program of China (Grant 2015CB932301), the National Natural Science Foundation of China (Grants 21333008, 21603178 and J1030415) and the Natural Science Foundation of Fujian Province of China (No. 2014J01058). 该研究工作得到科技部（批准号：2015CB932301）、国家自然科学基金委（批准号：21333008, 21603178 和 J1030415）和福建省自然科学基金委（No. 2014J01058）的大力资助与支持

构建平台 吸纳精英——分析测试中心的建设与管理创新

介绍了该校分析测试中心通过构建大型仪器设备共享平台,在管理体制、管理经验、队伍建设等的实践与探索。新机制的建立为学科建设、研究提供了高水平的研究平台。学院吸纳多名国内外学术精英

Protective effect of Gastrodine on acute focal cerebral ischemia injury in rats

目的探讨天麻素(gASTrOdInE,gAS)对大鼠局灶性脑缺血损伤的保护作用及机制。方法线栓法制备大鼠大脑中动脉栓塞模型,缺血2 H后再灌注。天麻素(5,10,20 Mg/kg)再灌注同时腹腔给药,再灌注后24 H,测定大鼠神经功能缺失评分和脑梗死体积,伊文思蓝法观察血脑屏障破坏程度,WESTErn blOT检测梗死半暗带皮层组织炎症因子Tnf-α、Il-1β和Il-6的蛋白表达。结果天麻素(10,20 Mg/kg)能改善大鼠脑缺血后神经功能缺失,减小脑梗死体积,降低血脑屏障的通透性。天麻素(20 Mg/kg)对梗死半暗带皮层组织Tnf-α表达的抑制率为24%,对Il-1β表达的抑制率为34%,对Il-6表达水平的抑制率为38%。结论天麻素可降低血脑屏障的通透性,其通过减低炎症反应而对局灶性脑缺血损伤发挥保护作用。Objective To investigate the role of Gastrodine(Gas) in focal cerebral ischemia reperfusion injury and illustrate its possible mechanisms.Methods Focal cerebral ischemia was induced by middle cerebral artery occlusion in rats for 2 h and then reperfusion.Gas( 5,10,20 mg /kg) were intragastrically administered at the same time of reperfusion.The neurological deficit score,infarct volume and the extravasation of EB were determined 24 h after reperfusion.The expression of TNF-α,IL-1β,IL-6 proteins were detected by western blot.Results Gas(10,20 mg /kg)ameliorated neurological dysfunction,reduced infarct volume and decreased the extravasations of EB.Gas(20 mg /kg) decreased the expression of TNF-α,IL-1β,IL-6 in penumbra tissues,and the inhibition rates were 24%,34% and 38%.Conclusion Gastrodine exerts protective effect against acute focal cerebral ischemia reperfusion injury by reducing inflammation in brain tissue and permeability of blood-brain barrier

Influence on the morphology and blood flow volume of the gastric mucosa in rats with acute gastric ulcer treated by moxibustion

目的:研究艾灸对急性胃溃疡大鼠胃黏膜组织形态的变化和血流量的影响,探讨艾灸促进胃黏膜损伤修复的生物学机制。方法:将大鼠随机分为正常组、模型组、胃经穴组和对照点组,采用束缚冷应激法制作急性胃溃疡大鼠模型,光镜下观察大鼠胃黏膜溃疡指数,多导生理记录仪检测大鼠胃黏膜血流量。结果:与模型组比较,胃经穴组大鼠的胃黏膜溃疡指数值均降低,胃黏膜形态学明显改善,胃黏膜血流量显著增加(P<0.01);与对照点组比较,胃经穴组大鼠胃黏膜溃疡指数、形态学和血流量改善更为明显(P<0.01)。结论:艾灸可增加胃黏膜血流量,促进胃黏膜的损伤修复,并且存在一定的经脉脏腑相关性。Objective: To study the biological repair mechanisms of gastric mucosa damage, through the effect of morphology and blood flow volume of gastric mucosa in rats with acute gastric ulcer treated by moxibustion.Methods: rats were randomly divided into normal group, model group, stomach meridian group, control point group.Except for the normal group, all the rats were established into the gastric mucosa injury model by cold restrain stress.Gastric mucosal injury index in rats wereobserved by light microscopy, the gastric mucosal blood flow volume in rats were tested by the physiological recorder detection.Results: Compared with the model group, the gastric mucosa ulcer index was decreased, the gastric mucosa morphology was significantly improved, gastric mucosal blood flow volume was significantly increased in stomach meridian group(P<0.01).The gastric mucosa ulcer index, gastric mucosa morphology and blood flow volume in stomach meridian group were improved significantly than those in control point group(P<0.01).Conclusion: Moxibustion on the stomach meridian could increase the gastric mucosal blood flow volume, promote the repair of gastric mucosa injury, and there is a certain correlation between meridians and viscera.国家自然科学基金项目(No.30960484;No.81260556)~

Research of pharmacological effect basis of usual clinical medications with camellia oil

目的探讨茶油多种临床用药可能的药理药效基础。方法将油茶籽经两次95%的乙醇回流提取后浓缩至不含乙醇和水的提取物,取其中的茶油部分作为试验药物;用肿瘤坏死因子-α(Tnf-α)处理人乳腺癌细胞系(MCf-7)细胞建立细胞炎症模型,进一步用蛋白质印迹技术观察药物处理对细胞炎症因子Iκb-α表达的影响进而评价茶油是否具有抗炎活性。结果从油茶籽提取得到的茶油显著地抑制细胞中Tnf-α诱导的Iκb-α的降解从而抑制炎症发生。结论茶油对细胞显示良好的抗炎作用,这种特性可能是其临床应用于治疗皮肤过敏、暗疮、疥癣、小儿红屁股、以及皮肤烧烫伤等多种与炎症相关疾病的药理基础之一。Objective To explore the possible pharmacological effect basis of usual clinical medications with camellia oil.Methods After twice 95% ethanol reflux extraction of camellia seed, the solution was concentrated to the extractive without ethanol and water.Camellia oil in the extractive was taken as study drug.Human breast adenocarcinoma cell line(MCF-7) cell was managed by tumor necrosis factor(TNF)-α to build a cell inflammation model.Influence of drug treatment on cell inflammatory cytokines IκB-α was observed by Western blot, in order to make evaluation on whether camellia oil possesses anti-inflammatory activity.ResultsCamellia oil extracted from camellia seed had significantly inhibiting effect on degradation of IκB-α induced by TNF-α, so as to suppress occurrence of inflammation.Conclusion Camellia oil has precise anti-inflammation effect on cells, and this effect may be one of its pharmacological basis for treating inflammation related diseases as skin allergy, pimples, scabies, pediatric bunda vermelha, skin burn and scald.厦门市科技计划项目(项目编号:3502Z20123015); 国家自然科学基金(项目编号:81102332

植物挥发性气体(VOCs)研究进展

植物挥发性气体(VOCs)在植物-植食性昆虫-天敌三级营养关系、植物间信息传递及适应性改变上都发挥着重要作用。植物释放VOCs具特异性、系统性、时序性与节律性等特点,VOCs主要在寄主选择行为、产卵行为、求偶行为、引来昆虫天敌干涉等方面影响植食性昆虫。VOCs介导的植物间信息传递作用包括4个过程:"释放者"植物合成及释放气体、气体在空气中的运输、气体在植物表面的吸附及"接收者"植株对气体信号的感知。收集VOCs的方法主要有吸附-溶剂洗脱法和吸附-热脱附法

靶向人类免疫缺陷病毒1型(HIV-1)整合酶多肽药物表达载体的构建

目的构建人类免疫缺陷病毒1型(HIV-1)整合酶(IN)表达载体用于双分子荧光互补技术筛选多肽药物。方法PCR扩增HIV-1 IN的全长基因序列,将目的片段插入至pBiFc-VN173载体中,并对重组质粒pBiFc-VN173-IN进行双酶切及测序鉴定。将重组质粒pBiFc-VN173-IN和对照组质粒pBiFc-VN173分别转染HEK293T细胞,采用Western blot法和免疫荧光细胞化学染色法检测IN的表达。结果通过高保真PCR、载体构建和鉴定,成功获得IN表达载体pBiFc-VN173-IN。与对照组相比,通过Western blot法和免疫荧光细胞化学染色法证实转染质粒pBiFc-VN173-IN载体的HEK293T细胞表达IN。结论成功构建了IN表达载体,该载体可用于和IN相互作用的多肽药物的双分子荧光互补技术筛选。福建省教育厅中青年教师教育科研项目(JAT171033

Effects of mowing plus waterlogging on germination and seedling growth of Spartina alterniflora

互花米草(Spartina alterniflora)是我国危害最严重的外来入侵植物之一,探索环保、经济、有效地防治互花米草的技术对保护我国海滩生态环境具有重要意义。本研究通过人工气候室(20~25℃)的盆栽实验,研究刈割与淹水对互花米草萌发和幼苗生长的影响。实验持续4个月,对互花米草地上部分进行了2次刈割,首次刈割是在互花米草生长季结束时,3个月后进行第二次刈割。首次刈割后持续淹水至实验结束,淹水处理设计0、5、10、20 cm四个淹水深度。首次刈割后各淹水处理互花米草根茎上迅速萌发克隆苗,种子的萌发比克隆苗晚约3个月。不同淹水深度对克隆苗的萌发和生长均有抑制作用,克隆苗株数、株高和地上生物量均随淹水深度增加而减少。第二次刈割后各淹水处理均没有再萌发克隆苗,但有少量种子实生苗,其中20 cm水深处理的实生苗数量最少。刈割加淹水可以很好地抑制互花米草的萌发和幼苗生长,据此建议互花米草防治方案为:在春季萌芽前,修筑堤坝,保持淹水20 cm,在营养生长期后期贴地刈割互花米草,继续淹水,第二年重复同样的刈割和淹水。为防止二次入侵,需要在邻近的互花米草分布区同时进行治理。&nbsp;</p