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Versatile and scalable chemical vapor deposition of vertically aligned MoTe2 on reusable Mo foils

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Nano Research 2020年第9期13卷 2371-2377页

作者： Jinjun lin hong wang Roland Yingjie Tay hongling li Maziar Shakerzadeh Siu Hon Tsang zheng liu Edwin Hang Tong Teo School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Temasek Laboratories@NTU 50 Nanyang AvenueSingapore 639798Singapore School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

Layered MoTe2 has shown great promises for optoelectronics and energy-storage applications due to its exceptional optical and electrochemical *** date,considerable efforts have been devoted to fabricating layered MoTe2 with lateral orientation by means of mechanical/chemical exfoliation and chemical vapor deposition(CVD)*** compared to its horizontal counterparts,vertically aligned MoTe2 with higher density of active edge sites is expected to possess unique optoelectronic and electrochemical properties,while which has not been reported *** this work,we report a versatile and scalable CVD growth of vertically aligned MoTe2 with length of up to〜7.5 fjm on Mo ***,the dominant phase of the vertically aligned MoTe2 can be tuned from 2H to 1T’by increasing the growth temperature from 630 to *** to the weak interaction between the as-grown MoTe2 and Mo foil,the as-grown MoTe2 can be easily detached from the Mo *** in turn enabled economic reuse of the Mo foil for multiple ***,the vertical growth of the MoTe2 is proposed to be caused by the internal strain generated during tellurization of Mo ***,the as-grown MoTe2 can also be directly dispersed in solvent to produce high-quality MoTe2 *** versatility of this growth strategy was further demonstrated by fabricating other vertically aligned transition metal chalcogenides(TMDs)such as TaTe2 and ***,this work paves the path towards achieving unique TMDs structures to enable high-performance optoelectronic and electrochemical devices.

关键词： molybdenum dltelluride chemical vapor deposition vertical growth reusable substrate

Bronchiolar adenoma with unusual presentation:Two case reports

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World Journal of Clinical Cases 2022年第14期10卷 4541-4549页

作者： Ying Du zheng-yan wang zheng zheng Ying-Xue li Xiu-Yu wang Ran Du Department of Pathology The Affiliated Hospital of Shandong First Medical University(Liaocheng People’s Hospital)Liaocheng 252000Shandong ProvinceChina

BACKGROUND The clinicopathological features,immunohistochemical characteristics,and genetic mutation profile of two unusual cases of distal bronchiolar adenoma are retrospectively analyzed and the relevant literature is *** SUMMARY Case 1 was a 63-year-old female patient who had a mixed ground-glass nodule,with mild cells in morphology,visible cilia,and bilayer structures in focal *** staining for P63 and cytokeratin(CK)5/6 revealed the lack of a continuous bilayer structure in most areas,and no mutations were found in epidermal growth factor receptor,anaplastic lymphoma kinase,ROS1,Kirsten rat sarcoma,PIK3CA,BRAF,human epidermal growth factor receptor-2(HER2),RET,and neuroblastoma RAS *** 2 was a 58-year-old female patient who presented with a solid nodule,in which most cells were observed to be medium sized,the nuclear chromatin was pale and homogeneous,local cells had atypia,and cilia were found *** staining for P63 and CK5/6 showed no expression of these proteins in mild cell morphology whereas the heteromorphic cells showed a bilayer *** same nine genes as above were analyzed,and HER2 gene mutation was *** Some unresolved questions remain to be answered to determine whether the lesion is a benign adenoma or a part of the process of malignant transformation from benign adenoma of the bronchial ***,whether lesions with atypical bilayer structures are similar to atypical hyperplastic lesions of the breast remains to be ***,clarity on whether these lesions can be called atypical bronchiolar adenoma and whether they are invasive precursor lesions is *** studies should examine the diagnostic significance of HER2 gene mutation as a prognostic indicator.

关键词： Bronchiolar adenoma Human epidermal growth factor receptor-2 gene Thoracic tumors Cellular atypia Ciliated muconodular papillary tumor Case report

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山东省生态环保产业“走出去”路径探究

中国环保产业 2024年第7期 59-62页

作者：郑甜甜王妍王婷李云芳中国环境保护产业协会北京100045 国能龙源环保有限公司北京100089

山东省生态环保产业具有结构完整、创新能力活跃,但分布不均、集群乏力等特点。为推动生态环保产业“走出去”,山东省应利用自身优势,深化国际标准合作,促进技术交流,推进绿色金融,构建信息共享平台,提升企业竞争力,实现产业可持续与国... 详细信息

山东省生态环保产业具有结构完整、创新能力活跃,但分布不均、集群乏力等特点。为推动生态环保产业“走出去”,山东省应利用自身优势,深化国际标准合作,促进技术交流,推进绿色金融,构建信息共享平台,提升企业竞争力,实现产业可持续与国际化发展。

关键词：山东省生态环保产业国际合作

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水平初位移下基础隔震结构现场动力特性测试

振动工程学报 2024年第4期37卷 578-587页

作者：吴应雄董昕珺廖文彬林友勤唐贞云郑国琛商昊江福州大学土木工程学院福建福州350108 福建省建筑设计研究院有限公司福建福州350100 北京工业大学城市与工程安全减灾教育部重点试验室北京100124 福建江夏学院工程学院福建福州350108 福建省建筑科学研究院有限责任公司福建福州350100

应用被动控制技术建成的隔震建筑,其隔震性能缺乏检测手段,因此进行隔震结构动力特性的现场测试具有重要意义。现场测试1栋4层基础隔震幼儿园,展示了试验装置、方法及所得结果,将结果与同条件下非隔震结构模型进行对比分析,探究实际隔... 详细信息

应用被动控制技术建成的隔震建筑,其隔震性能缺乏检测手段,因此进行隔震结构动力特性的现场测试具有重要意义。现场测试1栋4层基础隔震幼儿园,展示了试验装置、方法及所得结果,将结果与同条件下非隔震结构模型进行对比分析,探究实际隔震结构动力响应规律及减震效果。用液压千斤顶将建筑物推开使隔震层产生98 mm(对应LNR500剪应变102%)水平初位移,安装混凝土顶杆支撑建筑物;利用炸药将顶杆爆破卸载使建筑物做自由振动;最后测试和分析其动力响应等参数。分析结果表明:水平初位移条件下,隔震结构的一阶自振周期比非隔震结构显著延长,阻尼比增大;隔震层滞回曲线饱满;各楼层动力响应控制效果明显,但观察到屋顶层相比底层加速度略有放大;卸载后隔震层瞬间复位,表明隔震层具有瞬间复位特性。

关键词：基础隔震水平初位移动力特性滞回特性复位特性

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Morphological Evolution of a-GaN on r-Sapphire by Metalorganic Chemical Vapor Deposition

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Chinese Physics Letters 2012年第2期29卷 166-169页

作者： SANG ling liu Jian-Ming XU Xiao-Qing wang Jun ZHAO Gui-Juan liu Chang-Bo GU cheng-yan liu Gui-Peng WEI hong-Yuan liu Xiang-lin yanG Shao-yan ZHU Qin-Sheng wang Zhan-guo Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesP.O.Box 912Beijing 100083

The morphological evolution of a-GaN deposited by metalorganic chemical vapor deposition (MOCVD) on rsapphire is *** influences of Ⅴ/Ⅲ ratio and growth temperature on surface morphology are investigated.Ⅴ-pits and stripes are observed on the surface of a-GaN grown at 1050 ℃ and 1100℃,*** overall orientation and geometry of Ⅴ-pits are uniform and independent on the Ⅴ/Ⅲ molar ratio in the samples grown at 1050 ℃,while in the samples grown at 1100 ℃,the areas of stripes decrease with the adding of Ⅴ/Ⅲ *** deduce the origin of Ⅴ-pits and stripes by annealing the buffer layers at different *** of the existence of inclined (10(-1)1) facets,Ⅴ-pits are formed at 1050℃.The (10(-1)1) plane is an N terminated surface,which is metastable at higher temperature,so stripes instead of V-pits are observed at 1100℃.Raman spectra suggest that the growth temperature of the first layer in the two-step process greatly affects the strain of the ***,to improve the growth temperature of the first layer in the two-step method may be an effective way to obtain high quality a-GaN film on r-sapphire.

关键词： sapphire GaN MOCVD

分布式模糊聚类微动法铁路路基岩溶地球物理探测:以皖赣铁路宁国改线工程为例

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科学技术与工程 2024年第3期24卷 924-932页

作者：王其合苏本玉王国林中铁上海设计院集团有限公司上海200070 中国矿业大学资源与地球科学学院徐州221116

微动勘探法可探查铁路路基地下岩溶、裂隙通道等不良地质体的发育位置,针对反演成果中土、岩体分界面模糊不清,异常位置及边界不准确等问题,采用分布式模糊聚类算法分析反演数据。系统回顾了微动勘探法和分布式模糊聚类算法基本原理,以... 详细信息

微动勘探法可探查铁路路基地下岩溶、裂隙通道等不良地质体的发育位置,针对反演成果中土、岩体分界面模糊不清,异常位置及边界不准确等问题,采用分布式模糊聚类算法分析反演数据。系统回顾了微动勘探法和分布式模糊聚类算法基本原理,以皖赣铁路宁国改线某区间既有铁路路基岩溶勘察为例,开展分布式模糊聚类微动勘探进行地层分层、溶洞自动划分。将分布式模糊聚类法分析前后的反演数据同时与钻探揭露结果对比发现,分布式模糊聚类算法可对分界面、异常区域进行自动有效划定,可更加准确地识别地质异常体。说明该方法可较大程度提高微动反演数据的准确率,为铁路路基工程的设计和施工提供参考。

关键词：铁路路基岩溶物探微动勘探法分布式模糊聚类

Energy and centrality dependence of light nuclei production in relativistic heavy-ion collisions

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Nuclear Science and Techniques 2022年第4期33卷 62-71页

作者： li-lin Zhu Bo wang Meng wang Hua zheng Department of Physics Sichuan UniversityChengdu 610064China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China

We study the energy and centrality dependence of deuteron and triton(helium-3)production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider(RHIC)and CERN Large Hadron Collider(LHC)using the Tsallis distribution,blast-wave(BW)model,and stationary Fokker-Planck(FP)*** study shows that good agreement can be reached between the fitting results from the stationary FP solution and the experimental data for Au+Au collisions from the beam energy scan(BES)program of RHIC at√SNN=7.7,11.5,14.5,19.6,27,39,62.4,and 200 GeV and for Pb+Pb collisions at√SNN=2.76 *** Tsallis distribution and BW model can reasonably describe the deuteron and triton(helium-3)trans verse momentum spectra obtained at RHIC and LHC.A more comprehensive comparison among the three methods suggests that the stationary FP solution is a sensible method,which is able to describe the energy dependence of the light nuclei yield ratio N_(t)N_(p)/N_(d)^(2) and provide a coherent description of deuteron and triton(helium-3)production for all centralities and various colliding energies at RHIC and LHC.

关键词： light nucleiproduction Heavy-ioncollisions Tsallis distribution Blast-wavemodel Fokker–Planck solution

组织关系视角下全域土地综合整治多元主体协同治理的逻辑框架与网络形式

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自然资源学报 2024年第4期39卷 912-928页

作者：李秋芳汪文雄崔永正陈丹玲华中农业大学公共管理学院武汉430070

多元主体协同治理是乡村振兴背景下推动全域土地综合整治高质量发展的必然要求,为整合多方资源要素、协调多元主体行动、提升整治效率提供了有效路径。从组织关系视角构建全域土地综合整治多元主体协同治理的逻辑框架,以湖北省J县GQ镇为... 详细信息

多元主体协同治理是乡村振兴背景下推动全域土地综合整治高质量发展的必然要求,为整合多方资源要素、协调多元主体行动、提升整治效率提供了有效路径。从组织关系视角构建全域土地综合整治多元主体协同治理的逻辑框架,以湖北省J县GQ镇为例,采用社会网络分析法构建包含命令传递、资源流动和信息沟通的多元主体协同治理网络,并分析网络结构特征,采用指数随机图模型剖析这些网络的内外生机制。结果显示:(1)案例区全域土地综合整治中三个网络密度较低,尚未形成紧密联系的多元主体协同治理体系;(2)命令传递网络和资源流动网络具有典型的“核心—边缘”结构和“小世界”特征,存在以县政府、镇政府为中心的命令传递集群和以施工企业为中心的资源流动集群,大量农村集体和村民位于网络边缘未发挥主体作用;(3)三个网络的形成不同程度上受互惠性、核心—边缘结构效应、传递闭合效应、连通效应等内生机制和主体属性、夹带效应等外生机制的影响。据此提出,为提高全域土地综合整治多元主体协同治理的有效性,应强化核心主体的稳定作用,搭建多元化参与渠道,发挥农村集体和村民的内生动力。

关键词：组织关系全域土地综合整治多元主体协同治理社会网络分析指数随机图模型

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红景天苷对缺血性脑损伤大鼠的作用

中国药理学通报 2024年第5期40卷 873-880页

作者：吴青青吴慧玲周彬彬余正双杨泽霖赖文芳洪桂祝福建中医药大学药学院福建福州350122

目的基于超高效液相色谱-电喷雾-串联质谱(UPLC-ESI-MS/MS)技术研究红景天苷(salidroside,Sal)的血脑屏障(blood brain barrier,BBB)穿透性,并通过网络药理学、分子对接技术和动物实验探讨Sal治疗缺血性脑卒中(ischemic stroke,IS)的作... 详细信息

目的基于超高效液相色谱-电喷雾-串联质谱(UPLC-ESI-MS/MS)技术研究红景天苷(salidroside,Sal)的血脑屏障(blood brain barrier,BBB)穿透性,并通过网络药理学、分子对接技术和动物实验探讨Sal治疗缺血性脑卒中(ischemic stroke,IS)的作用靶点及机制。方法利用UPLC-ESI-MS/MS技术研究Sal的BBB穿透性;运用多个数据库预测Sal的作用靶点和IS的疾病靶点,构建PPI网络并筛选核心靶点,进行GO和KEGG富集分析,并通过分子对接技术和动物实验进行验证。结果Sal给药正常大鼠和MCAO大鼠后,血浆和脑组织中均检测到Sal原形和代谢物酪醇;网络药理学共筛选出Sal治疗IS的作用靶点191个,GO功能富集分析主要涉及蛋白水解、细胞迁移的正调控等生物过程;KEGG通路分析提示PI3K-Akt、MAPK、FOXO等信号通路在Sal治疗IS过程中发挥关键作用;分子对接结果显示,Sal与对接的核心靶点均有良好的结合能力;动物实验结果表明,Sal可以明显改善MCAO大鼠的神经功能损伤,明显增加缺血侧Nissl阳性细胞的数量,促进核心靶点VEGF、EGFR和IGF1蛋白的表达,抑制IL-6和MMP9蛋白的表达。结论Sal能够穿透BBB,进入中枢神经系统发挥药理作用;网络药理学预测了Sal治疗IS的核心靶点,包括VEGFA、EGFR、IL-6、MMP9、IGF1、CASP3、ALB、SRC,通过动物实验验证了Sal对部分核心靶点的作用,为今后临床进一步探讨Sal治疗IS的作用机制提供参考依据。

关键词：红景天苷缺血性脑卒中网络药理学分子对接 VEGF

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