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Chinese Chemical Letters 2009年第3期20卷 344-347页

作者： xue Mei Liao Wei chu Yang Li FU Dong Zhoua Shi Zhong Luo Department of Chemical Engineering Sichuan University Chengdu 610065 China Research Institute of Natural Gas Technology Petrochina Southwest Oil and Gas Field Company Chengdu 610213 China

Mesoporous silica supported Cs2.5H0.5PW12O40 catalysts were prepared by impregnation method, and several silica supports with different pore size were utilized. N2 adsorption, XRD and ICP-AES techniques were utilized to characterize the silica supports and catalysts. XRD results showed that the dispersion of Cs2.5H0.5PW12 was better for the silica support with larger pore size. The catalytic activity results showed that the pore size played important role on the catalyst activity and the molecular weight of PTHF. When Cs2.5H0.5PW12O40 was dispersed on larger pore size silica support, the catalysts showed good performances for the synthesis of PTHE The molecular weight of PTHF product on the sample in which Cs2.5H0.5PW12O40 was dispersed on larger pore support was higher than that on the catalyst with smaller pore support. The leaching amounts of the active components for the supported Cs2.5H0.5PW12O40 catalysts were much lower. After five reaction cycles, there were still good activities and stabilities for the supported Cs2.5H0.5PW12O40 catalysts with larger pore silica supports. These results were much better than those of the supported heteropolyacid H3PW12O40 catalyst.

关键词： PTHF synthesis Cs2.5H0.5PW12O40 catalysts Mesoporous silica Pore size Stability

Design of 2.1GHz CMOS Low Noise Amplifier

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The Journal of China Universities of Posts and Telecommunications 2006年第1期13卷 71-74页

作者： LI En-ling SONG Lin-hong YANG Dang-qiang xue Ying chu Meng Science School Xi'an University of Technology Xi'an 710048 P.R. China

This paper discusses the design of a fully differential 2.1 GHz CMOS low noise amplifier using the TSMC 0.25 μm CMOS process. Intended for use in 3G, the low noise amplifier is fully integrated and without off-chip components. The design uses an LC tank to replace a large inductor to achieve a smaller die area, and uses shielded pad capacitances to improve the noise performance. This paper also presents evaluation results of the design.

关键词： LNA LC tank noise figure shielded pads

Air-stable inorganic solid-state electrolytes for high energy density lithium batteries: Challenges, strategies, and prospects

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InfoMat 2022年第1期4卷 3-22页

作者： Xuanfeng Chen Zengqiang Guan Fulu chu Zhichen xue Feixiang Wu Yan Yu School of Metallurgy and Environment Hunan Provincial Key Laboratory of Nonferrous Value-added MetallurgyEngineering Research Center of the Ministry of Education for Advanced Battery MaterialsCentral South UniversityChangshaChina Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringCAS Key Laboratory of Materials for Energy ConversionNational Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefeiChina

Solid-state batteries have been considered as promising next-generation energy storage devices for potentially higher energy density and better safety compared with commercial lithium-ion batteries that are based on organic liquid ***,in terms of indispensable solid-state electrolytes,there are remaining issues to be solved before entering the *** solid-state electrolytes are air-sensitive,which causes a complex and expensive cell assembly and impressible ***,the solid-state electrolytes are expected to be atmosphere-stable,which will undoubtedly bring significant benefits to solid-state battery *** review covers air-stabilityrelated issues of different types of inorganic solid-state electrolytes and the corresponding ***,we provide an overview of solid-state electrolytes and solid-state batteries,including their history and advantages/***,different types of solid-state electrolytes are selected as examples to illustrate the unfavorable interactions in air and the corresponding adverse ***,according to recent advances,we summarize the effective strategies of constructing different types of air-stable inorganic solid-state ***,perspectives on designing accessible air-stable solid-state electrolytes are provided,aiming to achieve the assembly of high-performance solid-state batteries in the atmosphere.

关键词： air stable high energy density Li metal Li-ion battery solid-state electrolyte

An Improved Room-Temperature Silicon Terahertz Photodetector on Sapphire Substrates

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Chinese Physics Letters 2019年第9期36卷 87-90页

作者： xue-Hui Lu Cheng-Bin Jing Lian-Wei Wang Jun-Hao chu Key Laboratory of Polar Materials and Devices(Ministry of Ed ucation) Institute of Functional MaterialsDepartment of MaterialsSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241 Shanghai Institute of Jn elligen'Electronics&SystemsFudan UniversityShanghai 200433 State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083

We design and fabricate a good performance silicon photoconductive terahertz detector on sapphire substrates at room *** best voltage responsivity of the detector is 6679 V/W at frequency 300 GHz as well as low voltage noise of 3.8 nV/Hz1/2 for noise equivalent power 0.57 pW/Hz1/*** measured response time of the device is about 9μs,demonstrating that the detector has a speed of>110 *** achieved good performance,together with large detector size(acceptance area is 3μm×160μm),simple structure,easy manufacturing method,compatibility with mature silicon technology,and suitability for large-scale fabrication of imaging arrays provide a promising approach to the development of sensitive terahertz room-temperature detectors.

关键词： Sapphire

虎红超分子体系在共振光散射光谱法测定氯霉素含量中的应用研究

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化学研究与应用 2024年第7期36卷 1618-1624页

作者：卫泽辉张笑刘文昕张俊董雪马卫兴褚朝森田美江苏海洋大学药学院江苏连云港222005 江苏省海洋药物筛选重点实验室江苏连云港卷222005 江苏联合职业技术学院连云港中医药分院江苏连云港222007

虎红是一种阴离子型生物染色素,在酸性条件下游离的羧基可以和药物分子中的羟基通过氢键相互作用形成超分子体系,用于共振光散射光谱法的定量分析。本实验以氯霉素为应用对象,详细考察了实验条件对虎红-氯霉素超分子体系共振光散射强度... 详细信息

虎红是一种阴离子型生物染色素,在酸性条件下游离的羧基可以和药物分子中的羟基通过氢键相互作用形成超分子体系,用于共振光散射光谱法的定量分析。本实验以氯霉素为应用对象,详细考察了实验条件对虎红-氯霉素超分子体系共振光散射强度的影响,获得最佳测试条件:虎红溶液浓度为4.9×10^(-4)mol·L^(-1),体积1.5 mL,盐酸体积1.0 mL,氯霉素浓度和体积分别为100μg·mL^(-1)和1.0 mL。方法学考察显示,氯霉素浓度在0-10μg·mL^(-1)范围内线性良好(y=3343.5x+21.857,R^(2)=0.9958),检出限为0.0015μg·mL^(-1),氯霉素加标样品2.0、2.5、3.0μg·mL^(-1)准确度考察,平均回收率分别为100.4%、100.5%和100.3%,相对标准偏差分别为1.4%、1.1%和1.9%(n=5)。该方法用于氯霉素滴眼液实际样品含量测定,获得标示量百分含量平均值为100.0%,RSD%为1.9%(n=6)。反应机理研究表明氯霉素和虎红的最佳结合摩尔比为1:2(mol/mol)。上述结果表明本实验开发的基于虎红超分子体系的共振光散射光谱法为氯霉素定量分析提供一种含量测定方法。

关键词：虎红超分子体系共振光散射光谱法氯霉素

桃红四物汤对大脑中动脉闭塞大鼠环状RNA表达谱的影响

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中国药理学通报 2024年第5期40卷 954-963页

作者：费长义张丽娟王倪褚福瑞余超薛苏君潘凌宇彭代银段贤春安徽中医药大学第一附属医院药学部安徽合肥230031 安徽中医药大学药学院安徽合肥230012 安徽中医药大学中药复方安徽省重点实验室安徽合肥230012

目的筛选和研究桃红四物汤(Taohong Siwu Decoction,THSWD)对大脑中动脉闭塞(middle cerebral artery occlusion,MCAO)大鼠环状RNA(circular RNA,circRNA)表达的影响,探讨THSWD的可能作用及分子机制。方法采用下一代RNA测序技术检测THSWD治疗后MCAO大鼠circRNA表达谱,并与MCAO模型组和对照组进行比较。生物信息学分析预测潜在的靶向微小RNA(micro RNA,miRNA)和mRNAs。应用GO富集分析和KEGG通路富集分析方法分析差异表达的circRNAs的潜在作用。对表达差异显著的circRNA进行RT-qPCR验证。结果MCAO组与对照组之间存在87个差异表达的circRNA,MCAO组与THSWD组之间存在86个差异表达的circRNA。其中,THSWD可逆转MCAO模型诱导的17个circRNAs。为了证明DECs靶向的mRNAs的作用,使用了GO和KEGG数据库。进一步分析表明,5个表达差异显著circRNAs表达量与测序结果相似。结论首次确定了THSWD治疗后MCAO大鼠circRNAs的全面表达谱,提示THSWD对MCAO的治疗作用可能是通过调节circRNAs的表达实现的。

关键词：桃红四物汤大脑中动脉闭塞环状RNA 生物信息学下一代RNA测序缺血性卒中

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桂东云开地区上奥陶统兰瓮组腕足动物群特征与对比

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地球科学 2024年第9期49卷 3228-3240页

作者：吴琛牛志军何垚砚张雨晨曾庆銮柯学胡昆王志宏李出安中国地质大学地质调查研究院湖北武汉430074 古生物与地质环境演化湖北省重点实验室湖北武汉430205 中国地质调查局武汉地质调查中心(中南地质科技创新中心) 湖北武汉430205 中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室江苏南京210008 广东省地质调查院广东广州510110 广东省海洋地质调查院广东广州510110

华南记录了从新元古代至早古生代多期次与超大陆聚合、裂解相关的重大地质事件,然而对于组成华南的两大块体之一的华夏地块目前尚未很好解决最基本的地层序列划分与对比,进而导致其大地构造属性及其与超大陆聚散等关系存在较大争议,因... 详细信息

华南记录了从新元古代至早古生代多期次与超大陆聚合、裂解相关的重大地质事件,然而对于组成华南的两大块体之一的华夏地块目前尚未很好解决最基本的地层序列划分与对比,进而导致其大地构造属性及其与超大陆聚散等关系存在较大争议,因而作为划分时代与对比最直接的地质证据——生物化石对华夏地块研究显得极其重要.本文报道了产于广西岑溪地区上奥陶统兰瓮组三段的腕足类化石,初步鉴定计有13属13种,以Christiania和Dedzetina两属数量最为丰富.动物群总体表现出个体小、壳体薄、丰度高、分异度中等,且以扭月贝类和正形贝类占绝对优势的特点,与区域上非典型叶月贝动物群具有一定的相似性.化石产出于泥岩、粉砂质泥岩中,推测该动物群栖居于以BA4为主体的底域生态位.经腕足类区域对比,确定赋存层位地质时代为晚奥陶世凯迪中‒晚期,为研究区上奥陶统的划分对比以及华南古地理重建增添了古生物学证据.

关键词：云开地区晚奥陶世腕足类兰瓮组华夏地块地层学.

改良BLUE方案肺超声评分在机械通气患者中的应用价值

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生物医学工程与临床 2024年第3期28卷 348-353页

作者：秦桂香储鑫吕学东朱保锋陈建荣南通大学第二附属医院急诊科江苏南通226001 南通大学第二附属医院呼吸与危重症医学科江苏南通226001

目的比较改良BLUE方案肺超声评分与传统区域评分法在机械通气患者中的应用优劣,探讨改良BLUE方案与序贯器官衰竭评估(SOFA)评分、氧合指数(OI)的相关性及其对机械通气患者预后评估的价值。方法选择南通大学第二附属医院急诊医学科行机... 详细信息

目的比较改良BLUE方案肺超声评分与传统区域评分法在机械通气患者中的应用优劣,探讨改良BLUE方案与序贯器官衰竭评估(SOFA)评分、氧合指数(OI)的相关性及其对机械通气患者预后评估的价值。方法选择南通大学第二附属医院急诊医学科行机械通气的危重症患者66例,其中男性45例,女性21例;年龄35~95岁,平均年龄72.11岁;病程2~37 d,平均病程12.03 d;疾病类型:肺炎、感染性休克等感染相关19例,心力衰竭16例,慢性阻塞性肺疾病急性发作呼吸衰竭15例,心肺复苏后11例,间质性肺炎2例,中毒2例,外伤1例。根据患者的转归情况(28 d生存或死亡)分为好转组28例与死亡组38例。分别使用改良BLUE方案、4分区、6分区、8分区及12分区评分方法对患者进行肺部超声检查,以12分区评分为对照,分别比较改良BLUE方案、4分区、6分区、8分区超声评分与12分区评分结果的相关性。记录各检查方案检查时间,比较各评分法耗时差异。分析改良BLUE方案与SOFA评分和OI的相关性。比较两组改良BLUE方案肺超声评分差异。结果在机械通气患者中,改良BLUE方案、4分区、6分区、8分区超声评分结果,均与12分区法评分结果呈正相关(r=0.98、0.94、0.96、0.95,P均<0.05),其中改良BLUE方案肺超声评分与12分区评分相关性最高。改良BLUE方案、4分区、6分区、8分区及12分区肺超声检查操作时间分别为(5.86±0.76)min、(4.86±0.71)min、(6.79±0.88)min、(8.18±1.02)min、(11.79±1.45)min,改良BLUE方案较6分区、8分区及12分区操作时间短(P均<0.05)。改良BLUE方案肺超声评分与OI呈负相关,与SOFA评分呈正相关(r=-0.42、0.25)。好转组与死亡组改良BLUE方案肺超声评分平均值分别为(12.04±5.87)分、(15.79±5.94)分。好转组改良BLUE方案肺超声评分明显低于死亡组,差异有统计学意义(P<0.05)。结论在机械通气危重症患者中,使用改良BLUE方案肺超声评分具有准确度高、耗时短的优势,更适宜在急诊环境中对机械通气危重症患者进行快速病情评估。改良BLUE方案肺超声评分对机械通气患者病情严重程度及预后有一定指导价值。

关键词：肺超声肺超声评分改良BLUE方案机械通气

Bipolarized intrinsic faradaic layer on a semiconductor surface under illumination

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National Science Review 2023年第4期10卷 114-122页

作者： Mengfan xue Zhiqiang chu Dongjian Jiang Hongzheng Dong Pin Wang Gengzhi Sun Yingfang Yao Wenjun Luo Zhigang Zou Eco-Materials and Renewable Energy Research Center (ERERC) Jiangsu Key Laboratory for Nano Technology National Laboratory of Solid State Microstructures and Department of Physics Nanjing University National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Nanjing University Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Nanjing Tech University

Interface charge transfer plays a key role in the performance of semiconductors for different kinds of solar energy utilization, such as photocatalysis, photoelectrocatalysis, photochromism and photo-induced superhydrophilicity. In previous studies, different mechanisms have been used to understand interface charge transfer processes. However, the charge transfer mechanism at the solid/liquid interface remains a controversial topic. Here, taking TiO2as a model, we find and prove, via experiments, the new characteristic of photo-induced bipolarity of the surface layer(reduction faradaic layer and oxidation faradaic layer) on a semiconductor for the first time. Different from energy level positions in the classic surface states transfer mechanism, the potential window of a surface faradaic layer is located out of the forbidden band. Moreover,we find that the reduction faradaic layer and oxidation faradaic layer serve as electron and hole transfer mediators in photocatalysis, while the bipolarity or mono-polarity of the surface layer on a semiconductor depends on the applied potential in photoelectrocatalysis. The new characteristic of bipolarity can also offer new insights into the charge transfer process at the semiconductor/liquid interface for solar energy utilization.

关键词： semiconductor surface interface charge transfer reduction faradaic layer oxidation faradaic layer faradaic layer descriptor

Fabrication and Visible Light Photocatalytic Activity of Co-doped ZnO Nanorods

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Chemical Research in Chinese Universities 2013年第6期29卷 1032-1035页

作者： LI xue LI Jin-hua LI Shi-jun FANG Xuan FANG Fang chu xue-ying WANG Xiao-hua HUJia-xin College of Information Technology Jilin Agriculture University Changchun 130118 P.R.China School of Science Changchun University of Science and Technology Changchun 130022 P.R.China

Co-doped ZnO nanorods were prepared by electrochemical deposition method in aqueous solution. lb study the as-grown samples, several characterizations were carried out. The scanning electron microscopy（SEM） images show that the samples present a rod-like shape with hexagonal cross sections and roughened surthce. There is a slight shift for （002） diffraction peak of Co-doped ZnO nanorods in XRD because Co2~ ions entered into the ZnO lattice. Energy-dispersive X-ray spectroscopy（EDS） and X-ray photoelectron spectroscopy（XPS） results also show the exist of Co in the sample. Photoluminescence（PL） spectra of the samples were observed at room tempera- ture, the UV emission of Co-doped ZnO shows a slight red shift compared with that of undoped ZnO. Thus, we can reach the conclusion that Zn2＋ ions have been substituted by Co2. ions in the ZnO samples. In addition, photocatalysis property of Co-doped ZnO nanorods was investigated under the irradiation of visible light. It was found that the degradation rate of methyl orange is increased greatly nanorods. by Co-doped ZnO nanorods in comparison to undoped ZnO

关键词： Co-doped ZnO Nanorod Electrochcmical deposition Visible light Photocatalysis