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Degradation of dyestuff wastewater using visible light in the presence of a novel nano TiO_2 catalyst doped with upconversion luminescence agent

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Journal of Environmental Sciences 2005年第5期17卷 727-730页

作者： WANG Jun WEN Fu-yu zhang zhao-hong zhang Xiang-dong PAN Zhi-jun zhang Lei WANG Lei XU Liang KANG Ping-li zhang Peng Department of Chemistry Liaoning University Shenyang 110036 China Department of Environment Liaoning University Shenyang 110036 China Center of Analysis and Test Liaoning University Shenyang 110036 China

A new upconversion luminescence agent, 40CdF2·60BaF2·0.8ErO3, was synthesized and its fluorescent spectra were determined. This upconversion luminescence agent can emit five upconversion fluorescent peaks shown in the fluorescent spectra whose wavelengths are all below 387 nm under the excitation of 488 nm visible light. This upconversion luminescence agent was mixed into nano rutile TiO2 powder by ultrasonic and boiling dispersion and the novel doped nano TiO2 photocatalyst utilizing visible light was firstly prepared. The doped TiO2 powder was charactered by XRD and TEM and its photocatalytic activity was tested through the photocatalytic degradation of methyl orange as a model compound under the visible light irradiation emitted by six three basic color lamps. In order to compare the photocatalytic activities, the same experiment was carried out for undoped TiO2 powder. The degradation ratio of methyl orange in the presence of doped nano TiO2 powder reached 32.5% under visible light irradiation at 20 h which was obviously higher than the corresponding 1.64% in the presence of undoped nano TiO2 powder, which indicate the upconversion luminescence agent prepared as dopant can effectively turn visible lights to ultraviolet lights that are absorbed by nano TiO2 particles to produce the electron-cavity pairs. All the results show that the nano rutile TiO2 powder doped with upconversion luminescence agent is a promising photocatalyst using sunlight for treating the industry dye wastewater in great force.

关键词： upconversion luminescence agent nano TiO2 photocatalytic degradation visible light methyl orange

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 8090 Al-Li ALLOY

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Acta Metallurgica Sinica(English Letters) 1992年第2期5卷 89-94页

作者： LIU Yulin zhang Yun zhao hong’en HU Zhuangqi SHI Changxu Institute of Metal Research,Academia Sinica,Shentang,China Institute of Metal Research Academia Sinica Shenyang China

The change of mechanical properties of the 8090 Al-Li alloy influenced by aging is attributed to the change of δ′-phase particle size and the precipitation of S′-*** δ′-phase may easily precipitate and rapidly grow,but the S′-phase can only precipitate with a longer stage of *** precipitation of S′-phase would be promoted by cold working prior to ag- *** co-precipitation of δ′- and S′-phase could improve the strength and plastieity of the alloy,for which aging at 190℃.for 20—30 h seems to be *** addition,the precipitate free zone( PFZ)can form at high angle grain boundary and its width is over 200 nm in peak aging *** at sub-grain boundary,the formation of PFZ is difficult.

关键词： Al-Li alloy aging microstructure mechanical properties

Electrospinning of ultrafine core/shell fibers for biomedical applications

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Science China Chemistry 2010年第6期53卷 1246-1254页

作者： zhang hong,zhao ChenGuang,zhao YunHui,TANG GongWen & YUAN XiaoYan School of Materials Science and Engineering,and Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300072,China 1. School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300072 China

Because of the inherent appearance similar to the natural extracellular matrix,ultrafine fibrous membranes prepared via electrospinning exhibit widespread applications,especially in the biomedical *** modifications of coaxial and emulsion electrospinning have drawn much attention in preparation of core/shell fibers for applications as tissue engineering scaffolds and controlled delivery systems for bioactive *** to incorporation of multi-components in the electrospun core/ shell fibers,the process of coaxial and emulsion electrospinning became more *** theories have not been fully understood.A series of investigations were carried out evaluating the systematic and processing *** paper reviews advantages and potentials of electrospun core/shell fibers as well as factors influencing their formation on the basis of our research and new progress.

关键词： core/shell fibers coaxial electrospinning emulsion electrospinning controlled delivery tissue engineering

Time structure measurement of the SSRF storage ring using TRXEOL method

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Nuclear Science and Techniques 2015年第4期26卷 22-27页

作者：张招红姜政薛松郑丽芳 Shanghai Institute of Applied Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

In order to do alignment between the timing signal and the synchrotron X-ray pulse on the sample spot in the time domain,measuring time structure of the storage ring on the sample spot inside the experimental hutch is a foundational step during the time-resolved experiments using the pulsed synchrotron X-rays with the time structure defined by the storage *** this work,the method of time-resolved X-ray excited optical luminescence(TRXEOL)was designed and implemented to do the *** is based on the principle of time-correlated single photon counting *** measurement system consists of a spectrometer with a detector of photomultiplier tube,a timing system,a set of nuclear instrument modules and a luminescent material of zinc *** measurement was performed on the X-ray absorbed fine structure spectrum beamline at Shanghai Synchrotron Radiation *** results show that this method can be used to measure the time structure of the storage ring with a precision of less than 1 *** measurement system can also be used for the time-resolved research for the optical luminescent materials.

关键词：上海同步辐射装置测量系统时间结构储存环 X射线吸收精细结构光致发光材料 X射线脉冲光源

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新磷矿化公司矿山排水系统的调荷技术改造

电力需求侧管理 2006年第4期8卷 34-35页

作者：赵章红连云港新磷矿化有限责任公司江苏连云港222002

矿山企业是用电大户,地下开采的排水电能消耗量占矿山采矿总用电量的50%以上,排水电费约占采矿总成本的30%。以排水系统改造为实例,利用低谷时段排水,解决水仓总容积、水泵排水能力及排水管路排水能力3个问题。改造后,系统实现了利用低... 详细信息

矿山企业是用电大户,地下开采的排水电能消耗量占矿山采矿总用电量的50%以上,排水电费约占采矿总成本的30%。以排水系统改造为实例,利用低谷时段排水,解决水仓总容积、水泵排水能力及排水管路排水能力3个问题。改造后,系统实现了利用低谷电力,减少排水费用,达到避峰目的。

关键词：电力需求侧管理井下排水系统矿山排水系统改造

上海光源XAFS线站时间分辨X射线激发发光谱实验系统

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光谱学与光谱分析 2015年第8期35卷 2324-2328页

作者：张招红姜政薛松郑丽芳中国科学院上海应用物理研究所上海201204 中国科学院大学北京100049

介绍了上海光源XAFS线站（BL14W1）的时间分辨X射线激发发光光谱（TRXEOL）实验系统。该系统基于时间相关单光子计数法的原理设计,以同步辐射光源的脉冲特性及其良好的时间结构为基础,通过集成定时系统、光谱仪系统和核电子学系统,在国... 详细信息

介绍了上海光源XAFS线站（BL14W1）的时间分辨X射线激发发光光谱（TRXEOL）实验系统。该系统基于时间相关单光子计数法的原理设计,以同步辐射光源的脉冲特性及其良好的时间结构为基础,通过集成定时系统、光谱仪系统和核电子学系统,在国内同步辐射装置上首次实现了TRXEOL实验方法。定时系统提供同步触发电脉冲,用来标志X射线脉冲打到样品上的时刻,同步精度约6ps,延时分辨率5ps;光谱仪经光电探测器把样品发光信号转换成电脉冲,核电子学系统对定时电脉冲和发光电脉冲之间的时间差进行统计分析,可得到样品的发光衰减曲线,再结合光谱仪的扫描控制和数据获取系统,可得到样品的TRXEOL光谱。利用该实验系统可以测量发光样品的普通XEOL光谱、发光衰减曲线和TRXEOL光谱。用ZnO纳米线样品,进行了实验验证。实验得到的普通XEOL光谱能够明显区分该样品在390和500nm处的两个发光中心;得到的发光衰减曲线能够区分小于2ns的快发光过程和200ns的慢发光过程;分别在0～1,2～200和0～200ns时间窗口内测量得到了ZnO纳米线样品的TRXEOL光谱,在这3个发光时间带内得到了对应的发光信息;ZnO纳米线样品发光衰减曲线快发光峰的半高宽约为0.5ns,证明了TRXEOL系统的最小时间分辨率小于1ns。该系统在国内同步辐射装置上提供了用于研究发光材料的TRXEOL实验方法,该方法与发光模式的XAFS方法相结合,可更深入的研究发光材料的发光行为。整个实验平台操作简便、工作稳定可靠,不仅为发光材料的研究提供了研究手段,还为进一步开展发光模式XAFS和TRXEOL成像等实验方法提供技术前提。

关键词：时间分辨谱学 XEOL实验单光子计数法

Pre-existing cirrhosis is associated with increased mortality of traumatic patients: Analysis of cases from a trauma center in East China

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World Journal of Gastroenterology 2007年第42期13卷 5654-5658页

作者： Zuo-Bing Chen Lin-Mei Ni Yuan Gao Chen-Yan Ding Yun zhang Xue-hong zhao Yun-Qing Qiu Department of Emergency Surgery First Affiliated Hospital College ofMedicine Zhejiang University Hangzhou 310003 ZhejiangProvince China

AIM:To determine the impact of cirrhosis on trauma patients and define the factors predicting ***:The data on patients admitted to the trauma center from January 2000-2005 were studied *** clinical variables were recorded and compared to identify the factors differentiating cirrhotic trauma survivors from non ***'s classification criteria were derived from the reviewed charts of cirrhotic trauma patients to evaluate their predictive value in cirrhotic *** registry was also used to generate a trauma control group by matching for age,sex,abbreviated injury score(AIS)over the same period of *** outcome variables compared were mortality rate,time of ICU and hospital *** were expressed as mean ± *** data were analyzed by SPSS.11.0 statistical *** analysis was performed to identify significant medical factors for survivor and non survivors subjected to chi-square ***'s exact test and Student's t test were performed to determine the statistical difference between cirrhotic and control groups.P < 0.05 was considered statistically ***:Poor prognosis of traum patients was associated with one or more of the following findings:ascitcs,hyperbilirubinemia(more than 2 mg/dL),hypoalbuminemia(less than 3.5 mg/dL),and prolonged prothrombin time(more than 12.5 seconds).Although Child's classification was used to predict the outcome in cirrhotic patients undergoing portacaval shunt procedures,no significant difference was found in mortality rate as a function of Child's ***:Cirrhosis is associated with a highermortality,a longer time of ICU and hospital stay of trauma *** seems that treatment of trauma patients with pre-existing severe liver disease is a challenge to surgeons.

关键词： Pre-existing cirrhosis Trauma Mortality rate

Constructing Donor–Acceptor‑Linked COFs Electrolytes to Regulate Electron Density and Accelerate the Li^(+)Migration in Quasi‑Solid‑State Battery

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Nano-Micro Letters 2025年第1期17卷 456-471页

作者： Genfu zhao Hang Ma Conghui zhang Yongxin Yang Shuyuan Yu Haiye Zhu Yongjiang Sun hong Guo School of Materials and Energy International Joint Research Center for Advanced Energy Materials of Yunnan ProvinceYunnan UniversityKunming 650091People’s Republic of China Yunnan Yuntianhua Co. LtdR&D CenterKunming 650228People’s Republic of China Southwest United Graduate School Kunming 650091People’s Republic of China

Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal *** study reports a high-performance solid-state electrolyte thorough D–A-linked covalent organic frameworks(COFs)based on intramolecular charge transfer *** other reported COFbased solid-state electrolyte,the developed concept with D–A-linked COFs not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal *** introduced strong electronegativity F-based ligand in COF electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic conductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based *** is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)***,we anticipate that this work creates insight into the strategy for accelerating Li^(+)conduction in high-performance solid-state Li metal batteries through D–A system.

关键词： Electronic modulation engineering Donor-acceptor-linked covalent organic frameworks Quasi-solid-state Li metal battery

A retrospective study of echocardiographic cardiac function and structure in adolescents with congenital scoliosis

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Chinese Medical Journal 2009年第8期122卷 906-910页

作者： LIANG Jin-qian QIU Gui-xing SHEN Jian-xiong LEE Chia-I WANG Yi-peng zhang Jian-guo zhao hong Department of Orthopedics Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730 China

Background Patients with congenital scoliosis often also have intraspinal abnormalities and other organ defects, and few studies of the effects of congenital scoliosis on cardiac function and structure have been published. Methods A total of 215 adolescent patients with congenital scoliosis （average age, 13.58 years） underwent preoperative echocardiography and were then assigned to subgroups according to apex vertebral rotation, side of convexity, curvature severity in the coronal and sagittal planes, type of deformity, and sex. Differences between the subgroups were compared by independent-samples ttest or a one-factor analysis of variance. Results We observed statistically significant differences between patients with right-sided scoliosis curvature and those with left-sided scoliosis curvature, respectively, in left ventricular inner diameter at end-diastole （（39.39±4.66）mm vs （41.74±4.90）mm）, left ventricular inner diameter at end-systole （（24.80±3.45）mm vs （25.92±3.07）mm）, interventricular septum thickness at end-diastole （（5.66±0.98）mm vs （5.98±1.03）mm）, and posterior wall of left ventricle at end-diastole （（5.61±0.98）mm vs （6.06±1.20）mm）. When the patients were evaluated by coronal plane Cobb angle, significant differences were found between those with Cobb angle of 40°-80° and of 〉80° in left ventricular inner diameter at end-diastole （（40.97±5.06）mm vs （38.98±4.45）mm） and left ventricular inner diameter at end-systole （（25.53±3.39）mm vs （24.36±3.14）mm）, respectively. When the patients were evaluated by sagittal plane Cobb angle （〈20°, group 1; 20°-40°, group 2; 〉40°, group 3）, significant differences were found in right ventricular diameter between those with Cobb angle of 〈20° and of 20°-40° （（18.27±3.66）mm vs （16.54±3.57）mm） and in diameter of aortic root between those with Cobb angle of 20°-40° and of 〉40° （（23.83±3.39）mm vs （24.90±3.30）mm）, respectively. No significant differences were found in ejection fraction and fractional shortening between patient

关键词： congenital scoliosis echocardiography heart ventriculat function, left