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Research on photodarkening in rare earth doped fibers

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Journal of Rare Earths 2012年第11期30卷 1102-1105页

作者：成煜 State Key Laboratory of Optical Fibre and Cable Manufacture Technology R&D CentreYangtze Optical Fibre and Cable Company Ltd.

Samarium doped aluminosilicate fiber was fabricated by modified chemical vapor deposition （MCVd） process. The optical properties of this fiber were characterized by white light source and OSA. The photodarkening property of the fiber was measured by an Ar^＋ laser. The experiment results proved that the samarium doped aluminosilicate fiber had better photodarkening resistance than that of the samarium doped germanosilicate fiber. A brief explanation showed that the photodarkening loss could be reduced by changing the fiber core＇s material from germanosilicate to aluminosilicate. Samarium doped aluminosilicate fiber was very promising for the red fiber laser application.

关键词： fiber fabrication MCVd samarium photodarkening rare earths

Recombinant adenovirus vector Ad-hIL-10 protects grafts from cold ischemia-reperfusion injury following orthotopic liver transplantation in rats

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Hepatobiliary & Pancreatic diseases International 2010年第2期9卷 144-148页

作者： Si, Zhong-Zhou Li, Jie-Qun Qi, Hai-Zhi He, Zhi-Jun Hu, Wei Li, Yi-Ning Cent S Univ Xiangya Hosp 2 Dept Organ Transplantat Changsha 410011 Hunan Peoples R China

BACKGROUNd: Interleukin 10 (IL-10), a Th2 type cytokine, modulates inflammatory responses by inhibiting the production of proinflammatory cytokines. This study was designed to investigate the protective effects of adenovirus-mediated human IL-10 (Ad-hIL-10) gene transfer on protecting grafts from cold ischemia-reperfusion injury following orthotopic liver transplantation in rats. METHOdS: Adenoviruses encoding hIL-10 or beta-galactosidase (Ad-lacZ) were injected via the superior mesenteric vein into prospective donor animals. The donor liver was harvested 48 hours after transduction, and stored for 12 hours at 4 degrees C in lactated Ringer's solution prior to transplantation. The rats were divided into saline, Ad-lacZ, and Ad-hIL-10 groups. Liver function test, histopathological examination, reverse transcriptase-polymerase chain reaction (RT-PCR), and Western blotting were performed at 24 hours after transplantation in the three groups. RESULTS: Liver function (ALT and AST) was significantly improved, and the Suzuki score was significantly decreased in the Ad-hIL-10 group. The levels of hepatic TNF-alpha, MIP-2, ICAM-1 mRNA, and NF-kappa B protein in the Ad-hIL-10 group were significantly decreased. The expression of hIL-10 mRNA was detected by RT-PCR in Ad-hIL-10-treated grafts but not in controls treated with saline or Ad-lacZ. CONCLUSIONS: donor pretreatment with Ad-hIL-10 down-regulates the expression of proinflammatory cytokines TNF-alpha, MIP-2, and ICAM-1 mRNA. hIL-10 protects against hepatic cold ischemia-reperfusion injury, at least in part, by suppressing NF-kappa B activation and subsequent expression of proinflammatory mediators. (Hepatobiliary Pancreat dis Int 2010; 9: 144-148)

关键词： adenovirus vector interleukin 10 ischemia-reperfusion injury gene transfer

On Pairs of Linear Equations in Three Prime Variables

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Acta Mathematica Sinica,English Series 2004年第5期20卷 837-850页

作者： HongZeLI RichardJ.MCINTOSH departmentofMathematics ShanghaiJiaotongUniversityShanghai200030P.R.China departmentofMathematicsandStatistics UniversityofReginaReginaSKS4S0A2Canada

In this paper,we consider the simultaneous representation of pairs of integers as linear combinations in three prime variables and obtain a related numerical bound.

关键词： Simultaneous representation Circle method Linear equation

Influence of alkali mixed effect on the mixing enthalpy in 0.75B_2O_3-0.25[xNa_2O-(1-x)K_2O]glass system

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Chinese Chemical Letters 2008年第10期19卷 1252-1255页

作者： A.Kouyate A.P.Ahoussou A.Yapi d.diabate J.Rogez A.Trokourey Laboratoire de Chimie-Physique UFR-SSMTUniversité de Cocody22 BP 582 Abidjan 22Cote d'Ivoire Institut des Matériaux de Microélectroniquede Nanoscience de ProvenceIM2NPUMR 6242CNRSUniversité Paul CézanneMarseilleFaculté des Sciences et Techniques de St Jérme13397 Marseille Cedex 20France

The mixed alkali effect was investigated in the glass system 0.75B2O3-0.25[xNa2O-（1 -x）K20] through thermodynamic properties. The calorimetric measurements were performed in HF solution calorimetry at 298 K. The mixing enthalpy values show non-linear behaviour upon substitution of one alkali ion by another. This thermodynamic non-ideality is caused by the slight variations of distance between metallic cations, the macromolecular structure being unchanged. It can be explained, at least qualitatively, using electrolyte theory based on the Coulombic interactions of charged species originally developed by debye and Hückel.

关键词： Alkali mixed effect Calorimetry Mixing enthalpy Coulombic interactions

Overview of Particles and Bubbles in Continuously Cast Steel

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Journal of Iron and Steel Research International 2011年第S2期18卷 211-219页

作者： Karl-Hermann TACKE AG der dillinger Hüttenwerke P.O. Box 1580 D-66748 Dillingen/Saar Germany

This paper gives an overview of phenomena associated with particles and bubbles in continuously cast steel. during steel processing from deoxidation to solidification the inclusion population undergoes changes with opportunities of removal. Flotation is an important separation mechanism. Inclusion particles may accumulate in the solidifying strand, thus forming enriched bands, which depend on the type of casting machine. Bubbles are created during inert gas injection. They also change in size, can float out, but also form accumulation bands. The interaction of bubbles and particles is discussed. Internal structure that recently has been observed on the inner surface of bubbles will be reviewed.

关键词： continuous casting solidification inclusions particles agglomeration accumulation bands gas injection bubbles attachment flotation inner surface wave rings terraces

Feasibility of a finger prick-based self-testing kit in first- and second-degree relatives of children with coeliac disease

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World Journal of Gastroenterology 2011年第14期17卷 1840-1843页

作者： Judith Pichler Matthias Zilbauer Franco Torrente Robert Heuschkel Alan Phillips Camilla Salvestrini department of Paediatrics and Adolescent Medicine Medical University of Vienna1090 ViennaAustria department of Paediatric Gastroenterology Addenbrooke's HospitalCambridge CB2 0QQUnited Kingdom Centre for Paediatric Gastroenterology Royal Free HospitalLondon NW3 2QGUnited Kingdom

AIM:To assess feasibility of a finger prick-based kit as method for self-testing of first and second-degree relatives of coeliac disease (Cd) patients. METHOdS:A total number of 379 subjects were invited to participate in this study,consisting of 197 first- degree and 182 second-degree relatives of Cd patients. The self-testing kit (BiocardTM) was sent out with included instructions for use. Completed tests were sent back to the study coordinator for assessment. RESULTS:One hundred and ninety-six invited relatives carried out the BiocardTM test at home. Amongst these,70% were children. In 97% of the cases the test was performed correctly. Three tests revealed a positive result,all of which were later confirmed by serology and histology as coeliac ***:Our study indicates that BiocardTM test is a reliable,easy to use and well-accepted tool for home testing of first- and second-degree relatives of Cd patients.

关键词： Coeliac disease Self-testing kit Second-degree relatives

Hemobilia due to hepatocellular carcinoma： cholangioscopicfindings and novel endoscopic hemostasis

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Hepatobiliary & Pancreatic diseases International 2018年第3期17卷 275-277页

作者： takeshi ogura atsushi okuda kazuhide higuchi second department of internal medicine osaka medical college2-7 DaigakuchouTakatsukishiOsaka 569-8686Japan

To the Editor：Trauma, inflammation, iatrogenic procedures such as liverbiopsy and percutaneous transhepatic biliary drainage （PTBd）, vascularanomalies, coagulopathy status, and malignancy can causehemobilia [1]. Malignant causes of hemobilia include cholangiocarcinoma,pancreatic cancer, gallbladder tumor, and liver metastasis,but rarely hepatocellular carcinoma （HCC）. Here, we describeachieving endoscopic hemostasis for hemobilia caused by HCC,which was visualized using the single-operator, SPY-dS cholangioscope（Boston Scientific, Tokyo, Japan） under endoscopic retrogradecholangiopancreatography （ERCP） guidance. This scope is a dramaticimprovement over the SpyGlass system in that it is easier to insert into the biliary tract due to a tapered tip, a 120° digitalfield-of-view provides favorable visualization, and new injection and suction functions have been added via a two-port adaptor.

关键词： COVEREd METALLIC STENT

APPLICATION OF NONLINEAR MULTI-CHANNEL ALGORITHMS FOR ESTIMATING SEA SURFACE TEMPERATURE WITH NOAA 14 AVHRR dATA

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Chinese Journal of Oceanology and Limnology 2000年第3期18卷 199-207页

作者：李晓峰 NOAA Science Center CampSprings 美国 MD 2 0 746

NOAA global operational NOAA/AVHRR Nonlinear Sea Surface Temperature (NLSST) retrieval algorithms were used to generate Global Area Coverage (GAC) sea surface temperature (SST) measurements in the global ocean in 1998. The accuracy of SST retrieved from daytime split window NLSST algorithm and nighttime triple window NLSST algorithm for NOAA 14 AVHRR data was investigated in this study. A matchup dataset of drifting buoys and NOAA 14 satellite measurements in the global ocean was generated to validate these operational split window and triple window algorithms. For NOAA 14 in 1998, we had 14095 and 22643 satellite and buoy matchups that matched within 25 km and 4 hours for daytime and nighttime, respectively. The satellite derived SST had a bias of less than 0.1℃ and standard deviation of about 0.5℃. This study also showed that the NLSST algorithm provided the same order of SST accuracy in different time of the year and under a wide range of satellite zenith angle and water vapor represented by the channel 4 and 5 brightness temperature difference. Therefore, NLSST algorithms are usually independent of season, geographic location, or atmospheric moisture content. Comparison between the low resolution AVHRR GAC data accuracy and high resolution Local Area Coverage (LAC) data accuracy is also discussed.

关键词： sea surface temperature (SST) NOAA/AVHRR nonlinear SST algorithm

Failure mechanisms in flexible electronics

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International Journal of Smart and Nano Materials 2023年第4期14卷 510-565页

作者： Zhehui Zhao Haoran Fu Ruitao Tang Bocheng Zhang Yunmin Chen Jianqun Jiang MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering Zhejiang UniversityHangzhouChina department of Civil Engineering Zhejiang UniversityHangzhouChina R&d department Wuxi Innosonics Medical Technology CoLtdWuxiChina R&d department of devices and processes Jiashan Fudan InstituteJiaxingChina

The rapid evolution of flexible electronic devices promises to revolutionize numerous fields by expanding the applications of smart ***,despite this vast potential,the reliability of these innovative devices currently falls short,especially in light of demanding operation environment and the intrinsic challenges associated with their fabrication *** heterogeneity in these processes and environments gives rise to unique failure modes throughout the devices'*** significantly enhance the reliability of these devices and assure long-term performance,it is paramount to comprehend the underpinning failure mechanisms thoroughly,thereby,enabling,optimal design solutions.A myriad of investigative efforts have been dedicated to unravel these failure mechanisms,utilizing a spectrum of tools from analytical models,numerical methods,to advanced characterization *** review delves into the root causes of device failure,scrutinizing both the fabrication process and the operation ***,We subsequently address the failure mechanisms across four commonly observed modes:strength failure,fatigue failure,interfacial failure,and electrical failure,followed by an overview of targeted characterization methods associated with each *** with an outlook,we spotlight ongoing challenges and promising directions for future research in our pursuit of highly resilient flexible electronic devices.

关键词： Flexible electronic devices failure mechanisms characterization methods