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Heart Failure: Organization of Care after Hospitalization at the Abidjan Cardiology Institute

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World Journal of Cardiovascular Diseases 2023年第9期13卷 619-631页

作者： Djenamba Bamba-Kamagaté esaïe Soya Mbe.dagnogo Kouassi Florent Koffi Parfait Kouame Jean Baptiste Anzouan-Kacou Medical Service Cardiology Institute of Abidjan Abidjan C&ocircte d’Ivoire Functional Investigation Service Cardiology Institute of Abidjan Abidjan C&ocircte d’Ivoire

Introduction: The care pathway for heart failure (HF) patients is poorly documented in sub-Saharan Africa. A multidisciplinary management reduces hospitalizations and mortality. In our context of frequent rehospitalization of heart failure patients, the objective of this study was to analyse the post-hospital follow-up health care. Methods: We conducted a prospective study in the medical department of a Heart Institute from January 1st to December 31, 2015. Patients over 18 years of age, hospitalized for heart failure, consenting and followed up on an outpatient basis for 2 years were included. Results: We collected 396 patients hospitalized for HF. The mean age was 57.4 ± 16 years with a male predominance (59.3%). Retired and unemployed people represented 27% and 16.2% respectively. During the post-hospitalization follow-up, patients who were regularly followed up represented 10.8% of the cases. 74.1% of the cases were regular patients. Patients were not followed up by the usual practitioner (58.2%). Only 94 patients had undergone a cardiovascular rehabilitation programme, of which 21.3% for exercise rehabilitation and 78.7% for therapeutic education. Patients who had attended titration sessions (n = 59) had reached optimal doses of ACe inhibitors, ARB II and beta blockers in 67.8%, 7.3% and 38.5% respectively. The rates of decompensation (73.3%) and rehospitalization (49.5%) were higher. The paraclinic check-up (eCG, X-ray, Cardiac Doppler ultrasonography, Biology) was rarely requested. The probability of survival was higher in patients regularly monitored than in those irregularly monitored. Conclusion: The organisation of care and coordination between professionals should be structured or planned. Therapeutic strategies need to be intensified in order to optimise their long-term benefits.

关键词： Care Pathway Hospitalization Suites Heart Failure Outpatient

An improved technique for global daily sunshine duration estimation using satellite imagery

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2012年第9期13卷 717-722页

作者： Muhammad Ali SHAMIM Renji ReMeSAn da-wei HAn naeem eJAZ Ayub eLAHI Department of Civil engineering University of Engineering and Technology Taxila 47050 Pakistan Department of Geography University of Hull HU6 7RX UK Department of Civil engineering University of Bristol BS8 ITR UK

This paper presems an improved model for global sunshine duration estimation. The methodology incorporates geostationary satellite images by including snow cover information, sun and satellite angles and a trend correction factor for seasons, for the determination of cloud cover index. The effectiveness of the proposed methodology has been tested using Meteosat geostationary satellite images in the visible band with a temporal resolution of 1 h and spatial resolution of 2.5 km×2.5 km, for the Brue Catchment in the southwest of england. Validation results show a significant improvement in the estimation of global sunshine duration by the proposed method as compared to its predecessor （R2 is improved from 0.68 to 0.83, root mean squared error （RMSe） from 2.37 h/d to 1.19 h/d and the mean biased error （mbe） from 0.21 h/d to 0.08 h/d）. Further studies are needed to test this method in other parts of the world with different climate and geographical conditions.

关键词： Sunshine duration Geostationary satellite evapotranspiration Solar radiation Remote sensing

Magnetic characterization of a thin Co2MnSi/L10–MnGa synthetic antiferromagnetic bilayer prepared by mbe

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Chinese Physics B 2020年第10期29卷 479-483页

作者： Shan Li Jun Lu Si-Wei Mao da-Hai Wei Jian-Hua Zhao State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences(CAS)Beijing 100083China Center of Materials Science and Optoelectronics engineering&CAS Center of excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Beijing Academy of Quantum Information Science Beijing 100193China

A synthetic antiferromagnet based on a thin antiferromagnetically coupled Co2MnSi/MnGa bilayer with Pt capping is proposed in this work. Square magnetic loops measured by anomalous Hall effect reveal that a well perpendicular magnetic anisotropy is obtained in this structure. A very large coercivity of 83 kOe (1 Oe = 79.5775 A⋅m^−1) is observed near the magnetic moment compensation point of 270 K, indicating an antiferromagnetic behavior. Moreover, the anomalous Hall signal does not go to zero even at the magnetic compensation point, for which the difficulty in detecting the conventional antiferromagnets can be overcome. By changing the temperature, the polarity of the spin–orbit torque induced switching is changed around the bilayer compensation point. This kind of thin bilayer has potential applications in spin–orbit-related effects, spintronic devices, and racetrack memories.

关键词： exchange coupling magnetization compensation anomalous Hall effect molecular-beam epitaxy

Spatial distribution,patterns and source contributions of POPs in the atmosphere of Great Mendoza using the WRF/CALMeT/CALPUFF modelling system

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emerging Contaminants 2020年第1期6卷 103-113页

作者： M.F.Ruggeri n.B.Lana J.C.Altamirano S.e.Puliafito Laboratorio de Química Ambiental Instituto Argentino de NivologíaGlaciología y Ciencias Ambientales(IANIGLACCT-CONICET)P.O.Box 131Mendoza5500Argentina Universidad Tecnologica nacional Facultad Regional MendozaRodriguez 273MendozaArgentina Centro de Tecnologías Ambientales Universidad Tecnica Federico Santa MaríaValparaísoChile Instituto Argentino de nivología Glaciología y Ciencias Ambientales(IANIGLACCT-CONICET)Argentina Facultad de Ciencias exactas y naturales Universidad Nacional de CuyoMendozaArgentina Consejo nacional de Investigaciones Científicas y Tecnicas(COnICeT) Argentina

Global monitoring of persistent Organic Pollutants(POPs)has allowed the knowledge of levels and distribution around the world as well as the understanding of its transport through the ***,there are still some gaps in this regard,especially in some locations,as the case of Great Mendoza,a medium-sized urban area located in the center-west of *** this work,the WRF/CALMeT/CALPUFF modeling system was used to estimate airborne levels of four families of POPs(PCBs,PBDes,DDTs and HCB)in the study *** model was validated from measured data obtained from eleven sites using passive air samplers with polyurethane foam disks(PUFs),subsequently analyzed by GC-eCnI/*** both sets of data,measured and simulated airborne concentrations,five statistical performance metrics were calculated for each family of POP[Mean bias error,(mbe),Fractional Bias(FB),normalized Mean Square error(nMSe),Factor of two(Fa2)and pearson correlation coefficient(r)].Results exhibited a good agreement between modeled and measured data,showing that WRF/CALMeT/CALPUFF modeling system predicts POPs airborne concentrations with reasonable accuracy at a local *** output was used to examine the relative source contribution to ground-level concentrations and to assess the spatial variability of the studied POPs in the study *** apportionment showed the prevalence of emissions from open burning of municipal solid waste(ranging from 9%to 90%)on the simulated atmospheric *** presented the lowest mean contribution from this activity(37%)but the highest variability(SD=20%),followed by PCBs(69±9%),and PBDes(84±4%).The spatial pattern obtained from simulations exhibited that both,lowest and highest levels predicted by the model,occurred in areas where no samples were taken,suggesting that the real gradient in the POPs air concentrations would be much greater than those reflected by measured *** work highlights the usefulness of the implementatio

关键词： POPs Atmospheric dispersion model CALPUFF Source apportionment

Ultrafast Magnetization Precession in perpendicularly Magnetized L10-MnAl Thin Films with Co2 MnSi Buffer Layers

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Chinese Physics Letters 2020年第5期37卷 110-114页

作者： Si-Wei Mao Jun Lu Long Yang Xue-Zhong Ruan Hai-Long Wang da-Hai Wei Yong-Bing Xu Jian-Hua Zhao State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 Center of Materials Science and Optoelectronics engineering University of Chinese Academy of SciencesBeijing 100190 Beijing Academy of Quantum Information Science Beijing 100193 Jiangsu Provincial Key Laboratory of Advanced Photonic and electronic Materials Collaborative Innovation Center of Advanced MicrostructuresSchool of Electronic Science and EngineeringNanjing UniversityNanjing 210093

perpendicularly magnetized L10-MnAl thin films with Co2 MnSi bufer layers were prepared on GaAs(001)substrates by molecular-beam epitaxy(mbe).The samples with high crystalline quality show a maximum uniaxial perpendicular magnetic anisotropy constant of 1.4×10^7 erg/cm^*** spin dynamics with a magnetization precession frequency up to 200 GHz was investigated by using time-resolved magneto-optical Kerr effect(trMOKe)measurements,from which the Gilbert damping constantαof epitaxial L10-MnAl thin films is evaluated to be less than *** work provides an important reference for analyzing the current-induced magnetization switching process in MnAl-based spintronic devices.

关键词： magnetization Gilbert anisotropy

Atomic Force Microscopy Studies of Barium Titanate Thin Films Prepared by Laser Molecular Beam epitaxy

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Chinese Physics Letters 1997年第2期14卷 134-137页

作者： CUI da-fu LU Hui-bin WAnG Hui-sheng CHen Zheng-hao ZHOU Yue-liang YAnG Guo-zhen YAnG Hai-tao TAO Hong-jie LI Lin Laboratory of Optical Physics Institute of Physics&Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080 national Laboratory for Superconductivity Institute of Physics&Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080

Laser molecular beam epitaxy(laser mbe)technique was utilized to grow the barium titanate(BaTiO_(3),BTO)thin films on SrTiO_(3)(100)*** surface morphology of the BaTiO_(3) thin films was studied by atomic force microscopy(AFM).Two-and three-dimensional AFM images were *** root mean square surface roughness,the height profile,the histogram and the bearing ratio of the height distributions for the BaTiO_(3) thin films were analyzed in *** results indicate that the laser mbe thin films exhibit an atomically smooth surface.

关键词： epitaxy roughness films

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Si基短波碲镉汞材料分子束外延生长研究

激光与红外 2015年第6期45卷 646-649页

作者：王经纬高达华北光电技术研究所北京100015

报道了在中波工艺基础上,Si基碲镉汞分子束外延短波工艺的最新研究进展,通过温度标定、使用反射式高能电子衍射、高温计的在线测量和现有的中波Si基碲镉汞温度控制曲线建立及优化了Si基碲镉汞短波材料的生长温度控制曲线;获得的Si基短波... 详细信息

报道了在中波工艺基础上,Si基碲镉汞分子束外延短波工艺的最新研究进展,通过温度标定、使用反射式高能电子衍射、高温计的在线测量和现有的中波Si基碲镉汞温度控制曲线建立及优化了Si基碲镉汞短波材料的生长温度控制曲线;获得的Si基短波HgCdTe材料表面光亮、均匀,表面缺陷密度小于3000 cm-2;基于此技术成功制备出了Si基短/中波双色材料。

关键词：硅基碲镉汞分子束外延短波碲镉汞外延短/中波双色碲镉汞

PHOTOLUMIneSCenCe OF GaAs/AlAs QUAnTUM WeLLS

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Chinese Physics Letters 1986年第12期3卷 533-536页

作者： ZHUAnG Weihua TenG da XU Zhongying Xu Jizong CHen Zonggui Institute of Semiconductors Academia SinicaBeijing

An unusual emission-I line has been observed in the photoluminescence spectra of mbe GaAs/AlAs MQW at *** half width is 6.5-9meV with peak energy Located between the near band transition and the free electrons to carbon acceptors transition in bulk *** peak energy increases roughly linearly with the logarithm of the excitation *** emission intensity decreases with the increase of temperature and disappears at about 15K.

关键词： GaAs/AlAs excitation transition

高倍增低暗电流AlInAsSb四元数字合金雪崩光电二极管

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红外与毫米波学报 2021年第2期40卷 172-177页

作者：郑大农苏向斌徐应强牛智川中国科学院半导体研究所超晶格国家重点实验室北京100083 中国科学院大学材料学院与光电技术学院北京101408

用分子束外延系统(mbe)生长高质量GaSb基AlInAsSb四元数字合金制作雪崩光电二极管(APD)。为了克服随机体材料生长方式发生的偏析现象,采用迁移增强的数字合金生长方式,其快门顺序为AlSb,AlAs,AlSb,Sb,In,InAs,In,Sb。其高分辨率X射线衍... 详细信息

用分子束外延系统(mbe)生长高质量GaSb基AlInAsSb四元数字合金制作雪崩光电二极管(APD)。为了克服随机体材料生长方式发生的偏析现象,采用迁移增强的数字合金生长方式,其快门顺序为AlSb,AlAs,AlSb,Sb,In,InAs,In,Sb。其高分辨率X射线衍射(HRXRD)曲线显示出尖锐的卫星峰,并显示出几乎完美的晶格匹配,其原子力显微镜(AFM)图像上也可以观察到光滑的表面形貌。使用优化的数字合金生长方式,制备了分离吸收、渐变、电荷和倍增(SAGCM)型的AlInAsSb数字合金APD。在室温下,器件在95%击穿时,暗电流密度为0.95 mA/cm2,击穿前最大稳定增益高达~100,其器件的高性能显示出光电领域进一步发展的潜力。

关键词：雪崩光电二级管分子束外延 AlInAsSb 四元数字合金