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Malaria epidemiology in the democratic Republic of east Timor

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Asian Pacific Journal of Tropical Medicine 2010年第4期3卷 283-287页

作者： Afonso de Almeida Virgilio e do Rosario Ana Paula Arez Pedro Cravo Universidade Nacional de Timor Lorosae Avenida Cidade de LisboaDili-Timor Leste Centro de Malaria e Outras Doencas Tropicais Instituto de Higiene e Medicina TropicalUniversidade Nova de LisboaRua da Junqueira 961349-008 Lisboa Portugal Centro de Malaria e Outras Doencas Tropicais Instituto de Higiene e Medicina TropicalUniversidade Nova de LisboaRua da Junqueira 961349008 Lisboa Portugal Unidade de Biologia Molecular Instituto de Higiene e Medicina TropicalUniversidade Nova de LisboaRua da Junqueira 961349-008 Lisboa Portugal

Objective:To investigate malaria prevalence and socio-economic conditions in east Timor. Methods:Blood samples were collected from 650 individuals distributed among six districts in east Timor.434 and 216 individuals were sampled by passive and active case detection, respectively(PCD,ACD).Results:The results showed that the plasmodium infection prevalence was 18.9%with predominance of Plasmodium falciparum(***) infections(60.2%). The majority of cases were detected in children between 2-14 years old in both PCD and ACD. Participants residing in Same and Lospalos were at a higher risk of *** percentage of infections associated to the lack of bed net use was twice as high as users(25.2%vs 12.5%). The prevalence of malaria among participants who lived in brick/cement houses(8.3%) was two times less than those who lived in other types of houses(3.7%).There was a significantly lower prevalence of infection detected in individuals living in complete housing constructions with absence of domestic animals in or near the ***:The major risk factors for malaria in east Timor are age,lack of bed net use,incomplete housing constructions and exposure to mosquitoes.

关键词： east Timor Malaria epidemiology Children Risk factors Housing constructions

Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-de Zhang Jie Chen Hai-Di Fan Wan Wang Bin Wang Ju-Yun Ma Peng-Peng Li Hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

The Hoeke-Brown failure criterion and GSI-2018 edition

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Journal of Rock Mechanics and Geotechnical engineering 2019年第3期11卷 445-463页

作者： e.Hoek e.T.Brown North Vancouver British ColumbiaV7R 4H7Canada Brisbane Queensland 4169Australia

The HoekeBrown criterion was introduced in 1980 to provide input for the design of underground excavations in *** criterion now incorporates both intact rock and discontinuities,such as joints,characterized by the geological strength index(GSI),into a system designed to estimate the mechanical behaviour of typical rock masses encountered in tunnels,slopes and *** strength and deformation properties of intact rock,derived from laboratory tests,are reduced based on the properties of discontinuities in the rock *** nonlinear HoekeBrown criterion for rock masses is widely accepted and has been applied in many projects around the ***,in general,it has been found to provide satisfactory estimates,there are several questions on the limits of its applicability and on the inaccuracies related to the quality of the input *** paper introduces relatively few fundamental changes,but it does discuss many of the issues of utilization and presents case histories to demonstrate practical applications of the criterion and the GSI system.

关键词： Hoek-Brown criterion Geological strength index(GSI) Rock mass strength Uniaxial compressive strength(UCS) Tension cut-off Rock mass deformation modulus

effect of Magnetic Field on a p-Type δ-Doped GaAs Layer

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Chinese Physics Letters 2010年第7期27卷 233-236页

作者： e. OZTURK department of Physics Cumhuriyet University Sivas 58140 Turkey

The energy levels of holes in a p-type δ-doped GaAs structure under a magnetic field are theoretically calculated within the framework of the effective mass approximation for a uniform aceeptor distribution. The electronic structure is calculated by solving the Schrodinger and Poisson equations self-consistently. The effect of the magnetic field on the potential profile changes the degree of the confinement and localization, and thus this behavior can be used to study these systems in regions of interest, without the need to grow many different samples. It is found that the heavy-hole subbands contain many more energy states than the light-hole ones; the population of the heavy-hole levels represents approximately 91 % of all the carriers without magnetic field. With increasing magnetic field the total population of the heavy-holes increases and the number of filled states changes.

关键词： Magnetic field energy Fields Computers Political systems

Resistance and susceptibility of alfalfa （Medicago sativa L.） cultivars to the aphid Therioaphis maculata （Homoptera： Aphididae）： insect biology and cultivar evaluation

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Insect Science 2006年第1期13卷 55-60页

作者： ALeXANDRe de ALMeIDA e SILVA eLeNICe MOURO VARANDA JOSe RICARDO BAROSeLA Laboratorio de entomologia IPEPATRO RO Brasil departamento de Biologia Faculdade de Filosofia Ciencias e Letras de Ribeirao Preto Universidade de Sao Paulo Ribeirao Preto SP Brazil

Biology of the aphid Therioaphis maculata was studied on alfalfa （Medicago sativa L.）, including four resistant （Mesa-Sirsa, CUF101, Baker and Lahontan） and two susceptible （ARC and Caliverde） alfalfa cultivars, and one of the most cropped Brazilian cultivars, Crioula. Under controlled conditions, antibiosis （i.e., reduced longevity, fecundity and increased mortality of the aphid） was observed mainly on the resistant alfalfa cultivars, except on Lahontan. Crioula seemed to be tolerant to aphids. Present data support geographic limitation usage of cultivars, and we suggest Baker and Mesa-Sirsa as sources of antibiosis, and provide biological information of a tropical T. maculata biotype on alfalfa.

关键词： alfalfa cultivars aphid resistance susceptibility Therioaphis maculata

The Asymptotics of the Heat Semigroup for a General Bounded Domain with Mixed Boundary Conditions

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Acta Mathematica Sinica,english Series 2000年第4期16卷 627-636页

作者： e. M. e. Zayed Mathematics department. Faculty of Science. Zagazig University. Zagazig. egypt

Small-time asymptotics of the trace of the heat semigroup θ（t）=Σv=1x exp（-tμv）. where {μv} are the eigenvalues of the uegative Laplacian -Δ= -Σβ=12（/xβ）2 in the （x1, x2）-plane. is studied for a general bounded domain Ω with a smooth boundary Ω. where a finite number of Dirichlet. Neumann and Robin boundary conditions, on the piecewise smooth parts Γi（i=1, ..., n） of )Ω such that)Ω=∪i=1nΓ are considered. Some geometrical properties associated with Ω are determined

关键词： Heat semigroup Inverse problem Mixed boundary conditions eigenvalues

Review of Networked Microgrid Protection:Architectures,Challenges,Solutions,and Future Trends

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CSee Journal of Power and energy Systems 2024年第2期10卷 448-467页

作者： Jorge de la Cruz Ying Wu John e.Candelo-Becerra Juan C.Vasquez Josep M.Guerrero Center for Research on Microgrids(CROM) Department of Energy TechnologyAalborg University9220 AalborgDenmark Facultad de Minas Departamento de Energia Eléctrica y AutomaticaUniversidad Nacional de ColombiaSede MedellinCarrera 80 No.65-223RobledoMedellin 050041Colombia. Center for Research on Microgrids at UPC(UPC CROM) Department of Electronic EngineeringTechnical University of Catalonia(UPC)08019 Barcelona Spain ICReA Pg.Lluis Companys 2308010 BarcelonaSpain Center for Research on Microgrids at AAU(AAU CROM) AAU EnergyAalborg University(AAU)9220 Aalborg EastDenmark

design and selection of advanced protection schemes have become essential for reliable and secure operation of networked *** protection schemes that allow correct operation of microgrids have been proposed for individual systems in different topologies and ***,protection schemes for networked microgrids are still in devel-opment,and further research is required to design and operate advanced protection in interconnected *** of these microgrids in different nodes with various intercon-nection technologies increases fault occurrence and complicates protection *** paper aims to point out challenges in developing protection for networked microgrids,potential solutions,and research areas that need to be addressed for their ***,this article presents a systematic analysis of different microgrid clusters proposed since 2016,including several architectures of networked microgrids,operation modes,components,and utilization of renewable sources,which have not been widely explored in previous review ***,the paper presents a discussion on protection systems currently available for microgrid clusters,current challenges,and solutions that have been proposed for these ***,it discusses the trend of protection schemes in networked microgrids and presents some conclusions related to ***—Adaptive eprotection,microgrid cluster,microgrid,multiple microgrid,networked microgrid,real-time simulation,smart grid.

关键词： Adaptive eprotection microgrid cluster microgrid multiple microgrid networked microgrid real-time simulation smart grid

enhancement of electric Conductivity in Transparent Glasse—Ceramic Nanocomposites of Bi_2O_3—BaTiO_3 Glasses

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Journal of Materials Science & Technology 2013年第12期29卷 1166-1176页

作者： A.A.Bahgat M.G.Moustafa e.e.Shaisha department of Physics Faculty of ScienceAl-Azhar University

The frequency and temperature dependent electrical conductivity measurements for heat-treated binary glass system with composition of （lO0-x）Bi203-xBaTi03 （x = 20, 30, 40 and 50, in mol%） were carried out. The glass was prepared by melt quenching technique and their corresponding glass-ceramic nanocomposites were obtained by suitable heat treatment. Nanostructured behavior and electrical properties of these glasses and their corresponding glass-ceramic nanocomposites were studied. X-ray diffraction （XRD） and differential scanning calorimetry confirmed the amorphous nature of the glasses. Moreover, XRD patterns of the samples indicate nanocrystallites embedded in the glass matrix. The Fourier transform infrared spectroscopy （FT-IR） spectral analysis showed that the band positions of glass system are within the wave number range of Bi06, Bi03 and Ti06 structural units. It is observed that the electrical conductivity is enhanced by 102-103 times in the transparent glass-ceramic nanocomposite phase. With further heat treatment, the conductivity decreased considerably in the stage of glass-ceramic nanocomposite phase as compared with the glassy phase sample. Therefore, partially devitrified phase is more suitable as cathode material in secondary batteries compared to its vitreous or fully crystalline counterpart. The conduction mechanism was confirmed to obey the adiabatic small polaron hopping （SPH）. AC conductivity measurements were performed as a function of temperature and frequency, showing a very slow increasing rate at low temperatures and then a fast rate at higher temperatures.

关键词： Barium titanat Transparent glass--ceramic nanocomposites DC electrical conductivity AC electrical conductivity Smallpolaron hopping

Comparison of the simulated gamma-ray attenuation coefficients with the real measurements

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Nuclear Science and Techniques 2015年第5期26卷 53-57页

作者： e.e.ermis e.Pilicer C.Celiktas ege University Faculty of Science Physics Department Uludag University Faculty of Arts and Science Physics Department

The gamma-ray linear and the mass attenuation coefficients of Pb, Al, Cu, and plexiglass materials were calculated from both experimental and theoretical(simulation) methods. For the experimental results, a spectrometer, which was consisted of a Na I(Tl) inorganic scintillation detector, was used. The theoretical attenuation values were calculated by means of the FLUKA Monte Carlo(MC) and XCOM programs. Obtained attenuation coefficients from the experiment and the theoretical methods were compared with each other and literature values.

关键词：质量衰减系数 γ射线实际测量模拟理论计算方法闪烁体探测器蒙特卡罗方法玻璃材料