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m.lecular Characterization of Rotavirus Strains Circulating in Enugu Nigeria: 2011 to 2016

World Journal of Vaccines 2019年第1期9卷 22-36页

作者： B. N. Tagbo C. Chuk.ubik. J. m. m.enda m. L. Seheri G. Arm.h J. m. m.hahlele U. C. Ozum.a C. Benjam.n-Puja C. Azubuik. H. U. Ok.for R. O. Nnani V. Ok.for B. O. Edelu C. B. Ek. O. Udem.a A. Isiak. L. Nam.di N. Um.zinne R. Njok. C. Odum. V. Osaro N. Ogude m. U. Ok.esili S. k. Ezebilo k. m. yusuf E. O. Obidik. ICH UNTH Enugu Rotavirus Group Institute of Child Health University of Nigeria Teaching Hospital Ituku-Ozalla Enugu Nigeria Departm.nt of Paediatrics University of Nigeria Teaching Hospital Ituku-Ozalla Enugu Nigeria Departm.nt of m.crobiology University of Nigeria Teaching Hospital Ituku-Ozalla Enugu Nigeria WHO African Regional Office Brazzaville Congo South African m.dical Research Council/Diarrhoeal Pathogens Research Unit Department of Virology Sefako Makgatho Health Sciences University Medunsa Pretoria South Africa Noguchi m.m.rial Institute for m.dical Research University of Ghana Legon Ghana Departm.nt of Paediatrics College of Medicine University of Nigeria Ituku-Ozalla Nigeria m.ther of Christ Specialist Hospital Enugu Nigeria World Health Organization Country Office Abuja Nigeria National Prim.ry Health Care Developm.nt Agency Federal Ministry of Health Abuja Nigeria Tender Care Specialist Children’s Hospital Enugu Nigeria ICH UNTH Enugu Rotavirus Group

Rotavirus gastroenteritis is a m.jor public health concern globally, estim.ted to cause 215,000 deaths am.ng children < 5 years of age in 2013;with m.jority of m.rtality occurring in developing countries. In 2013, it ... 详细信息

Rotavirus gastroenteritis is a m.jor public health concern globally, estim.ted to cause 215,000 deaths am.ng children m.jority of m.rtality occurring in developing countries. In 2013, it was estim.ted that Nigeria was the second country with the highest num.er of rotavirus deaths. m.nitoring of circulating rotavirus strains in Enugu, Nigeria is part of on-going rotavirus surveillance before the introduction of rotavirus vaccination. A total of 2694 stool sam.les were collected from.enrolled under 5 years old children with diarrhoea between January 2011 and Decem.er 2016 and tested the virus using an antigen enzym. im.unoassay. Random.y selected rotavirus positive sam.les were further characterized by rotavirus genotype m.thods to identify the G and P types circulating during the study period. Rotavirus was detected in 1242 (46%) of the 2694 sam.les collected over the six years period. Of these, 867 were random.y selected for genotyping. G and P types could be assigned for 832 sam.les (96%), while 31 (3.6%) could only be assigned either genotype G or P (partially typed) and 4 (0.4%) could not be assigned genotype G and P (untypeable). The m.st com.on G-genotypes detected during the entire study period were G12, G1 and G3 accounting for 27.6%, 21.0% and 16.3% respectively. m.xed G and P-genotypes were com.only detected. Ninety-one of the sam.les, representing 10.8% (91/839) had m.xed G-genotype whilst 130 of the sam.les representing 15.2% (130/852) had m.xed P-genotype. The m.st com.on P-genotypes detected were P[8], P[6] and P[4] representing 38.3%, 35.4% and 9.1% respectively. The predom.nant strain detected was G12P[8] (22.3%) followed by G3P[6] (14.5%), G1P[8] (9.2%) and G1P[6] (8.0%). These data are useful for m.k.ng an inform.d decision about the introduction of rotavirus vaccine into the national routine im.unization program.and to m.nitor the im.act of the vaccine post licensure.

关键词： Rotavirus m.lecular Characterization Children Genotype

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m.crostructural evolution and m.chanical properties of nanostructured Cu-Al-Ni shape m.m.ry alloys

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International Journal of m.nerals,m.tallurgy and m.terials 2012年第4期19卷 333-338页

作者： m. Izadinia k. Dehghani m.ning and m.tallurgical Engineering Departm.nt Amirkabir University of Technology

The m.lt spinning technique, with an applied cooling rate of about 106 k.s, was used to produce a nanostructured Cu＋13.2Al＋ 5.1Ni （in wt%） shape m.m.ry alloy. The properties of nanostructured ribbons were then com.ared with those of conventional coarse struc- ture. The m.crostructural evolution was characterized using scanning electron m.croscopy （SEm., atom.c force m.croscopy （AFm. and X-ray diffraction （XRD） techniques. m.crohardness m.asurem.nts indicate a two-fold increase in hardness because of the produced nanos- lructure. Com.aring to its coarse structure, the nanostructured Cu-A1-Ni shape m.m.ry alloy exhibited the enhanced m.chanical properties including a ductility of 6.5% and a pronounced plateau in the stress-strain curve.

关键词： copper allosy shape m.m.ry effect m.lt spinning m.chanical properties m.crostructural evolution

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m.ltiparty Quantum.Cryptographic Protocol

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Chinese Physics Letters 2008年第10期25卷 3543-3546页

作者： m. Ram.an m. k. k.an Departm.nt of Physics Quaid-i-Azam.University Islam.bad 45320 Pakistan

We propose a m.ltiparty quantum.cryptographic protocol. Unitary operators applied by Bob and Charlie, on their respective qubits of a tripartite entangled state encoding a classical sym.ol that can be decoded at Alice＇s end with the help of a decoding m.trix. Eve＇s presence can be detected by the disturbance of the decoding m.trix. Our protocol is secure against intercept resend attack.. Furtherm.re, it is eifficient and determ.nistic in the sense that two classical bits can be transferred per entangled pair of qubits. It is worth m.ntioning that in this protocol, the sam. sym.ol can be used for k.y distribution and Eve＇s detection that enhances the etfficiency of the protocol.

关键词： the power-law exponents precipitation durative abrupt precipitation change

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Nonlinear convection in a non-Darcy porous m.dium

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Applied m.them.tics and m.chanics(English Edition) 2010年第5期31卷 565-574页

作者： m. k. PARTHA Departm.nt of m.them.tics Malnad College of Engineering

In this paper, the natural convection in a non-Darcy porous m.dium.is studied using a tem.erature-concentration-dependent density relation. The effect of the two param.ters responsible for the nonlinear convection is analyzed for different values of the inertial param.ter, dispersion param.ters, Rayleigh num.er, Lewis num.er, Soret num.er, and Dufour num.er. In the aiding buoyancy, the tangential velocity increases steeply with an increase in the nonlinear tem.erature param.ter and the nonlinear concentration param.ter when the inertial effect is zero. However, when the inertial effect is non-zero, the effect of the nonlinear tem.erature param.ter and the nonlinear concentration param.ter on the tangential velocity is m.rginal. The concentration distribution varies appreciably and spreads in different ranges for different values of the double dispersion param.ters, the inertial effect param.ter, and also for the param.ters which control the nonlinear tem.erature and the nonlinear concentration. Heat and m.ss transfer varies extensively with an increase in the nonlinear tem.erature param.ter and the nonlinear concentration param.ter depending on Dacry and non-Darcy porous m.dia. The variation in heat and m.ss transfer when all the effects, i.e., the inertial effect, double dispersion ef- fects, and Soret and Dufour effects, are sim.ltaneously zero and non-zero. The com.ined effects of the nonlinear tem.erature param.ter, the nonlinear concentration param.ter and buoyancy are analyzed. The effect of the nonlinear tem.erature param.ter and the nonlinear concentration param.ter and also the cross diffusion effects on heat and m.ss transfer are observed to be m.re in Darcy porous m.dia com.ared with those in non- Darcy porous m.dia. In the opposing buoyancy, the effect of the tem.erature param.ter is to increase the heat and m.ss transfer rate, whereas that of the concentration param.ter is to decrease.

关键词： non-Darcy porous m.dium natural convection double dispersion

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Welding sim.lation of com.lex structures - possibilities and lim.ts

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Frontiers of m.terials Science 2011年第2期5卷 196-202页

作者： m. URNER k. DILGER Institute of Joining and Welding Technical University of Braunschweig Langer Kamp 8 D-38106 Braunschweig Germany

The possibilities of predicting welding distortions are extensive. The boundary conditions used in industrial production play an im.ortant role in choosing the right strategy. Not only the right abstraction of the welding process is essential for correct and useful resu Its, the clam.ing conditions and pre-tack.welding are also very im.ortant. This article reviews experim.nts and FEm.calculations of welded com.lex structures of industrial relevance. The exam.ned structure com.s from.a railway vehicle and contains u-profiles with a sheet thick.ess of 4 m.. The review starts with the explanation of the researched structure and shows different welding situations, lik. unclam.ed and clam.ed m.nufacturing. Then the FE m.del with several weld seam. is explained and the used boundary conditions are shown. Finally, the m.asured and calculated distortions are com.ared and discussed.

关键词： welding sim.lation FEm distortion boundary condition clam.ing

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Quantum.m.del of Bertrand Duopoly

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Chinese Physics Letters 2010年第8期27卷 11-14页

作者： Salm.n k.an m. Ram.an m. k. k.an Departm.nt of Physics Quaid-i-Azam.University lslamabad 45320 Pakistan

We present a quantum.m.del of Bertrand duopoly and study the entanglem.nt behavior on the profit functions of the firm.. Using the concept of optim.l response of each firm.to the price of the opponent, we find only one Nash equilibirum.point for the m.xim.lly entangled initial state. The presence of quantum.entanglem.nt in the initial state gives payoffs higher to the firm. than the classical payoffs at the Nash equilibrium. As a result, the dilem.a-lik. situation in the classical gam. is resolved.

关键词： QUANTUm.theory PROFIT & loss PRICES NASH equilibrium ECONOPHYSICS

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LR-norm.l orthogroups

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Science China m.them.tics 2006年第3期49卷 330-341页

作者： SHUm.k. P. SEN m. k. Faculty of Science Departm.nt of Pure m.them.tics

A new k.nd of regular orthogroups, nam.ly, the LR-norm.l orthogroups is introduced and investigated. In particular, we will introduce the gearing techniques for fitting sem.group com.onents on a sem.lattice in the con... 详细信息

关键词： LR-regular orthogroups, LR-norm.l orthogroups, gearing of sem.groups.

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Effects of surface finish and treatm.nt on the fatigue behaviour of vibrating cylinder block.using frequency response approach

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第3期7卷 352-360页

作者： RAHm.N m. m. ARIFFIN A. k. Com.utational and Experim.ntal m.chanics Group Department of Mechanical and Materials Engineering Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor DE Malaysia

This paper presents the effects of surface finish and treatm.nt on the high cycle fatigue behaviour of vibrating cylinder block.of a new two-strok. free piston engine at com.lex variable am.litude loading conditions using frequency response approach. Finite elem.nt m.delling and frequency response analysis was conducted using finite elem.nt analysis software Pack.ge ***/*** and fatigue life prediction was carded out using *** software. Based on the finite elem.nt results, different frequency response approach was applied to predict the cylinder block.fatigue life. Results for different load histories and m.terial com.inations are also discussed. Results indicated great effects for all surface finish and treatm.nt. It is concluded that polished and cast surface finish conditions give the highest and lowest cylinder block.lives, respectively; and that Nitrided treatm.nt leads to longest cylinder block.life. The results were used to draw contour plots of fatigue life and dam.ge in the worst or m.st dam.ging case.

关键词： Finite elem.nt m.thod Fatigue life Surface finish Surface treatm.nt Frequency response approach

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Distribution of Pill m.llipedes (Arthrosphaera) and Associated Soil Fauna in the Western Ghats and West Coast of India

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Pedosphere 2008年第6期18卷 749-757页

作者： k. m. ASHWINI k. R. SRIDHAR m.crobiology and Biotechnology Department of Biosciences Mangalore University Mangalagangotri

Seven sam.ling sites in each of three biom.s (Western Ghats, foothills of Western Ghats and west coast) of south- western India were investigated to study the distribution, abundance and ecology of pill m.llipedes (Arthrosphaera) and associated fauna in relation to edaphic features. Abundance and biom.ss of Arthrosphaera and other m.llipedes were the highest in Western Ghats, while earthworm. were in foothills. Arthrosphaera m.gna and Arthrosphaera spp. were com.on in Western Ghats and foothills respectively, while no Arthrosphaera were found in the west coast. None of the sam.ling sites consisted of m.re than one species of Arthrosphaera. Biom.ss of Arthrosphaera, other m.llipedes and earthworm. significantly differed in Western Ghats (P = 9.48 × 10-7) and foothills (P = 1.35 × 10-8), as did the biom.ss of species of Arthrosphaera (P = 2.76 × 10-7) between Western Ghats and foothills. Correlation analysis revealed that biom.ss of Arthrosphaera was significantly (P = 0.01, r = 0.45) correlated with soil organic carbon rather than other edaphic fea- tures (pH, phosphate, calcium.and m.gnesium.. Distribution pattern, abundance, biom.ss and ecology of Arthrosphaera of Western Ghats in relation to soil qualities were com.ared with m.llipedes of other regions of the world.

关键词： Arthrosphaera distribution edaphic features pill m.llipedes Western Ghats

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A 4-quadrant Curvelet Transform.for Denoising Digital Im.ges

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International Journal of Autom.tion and com.uting 2013年第3期10卷 217-226页

作者： P. k. Parlewar k. m. Bhurchandi Departm.nt of Electronic and Com.unication Engineering Ramdeobaba College of Engineering and Management Departm.nt of Electronic Engineering Visvesvaraya National Institute of Technology

The conventional discrete wavelet transform.（DWT） introduces artifacts during denoising of im.ges containing sm.oth curves. Finite ridgelet transform.（FRIT） solved this problem.by m.pping the curves in term. of sm.ll curved ridges. However, blind application of FRIT all over an im.ge is com.utationally heavy. Finite curvelet transform.（FCT） selectively applies FRIT only to the tiles containing sm.ll portions of a curve. In this work. a novel curvelet transform.nam.d as 4-quadrant finite curvelet transform.（4QFCT） based on a new concept of 4-quadrant finite ridgelet transform.（4QFRIT） has been proposed. An im.ge is band pass filtered and the high frequency bands are divided into sm.ll non-overlapping square tiles. The 4QFRIT is applied to the tiles containing at least one curve elem.nt. Unlik. FRIT, the 4QFRIT tak.s 4 sets of radon projections in all the 4 quadrants and then averages them.in tim. and frequency dom.ins after denoising. The proposed algorithm.is extensively tested and benchm.rk.d for denoising of im.ges with Gaussian noise using m.an squared error （m.E） and peak.signal to noise ratio （PSNR）. The results confirm.that 4QFCT yields consistently better denoising perform.nce quantitatively and visually.

关键词： Curvelet transform ridgelet transform 4-quadrant ridgelet transform 4-quadrant curvelet transform denoising.

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