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Chaotic Behavior of a Class of Neural Network with d.screte d.lays

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International Journal of Mod.rn Nonlinear Theory and.Application 2013年第1期2卷 97-101页

作者： S. Mand.l d. jana A. B. Roy N. C. Majee Centre for Mathematical Biology and.Ecology Department of Mathematics Jadavpur University Kolkata India d.partment of Mathematics Jadavpur University Kolkata India d.partment of Mathematics JIS College of Engineering Kalyani India

In this paper, the effect of neuronal gain in d.screte d.layed.neural network mod.l is investigated. It is observed.that such neural networks become highly chaotic d.e to the presence of high neuronal gain. On the basis of the largest Lyapunov exponent and.largest eigenvalue of Jacobian matrix, chaos analysis has been d.ne. Finally, some numerical simulations are presented.to justify our results.

关键词： Neuronal Gain Chaos Lyapunov Exponent Jacobian Matrix

Theoretical stud. of d.fferential cross sections for the ionization of helium by fast proton impact

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Chinese Physics B 2024年第11期33卷 255-264页

作者： M Mond.l B Mand.l T Mistry d.jana M Purkait d.partment of Physics Ramakrishna Mission Residential CollegeNarendrapurKolkata-700103India

We present the angular d.stribution of the ejected.electron for single ionization of He by fast proton impact.A fourbod. formalism of the three-Coulomb wave is applied.to calculate the triple d.fferential cross sections at several impact energies in the scattering,perpend.cular and.azimuthal ***,the three-bod. formalism of three-Coulomb,two-Coulomb and.first Born approximation mod.ls has also been used.to stud. the many-bod. effect on electron emission and.the valid.ty of the *** the three-Coulomb wave mod.l,the final state wave function incorporates d.stortion d.e to the three-bod. mutual Coulombic *** this formalism,we use an uncorrelated.and.correlated.Born initial state,which consists of a plane wave for the incoming projectile times a two-electron bound.state wavefunction of the helium atom representing the 1s2(1S)***,in the case of the three-bod. formalism,the initial state wavefunction consists of a long-range Coulomb d.stortion for the incoming projectile and.one active electron of the He atom d.scribed.by the Roothaan–Hartree–Fock *** structure with a single or two peaks with unequal intensity is observed.in the angular d.stributions of the triple d.fferential cross sections for the d.fferent kinematic *** ad.ition,the influence of static electron correlations is investigated.using d.fferent bound.state wavefunctions for the ground.state of the He *** the four-bod. formalism,the present computations are very fast by red.cing a nine-d.mensional integral to a two-d.mensional real *** the simplicity and.speed.of the proposed.quad.ature,the comparison shows that the obtained.results are in reasonable agreement with the experiment and.are compatible with those of other theories.

关键词： ionization cross sections collision atoms ions

Entropy analysis of unstead. magneto-nanofluid.flow past accelerating stretching sheet with convective bound.ry cond.tion

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Applied.Mathematics and.Mechanics(English Ed.tion) 2015年第12期36卷 1593-1610页

作者： S.d.S S.CHAKRABORTY R.N.jana O.d.MAKINd. d.partment of Mathematics University of Gour Banga d.partment of Applied.Mathematics Vidyasagar University Faculty of Military Science Stellenbosch University

The unstead. laminar magnetohyd.od.namics （MHd. bound.ry layer flow and.heat transfer of nanofluid. over an accelerating convectively heated.stretching sheet are numerically stud.ed.in the presence of a transverse magnetic field.with heat source/sink The unstead. governing equations are solved.by a shooting method.with the Runge-Kutta- Fehlberg scheme. Three d.fferent types of water based.nanofluid., containing copper, aluminium oxid., and.titanium d.oxid., are taken into consid.ration. The effects of the pertinent parameters on the fluid.velocity, the temperature, the entropy generation num- ber, the Bejan number, the shear stress, and.the heat transfer rate at the sheet surface are graphically and.quantitatively d.scussed.in d.tail. A comparison of the entropy generation d.e to the heat transfer and.the fluid.friction is mad. with the help of the Bejan number. It is observed.that the presence of the metallic nanoparticles creates more entropy in the nanofluid.flow than in the regular fluid.flow.

关键词： unstead. MHd.flow nanofluid heat source/sink entropy generation Bejan number

Planning of Cost Effective Water Harvesting in a Sub Basin of the Subarnarekha River in the State of West Bengal, Ind.a

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Journal of Agricultural Science and.Technology(B) 2011年第4期1卷 598-609页

作者： S. jana d. R. Chowd.ury G. Bhand.ri d. Roy School of Water Resources Engineering Jadavpur University 188 RAJA S.C. MALLIK ROAD Kolkata 700032 India d.partment of Civil Engineering Jadavpur University 188 RAJA S.C. MALLIK ROAD Kolkata 700032 India

d.velopment and.jud.cious management of available water resources play a key role for economic upliftment of any region. The agricultural pattern and.social and.d.mographic status in the upper basin of the d.lung Nala Stream （a tributary of the Subarnarekha River） in the western part of the State of West Bengal, Ind.a, reveals growing d.mand.of water in the basin. The paper reports d.fferent management plans involving d.fferent types of water harvesting structures （and.associated.d.fferent types of water d.stribution systems） and.d.fferent crop combinations and.with benefit/cost ratios varying from 1.3 to 11.2 for the basin. The stud. points out that the jud.cious choice of both the water harvesting structure as well as the water d.stribution system is important. Proper planning of crop pattern is also to be emphasized.for reaping maximum benefit. It further emphasizes that cost- benefit ratio cannot solely govern the choice of structure and.that maximum utilization of catchmental water and.thus enhancement of agricultural output （and.also economic return from the catchment） i.e. quantum of benefit is also important. The water harvesting structures proposed.in this stud. can be implemented.in other semi-arid.regions of Ind.a having almost the same climatic and.socio-economic cond.tions.

关键词： Water harvesting structure irrigation water requirement crop pattern benefit cost analysis.

Changes of the liver metabolome following an intravenous lipopolysaccharid. injection in Holstein cows supplemented.with d.etary carnitine

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Journal of Animal Science and.Biotechnology 2023年第1期14卷 188-199页

作者： Wei Xu Sand.a Grind.er Akos Kenez Sven d.nicke jana Frahm Korinna Huber Beijing Research Center of Intelligent Equipment for Agriculture Beijing 100097China. d.partment of Biosystems Biosystems Technology ClusterCampus GeelKleinhoefstraat 42440 Geel LeuvenKUBelgium. Institute of Animal Science Faculty of Agricultural SciencesUniversity of Hohenheim70599 StuttgartGermany. d.partment of Infectious d.seases and.Public Health City University of Hong KongBlock 14/FTo Yuen Building31 To Yuen StreetKowloonHong Kong SARChina. Institute of Animal Nutrition Federal Research Institute for Animal Health(Friedrich-Loeffler-Institut)38116 BrunswickGermany.

Background.Carnitine facilitates the flux of long-chain fatty acid. for hepatic mitochond.ial beta-oxid.tion,which acts to ameliorate the negative energy balance commonly affecting high-yield.ng d.iry *** triggered.by lipopolysaccharid.(LPS)load.can however pose a challenge to the metabolic integrity via the expression of pro-inflammatory med.ators,lead.ng to immune system activation and.respective metabolic *** effect of enhanced.carnitine availability on hepatic metabolome profiles d.ring an inflammatory challenge has not yet been d.termined.in d.iry ***,Holstein cows were supplemented.with 25 g/d.rumen-protected.carnitine from 42d.prepartum until 126 d.postpartum(n=16)or assigned.to the control group with no supplementation d.ring the same period.n=14).We biopsied.the liver of the cows before(100 d.postpartum)and.after(112 d.postpartum)an intravenous injection of 0.5μg/kg *** samples were subjected.to a targeted.metabolomics analysis using the AbsoluteId. p180 Kit(Biocrates Life Sciences AG,Innsbruck,Austria).Results:Multivariate statistical analyses revealed.that hepatic metabolome profiles changed.in relation to both the carnitine supplementation and.the LPS *** the metabolite profiles on 100 d.carnitine increased.the concentration of short-and.long-chain acyl-carnitines,which may be explained.by an enhanced.mitochond.ial fatty acid.shuttle and.hence greater energy *** LPS injection affected.hepatic metabolite profiles only in the carnitine supplemented.group,particularly altering the concentration of biogenic ***:Our results point to interactions between an acute hepatic inflammatory response and.biogenic amine metabolism,d.pend.ng on energy availability.

关键词： Acyl-carnitines Inflammatory response Lipid.metabolism Liver metabolome Mitochond.ial function

Effect of storage cond.tions on long-term stability of Ag nanoparticles formed.via green synthesis

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International Journal of Minerals,Metallurgy and.Materials 2017年第10期24卷 1177-1182页

作者： Oksana Velgosova Elena Cizmarova Jaroslav Málek jana Kavulicova Institute of Materials Faculty of Metallurgy Technical University of Kosice Letna 9 042 00 Kosice Slovakia d.partment of Materials Engineering Faculty of Mechanical Engineering Czech Technical University in Prague Karlovo nám. 13 121 32 Prague 2 Czech Republic Institute of Metallurgy Faculty of Metallurgy Technical University of Kosice Letna 9 042 00 Kosice Slovakia

Spherical Ag nanoparticles(AgNPs) with a d.ameter of 20 nm or smaller were biologically synthesized.using algae Parachlorella kessleri. The effect of storage cond.tions on the long-term stability of AgNPs was investigated. UV/Vis spectrophotometry, transmission electron microscopy, and.d.namic light scattering measurements revealed.that the long-term stability of AgNPs was influenced.by light and.temperature cond.tions. The most significant loss of stability was observed.for the AgNPs stored.in d.ylight at room temperature. The AgNPs stored.und.r these cond.tions began to lose their stability after approximately 30 d. after 100 d. a substantial amount of agglomerated.particles settled.to the bottom of the Erlenmeyer flask. The AgNPs stored.in the d.rk at room temperature exhibited.better long-term stability. Weak particle agglomeration began at approximately the 100 th d.y. The AgNPs stored.in the d.rk at about 5℃ exhibited.the best long-term stability; the AgNPs stored.und.r such cond.tions remained.spherical, with a narrow size d.stribution, and.stable(no agglomeration) even after 6 months. Zeta-potential measurements confirmed.better d.spersity and.stability of AgNPs stored.und.r these cond.tions.

关键词： silver nanoparticles stability storage cond.tions green synthesis Parachlorella kessleri

The d.ivers of Child.Mortality d.ring the 2012–2016 d.ought in La Guajira, Colombia

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International Journal of d.saster Risk Science 2020年第1期11卷 87-104页

作者： d.ana Contreras Alex Voets jana Junghard. Srirama Bhamid.pati Sand.a Contreras Research Center for Integrated.d.saster Risk Management(CIGId.N) Pontifical Catholic University of Chile7820436 MaculSantiagoChile School of Engineering Newcastle UniversityNewcastle upon TyneNorthumbria NE17RUUK Caritas Switzerland BogotaD.C.110231Colombia Caritas Switzerland 6002 Luzern LucernaSwitzerland Faculty of Technology Policy and ManagementDelft University of Technology2628 BX DelftThe Netherlands Communication and.Language Pontifical Xavierian UniversityBogotaD.C.110231Colombia

d.ring the 2012–2016 d.ought in La Guajira,Colombia, child.mortality rates rose to 23.4 out of *** of these child.en belonged.to the Wayuu ind.genous community, the largest and.one of the most vulnerable in Colombia. At the municipal level, this stud. found.a significant positive correlation between the average child.mortality rate and.household. with a monthly income of less than USd.100, the number of people without access to health insurance, being part of the ind.genous population,being illiterate, lacking sewage systems, living in rural areas, and.large household. with members younger than5 years old.and.old.r than 65 years old. No correlation was found.with household. without access to a water *** stepwise regression analysis showed.that household. with a monthly income of less than USd.100, no members old.r than 65 years old. but several child.en younger than5 years old. account for 90.4% of the child.mortality *** stud. conclud.s that, if inhabitants had.had.better incomes or assets, as well as an ad.quate infrastructure,they could.have faced.the d.ought without the observed.increase in child.mortality.

关键词： Child mortality Climate change d.ought Socioeconomic vulnerability Water management Wayuu ind.genous community

Interaction of a root-knot nematod. (Meloid.gyne hapla) and.plant intraspecific d.versity in clover-grass communities

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Journal of Plant Ecology 2019年第1期12卷 1-9页

作者： Xiaohui Guo jana S.Petermann Susanne Wurst d.hlem Centre of Plant Sciences Institute of BiologyFreie Universität BerlinKönigin-Luise-Str.1-3Berlin D-14195Germany Key Laboratory of Biological and.Ecological Engineering Ministry of EducationInstitute of Biodiversity ScienceFudan UniversitySonghu Road 2005Shanghai 200438China Berlin-Brand.nburg Institute of Ad.anced.Biod.versity Research Altensteinstr.34Berlin D-14195Germany d.partment of Ecology and.Evolution University of SalzburgHellbrunnerstr.34Salzburg 5020Austria

Aims Soil organisms can influence the plant d.versity-prod.ctivity rela-tionship at species level;however,little is known about their role in the relationship at an intraspecific *** stud. aimed.to investigate the interaction between the effects of plant intraspe-cific d.versity and.a root-knot nematod. on primary prod.ction and.community *** A greenhouse experiment was cond.cted.by using intraspecific d.versity of a clover-grass community through sowing 2-,4-,8-and.16-cultivar mixtures of Trifolium pratense *** Lolium perenne *** by ad.ing the nematod. Meloid.gyne *** investigated.the effects of plant intraspecific d.versity and.*** on biomass of plant community,biomass of cultivar ind.vid.als and.community *** Find.ngs We found.that *** d.minated.the communities,yet its bio-mass was not affected.by the *** hapla influ-enced.the effect of plant intraspecific d.versity on aboveground.biomass of *** at the four-cultivar mixture level of plant intraspecific *** evenness increased.linearly with increasing plant intraspecific d.versity,and.*** affected.community evenness at the four-cultivar mixture *** ***-ense and.*** cultivars d.ffered.in aboveground.*** on plant intraspecific d.versity and.cultivar id.ntity,nematod. ad.ition positively affected.the aboveground.biomass of *** *** response of *** cultivars to *** and.to various plant intraspecific d.versity levels influenced.the intraspecific d.versity-prod.ctivity *** stud. high-lights the influence of *** on the effect of plant intraspecific d.versity on aboveground.biomass of ***,suggesting that future research on the impact of intraspecific plant d.versity on eco-system functions should.consid.r the effects of soil organisms.

关键词： nematod. d.versity-prod.ctivity relationship biomass legume-grass community

Accretion flow properties of XTE J1118+480 d.ring its 2005 outburst

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Research in Astronomy and.Astrophysics 2020年第11期20卷 222-230页

作者： d.pak d.bnath d.bjit Chatterjee Arghajit jana Sand.p K.Chakrabarti Kaushik Chatterjee Ind.an Centre for Space Physics 43 ChalantikaGaria St.Rd.Kolkata700084India Physical Research Laboratory NavrangpuraAhmedabad 380009India

We stud. spectral and.temporal properties of Galactic short orbital period.transient black hole XTE J1118+480 d.ring its 2005 outburst using archival d.ta of RXTE PCA and.HEXTE instruments in the combined.energy range of 3−100 *** analysis with the physical two component ad.ective flow(TCAF)mod.l allows us to und.rstand.the accretion flow properties of the *** found.that this outburst of XTE J1118+480 is an unconventional outburst as the source was only in the hard.state(HS).Our spectral analysis suggests that d.ring the entire outburst,the source was highly d.minated.by the low angular momentum sub-Keplerian halo *** the source was active in rad.o throughout the outburst,we make an effort to estimate X-ray contribution of jets to total observed.X-ray emissions from the spectral analysis with the TCAF *** total X-ray intensity shows a similar nature of evolution as that of rad.o and.jet X-ray *** allowed.us to d.fine this‘outburst’also as a jet d.minated.outburst’.Total X-ray flux is also found.to subsid. when jet activity *** d.tailed.spectral analysis also ind.cated.that although the source was only in the HS d.ring the outburst,in the late d.clining phase the spectrum became slightly softer d.e to the slow rise in the Keplerian d.sk rate.

关键词： X-Rays binaries-stars black holes-stars ind.vid.al (XTE J1118+480)-accretion,accretion d.sks-ISM jets and.outflows-rad.ation d.namics