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f.o. and Nutritio. Sciences 2017年第12期8卷 1085-1092页

作者： o. A. Awo.inka J. o. Awe o. A. o.o.ebi o. o.uko.a f. C. o.adele B. A. o.o.0}nbiyi M. f. Asao.u Department o.0}Bio.hemistry Co.lege o.0}Medicine Ekiti State University Ado Ekiti Nigeria Department o.0}Chemical Sciences (Bio.hemistry Unit) Afe Babalola University Ado Ekiti Nigeria Department o.0}Science Labo.ato.y Techno.o.y Ekiti State University Ado Ekiti Nigeria Ekiti State University Teaching Ho.pital Ado Ekiti Nigeria Department o.0}Bio.hemistry Ekiti State University Ado Ekiti Nigeria

Lectin purif.ed f.o. wild underutilized lo.al bean—o.ili, f.regede, Pakalai was co.paratively characterized and f.rther evaluated f.r interactio. with gastro.ntestinal bacteria—Esherichia co.i and Staphylo.o.cus aureus. The purif.ed lectin in all the bean samples sho.ed to.be gluco.e and sucro.e binding. The hemagglutinating activity, was no. selective to.type o.0}blo.d gro.p (A, B, AB and o.. Anti-bacteria interactio. with Escherichia co.i sho.ed clear zo.e o.0}inhibitio. o.0}abo.t 1.5 ± 0.5 mm with lectin f.o. f.regede and o.ili while there was slight agglutinatio. with lectin f.o. Pakala. Staphylo.o.cus aureus sensitivity to.the lectin extracted f.o. o.ili with clear zo.e o.0}inhibitio. o.0}2.0 ± 0.5 mm was also.f.und in the co.tro. chlo.amphenico.. Ho.ever there was pro.o.nced agglutinatio. with lectin f.o. f.regede and Pakala with Staphylo.o.cus auereus. This may be a clear indicatio. that lectin f.o. lo.al underutilized wild bean understudy will agglutinate and interact with a gram po.itive bacteria mo.e than gram negative bacteria.

关键词： Staphylo.cus aereus Lectin Gluco.e Gastro.ntestinal Sucro.e Patho.enic

Co.bined Chemical and Mineralo.ical Evidence f.r Heavy Metal Binding in Mining- and Smelting-Af.ected Alluvial So.ls

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Pedo.phere 2008年第4期18卷 464-478页

作者： A. VANEK V. ETTLER T. GRYGAR L. Bo.UVKA o. EBEK o. DRBEK Department o.0}So.l Science and So.l Pro.ectio. Czech University of Life Sciences Prague Kamyck 129 165 21 Praha6 (Czech Republic). Institute o.0}Geo.hemistry Mineralogy and Mineral Resources Charles University Albertov 6 128 43 Praha 2 (CzechRepublic) Institute o.0}Ino.ganic Chemistry Analytical Laboratory Academy of Sciences of the Czech Republic 250 68 Rez u Prahy(Czech Republic)

The binding o.0}metallic co.taminants （Pb, Cd, and Zn） and As o. so.l co.stituents was studied o. f.ur highly co.taxninated alluvial so.l pro.0}les f.o. the mining/smelting district o.0}Pribram （Czech Republic） using a co.binatio. o.0}mineralo.ical and chemical metho.s. Sequential extractio. analysis （SEA） was supplemented by mineralo.ical investigatio. o.0}bo.h bulk samples and heavy mineral f.actio.s using X-ray dif.ractio. analysis （XRD） and scanning electro. micro.co.y with an energy dispersive X-ray spectro.eter （SEM/EDS）. The mineralo.y o.0}f. and Mn o.ides was studied by vo.tammetry o.0}micro.articles （VMP） and dif.use ref.ectance spectro.etry （DRS）. Zinc and Pb were predo.inantly bo.nd in the reducible f.actio. attributed to.f. o.ides and Mn o.ides （mainly birnessite, Na4Mn14o.7.9H2o., which were detected in so.ls by XRD and SEM/EDS. In co.trast, Cd was the mo.t mo.ile co.taminant and was predo.inantly present in the exchangeable f.actio.. Arsenic was bo.nd to.the residual and reducible f.actio.s （co.respo.ding to.f. o.ides o. to.unidentif.ed f.-Pb arsenates）. SEM/EDS o.servatio.s indicate the predo.inant af.inity o.0}Pb f.r Mn o.ides, and to.a lesser extent, f.r f. o.ides. Thus, a mo.e suitable SEA pro.edure sho.ld be used f.r these mining-af.ected so.ls to.distinguish between the co.taminant f.actio. bo.nd to.Mn o.ides and f. o.ides.

关键词： alluvial so.l f. and Mn o.ides heavy metals mineralo.y mining

Co.l mining in no.theast India： an o.erview o.0}enviro.mental issues and treatment appro.ches

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Internatio.al Jo.rnal o.0}Co.l Science & Techno.o.y 2016年第2期3卷 87-96页

作者： Mayuri Chabukdhara o. P. Singh Department o.0}Enviro.mental Bio.o.y and Wildlif. Sciences Cotton College State University Guwahati Assam 781001India Department o.0}Enviro.mental Studies North Eastern HillUniversity Shillong Meghalaya 793022 India

No.theast India has a go.d depo.it o.0}sub-bitumino.s tertiary co.l. The no.theast Indian co.ls have unusual physico.chemical characteristics such as high sulf.r, vo.atile matter and vitrinite co.tent, and lo. ash co.tent. In additio., many enviro.mental sensitive o.ganic and mineral bo.nd elements such as f., Mg, Bi, AI, V, Cu, Cd, Ni, Pb, and Mn etc. remain enriched in these co.ls. Such characteristics are asso.iated with mo.e severe enviro.mental impacts due to.mining and its utilizatio. in co.l based industries. Enviro.mental challenges include large scale landscape damage, so.l ero.io., lo.s o.0}f.rest eco.ystem and wildlif. habitat, air, water and so.l po.lutio.. Several physical and chemical metho.s are repo.ted in literature f.r the remo.al o.0}mineral matter, to.al sulf.r and dif.erent f.rms o.0}sulf.r f.o. high sulf.r co.l in no.theast India. This paper may help dif.erent researchers and stakeho.ders to.understand current state o.0}research in the f.eld. Initiatives may be taken to.ards sustainable use o.0}co.l reso.rces by ado.ting inno.ative clean techno.o.ies and by implementing ef.ective co.tro. measures and regulato.y po.icies.

关键词： No.theast India Sub-bitumino.s co.l Enviro.mental issues Inno.ative techno.o.ies Management andregulato.y po.icies

Numerical Uncertainty and Its Implicatio.s

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Jo.rnal o.0}Applied Mathematics and Physics 2014年第3期2卷 33-44页

作者： António.f. Ro.rigues Nuno.o. Martins Campus de Angra do.Hero.smo University of the Azores Angra do Heroísmo Portugal

A scrutiny o.0}the co.tributio.s o.0}key mathematicians and scientists sho.s that there has been much co.tro.ersy (thro.gho.t the develo.ment o.0}mathematics and science) co.cerning the use o.0}mathematics and the nature o.0}mathematics to.. In this wo.k, we try to.sho. that arithmetical o.eratio.s o.0}appro.imatio. lead to.the existence o.0}a numerical uncertainty, which is quantic, path dependent and also.dependent o. the number system used, with mathematical and physical implicatio.s. When we explo.e the algebraic equatio.s f.r the f.ne structure co.stant, the co.ditio.s expo.ed in this wo.k generate parado.ical physical co.ditio.s, where the so.utio. to.the parado. may be in the f.ct that the f.ne-structure co.stant is calculated thro.gh dif.erent ways in o.der to.o.tain the same value, but there is no.relatio.ship between the f.ndamental physical pro.esses which underlie the calculatio.s, since we are merely dealing with algebraic relatio.s, despite the expressio.s having the same physical dimensio.s.

关键词： Geo.etry Algebra Numerical Uncertainty f.ne Structure Co.stant and Physical Uncertainty

Co.tro. o.0}a Two.wheeled Machine with Two.directio.s Handling Mechanism Using PID and PD-f.C Algo.ithms

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Internatio.al Jo.rnal o.0}Auto.atio. and co.puting 2019年第4期16卷 511-533页

作者： Khaled M. Go.er Sulaiman o. f.dlallah Scho.l o.0}Engineering University of Lincoln Lincoln LN6 7TS UK Mechanical Engineering Department Auckland University of Technology Auckland 1142 New Zealand

This paper presents a no.el f.ve degrees o.0}f.eedo. (Do.0} two.wheeled ro.o.ic machine (TWRM) that delivers so.utio.s f.r bo.h industrial and service ro.o.ic applicatio.s by enlarging the vehicle′s wo.kspace and increasing its f.exibility. Designing a two.wheeled ro.o. with f.ve degrees o.0}f.eedo. creates a high challenge f.r the co.tro., theref.re the mo.elling and design o.0}such ro.o. sho.ld be precise with a unif.rm distributio. o.0}mass o.er the ro.o. and the actuato.s. By emplo.ing the Lagrangian mo.elling appro.ch, the TWRM′s mathematical mo.el is derived and simulated in Matlab/Simulink?. f.r stabilizing the system′s highly no.linear mo.el, two.co.tro. appro.ches were develo.ed and implemented: pro.o.tio.al-integral-derivative (PID) and f.zzy lo.ic co.tro. (f.C) strategies. Co.sidering multiple scenario. with dif.erent initial co.ditio.s, the pro.o.ed co.tro. strategies′ perf.rmance has been assessed.

关键词： Two.wheeled inverted pendulum (IP) with two directio. handling Lagrangian f.rmulatio. pro.o.tio.al-integral-derivative (PID) f.zzy lo.ic co.tro. (f.C) under-actuated systems

Sho.t-term captivity inf.uences maximal co.d-induced metabo.ic rates and their repeatability in summer-acclimatized American go.df.nches Spinus tristis

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Current Zo.lo.y 2013年第4期59卷 439-448页

作者： David L. SWANSo. Marisa o. KING Department o.0}Bio.o.y University of South Dakota Vermillion SD 57069 USA

Studies o.0}metabo.ic variatio. in birds have invo.ved bo.h wild and captive individuals, but f.w studies have investi- gated whether captivity directly inf.uences metabo.ic rates, despite such variatio. po.entially co.f.unding co.clusio.s regarding ho. metabo.ic rates respo.d to.the co.ditio.s under study. In additio., whether sho.t-term captivity inf.uences metabo.ic rate re- peatability in birds is currently uninvestigated. In this study, we measured Msum （maximal co.d-induced metabo.ic rates） in sum- mer acclimatized American go.df.nches Spinus tristis directly af.er capture f.o. wild po.ulatio.s, af.er appro.imately 2 weeks o.0}indo.r captivity （Captive 1）, and again af.er an additio.al 1-2 weeks o.0}captivity （Captive 2）. M~ increased signif.cantly （16.9%） f.llo.ing the initial captive perio., but remained stable thereaf.er. Bo.y mass （Mb） also.increased signif.cantly （9.2%） during the initial captive perio. but remained stable thereaf.er, suggesting that muscle gro.th and/o. remo.eling o.0}bo.y co.po.itio. pro. duced the o.served metabo.ic variatio.. Mb and Msum were no. signif.cantly repeatable between wild and Captive 1 birds, but were signif.cantly repeatable between Captive 1 and Captive 2 gro.ps. These data suggest that cautio. must be exercised when extrapo.ating metabo.ic rates f.o. sho.t-term captive to.wild po.ulatio.s. In additio., Msum was a repeatable trait f.r birds under co.ditio.s where mean metabo.ic rates remained stable, but Msum repeatability disappeared during acclimatio. to.co.ditio.s pro. mo.ing pheno.ypically f.exible metabo.ic respo.ses. This suggests that the capacity f.r pheno.ypic f.exibility varies amo.g indi- viduals, and such variatio. co.ld have f.tness co.sequences

关键词： Metabo.ic rates Msm Birds Captivity Repeatability Pheno.ypic f.exibility

Behavio.al co.straints and the evo.utio. o.0}f.ithf.l so.ial learning

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Current Zo.lo.y 2012年第2期58卷 307-318页

作者： Alberto.ACERBI Pierre o. JACQUET Claudio.TENNIE Center f.r the Study o.0}Cultural Evo.utio. University of Stockholm 106 91 Stockholm Sweden Department o.0}Psycho.o.y University of Bologna Bologna Italy INSERM U1028 CNRS UMR5292 Lyon Neuroscience Research Center ImpAct Team Lyon France Department o.0}Develo.mental and Co.parative Psycho.o.y Max Planck Institute for Evolutionary Anthropology Leipzig Germany

Behavio.al ＂traditio.s＂, i.e. behavio.al patterns that are acquired with the aid o.0}so.ial learning and that are relatively stable in a gro.p, have been o.served in several species. Recently, ho.ever, it has been questio.ed whether no.-human so.ial learning is f.ithf.l eno.gh to.stabilize tho.e patterns. The o.served stability co.ld be interpreted as a result o.0}vario.s co.straints that limit the number o.0}po.sible alternative behavio.s, rather than o.0}the f.delity o.0}transmissio. mechanisms. Tho.e co.straints can be ro.ghly described as ＂internal＂, such as mechanical （bo.ily） pro.erties o. co.nitive limitatio.s and predispo.itio.s, and ＂ex- ternal＂, such as eco.o.ical availability o. pressures. Here we present an evo.utio.ary individual-based mo.el that explo.es the re- latio.ships between the evo.utio. o.0}f.ithf.l so.ial learning and behavio.al co.straints, represented bo.h by the size o.0}the beha- vio.al reperto.re and by the ＂shape＂ o.0}the search space o.0}a given task. We sho. that the evo.utio. o.0}high-f.delity transmissio. mechanisms, when asso.iated with co.ts （e.g. co.nitive, bio.echanical, energetic, etc.）, is o.ly likely if.the po.ential behavio.al reperto.re o.0}a species is large and if.the search space do.s no. pro.ide inf.rmatio. that can be explo.ted by individual learning. Mo.eo.er we sho. ho. stable behavio.al patterns （＂traditio.s＂） can be achieved at the po.ulatio. level as an o.tco.e o.0}bo.h high-f.delity and lo.-f.delity transmissio. mechanisms, given that the latter are co.pled with a small behavio.al reperto.re o. with a search space that pro.ide substantial f.edback. f.nally, by intro.ucing the po.sibility o.0}enviro.mental change, we sho. that intermediate rates o.0}change f.vo. the evo.utio. o.0}f.ithf.l so.ial learning

关键词： Animal so.ial learning Cultural evo.utio. Cultural transmissio. Co.ying f.delity Individual based mo.eling

Wo.king Capital Management and f.rms’ Pro.0}tability: Evidence f.o. Quo.ed f.rms o. the Nigerian Sto.k Exchange

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Intelligent Inf.rmatio. Management 2019年第3期11卷 43-60页

作者： f. o. o.ao.e J. A. Adekanbi o. E. o.uwadare Department o.0}Acco.nting Ekiti State University Ekiti State Nigeria

o.er the years, it appeared that f.rms f.iled to.subject sho.t-term investments to.pro.er management thereby leading to.either excessive o. inadequate wo.king capital which in turn af.ected their pro.0}tability. To.empirically satisf. this, this paper examined wo.king capital management and f.rms’ pro.0}tability in Nigeria quo.ed f.rms o. Nigerian Sto.k Exchange (NSE). A panel data metho.o.o.y was used with dif.erent regressio. estimato.s to.analyze this relatio.ship based o. a balanced panel o.0}10 listed f.rms during the perio. 2008-2017. It was disco.ered that cash co.lectio. perio. and cash payment perio. exerted a negative impact o. return o. assets, tho.gh the impact was o.ly signif.cant f.r cash payment perio. o. the gro.nd o.0}−0.064 (p = 0.000 −0.032 (p = 0.077 > 0.05). Also.disco.ered was that bo.h the current ratio.and invento.y perio. exerted a po.itive impact o. return o. assets, tho.gh the impact was o.ly signif.cant f.r current ratio.o. the gro.nd o.0}8.172 (p = 0.000 0.05). The study co.cluded that wo.king capital management af.ected f.rms’ pro.0}tability in Nigeria. Theref.re it was reco.mended that while the sho.ter co.lectio. was maintained, payment to.credito.s sho.ld no. be elo.gated so.as to.enjo. cash disco.nt (if.any) and that f.rms sho.ld be pro.ctive in the management o.0}raw materials in o.der to.avo.d idle reso.rces that might negatively impact their f.nancial perf.rmance.

关键词： Wo.king Capital Management Return o. Assets Cash Co.lectio. Perio. Cash Payment Perio. Current Ratio Invento.y Perio.

Wind Generatio. Mo.eling f.r Transmissio. Systems Adequacy Studies with Eco.o.ic Dispatch

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Jo.rnal o.0}Energy and Po.er Engineering 2011年第9期5卷 848-861页

作者： f. Vallee J. Lo.ry o. Deblecker Department o.0}Electrical Engineering University of Mons Mons 7000 Belgium

In this paper, a strategy is pro.o.ed in o.der to.intro.uce in a realistic way wind generatio. into.a HL11 （bulk po.er system） no. sequential Mo.te Carlo.adequacy study with eco.o.ic dispatch. Thanks to.the implemented so.utio., wind generatio. is co.sequently co.f.o.ted to.o.eratio.al co.straints related to.high po.ered thermal units, nuclear parks o. thermal machines with technical minimum value. Mo.eo.er, during each simulated system state, a DC lo.d f.o. is also.calculated in o.der to.evaluate reinf.rcements o.timizing the large scale integratio. o.0}wind po.er pro.uctio.. The simulatio. to.l mo.if.ed during the present wo.k is called Scanner and is the pro.erty o.0}Tractebel Engineering （Gaz de f.ance-Suez） co.pany. It has been here applied to.an academic test system： the Ro. Billinto. Test System （RBTS）.

关键词： Transmissio. system wind generatio. netwo.k reinf.rcement investments HLII reliability

Irreversibility analysis o.0}unsteady co.ette f.o. with variable visco.ity

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Jo.rnal o.0}Hydro.ynamics 2015年第2期27卷 304-310页

作者： EEGUNJo.I A.S. MAKINDE o.D. TSHEHLA M.S. f.ANKS o. Department o.0}Mathematics and Statistics Namibia University of Science and Technology f.culty o.0}Military Science Stellenbosch University f.culty o.0}Engineering Built Enviro.ment and Inf.rmatio. Techno.o.y Nelson Mandela Metropolitan University f.culty o.0}Military Science Stellenbosch University

This paper investigates numerically the inherent irreversibility in unsteady generalized Co.ette f.o. between two.parallel plates with variable visco.ity. The no.linear go.erning equatio.s are derived f.o. the Navier-Sto.es equatio.s and so.ved numerically using a semi-discretizatio. f.nite dif.erence metho. to.ether with the Runge-Kutta-f.hlberg integratio. scheme. The pro.0}les o.0}velo.ity and the temperature o.tained are used to.co.pute the entro.y generatio. number, Bejan number, skin f.ictio. and Nusselt number. The ef.ects o.0}embedded parameters o. entire f.o. structure are presented graphically and discussed quantitatively.

关键词： parallel plates variable visco.ity heat transf.r Co.ette f.o. entro.y generatio.