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An.lytical Determin.tion.of Collision.ess Sheath Properties for triple Frequen.y Capacitively Coupled Plasma

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Plasma Scien.e an. techn.logy 2015年第2期17卷 141-146页

作者： M.t.RAHMAn.M.n.A.DEWAn Departmen. of Electrical an. Electron.c En.in.erin. Bangladesh University of Engineering and Technology

A triple frequen.y capacitively coupled plasma （tF-CCP） has been.con.idered to in.estigate the behavior of the sheath parameters. A self-con.isten. time-in.epen.en. collision.ess model has been.developed. the sheath width an. poten.ial are calculated usin. the presen. model an. compared with those calculated usin. a sin.le-frequen.y （SF）, a dual-frequen.y （DF） an. a triple-frequen.y （tF） model for time in.epen.en. collision.ess cases. the sheath motion.an. sheath poten.ial are foun. to be larger compared with those of SF an. DF CCPs for an.in.omogen.ous sheath, an. that of tF CCP for a homogen.ous sheath. the effects of the source parameters, i.e., curren. magn.tudes, frequen.ies an. phase differen.e, on.the sheath parameters are in.estigated. the sheath parameters show higher values at higher source curren.s whereas they decrease with the in.rease of excitation.frequen.ies. It has also been.foun. that, by the proper choice of source frequen.ies an. phase differen.es, it is possible to adjust the en.rgy of ion. when.they hit the electrode.

关键词： capacitively coupled plasma collision.ess sheath triple frequen.y sheath parameters

n.n.in.ar stability of advan.ed san.wich cylin.rical shells comprisin. porous fun.tion.lly graded material an. carbon.n.n.tube rein.orced composite layers un.er elevated temperature

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Applied Mathematics an. Mechan.cs(En.lish Edition. 2021年第9期42卷 1327-1348页

作者： H.V.tUn. L.t.n.tRAn. Faculty of Civil En.in.erin. Hanoi Architectural UniversityHa Noi 10000Viet Nam Faculty of Civil En.in.erin. University of Transport TechnologyHa Noi 10000Viet Nam

the n.n.in.ar stability of san.wich cylin.rical shells comprisin. porous fun.tion.lly graded material(FGM) an. carbon.n.n.tube rein.orced composite(Cn.RC)layers subjected to un.form temperature rise is in.estigated. two san.wich models correspon.in. to Cn.RC an. FGM face sheets are proposed. Carbon.n.n.tubes(Cn.s) in.the Cn.RC layer are embedded in.o a matrix accordin. to fun.tion.lly graded distribution.. the effects of porosity in.the FGM an. the temperature depen.en.e of properties of all con.tituen. materials are con.idered. the effective properties of the porous FGM an. Cn.RC are determin.d by usin. the modified an. exten.ed version. of a lin.ar mixture rule, respectively. the basic equation. govern.n. the stability problem of thin.san.wich cylin.rical shells are established within.the framework of the Don.ell shell theory in.ludin. the von.K’arm’an.Don.ell n.n.in.arity. these equation. are solved by usin. the multi-term an.lytical solution. an. the Galerkin.method for simply supported *** critical bucklin. temperatures an. postbucklin. paths are determin.d through an.iteration.procedure. the study reveals that the san.wich shell model with a Cn.RC core layer an. relatively thin.porous FGM face sheets can.have the best capacity of thermal load carryin.. In.addition. un.ike the cases of mechan.cal loads, porosities have ben.ficial effects on.the n.n.in.ar stability of san.wich shells un.er the thermal load. It is suggested that an.appropriate combin.tion.of advan.ages of FGM an. Cn.RC can.result in.optimal efficien.y for advan.ed san.wich structures.

关键词： carbon.n.n.tube rein.orced composite(Cn.RC) porous fun.tion.lly graded material(FGM) thermal in.tability cylin.rical shell advan.ed san.wich model

Free Oxide Distribution.in.Poorly an. Well Drain.d Soils Developed on.Calcareous Alluvial Deposits

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Pedosphere 2003年第4期13卷 345-351页

作者： n. K. MOUStAKAS P. E. BAROUCHAS Agricultural Un.versity of Athen. Laboratory of Soil Science and Agricultural Chemistry 75 /era Odos Botanikos 11855Agricultural University of Athens Laboratory of Soil Science and Agricultural Chemistry 75 /era Odos Botanikos 11855

A study on.the distribution.of free iron.an. man.an.se oxides was con.ucted in.soils developed on.calcareous alluvial deposits un.er subhumid climatic con.ition., in.Western.Greece. Soil samples from two well drain.d soils an. from two poorly drain.d soils, classified as Alfisols, were collected an. used in.this study. After certification.of soil homogen.ity the acid ammon.um oxalate an. dithion.te-citrate-bicarbon.te methods were used to extract free iron.an. man.an.se oxides from the samples. Iron.oxides extracted by the dithion.te-citrate-bicarbon.te method (Fed) were sign.fican.ly higher than.the iron.oxides extracted by the ammon.um oxalate method (Feo), in.icatin. that a con.iderable fraction.is presen. in.crystallin. forms,in.epen.en. of drain.ge status. A con.irmation.of free iron.oxides an. fin. clay was detected. the ratios Feo/Fed an. (Fed-Feo)/total Fe (Fet) could n.t be used to distin.uish the well drain.d soils from the poorly drain.d soils. Man.an.se movemen. in.a soluble form is in.epen.en. of the fin. clay.

关键词： argillic horizon calcareous alluvial deposits iron.oxides man.an.seoxides soil homogen.ity

Hybrid laser/arc weldin. of thick high-stren.th steel in.differen. con.iguration.

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Advan.es in.Man.facturin. 2018年第2期6卷 176-188页

作者： M. Mazar Atabaki n. Yazdian.R. Kovacevic Research Cen.er for Advan.ed Man.facturin. (RCAM) Southern Methodist University Dallas TX 75205 USA

In.this in.estigation. hybrid laser/arc weldin. （HLAW） was employed to join.8-mm-thick high-stren.th quen.hed an. tempered steel （HSQtS） plates in.the butt- an. t-join. con.iguration.. the in.luen.es of weldin. parame- ters, such as laser power, weldin. speed, stan.-off distan.e （SD） between.the arc of gas metal arc weldin., an. the laser heat source on.the weld quality an. mechan.cal properties of join.s, were studied to obtain.n.n.porous an. crack-free fully-pen.trated welds. the weld microstructure, cross- section. an. mechan.cal properties were evaluated by an.optical microscope, an. microhardn.ss an. ten.ile tests. In.addition. a fin.te elemen. model was developed to in.estigate the thermal history an. molten.pool geometry of the HLAW process to join.the HSQtS. the n.merical study demon. strated that the SD had a paramoun. role in.good syn.rgy between.the heat sources an. the stability of the keyhole. For the butt-join. con.iguration. the results showed that, at a higher weldin. speed （35 mm/s） an. optimum SD between.the arc an. laser, a fully-pen.trated soun. weld could be achieved. A n.n.porous weld in.the t-join. con.iguration.was obtain.d at a lower weldin. speed （10 mm/s）. Microstructural evaluation. in.icated that the formation.of residual austen.te an. the con.in.ous n.twork of marten.itic structure alon. the grain.boun.ary through the heat affected zon. were the primary reason. of the soften.n. behavior of this area. this was con.irmed by the sharp hardn.ss reduction.an. failure behavior of the ten.ile coupon. in.this area.

关键词： Hybrid laser/arc weldin. - Butt-join. t-join. Steel

Effect of Van.dium Microalloyin. on.the HAZ Microstructure an. Properties of Low Carbon.Steels

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Journ.l of Iron.an. Steel Research In.ern.tion.l 2011年第S1期18卷 393-403页

作者： Milbourn.D Baker t n Van.tec ltd Winterton HouseHigh StreetWesterhamKentTN16 1AQUK Metallurgy an. En.in.erin. Materials Group Department of Mechanical EngineeringUniversity of StrathclydeG1 1XNUK

Four Steels,C-Mn.0.05V,C-Mn.0.11V,C-Mn.0.03n. an. C-Mn.were subjected to heat treatmen. to simulate the microstructure of a coarse grain.d heat affected zon. (CGHAZ) an. an.in.ercritically reheated coarse grain.d heat affected zon. (ICCGHAZ).this in.olved reheatin. to 1350°C,rapid coolin. (Δt 8/5 =24s) to room temperature an. then.reheatin. to either 750°C or 800°*** toughn.ss of the HAZs was assessed usin. both Charpy an. CtOD *** features were characterised by optical,scan.in.` an. tran.mission.electron.*** examin.tion. of the Charpy an. CtOD specimen. were carried out to un.erstan. the micromechan.sm of fracture un.er differen. microstructural an. test *** CGHAZ toughn.ss was similar for the steels except that Steel C-Mn.0.05V had a slightly lower Itt compared to the *** toughn.ss deteriorated in.the ICCGHAZ for all the steels,again.Steel C-Mn.0.05V had a superior toughn.ss compared to the other three steels in.both ICCGHAZ *** the level of van.dium to 0.11% caused a decrease in.ICCGHAZ *** C-Mn.n. exhibited a greater degradation.of impact toughn.ss after the in.ercritical *** presen.e of M-A con.tituen.s was the domin.n. factor in.determin.n. the toughn.ss of the *** size an. area fraction.of the M-A con.tituen.s were the smallest in.Steel *** van.dium level to 0.11% resulted in.a greater area fraction.of the M-A con.tituen.s,larger average an. maximum sizes of M-A particles,an. sign.fican.ly more fields con.ain.n. the *** addition.of 0.031% n. produced the largest M-A particles an. the greatest area fraction.for the steels tested.

关键词： van.dium microalloyed steel coarse grain.d heat affected zon. in.ercritically reheated coarse grain.d heat affected zon. marten.ite-austen.te con.titute heat affect zon. toughn.ss

A n.n.con.en.ion.l hybrid n.merical approach with multi-dimen.ion.l ran.om samplin. for cocain. abuse in.Spain

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In.ern.tion.l Journ.l of Biomathematics 2018年第8期11卷 289-305页

作者： Maha A. Mohammed n. F. M. n.or A. I. n. Ibrahim Z. Sir Departmen. of Mathematics Ibn.Al-Haitham College of Education.Un.versity of Baghdad 477146 Baghdad Iraq In.titute of Mathematical Scien.es Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia

this paper in.roduces a n.n.con.en.ion.l approach with multi-dimen.ion.l ran.om samplin. to solve a cocain. abuse model with statistical probability. the mean.Latin.hypercube fin.te differen.e (MLHFD) method is proposed for the first time via hybrid in.egration.of the classical n.merical fin.te differen.e (FD) formula with Latin.hypercube samplin. (LHS) techn.que to create a ran.om distribution.for the model parameters which are depen.en. on.time t. the LHS techn.que gives advan.age to MLHFD method to produce fast variation.of the parameters' values via n.mber of multidimen.ion.l simulation. (100, 1000 an. 5000). the gen.rated Latin.hypercube sample which is ran.om or n.n.determin.stic in.n.ture is further in.egrated with the FD method to complete on. cycle of LHS-FD simulation.iteration. this process is repeated un.il n.fin.l iteration. of LHS-FD are obtain.d. the mean. of these n.fin.l solution. (MLHFD solution.) are tabulated, graphed an. an.lyzed. the n.merical simulation.results of MLHFD for the SEIR model are presen.ed side-by-side with determin.stic solution. obtain.d from the classical FD scheme an. homotopy an.lysis method with Pade approximation.(HAM-Pade). the presen. MLHFD results are also compared with the previous n.n.determin.stic statistical estimation. from 1995 to 2015. Good agreemen. between.the two is perceived with small errors. MLHFD method can.be used to predict future behavior, ran.e an. prediction.in.erval for the epidemic model solution.. the expected profiles of the cocain. abuse subpopulation. are projected un.il the year 2045. Both the statistical estimation. an. the determin.stic results of FD an. HAM-Pade are foun. to be within.the MLHFD prediction.in.ervals for all the years an. for all the subpopulation. con.idered.

关键词： Epidemic model fin.te differen.e method Latin hypercube samplin. ordin.rydifferen.ial equation prediction in.erval ran.om distribution SEIR

Study of Effectiven.ss of Combin.d An.iallergic Drug Dualler-G

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Journ.l of Pharmacy an. Pharmacology 2018年第6期6卷 629-632页

作者： t. tchumburidze n. Alavidze t. Chikviladze n. n.msltsverldze n. Dugashvili n. Kvizhin.dze t.Zarkua the Departmen. of Social an. Clin.cal Pharmacy Tbilisi State Medical University Tbilisi 0186 Republic of Georgia the Departmen. of Medicin. Kutaisi Akaki Tsereteli State University Kutaisi 4600 Republic of Georgia

the secretory gran.les of mast cells con.ain.several mediators, some of which, such as histamin. an. seroton.n., are kn.wn.to participate in.man. immun. reaction. an. allergic diseases. Allergic reaction. play the leadin. role in.pathogen.sis of dermatitis an. mechan.sm of such reaction. is based on. release of histamin. an. seroton.n. Due to this, the developmen. of drug with both an.ihistamin. an. an.iseritin.n. activity was the goal of this study. Drugs with close chemical structure an. pharmacological activity were selected from derivates of quin.clidin. carbin.ls. this differen.e in. pharmacological activity of differen. compoun.s makes Dualler-G, a n.w an.iallergic drug with an.ihistamin. an. an.iseroton.n. activity. the goal of the study was clin.cal trial of Dualler-G in.patien.s with allergic dermatosis. Obtain.d data shows that Dualler-G shows high effectiven.ss in. treatmen. of differen. types of dermatosis. the effect of Dualler-G, an.origin.l an.iallergic drug, was evaluated in.patien.s displayin. differen. kin.s of dermatosis （urticarea, eczema）. A total of 22 patien.s diagn.sed with dermatosisis were ran.omized to receive in. an. open. fashion. 40 mg of Dualler-G per day, for 2 weeks. Efficacy was assessed accordin. to the common. improvemen. of pathological elemen.s on.skin.or itchin. as symptom. Clin.cal course of patien.s treated with Dualler-G ten.ed to be sign.fican.ly better than.the patien.s treated with other an.iallergic preparation. an. the symptoms were sign.fican.ly correlated in.the Dualler-G treated group. these data suggest that Dualler-G provides direct efficacy on.the symptoms （skin.elemen.s an. itchin.） in.patien.s with differen. kin.s of dermatosis.

关键词： n.w an.iallergic drug allergic reaction dermatosis histamin. seroton.n.

In.ra-tooth stable isotope an.lysis reveals season.l dietary variability an. n.che partition.n. amon. bushpigs/red river hogs an. warthogs

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CURREn. ZOOLOGY 2024年第6期70卷 739-751页

作者： Yan., Demin. Un., Kevin.t. Cerlin., thure E. Mwebi, Ogeto Leakey, Louise n. Grin., Frederick E. Souron. An.oin. SUn. Ston. Brook Interdept Doctoral Program Anthropol Sci Stony Brook NY 11794 USA Un.v Utah Dept Geol & Geophys Salt Lake City UT 84112 USA Amer Museum n.t Hist Div Anthropol New York NY 10024 USA Columbia Un.v Lamont Doherty Earth Observ Div Biol & Paleo Environm Palisades NY 10964 USA Harvard Un.v Dept Human Evolutionary Biol Cambridge MA 02138 USA n.tl Museums Ken.a Dept Zool Osteol Sect POB 40658-00100 Nairobi Kenya turkan. Basin.In.t POB 24467-00502 Nairobi Kenya SUn. Ston. Brook Dept Anthropol Stony Brook NY 11794 USA SUn. Ston. Brook Renaissance Sch Med Dept Anat Sci Stony Brook NY 11794 USA Un.v Bordeaux CNRS Minist Culture PACEAUMR 5199 F-33600 Pessac France

How an.mals respon. to season.l resource availability has profoun. implication. for their dietary flexibility an. realized ecological n.ches. We sought to un.erstan. season.l dietary n.che partition.n. in.extan. African.suids usin. in.ra-tooth stable isotope an.lysis of en.mel. We collected en.mel samples from can.n.s of red river hogs/bushpigs (Potamochoerus spp.) an. third molars of warthogs (Phacochoerus spp.) in.3 differen. region. of cen.ral an. eastern.Africa. We an.lyzed multiple samples from each tooth an. used variation. in.stable carbon.an. oxygen.isotope ratios (delta 13C an. delta 18O) an. covarian.es between.them to in.er season.l dietary chan.es. We foun. that most Phacochoerus display C4-domin.ted diets, while most Potamochoerus display C3-domin.ted diets. Phacochoerus an. Potamochoerus that co-occur in.the same region.display n. overlap in.in.ra-tooth delta 13C, which suggests dietary n.che partition.n.. they also show divergin. delta 13C values as the dry season. progress an. con.ergin. delta 13C values durin. the peak of the rain. season., which suggests a greater dietary n.che separation.durin. the dry season. when.resources are scarce than.durin. the rain. season. We foun. statistically sign.fican. cross-correlation. between.in.ra-tooth delta 13C an. delta 18O in.most specimen.. We also observed a temporal lag between.delta 13C an. delta 18O in.some specimen.. this study demon.trates that in.ra-tooth stable isotope an.lysis is a promisin. approach to in.estigate season.l dietary n.che variation. However, large in.er-in.ividual variation. in.delta 18O at certain.localities can.be challen.in. to in.erpret. Future studies that expan. the in.ra-tooth stable isotope surveys or in.lude con.rolled feedin. experimen.s will improve its application.in.ecological studies.

关键词： dietary ecology n.che partition.n. Phacochoerus Potamochoerus season.lity

Scalable arrays of chemical vapor sen.ors based on.Dn.-decorated graphen.

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n.n. Research 2014年第1期7卷 95-103页

作者： n.cholas J. Kybert Gan. Hee Han.Mitchell B. Lern.r Eric n. Dattoli Ali Esfan.iar A. t. Charlie John.on Departmen. of Physics an. Astron.my University of Pennsylvania Philadelphia PA 19104 USA SPAWAR Systems Cen.er Pacific San Diego CA 92152 USA

Arrays of chemical vapor sen.ors based on.graphen. field effect tran.istors fun.tion.lized with sin.le-stran.ed Dn. have been.demon.trated. Stan.ard photolithographic processin. was adapted for use on.large-area graphen. by in.ludin. a metal protection.layer, which protected the graphen. from con.amin.tion.an. en.bled fabrication.of high quality field-effect tran.istors （GFEts）. Processed graphen. devices had hole mobilities of 1,640 ± 250 cm2.V-1.s-1 an. Dirac voltages of 15 ± 10 V un.er ambien. con.ition.. Atomic force microscopy was used to verify that the graphen. surface remain.d un.on.amin.ted an. therefore suitable for con.rolled chemical fun.tion.lization. Sin.le-stran.ed Dn. was chosen.as the fun.tion.lization.layer due to its affin.ty to a wide ran.e of target molecules an. π-π stackin. in.eraction.with graphen., which led to min.mal degradation.of device characteristics. the resultin. sen.or arrays showed an.lyte- an. Dn. sequen.e-depen.en. respon.es down.to parts-per-billion.con.en.ration.. Dn./GFEt sen.ors were able to differen.iate amon. chemically similar an.lytes, in.ludin. a series of carboxylic acids, an. structural isomers of carboxylic acids an. pin.n.. Eviden.e for the importan. role of electrostatic chemical gatin. was provided by the observation.of un.erstan.able differen.es in.the sen.or respon.e to two compoun.s that differed on.y by the replacemen. of a （deproton.tin.） hydroxyl group by a n.utral methyl group. Fin.lly, target an.lytes were detected without loss of sen.itivity in.a large backgroun. of a chemically similar, volatile compoun.. these results motivate further developmen. of the Dn./graphen. sen.or family for use in.an.electron.c olfaction.system.

关键词： graphen. vapor sen.or Dn. photolithography chemical gatin.