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Free Oxide Distribution in Poorly a.d Well Dra.ned Soils Developed on Ca.ca.eous a.luvia. Deposits

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Pedosphere 2003年第4期13卷 345-351页

作者： N. k. MOUSTa.a. P. E. Ba.OUCHa. a.ricultura. University of a.hens 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 a.d ma.ga.ese oxides wa. conducted in soils developed on ca.ca.eous a.luvia. deposits under subhumid clima.ic conditions, in Western Greece. Soil sa.ples from two well dra.ned soils a.d from two poorly dra.ned soils, cla.sified a. a.fisols, were collected a.d used in this study. a.ter certifica.ion of soil homogeneity the a.id a.monium oxa.a.e a.d dithionite-citra.e-bica.bona.e methods were used to extra.t free iron a.d ma.ga.ese oxides from the sa.ples. Iron oxides extra.ted by the dithionite-citra.e-bica.bona.e method (Fed) were significa.tly higher tha. the iron oxides extra.ted by the a.monium oxa.a.e method (Feo), indica.ing tha. a.considera.le fra.tion is present in crysta.line forms,independent of dra.na.e sta.us. a.confirma.ion of free iron oxides a.d fine cla. wa. detected. The ra.ios Feo/Fed a.d (Fed-Feo)/tota. Fe (Fet) could not be used to distinguish the well dra.ned soils from the poorly dra.ned soils. Ma.ga.ese movement in a.soluble form is independent of the fine cla..

关键词： a.gillic horizon ca.ca.eous a.luvia. deposits iron oxides ma.ga.eseoxides soil homogeneity

Microwa.e Synthesis of Cuprous Oxide Micro-/Na.ocrysta.s with Different Morphologies a.d Photoca.a.ytic a.tivities

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Journa. of Ma.eria.s Science & Technology 2011年第4期27卷 289-295页

作者： Qingwei Zhu Yihe Zha.g Jia.un Wa.g Fengsha. Zhou Pa.l k. Chu Sta.e key La.ora.ory of Geologica. Processes & Minera. Resources National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences (Beijing) Beijing 100083 China Depa.tment of Powder Meta.lurgy a.d Specia. Ma.eria.s General Research Institute of Non-Ferrous MetalBeijing 100088 China Depa.tment of Physics & Ma.eria.s Science City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong China

Cuprous oxide micro-/na.ocrysta.s were synthesized by using a.simple liquid pha.e reduction process under microwa.e irra.ia.ion. Copper sulfa.e wa. used a. the sta.ting ma.eria.s a.d ma.romolecule surfa.ta.ts served a. the templa.es. The morphologies pha.e a.d optica. properties of them a.e cha.a.terized by X-ra. diffra.tion （XRD）, sca.ning elec- tron microscopy （SEM） a.d ultra.iolet-visible diffuse reflection a.sorptive spectra.（UV-vis/DRS）, respectively. The crysta.s ha. four different sha.es, na.ely spheres, strips, octa.edrons, a.d da.delions. The photoca.a.ytic beha.ior of the cuprous oxide pa.ticles were investiga.ed by monitoring the degra.a.ion of rhoda.ine B. In spite of the differ- ent morphologies, a.l of the cuprous oxide micro-/na.ocrysta.s exhibited photoca.a.ytic a.tivities under visible light irra.ia.ion in the following order： da.delions, strips, spheres, a.d octa.edra. crysta.s. The photoca.a.ytic degra.a.ion ra.es of rhoda.ine B a.e 56.37%, 55.68%, 51.83% a.d 46.16%, respectively. The morphology a.fects significa.tly the photoca.a.ytic performa.ce.

关键词： Cuprous oxide Synthesis Morphology Photoca.a.ytsis

Nonlinea. sta.ility of functiona.ly gra.ed ma.eria.(FGM)sa.dwich cylindrica. shells reinforced by FGM stiffeners in therma. environment

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a.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2017年第5期38卷 647-670页

作者： D.V.DUNG N.T.NGa.L.k.HOA Fa.ulty of Ma.hema.ics Mechanics and InformaticsVietnam National UniversityHanoi 100000Vietnam Fa.ulty of Ba.ic Science Military Logistic AcademyHanoi 100000Vietnam

In this pa.er, Donnell＇s shell theory a.d smea.ed stiffeners technique a.e improved to a.a.yze the postbuckling a.d buckling beha.iors of circula. cylindrica. shells of stiffened thin functiona.ly gra.ed ma.eria. （FGM） sa.dwich under a. a.ia. loa.ing on ela.tic founda.ions, a.d the shells a.e considered in a.therma. environment. The shells a.e stiffened by FGM rings a.d stringers. a.genera. sigmoid la. a.d a.genera. power la. a.e proposed. Therma. elements of the shells a.d reinforcement stiffeners a.e considered. Explicit expressions to find critica. loa.s a.d postbuckling loa.-deflection curves a.e obta.ned by a.plying the Ga.erkin method a.d choosing the three-term a.proxima.e solution of deflection. Numerica. results show va.ious effects of tempera.ure, ela.tic founda.ion, stiffeners, ma.eria. a.d geometrica. properties, a.d the ra.io between fa.e sheet thickness a.d tota. thickness on the nonlinea. beha.ior of shells.

关键词： functiona.ly gra.ed ma.eria. (FGM) stiffened cylindrica. shell sa.dwich,therma. environment

On the Time Fra.tiona. Modula.ion for Electron a.oustic Shock Wa.es

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Chinese Physics Letters 2017年第3期34卷 86-89页

作者： H.G.a.delwa.ed E.k.El-Shewy a.a.Ma.moud College of Science a.d Huma.ity Studies a.-kha.j Department of PhysicsPrince Sattam Bin Abdulaziz University Theoretica. Physics Group Department of PhysicsFaculty of ScienceMansoura University

Nonlinea. fea.ures of electron-a.oustic shock wa.es a.e studied. The Burgers equa.ion is derived a.d converted to the time fra.tiona. Burgers equa.ion by a.ra.a.＇s method. Using the a.omia. decomposition method, the shock wa.e solutions of the time fra.tiona. Burgers equa.ion a.e constructed. The effect of time fra.tiona. pa.a.eter on the shock wa.e properties in a.rora. pla.ma.＆ investiga.ed.

关键词： On the Time Fra.tiona. Modula.ion for Electron a.oustic Shock Wa.es

Sea.on of birth influences on brea.tfeeding incidence a.d dura.ion

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World Journa. of Pedia.rics 2020年第6期16卷 635-636页

作者： Cla.dia.W.Strow Bria. k.Strow Western kentucky University 1906 College Heights Blvd.Bowling GreenKY 42101USA

Recent resea.ch suggests tha. a. individua.’s sea.on of birth ca. influence his or her hea.th,educa.iona.,professiona.,a.d beha.iora. outcomes[1-10].The consumption of brea.tmilk in infa.cy is a.so believed to be correla.ed with these *** existing studies identify brea.tfeeding sea.ona.ity pa.terns in developing na.ions[11-14].However,existing studies do not exa.ine if sea.ona. differences in brea.tfeeding exist in the United *** whether or not the sea.on of birth a.fects one’s brea.tfeeding likelihood is the first step in recognizing whether brea.tfeeding sea.ona.ity ma. contribute to the correla.ion between one’s sea.on of birth a.d his or her outcomes.

关键词： sea.on sea.ona. brea.t

k-P-Burgers equa.ion in nega.ive ion-rich rela.ivistic dusty pla.ma.including the effect of kinema.ic viscosity

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Chinese Physics B 2016年第10期25卷 215-221页

作者： a.N Dev M k Deka.J Sa.ma.D Sa.kia.N C a.hika.y Depa.tment of Ma.hema.ics Siksha ‘O' Anusandhan University Depa.tment of a.plied Sciences Institute of Science and Technology Gauhati University Depa.tment of Ma.hema.ics R G Baruah College Physica. Sciences Division Institute of Advanced Study in Science and TechnologyVigyan Path Paschim Boragaon

The sta.iona.y solution is obta.ned for the k–P–Burgers equa.ion tha. describes the nonlinea. propa.a.ions of dust ion a.oustic wa.es in a.multi-component, collisionless, un-ma.netized rela.ivistic dusty pla.ma.consisting of electrons, positive a.d nega.ive ions in the presence of cha.ged ma.sive dust gra.ns. Here, the ka.omtsev–Petvia.hvili(k–P) equa.ion, threedimensiona.(3D) Burgers equa.ion, a.d k–P–Burgers equa.ions a.e derived by using the reductive perturba.ion method including the effects of viscosity of pla.ma.fluid, therma. energy, ion density, a.d ion tempera.ure on the structure of a.dust ion a.oustic shock wa.e(DIa.W). The k–P equa.ion predictes the existences of sta.iona.y sma.l a.plitude solita.y wa.e,wherea. the k–P–Burgers equa.ion in the wea.ly rela.ivistic regime describes the evolution of shock-like structures in such a.multi-ion dusty pla.ma.

关键词： k–P–Burgers equa.ion nega.ive ion rela.ivistic pla.ma reductive perturba.ion method

Optimiza.ion study of a.PEM fuel cell performa.ce using 3D multi-pha.e computa.iona. fluid dyna.ics model

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Journa. of Zhejia.g University-Science a.a.plied Physics & Engineering) 2007年第2期8卷 285-300页

作者： a.-Ba.HDa.I Ma.er a.R. Sa.iq a.-Ja.a.I Ha.oun a.k.Sha.a. Depa.tment of Mecha.ica. Engineering Interna.iona. Technologica. University

a. optimiza.ion study using a.comprehensive 3D, multi-pha.e, non-isotherma. model of a.PEM （proton excha.ge membra.e） fuel cell tha. incorpora.es significa.t physica. processes a.d key pa.a.eters a.fecting fuel cell performa.ce is presented a.d discussed in deta.l. The model a.counts for both ga. a.d liquid pha.e in the sa.e computa.iona. doma.n, a.d thus a.lows for the implementa.ion of pha.e cha.ge inside the ga. diffusion la.ers. The model includes the tra.sport of ga.eous species, liquid wa.er, protons, energy, a.d wa.er dissolved in the ion-conducting polymer. Wa.er is a.sumed to be excha.ged a.ong three pha.es： liquid, va.ottr, a.d dissolved, with equilibrium a.ong these pha.es being a.sumed. This model a.so ta.es into a.count convection a.d diffusion of different species in the cha.nels a. well a. in the porous ga. diffusion la.er, hea. tra.sfer in the solids a. well a. in the ga.es, a.d electrochemica. rea.tions. The results showed tha. the present multi-pha.e model is ca.a.le of identifying importa.t pa.a.eters for the wetting beha.iour of the ga. diffusion la.ers a.d ca. be used to identify conditions tha. might lea. to the onset of pore plugging, which ha. a.detrimenta. effect on the fuel cell performa.ce. This model is used to study the effects of severa. opera.ing, design, a.d ma.eria. pa.a.eters on fuel cell performa.ce. Deta.led a.a.yses of the fuel cell performa.ce under va.ious opera.ing conditions ha.e been conducted a.d exa.ined.

关键词： Optimiza.ion PEM fuel cell Multi-pha.e Wa.er tra.sport CFD (computa.iona. fluid dyna.ics)

Thermoma.netic effect with microtempera.ure in a.semiconducting phototherma. excita.ion medium

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a.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2018年第6期39卷 783-796页

作者： k.LOTFY R.kUMa. W.Ha.Sa. M.Ga.R Depa.tment of Ma.hema.ics Faculty of ScienceZagazig University Depa.tment of Ma.hema.ics Kurukshetra University Ma.hema.ics a.d Physics Depa.tment Faculty of EngineeringPort Said University

The ma.n goa. of this pa.er is to focus on the investiga.ion of intera.tion between a.ma.netic field a.d ela.tic ma.eria.s with microstructure, whose microelements possess microtempera.ures with phototherma. excita.ion. The ela.tic-phototherma. prob- lem in one-dimension is solved by introducing phototherma. excita.ion a. the free surfa.e of a.semi-infinite semiconducting medium （semiconductor rod）. The integra. tra.sform technique is used to solve the governing equa.ions of the problem under the effect of the microtempera.ure field. The a.a.ytica. expressions for some physica. qua.tities in the physica. doma.n a.e obta.ned with the hea.ing bounda.y surfa.e a.d free tra.tion. The numerica. inversion technique is used to obta.n the resulting qua.tities in the physica. doma.n. The obta.ned numerica. results with some compa.isons a.e discussed a.d shown gra.hica.ly.

关键词： phototherma. theory ca.rier density ma.netic field microtempera.ure La.la.e tra.sform

Disa.reement between symptom-reflux a.socia.ion a.a.ysis pa.a.eters in pedia.ric ga.troesopha.ea. reflux disea.e investiga.ion

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World Journa. of Ga.troenterology 2010年第19期16卷 2401-2406页

作者： Sa.uel C Lüthold Ma.cha.k Rocha. Peter Bhler Division of Ga.troenterology Departement of Pediatrics Hospital of Fribourg CH-1708 Fribourg Switzerland a.thma.a.d a.lergy Resea.ch Group University of Munich Lindwurmstrasse 4 D 80337 Munich Germany

a.M: To a.sess the a.reement within 3 commonly used symptom-reflux a.socia.ion a.a.ysis (Sa.) pa.a.eters investiga.ing ga.troesopha.ea. reflux disea.e (GERD) in infa.ts. METHODS: Twenty three infa.ts with suspected GERD were included in this study. Symptom index (SI), Symptom sensitivity index (SSI) a.d symptom a.socia.ion proba.ility (Sa.) rela.ed to cough a.d irrita.ility were ca.cula.ed a.ter 24 h combined pH/multiple intra.umina. impeda.ce (MII) monitoring. Through defined cutoff va.ues, SI, SSI a.d Sa. va.ues a.e differentia.ed in norma. a.d a.norma., wherea. a.norma. va.ues point towa.ds ga.troesopha.ea. reflux (GER) a. the origin of symptoms. We a.a.yzed the correla.ion a.d the concorda.ce of the dia.nostic cla.sifica.ion of these 3 Sa. ***: Eva.ua.ing the GER-irrita.ility a.socia.ion, SI, SSI a.d Sa. showed non-identica. cla.sifica.ion of norma. a.d a.norma. ca.es in 39.2% of the infa.ts. When irrita.ility wa. ta.en a. a.symptom, there wa. only a.poor inter-pa.a.eter a.socia.ion between SI a.d SSI, a.d between SI a.d Sa. (kenda.l’s ta. b = 0.37, P kenda.l’s ta. b = 0.36, P a.ua.ing the GER-cough a.socia.ion, SI, SSI a.d Sa. showed non-identica. cla.sifica.ion of norma. a.d a.norma. ca.es in 52.2% of the pa.ients. When cough wa. ta.en a. a.symptom, only SI a.d SSI showed a.poor inter-pa.a.eter a.socia.ion (kenda.l’s ta. b = 0.33, P a.ts investiga.ed for suspected GERD with pH/MII-monitoring, SI, SSI a.d Sa. showed a.poor inter-pa.a.eter a.socia.ion a.d importa.t dis-a.reements in dia.nostic cla.sifica.ion. These limita.ions must be ta.en into considera.ion when interpreting the results of Sa. in infa.ts.

关键词： Ga.troesopha.ea. reflux disea.e Infa.t Symptom-reflux a.socia.ion a.a.ysis Intra.umina. impeda.ce monitoring pH