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The Study on Motion of a.Rigid Body Ca.rying a.Rota.ing Ma.s

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Journa. of a.plied Ma.hema.ics a.d Physics 2017年第1期5卷 110-121页

作者： a. a. galal W. K. Za.ra.H. F. Elka.ly Engineering Physics a.d Ma.hema.ics Depa.tment Faculty of Engineering Tanta University Tanta Egypt Depa.tment of Ma.hema.ics Basic and Applied Sciences School The Egypt-Japan University of Science and Technology (E-JUST) New Borg El-Arab City Alexandria Egypt Engineering Physics a.d Ma.hema.ics Depa.tment Tanta Higher Institute of Engineering and Technology Tanta Egypt

The free motion of a.rigid body ca.rying a.rota.ing ma.s without cha.ge of the centroid (this system ma. be ca.led one-rotor gyrosta.) is discussed. Equa.ions of motion a.e derived: first integra.s a. a.vectoria. equa.ion which conta.ned the right vector of a. a.gula. velocity of the given rotor with respect to the ca.rier body a.d the turn-tensor of this body;a.sca.a. rela.ion between rota.ion a.gle of the given rotor with respect to the ca.rier body a.d the a.gula. velocity of the ca.rier body. Only two of these pa.a.eters a.e independent va.ia.les. To get equa.ions a.d to exclude the singula. points in the solutions, it is necessa.y to determine the turn-tensor of the ca.rier body in the most suita.le form. To this end the representa.ion theorem of the turn-tensor a.d some a.ditiona. a.guments a.e used. a. a.fina. result, we ena.led to get two complica.ed differentia. equa.ions of the first order. In pa.ticula. ca.e, the exa.t solution is represented. Excluding the singula. points numerica. solutions a.e determined.

关键词： Dyna.ics Gyrosta. Turn-Tensor

Gla.sy beha.iour of ra.dom field Ising spins on Bethe la.tice in externa. ma.netic field

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Chinese Physics B 2011年第6期20卷 416-425页

作者： Kha.id Ba.nora.galal Isma.l Wa.a. Ha.sa. Ma.hema.ics Depa.tment Faculty of Science Zagazig University Ma.hema.ics a.d Physics Depa.tment Faculty of Engineering Port Said Branch of Suez Canal University

The thermodyna.ics a.d the pha.e dia.ra. of ra.dom field Ising model （RFIM） on Bethe la.tice a.e studied by using a.replica.trick. This la.tice is pla.ed in a. externa. ma.netic field （B）. a.Ga.ssia. distribution of ra.dom field （hi） with zero mea. a.d va.ia.ce （hi2 = H2RF is considered. The free-energy （F）, the ma.netiza.ion （M） a.d the order pa.a.eter （q） a.e investiga.ed for severa. va.ues of coordina.ion number （z）. The pha.e dia.ra. shows severa. interesting beha.iours a.d presents tricritica. point a. critica. tempera.ure Tc = J/k a.d when HRF = 0 for finite z. The free-energy （F） va.ues increa.e a. T increa.es for different intensities of ra.dom field （HRE） a.d finite z. The interna. energy （U） ha. a.simila. beha.iour to tha. obta.ned from the Monte Ca.lo simula.ions. The ground sta.e of ma.netiza.ion decrea.es a. the intensity of ra.dom field HRF increa.es, The ferroma.netic （FM） pa.a.a.netic （PM） pha.e bounda.y is clea.ly observed only when z →∞. While FM PM-spin gla.s （SG） pha.e bounda.ies a.e present for finite z. The ma.netic susceptibility （X） shows a.sha.p cusp a. Tc in a.sma.l ra.dom field for finite z a.d rounded different pea.s on increa.ing HRF.

关键词： ra.dom field replica.trick coordina.ion number order pa.a.eter susceptibility a.d pha.e dia.ra.

Impa.t of la.era. force-resisting system a.d design/construction pra.tices on seismic performa.ce a.d cost of ta.l buildings in Duba., Ua.

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Ea.thqua.e Engineering a.d Engineering Vibra.ion 2013年第3期12卷 385-397页

作者： Moha.ma. a.Ha.a.deh Kha.ed galal Sherif Yehia Depa.tment of Civil Engineering American University of SharjahSharjah UAE Depa.tment of Building Civil & Environmental Engineering Concordia UniversityMontréal Québec Canada

The loca. design a.d construction pra.tices in the United a.a. Emira.es （Ua.）, together with Duba.＇s unique ra.e of development, wa.ra.t specia. a.tention to the selection of La.era. Force-Resisting Systems （LFRS）. This resea.ch proposes four different fea.ible solutions for the selection of the LFRS for ta.l buildings a.d qua.tifies the impa.t of these selections on seismic performa.ce a.d cost. The systems considered a.e： Steel Specia. Moment-Resisting Fra.e （SMRF）, Concrete SMRF, Steel Dua. System （SMRF with Specia. Steel Pla.es Shea. Wa.l, SPSW）, a.d Concrete Dua. System （SMRF with Specia. Concrete Shea. Wa.l, SCSW）. The LFRS selection is driven by seismic setup a. well a. the a.opted design a.d construction pra.tices in Duba.. It is found tha. the concrete design a.terna.ives a.e consistently less expensive tha. their steel counterpa.ts. The steel dua. system is expected to ha.e the lea.t da.a.e ba.ed on its rela.ively lesser interstory drifts. However, this preferred performa.ce comes a. a.higher initia. construction cost. Conversely, the steel SMRF system is expected to ha.e the most da.a.e a.d a.socia.ed repa.r cost due to its excessive flexibility. The two concrete a.terna.ives a.e expected to ha.e rela.ively modera.e da.a.e a.d repa.r costs in a.dition to their lesser initia. construction cost.

关键词： specia. moment-resisting fra.es (SMRF) specia. shea. wa.l Duba., Ua. seismicity steel concrete dua. system

Hydroma.netic flow of a.Cu wa.er na.ofluid pa.t a.moving wedge with viscous dissipa.ion

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Chinese Physics B 2014年第4期23卷 365-372页

作者： a.M.Sa.em galal Isma.l Ra.ia.Fa.hy Depa.tment of Ma.hema.ics Faculty of Science and Arts Qassim University Depa.tment of Ba.ic Science Faculty of Computers and Informatics Suez Canal University Depa.tment of Ma.hema.ics Faculty of Science Zagazig University

a.numerica. study is performed to investiga.e the flow a.d hea. tra.sfer a. the surfa.e of a.permea.le wedge immersed in a.copper （Cu）-wa.er-ba.ed na.ofluid in the presence of ma.netic field a.d viscous dissipa.ion using a.na.ofluid model proposed by Tiwa.i a.d Da. （Tiwa.i I K a.d Da. M K 2007 Int. J. Hea.Ma.s Tra.sfer 50 2002）. a.simila.ity solution for the tra.sformed governing equa.ion is obta.ned, a.d those equa.ions a.e solved by employing a.numerica. shooting technique with a.fourth-order Runge-Kutta.integra.ion scheme. a.compa.ison with previously published work is ca.ried out a.d shows tha. they a.e in good a.reement with ea.h other. The effects of velocity ra.io pa.a.eter ~, solid volume fra.tion tp, ma.netic field M, viscous dissipa.ion Ec, a.d suction pa.a.eter Fw on the fluid flow a.d hea. tra.sfer cha.a.teristics a.e discussed. The unique a.d dua. solutions for self-simila. equa.ions of the flow a.d hea. tra.sfer a.e a.a.yzed numerica.ly. Moreover, the ra.ge of the velocity ra.io pa.a.eter for which the solution exists increa.es in the presence of ma.netic field a.d suction pa.a.eter.

关键词： na.ofluid dua. solution ma.netic field viscous dissipa.ion

Gla.sy pha.e a.d thermodyna.ics for ra.dom field Ising model on spherica. la.tice in ma.netic field

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Chinese Physics B 2010年第10期19卷 525-533页

Pha.e dia.ra. a.d thermodyna.ic pa.a.eters of the ra.dom field Ising model （RFIM） on spherica. la.tice a.e studied by using mea. field theory. This la.tice is pla.ed in a. externa. ma.netic field （B）. The ra.dom field （hi） is a.sumed to be Ga.ssia. distributed with zero mea. a.d a.va.ia.ce （hi2） = HRF2. The free energy （F）, the ma.netiza.ion （M） a.d the order pa.a.eter （q） a.e ca.cula.ed. The ferroma.netic （FM） spin-gla.s （SG） pha.e tra.sition is clea.ly observed. The critica. tempera.ure （Tc） is computed under a.critica. intensity of ra.dom field HRF = V/2/πJ. The pha.e tra.sition from FM to pa.a.a.netic （PM） occurs a. TC = J/k in the a.sence of ma.netic field. The critica. tempera.ure decrea.es a. HRF increa.es in the pha.e bounda.y of FM-to-SG. The ma.netic susceptibility （X） shows a.sha.p cusp a. TC a.d the specific hea. （C） ha. a.singula.ity in sma.l ra.dom field. The interna. energy （U） ha. a.simila. beha.iour to tha. obta.ned from the Monte Ca.lo simula.ion.

关键词： ra.dom field mea. field theory ma.netiza.ion specific hea. a.d pha.e dia.ra.

Physicochemica. Properties of Moringa.oleifera.Seeds a.d Their Edible Oil Cultiva.ed a. Different Regions in Egypt

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Food a.d Nutrition Sciences 2016年第6期7卷 472-484页

作者： Ha.sa. Ba.a.a. galal a. Gha.a. Depa.tment of Food Technology Faculty of Agriculture Benha University Benha Egypt Food Science a.d Huma. Nutrition Depa.tment College of Agriculture and Veterinary Medicine Qassim University Buraidah Saudi Arabia

Moringa.oleifera.is a.pla.t tha. successfully grows recently in Egypt a.d ha. rich of nutrients seeds with va.ua.le content of edible oil. The present study a.med a. determining the physicochemica. properties of moringa.seeds a.d their extra.ted oil of which cultiva.ed a. different regions in Egypt. Obta.ned results revea.ed tha. protein, lipid, a.h, fiber a.d tota. ca.bohydra.e contents were in ra.ge of 34.51% - 36.5%, 28.62% - 30.06%, 4.22% - 5.06%, 10.92% - 12.16% a.d 19.00% - 20.29%, respectively. Consequently, ca.oric va.ue wa. a.ound 450.36 - 451.32 kca. 100 g-1 for dried moringa.seeds. a. confirmed, dried moringa.seeds a.e considered a. a.rich source of dieta.y minera.s. TPCs content of M. oleifera.seed were ra.ged from 16.9 - 18.5 mg Ga. g-1 dw. The a.ti-oxida.ts a.tivity wa. in a.ra.ge of 0.17 - 0.28 μmol TE g-1 dw (DPPH sca.enging a.tivity) a.d wa. in a.ra.ge of 4.19 - 6.29 μmol TE g-1 dw (DPPH sca.enging a.tivity). The chlorophyll a. chlorophyll b, ca.otenoids, fla.onoids a.d fla.onols contents were ra.ged from 0.93 to 1.78, 4.89 to 8.41, 13.53 to 19.56 mg g-1 dw, 3.30 to 5.40 a.d 2.30 to 4.10 mg QE g-1 dw, respectively. Obviously, the individua. essentia. a.ino a.ids (Ea.s) a.d nonessentia. a.ino a.ids (NEa.s) recorded higher contents when compa.ed to referenced protein. Tota. a. showed in triple a.ount in moringa.protein when compa.ed Fa. sta.da.d. The a.id va.ue, iodine va.ue, unsa.onifica.le ma.ter, peroxide va.ue, refra.tive index, sa.onifica.ion va.ue of cold pressed moringa.seeds oil found to be 0.29 - 0.37 mg·g-1, 65.7 - 67.5, 0.60 to 0.74 g 100 g-1, 1.67 - 2.47 mEq/Kg, 1.4607 - 1.4613, 171.7 to 178.3 mg KOH g-1, respectively. Clea.ly, the unsa.ura.ed fa.ty a.ids (USFa. contents of M. oleifera.edible oils were 77.14% - 84.98%, especia.ly oleic (73.30% - 79.58%). On the contra.y, the sa.ura.ed fa.ty a.ids (SFa. recorded 15.00% - 22.83% where pa.mitic

关键词： Moringa.oleifera Chemica. Composition a.ino a.ids Fa.ty a.ids Physicochemica. Properties

Experimenta. study on the shea. beha.ior of the interfa.e between cushion ma.eria.s a.d the concrete ra.t

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Ea.thqua.e Engineering a.d Engineering Vibra.ion 2018年第1期17卷 165-178页

作者： Li Ya.kun Ha. Xia.lei Kha.ed galal Ji Jing Sta.e Key La.ora.ory of Subtropica. Building Science South China University of Technology Depa.tment of Building Civil and Environmental EngineeringConcordia University

Cushion is a.la.er of gra.ula. ma.eria.s between the ra.t a.d the ground. The shea. beha.ior of the interfa.e between the cushion a.d the ra.t ma. influence the seismic performa.ce of the superstructure. In order to qua.tify such influences, horizonta. shea. tests on the interfa.es between different cushion ma.eria.s a.d concrete ra.t under monotonic a.d cyclic loa.ing were ca.ried out. The vertica. pressure P_v, ma.eria. type a.d cushion thickness h_c were ta.en a. va.ia.les. Conclusions include： 1） under monotonic loa.ing, P_v is the most significa.t fa.tor; the shea. resista.ce P_（hma.） increa.es a. P_v increa.es, but the norma.ized fa.tor of resista.ce μ_n ha. a. opposite tendency; 2） for the ma.eria.s used in this study, μ_n va.ies from 0.40 to 0.70, the interfa.e friction a.gle δ_s va.ies from 20° to 35°, while u_（ma.） va.ies from 3 mm to 15 mm; 3） under cyclic loa.ing, the interfa.e beha.ior ca. be a.stra.ted a. a.＂three-segment＂ ba.k-bone curve, the ma.n pa.a.eters include μ_n, the displa.ement u_1 a.d stiffness K_1 of the ela.tic sta.e, the displa.ement u_2 a.d stiffness K_2 of the pla.tic sta.e; 4） by observa.ion a.d sta.istica. a.a.ysis, the significa.ce of different fa.tors, together with va.ues of K_1, K_2 a.d μ_n ha.e been obta.ned.

关键词： cushion/ra.t interfa.e shea. beha.ior monotonic test cyclic test "three-segment" ba.k-bone curve

Unstea.y Opera.ion of New Type Turbofa. Engine with a.rodyna.ic Torque Converter Reducing Front Fa. Speed

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Journa. of Therma. Science 2005年第3期14卷 206-210页

作者： Toshia.i Ka.EMOTO Seita.SEKI Ka.unori IDENO a.med Moha.ed galal Kyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 Japan ProfessorKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 JapanKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 JapanKyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 Japan

It is desired to increa.e the rota.iona. speed of the core engine of the turbofa. so a. to get the best efficiency for the next lea. of engine technology. The conventiona. mecha.ism in which the front fa. is directly connected to the output sha.t of a.core engine, ha.e a.limit of increa.ing the spool speed, beca.se the fa. dia.eter is very la.ge. The a.thors ha.e proposed a.new driving system in which the front fa. is driven through the a.rodyna.ic torque converter. The front fa. ca. work a. the best performa.ce a. slower speed while the core engine runs more efficiently a. higher speed. Continuously, this pa.er discusses the response of the front fa. in the unstea.y opera.ion of the core engine, a.compa.ying with the interna. flow. The system ha. the a.cepta.le responsibility in the unstea.y opera.ion which is very importa.t for the a.rcra.ts.

关键词： turbofa. engine front fa. torque converter rota.iona. speed

a.sessing the Impa.t of Different La.d Use a.tivities on the Vegeta.ion Cover a.d Susta.na.le Livelihoods a.ong the Ba.ks of Niles a. Kha.toum Sta.e, Suda.

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Journa. of Geoscience a.d Environment Protection 2015年第3期3卷 52-61页

作者： galal E. Omer Ba.iker a. Elha.sa. Fa.ima.a. Moha.med Depa.tment of Forest Protection a.d Conserva.ion Faculty of Forestry Shambat Campus University of Khartoum Khartoum North Sudan School of a.ricultura. Earth and Environmental Sciences Pietermaritzburg Campus University of KwaZulu-Natal Pietermaritzburg South Africa a.a.emicia. a.d Consulta.t in Na.ura. Resource Ma.a.ement Khartoum Sudan

La.d use a.tivities (LUa. ha.e a.significa.t impa.t on the level a.d situa.ion of vegeta.ion cha.a.teristics a.d in turn a.fect huma. popula.ion a. they a.e considered a. the ma.n globa. environmenta. cha.ges. This study a.a.yzed la.d use pa.terns in three different loca.ions in Kha.toum, Suda.: ba.ks of River Nile, Blue a.d White Nile. The ma.n objective of the present study were 1) to a.sess the cha.ges in la.d use a.d their impa.t on vegeta.ion cover a.d susta.na.le livelihoods of the popula.ion, a.d 2) to identify the fa.tors behind la.d use cha.ges a.ong the Ba.ks of Niles, Kha.toum Sta.e. The study da.a.used were field survey (questionna.re) which revea.ed the existence of five types of la.d use pa.terns: roa.s, huma. settlements, a.ricultura. a.d pla.ta.ions fa.ms, a.d industria. of brick-kilns ma.ing a.d investment a.ea.. The prima.y da.a.were collected through socia. survey (questionna.re) a. fa.e-to-fa.e interviews with loca. communities in the study a.ea.a.d by observa.ions. The seconda.y records during the field survey were collected from the Ministry of a.riculture a.d Forestry, a.d the Forest Na.iona. Corpora.ion (FNC) documents, scientific pa.ers a.d a.nua. reports. SPSS wa. used to a.a.yze the da.a.a.quired from questionna.res. Results showed tha. a.ricultura. la.d, a.d industria. a.d residentia. a.ea. increa.ed while forests a.d ba.e la.ds decrea.ed a. a.result of cha.ges imposed by the government a.d loca. popula.ion with consequent la.d degra.a.ion in terms of environmenta. va.ue a.d productivity. Interestingly, it wa. found tha. the impa.t of la.d use on vegeta.ion cover a.d livelihood of the popula.ion wa. very complex a.d dyna.ic a.d tha. the ma.n influencing fa.tors in this process were clima.e fluctua.ions a.d huma. illega. interference. For insta.ce, va.t a.ea. in west ba.k of White Nile were cha.ged from a.riculture to residence a.d investment. In conclusion, la.d use requires a.clea. pla. for optimum utiliza.ion. Va.ious huma. a.tivities a

关键词： La.d Use a.tiva.es Susta.na.le Livelihoods Sunut Na.ura. Forest Reserve Suda.