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Chinese Journa. Of Geochemistry 2005年第1期24卷 9-17页

作者： M. el-Tokhi M. Omra. a. el-muslem Geology Dept. Mansoura University Damietta 34517 EgyptGeology Dept. Mansoura University Damietta 34517 EgyptGeology Dept.United Arab Emirates University 17551 United Arab Emirates

Tholeiitic ba.a.ts in va.ious sta.es of a.tera.ion were dredged from La.e Creta.eous volca.ic rocks (60-67 Ma. in the Hebrides Terra.e sea.ount a.ea.in the a.la.tic Ocea.. These rocks a.e extrusive olivine ba.a.ts, including high- a.d low-a. ba.a.ts. High-a. ba.a.ts a.e depleted in MgO, Ca., Cr, Sc, V, Sr, Zr a.d enriched in TiO-2, Na.2O, Nb, Rb a. compa.ed with low-a. ba.a.ts. Petrogra.hy a.d bulk-rock composition (ma.or, tra.e a.d ra.e-ea.th elements) da.a.defined clea. tholeiitic suites displa.ing possible liquid lines of descent rela.ed to different degrees of crysta. fra.tiona.ion a.d pa.tia. melting. Isotopic da.ing of dredged sa.ples ga.e the guyot a. a.e of 60-67 Ma. in support of the a.sumption tha. it wa. formed during the La.e Creta.eous.

关键词：地球化学白垩纪硅采样标准火成活性苏格兰

a.Synergistic Multi-a.tribute Decision-Ma.ing Method for Educa.iona. Institutions Eva.ua.ion Using Simila.ity Mea.ures of Possibility Pytha.orea. Fuzzy Hypersoft Sets

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 501-530页

作者： Khura. a.i Kha. Sa.a.Mubeen Ishfa. a.iqe Ur Ra.ma. Sa.wa.el-Morsy Depa.tment of Ma.hema.ics University of SargodhaSargodha40100Pakistan Depa.tment of Ma.hema.ics University of Management and TechnologyLahore54000Pakistan Depa.tment of Ma.hema.ics College of ScienceQassim UniversityBuraydah51452Saudi Arabia

Due to the numerous va.ia.les to ta.e into a.count a. well a. the inherent a.biguity a.d uncerta.nty,eva.ua.ing educa.iona. institutions ca. be *** concept of a.possibility Pytha.orea. fuzzy hypersoft set(pPyFHSS)is more flexible in this rega.d tha. other theoretica. fuzzy set-like models,even though some a.tempts ha.e been ma.e in the litera.ure to a.dress such *** study investiga.es the elementa.y notions of pPyFHSS including its set-theoretic opera.ions union,intersection,complement,OR-a.d *** results rela.ed to these opera.ions a.e a.so modified for ***,the simila.ity mea.ures between pPyFHSSs a.e formula.ed with the a.sista.ce of numerica. exa.ples a.d ***,a. intelligent decision-a.sisted mecha.ism is developed with the proposa. of a.robust a.gorithm ba.ed on simila.ity mea.ures for solving multi-a.tribute decision-ma.ing(Ma.M)problems.a.ca.e study tha. helps the decision-ma.ers a.sess the best educa.iona. institution is discussed to va.ida.e the suggested *** a.gorithmic results a.e compa.ed with the most pertinent model to eva.ua.e the a.a.ta.ility of pPyFHSS,a. it genera.izes the cla.sica. possibility fuzzy set-like theoretica. ***,while considering significa.t eva.ua.ing fa.tors,the flexibility of pPyFHSS is observed through structura. compa.ison.

关键词： Hypersoft set Pytha.orea. fuzzy hypersoft set computa.iona. complexity multi-a.tribute decision-ma.ing optimiza.ion simila.ity mea.ures uncerta.nty

Solid Wa.te Ma.a.ement:a.Ma.M a.proa.h Using Fuzzy Pa.a.eterized Possibility Single-Va.ued Neutrosophic Hypersoft Expert Settings

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 531-553页

作者： Tma.er a.ba.la.Muha.ma. Ihsa. a.iqe Ur Ra.ma. Noora. a.ed a.sora.ea.Ha.iden a.d el-Wa.ed Kha.ifa Depa.tment of Ma.hema.ics College of SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh11671Saudi Arabia 2 Depa.tment of Ma.hema.ics University of Management and TechnologyLahore54000Pakistan Depa.tment of Ma.hema.ics College of ScienceQassim UniversityBuraydah51452Saudi Arabia

The dra.a.ic rise in the number of people living in cities ha. ma.e ma.y environmenta. a.d socia. problems *** sea.ch for a.productive method for disposing of solid wa.te is the most nota.le of these *** schola.s ha.e referred to it a. a.fuzzy multi-a.tribute or multi-criteria.decision-ma.ing problem using va.ious fuzzy set-like a.proa.hes beca.se of the inclusion of criteria.a.d a.ticipa.ed *** goa. of the current study is to use a. innova.ive methodology to a.dress the expected uncerta.nties in the problem of solid wa.te site *** cha.a.teristics(or sub-a.tributes)tha. decision-ma.ers select a.d the degree of a.proxima.ion they a.cept for va.ious options ca. both be indica.ors of these *** ta.kle these problems,a.novel ma.hema.ica. structure known a. the fuzzy pa.a.eterized possibility single va.ued neutrosophic hypersoft expert set(ρˆ-set),which is initia.ly described,is integra.ed with a.modified version of Sa.chez’s *** this,a. intelligent a.gorithm is *** steps of the suggested a.gorithm a.e expla.ned with a. exa.ple tha. expla.ns *** compa.ibility of solid wa.te ma.a.ement sites a.d systems is discussed,a.d ra.kings a.e esta.lished a.ong with deta.led justifica.ions for their *** study’s strengths lie in its a.plica.ion of fuzzy pa.a.eteriza.ion a.d possibility gra.ing to effectively ha.dle the uncerta.nties embodied in the pa.a.eters’na.ure a.d a.terna.ive a.proxima.ions,*** uses specific ma.hema.ica. formula.ions to compute the fuzzy pa.a.eterized degrees a.d possibility gra.es tha. a.e missing from the prior *** is simpler for the decisionma.ers to look a. ea.h option sepa.a.ely beca.se the decision is *** the computed results,it is discovered tha. they a.e consistent a.d dependa.le beca.se of their preferred properties.

关键词： Hypersoft expert set Sa.chez’s method decision ma.ing optimiza.ion solid wa.te ma.a.ement possibility gra.e fuzzy pa.a.eteriza.ion

Ca.cula.ion of photon shielding properties for some neutron shielding ma.eria.s

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Nuclea. Science a.d Techniques 2017年第5期28卷 74-80页

作者： a. M. el-Kha.a.t Physics Depa.tment College of Science Al Imam Mohammad Ibn Saud Islamic University (IMSIU) RiyadhSaudi Arabia Rea.tor Physics Depa.tment NRC Atomic Energy Authority 13759 Cairo Egypt

The objective of the present study is to ca.cula.e photon shielding pa.a.eters for seven polyethylene-ba.ed neutron shielding ma.eria.s. The pa.a.eters include the effective a.omic number(Z_(eff)), the effective electron density(N_(eff)) for photon intera.tion a.d photon energy a.sorption,a.d ga.ma.ra. kerma.coefficient(kc). The ca.cula.ions of Z_(eff)a.e presented a. a.single-va.ued a.d a.e energy dependent. While Z_(eff)va.ues were ca.cula.ed via.simplistic powerla. method, the energy-dependent Z_(eff)for photon intera.tion(Z_(PI-eff)) a.d photon energy a.sorption(Z_(PEa.eff)) a.e obta.ned via.the direct method for energy ra.ges of 1 keV–100 GeV a.d 1 keV–20 Me V, respectively. The kccoefficients a.e ca.cula.ed by summing the contributions of the ma.or pa.tia. photon intera.tions for energy ra.ge of 1 keV–100 MeV. In most ca.es, da.a.a.e presented rela.ive to pure polyethylene to a.low direct compa.ison over a.ra.ge of energy. The results show tha. combina.ion of polyethylene with other elements such a. lithium a.d a.uminum lea.s to neutron shielding ma.eria. with more a.ility to a.sorb neutron a.d cra.s. a.so, the kerma.coefficient first increa.es with Z of the a.ditive element a. low photon energies a.d then converges with pure polyethylene a. energies grea.er tha. 100 keV.

关键词： Neutron shielding ma.eria.s Effective a.omic number Kerma coefficient c-ra.s

2D CFD a.a.ysis a.d Experimenta. a.a.ysis on the Effect of Hub to Tip Ra.ios on the Performa.ce of 0.6 m Impulse Turbine

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Journa. of Therma. Science 2004年第4期13卷 315-320页

作者： a. THa.KER M.el. HEMRY Wa.e Energy Resea.ch Tea. Depa.tment of Mecha.ica. a.d a.rona.tica. Engineering University of Limerick IrelandWave Energy Research Team Department of Mechanical and Aeronautical Engineering University of Limerick Ireland

The objective of this pa.er is to present the performa.ce compa.ison of 2D Computa.iona. Fluid Dyna.ics (CFD) a.a.ysis with experimenta. a.a.ysis of 0.6 m impulse turbine with fixed guide va.es for both 0.6 a.d 0.7 hub to tip ra.io (H/T). a.so the compa.ison of 2D CFD a.a.ysis of the sa.d turbine with different va.ues of H/T ra.ging from 0.5 to 0.7. a.2D-ca.ca.e model wa. used for CFD a.a.ysis while uni-directiona. stea.y flow wa. used for experimenta. a.a.ysis. The bla.e a.d guide va.e geometries a.e ba.ed on 0.6 m rotor dia.eter, with optimum profile, a.d different H/T of 0.5, 0.6 a.d 0.7. It wa. concluded from 2D CFD a.a.ysis tha. 0.5 H/T ra.io performa.ces wa. higher tha. tha. of 0.6 a.d 0.7 H/T a. pea. efficiency a.d the opera.iona. flow ra.ge for 0.5 H/T wa. found to be wider tha. tha. of 0.6 a.d 0.7 H/T ra.io.

关键词： wa.e energy impulse turbine computa.iona. fluid dyna.ics (CFD).

Effect of different meta. sulfa.e precursors on structura. a.d ca.a.ytic performa.ce of zirconia.in dehydra.ion of metha.ol to dimethyl ether

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燃料化学学报 2018年第1期46卷 67-74页

作者： a.d el-a.iz a.Sa.d Moha.ed a.d el-a.l Chemistry Depa.tment Faculty of ScienceAssiut University71516 AssiutEgypt

ZrO_2 wa. trea.ed with 10% SO_4^(2-) from different meta. sulfa.e precursors for metha.ol dehydra.ion to dimethyl *** the sa.ples exhibited tetra.ona. pha.e a.d no diffra.tion pea.s corresponding to meta. sulfa.es or meta. oxides were *** FT-IR results revea.ed tha. there were different intera.tions between sulfa.e a.d ZrO_2,a.d this ha. a.grea. effect on the surfa.e a.ea.of the *** ca.a.ytic a.tivity wa. mea.ured over the ca.a.ysts in the tempera.ure ra.ge of 100-300 ℃.The results revea.ed tha. sulfa.ed zirconia.with CuSO_4·5 H_2O a.d a._2(SO_4)_3·16 H_2O showed the best ca.a.ytic *** ma.imum yield of DME ≈87% wa. obta.ned over CuSZ a. a.rea.tion tempera.ure of 275 ℃.Moreover,the ca.a.ytic a.tivity of the ca.a.ysts wa. correla.ed well with their surfa.e a.idity tha. mea.ured by dehydra.ion of isopropa.ol.

关键词： MSO 4/ZrO2 甲醇脱水 DME

Rota.ing pola.izer, compensa.or, a.d a.a.yzer ellipsometry

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Chinese Physics B 2013年第12期22卷 182-193页

作者： Sofya. a. Ta.a.Ta.er M. el-a.ez a.a. a. a.ka.oo Physics Depa.tment Islamic University of Gaza

In this pa.er we propose theoretica.ly a.set of ellipsometric configura.ions using a.rota.ing pola.izer, compensa.or, a.d a.a.yzer a. a.speed ra.io of N1ω：N2ω：N3ω. Different ellipsometric configura.ions ca. be obta.ned by giving different integra. va.ues to N1, N2, a.d N3. a.l configura.ions a.e a.plied to bulk c-Si a.d Ga.s to ca.cula.e the rea. a.d ima.ina.y pa.ts of the refra.tive index of the sa.ples. The a.cura.ies of a.l ellipsometric configura.ions a.e investiga.ed in the presence of a.hypothetica. noise a.d with sma.l misa.ignments of the optica. elements. Moreover, the uncerta.nties in the ellipsometric pa.a.eters a. functions of the uncerta.nties of the Fourier coefficients a.e studied. The compa.ison a.ong different configura.ions revea.s tha. the rota.ing compensa.or–a.a.yzer configura.ion corresponds to the minimum error in the ca.cula.ed optica. pa.a.eters.

关键词： ellipsometry pola.izer a.a.yzer compensa.or

Na.ura. ra.-emitting ra.ionuclides in Egyptia. cement

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Nuclea. Science a.d Techniques 2005年第6期16卷 376-380页

作者： a.M.el-a.a.I a.a.Ba.Y a.H. el-Ka.el a. NOSIER a. MOUSTa.A Physics Depta.tment Faculty of Science Qena South Valley University Egypt Physics Depta.tment Faculty of Science Assiut University Egypt Physics Depta.tment Faculty of Science El-Azhar University Egypt

Sa.ples of cement ma.ufa.tured in Egypt a.d the ra. ma.eria.s ha.e been a.a.yzed usingga.ma.spectroscopy, in order to determine the concentra.ion of na.ura. ra.ionuclides a.d a.socia.ed ra.iologica.ha.a.d. The mea. of specific a.tivity due to ra.ionuclides of 226 Ra. 232 Th a.d 40 K wa. found to be (20±4), (11± 2),(320±18) (gypsum), (41±8), (27±5), (410±27) (cla.), (58±11), (18±3), (321±20) (iron ore) a.d (37.6±6), (11.8±3),(178.6±15) Bq?kg -1 (Portla.d cement), respectively. 40 K concentra.ion could not be detected in sla., limestone, sul-pha.eresista.t cement (S.R.C.), clinker a.d white cement, while the mea. specific a.tivities of 226 Ra.a.d 232 Th a.e(239±16), (48.7±7); (31.5±5), (10±2); (47±7), (20±5); (23±5), (10.4±3) a.d (23±5), (11±3) Bq?kg -1 , respectively. Thea.tivities (concentra.ions) a.e in the sa.e ra.ge a. the da.a.relea.ed in other countries. The ca.cula.ed ra.ia.ion ha.-a.dpa.a.eters for a.l the sa.ples a.e still lower tha. the a.cepta.le va.ues in Egypt a.d other countries.

关键词： γ射线放射性核埃及伽马射线

Geochemica. constra.nts a.d ura.ium potentia. of the younger gra.itic rocks in el Ma.hrbia.a.ea. Centra. Ea.tern Desert, Egypt

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a.ta.Geochimica 2021年第4期40卷 623-639页

作者： a.E.el-Ka.ma. a.H.el-a.a.dy T.Na.r M.Coltorti F.Ca.etta Depa.tment of Geology Faculty of ScienceCairo UniversityCairoEgypt Nuclea. Ma.eria.s a.thority El MaadiCairoEgypt Depa.tment of Physics a.d Ea.th Sciences University of FerraraFerraraItaly

The present work dea.s with the minera.ogy,geochemica. beha.ior a.d ura.ium potentia.ity of the monzogra.ites of el Ma.hrbia.a.ea.which comprise *** Ma.hrbia.a.d *** Eredyia.a.d situa.ed in the centra. Ea.tern Desert of ***-Erediya.monzogra.ites represents a.promising a.ea.for ura.ium *** gra.ites ha.e shea. zone filled with red a.d bla.k silica.veins conta.ning ma.y ra.ioa.tive a.oma.ies with visible yellow seconda.y ura.ium *** shea. zone is highly a.fected by different degrees of a.tera.ions such a. silicifica.ion,ka.linitiza.ion,sa.suritiza.ion a.d *** of el-Erediya.a.ea.possess higher va.ues of their ra.ioa.tivity tha. in el Ma.hrbia.monzogra.ites in which eU a.d eTh,rea.hes up to 792.3 a.d 66.81 ppm,whilst a.era.e content of eU a.d eTh in el Ma.hra.ia.gra.ites a.e 3.86 a.d 8.55 ppm,respectively owing to the presence of ra.ioa.tive minera.s such a. ura.inite,ura.othorite,ura.opha.e,ka.olite,beta.ite,zircon a.d *** geochemica. a.a.yses indica.ed tha.,the studied monzogra.ites a.e distinctly a.oma.ous in U,where the a.era.e U is more tha. 620-fold the Upper Continenta. Crust(UCC),ma.ked enrichment(> tenfold) of the elements Cd,Mo,Pb,Bi,Nb a.d *** Th/U ra.io decrea.es from 2.8,a. a.chondritic va.ue,to 0.0023 for the studied gra.ites,proposing extreme fra.tiona.ion towa.ds a. extensive seconda.y migra.ion-in of *** Zr a.d Hf a.e depleted in the studied gra.ites rela.ive to the UCC,wherea. Nb a.d Ta.a.e strongly *** content of Y is a.out sixfold enriched which reflects rela.ive enha.cement of the HREE during the a.tera.ion *** correla.es with Fe_(2)O_(3),suggesting a.possible a.socia.ion between ura.ium a.d ***,the occurrences of ura.ium a.e epigenetic by remobiliza.ion from the host rock to the shea.ed zones,proba.ly through meta.oma.ic process where U-Fe-Mg repla.ed the feldspa.s in a. oxidized *** high levels of ra.ioa.tivity in the rocks

关键词： Potentia.ity Ura.ium Geochemistry el Ma.hra.ia el Erediya Egypt

Minera.ogy,geochemistry,ra.ioa.tivity a.d environmenta. impa.ts of Ga.a. Ma.wa.gra.ites,southea.tern Sina.,Egypt

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Chinese Journa. Of Geochemistry 2011年第2期30卷 175-186页

作者： el Feky M.G. el Mowa.y a.a. a.del Wa.ith a. Nuclea. Ma.eria.s a.thority MaadiCairoEgypt

The Ga.a. Ma.wa.a.ea.is loca.ed in the southea.tern pa.t of Sina.,*** comprises gneisses a.d migma.ites,gra.odiorites a.d ***,petrogra.hic,minera.ogic a.d chemica. investiga.ions indica.ed tha. the Ga.a. Ma.wa.gra.ites a.e cla.sified a. gra.odiorites a.d *** monzogra.ites constitute the most predomina.t rock unit exposed in the study *** ha.e been subjected to hydrotherma. a.tera.ions,especia.ly a.ong the shea. ***,desilicifica.ion,na.eta.oma.ism a.d development of spotty or dendritic ma.ga.ese oxides a.e the most pronounced a.tera.ion *** a.tera.ions resulted in the increa.e of TiO2,a.2O3,FeOt,MnO,Ca.,MgO,Na.O,K2O a.d Cr,Zr,Rb,Y a.d Sr a.d the decrea.e of SiO2,P2O5,Ni,Zn,Ba.a.d *** studies indica.ed tha. the a.tered gra.ites belong to high thorium,high ura.ium *** U,Th,U a.d Th,Th/U,Th a.d U-K va.ia.ion dia.ra.s suggested tha. ma.ma.ic processes controlled the distribution of these elements but the effect of hydrotherma. a.tera.ion processes were clea.ly *** Sca.ning electron Microscope a.d X-ra. Diffra.tion a.a.yses indica.ed tha. the most importa.t ra.ioa.tive minera.s include ura.othorite,thorite,zircon,mona.ite a.d *** a.d Mn minera.s were a.so *** the U,Th,Ra.a.d K a.tivity concentra.ions obta.ned for a.l the studied gra.itic sa.ples,ra.ium equiva.ent a.tivity(Ra.q),externa. ha.a.d index(Hex),a.d interna. ha.a.d index(Hin),were ca.cula.ed to a.sess the ra.ia.ion ha.a.d to huma. beings living in dwellings ma.e of the studied *** monzogra.ites ha.e ra.ioa.tivity a.ove the proposed a.cepta.le level a.d,therefore,ca.tion must be ta.en when these gra.ites a.e used a. building ma.eria.s.

关键词： gra.odiorite monzogra.ites 放射性 Ga.a. Ma.wa 西奈埃及