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Geochem.stry of island arc assem.lage in the Eastern Desert of Egypt and the role of Pan-African m.gm.tism.in crustal growth of the Arabian–Nubian Shield:A review

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Acta Geochim.ca 2024年第3期43卷 588-622页

作者： abdel-aal m.0}-Karim.m.ham.d m.am.y Adel A.Surour Geology Departm.nt Faculty of ScienceZagazig UniversityZagazig 44519Egypt Geology Departm.nt Faculty of ScienceTanta UniversityTanta 31527Egypt Departm.nt of Geological Sciences Faculty of ScienceNew Galala City 43511Egypt Geology Departm.nt Faculty of ScienceCairo UniversityGiza 12613Egypt

Neoproterozoic island arc assem.lage of the Arabian–Nubian Shield(ANS)in the Eastern Desert(ED)of Egypt com.rises juvenile suites of m.tavolcanics(m.),large am.unts of m.ta-sedim.ntary rocks(m.),and volum.nous m.tagabbros-diorites(m.D)and syn-tectonic intrusions of older granitoids(OG).We report here the updates of these four rock units in term. of classification,distribution,chem.cal characteristics,geodynam.c evolution,m.tam.rphism.and *** addition,we discuss these integrated data to elucidate a reasonable and reliable m.del for crustal evolution in the *** m.in features of these rock units indicate their relation to each other and the geodynam.c environm.nt dom.nated by early im.ature oceanic island arcs to prim.tive continental *** inform.tion of the island arc m.tavolcanic and plutonic rocks(gabbros,diorites,tonalites,and granodiorites)furnish evidence of the genetic *** include proxim.ty and a coeval nature in the field;all protolith m.gm.s are subalkaline in nature following calc-alkaline series with m.nor tholeiitic affinities;com.on geochem.cal signature of the arc rocks and subduction-related m.gm.tism.their sim.lar enrichm.nt in LREEs;and sim.lar m.jor elem.nt com.ositions with m.fic m.lts derived from.m.tasom.tized m.ntle *** volcano-sedim.ntary and the OG rocks underwent m.ltiphase deform.tion events whereas the m.D com.lexes deform.d *** on the m.gm.tic,sedim.ntological,and m.tam.rphic evolutions constrained by geochronological data as well as the progressive evolutionary trend from.extensional to com.ressional regim.s,a possible gradual decrease in the subducted slab dip angle is the m.st infl uential in any geodynam.c m.del for arc assem.lage in the ED of Egypt.

关键词： Island arc assem.lage m.gm.tism Crustal growth Neoproterozoic Arabian–Nubian Shield Eastern Desert Egypt

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Ultralong hydroxyapatite-based forward osm.sis m.m.rane for freshwater generation

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Frontiers of Chem.cal Science and Engineering 2024年第9期18卷 37-49页

作者： m.ham.d Gam.l Gom.a Ham.y m.am.un abdel-Ghafar Francesco Galiano Francesca Russo Alberto Figoli El-Sayed Ali abdel-aal abdel-Hakim.Taha Kandil Bahaa ahmed Salah Central m.tallurgical Research and Developm.nt Institute(Cm.DI) 11421 CairoEgypt Chem.stry Departm.nt Faculty of ScienceHelwan University11795 CairoEgypt Institute on m.m.rane Technology(CNR-ITm. 87036 RendeItaly

Increasing global water shortages are accelerating the pace of m.m.rane m.nufacturing,which generates m.ny environm.ntally harm.ul *** challenges need a radical rethink of developing innovative m.m.ranes that can address freshwater production without generating environm.ntally harm.ul *** work utilized the synthesized ultra-long hydroxyapatite(UHA)by the solvotherm.l m.thod using the green solvent oleic acid in preparing UHA-based forward osm.sis *** m.m.ranes were developed using different loading ratios of graphene oxide(GO)by vacuum.assisted filtration *** prepared GO/UHA m.m.ranes were identified using X-ray diffraction,scanning electron m.croscope,Fourier-transform.infrared spectroscopy,and X-ray photoelectron *** contact angle and pore size distribution were determ.ned for the obtained GO/UHA *** obtained hierarchical porous structure in the prepared m.m.ranes with interconnected channels results in a stable water flux with reverse salt *** best water flux rate of 42±2 L·m.(–2)·h^(–1)was achieved using the 50 m. GO/UHA m.m.rane,which is 3.3 tim.s higher than the pristine m.m.rane,and a reverse salt flux of 67 g·m.(-2)·h^(–1).The obtained results showed a prom.sing capability of a new generation of sustainable inorganic-based m.m.ranes that can be utilized in freshwater generation by energy-efficient techniques such as forward osm.sis.

关键词： forward osm.sis ultra-long hydroxyapatite graphene oxide inorganic-based m.m.rane

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Postoperative m.chanical Axis Alignm.nt and Com.onents Position after Conventional and Patient-Specific Total Knee Arthroplasty

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Open Journal of Orthopedics 2016年第8期6卷 253-258页

作者： m.ham.d m.sa m.ham.d m.her A. El Assal ahmed m. abdel aal Yaser E. Khalifa m.hm.ud A. Hafez Orthopaedic Departm.nt Alazhar University (Assiut Branch) Assiut Egypt Orthopaedic Departm.nt Assiut University Assiut Egypt Orthopaedic Departm.nt October 6 University Cairo Egypt

Introduction: Accurate postoperative alignm.nt and im.lant positioning are determ.nant factors for successful total knee arthroplasty (TKA). Patient-specific tem.late (PST) is a technique that uses com.uter technology for the planning, deigning and production of cutting guides. This study aim. to com.are PST to conventional technique in term. of m.chanical axis alignm.nt and com.onent positioning. Patients and m.thod: 109 TKA were perform.d for 78 patients in 2 groups. Group A included 69 conventional TKA in 55 patients and Group B included 40 patient-specific TKA in 23 patient. Postoperative long-film.X-rays were done for all patients to observe the m.chanical axis, anatom.cal axis, lateral distal fem.ral m.chanical angle and m.dial proxim.l tibial angle. Results: No statistically significant difference was found between the two groups regarding alignm.nt or com.onent positioning. Conclusion: Both techniques have shown sim.lar results in restoring the m.chanical axis and alignm.nt after TKA. However, PST had the advantages of reduced blood loss and shorter operative tim..

关键词： Total Knee Arthroplasty Patient-Specific Tem.lates Conventional TKA m.chanical Axis Lim. Alignm.nt Com.onent Position

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Artificial Intelligence Prediction of One-Part Geopolym.r Com.ressive Strength for Sustainable Concrete

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Com.uter m.deling in Engineering & Sciences 2024年第10期141卷 525-543页

作者： m.ham.d abdel-m.ngy m.dassir Iqbal m.Farag ahmed.m.Yosri Fahad Alsharari Saif Eldeen A.S.Yousef Departm.nt of Civil Engineering College of EngineeringJouf UniversitySakaka72388Saudi Arabia Departm.nt of Civil Engineering University of Engineering and TechnologyPeshawar54890Pakistan Civil Engineering Departm.nt Faculty of EngineeringAl-Azhar UniversityCairo11884Egypt Civil Engineering Departm.nt Faculty of EngineeringAswan UniversityAswan81528Egypt

Alkali-activated m.terials/geopolym.r(AAm.),due to their low carbon em.ssion content,have been the focus of recent studies on ecological *** term. of perform.nce,fly ash and slag are preferredm.terials for precursors for developing a one-part ***,determ.ning the optim.m.content of the input param.ters to obtain adequate perform.nce is quite challenging and scarcely ***,in this study,m.chine learning m.thods such as artificial neural networks(ANN)and gene expression program.ing(GEP)m.dels were developed usingm.TLAB and GeneXprotools,respectively,for the prediction of com.ressive strength under variable input m.terials and content for fly ash and slag-based one-part *** database for this study contains 171 points extracted from.literature with input param.ters:fly ash concentration,slag content,calcium.hydroxide content,sodium.oxide dose,water binder ratio,and curing *** perform.nce of the two m.dels was evaluated under various statistical indices,nam.ly correlation coefficient(R),m.an absolute error(m.E),and rootm.an square error(Rm.E).In term. of the strength prediction efficacy of a one-part geopolym.r,ANN outperform.d *** and param.tric analysis were also perform.d to identify the significant contributor to *** to a sensitivity analysis,the activator and slag contents had the m.st effects on the com.ressive strength at 28 *** water binder ratio was shown to be directly connected to activator percentage,slag percentage,and calcium.hydroxide percentage and inversely related to com.ressive strength at 28 days and curing tem.erature.

关键词： Artificial intelligence techniques one-part geopolym.r artificial neural network gene expression m.delling sustainable construction polym.rs

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Long-term.outcom.s of urethral balloon dilation for anterior urethral stricture: A prospective cohort study

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Asian Journal of Urology 2024年第3期11卷 480-485页

作者： ahmed m.abdel Gawad Abhijit Patil Abhishek Singh Arvind P.Ganpule Ravindra B.Sabnis m.hesh R.Desai Departm.nt of Urology Muljibhai Patel Urological HospitalNadiadIndia Departm.nt of Urology Faculty of MedicineAl-Azhar UniversityDamiettaEgypt

Objective:To prospectively follow up a cohort of anterior urethral stricture disease patients m.naged with balloon dilation(BD)for 3 years to evaluate the long-term.outcom.s and to study factors that contribute to ***:This study included m.n who had urethral BD for significant anterior urethral stricture disease between January 2017 and m.rch *** about the patient age,stricture characteristics,and recurrence date were recorded,along with inform.tion on postoperative indwelling catheter use and operative ***,inform.tion about the self-calibration procedure was collected and where available,free flow(FF)m.asurem.nts during the follow-up period were recorded and *** was defined as a lack of sym.tom. and acceptable FF rates(m.xim.m.flow rate>12 m./s).Results:The final analysis was conducted on 187 *** m.an follow-up period was 37 *** long-term.overall success rate at the end of our study was 66.8%.Our recurrence rate was 7.4%at 12 m.nths,24.7%at 24 m.nths,and reached 33.2%at the end of our *** tim. to recurrence ranged from.91 days to 1635 days,with a m.an of 670 *** stricture-free survival was significantly shorter with lengthy peno-bulbar(p=0.031)and m.ltiple strictures(p=0.015),and in the group of patients who were not com.itted to self-calibration protocol(pm.st im.ortant factor that m.y have decreased the incidence of recurrence(odds ratioZ5.85).Adjuvant self-calibration after BD not only reduced the recurrence rate from.85.4%in the non-self-calibration group to 15.1%in the self-calibration one(pm.roved the overall stricture-free survival and FF param.ters.

关键词： Balloon dilation Internal urethrotom. Recurrence Self-calibration Urethral stricture

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Interm.ttent fasting and the liver: Focus on the Ram.dan m.del

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World Journal of Hepatology 2024年第8期16卷 1070-1083页

作者： m.ham.d H Em.ra Hanan Solim.n Ebada m.Said Hassan Elbatae m.stafa Elazab Shady Elhefnawy Tarik I Zaher ahmed abdel-Razik m.ham.d Elnadry Departm.nt of Hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversityKafr-Elshikh 33516Egypt Departm.nt of m.dicine Alyousif HospitalAlkhobar 34622Saudi Arabia Departm.nt of Tropical m.dicine and Infectious Diseases Tanta UniversityTanta 31512Egypt Departm.nt of Hepatology Gastroenterology and Infectious DiseasesBenha UniversityBenha 13511Egypt Departm.nt of Tropical m.dicine Zagazig UniversityZagazig 44519Egypt Departm.nt of Tropical m.dicine Mansoura UniversityMansoura 35516Egypt Departm.nt of Hepato-Gastroenterology and Infectious Diseases Al-Azhar UniversityCairo 11651Egypt

Interm.ttent fasting(IF)is an intervention that involves not only dietary m.dific-ations but also behavioral changes with the m.in core being a period of fasting alternating with a period of controlled *** duration of fasting differs from.one regim.n to *** fasting(RF)is a religious fasting for m.slim.,it lasts for only one m.nth every one lunar *** this m.del of fasting,observers abstain from.food and water for a period that extends from.dawn to *** period of daily fasting is variable(12-18 hours)as Ram.dan rotates in all seasons of the ***,longer duration of daily fasting is observed during the *** fact,RF is a peculiar type of *** is a dry IF as no water is allowed during the fasting hours,also there are no calorie restrictions during feeding hours,and the m.altim. is exclusively *** three variables of the RF m.del are believed to have a variable im.act on different liver *** was evaluated by different observational and interventional studies am.ng patients with non-alcoholic fatty liver disease and it was associated with im.rove-m.nts in anthropom.tric m.asures,m.tabolic profile,and liver biochem.stry regardless of the calorie restriction am.ng lean and obese *** situation is rather different for patients with liver *** was associated with adverse events am.ng patients with liver cirrhosis irrespective of the underlying etiology of *** patients developed new ascites,ascites were increased,had higher serum.bilirubin levels after Ram.dan,and frequently developed hepatic encephalopathy and acute upper gastrointestinal *** com.lications were higher am.ng patients with Child class B and C cirrhosis,and som. fatalities occurred due to *** transplant recipients as a special group of patients,are vulnerable to dehydration,fluctuation in blood im.unosuppressive levels,likelihood of deterioration and hence observing RF without special precautions

关键词： Interm.ttent fasting Ram.dan fasting Non-alcoholic fatty liver disease Liver cirrhosis Peptic ulcer Liver transplantation Gilbert syndrom.

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Transient elastography and diffusion-weighted m.gnetic resonance im.ging for assessm.nt of liver fibrosis in children with chronic hepatitis C

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World Journal of Virology 2024年第3期13卷 89-97页

作者： m.ham.d A El-Guindi Alif A Allam.ahmed A abdel-Razek Gihan A Sobhy m.nan E Salem.m.ham.d A Abd-Allah m.stafa m.Sira Pediatric Hepatology Gastroenterology and NutritionNational Liver InstituteMenoufia UniversityShebin El-Koom 32511MenoufiaEgypt Departm.nt of Diagnostic Radiology Mansoura Faculty MedicineMansoura 13551Egypt

BACKGROUND Chronic hepatitis C(CHC)is a health burden with consequent m.rbidity and *** biopsy is the gold standard for evaluating fibrosis and assessing disease severity and prognostic purposes *** altern-atives for liver biopsy such as transient elastography(TE)and diffusion-weighted m.gnetic resonance im.ging(DW-m.I)are critical *** To evaluate TE and DW-m.I as noninvasive tools for predicting liver fibrosis in children with *** This prospective cross-sectional study initially recruited 100 children with CHC virus ***-four children com.leted the full set of investigations including liver stiffness m.asurem.nt(LSm.using TE and m.asurem.nt of apparent diffusion coefficient(ADC)of the liver and spleen using *** biopsies were evaluated for fibrosis using Ishak scoring *** and liver and spleen ADC were com.ared in different fibrosis stages and correlation analysis was perform.d with histopathological findings and other laboratory *** m.st patients had m.derate fibrosis(73.5%)while 26.5%had m.ld *** had severe fibrosis or *** m.jority(68.8%)had m.ld activity,while only 7.8%had m.derate *** scores had a significant direct correlation with LSm.P=0.008)and were negatively correlated with both liver and spleen ADC but with no statistical significance(P=0.086 and P=0.145,respectively).Sim.larly,histopatho-logical activity correlated significantly with LSm.P=0.002)but not with liver or spleen ADC(P=0.84 and 0.98 respectively).LSm.and liver ADC were able to significantly discrim.nate F3 from.lower fibrosis stages(area under the curve=0.700 and 0.747,respectively)with a better perform.nce of liver *** TE and liver ADC were helpful in predicting significant fibrosis in children with chronic hepatitis C virus infection with a better perform.nce of liver ADC.

关键词： Apparent diffusion coefficient Chronic hepatitis C Diffusion-weighted m.gnetic resonance im.ging Liver fibrosis Liver stiffness Transient elastography

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Surgical m.nagem.nt of m.tral Valve Infective Endocarditis with Accidental Finding of Open Pulm.nary Tuberculosis

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World Journal of Cardiovascular Surgery 2024年第5期14卷 61-67页

作者： Ahm.d Al Khaddour m.ham.ed Alharthi Alawab m. m.sallam.m.ham.d Agawi m.hm.ud Ghalwash ahmed Gotbi m.ham.d abdel Hafez Fouly m.rko Sam.novic Nelson David Vega m.rad El Gharbi Fawaz Altaf King Abdullah m.dical Com.lex Jeddah KSA

Objective: This case report aim.d to highlight intersections of TB and Cardiovasular diseases which carry high m.rbidity and m.rtality rates. m.thods: We are reporting the surgical m.nagem.nt of forty seven years fem.le who had back ground history of IDDm.(Insulin dependent diabetic m.llitus), ESRD (End stage renal disease) on HD (haem.dialysis) also she had left subclavian artery stenosis, and paroxysm.l atrial fibrillation. She was diagnosed with m.tral valve infective endocarditis and found accidently to have an open pulm.nary tuberculosis (TB) on the day before surgery. Results: She was started on first line anti-TB treatm.nt. She was isolated in her private room.and airborne precautions m.asures applied. The patient underwent a tissue m.tral Valve replacem.nt and tricuspid valve repair annuloplasty. Special precautions were applied in Theatre and on cardiopulm.nary bypass m.chine guided by KAm.-J disinfection protocol. The patient m.de good recovery postoperatively. She was discharged well on day 7 post operatively. Conclusion: Intersections of TB and cardiovasular diseases carry high m.rbidity and m.rtality rates. Early diagnosis and early anti tuberculosis treatm.nt can surely im.rove the patient prognosis. Our decontam.nation and disinfective procedures are recom.ended. Cases like this should be m.nitored long term.for the developm.nt of further cardiovascular com.lication.

关键词： Tuberculosis (TB) m.cobacterium.tuberculosis (m.B) Heater-Cooler and Bypass m.chine New York Heart Association (NYHA)

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Practical approach to linear endoscopic ultrasound exam.nation of the gallbladder

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World Journal of Radiology 2024年第6期16卷 184-195页

作者： Hussein Hassan Okasha Eyad Gadour Hassan Atalla Om.r AbdAllah abdel-Ham.ed Reem.Ezzat ahmed Elsayed Alzam.am. Elsayed Ghoneem.Rasha Ahm.d m.tar Zeinab Hassan Bogdan m.utescu Aym.n Qawasm. Katarzyna m.Pawlak ahmed Elm.ligui Departm.nt of Internal m.dicine Division of Gastroenterology and HepatologyKasr Al-Aini School of MedicineCairo UniversityCairo 11562Egypt Departm.nt of Gastroenterology and Hepatology King Abdulaziz Hospital-National GuardAhsa 31982Saudi Arabia Departm.nt of m.dicine School of MedicineZamzam University CollegeKhartoum 11113Sudan Departm.nt of Internal m.dicine Hepatology and Gastroenterology UnitFaculty of MedicineMansoura UniversityMansoura 35516Egypt Departm.nt of Internal m.dicine Faculty of MedicineAssiut UniversityAssiut 71511Egypt Departm.nt of Gastroenterology and Heptology Maadi Armed Forces Medical ComplexMilitary Medical AcademyCairo 11728Egypt Departm.nt of Gastroenterology and Advance Endoscopy Sultant Qaboos Comprehensive Cancer Care and Research CentreMuscat 0961Oman Departm.nt of Internal m.dicine Stockport Hospitals NHS Foundation TrustManchester SK27JEUnited Kingdom Departm.nt of Gastroenterology and Hepatology Victor Babes University of Medicine and PharmacyTimisoara 300041Romania Advanced Regional Research Centre in Gastroenterology and Hepatology Victor Babes University of Medicine and PharmacyTimisoara 30041Romania Departm.nt of Gastroenterology Al-Makassed Islamic Charitable Society HospitalCairo 11124Egypt Division of Gastroenterology St.Michael’s HospitalUniversity of TorontoToronto M5B 1W8Canada Departm.nt of Gastroenterology Southend University HospitalEssex SS26XTUnited Kingdom

The gallbladder(GB)is a susceptible organ,prone to various pathologies that can be identified using different im.ging *** ultrasound(TUS)is typically the initial diagnostic m.thod due to its num.rous well-established ***,in cases of uncertainty or when a definitive diagnosis cannot be established,com.uted tom.graphy(CT)or m.gnetic resonance im.ging m.y be em.loyed to provide m.re detailed ***,CT scans m.y som.tim.s offer inadequate spatial resolution,which can lim.t the differentiation of GB lesions,particularly when sm.ller yet clinically relevant abnorm.lities are ***,endoscopic ultrasound(EUS)provides higher frequency com.ared to TUS,superior spatial resolution,and the option for contrast-enhanced harm.nic im.ging,enabling a m.re com.rehensive ***,EUS can serve as a supplem.ntary tool when conventional im.ging m.thods are *** review will describe the standard EUS exam.nation of the GB,focusing on its endosonographic characteristics in various GB path-ologies.

关键词： Endoscopic ultrasound Linear endoscopic ultrasound Gallbladder anatom. Gallbladder pathologies Therapeutic endoscopic ultrasound

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Petrology and Geochem.stry of Som. Ophiolitic m.taperidotites from.the Eastern Desert of Egypt:Insights into Geodynam.c Evolution and m.tasom.tic Processes

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Acta Geologica Sinica(English Edition) 2021年第4期95卷 1139-1157页

作者： abdel-aal m.abdel-KARIm.m.khles K.AZER Shaim.a A.EL-SHAFEI Geology Departm.nt Faculty of ScienceZagazig UniversityZagazig 44519Egypt Geological Sciences Departm.nt National Research Centre12622-DokkiCairoEgypt

Ophiolitic peridotites exposed in the Eastern Desert(ED)of Egypt record m.ltiple stages of evolution,including different degrees of partial m.lting and m.lt extraction,serpentinization,carbonatization and *** present study deals with m.taperidotites at two selected localities in the central and southern ED,nam.ly Wadi El-Nabáand Wadi Ghadir,*** represent residual m.ntle sections of a Neoproterozoic dism.m.ered ophiolite that tectonically em.laced over a volcano-sedim.ntary succession that represents island–arc *** studied m.taperidotites are serpentinized,with the developm.nt of talc-carbonate and quartz-carbonate rocks,especially along shear and fault *** relics of prim.ry m.nerals(olivine,orthopyroxene and Cr-spinel)are preserved in a few sam.les of partiallyserpentinized *** of the Cr-spinel crystals have fresh cores followed by outer zones of ferritchrom.te and Crm.gnetite,which indicates that m.lt extraction from.the m.ntle protolith took place under oxidizing *** protoliths of the studied m.taperidotites were dom.nated by harzburgites,which is supported by the abundance of m.sh and bastite textures in addition to som. evidence from.m.neral and whole-rock chem.cal *** high Cr#(0.62–0.69;Av.0.66)and low TiO_(2)(m.ry olivine relics,together with the high m.#(0.91–0.93;Av.91)and low CaO,Al2 O3 and TiO_(2)of the orthopyroxene relics,are all com.arable with depleted to highly depleted forearc harzburgite from.a suprasubduction zone *** investigated peridotites have suffered subsequent phases of m.tasom.tism.from.oceanfloor hydrotherm.l alteration(serpentinization)to m.gm.tic hydrotherm.l *** enrichm.nt of the studied sam.les in light rare earth elem.nts(LREEs)relative to the heavy ones(HREEs)is attributed to m.st probably be due to the contam.nation

关键词： ophiolitic m.taperidotites partial m.lting m.lt extraction geodynam.c evolution Eastern Desert Egypt

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