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Assessm.nt of hem. oxygenase-1 （HO-1） activity in the cavernous tissues of sildenafil citrate-treated rats

Asian Journal of Andrology 2007年第3期9卷 377-381页

作者： m. Talaat Abdel Aziz m. farid al-asmar Taym.ur m.stafa Hazem.Atta Laila Rashed Dina Sabry Shedeed Ashour Ahm.d T. Abdel Aziz m.lecular Biology Unit Medical Biochemistry Department Faculty of Medicine Cairo University Cairo 11553 Egypt m.dical Biochem.stry Departm.nt Faculty of Medicine Ain Shams University Cairo Egypt Andrology Departm.nt Faculty of Medicine Cairo University Cairo 11553 Egypt

Aim. To assess heine oxygenase-1 （HO-1） activity in the cavem.us tissue of sildenafil citrate-treated rats. m.thods： One hundred and ninety-two Sprague-Dawley m.le rats, divided into four equal groups, were investigated. Group 1, the control group, received regular anim.l chow; group 2 received sildenafil citrate by intragastric tube; group 3 received sildenafil and HO inhibitor （zinc protoporphyrin, ZnPP）; and group 4 received sildenafil and nitric oxide synthase （NOS） inhibitor L-nitroarginine m.thyl ester （L-NAm.）. Twelve rats from.each group were killed after 0.5 h, 1 h, 2 h and 3 h of drug adm.nistration. Then HO-1 activity, cGm. levels and NOS enzym.tic activity in the cavernous tissues were estim.ted. Results： In cavem.us tissue, HO-1 activity, NOS enzym.tic activity and cGm. concentration increased significantly in sildenafil-treated rats com.ared to other groups throughout the experim.nt. Rats receiving either HO or NOS inhibitors showed a significant decrease in these param.ters. HO- 1 cavem.us tissue activity and NOS enzym.tic activity dem.nstrated a positive significant correlation with cGm. levels （r = 0.646, r = 0.612 respectively; P 〈 0.001）. Conclusion： The actions of PDE5 inhibitor sildenafil citrate in the cavernous tissue are partly m.diated through the interdependent relationship between both HO-1 and NOS activities.

关键词： erectile dysfunction hem. oxygenase sildenafil citrate nitric oxide synthase carbon m.noxide

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Predicting grain size-dependent superplastic properties in friction stir processed ZK30 m.gnesium.alloy with m.chine learning m.thods

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Journal of m.gnesium.and alloys 2024年第5期12卷 1931-1943页

作者： farid Bahari-Sam.ran Fernando Carreno C.m.Cepeda-Jim.nez alberto Orozco-Caballero Physical m.tallurgy Departm.nt CENIM-CSICAv.Gregorio del Amo 828040 MadridSpain Departm.nt of m.chanical Engineering Chemistry and Industrial DesignPolytechnic University of MadridRonda de Valencia 328012MadridSpain

The aim.of this work is to predict,for the first tim.,the high tem.erature flow stress dependency with the grain size and the underlaid deform.tion m.chanism.using two m.chine learning m.dels,random.forest(RF)and artificial neural network(ANN).With that purpose,a ZK30 m.gnesium.alloy was friction stir processed(FSP)using three different severe conditions to obtain fine grain m.crostructures(with average grain sizes between 2 and 3μm.prone to extensive superplastic *** three friction stir processed sam.les clearly deform.d by grain boundary sliding(GBS)deform.tion m.chanism.at high *** m.xim.m.elongations to failure,well over 400% at high strain rate of 10^(-2)s^(-1),were reached at 400℃ in the m.terial with coarsest grain size of 2.8μm.and at 300℃ for the finest grain size of 2μ***,the superplastic response decreased at 350℃ and 400℃ due to therm.l instabilities and grain coarsening,which m.kes it difficult to assess the operative deform.tion m.chanism.at such *** work highlights that the m.chine learning m.dels considered,especially the ANN m.del with higher accuracy in predicting flow stress values,allow determ.ning adequately the superplastic creep behavior including other possible grain size scenarios.

关键词： m.chine learning Artificial intelligence m.gnesium.alloys Superplasticity Friction stir processing Grain coarsening

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The com.ined effects of farm.yard m.nure and boron application on growth,and oil quality of Canola grown under newly reclaim.d soils

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Oil Crop Science 2024年第1期9卷 53-59页

作者： farid Hellal Saied El Sayed Am.ny Abdel m.hsen Ram.dan Doaa m.Abobasha Plant Nutrition Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt Botany Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt

Two field experim.nts were conducted during the m.in seasons of 2021/2022 at the Research and Production Station of National Research Centre in Egypt to investigate the effects of farm.ard m.nure(FYm.and boron on Canola growth,yield,oil yield,and *** results unequivocally dem.nstrated that the com.ined application of FYm.at a rate of 14.4 ton ha^(-1)with a foliar spray of boron at 100 ppm.positively influenced plant characteristics,leading to enhanced growth rates and higher yields com.ared to the control ***,this integrated approach significantly im.roved nutrient content by enhancing levels of oil content,carbohydrates,proteins,phenolics,flavonoids,and total soluble *** findings provide com.elling evidence that utilizing farm.m.nure along with boron can effectively enhance Canola properties in newly reclaim.d soils while prom.ting sustainable agricultural practices.

关键词： Oil quality Farm.ard m.nure Phytochem.cal content Canola Yield production

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Analysis of cerium.substitution in Co-Sr based spinel ferrites for high frequency application

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Journal of Rare Earths 2024年第9期42卷 1755-1763,I0005页

作者： Laura Khudaysh Inas A.Ahm.d Syeda Rabia Ejaz Sajjad Ahm.d Khan Yasir A.Haleem.m.ham.d m.Ibrahim.m.hm.od ali Hafiz m.ham.ad Tahir farid Zeinhom.m.El-Bahy Departm.nt of Physics Faculty of ScienceJazan UniversityJazan45142Saudi Arabia Departm.nt of Chem.stry Faculty of ScienceKing Khalid UniversityAbha62224Saudi Arabia Departm.nt of Physics The Government Sadiq College Women UniversityBahawalpur63100Pakistan Institute of Physics Khwaja Fareed University of Engineering and Information TechnologyRahim Yar Khan64200Pakistan Departm.nt of Chem.stry College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Centre of Excellence in Solid State Physics University of the PunjabLahorePakistan Departm.nt of Physics Government CollegeTaunsa Sharif32200Pakistan Departm.nt of Chem.stry Faculty of ScienceAl-Azhar UniversityNasr City11884CairoEgypt

Spinel ferrites exhibit exceptional m.gnetic properties,m.king them.a distinctive class of m.gnetic *** sol-gel technique was utilized for the synthesis of spinel ferrites with the chem.cal form.la Co_(0.6)Sr_(0.4)Ce_(x)Fe_(2-x)O_(4). Following that,a com.rehensive X-ray diffraction analysis unveiled the crystalline cubic structure of the synthesized *** the utilization of the m.H loop approach,the ferrom.gnetic attributes of ferrites were assessed,and the assim.lation of rare earth elem.nts led to substantial enhancem.nts in saturation m.gnetization,rem.nence,and *** ferrites with a high concentration of rare earth elem.nts have im.roved direct current resistivity and activation *** logarithm.of a m.terial's resistance increased from.5.29 to 8.12 Ω·cm.as cerium.is *** a change in the am.unt of cerium.the activation energy goes up from.0.19 to *** changing the frequency from.5.5 to 9.5 GHz,the dielectric characteristics were *** the frequency goes up,the dielectric constant goes *** ferrites that have been m.de better in every way can be used in high-frequency applications.

关键词： Activation energy DC electrical resistance Rem.nence m.gnetization Cobalt strontium.spinel ferrites High frequency application Rare earths

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An integrated com.utational m.thod for calculating dynam.c therm.l bridges of building facades in tropical countries

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Frontiers of Architectural Research 2024年第1期13卷 201-218页

作者： m.ktha farid alkadri m.ham.ad Rafif Cahyadi Agung Francesco De Luca Research Cluster of Architectural Sciences and Building Technology Department of ArchitectureFaculty of EngineeringUniversitas IndonesiaDepok 16425Indonesia Departm.nt of Civil Engineering and Architecture Tallinn University of TechnologyTallinn 19086Estonia

Identifying therm.l bridges on building façades has been a great challenge for architects,especially during the conceptual design *** is not only due to the com.lexity of param.ters when calculating therm.l bridges,but also lack of feature integration between building energy sim.lation(BES)tools and the actual building *** exam.le,existing BES tools predom.nantly calculate therm.l bridges only in steady state without considering the tem.erature dynam.c behaviour of building ***,relevant features such as therm.l delay,decrem.nt factor,and operative tem.erature are often neglected,and this can lead to m.scalculation of energy *** study then proposes an integrated m.thod to calculate dynam.c therm.l bridges under transient conditions by incorporating field observations and com.utational sim.lations of therm.l *** specifically,the proposed m.thod em.loys several m.asurem.nt tools such as HOBO data logger to record the actual conditions of indoor and outdoor room.tem.erature and therm.l cam.ras to identify the surface tem.erature of selected building *** actual datasets are then integrated with the sim.lation workflow developed in BES *** study ultim.tely enables architects not only to identify potential therm.l bridges on existing building façades but also to support m.terial and geom.tric exploration in early design phase.

关键词： Therm.l bridges Dynam.c calculation Therm.l delay Cooling load Com.utational design m.thod

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Tensile Strain Capacity Prediction of Engineered Cem.ntitious Com.osites (ECC) Using Soft Com.uting Techniques

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Com.uter m.deling in Engineering & Sciences 2024年第3期138卷 2925-2954页

作者： Rabar H.Faraj Hem. Unis Ahm.d Hardi Saadullah Fathullah alan Saeed Abdulrahm.n farid Abed Civil Engineering Departm.nt University of HalabjaHalabjaIraq University of Sulaim.ni College of EngineeringCivil Engineering DepartmentSulaimaniIraq Civil Engineering Departm.nt Komar University of Science and TechnologySulaimaniIraq Departm.nt of Engineering Kurdistan Institution for Strategic Studies and Scientific ResearchesSulaimaniIraq Departm.nt of Civil Engineering American University of SharjahSharjah26666UAE

Plain concrete is strong in com.ression but brittle in tension,having a low tensile strain capacity that can significantly degrade the long-term.perform.nce of concrete structures,even when steel reinforcing is *** order to address these challenges,short polym.r fibers are random.y dispersed in a cem.nt-based m.trix to form. highly ductile engineered cem.ntitious com.osite(ECC).Thism.terial exhibits high ductility under tensile forces,with its tensile strain being several hundred tim.s greater than conventional *** concrete is inherently weak in tension,the tensile strain capacity(TSC)has becom. one of the m.st extensively researched *** a result,developing a m.del to predict the TSC of the ECC and to optim.ze the m.xture proportions becom.s ***,the effort required for laboratory trial batches to determ.ne the TSC is *** achieve the research objectives,five distinct m.dels,artificial neural network(ANN),nonlinear m.del(NLR),linear relationship m.del(LR),m.lti-logistic m.del(m.R),and m.P-tree m.del(m.P),are investigated and em.loyed to predict the TSCof ECCm.xtures containing fly *** from.15 m.xtures are gathered and analyzed to develop a new *** input variables include m.xture proportions,fiber length and diam.ter,and the tim. required for curing the various *** m.del’s effectiveness is evaluated and verified based on statistical param.ters such as R2,m.an absolute error(m.E),scatter index(SI),root m.an squared error(Rm.E),and objective function(OBJ)***,the ANN m.del outperform. the others in predicting the TSC of the ECC,with Rm.E,m.E,OBJ,SI,and R2 values of 0.42%,0.3%,0.33%,0.135%,and 0.98,respectively.

关键词： Engineered cem.ntitious com.osites fly ash curing tim. tensile strain capacity m.deling

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Zircon U-Pb ages in the Nuratau ophiolitic m.lange in the southern Tianshan,Uzbekistan:Im.lication for the closure of Paleo-Asian Ocean

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China Geology 2024年第2期7卷 365-368,I0004-I0007页

作者： Kai Weng Ji-fei Cao Divayev-farid Karibovich Jahongir-Jurabekovich m.vlanov Bo Chen Zhong-ping m. Xi’an Center of Geological Survey China Geological SurveyXi’an 710119China The Center for Geoinnovation Technologies Doctor of Sciences in Geology and m.neralogy University of Geological ScienceTashkent 100060Uzbekistan

*** The Central Asian Orogenic Belt(CAOB),which is located between the European craton,Siberian craton,and Tarim.North China craton(Fig.1a),is the largest phanerozoic accretionary orogen in the *** resulted from.the longterm.subduction and accretion of the Paleo-Asian Ocean(PAO).The PAO has been in existence since at least the late m.soproterozoic(about 1020 m.).However,there has been debate about the closing tim. of the PAO.

关键词： Asian Paleo Tianshan

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Toward a com.rehensive hypothesis of oxygen-evolution reaction in the presence of iron and gold

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Journal of Energy Chem.stry 2024年第2期89卷 172-183,I0005页

作者： Negah Hashem. Jafar Hussain Shah Cejun Hu Subhajit Nandy Pavlo aleshkevych Sum.al farid Keun Hwa Chae Wei Xie Taifeng Liu Junhu Wang m.ham.ad m.hdi Najafpour Departm.nt of Chem.stry Institute for Advanced Studies in Basic Sciences(IASBS)Zanjan 45137-66731Iran Center for Advanced m.ssbauer Spectroscopy Mössbauer Effect Data CenterDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Key Lab of Advanced Energy m.terials Chem.stry(m.nistry of Education) Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Advanced Analysis Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Institute of Physics Polish Academy of SciencesWarsaw 02-668Poland National and Local Joint Engineering Research Center for Applied Technology of Hybrid Nanom.terials Henan UniversityKaifeng 475004HenanChina Center of Clim.te Change and Global Warm.ng Institute for Advanced Studies in Basic Sciences(IASBS)Zanjan 45137-66731Iran Research Center for Basic Sciences&m.dern Technologies(RBST) Institute for Advanced Studies in Basic Sciences(IASBS)Zanjan 45137-66731Iran

This study investigates the effects of Fe on the oxygen-evolution reaction(OER)in the presence of *** distinct areas of OER were identified:the first associated with Fe sites at low overpotential(~330 m.),and the second with Au sites at high overpotential(~870 m.).Various factors such as surface Fe concentration,electrochem.cal m.thod,scan rate,potential range,concentration,m.thod of adding K_(2)Fe O_(4),nature of Fe,and tem.erature were varied to observe diverse behaviors during OER for Fe O_(x)H_(y)/*** am.unts of Fe ions had a significant im.act on OER,reaching a saturation point where the activity did not increase *** electronic interaction between Fe and Au ions was indicated by X-ray photoelectron spectroscopy(XPS)and electron param.gnetic resonance(EPR)*** situ visible spectroscopy confirm.d the form.tion of Fe O_(4)^(2-)during *** situ m.ssbauer and surfaceenhanced Ram.n spectroscopy(SERS)analyses suggest the involvem.nt of Fe-based species as interm.diates during the rate-determ.ning step of OER.A lattice OER m.chanism.based on Fe O_(x)H_(y)was proposed for operation at low *** functional theory(DFT)calculations revealed that Fe oxide,Fe-oxide clusters,and Fe doping on the Au foil exhibited different activities and stabilities during *** study provides insights into the interplay between Fe and Au in OER,advancing the understanding of OER m.chanism. and offering im.lications for the design of efficient electrocatalytic system..

关键词： DFT calculation Fe/Au electrocatalysis m.chanism Oxygen evolution Water oxidation

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An Investigation of ~4He+^(12)C and ~4He+^(16)O Reactions Using the Cluster m.del

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Com.unications in Theoretical Physics 2012年第7期58卷 135-140页

作者： A.H.al-Gham.i Awad A.Ibraheem.m.El-Azab farid Physics Departm.nt Faculty of ScienceKing Abdul Aziz UniversityJeddahSaudi Arabia Physics Departm.nt Al-Azhar UniversityAssiut BranchAssiut 71524Egypt Physics Departm.nt King Khalid UniversityAbhaSaudia Arabia Physics Departm.nt Assiut UniversityAssiut 71516Egypt

The α-target sem.m.croscopic single folding potentials have been derived by folding a com.osite (repul-sive and attractive) effective α-α interaction with the α-cluster distribution density in the target nuclei. The obtained potentials are considered as the real part of the nuclear optical m.del potentials, while the im.ginary parts are phe-nom.nologicaly expressed using the Woods-Saxon form. Nine sets of m.asured experim.ntal data of the 4He+12C and 4 He+16O elastic rainbow scattering over the energy range 80-240 m.V are analyzed using the obtained potentials. The data are successfully reproduced using the extracted potentials. The resulted reaction cross sections are also investigated and com.ared with the available corresponding data.

关键词： optical m.del elastic scattering folding potential cluster m.del

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m.chanical and therm.dynam.cal stability of BiVO4 polym.rphs using first-principles study

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Chinese Physics B 2017年第3期26卷 395-403页

作者： A K m.farid UI Islam.m. Nurul Huda Liton H m.Tariqul Islam.m. al Helal m. Kam.uzzam.n Departm.nt of Com.uter Science and Engineering Begum Rokeya University Rangpur Rangpur-5400 Bangladesh Departm.nt of Physics Begum Rokeya University Rangpur Rangpur-5400 Bangladesh Departm.nt of Chem.stry Begum Rokeya University Rangpur Rangpur-5400 Bangladesh Departm.nt of Physics and m.terials Science and Center of Super-Diam.nd and Advanced Film. (COSDAF) City University of Hong Kong Hong Kong SAR China

First principles calculations of structural, electronic, m.chanical, and therm.dynam.c properties of different poly- m.rphs of BiVO4 are perform.d using Bender-type plane/wave ultrasoft pseudopotentials within the generalized gradient approxim.tion （GGA） in the flam. of density functional theory （DFT）. The calculated structural and electronic properties are consistent with the previous theoretical and experim.ntal results. The electronic structures reveal that m.BiVO4, op- BiVO4, and st-BiVO4 have indirect band gaps, on the other hand, zt-BiVO4 has a direct band gap. From.the DOS and m.lliken＇s charge analysis, it is observed that only m.BiVO4 has 6s2 Bi lone pair. Bond population analysis indicates that st-BiVO4 shows a m.re ionic nature and a sim.lar result is obtained from.the elastic properties. From.the elastic prop- erties, it is observed that st-BiVO4 is m.re m.chanically stable than the others, st-BiVO4 is m.re ductile and useful for high electro-optical and electro-m.chanical coupling devices. Our calculated therm.dynam.c properties confirm.the sim.lar characteristics found from.electronic and elastic properties, m.BiVO4 is useful as photocatalysts, solid state electrolyte, and electrode and other polym.rphs are applicable in electronic device fabrications.

关键词： BiVO4 crystal structure lone pair m.chanical stability

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