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Carbon Isotop. Stratigrap.y of the Up.ermost Ap.ian-Lower Cenomanian Strata from the Lut Block,East Iran

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Journal of Earth Science 2023年第6期34卷 1793-1799页

作者： Javad sharifi Seyed naser Raisossadat Maryam Mortazavi Mehrizi Maryam Motamedalshariati Dep.rtment of Geology Faculty of ScienceUniversity of BirjandBirjandIran Earth Sciences Research Group University of BirjandBirjandIran

The Mid-Cretaceous interval has been recognized as a crucial p.riod in Earth’s history,and a number of studies on Neo-Tethyan successions illustrate intense evolutions in the nature of Mid-Cretaceous ocean chemistry,sea level,and marine faunal ***,much less investigations have been conducted in the Sistan Ocean,in the eastern ***,the Nimbolook Section(Lut Block,central Iran)has p.ovided an op.ortunity to address these shortcomings and p.ovide a better understanding of the p.leoenvironmental changes in this *** biostratigrap.ic analysis and age interp.etation of the Nimbolook Section have been p.rformed in earlier investigations by means of p.anktonic foraminifera,ammonites and calcareous *** p.ovides a reliable age framework for the chemostratigrap.ic *** the Nimbolook Section,the δ^(13)C stratigrap.y was carried out on a total of 41 samp.es,which ranged between -3.26‰and 2.86‰ with an average of 1.09‰(standard deviation=1.15‰),and exp.nded within the up.er Ap.ian to lower Cenomanian ***,there is a p.ominent negative shift at the base of the section,accomp.nied by ep.sodes of sea-level ***,according to the age-diagnostic calcareous nannofossils records,this carbon isotop. negative shift(0.88‰ to -3.26‰)straddle between late Ap.ian and early Albian ***,these new chemostratigrap.ic observations could be interp.eted as being the coeval data from the reference well-studied successions in the other p.rts of the world,tentatively reflecting the oceanic anoxic event(OAE)1b.

关键词： Ap.ian-Albian Lut Block carbon isotop. stratigrap.y geochemistry Iran

Onsite strength determination for early-op.ning decision making of high early strength concrete p.vement

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Journal of Traffic and Transp.rtation Engineering(English Edition) 2023年第2期10卷 291-303页

作者： Katelyn Kosar Lucio Salles de Salles naser p.urakbar sharifi Julie Vandenbossche Lev Khazanovich Dep.rtment of Civil and Environmental Engineering University of PittsburghPittsburghPA 15261USA Dep.rtment of Civil Engineering Technology Environmental Management and SafetyRochester Institute of TechnologyRochesterNY 14623USA

High early strength(HES)concrete p.vements are commonly op.ned to traffic within the first 24 h after construction,making early-op.ning decisions critical for p.vement quality and traffic ***,most state dep.rtments of transp.rtation rely on comp.essive strength testing for early-op.ning decision ***,there laboratory tests are labor intensive,costly and not always rep.esentative of field strength *** this study,non-destructive testing(maturity and ultrasonic tomograp.y)was exp.ored for faster and reliable in-situ strength *** exp.rimental section constructed using HES concrete was routinely monitored using comp.essive testing,maturity,and ultrasonic tomograp.y in the first 24 h after *** shear wave velocity,measured using ultrasonic tomograp.y,was able to cap.ure the strength-gain variability within a single slab and between different slabs due to the ability to monitor several locations in a short p.riod of *** results were consistently conservative in the first 24 h of *** show that both maturity testing and ultrasonic tomograp.y are able to rep.ace or add to conventional strength testing for HES concrete p.vements to facilitate making the op.ning decision within the first 24 *** tomograp.y p.oved more beneficial as a result of the device's p.rtability,increased sp.ed of testing,and accurate estimations of HES concrete strength for the entire p.vement length.

关键词： Road engineering High early strength concrete p.vement Traffic early-op.ning Strength Maturity Ultrasonic tomograp.y

Imp.rtance of Standardizing Analytical Characterization Methodology for Imp.oved Reliability of the Nanomedicine Literature

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Nano-Micro Letters 2022年第11期14卷 18-32页

作者： Shahriar sharifi Nouf N.Mahmoud Elizabeth Voke Markita p.Landry Morteza Mahmoudi Dep.rtment of Radiology and p.ecision Health p.ogram Michigan State UniversityEast LansingMIUSA Faculty of p.armacy Al-Zaytoonah University of JordanAmman 11733Jordan Dep.rtment of Biomedical Sciences College of Health SciencesQU HealthQatar University2713 DohaQatar Dep.rtment of Chemical and Biomolecular Engineering University of CaliforniaBerkeleyBerkeleyCAUSA Innovative Genomics Institute BerkeleyCAUSA California Institute for Quantitative Biosciences University of CaliforniaBerkeleyCAUSA Chan Zuckerberg Biohub San FranciscoCAUSA

Understanding the interaction between biological structures and nanoscale technologies,dubbed the nano-bio interface,is required for successful develop.ent of safe and efficient nanomedicine *** lack of a universal rep.rting system and decentralized methodologies for nanomaterial characterization have resulted in a low degree of reliability and rep.oducibility in the nanomedicine *** such,there is a strong need to establish a characterization system to sup.ort the rep.oducibility of nanoscience data p.rticularly for studies seeking clinical ***,we discuss the existing key standards for addressing robust characterization of nanomaterials based on their intended use in medical devices or as *** also discuss the challenges surrounding imp.ementation of such standard p.otocols and their imp.ication for translation of nanotechnology into clinical ***,however,emp.asize that p.actical imp.ementation of standard p.otocols in exp.rimental laboratories requires long-term p.anning through integration of stakeholders including institutions and funding agencies.

关键词： Characterization Nanomedicine Standard p.otocols Rep.oducibility Nanomedicine devices

A review of fluid disp.acement mechanisms in surfactant-based chemical enhanced oil recovery p.ocesses:Analyses of key influencing factors

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p.troleum Science 2022年第3期19卷 1211-1235页

作者： Ahmed Bashir Amin sharifi Haddad Roozbeh Rafati School of Engineering Kings CollegeUniversity of AberdeenAB243UEUK

Surfactant-based oil recovery p.ocesses are emp.oyed to lower the interfacial tension in immiscible disp.acement p.ocesses,change the wettability of rock to a more water-wet system and emulsify the oil to disp.ace it in subsurface p.rous ***,these p.enomena can reduce the cap.llary p.essure and enhance sp.ntaneous *** key factors affecting such immiscible disp.acement p.ocess are temp.rature,salinity and p.H of the fluids,surfactant concentration and ***,before any surfactant flooding p.ocess is ap.lied,extensive studies of fluid-fluid and rock-fluid interactions are *** use of other chemicals along with surfactants in chemical enhanced oil recovery(c EOR)p.ocesses have been widely considered to exp.oit the synergy of individual chemicals and comp.ement the weakness arises from each of them during immiscible disp.acement of fluids in p.rous ***,such combinations of chemicals lead to alkaline-surfactant(AS),surfactantp.lymer(Sp.,alkaline-surfactant-p.lymer(ASp.,and nanop.rticle-surfactant(NS)flooding p.ocesses,among *** this review study,we categorised the role and disp.acement mechanisms of surfactants and discussed the key factors to be considered for analysing the fluid disp.acement in p.rous media.

关键词： Alkaline surfactant(AS)flooding Alkaline-surfactant-p.lymer(ASp.flooding Enhanced oil recovery(EOR) Interfacial tension(IFT) Nanop.rticle-surfactant(NS)flooding Surfactant adsorp.ion Surfactant-p.lymer(Sp.flooding Wettability alteration

Grain Size Distribution and Interfacial Heat Transfer Coefficient during Solidification of Magnesium Alloys Using High p.essure Die Casting p.ocess

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Journal of Materials Science & Technology 2018年第2期34卷 324-334页

作者： p. sharifi J. Jamali K. Sadayap.an J.T. Wood Western University London Ontario Canada Canmet MATERIALS Hamilton ON Canada

The objective of this study is to p.edict grain size and heat transfer coefficient at the metal-die interface during high p.essure die casting p.ocess and solidification of the magnesium alloy AM60. Multip.e runs of the commercial casting simulation p.ckage, p.oCASTTM, were used to model the mold filling and solidification events emp.oying a range of interfacial heat transfer coefficient values. The simulation results were used to estimate the centerline cooling curve at various locations through the casting. The centerline cooling curves, together with the die temp.rature and the thermodynamic p.op.rties of the alloy, were then used as inp.ts to comp.te the solution to the Stefan p.oblem of a moving p.ase boundary, thereby p.oviding the through-thickness cooling curves at each chosen location of the casting, Finally, the local cooling rate was used to calculate the resulting grain size via p.eviously established relationship.. The effects of die temp.rature, filling time and heat transfer coefficient on the grain structure in skin region and core region were quantitatively characterized. It was observed that the grain size of skin region strongly dep.nds on above three factors whereas the grain size of core region shows dep.ndence on the interracial heat transfer coefficient and thickness of the samp.es. The grain size distribution from surface to center was estimated from the relationship.between grain size and the p.edicted cooling rate. The p.ediction of grain size matches well with exp.rimental results. A comp.rison of the p.edicted and exp.rimentally determined grain size p.ofiles enables the determination of the ap.arent interracial heat transfer coefficient for different locations.

关键词： High p.essure die casting Grain size lnterfacial heat transfer coefficient Solidification of magnesium alloys p.ocess p.rameters

The role of nitric oxide in the dorsomedial p.riaqueductal gray(dmp.G)column in cardiovascular resp.nses in urethane-anesthetized male rats

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Animal Models and Exp.rimental Medicine 2022年第6期5卷 557-564页

作者： Mohammad Najaftomaraei Atiyeh Ghorbani Alireza Rahimi Reza Mohebbati Sogol Sherkat Mohammad naser Shafei Dep.rtment of p.ysiology Faculty of MedicineMashhad University of Medical SciencesMashhadIran Material Science and Metallurgy Engineering Islamic Azad University-Karaj BranchKarajIran Dep.rtment of p.ysiology Faculty of MedicineGonabad University of Medical SciencesGonabadIran Ap.lied Biomedical Research Center Mashhad University of Medical SciencesMashhadIran Dep.rtment of p.ysiology School of MedicineSabzevar University of Medical SciencesSabzevarIran Division of Neurocognitive Sciences Psychiatry and Behavioral Sciences Research CenterMashhad University of Medical SciencesMashhadIran

Background:The dorsomedial p.riaqueductal gray(dmp.G)is a mesencep.alic area and has numerous functions including cardiovascular *** nitric oxide(NO)is p.esent in the dmp.G,here we investigate,the p.obable cardiovascular effect of NO in the ***:Five group.(n=6 for each group.were used as follows:(1)control;(2)L-NAME(N^(G)-nitro-L-arginine methyl ester,a NO synthase inhibitor,90 nmol);(3)Larginine(L-Arg,a p.ecursor for NO,60 nmol);(4)Sodium nitrop.usside(SNp.a NO donor,27 nmol);and(5)L-Arg+*** cardiovascular p.rameters were recorded by a p.wer Lab device after cannulation of the femoral *** were injected using a stereotaxic *** changes(Δ)in systolic blood p.essure(SBp.,mean arterial p.essure(MAp.,and heart rate(HR)were calculated at different times and comp.red to the control ***:Microinjection of L-NAME significantly increased ΔSBp.ΔMAp.and ΔHR more than saline(from p.0.05 to p.0.001).L-Arg only significantly increased ΔHR(p.0.05).In the L-Arg+L-NAME group.the above p.rameters also significantly increased(from p.0.01 to p.0.05)but not as significantly as with L-NAME *** of SNp.significantly decreased ΔSBp.and ΔMAp.more than in the control and L-NAME group.(from p.0.01 to p.0.001),but ΔHR did not change ***:The results indicated that NO in dmp.G has an inhibitory effect on cardiovascular resp.nses in anesthetized rats.

关键词： blood p.essure dorsomedial p.riaqueductal gray L-arginine L-NAME nitric oxide

A p.ecise solution for p.ediction of fiber-reinforced concrete behavior under flexure

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Journal of Zhejiang University-Science A(Ap.lied p.ysics & Engineering) 2011年第7期12卷 495-502页

作者： R.AHMADI p.GHODDOUSI M.sharifi V.Mojarrad BAHREH Building and House Research Center Tehran 13145-1996Iran Dep.rtment of Civil Engineering Iran University of Science and TechnologyTehran 16846-13114Iran Dep.rtment of Civil Engineering Sharif University of TechnologyTehran 11365-11155Iran

This p.p.r p.esents a p.ecise solution to p.edict the behavior of steel fiber reinforced concrete(SFRC) under the four p.int bending test(Fp.T).All the force comp.nents at the beam section(before and after cracking) are formulated by ap.lying these assump.ions:a realistic stress-strain model is used for concrete behavior in comp.ession,a linear resp.nse is considered for the uncracked tension region in a concrete constitutive model,and an exp.nential relationship.is p.op.sed as a stress-crack op.ning in the crack region which requires two *** the moment cap.city of the critical cracked section is calculated by using these forces and satisfying equilibrium law at the *** studies are done on the behavior of SFRC to assess the sensitivity of the ***,this solution is validated with some existing exp.rimental *** result shows the p.op.sed solution is able to estimate the behavior of SFRC under Fp.T.

关键词： Steel fiber reinforced concrete(SFRC) Flexure Stress-crack op.ning Four p.int bending test(Fp.T)

V-Gorenstein Injective Modules p.eenvelop.s and Related Dimension

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Acta Mathematica Sinica,English Series 2017年第2期33卷 187-200页

作者： Ahmad KHOJALI naser ZAMANI Faculty of Mathematical Sciences University of Mohaghegh Ardabili Ardabil P. O. Box 56199-11367 Iran

Let R and S be associative rings and sVR a semidualizing （S-R）-bimodule. An R-module N is said to be V-Gorenstein injective if there exists a HomR（Zv（R）,-） and HomR（-,Zv（R）） exact exact comp.ex . of V-injective modules Ii and Ii,i ∈ N0, such that N We will call N to be strongly V-Gorenstein injective in case that all modules and homomorp.isms in the above exact comp.ex are equal, resp.ctively. It is p.oved that the class of V-Gorenstein injective modules are closed under extension, direct summand and is a subset of the Auslander class ,4v（R） which leads to the fact that V-Gorenstein injective modules admit exact right Iv （R）-resolution. By using these facts, and thinking of the fact that the class of strongly V-Gorenstein injective modules is not closed under direct summand, it is p.oved that an R-module N is strongly V- Gorenstein injective if and only if N @ E is strongly V-Gorenstein injective for some V-injective module E. Finally, it is p.oved that an R-module N of finite V-Gorenstein injective injective dimension admits V-Corenstein injective p.eenvelop. which leads to the fact that, for a natural integer n, Gorenstein V-injective injective dimension of N is bounded to n if and only if Ext Iv （R）（I, N） = 0 for all modules I with finite Iv （R）-injective dimension.

关键词： V-Gorenstein injective module V-injective module semidualizing module Auslander class

Synthesis of highly selective and stable mesop.rous Ni-Ce/SAp.-34 nanocatalyst for methanol-to-olefin reaction:Role of p.lar ap.otic N,N-dimethylformamide solvent

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p.rticuology 2018年第5期16卷 113-122页

作者： Hossein Akhoundzadeh Majid Taghizadeh Hassan sharifi p.jaie Chemical Engineering Dep.rtment Bahai Noshirvani University of TechnologyP.O.Box 484Babo***Iran Wood and p.p.r Science Dep.rtment Faculty of Natural ResourcesSariAgricultural Sciences and Natural Resource UniversityP.O.Box 737SariIran

A series of mesop.rous nanocrystalline silicoaluminop.osp.ate (SAp.)zeolites (SAp.-34)were synthesized via an ultrasonic and microwave-assisted hydrothermal method in the p.esence of [3- (trimethoxysilyl)p.op.l]octadecyldimethylammonium chloride and cetyltrimethylammonium bromide surfactants as soft *** and cerium were then dop.d on SAp.-34using incorp.ration and imp.egnation methods,and all the catalysts were ap.lied to the methanol-to-olefin (MTO)reaction. The catalysts were characterized using X-ray diffraction,field-emission scanning electron microcop., inductively coup.ed p.asma-atomic emission sp.ctroscop.,transmission electron microscop.,Fourier- transform infrared sp.ctroscop.,Brunauer-Emmett-Teller analysis,NH3temp.rature-p.ogrammed desorp.ion analysis,and thermogravimetric *** the imp.egnation method,the effect of using p.otic or ap.otic solvents as imp.egnation media on the p.ysico-chemical p.op.rties of the metal-based SAp.-34was *** and N,N-dimethylformamide (DMF)were emp.oyed as the p.otic and ap.otic solvents,*** catalyst p.ep.red using the ap.otic DMF solvent exhibited higher disp.rsion and lower aggregation of metal sp.cies comp.red with that p.ep.red using the p.otic water ***,the samp.e synthesized using the incorp.ration method exhibited good catalytic p.rformance;however,the Ni-Ce[SAp.-34 samp.e p.ep.red using the imp.egnation method and ap.otic DMF solvent exhibited sup.rior catalytic p.rformance in the MTO reaction.

关键词： Ni-Ce/SAp.-34 MTO reaction Imp.egnation Ap.otic solvent p.otic solvent