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Forgin. Optimization.an. Microstructural Simulation.of an.In.on.l 718 Alloy Used in.Turbin. Discs

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Journ.l of Applied Mathematics an. Physics 2017年第9期5卷 1658-1667页

作者： Seyyed Hashem Mousavi An.jdan.mehrdad Aghaie-Khafri Vahid Joshaghan. Faculty of Materials Scien.e an. En.in.erin. K. N. Toosi University of Technology Tehran Iran

Simulatin. microstructure evolution.durin. forgin. of superalloys is of great in.erest for man.facturer of critical compon.n.s, particularly in.aerospace application.. In.this research, a phen.men.logical approach usin. a mathematical model was employed in.o a commercial fin.te elemen. code, i.e. Abaqus, to study recrystallization.an. grain.growth of In.18 supperalloys durin. forgin.. Model validation.was performed by compression.testin.. Results show that the measured recrystallized volume fraction.an. the grain.size were in.good agreemen. with the model prediction.. Subsequen.ly, the model was used to simulate the evolution.of microstructure in.a turbin. disc. Fin.lly, a techn.que based on.Tagushi method was used to determin. the in.luen.e of forgin. parameters such as forgin. temperature, in.ot height to diameter ratio, an. top die velocity on.the resultan. microstructure. Un.form an. refin.d microstructure of fin.l forgin. was con.idered in.o the objective fun.tion. Optimum as well as the poorest parameters combin.tion.was attain.d through an.lysis. As well the con.ribution.of each parameter on.microstructure developmen. was determin.d through varian.e an.lysis.

关键词： Forgin. Turbin. Disc In.on.l 718 Alloy. Tagushi An.VA An.lysis Microstructure

The Effect of Sulfur-Con.ain.n. Humic Acid on.Yield an. n.trien. Uptake in.Olive Fruit

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Open.Journ.l of Ecology 2017年第4期7卷 279-288页

作者： Atoosa Dan.aei Sara Hassan.our Mohammad Ali Baghaee Maryam Dabbagh mehrdad Babarabie Dr. Shariaty Faculty Technical & Vocational University Tehran Iran Dr.Shariaty Faculty Technical & Vocational University Tehran Iran Agron.my Shahed University and Company’s Technical Manager of Khorram Bahar Atis Tehran Iran Olericulture Department of Horticulture Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran Youn. Researchers an. Elite Club Gorgan Branch Islamic Azad University Gorgan Iran

The combin.d application.of organ.c an. min.ral fertilizers can.be a proper way of n.trition.man.gemen. to in.rease the yield an. quality an. to mitigate en.iron.en.al impacts of chemicals an. the pertain.n. costs. The impact of differen. rates of sulfur-con.ain.n. humic acid was studied on.yield an. n.trien. uptake of the fruits of olive “Zard” three-year-old trees in.a trial based on.a Ran.omized Complete Block Design.with three replication. in.Shariati College of Tehran. Iran. The studied treatmen. was sulfur-con.ain.n. humic acid at four rates of 0, 20, 25 an. 30 kg⋅ha&min.s;1, which was applied at two stages. The highest fresh weight, dry weight, chlorophyll b, caroten.id, n.an. Cu con.en.s were related to humic acid rate of 20 kg⋅ha&min.s;1. The highest fruit len.th, chlorophyll a an. total chlorophyll were observed in.con.rol. The highest K, Fe an. Mn.con.en.s were obtain.d from plan.s treated with 30 kg⋅ha&min.s;1 humic acid. Plan.s treated with 25 kg⋅ha&min.s;1 exhibited the highest P an. Zn.con.en.s. All in.all, the application.of sulfur-con.ain.n. humic acid at differen. rates had favorable impacts on.quan.itative an. qualitative traits of olive fruits.

关键词： Humic Acid Olive Sulfur Yield

Partial IVC Clampin. Improves In.raoperative Hemodyn.mic Parameters in.the Roden. Portacaval An.stomosis Model

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Surgical Scien.e 2011年第2期2卷 102-108页

作者： mehrdad Asgeri n.sheet Waghray Kevin.Mullen.n.der n.der Hen.i Brun.n.raber Juan.San.bria 不详

The mechan.sms in.olved in.the developmen. of hepatic en.ephalopathy still remain.un.ertain. The roden. portacaval shun. is a model that reproduces man. of the pathological features observed in.human. (1), but is a techn.cally deman.in. exercise. While the tradition.l techn.que in.olves complete occlusion.of the IVC, a c-clamp was fashion.d to partially clamp the IVC thereby sustain.n. ven.us return.an. cardiac output. The aim of this study is to determin. if the c-clamp techn.que provides greater hemodyn.mic stability an. en.an.es the success rate of the portacaval shun. procedure. To an.wer this question. two experimen.al groups, c-clamp (n.= 7) an. cross-clamp (n.= 7), an. a sham group (n.= 3) were in.luded. In.raoperative hemodyn.mic parameters were recorded at specific times durin. the procedure. The c-clamp group showed greater hemodyn.mic stability when.compared to the cross-clamp group. It was man.fested by 1) sign.fican.ly higher mean.arterial blood pressure [63 (ran.e, 8) vs 47 (ran.e, 10) mmHg, p n.e, 2) vs 6 (ran.e, 2) secon.s, p n.ry output [0.18 (ran.e, 0.02) vs 0.14 (ran.e, 0.02) ml, p n. 4) lower bowel wet-to-dry ratio [4.168 (ran.e, 0.258) vs 4.731 (ran.e, 0.271), pn.lude partial IVC clampin. improves hemodyn.mic stability durin. the con.truction.of the rat portacaval shun. model.

关键词： Portacaval An.stomosis Portosystemic Shun. Microvascular Surgery Ivc Clampin. Surgical Techn.que En.ephalopathy-Like Roden. Model

Two Iran.an.Rice Cultivars’ Respon.e to n.trogen.an. n.n.-Fertilizer

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Open.Journ.l of Ecology 2017年第10期7卷 591-603页

作者： mehrdad Ghasemi Lemraski Ghorban.n.rmohamadi Hamid Madan. Hussein.Heidari Sharif Abad Hamid Reza Mobasser Departmen. of Agron.my Science and Research Branch Islamic Azad University Tehran Iran Departmen. of Agron.my Arak Branch Islamic Azad University Arak Iran Departmen. of Agron.my Qaemshahr Branch Islamic Azad University Qaemshahr Iran

This experimen. was carried out as split factorial in.ran.omized complete blocks design.with three replication. in.Sari, Iran.durin. 2013 an. 2014. Rice cultivars were chosen.as the main.factor in.ludin. Tarom Mahalli an. Tarom Hashemi. n.trogen.rates (34 an. 69 kg n.ha&min.s;1 an. n.troxin. with n.n.-particle (n.n.-potassium, n.n.-silicon.an. con.rol) selected as the subfactor. The results in.icated that the amoun. of total tiller per hill an. fertile tiller per hill for Tarom Hashemi was more than.Tarom Mahalli in.both years. The highest paddy yield in.both years was observed for Tarom Hashemi, the main.reason.behin. it is in.reasin. pan.cle len.th an. fertile tiller n.mber for this cultivar. For Tarom Hashemi, the highest paddy yield (5000 kg⋅ha&min.s;1) was produced with 34 kg n.ha&min.s;1 an. n.n. potassium application. For Tarom Mahalli, the highest paddy yield 4657 kg⋅ha&min.s;1 was obtain.d with n.troxin.an. n.n. potassium con.umption. The highest harvest in.ex was achieved with n.troxin.an. n.n.-silicon.con.umption. Therefore, n.n. particle con.umption.in.both cultivars resulted in.improved yield.

关键词： n.n. Particle n.trogen n.n. Silicon Rice Yield

Graphite n.n.platelets Composite Materials: Role of the Epoxy-System in.the Thermal Con.uctivity

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Journ.l of Materials Scien.e an. Chemical En.in.erin. 2015年第5期3卷 75-87页

作者： Lurayn. Diaz-Chacon.Ren.ud Metz Philippe Dieudon.é Jean.Louis Ban.ign.es Said Tahir mehrdad Hassan.adeh Eleida Sosa Rein.ldo Aten.io Laboratorio de Materiales para Tecn.logías Emergen.es Centro de Investigación en Tecnología de los Materiales Instituto Venezolano de Investigaciones Científicas Maracaibo Venezuela Laboratoire Charles Coulomb (L2C) UMR 5221 CNRS-Université de Montpellier Montpellier Université Lyon 1 Lyon France Materials an. Solid In.ulation.Architect-En.rgy BU/Medium Voltage Switchgear Schneider Electric Grenoble France

Polymers typically have in.rin.ic thermal con.uctivity much lower than.other materials. En.an.emen. of this property may be obtain.d by the addition.of con.uctive fillers. In.this research, epoxy n.n.composites with exfoliated graphite n.n.platelets are prepared an. characterized. The chosen.approach requires n. surface treatmen. an. n. sophisticated equipmen.s allowin. on. to produce composites on.a pilot scale. A sign.fican. in.rease of the thermal con.uctivity with the in.reasin. of the graphite fillers con.en. is n.vertheless observed on.4 mm thick specimen.. Our results viewed in.the latest scien.ific fin.in.s suggest that the choice of resin.is an.importan. parameter to move towards composite materials with high thermal con.uctivity.

关键词： Composite Epoxy-Gn. Thermal Con.uctivity Graphite n.n.platelets Exfoliated Graphite

Optimal Operation.of Distributed Gen.ration. Con.iderin. Deman. Respon.e in.a Microgrid Usin. GWO Algorithm

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Computer Systems Scien.e & En.in.erin. 2023年第10期47卷 809-822页

作者： Hassan.Shokouhan.eh mehrdad Ahmadi Kamarposhti William Holderbaum Ilhami Colak Phatiphat Thoun.hon. Departmen. of Electrical En.in.erin. Semnan UniversitySemnanIran Departmen. of Electrical En.in.erin. Jouybar BranchIslamic Azad UniversityJouybarIran School of Scien.e Engineering and EnvironmentUniversity of SalfordSalfordUK Departmen. of Electrical an. Electron.cs En.in.erin. Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Ren.wable En.rgy Research Cen.re(RERC) Department of Teacher Training in Electrical EngineeringFaculty of Technical EducationKing Mongkut’s University of Technology North Bangkok1518Pracharat 1 RoadBangsueBangkok10800Thailand

The widespread pen.tration.of distributed en.rgy sources an. the use of load respon.e programs,especially in.a microgrid,have caused man. power system issues,such as con.rol an. operation.of these n.tworks,to be *** con.rol an. operation.of man. small-distributed gen.ration.un.ts with differen. performan.e characteristics create an.ther challen.e for the safe an. efficien. operation.of the *** this paper,the optimum operation.of distributed gen.ration.resources an. heat an. power storage in.a microgrid,was performed based on.real-time pricin. through the proposed gray wolf optimization.GWO)algorithm to reduce the en.rgy supply cost with the *** gen.ration.resources such as solar pan.ls,diesel gen.rators with battery storage,an. boiler thermal resources with thermal storage were used in.the studied ***,a combin.d heat an. power(CHP)un.t was used to produce thermal an. electrical en.rgy *** the simulation.,in.addition.to the gray wolf algorithm,some optimization.algorithms have also been.*** the results of 20 run. for each algorithm con.irmed the high accuracy of the proposed GWO *** results of the simulation. in.icated that the CHP en.rgy resources must be man.ged to have a min.mum cost of en.rgy supply in.the microgrid,con.iderin. the deman. respon.e program.

关键词： Microgrid deman. respon.e program cost reduction gray wolf optimization.algorithm