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Transactions of Nonferrous Metals Society of China 2021年第1期31卷 74-91页

作者： Matin SAESSI Ali ALIZADEH alireza abdollahi Department of Composites Malek-Ashtar University of TechnologyTehranIran Department of Materials and Manufacturing Processes Malek-Ashtar University of TechnologyTehranIran Metallic Materials Research Center Malek-Ashtar University of TechnologyTehranIran

Tribological behavior and wear mechanisms of mechanically milled Al5083 alloy and Al5083−5wt.%B4C composite at room temperature and 200°C were *** revealed that due to the oxidative wear at room temperature,a mechanically mixed layer(MML)was formed to protect the surface of the *** 80 N of load at room temperature,the milled Al5083 and the Al5083−5wt.%B4C samples showed evidence of abrasion with limited volume *** this case,the wear rates were 5.8×10−7 and 4.4×10−7 mm3/(m·N),*** 200°C and under 80 N of applied load,severe wear occurred in the milled Al5083 sample,and wear rate reached 10.8×10−7 mm3/(m·N)while the Al5083−5wt.%B4C sample showed mild wear with local 3-body abrasion and the wear rate reached 5.3×10−7 mm3/(m·N).Strengthening mechanisms such as dislocation pinning and the Hall−Petch theory,high hardness and the load transfer effect were crucial in determining the wear behavior of the Al5083−5wt.%B4C *** the other hand,the milled Al5083 sample represented a relatively high wear rate at 200°C,which seemed to be related to the local grain growth and a drop in its hardness.

关键词： tribological behavior oxidative wear mechanically mixed layer wear rate Hall−Petch theory

Processing, characterization, room temperature mechanical properties and fracture behavior of hot extruded multi-scale B_4C reinforced 5083 aluminum alloy based composites

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Transactions of Nonferrous Metals Society of China 2017年第6期27卷 1233-1247页

作者： Ali ALIZADEH alireza abdollahi Mohammad Javd RADFAR Faculty of Materials & Manufacturing Processes Malek Ashtar University of Technology Faculty of Engineering South Tehran Branch Islamic Azad University

Microstructural characteristics and mechanical behavior of hot extruded Al5083/B4C nanocomposites were ***5083and Al5083/B4C powders were milled for50h under argon atmosphere in attrition mill with rotational speed of400r/*** increasing the elongation,milled powders were mixed with30%and50%unmilled aluminum powder(mass fraction)with meanparticle size of>100μm and100μm unmilled particles reduced the tensile strength and ductility at the same *** increasing the content of unmilledparticles failure mechanism changed from brittle to ductile.

关键词： Al5083 alloy metal matrix composite boron carbide multi-scale composite hot extrusion mechanical milling

A contrasting analysis of CO_(2) and N_(2) foam flood for enhanced oil recovery and geological storage of CO_(2)

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Petroleum Research 2024年第1期9卷 55-60页

作者： alireza Roozbahani Farshad Soofivan Ali Sagban Hassoon Al-Tameemi Hadi abdollahi Sogand Saatchi Abdolhamid Ansari Petroleum Engineering Department Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran School of Chemical and Petroleum Engineering Shiraz UniversityShirazIran School of Chemical and Petroleum Engineering Shiraz BranchIslamic Azad UniversityShirazIran Department of Petroleum Engineering Science and Research BranchAzad UniversityTehranIran Department of Chemistry and Chemical Engineering Rasht BranchIslamic Azad UniversityRashtIran Department of Petroleum Engineering Lamerd BranchIslamic Azad UniversityLamerdIran

Foam flooding using CO_(2)has emerged as a promising method for both enhanced oil recovery(EOR)and the storage of CO_(2)in geological *** study conducts a thorough analysis of the behavior of CO_(2)and N_(2)foams in bulk and porous media,utilizing bubble-scale analyses and foam flooding *** study compares the foamability and longevity of CO_(2)and N_(2)foams,with findings indicating that N_(2)foam bubbles tend to be smaller and less varied in size than CO_(2)foam bubbles,leading to increased foam ***,the study compares the half-lives of CO_(2)and N_(2)foams generated through sparging and winding methods,showing that N_(2)foam has half-lives 22 and 10 times greater than CO_(2)foam when produced using the sparging and winding methods,***,CO_(2)foam generated through the sparging method had a lower foaming volume than N_(2)foam due to CO_(2)'s *** the foam flooding experiments,N_(2)foam proved more effective in recovering oil from porous media than CO_(2)foam,thus demonstrating the effectiveness of the foam injection *** results offer valuable insights into the differing performance of N_(2)and CO_(2)foam floods for EOR and CO_(2)geological storage.

关键词： CO_(2) storage Foam flood Enhanced oil recovery N_(2) foam CO_(2) foam

Synchrony between Ovarian Function &Sleep in Polycystic Ovary Syndrome Patients

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Open Journal of Obstetrics and Gynecology 2014年第12期4卷 725-731页

作者： Farideh Zafari Zangeneh Mohammad Mehdi Naghizadeh alireza abdollahi Maryam Bagheri Department of Community Medicine Medical Faculty Fasa University of Medical Sciences Fasa Iran Pathology Laboratory Vali-e-Asr Hospital Tehran University of Medical Sciences Tehran Iran Reproductive Health Research Center Tehran University of Medical Sciences Tehran Iran

Polycystic ovary syndrome (PCOS) is a complex, multifaceted, heterogeneous disorder, affecting 4% to 18% of reproductive-aged women and is associated with reproductive, metabolic and psychological dysfunction. In this study we determined the relationship between the time to sleep and serum levels of neurohormones in polycystic ovary syndrome (PCOS). Totally 77 PCO patients(case group) and 97 non-PCOS infertile women (control subjects) participated in this study between February 2012 and February 2013. A PSQI sleep questionnaire was completed by each patient in both groups. PSQI sleep questionnaire score and serum concentration of adrenaline, noradrenaline, melatonin, β-endorphin, cortisol and progesterone were compared in two groups. The results of the study indicate that serum levels of melatonin and β-endorphin were lower in women with PCOS. Serum level of stress hormones, adrenaline and noradrenaline were significantly correlated with patients’ sleep time in study group. Serum level of adrenaline in control group was significantly lower in women who wake up earlier in the morning. All hormones except for cortisol had no significant correlation with PSQI global score in both groups and also the people who sleep less than 8 hours had lower cortisol level. These data showed that changes in cortisol in PCO women were due to damage of disturbed sleep at night. Our preliminary work provided this study with new insight into the interactions between sleep-wake cycles in PCO women with specific sleep patterns.

关键词： Polycystic Ovary Syndrome (PCOS) Sleep Stress Hormone β-Endorphin Melatonin

Fault detection of new and aged lithium-ion battery cells in electric vehicles

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Green Energy and Intelligent Transportation 2024年第3期3卷 42-53页

作者： Sara Sepasiahooyi Farzaneh abdollahi Department of Electrical Engineering Amirkabir University of Technology(Tehran Polytechnic)424 Hafez AveTehranIran Department of Mechanical Engineering Texas Tech UniversityLubbockTXUSA Department of Mechanical and Aerospace Engineering Carleton UniversityOttawaONCanada

In this paper,a novel model-based fault detection in the battery management system of an electric vehicle is *** adaptive observers are designed to detect state-of-charge faults and voltage sensor faults,considering the impact of battery *** aging primarily affects capacity and resistance,becoming more pronounced in the later stages of a battery *** incorporating aging effects into our fault diagnosis scheme,our proposed approach prevents false or missed alarms for the aged battery *** aging effect of battery,capacity fading and resistance growth,are considered unknown *** adaptive observer is employed to design a fault detector,considering unknown parameters in the battery *** adaptive observers are designed for two different scenarios:In the first scenario,it is presumed that aging effects remain constant over time due to their slow rate of ***,it is assumed that aging effects are ***,the fault detection scheme can detect faults of new battery cells as well as aged *** simulations have been conducted on a Lithium-ion battery cell and extended to battery pack,to demonstrate the performance of the proposed approach in more real-world *** results showed that the designed observers can detect faults correctly in a seven years old battery as well as a new one.

关键词： Adaptive observer Aging Electric vehicle Fault detection Lithium-ion battery State of charge

Resternotomy Following Sternal Bone Cement Implantation: A Great Challenge for Cardiac Surgeons

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Journal of Biosciences and Medicines 2015年第11期3卷 77-81页

作者： Aliasghar Moeinipour alireza Sepehri Shamloo alireza abdollahi Moghadam Mohammad Sobhan Sheikh Andalibi Ahmad Reza Zarifian Hamid Hoseinikhah Atherosclerosis Prevention Research Center Imam Reza Hospital Mashhad University of Medical Sciences Mashhad Iran Student Research Committee Mashhad University of Medical Sciences Mashhad Iran

Background: Median sternotomy and resternotomy is the standard technique for coronary artery bypass grafting (CABG), valvular heart disease, and congenital heart disease. Despite ad-vances in many areas of cardiac surgical procedures, there is a lack of innovation in sternal closure techniques. Several studies have examined sternal closure techniques including wiring, interlocking, plate and screw, and bone cementation. However, none of them achieved widespread acceptability. On one hand, serious post-operative complications are associated with the use of wiring and plating techniques in high-risk patients. The aim of this study is showing challenges and difficulties with resternotomy in patient with a history of previous cardiac surgery and usage of biologic bone cements. Case Report: The case was a 56-year-old woman with a history of previous sternotomy for mitral and aortic valve replacement (mechanical sj. No. 29 and mechanical sj. No. 21, respectively) using biologic bone cement (Kryptonite TM, Doctors Research Group Inc.) for her osteopenic sternum. Four years after the mitral valve replacement (MVR), she was referred to emergency department with a thrombosis at the mitral valve. She under-went emergent cardiac surgery with a very difficult resternotomy under femoral cannulation support. Conclusion: Resternotomy in patients with previous sternotomy with Kryptonite bone cements or calcium phosphate cements (CPC) is safe and can be done similar to other cardiac reoperations. It seems that reoperation in this patients does not increase the risk of bleeding, morbidity, and mortality.

关键词： Kryptonite Sternal Bone Cement Resternotomy Cardiac Complication

White-box machine-learning models for accurate interfacial tension prediction in hydrogen-brine mixtures

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Clean Energy 2024年第5期8卷 252-264页

作者： Qichao Lv Jinglei Xue Xiaochen Li Farzaneh Rezaei Aydin Larestani Saeid Norouzi-Apourvari Hadi abdollahi Abdolhossein Hemmati-Sarapardeh College of Carbon Neutral Energy China University of Petroleum(Beijing)BeijingChina Unconventional Petroleum Research Institute China University of Petroleum(Beijing)BeijingChina CNPC Bohai Drilling Engineering Company Limited TianjinChina Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Department of Petroleum Engineering Shahid Bahonar University of KermanKermanIran

The severity of climate change and global warming necessitates the need for a transition from traditional hydrocarbon-based energy sources to renewable energy *** intrinsic challenge with renewable energy sources is their intermittent nature,which can be addressed by transforming excess energy into hydrogen and storing it safely for future *** securely store hydrogen underground,a comprehensive knowledge of the interactions between hydrogen and residing fluids is *** tension is an important variable influenced by cushion gases such as CO_(2) and *** research developed explicit correlations for approximating the interfacial tension of a hydrogen–brine mixture using two advanced machine-learning techniques:gene expression programming and the group method of data *** interfacial tension of a hydrogen–brine mixture was considered to be heavily influenced by temperature,pressure,water salinity,and the average critical temperature of the gas *** results indicated a higher performance of the group method of data handling-based correlation,showing an average absolute relative error of 4.53%.Subsequently,Pearson,Spearman,and Kendall methods were used to assess the influence of individual input variables on the outputs of the *** showed that the temperature and the average critical temperature of the gas mixture had considerable inverse impacts on the estimated interfacial tension ***,the reliability of the gathered databank and the scope of application for the proposed correlations were verified using the leverage approach by illustrating 97.6%of the gathered data within the valid range of the Williams plot.

关键词： underground hydrogen storage interfacial tension cushion gas correlation gene expression programming group method of data handling

Effect of age on the standardized ileal amino acid digestibility of soybean meal and canola meal in broilers

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Animal Nutrition 2024年第1期16卷 11-22页

作者： Mukti Barua M.Reza abdollahi Faegheh Zaefarian Timothy J.Wester Channarayapatna K.Girish Peter V.Chrystal Velmurugu Ravindran Monogastric Research Center School of Agriculture and EnvironmentMassey UniversityPalmerston North 4442New Zealand Department of Animal Science and Nutrition Faculty of Veterinary MedicineChattogram Veterinary and Animal Sciences UniversityKhulshiChattogram 4225Bangladesh Nutrition and Care Animal NutritionEvonik(SEA)Pte.Ltd609927 Singapore Complete Feed Solutions Howick 2145AucklandNew Zealand

Standardized ileal digestibility coefficients(SIDC)of nitrogen(N)and amino acids(AA)in two protein sources(soybean meal[SBM]and canola meal[CM])were investigated at six broiler ages(d 7,14,21,28,35,and 42).Two assay diets were formulated to contain either SBM(413 g/kg)or CM(553 g/kg)as the sole dietary AA *** dioxide(5 g/kg)was added as an indigestible marker.A total of 696 male broilers at 1 d old were allotted to 12 replicate cages per age *** assay diet was offered to birds for 4 d prior to the ileal digesta collection on d 7(14 birds/cage),14(12 birds/cage),21(10 birds/cage),28(8 birds/cage),35(8 birds/cage)and 42(6 birds/cage),*** apparent digestibility coefficients were standardized using age-specific basal endogenous AA *** the SBM group,though the SIDC of N tended to be influenced(quadratic;P=0.075)by age,no linear or quadratic response of age effect was observed on the average SIDC of indispensable(IAA)and total AA(TAA).An age effect(quadratic;P<0.05)was observed on the average SIDC of dispensable AA(DAA)in SBM with the highest value recorded at d 7,followed by a decrease from d 14 to 28,which increased beyond d *** SIDC of some individual AA(Arg,Thr,Trp,Cys,Pro)were affected(P<0.05 or P<0.001)in a quadratic manner by *** the CM,the SIDC of N,average SIDC of IAA,DAA and TAA were influenced(quadratic;P<0.05 or P<0.001)by *** SIDC of N and average SIDC of DAA and TAA were higher from d 7 to 14,declined at d 21,and then increased beyond d *** average SIDC of IAA was low between d 7 and 28 and increased *** SIDC of individual AA were affected(linear or quadratic;P<0.05 or P<0.001)by different magnitudes by *** age influence on the SIDC AA was variable,depending on the protein source and *** results demonstrate that age-specific SIDC AA data might need consideration in broiler feed formulations.

关键词： Age Amino acid Broiler Digestibility Protein source

Isoimperatorin alleviates acetic acid-induced colitis in rats

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Asian Pacific Journal of Tropical Biomedicine 2024年第4期14卷 147-153页

作者： Saied Goodarzi Amir Hossein Abdolghaffari Behnaz Najafi Mostafa Pirali Hamedani Saeed Tavakoli Mahshad Marvi Maryam Baeeri Narguess Yassa Abbas Hadjiakhoondi Mohammad abdollahi Zahra Tofighi Medicinal Plants Research Center Faculty of PharmacyTehran University of Medical SciencesTehranIran Department of Toxicology and Pharmacology Faculty of PharmacyTehran Medical SciencesIslamic Azad UniversityTehranIran Department of Pharmacognosy Faculty of PharmacyTehran University of Medical SciencesTehranIran Medicinal Plants Research Center Institute of Medicinal PlantsACECRKarajIran International Campus School of Pharmacy Tehran University of Medical SciencesTehranIran Toxicology and Diseases group The Pharmaceutical Sciences Research CenterTehran University of Medical SciencesTehranIran Department of Toxicology and Pharmacology Faculty of PharmacyTehran University of Medical SciencesTehranIran

Objective:To investigate the effect of isoimperatorin on histopathological and biochemical changes in acetic acid-induced colitis ***:Colitis was induced by intracolonic administration of acetic acid solution(4%v/v)in *** were divided into six groups including the sham group,the negative control group,the dexamethasone-treated group,and the groups treated with isoimperatorin(0.1,1,and 10 mg/kg/d by gavage).The treatments were administered for three days and then colonic status was assessed by macroscopic,histopathological,and biochemical ***:Isoimperatorin significantly alleviated colonic damage in a dose-dependent manner and improved histological changes in rats with acetic acid-induced *** also significantly reduced myeloperoxidase,TNF-α,IL-1β,and malodialdehyde ***:Isoimperatorin alleviates acetic acid-induced colitis in rats and may be a potential therapeutic agent for the treatment of colitis.

关键词： Isoimperatorin Inflammatory bowel disease Acetic acid Colitis TNF-α IL-1β

Modeling industrial thickener using computational fluid dynamics(CFD),a case study:Tailing thickener in the Sarcheshmeh copper mine

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International Journal of Mining Science and Technology 2013年第6期23卷 885-892页

作者： Majid Ebrahimzadeh Gheshlaghi Ataallah Soltani Goharrizi alireza Aghajani Shahrivar Hadi abdollahi Department of Chemical Engineering College of EngineeringShahid Bahonar University of Kerman Mineral Processing Division Faculty of Mining EngineeringUniversity of Tehran

Separation of particles from liquid in the large gravitational tanks is widely used in mining and industrial wastewater treatment *** is key unit in the operational processes of hydrometallurgy and is used to separate solid from *** this study,population balance models were combined with computational fluid dynamics(CFD)for modeling the tailing *** such as feed flow rate,flocculant dosage,inlet solid percent and feedwell were *** was used to simulate the industrial tailing thickener with settled bed of 120 m diameter which is located in the Sarcheshmeh copper *** factor of drag force that defines the rake torque of rotating paddles on the bed was also *** phases turbulence model of Eulerian/Eulerian in accordance with turbulence model ofκ-ε.was used in the *** population balance model consists of 15 groups of particle sizes with Luo and Lehr kernel was used for aggregation/breakage *** simulation results showed good agreement with the operational data.

关键词： Thickener Feedwell Modeling Solid percent Rake Torque