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Improvement of the microstructural features and mechanical properties of advanced high-strength steel DP590 welds

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International Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 1022-1029页

作者： Arian Ghandi Morteza Shamanian Mohamad Reza Salmani jalal Kangazian College of Pardis Materials Engineering SectionIsfahan University of TechnologyIsfahan 84156-83111Iran Department of Materials Engineering Isfahan University of TechnologyIsfahan 84156-83111Iran Engineering&Quality of Auto Steel Division SAIPA GroupTehranIran

The effects of the welding current mode in resistance spot welding on the microstructure and mechanical properties of advanced high-strength steel dual-phase 590(DP590)sheets were *** showed that a rough martensitic structure was formed in the weld zone of the sample welded via the single-pulsed mode,whereas the microstructure in the heat-affected zone consisted of a very rough martensitic microstructure and rough ***,using the secondary pulse mode led to the formation of tempered martensite in the weld *** maximum load and the energy absorption to failure of the samples with the secondary pulsed cycle were higher than those of the samples with the single-pulsed *** shear results indicated that the secondary pulsed mode could significantly change the mode of failure upon shear tension ***,the obtained results suggest that the use of secondary pulsed mode can improve the microstructural feature and mechanical properties of advanced high-strength steel DP590 welds.

关键词： advanced high-strength steel resistance spot welding microstructure mechanical properties

Local vs. cross station simulation of suspended sediment load in successive hydrometric stations: heuristic modeling approach

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Journal of Mountain Science 2016年第10期13卷 1773-1788页

作者： Kiyoumars ROUSHANGAR Shabnam HOSSEINZADEH jalal SHIRI Department of Civil Hydraulics Engineering Faulty of Civil Engineering University of Tabriz Department of Water Engineering Faculty of Agriculture University of Tabriz

The present paper aims at modeling suspended sediment load(SSL) using heuristic data driven methodologies, e.g. Gene Expression Programming(GEP) and Support Vector Machine(SVM) in three successive hydrometric stations of Housatonic River in U.S. The simulations were carried out through local and cross-station data management scenarios to investigate the interrelations between the SSL values of upstream/downstream stations. The available scenarios were applied to predict SSL values using GEP to obtain the best models. Then, the best models were predicted by SVM approach and the obtained results were compared with those of GEP. The comparison of the results revealed that the SVM technique is more capable than the GEP for modeling the SSL through the both local and cross-station data management strategies. Besides, local application seems to be better than cross-station application for modeling SSL. Nevertheless, the cross-station application demonstrated to be a valid methodology for simulating SSL, which would be of interest for the stations with lack of observational data. Also, the prediction capability of conventional Sediment Rating Curve(SRC) method was compared with those of GEPand SVM techniques. The obtained results revealed the superiority of GEP and SVM-based models over the traditional SRC technique in the studied stations.

关键词： Suspended sediment load Successive hydrometric stations Gene expression programming Support vector machine

CuO–CeO_2 nanocomposite: A highly efficient recyclable catalyst for the multicomponent synthesis of 4H-benzo[b]pyran derivatives

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Chinese Chemical Letters 2013年第9期24卷 821-824页

作者： jalal Albadi Azam Mansournezhad Zahra Derakhshandeh College of Science Behbahan Khatam Alanbia University of Technology Department of Chemistry Gachsaran Branch Islamic Azad University Department of Chemistry Omidieh Branch Islamic Azad University

CoO-CeO2 is reported as a highly efficient and green recyclable catalyst, for the multicomponent synthesis of 4H-benzo[b]pyran derivatives. The catalyst was synthesized by a co-precipitation method and characterized by XRD, BET specific surface area, ESEM and EDS analysis. This synthetic method provides several advantages such as simple work-up procedures, minimal amount of waste generated, short reaction time, and high yields of products.

关键词： CuO-CeO2 nanocomposite 4H-Benzo[b]pyran 3-Methyl-l-phenyl-2-pyrazoline-5-oneAldehydeMalononitrile

Regioselective iodination of aromatic compounds with potassium iodide in the presence of benzyltriphenylphosphonium perchlorate

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Chinese Chemical Letters 2012年第3期23卷 261-264页

作者： jalal Albadi Masoumeh Abedini Nasir Iravani Young Research Club Gachsaran branchIslamic Azad UniversityGachsaranIran Department of Chemistry College of ScienceUniversity of GuilanRashtIran

A simple and efficient method for the selective iodination of various aromatic compounds by using potassium iodide in the presence of benzyltnphenylphosphonium perchlorate,is *** method provides several advantages suc... 详细信息

关键词： Benzyl triphenylphosphonium perchlorate lodination Aromatic compound Potassium iodide

From basic researches to new achievements in therapeutic strategies of KRAS-driven cancers

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Cancer Biology & Medicine 2019年第3期16卷 435-461页

作者： Mahsa Saliani Razieh jalal Mohammad Reza Ahmadian Department of Chemistry Faculty of ScienceFerdowsi University of MashhadMashhad***Iran Department ofResearch Cell and Molecular Biology Institute of BiotechnologyFerdowsi University of MashhadMashhad***Iran Institute of Biochemistry and Molecular Biology II Medical FacultyHeinrich-Heine UniversityDüsseldorf40225Germany

Among the numerous oncogenes involved in human cancers, KRAS represents the most studied and best characterized cancerrelated *** therapeutic strategies targeting oncogenic KRAS(KRASonc) signaling pathways have been suggested,including the inhibition of synthetic lethal interactions, direct inhibition of KRASonc itself, blockade of downstream KRASonc effectors, prevention of post-translational KRASonc modifications, inhibition of the induced stem cell-like program, targeting of metabolic peculiarities, stimulation of the immune system, inhibition of inflammation, blockade of upstream signaling pathways,targeted RNA replacement, and oncogene-induced *** intensive and continuous efforts, KRASonc remains an elusive target for cancer *** highlight the progress to date, this review covers a collection of studies on therapeutic strategies for KRAS published from 1995 to *** overview of the path of progress from earlier to more recent insights highlight novel opportunities for clinical development towards KRASonc-signaling targeted therapeutics.

关键词： Direct inhibition downstream effectors oncogenic KRAS drug target sites small GTPases signal transduction targeting synthetic,lethal interactions therapeutic strategies

High-fidelity model to predict heat transfer enhancement for liquid film boiling on uniform micro-structured wicking surfaces

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National Science Review 2024年第6期11卷 93-95页

作者： Vishwanath Ganesan Mohammad jalal Inanlu Nenad Miljkovic Department of Mechanical Science and Engineering University of Illinois Urbana-Champaign Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign Materials Research Laboratory University of Illinois Urbana-Champaign International Institute for Carbon Neutral Energy Research (WPI-I2CNER) Kyushu University Institute for Sustainability Energy and Environment (iSEE)University of Illinois Urbana-Champaign

The field of thermal management in highpower electronic devices is a critical area of study, focusing on the efficient dissipation of heat to prevent device overheating and failure [1]. A key aspect of this field is understanding the dynamics of thin liquid film boiling, both on uniform and non-uniform micro-structured wicking surfaces, which can significantly enhance the heat transfer effectiveness[2].

关键词： structured predict micro liquid model boiling enhancement film heat high-fidelity

Embedding amorphous MoS_(x)within hierarchical porous carbon by facile one-pot synthesis for superior sodium ion storage

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Journal of Energy Chemistry 2022年第12期75卷 240-249,I0006页

作者： jalal Rahmatinejad Xudong Liu Ximeng Zhang Bahareh Raisi Zhibin Ye Department of Chemical and Materials Engineering Concordia UniversityMontrealQuebec H3G 1M8Canada

The design of anode materials with a high specific capacity,high cyclic stability,and superior rate performance is required for the practical applications of sodium-ion batteries(SIBs).In this regard,we introduce in this work a facile,low-cost and scalable method for the synthesis of nanocomposites of amorphous molybdenum sulfide(a-MoS_(x))and hierarchical porous carbon and have systematically investigated their performance for sodium ion *** the synthesis,ammonium molybdate tetrahydrate and thioacetamide are used as molybdenum and sulfur sources,respectively,with abundant corn starch as the carbon source and KOH as an activation agent.A simple pyrolysis of their mixtures leads to the formation of nanocomposites with a-MoS_(x)embedded within a hierarchical porous carbon(MoS_(x)@HPC),which are featured with a high surface area of up to 518.4 m^(2) g^(-1)and hierarchical pores ranging from micropores to *** has also been shown that the annealing of MoS_(x)@HPC results in the formation of crystalline MoS_(2)nanosheets anchored in the hierarchical porous carbon matrix(MoS_(2)@HPC).The as-prepared nanocomposite MoS_(x)@HPC1 at an optimum carbon content of 32 wt%delivers a high specific sodium storage capacity of 599 mAh g^(-1)at 0.2 A g^(-1)and a high-rate performa nce with a retained capacity of 289 mAh g^(-1)at 5 A g^(-1).A comparison of the electrochemical performances of MoS_(x)@HPC and MoS_(2)@HPC demonstrates the superior specific capacity,rate performance,and charge transfer kinetics of the former,highlighting the unique advantageous role of amorphous MoS_(x)relative to crystalline MoS_(2).

关键词： MoS_(x) Anode Sodium-ion battery Porous carbon Sodium ion storage

Melamine trisulfonic acid:A new,efficient and recyclable catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones in the absence of solvent

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Chinese Chemical Letters 2011年第3期22卷 318-321页

作者： Farhad Shirini Mohammad Ali Zolfigol jalal Albadi Department of Chemistry College of ScienceUniversity of GuilanRasht 41335Islamic Republic of Iran College of Chemistry Bu-Ali Sina UniversityHamadanIslamic Republic of Iran

Melamine trisulfonic acid（MTSA） can be used as an efficient and recyclable catalyst for the promotion of the synthesis of 3,4- dihydropyrimidin-2（1H）-ones/thiones（DHPMs） in the absence of *** reactions were perf... 详细信息

关键词： Melamine trisulfonic acid 3 4-Dihydropyrimidin-2(1H)-ones/thiones Biginelli reaction Aldehydes Solvent-free reactions

Pressure-rate convolution and deconvolution response for fractured conventional and unconventional reservoirs using new decline rate model

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Petroleum 2019年第3期5卷 243-251页

作者： Salam Al-Rbeawi jalal Farhan Owayed Middle East Technical University Northern Cyprus CampusKuwait Kuwait University Kuwait

This paper introduces new approach for pressure-rate convolution and deconvolution analysis of multi-stages hydraulically fractured conventional and unconventional *** approach demonstrates the impact of variable Sand face flow rate on reservoir performance.A new model for P/R deconvolution is used to convert pressure pulse from variable flow rate to single and constant rate *** target of this study is fractal reservoirs with and without stimulated and unstimulated reservoir ***-linear flow regimes approach is used to describe pressure behavior in the reservoirs while decline flow rate behavior is described by newly proposed model in this *** model depicts,instead of van Everdingen model,indirectly the declining rate with time by using pressure responses with production *** flow rate behavior simulated by linear and bi-linear flow models are also studied and compared with the one obtained by the new *** analytical models are used in this study by applying P/R convolution and deconvolution technique and solved for constant and variable flow rate considering different reservoir configurations and operating *** results are interpreted and analyzed for better understanding pressure behaviors,flow regime types,and productivity index trends for continuously changing flow rate especially at early production *** stimulated reservoir volume(Vsrv)is considered one of the applications of convolved pressure since it is calculated from pseudo-steady state flow when late time boundary dominated flow regime is *** outcomes of this study can be summarized as:1)Introducing new approach for pressure-rate convolution and deconvolution technique for multi-stages hydraulically fractured reservoirs by applying new decline flow rate model that indirectly simulates variable flow rate with time.2)Generating analytical models for dimensionless pressure and flow rate for constant and variable flow rate usin

关键词： Convolution and convolution technique Rate transient analysis Pressure transient analysis Fractured reservoirs Reservoir performance