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Improving TC drill bit's efficiency and resistance to wear by graphene coating

Petroleum Research 2022年第4期7卷 430-436页

作者： Reza Taheri mohsen jalali Ahmed Al-Yaseri George Yabesh Petroleum Engineering Department University of WyomingWYUSA Petroleum Engineering Department Tehran Azad UniversityTehranIran Petroleum Engineering Discipline Engineering SchoolEdith Cowan UniversityAustralia

Displaying a two-dimensional pure crystal carbon structure,Graphene is the strongest,yet thinnest substance discovered by *** tungsten carbide(TC)drill bits with graphene to evaluate the effect of graphene on the wear,as well as the rate of penetration of the drilling bit was examined in this *** evaluation approaches were employed:one with employing ANSYS Software and the second by employing atomic pressure chemical vapor deposition(APCVD synthesis)in the laboratory to produce a monolayer graphene *** simultaneous software-based and lab-based testing were performed to increase the credibility of the results and minimize the potential *** the simulation using ANSYS,the maximum shear elastic strain,equivalent elastic strain,equivalent(von mises)stress,total deformation and maximum shear stress were investigated prior and after the gra-phene coating was applied on TC simulated *** deformation was only slightly increased,while the maximum shear elastic strain was almost doubled,reflecting that the bit's wear was significantly reduced after the ***-based APCVD synthesis results showed 34%increase in compressive strength of the coated bit,in comparison to the uncoated *** failure occurred for uncoated bit at 35 MPa,where the coated bit experienced failure at 46.9 *** Von Mises stress test conducted on the coated and uncoated samples also indicated that this stress was 41%less for the coated bit,in comparison to the uncoated ***,two small-scale drilling operations,one using a 1inch graphene-coated TC bit and the other using a 1inch non-coated TC bit,were performed on a granite block,to evaluate the performance of the graphene-coated bit in *** a chosen 120-min time frame,27 consecutive holes could be drilled by the graphene-coated TC bit,while 19 consecutive holes could be drilled by the uncoated TC bit,in identical drilling *** implies a 42%increase in ROP.

关键词： Drill bit's efficiency Graphene-coated ANSYS APCVD Wear reduction Penetration rate

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Assessment of mobile and potential mobile trace elements extractability in calcareous soils using different extracting agents

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Frontiers of Environmental Science & Engineering 2020年第1期14卷 109-125页

作者： mohsen jalali Ziba Hurseresht Department of Soil Science College of AgricultureBu_Ali Sina UniversityHamedanIran

Understanding trace elements mobility in soils,extracting agents,and their relationships with soil components,are essential for predicting their movement in soil profile and availability to plants.A laboratory study was conducted to evaluate extractability of cadmium(Cd),cobalt(Co),copper(Cu),nickel(Ni),and zinc(Zn)from calcareous soils utilizing various extracting agents to be specific CaCU,DTPA,EDTA,HNO3,MgCl2,NaN03,NH4NO3,and *** analysis indicated that DTPA and NH4OAc,HN03 and EDTA,and M gCl2 and NH4NO3 extracting agents yielded comparative values,whereas NaN03 and CaCl2 have shown different behavior than other extracting agents for all studied trace *** speciationof extracted trace elements in solutions indicated that in the CaCl2,NaN03,NH4NO3,and MgCl2 extracting agents most extracted Cd,Co,Ni,Zn,and part f Cu were as free ions and may be re-adsorbed on soils,leading to lower extractability,whereas,in the caseof HNO3 extracting agent,the likelihoodof re-adsorptionof trace elements may be *** resultsof speciationof trace elements using NH4OAc DTPA,and EDTA extracting agents showed that Me-(Acetate)3,Me-(Acetate)2(aq),Me(DTPA)3-3-,Me(EDTA)2-.and MeH(EDTA)-complexes dominated in solutions indicating that the extracted trace elements may not be re-adsorbed on soils,leading to higher *** resultsof this study are useful for short and long-term evaluationsof trace elements mobility and further environmental impacts.

关键词： Mobility Calcareous soils Extracting agents Trace elements

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Heavy Metal Release from Some Industrial Wastes: Influence of Organic and Inorganic Acids, Clay Minerals, and Nanoparticles

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Pedosphere 2018年第1期28卷 70-83页

作者： Marzieh TAGHIPOUR mohsen jalali Department of Soil Science College of Agriculture Bu-Ali Sina University

Knowledge about heavy metal release from industrial solid wastes(ISWs) is crucial for better management of their environmental risks. This study was conducted to investigate the effect of organic and inorganic acids, clay minerals, and nanoparticles(NPs) on the release of heavy metals from sugar factory waste, ceramic factory waste, leather factory waste, and stone cutting waste. The influence of the extractants on heavy metal release from these ISWs was in the following descending order: citric acid > oxalic acid > nitric acid≥ sulfuric acid > Ca Cl2. Addition of clay minerals and NPs as adsorbents decreased heavy metal release, which was significantly lower in NP-treated wastes than in the clay mineral-treated wastes. On the other hand, the presence of organic and inorganic acids increased heavy metal adsorption by NPs and clay minerals. These results suggest that NPs can be applied successfully in waste remediation,and organic and inorganic acids play an important role in the removal of heavy metals from the studied adsorbents.

关键词：重金属吸附工业废物矿物质版本器官无机环境风险吸附物

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CFTR mutations causing congenital unilateral absence of the vas deferens(CUAVD)and congenital absence of the uterus(CAU)in a consanguineous family

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Asian Journal of Andrology 2022年第4期24卷 416-421页

作者： Mahdieh Daliri Ghouchanatigh Ranjha Khan Majid Mojarrad Uzma Hameed Muhammad Zubair Ahmed Waqas mohsen jalali Mahmoudreza Kalantari Ali Shamsa Huan Zhang Qing-Hua Shi The First Affiliated Hospital of USTC Hefei National Laboratory for Physical Sciences at the MicroscaleSchool of Life SciencesCAS Center for Excellence in Molecular Cell ScienceUniversity of Science and Technology of ChinaCollaborative Innovation Center of Genetics and DevelopmentHefei 230027China Department of Medical Genetics School of MedicineMashhad University of Medical SciencesMashhad 91735Iran Institute of Industrial Biotechnology Government College UniversityLahore 54000Pakistan Department of Zoology Division of Science and TechnologyUniversity of Education LahoreMultan CampusMultan 60000Pakistan Department of Reproductive Medicine Armaghan Infertility CenterMashhad 91735Iran Department of Pathology Mashhad University of Medical SciencesMashhad 91735Iran.

Cystic fibrosis(CF)is one of the most common recessive genetic diseases,with a wide spectrum of phenotypes,ranging from infertility to severe pulmonary *** in the cystic fibrosis transmembrane conductance regulator(CFTR)gene are considered the main genetic cause for *** this study,we recruited a consanguineous Iranian pedigree with four male patients diagnosed with congenital unilateral absence of the vas deferens(CUAVD),and one female patient diagnosed with congenital absence of the uterus(CAU).Testicular biopsy of one patient was performed,and hematoxylin and eosin(H and E)staining of testis sections displayed the presence of germ cell types ranging from spermatogonia to mature spermatids,indicating obstructive *** explore the underlying genetic factor in this familial disorder,we therefore performed whole-exome sequencing(WES)on all available family *** data filtration and CFTR haplotype analysis identified compound heterozygous mutations in CFTR among four patients(two CUAVD patients carried p.H949Y and p.L997F,and one CUAVD and the female CAU patient carried p.H949Y and p.I148T).All these mutations were predicted to be deleterious by at least half of the prediction software programs and were confirmed by Sanger *** study reported that CFTR compound heterozygous mutations in a consanguineous Iranian family cause infertility in both sexes.

关键词： congenital absence of the uterus congenital unilateral absence of the vas deferens cystic fibrosis transmembrane conductance regulator whole-exome sequencing

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Position dependent circuit model for thin avalanche photodiodes

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Frontiers of Optoelectronics 2013年第2期6卷 194-198页

作者： Mohammad H. AKBARI mohsen jalali School of Engineering Shahed University Tehran *** Iran

This paper presents a circuit model for thin avalanche photodiodes （APDs）. In this model, the nonuniformity of the electric filed in the multiplication region is modeled using a stepwise method. The model also tries to take the effects of carrier＇s position dependent properties, like carder＇s dead length and the history of carder＇s previous ionization into account by developing an effective electric field in the multiplication region. The output photocurrent and multiplication gain obtained from the proposed model for different lengths of the multi- plication region achieve a good agreement in comparison with available experimental data. In addition, calculated excess noise factor reveals the model ability for noise and sensitivity analysis.

关键词： avalanche photodiode (APD) circuit model- ing multiplication gain nonuniform electric field excess noise factor

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Federated Learning Security and Privacy-Preserving Algorithm and Experiments Research Under Internet of Things Critical Infrastructure

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Tsinghua Science and Technology 2024年第2期29卷 400-414页

作者： Nasir Ahmad jalali Hongsong Chen Department of Computer Science University of Science and Technology Beijing(USTB)Beijing 100083China

The widespread use of the Internet of Things(IoTs)and the rapid development of artificial intelligence technologies have enabled applications to cross commercial and industrial band *** such systems,all participants related to commercial and industrial systems must communicate and generate ***,due to the small storage capacities of IoT devices,they are required to store and transfer the generated data to third-party entity called“cloud”,which creates one single point to store their ***,as the number of participants increases,the size of generated data also ***,such a centralized mechanism for data collection and exchange between participants is likely to face numerous challenges in terms of security,privacy,and *** address these challenges,Federated Learning(FL)has been proposed as a reasonable decentralizing approach,in which clients no longer need to transfer and store real data in the central ***,they only share updated training models that are trained over their private *** the same time,FL enables clients in distributed systems to share their machine learning models collaboratively without their training data,thus reducing data privacy and security ***,slow model training and the execution of additional unnecessary communication rounds may hinder FL applications from operating properly in a distributed ***,these unnecessary communication rounds make the system vulnerable to security and privacy issues,because irrelevant model updates are sent between clients and ***,in this work,we propose an algorithm for fully homomorphic encryption called Cheon-Kim-Kim-Song(CKKS)to encrypt model parameters for their local information privacy-preserving *** proposed solution uses the impetus term to speed up model convergence during the model training ***,it establishes a secure communication channel between IoT devices and the *** a

关键词： Federated Learning(FL) Internet of Things(IoTs) lightweight Transport Layer Security(iTLS) Cheon-Kim-Kim-Song(CKKS)

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Prediction of vertical displacement for a buried pipeline subjected to normal fault using a hybrid FEM-ANN approach

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 428-443页

作者： Hedye jalali Reza YEGANEH KHAKSAR Danial MOHAMMADZADEH S. Nader KARBALLAEEZADEH Amir H.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Technology University of Technology SydneyUltimoNSW 2007Australia University Research and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earthquakes is a geotechnical phenomenon threatening buried pipelines and with the potential to cause severe damage to critical ***,effective prediction of pipe displacement is crucial for preventive management *** study aims to develop a fast,hybrid model for predicting vertical displacement of pipe networks when they experience *** this study,the complex behavior of soil and a buried pipeline system subjected to a normal fault is analyzed by using an artificial neural network(ANN)to generate predictions the behavior of the soil when different parameters of it are *** this purpose,a finite element model is developed for a pipeline subjected to normal fault *** data bank used for training the ANN includes all the critical soil parameters(cohesion,internal friction angle,Young’s modulus,and faulting).Furthermore,a mathematical formula is presented,based on biases and weights of the ANN *** results show that the maximum error of the presented formula is 2.03%,which makes the proposed technique efficiently predict the vertical displacement of buried pipelines and hence,helps to optimize the upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element method multilayer perceptron neural network formulation

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用机械涂层技术在Ti-6Al-4V基体表面沉积HA/Ti复合涂层与功能梯度涂层的表征、磨损行为和生物相容性

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Transactions of Nonferrous Metals Society of China 2024年第2期34卷 547-559页

作者： Mahmood jalali BIDAKHAVIDI Hamid OMIDVAR Ali ZAMANIAN Jamshid AGHAZADEH MOHANDESI Hamid jalali Department of Materials and Metallurgical Engineering Amirkabir University of Technology(Tehran Polytechnic)Hafez AveP.O.Box 15875-4413TehranIran Department of Nanotechnology and Advanced Materials Materials and Energy Research CenterKarajIran School of Dentistry Tehran University of Medical SciencesTehranIran

采用机械涂层技术在Ti-6Al-4V基体表面沉积HA/Ti复合涂层与功能梯度涂层(FGC),对涂层进行表征,对比其磨损行为和生物相容性。制备复合涂层所用初始粉末为50%Ti(质量分数)和50%HA(质量分数)的混合粉末,而FGC分为两层,分别为75%Ti+25%HA和... 详细信息

采用机械涂层技术在Ti-6Al-4V基体表面沉积HA/Ti复合涂层与功能梯度涂层(FGC),对涂层进行表征,对比其磨损行为和生物相容性。制备复合涂层所用初始粉末为50%Ti(质量分数)和50%HA(质量分数)的混合粉末,而FGC分为两层,分别为75%Ti+25%HA和25%Ti+75%HA(质量分数)。XRD结果表明在沉积过程中没有发生相变。此外,由于原始混合粉末中存在Ti颗粒,在涂层和基体之间形成了结合良好的连续界面,特别是在功能梯度涂层样品中。磨损实验结果显示,非梯度复合涂层的摩擦因数约为0.37,在界面处发生突变,而功能梯度涂层的摩擦因数从0.32增加到0.5,在界面处发生平缓变化。磨损表面的SEM像表明涂层的主要磨损机制为磨粒磨损。生物相容性评价结果显示,FGC样品具有更好的细胞黏附和增殖能力。

关键词：机械涂层技术羟基磷灰石 Ti-6Al-4V基体功能梯度涂层摩擦因数

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Erratum to:Exciton recycling via InP quantum dot funnels for luminescent solar concentrators

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Nano Research 2024年第6期17卷 5756-5756页

作者： Houman Bahmani jalali Sadra Sadeghi Isinsu Baylam Mertcan Han Cleva W.Ow-Yang Alphan Sennaroglu Sedat Nizamoglu Graduate School of Biomedical Sciences and Engineering Koc UniversityIstanbul 34450Turkey Graduate School of Material Science and Engineering Koc UniversityIstanbul 34450Turkey Koc University Surface Science and Technology Center(KUYTAM) Koc UniversityIstanbul 34450Turkey Laser Research Laboratory Koc UniversityIstanbul 34450Turkey Department of Electrical and Electronics Engineering Koc UniversityIstanbul 34450Turkey Department of Material Science and Nano Engineering Sabanci UniversityIstanbul 34956Turkey

The article“Exciton recycling via InP quantum dot funnels for luminescent solar concentrators”written by Houman Bahmani jalali,Sadra Sadeghi,Isinsu Baylam,Mertcan Han,Cleva ***-Yang,Alphan Sennaroglu,and Sedat Nizamoglu,was originally published Online First without Open *** publication online first,the author decided to opt for Open Choice and to make the article an Open Access ***,the copyright of the article has been changed to©The Author(s)2020 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License(http://***/licenses/by/4.0/),which permits use,duplication,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons license,and indicate if changes were *** original article has been corrected.

关键词： quantum Open license

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Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

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Frontiers of Structural and Civil Engineering 2023年第10期17卷 1585-1598页

作者： Nooshin G.AMIRABAD Farshid J.ALAEE Meysam jalali Civil Engineering Department Shahrood University of TechnologyShahrood ***Iran

Fiber-reinforced polymers(FRPs)have received considerable research attention because of their high strength,corrosion resistance,and low ***,owing to the lack of ductility in this material and the quasi-brittle behavior of concrete,FRP-reinforced concrete(FRP-RC)beams,even with flexural failure,do not fail in a ductile *** the limited deformation capacity of FRP-RC beams depends on the ductility of their compression zones,the present study proposes using a precast confined concrete block(PCCB)in the compression zone to improve the ductility of the beams.A control beam and four beams with different PCCBs were cast and tested under four-point bending *** control beam failed due to shear,and the PCCBs exhibited different confinements and *** goal was to find an appropriate PCCB for use in the compression zone of the beams,which not only improved the ductility but also changed the failure mode of the beams from shear to *** the employed blocks,a ductile PCCB with low equivalent compressive strength increased the ductility ratio of the beam to twice that of the control *** beam failed in pure flexure with considerable deformation capacity and without significant stiffness reduction.

关键词： ductility four-point bending test glass fiber-reinforced polymer precast confined concrete block

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