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A state-of-the-art review of the fabrication and characteristics of titanium and its alloys for biomedical applications

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Bio-Design and Manufacturing 2022年第2期5卷 371-395页

作者： masoud Sarraf Erfan Rezvani Ghomi Saeid alipour Seeram Ramakrishna Nazatul Liana Sukiman Centre of Advanced Materials Department of Mechanical EngineeringFaculty of EngineeringUniversity of Malaya50603 Kuala LumpurMalaysia Department of Materials Science and Engineering Sharif University of TechnologyAzadi Ave.P.O.Box 11365‑9466TehranIran Center for Nanotechnology and Sustainability Department of Mechanical EngineeringNational University of SingaporeSingapore 117581Singapore

Commercially pure titanium and titanium alloys have been among the most commonly used materials for biomedical applications since the 1950 *** to the excellent mechanical tribological properties,corrosion resistance,biocompatibility,and antibacterial properties of titanium,it is getting much attention as a biomaterial for ***,titanium promotes osseointegration without any additional adhesives by physically bonding with the living bone at the implant *** properties are crucial for producing high-strength metallic alloys for biomedical *** alloys are manufactured into the three types ofα,β,andα+β.The scientific and clinical understanding of titanium and its potential applications,especially in the biomedical field,are still in the early *** review aims to establish a credible platform for the current and future roles of titanium in *** first explore the developmental history of ***,we review the recent advancement of the utility of titanium in diverse biomedical areas,its functional properties,mechanisms of biocompatibility,host tissue responses,and various relevant antimicrobial *** research will be directed toward advanced manufacturing technologies,such as powder-based additive manufacturing,electron beam melting and laser melting deposition,as well as analyzing the effects of alloying elements on the biocompatibility,corrosion resistance,and mechanical properties of ***,the role of titania nanotubes in regenerative medicine and nanomedicine applications,such as localized drug delivery system,immunomodulatory agents,antibacterial agents,and hemocompatibility,is investigated,and the paper concludes with the future outlook of titanium alloys as biomaterials.

关键词： Titanium and titanium alloys Biomedical application Functional properties Biocompatibility Antibacterial activity Advanced manufacturing

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Effect of 2-mercaptobenzothiazole concentration on sour-corrosion behavior of API X60 pipeline steel:Electrochemical parameters and adsorption mechanism

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 271-282页

作者： masoud Sabzi Amir Hayati Jozani Farzad Zeidvandi Majid Sadeghi Saeid Mersagh Dezfuli Young Researchers and Elite Club Dezful BranchIslamic Azad UniversityDezfulIran Department of Materials Science and Engineering Science and Research BranchIslamic Azad UniversityTehranIran Center of Excellence for Surface Engineering and Corrosion Protection of Industrial School of Metallurgy and Materials EngineeringCollege of EngineeringUniversity of TehranP.O.Box 11155-4563TehranIran

We investigated the effect of the 2-mercaptobenzothiazole concentration on the sour-corrosion behavior of API X60 pipeline steel in an environment containing H_(2)S at 25°C and in the presence of 0,2.5,5.0,7.5,and 10.0 g/L of 2-mercaptobenzothiazole *** examine this behavior,we conducted open-circuit potential(OCP),potentiodynamic polarization,and electrochemical impedance spectroscopy(EIS)*** dispersive spectroscopy and scanning electron microscopy were also used to analyze the corrosion *** results of the OCP and potentiodynamic polarization tests revealed that 2-mercaptobenzothiazole reduces the speed of both the anodic and cathodic *** assessment of the Gibbs free energy of the inhibitor(△G_(ads)^(■))indicated that its value was less than-20 kJ·mol^(-1)and greater than-40 k J·mol^(-1).Therefore,the adsorption of 2-mercaptobenzothiazole onto the surface of the API X60 pipeline steel occurs both physically and chemically,the latter of which is particularly *** addition,as the△G_(ads)^(■)dsvalue was negative,we could conclude that the adsorption of 2-mercaptobenzothiazole onto the surface of the pipeline steel occurs *** EIS results indicate that with the increase in the 2-mercaptobenzothiazole inhibitor concentration,the corrosion resistance of API X60 steel *** analysis of the corrosion products revealed that iron sulfide compounds form on the *** summary,the results showed that an increase in the inhibitor concentration results in a decrease in the corrosion rate and an increase in inhibitory ***,we found that the 2-mercaptobenzothiazole adsorption process on the API X60 steel surfaces in an H2 S-containing environment follows the Langmuir adsorption isotherm and occurs spontaneously.

关键词： API X60 steel sour corrosion 2-mercaptobenzothiazole inhibitor concentration electrochemical parameters environments containing hydrogen sulfide

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Laser-assisted growth of hierarchically architectured 2D MoS2 crystals on metal substrate for potential energy applications

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International Journal of Extreme Manufacturing 2022年第4期4卷 235-244页

作者： Parvin Fathi-Hafshejani Jafar Orangi Majid Beidaghi masoud Mahjouri-Samani Department of Electrical and Computer Engineering Auburn UniversityAuburnAL 36849United States of America Department of Mechanical and Material Engineering Auburn UniversityAuburnAL 36849United States of America

Recently, there has been substantial interest in the large-scale synthesis of hierarchically architectured transition metal dichalcogenides and designing electrodes for energy conversion and storage applications such as electrocatalysis, rechargeable batteries, and supercapacitors. Here we report a novel hybrid laser-assisted micro/nanopatterning and sulfurization method for rapid manufacturing of hierarchically architectured molybdenum disulfide (MoS2) layers directly on molybdenum sheets. This laser surface structuring not only provides the ability to design specific micro/nanostructured patterns but also significantly enhances the crystal growth kinetics. Micro and nanoscale characterization methods are employed to study the morphological, structural, and atomistic characteristics of the formed crystals at various laser processing and crystal growth conditions. To compare the performance characteristics of the laser-structured and unstructured samples, Li-ion battery cells are fabricated and their energy storage capacity is measured. The hierarchically architectured MoS2 crystals show higher performance with specific capacities of about 10 mAh cm-2, at a current rate of 0.1 mA cm-2. This rapid laser patterning and growth of 2D materials directly on conductive sheets may enable the future large-scale and roll-to-roll manufacturing of energy and sensing devices.

关键词： 2D materials laser manufacturing laser patterning energy applications Li-ion battery

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Optimal Synthesis of the Stephenson-Ⅱ Linkage for Finger Exoskeleton Using Swarm-based Optimization algorithms

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Journal of Bionic Engineering 2023年第4期20卷 1569-1584页

作者： Seyyed Mojtaba Varedi-Koulaei masoud Mohammadi Mohammad Amin Malek Mohammadi Mahdi Bamdad Corrective Exercise and Rehabilitation Laboratory Department of Mechanical EngineeringShahrood University of TechnologyShahrood***Iran Department of Health Science and Technology Aalborg University9220AalborgDenmark

Active exoskeletons have been widely investigated to supplement and restore human hand movements,but a significant limitation is that they have a complicated design requiring multi *** Degree-Of-Freedom(DOF)planar linkage mechanisms could be used with simple *** research represents the design and optimization of a mechanism proposed for a finger exoskeleton bionic *** DOF six-bar linkage Stephenson-II is selected,and a motion-generation mechanism synthesis problem is *** design is based on the data obtained from the flexion/extension motion of the index finger through 16 precision points and 16 angles for each phalange associated with the fingertip *** explaining the kinematic analysis of the Stephenson-II,an evaluation of swarm intelligence techniques,including PSO,GWO,and ARO algorithms for solving optimization problems,is *** algorithm demonstrates the best performance among ***,the optimized mechanism in this study has a 50% error reduction compared to the one previously designed(Bataller et *** Mech Mach Theory 105:31-43,2016).

关键词： Mechanism synthesis Bionic Finger exoskeleton PSO GWO ARO

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Distributed optimization with Markovian switching targets and stochastic observation noises with applications to DC microgrids

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Science China(Information Sciences) 2022年第12期65卷 232-247页

作者： Siyu XIE Leyi WANG masoud H.NAZARI George YIN Gun LI School of Aeronautics and Astronautics University of Electronic Science and Technology of China Department of Electrical and Computer Engineering Wayne State University Department of Mathematics University of Connecticut

A distributed optimization problem with Markovian switching targets and stochastic observation noises is considered in this paper. In order to solve target following and renewable following for microgrid(MG) optimal power balancing, and to attenuate observation noises simultaneously, distributed optimization algorithms are developed. The interaction between observation noises and Markovian switching targets may introduce a fundamental tradeoff in reducing the optimization errors and choosing the step size. Furthermore, under infrequent Markovian switching assumptions, the mean-square optimization error bounds, the switching ordinary differential equation(ODE) limit, and the asymptotic distributions of the optimization errors are established rigorously and comprehensively. A simulation example on a DC MG is presented to show the main results of the paper.

关键词： constraint optimization noisy observation output variation Markovian switching target distributed algorithm DC microgrid

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MCRO-PUF:A Novel Modified Crossover RO-PUF with an Ultra-Expanded CRP Space

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Computers, Materials & Continua 2023年第3期74卷 4831-4845页

作者： Hassan Rabiei masoud Kaveh Mohammad Reza Mosavi Diego Martín Department of Electrical Engineering Iran University of Science and TechnologyTehran13114-16846Iran Department of Communication and Networking Aalto UniversityEspoo00076Finland ETSI de Telecomunicación Universidad Politécnica de MadridAv.Complutense 30Madrid28040Spain

With the expanding use of the Internet of Things(IoT)devices and the connection of humans and devices to the Internet,the need to provide security in this field is constantly *** conventional cryptographic solutions need the IoT device to store secret keys in its non-volatile memory(NVM)leading the system to be vulnerable to physical *** addition,they are not appropriate for IoT applications due to their complex ***,physically unclonable functions(PUFs)have been introduced to simultaneously address these *** are lightweight and easy-toaccess hardware security primitives which employ the unique characteristics of integrated circuits(ICs)to generate secret *** all proposed PUFs,ring oscillator PUF(RO-PUF)has had amore suitable structure for hardware implementation because of its high reliability and easier providing of circuital ***,RO-PUF has not been so attractive for authentication purposes due to its limited supported challenge-response pairs(CRPs).A few efforts have been made in recent years that could successfully improve the RO-PUF CRP space,such as configurable RO-PUF(CRO-PUF).In this paper,by considerably improving the CRO-PUF structure and adding spare paths,we propose a novel strong RO-PUF structure that exponentially grows the CRP space and dramatically reduces the hardware *** implement our design on a simple and low-cost FPGA chip named XC6SLX9-2tqg144,stating that the proposed design can be used in IoT *** addition,to improve the CRP space,our design creates a suitable improvement in different security/performance terms of the generated responses,and dramatically outperforms the *** average reliability,uniqueness,and uniformity of the responses generated are 99.55%,48.49%,and 50.99%,respectively.

关键词： RO-PUF CRP space configurable design

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Microstructure and Corrosion Properties of CP-Ti Processed by Laser Powder Bed Fusion under Similar Energy Densities

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Acta Metallurgica Sinica(English Letters) 2022年第9期35卷 1453-1464页

作者： Mohammad Hossein Mosallanejad Saber Sanaei masoud Atapour Behzad Niroumand Luca Iuliano Abdollah Saboori Department of Materials Engineering Isfahan University of Technology84156-83111IsfahanIran Department of Applied Science and Technology Politecnico di TorinoCorso Duca Degli Abruzzi 2410129TorinoItaly Department of Management and Production Engineering Politecnico di TorinoCorso Duca Degli Abruzzi 2410129TorinoItaly

In this work, two types of CP Ti cubes with similar volumetric energy densities(VED) but diff erent process parameters were produced using laser powder bed fusion(LPBF) method. The corrosion behavior of the fabricated specimens was investigated by conducting electrochemical impedance spectroscopy(EIS) and polarization experiments in simulated body fl uid(SBF) solution at 37 °C. The results indicated that the microstructure and porosities, which are of great importance for biomedical applications, can be controlled by changing the process parameters even under constant energy densities. The sample produced with a lower laser power(E1) was featured with a higher level of porosity and thinner alpha laths, as compared with the sample fabricated with a higher laser power(E2). Moreover, results obtained from the bioactivity tests revealed that the sample produced with a higher laser power conferred a slight improvement in the bioactivity due to the higher amount of porosity. Lower laser power and hence higher porosity level promoted the formation of bone-like apatite on the surface of the printed specimens. The potentiodynamic polarization tests revealed inferior corrosion resistance for the fabricated sample with higher porosity. Moreover, the EIS results after diff erent immersion times indicated that a stable oxide film was formed on the surface of samples for all immersion times. After 1 and 3 days of immersion, superior passivation behavior was observed for the sample fabricated with lower laser power. However, very similar impedance and phase values were observed for all the samples after 14 days of immersion.

关键词： Additive manufacturing Laser powder bed fusion Energy density Corrosion Microstructure CP Titanium

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Personalized clinical managements through exploring circulating neural cells and electroencephalography

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World Journal of Experimental Medicine 2023年第4期13卷 75-94页

作者： Parvin Mehdipour Nima Fathi masoud Nosratabadi Department of Medical Genetics Tehran University of Medical SciencesTehran 14176-1315Iran Neuro-Science Paarand Specialized Center for Human EnhancementTehran 157699304Iran Department of Research Paarand Specialized Center for Human EnhancementTehran 157699304Iran

BACKGROUND Since an initial diagnosis of alzheimer disease(AD)in 1907,early detection,was unavailable through 116 ***-regulation of V-Ets erythroblastosis virus E26 oncogene homolog 2(Ets2)is capable to enhance neuronal susceptibility and *** expression(PE)of Ets2 has functional impact on AD and Down’s syndrome,with diverse *** of Ets2 has an influential pathogenic impact on *** aspects of neurological disorders directly interact with psychological ***,deterioration requires an early management including programmed based *** To include cell biology in neuro-genetics;personalized,prognostics,predictive,preventive,predisposing(5xP)platform,accompanied by stratifying brain channels behavior pre-and post-intervention by light music in the *** Include exploration of PE assay and electroencephalography of brain *** processes are applied according to:(1)Triangle style,by application of cellular network;and(2)PE assay of Ets2 in the peripheral blood of the patients with AD,by Manual single cell based analysis,and Flow-cytometry.(1)Applying the Genetic counselling and pedigree analysis;(2)considering the psychological status of the referral cases;(3)considering the macro-and/or micro-environmental factors;(4)performing the required Genetics’analysis;and(5)applying the required complementary test(s).RESULTS PE of Ets2 has pathogenic role in *** unmasked the nature of heterogeneity/diversity/course of evolution by exploring Ets2,D1853N polymorphism in Ataxia Telangiectasia mutated gene(ATM),vascular endothelial growth factor(VEGF),epidermal growth factor(EGF)and course of evolution at the single cell level of the ***2 revealed different cellular behavior in the blood and suggested the strategy as‘Gene Product-Based Therapy’and the personalized managements for the *** reflected weak expression of ATM,mosaic pattern of Ets2;remarkable expression of VEGF and EGF by highlighting

关键词： alzheimer Protein expression Brain channels Predictive/early detection

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Chemical treatment for sand production control:A review of materials,methods,and field operations

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Petroleum Science 2023年第3期20卷 1640-1658页

作者： ali Safaei Mohammad Asefi Mohsen Ahmadi Tayebe Pourshamsi Shima Baloochestanzadeh ali Khalilnezhad masoud Riazi Enhanced Oil Recovery(EOR)Research Centre IOR/EOR Research InstituteShiraz UniversityShirazIran Iran Food and Drug Administration(IFDA) Gerash University of Medical SciencesGerashIran Faculty of Petroleum and Natural Gas Engineering Sahand University of TechnologyTabrizIran

Sand production from loosely consolidated reservoirs is one of the critical issues in the oil and gas in-dustry all around the world that can cause many problems,such as erosion of surface and well equip-ment,sand accumulation in wells and operation facilities,buckling of casing in cased-hole wells and well productivity *** production control methods include restrictive production rate,mechanical methods(slotted liner,wire-wrapped screen,pre-packed screen,frac-pack,gravel pack,high-rate water pack)and chemical consolidation that chemical method is considered for more effectiveness in sand production alleviation due to increasing formation strength in near wellbore *** review provides an overview on the laboratory and filed operation investigations of chemical remedy for sand *** used chemical agents and more common laboratory tests for evaluating the chemical performance in sand consolidation are introduced in this ***,the results of field operations and in-jections of chemicals into the desired formation are also *** results show that the chemical sand consolidation is more effective in newly perforated wells which have no sand production experi-ence and have a production history of less than two ***,it was concluded that the main challenges in applying this method are permeability and capillary force reduction around the wellbore and selective injection into the targeted formation layers.

关键词： Sand production Loosely consolidated reservoirs Formation strength Chemical remedy Permeabilityreduction

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Efficacy of Curcumin on Cognitive Function Scores in Women with Premenstrual Syndrome and Dysmenorrhea: A Triple-Blind, Placebo-Controlled Clinical Trial

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Chinese Journal of Integrative Medicine 2023年第5期29卷 387-393页

作者： Afsane Bahrami Amir masoud Jafari-Nozad Samira Karbasi Malaksima Ayadilord Gordon A.Ferns Clinical Research Development Unit of Akbar Hospital Mashhad University of Medical SciencesMashhadIran Student Research Committee Birjand University of Medical SciencesBirjandIran Cardiovascular Diseases Research Center Birjand University of Medical SciencesBirjandIran Brighton&Sussex Medical School Division of Medical EducationFalmerBrightonSussex BN19PHUK

Objective: To assess the efficacy of a curcumin supplementation on cognitive abilities in women suffering from premenstrual syndrome(PMS) and dysmenorrhea. Methods: A randomized, triple-blind, placebocontrolled trial was conducted from December 2019 to March 2020. A total of 124 women who had both PMS and dysmenorrhea were enrolled, and were equally and randomly assigned to the curcumin group or placebo group, 62 cases in each. Each subject received either a capsule containing 500 mg of curcuminoid, or a placebo daily, for 10 days(7 days before and until 3 days after the onset of menstrual bleeding) over 3 menstrual cycles. The cognitive abilities questionnaire was used to measures cognitive functions in 7 specific areas. Adverse reactions were monitored during and after the trial in both groups. Results: Administration of curcumin was associated with a significant increase in memory score(P=0.002), inhibitory control and selective attention(P=0.020), and total cognitive ability task(P=0.024). In addition, significant increments were found in scores of memory(3.5±3.1 vs. 0.4±3.8 in the curcumin and placebo groups, respectively;P=0.035), inhibitory control and selective attention(3.0±3.7 vs. 0.4±3.7;P=0.027) and total cognitive abilities(8.3±12.3 vs. 2.2±12.4;P=0.025) in the curcumin group versus placebo groups. Curcumin was safe and well-tolerable in current clinical trial. Conclusion: Curcumin has a beneficial efficacy on cognitive function scores in women with PMS and dysmenorrhea, with improvements in memory, inhibitory control and selective attention.(Registration No. IRCT20191112045424N1, available at: https://***)

关键词： curcumin memory cognition dysmenorrheal premenstrual syndrome triple-blind placebo-controlled clinical trial

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