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Coarse to Fine: The Role of Severe Plastic Deformation in Advancing Titanium-Based Medical implants - A Comprehensive Review

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 295-306页

作者： Dragana R Mihajlović Bojan i Međo ivana Lj Cvijović-Alagić Veljko R Djokić Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Vinča institute of Nuclear Sci-ences-National institute of the Republic of Serbia University of Belgrade11001BeogradSerbia innovation Centre of the Faculty of Technology and Metallurgy Karnegijeva 411120 BelgradeSerbia

This paper describes severe plastic deformation(SPD)procedures,which are utilized to form an ultrafine-grained structure in metallic *** the SPD process,a solid material sample is subjected to very high loads without a significant change in sample *** the present work,the high-pressure torsion(HPT)process,as one of the SPD techniques,which achieves a high degree of deformation and ensures refinement of the microstructure,will be discussed in more *** that grain size control is accepted as a method to obtain materials with desired characteristics,an overview of the properties of ultrafine-grained titanium-based biomaterials to be used in medicine is ***,particular attention is dedicated to the influences of HPT process parameters,primarily hydrostatic pressure,and number of revolutions during torsion,on the grain size and physical and mechanical characteristics(modulus of elasticity,microhardness,and tensile properties),corrosion resistance,and biocompatibility of the titanium-based biomaterials.A review of the literature indicates that titanium-based materials obtained by the SPD process show improved mechanical and physical properties without losing biocompatibility and corrosion resistance,which suggests that these methods of obtaining implants are something that should be further developed in the future.

关键词： high-pressure torsion process ultrafine-grained titanium-based materials electrochemical anodization physical properties mechanical properties

Overview of the Global Electricity System in Oman Considering Energy Demand Model Forecast

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Energy Engineering 2023年第2期120卷 409-423页

作者： Ahmed Al-abri Kenneth E.Okedu Department of Electrical and Communication Engineering National University of Science and TechnologyPC 111MuscatSultanate of Oman Department of Electrical and Electronic Engineering Nisantasi UniversityIstanbulTurkey

Lately,in modern smart power grids,energy demand for accurate forecast of electricity is gaining attention,with increased interest of *** is due to the fact that a good energy demand forecast would lead to proper responses for electricity *** addition,proper energy demand forecast would ensure efficient planning of the electricity industry and is critical in the scheduling of the power grid capacity and management of the entire power *** most power systems are been deregulated and with the rapid introduction and development of smart-metering technologies in Oman,new opportunities may arise considering the efficiency and reliability of the power system;like price-based demand response *** programs could either be a large scale for household,commercial or industrial ***,excellent demand forecasting models are crucial for the deployment of these smart metering in the power grid based on good knowledge of the electricity market ***,in this paper,an overview of the Oman regulatory regime,financial mechanism,price control,and distribution system security standard were *** so,the energy demand forecast in Oman was analysed,using the econometric model to forecasts its energy peak *** energy econometric analysis in this study describes the relationship between the growth of historical electricity consumption and macro-economic parameters(by region,and by tariff),considering a case study of Mazoon Electricity Distribution Company(MZEC),which is one of the major power distribution companies in Oman,for effective energy demand in the power grid.

关键词： Energy forecast energy demand load demand power grids electricity sector

Multisensory mechanisms of gait and balance in Parkinson’s disease:an integrative review

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Neural Regeneration Research 2025年第1期20卷 82-92页

作者： Stiven Roytman Rebecca Paalanen Giulia Carli Uros Marusic Prabesh Kanel Teus van Laar Nico i.Bohnen Department of Radiology University of MichiganAnn ArborMIUSA Department of Neurology University of MichiganAnn ArborMIUSA Morris K.Udall Center of Excellence for Parkinson’s Disease Research University of MichiganAnn ArborMIUSA institute for Kinesiology Research Science and Research Centre KoperKoperSlovenia Department of Health Sciences Alma Mater Europaea–ECMMariborSlovenia Parkinson’s Foundation Research Center of Excellence University of MichiganAnn ArborMIUSA Department of Neurology University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands Neurology Service and GRECC VA Ann Arbor Healthcare SystemAnn ArborMIUSA

Understanding the neural underpinning of human gait and balance is one of the most pertinent challenges for 21st-century translational neuroscience due to the profound impact that falls and mobility disturbances have on our aging *** and gait control does not happen automatically,as previously believed,but rather requires continuous involvement of central nervous *** effectively exert control over the body,the brain must integrate multiple streams of sensory information,including visual,vestibular,and somatosensory *** mechanisms which underpin the integration of these multisensory signals are the principal topic of the present *** multisensory integration theories focus on how failure of cognitive processes thought to be involved in multisensory integration leads to falls in older *** emphasis,however,has been placed on specific contributions of individual sensory modalities to multisensory integration processes and cross-modal interactions that occur between the sensory modalities in relation to gait and *** the present work,we review the contributions of somatosensory,visual,and vestibular modalities,along with their multisensory intersections to gait and balance in older adults and patients with Parkinson’s *** also review evidence of vestibular contributions to multisensory temporal binding windows,previously shown to be highly pertinent to fall risk in older ***,we relate multisensory vestibular mechanisms to potential neural substrates,both at the level of neurobiology(concerning positron emission tomography imaging)and at the level of electrophysiology(concerning electroencephalography).We hope that this integrative review,drawing influence across multiple subdisciplines of neuroscience,paves the way for novel research directions and therapeutic neuromodulatory approaches,to improve the lives of older adults and patients with neurodegenerative diseases.

关键词： aging balance encephalography functional magnetic resonance imaging gait multisensory integration Parkinson’s disease positron emission tomography somatosensory vestibular visual

Fe(NO_3)_3·9H_2O/Fe(HSO_4)_3:An efficient reagent system for the oxidation of alcohols,thiols and sulfides in the absence of solvent

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Chinese Chemical Letters 2008年第1期19卷 51-54页

作者： Farhad Shirini Mohammad A.Zolfigol Abdol-Reza abri Department of Chemistry College of ScienceUniversity of GuilanRasht 41335Iran College of Chemistry Bu-Ali Sina UniversityHamadan 65174Iran

Fe（NO3）3-9H2O/Fe（HSO4）3 was used as an efficient reagent system for the oxidation of alcohols to their corresponding carbonyl compounds. All reactions were performed in the absence of solvent in good to high yields. Under the same reaction conditions, thiols and sulfides were also converted to their corresponding disulfides and sulfoxides, respectively. 2007 Farhad Shirini. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Alcohols Thiols Sulfides Fe(NO3)3·9H2O Fe(HSO4)3

Simulating soil loss rate in Ekbatan Dam watershed using experimental and statistical approaches

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international Journal of Sediment Research 2019年第3期34卷 226-239页

作者： Seyed Davood Mohammadi Fateme Naseri Roghaye abri Department of Geology Faculty of Sciences Bu-Ali Sina University Pars Consulting Engineers inc.

Reservoir sedimentation resulting from water erosion is an important environmental issue in many countries where storage of water is crucial for economic and agricultural development. Therefore, this paper reports results from analysis of the soil hydrological response, i.e. soil water erosion, to simulated rainfall resulting in sediment accumulation at the reservoir of Ekbatan Dam(Hamedan province, iran). Also, another objective of this study was to simulate the future trends in reservoir sedimentation(soil loss rate; SLR) from indoor rainfall simulator data by multiple linear regression(MLR) and Artificial Neural Networks(ANNs). For this research, three sampling points with different types of soils were chosen including clayey sand soil(SC-SM),silty soil(ML), and clayey soil(CL). The input parameters were slope gradient(sin θ), soil type(St), water content(w), dry density e?dT; shear strength(τ), unconfined compressive strength(qu), permeability(k), and California bearing ratio(CBR). Using MLR and ANN methods, 7 models were developed with 2 constant predictors(i.e. sin θ and St) and 6 free predictors which were added in each step one by one. Among MLR models, model 5 with St,sin θ,?d, τ, w, and quas input parameters was statistically significant. Among ANN models, model 4 with St,sin θ,?d, τ, and w as input parameters, 9 nodes, and 1 hidden layer was statistically significant. The root mean square error(RMSE), mean error(ME), and correlation coefficient(R) values were1.433 kg/m~2 h, 0.0195 kg/m~2 h, and 0.698 for the MLR model and 0.38 kg/m~2 h, 0.151 kg/m~2 h, and 0.98 for the ANN model, respectively. These results show that the ANN model could better predict the SLR in comparison to the MLR model. The results also demonstrate that shear strength, among the strength parameters, had a greater impact on the SLR than compressive strengths(quand CBR). Last but not the least, the reservoir sedimentation was estimated for all methods and compared with the observed data

关键词： Soil erosion Catchment Rainfall simulation Sediment yield estimation Soil properties Modeling

Apolipoprotein A-i binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan Choi Soo-Ho Choi Keun-Young Kim Yury i.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

Regioselective tetrahydropyranylation of alcohols catalyzed by Fe(HSO_4)_3

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Chinese Chemical Letters 2007年第7期18卷 803-806页

作者： Farhad Shirini Mohammad Ali Zolfigol Abdol-Reza abri Department of Chemistry College of Science The University of Guilan Rasht 41335 Iran Department of Chemistry College of Science Bu-Ali Sina University Hamadan 65174 Iran

Alcohols are selectively and efficiently protected as their tetrahydropranyl ethers in the presence of a catalytic amount of Fe（HSO4）3 in good to high yields. All reactions are performed under mild and completely he... 详细信息

关键词： Alcohols Tetrahydropyranylation Tetrahydropyranyl ethers Fe(HSO4)3 Heterogeneous reaction conditions

Nano-Enhanced Dairy Scum Biodiesel Blends:Unleashing the Power of Aluminium Oxide for Sustainable and Efficient Engine Performance

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Journal of Thermal Science 2025年第1期34卷 283-302页

作者： Veeranna MODi Prasad B.RAMPURE Sunil Kumar SHETTY Madeva NAGARAL Channa Keshava NAiK N Johar MGM Muhammad irsyad ABDULLAH Abdullah i.AL-MANSOUR Shamshad ALAM KLE College of Engineering and Technology ChikodiVisvesvaraya Technological University Nitte (Deemed to be University) NMAM Institute of Technology (NMAMIT)Department of Mechanical Engineering Aircraft Research and Design Centre HAL Department of Mechanical Engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological University Management and Science University Department of Civil Engineering College of EngineeringKing Saud University

This study investigates the effect of aluminium oxide nanoparticlesaddition to biodiesel blends made from dairy milk scum on performance and combustion characteristics of the diesel *** dispersion of Al2O3nanoparticles in B20 blends at different concentrations was done with the help of *** number of blends were prepared for the *** Machine learning algorithms(Random Forest（RF）and CatBoost) was used for the *** results show that in comparison to biodiesel blends without nanoparticles,the kinematic viscosity and density is higher for fuel blends with *** these Fuel blends have higher calorific *** blends exhibited reduced Brake Specific Fuel Consumption（BSFC） of2.85% than the blends without nano particles(Dairy Scum Methyl Ester Biodiesel 20%+Neat Diesel 80%（in volume）,DSMEB20),57.14% less CO,40.8% less hydrocarbon,and increased NOxemissions compared to conventional diesel,contributing to the development of environmentally friendly and renewable biofuel blends with *** B20NP30 is the optimal blend for performance and emission *** study concludes with findings on enhanced Brake Thermal Efficiency（BTE） of 26.29% in 3×10-5（in volume） Al2O3nanoparticle-blended DSME B20 and other DSME B20 fuel blends,emphasizing the importance of optimal nanoparticle *** correlation matrix shows how engine load,efficiency measures（BTE,BSFC）,and emissions（CO,CO2,NOx,Smoke） are connected in complex *** results help us understand the complicated dynamics of engine performance and emission characteristics ***'s diagram for BTE and BSFC shows that CatBoost-based BTE models perform superior to RF-based models during the training as well as testing *** results were obtained for CO and CO2emission results.

关键词： Al2O3 concentration Ci engine Dairy Scum Methyl Ester Biodiesel

Advances in diamond nanofabrication for ultrasensitive devices

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Microsystems & Nanoengineering 2017年第1期3卷 80-95页

作者： Stefania Castelletto Lorenzo Rosa Jonathan Blackledge Mohammed Zaher Al abri Albert Boretti School of Engineering RMIT UniversityBundooraVictoria 3083Australia Swinburne University of Technology Centre for Micro-Photonics(H74)HawthornVictoria 3122Australia Department of information Engineering University of ParmaParma 43121Italy Military Technological College Muscat 111Sultanate of Oman Dublin institute of Technology Rathmines RoadDublin 6Ireland Department of Petroleum and Chemical Engineering Sultan Qaboos UniversityPO Box 33Al-KhoudMuscat 123Sultanate of Oman Water Research Center Sultan Qaboos UniversityPO Box 17Al-KhoudMuscat 123Sultanate of Oman Department of Mechanical and Aerospace Engineering Benjamin M.Statler College of Engineering and Mineral ResourcesWest Virginia UniversityP.O.Box 6106325 Engineering Sciences BuildingMorgantownWV 26506USA

This paper reviews some of the major recent advances in single-crystal diamond nanofabrication and its impact in nano-and micromechanical,nanophotonics and optomechanical *** constituents of integrated devices incorporating specific dopants in the material provide the capacity to enhance the sensitivity in detecting mass and forces as well as magnetic field down to quantum mechanical limits and will lead pioneering innovations in ultrasensitive sensing and precision measurements in the realm of the medical sciences,quantum sciences and related technologies.

关键词： nano-diamonds nanofabrication nanomechanics nanophotonics optomechanics