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Performance analysis of a tuned point absorber using SPH calm water and wave tank simulations

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Journal of Ocean Engineering and Science 2024年第5期9卷 409-436页

作者： Kaveh soleimani Mohammad Javad Ketabdari Department of Maritime Engineering Amirkabir University of TechnologyTehranIran

In this paper,two smoothed particle hydrodynamics(SPH)models,namely SPH-W and SPH-C were used to evaluate the motion response of a point absorber wave energy converter(WEC).In the SPH-W model,a long wave flume was constructed and a long simulation was performed to obtain the motion response of the *** the SPH-C model,the SPH method is only used to find the hydrodynamic coefficients of the device by analysing a few seconds of free-decaying motion of WEC in calm water in a much smaller numerical ***,these coefficients were inserted in the equation of motion of a heaving WEC that was solved using a 4th order Runge-Kutta(ODE45)solver in ***,the energy conservation property of the WCSPH model was examined through a standing wave benchmark ***,the wavepoint absorber interaction was *** the simulation time for SPH-C model is much smaller than that of SPH-W,it gave almost similar results for the motion response of *** two models were used to evaluate the effects of the control force and the draft of a cone-cylinder point absorber on its hydrodynamic *** results showed that compared to the effect of the supplementary inertia,changes in the draft of the WEC have a small influence on its hydrodynamic *** buoy draft has an inverse relationship with both added mass and damping ***,increasing the supplementary mass increases the added mass and decreases the hydrodynamic damping coefficients.

关键词： Point absorber Power take-off Control forces SPH wave tank test SPH calm water test DualSPHysics

Blockchain privacy and regulatory compliance:Towards a practical equilibrium

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Blockchain(Research and Applications) 2024年第1期5卷 1-9页

作者： Vitalik Buterin Jacob Illum Matthias Nadler Fabian Schär Ameen soleimani Ethereum Foundation Switzerland Chainalysis United States of America University of Basel Switzerland Privacy Pools United States of America

We study Privacy Pools,a novel smart contract-based privacy-enhancing *** protocol introduces a mechanism for users to reveal certain properties of their transaction without having to reveal the transaction *** core concept involves allowing users to publish a zero-knowledge proof,demonstrating that their funds(do not)originate from known(un-)lawful sources,without publicly revealing their entire transaction *** is achieved by proving membership in custom association sets,which are designed to demonstrate compliance with regulatory frameworks or social *** illustrate how this mechanism can create a separating equilibrium between compliant and non-compliant *** work describes the technical underpinnings,incentives,and broader implications of this mechanism,highlighting how Privacy Pools-like protocols can create more private yet compliant blockchain transactions.

关键词： Blockchain Privacy Regulation Smart contracts Zero-knowledge proofs

Analysis of CH_(4) and H_(2) Adsorption on Heterogeneous Shale Surfaces Using aMolecular Dynamics Approach

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Fluid Dynamics & Materials Processing 2024年第1期20卷 31-44页

作者： Surajudeen Sikiru Hassan soleimani Amir Rostami Mohammed Falalu Hamza Lukmon Owolabi Afolabi Centre of Subsurface Imaging(CSI) Universiti Teknologi PETRONASTronohPerakMalaysia Department of Geosciences Universiti Teknologi PETRONASBandar Seri IskandarTronohPerakMalaysia Department of Pure&Industrial Chemistry Faculty of Physical SciencesBayero University KanoKanoNigeria Department of Mechanical Engineering Engineering Institute of TechnologyMelbourne Campus VictoriaMelbourneAustralia

Determining the adsorption of shale gas on complex surfaces remains a challenge in molecular simulation *** essentially stem from the need to create a realistic shale structure model in terms of mineral heterogeneityand ***,precise characterization of the competitive adsorption of hydrogen andmethane in shale generally requires the experimental determination of the related adsorptive *** thisstudy,the adsorption of adsorbates,methane(CH_(4)),and hydrogen(H_(2))on heterogeneous shale surface modelsof Kaolinite,Orthoclase,Muscovite,Mica,C_(60),and Butane has been simulated in the frame of a moleculardynamic’s numerical *** results show that these behaviors are influenced by pressure and *** increasing the pressure from 500 to 2000 psi,the sorption effect for CH_(4)significantly increasesbut shows a decline at a certain stage(if compared to H_(2)).The research findings also indicate that raw shalehas a higher capacity to adsorb CH_(4)compared to ***,in shale,this difference is negligible.

关键词： Shale gas adsorption methane hydrogen molecular dynamic sorption

Long noncoding RNAs (lncRNAs) in human lymphomas

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Genes & Diseases 2022年第4期9卷 900-914页

作者： Ali Gholami Khosro Farhadi fatemeh Sayyadipour Masoud soleimani Fakhredin Saba Clinical Research Development Center Taleghani and Imam Ali HospitalKermanshah University of Medical SciencesKermanshah 671568-5420Iran Department of Haematology Tarbiat Modares UniversityTehran 146899-5513Iran Department of Medical Laboratory Science School of ParamedicalKermanshah University of Medical SciencesKermanshah 671568-5420Iran

Lymphomas are a diverse group of haematologic malignancies, which occur in infection-fighting cells of the lymphatic system. Long non-coding RNAs (lncRNAs) are non-coding RNAs, which have recently received significant attention as the main mediators of gene expression. In this review, we summarize the current knowledge on lncRNAs involved in lymphomas, their molecular functions, as well as their potential clinical value. Relevant literature was identified by a PubMed search of English language papers using the following terms: Lymphoma, LncRNA, leukemia, proliferation, apoptosis, and prognosis. LncRNAs are imperative for lymphoma carcinogenesis through affecting apoptosis, cell proliferation, invasion, and response to chemotherapy. The expression level of lncRNAs can affect chemotherapy-induced apoptosis. Taken together, lncRNA dysregulation in lymphoma cells is not only an epiphenomenon but also lncRNA transcription is critically related to the initiation and progression of lymphomas. Aberrant expression of lncRNAs can lead to the transformation of normal lymphocytes into lymphoma cells.

关键词： Apoptosis Long non-coding RNA Lymphoma Prognosis Proliferation

Naturally fractured hydrocarbon reservoir simulation by elastic fracture modeling

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Petroleum Science 2017年第2期14卷 286-301页

作者： Mehrdad soleimani Faculty of Mining Petroleum and Geophysics Shahrood University of Technology Shahrood Iran

Accurate fluid flow simulation in geologically complex reservoirs is of particular importance in construction of reservoir *** approaches in naturally fractured reservoir simulation involve use of unstructured grids or a structured grid coupled with locally unstructured grids and discrete fracture *** methods suffer from drawbacks such as lack of flexibility and of ease of *** this study,I combined fracture modeling by elastic gridding which improves flexibility,especially in complex *** proposed model revises conventional modeling fractures by hard rigid planes that do not change through *** is a dubious assumption,especially in reservoirs with a high production rate in the *** proposed elastic fracture modeling considers changes in fracture properties,shape and aperture through the *** strategy is only reliable for naturally fractured reservoirs with high fracture permeability and less permeable matrix and parallel fractures with less *** of elastic fracture modeling results with conventional modeling showed that these assumptions will cause production pressure to enlarge fracture apertures and change fracture shapes,which consequently results in lower production compared with what was previously *** is concluded that an elastic gridded model could better simulate reservoir performance.

关键词： Reservoir performance Discrete fracture model Naturally fractured reservoir History matching Elastic gridding

Ultrasonic irradiation and solvent effects on destabilization of colloidal suspensions of platinum nanoparticles

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Particuology 2014年第6期12卷 145-148页

作者： Alireza Salabat Shima soleimani Department of Chemistry Faculty of ScienceArak University

In this work,ultrasonic irradiation and destabilizer solvent were used for destabilizing colloidal platinum *** stabilized platinum nanoparticles were prepared in w/o microemulsion systems composed of sodium bis-（2-ethylhexyl） sulfosuccinate（AOT） and four different solvents,namely,cyclohexane,n-hexane,n-heptane,and *** recovery process of Pt nanoparticles from the colloidal systems was performed by exposing the colloidal samples to ultrasonic irradiation and applying various destabilizing *** of UV-visible spectra confirms that the quantity of Pt nanoparticles removed from the suspension depends on the length of time of the ultrasonic irradiation and the nature of the microemulsion oil phase.A critical time for the ultrasonic irradiation has been introduced for the phase separation of colloidal *** perform the solvent study,four destabilizer solvents,namely,dioxane,ethyl acetate,diethyl ether,and tetrahydrofuran,were used for breaking the colloidal suspension of platinum *** on the ’good solvent’ and ’poor solvent’ idea,it is verified that the effect of the destabilizer solvents on the aggregation process follows the following order：tetrahydrofuran 〉 ethyl acetate 〉dioxane〉 diethyl ether.

关键词： Colloid destabilization Ultrasonic irradiation Microemulsion Solvent effect

Environmental characteristics of anopheline mosquito larval habitats in a malaria endemic area in Iran

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Asian Pacific Journal of Tropical Medicine 2013年第7期6卷 510-515页

作者： Moussa soleimani-Ahmadi Hassan Vatandoost Ahmad-Ali Hanafi-Bojd Mehdi Zare Reza Safari Abdolrasul Mojahedi fatemeh Poorahmad-Garbandi Department of Medical Entomology and Vector Control.School of Public Health Hormozgan University of Medical Sciences.Bandar Abbas.Iran Infectious Diseases Research Center Hormozgan University of Medical Sciences.Bandar AbbasIran Department of Medical Entomology and Vector Control School of Public Health & National Institute of Health ResearchTehran University of Medical SciencesTehranIran Department of Occupational Health Engineering School of Public HealthHormozgan University of Medical SciencesBandar AbbasIran Hormozgan Health Center Hormozgan University of Medical SciencesBandar AbbasIran

Objective:To determine the effects of environmental parameters of lanal habitats on distribution and abundance of anopheline mosquitoes in Rudan county of ***:This cross-sectional study was conducted during the mosquito breeding season from February 2010 to October 2011. The anopheline larvae were collected using the standard dipping method,the specimens were identified using a morphological-based *** with larvay collection,environmental parameters of the larval habitats including water current and turbidity,sunlight situation,and substrate type of habitats were *** samples were taken from breeding sites during lanal *** collection of samples,the water temperature was *** water samples were analysed for turbidity,conductivity,total alkalinity,total dissolved *** and ions including chloride,sulphate,calcium,and *** correlation analysis and ANOVA test were used to analyze the association between environmental parameters and larval mosquito ***:In total 2 973 lanae of the genus Anopheles were collected from 25 larval habitats and identified using morphological *** comprised of six species: ***(53.21%),***(24.22%),***(14.06%),***(4.07%),An. turkhudi(3.30%),and ***(1.14%).The most abundant species was *** which were collected from all of the study *** of two malaria *** and ***, co-existed and collected in a wide range of habitats with different physico-chemical parameters. The most common larval habitats were man-made sites such as sand mining pools with clean and still *** anopheline mosquitoes also preferred permanent habitats in sunlight with sandy *** results indicated that there was a significant relationship between mean physicochemical parameters such as water temperature,conductivity,total alkalinity,sulphate,chloride, and mosquito distribution and ***

关键词： Anopheles Larval habitats Malaria Rudan Iran

The impact of Persian oak (Quercus brantii Lindl.) on soil characteristics in a declining forest

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Journal of Forestry Research 2020年第6期31卷 2359-2366页

作者： Reza soleimani Ahmad Hosseini Crop and Horticultural Science Research Department Ilam Agricultural and Natural Resources Research and Education CenterAREEOIlamIran Forests and Rangelands Research Department Ilam Agricultural and Natural Resources Research and Education CenterAREEOIlamIran

Root activity has an important impact on soil development but we have little knowledge of the interaction of the root zone and soil genetic *** aim of this investigation was to study the interactions between soil chemical characteristics and root zone processes in a declining Persian oak forest(Quercus brantii Lindl.).A randomized complete block design was used to investigate the long-term eff ect of Persian oak on soil horizons,and the chemical and biological properties in two soil zones(under and outside the canopy).Results indicate that the rhizosphere zone had signifi cantly higher total organic carbon(TOC)than outside the canopy soil in the upper soil *** subsurface horizons,water-extractable organic carbon values were signifi cantly higher in rhizosphere than in non-rhizospheric *** biomass carbon(MBC)values in the rhizospheric zone decreased from the fi rst to the second *** MBC/TOC ratio indicated signifi-cant diff erences between the rhizosphere and soils outside of the canopy,with the exception of the subsurface *** the subsurface horizon of the rhizosphere,there was greater respiration of organic carbon(ΣCO 2/TOC)than in outside of canopy *** addition,root processes infl uenced pH,nitrogen fractions,and availability of phosphorus,potassium,iron,zinc and *** erences in soil characteristics between rhizospheric and non-rhizospheric zones were signifi cant in surface horizons due to higher root density than in deeper soil *** fi ndings indicate that Persian oak(Quercus brantii Lindl.)roots infl uenced the main soil chemical properties,even in calcareous soils.

关键词： Declining forest Persian oak Rhizosphere Soil horizons

Er^(3+) ion concentration effect on transient and steady-state behavior in Er^(3+):YAG crystal

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Chinese Physics B 2014年第10期23卷 248-253页

作者： Asadpour Seyyed Hossein Rahimpour soleimani H Department of Physics University of Guilan

The effect of Er3＋ ion concentration on transient and steady-state behavior in 45-nm Er3＋：YAG crystal is investigated. It is shown that by changing the signal field, the coherent field and the concentration of Er3＋ ions in the crystal, the absorption, dispersion, and group index of the weak probe field can be adjusted. Also, it is found that the probe absorption occurs in the presence of population inversion and probe amplification is obtained in the absence of population inversion.

关键词： Er3+ ion concentration absorption dispersion group index