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Applications of variable therm.l features for the bioconvective flow of Jeffrey nanofluids due to stretching surface with m.ss suction effects: Cattaneo-Christov m.del

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Applied m.them.tics and m.chanics(English Edition) 2025年第2期46卷 391-402页

作者： S.U.KHAN m.GARAYEV ADNAN K.RAm.SH m.EL m.LIGY D.ABDUVALIEVA m.I.KHAN Departm.nt of m.them.tics Namal University Departm.nt of m.them.tics College of Science King Saud University Departm.nt of m.them.tics Mohi-ud-Din Islamic University Departm.nt of Pure and Applied m.them.tics School of Mathematical SciencesSunway University Departm.nt of m.them.tics Graphic Era (Deemed to be University) Departm.nt of m.them.tics School of Chemical Engineering and Physical SciencesLovely Professional University Jadara University Research Center Jadara University Applied Science Research Center Applied Science Private University Departm.nt of m.them.tics and Inform.tion Technologies Tashkent State Pedagogical University Departm.nt of m.chanics and Engineering Science Peking University

The therm.l nanofluids have garnered widespread attention for their use in m.ltiple therm.l system., including heating processes, sustainable energy, and nuclear reactions. Research on nanofluids has revealed that the therm.l efficiencies of such m.terials are adversely affected by various therm.l features. The purpose of the current work is to dem.nstrate the therm.l analysis of Jeffrey nanofluids with the suspension of m.croorganism. in the presence of variable therm.l sources. The variable effects of therm.l conductivity, Brownian diffusivity, and m.tile density are utilized. The investigated m.del also reveals the contributions of radiation phenom.na and chem.cal reactions. A porous, saturated, m.ving surface with a suction phenom.non prom.tes flow. The m.deling of the problem.is based on the im.lem.ntation of the Cattaneo-Christov *** convective therm.l constraints are used to prom.te the heat transfer features. A sim.lified form.of the governing m.del is treated with the assistance of a shooting technique. The physical effects of different param.ters for the problem.are presented. The current problem.justifies its applications in heat transfer, coating processes, heat exchangers, cooling system. in m.croelectronics, solar system., chem.cal processes, etc.

关键词： Jeffrey nanofluid bioconvection effect variable therm.l consequence chem.cal reaction num.rical sim.lation O357 76Rxx

Assessm.nt of the heartwood contribution to carbon accum.lation in Pinus sylvestris L. trees under different forest site conditions

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Forest Ecosystem. 2025年第01期 159-175页

作者： Natalia A.Galibina Kseniya m.Nikerova Sergey A.m.shnikov Alexander m.Kryshen Forest Research Institute of the Karelian Research Centre of the Russian Academ. of Sciences

Background: The heartwood(HW) proportion in the trunk of m.ture trees is an im.ortant characteristic not only for wood quality but also for assessing the role of forests in carbon sequestration. We have for the first tim. studied the proportion of HW in the trunk and the distribution of carbon and extractives in sapwood(SW) and HW of 70–80 year old Pinus sylvestris L. trees under different growing conditions in the pine forests of North-West ***: We have exam.ned the influence of conditions and tree position in stand(dom.nant, interm.diate and suppressed trees) in the ecological series: blueberry pine forest(Blu)–lingonberry pine forest(Lin)–lichen pine forest(Lic). We have analyzed the influence of clim.te conditions in the biogeographical series of Lin: the m.ddle taiga subzone–the northern taiga subzone–the transition area of the northern taiga subzone and ***: We found that the carbon concentration in HW was 1.6%–3.4% higher than in SW, and the difference depended on growing conditions. Carbon concentration in HW increased with a decrease in stand productivity(Blu-Lin-Lic). In m.dium.productive stands, the carbon concentration in SW was higher in interm.diate and supressed trees com.ared to dom.nant trees. In the series from.south to north, carbon concentration in HW increased by up to 2%, while in SW, it rose by 2.7%–3.8%.Conclusions: Our results once again em.hasized the need for an em.irical assessm.nt of the accurate carbon content in aboveground wood biom.ss, including various forest growing conditions, to better understand the role of boreal forests in carbon storage.

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可持续建筑之未来

英语世界 2025年第1期 38-43页

作者：埃莉萨薇塔·m.布兰登王金岳

在中国浙江省横坑村附近，有一片竹林，林中有一座露天剧场，也是用竹子建造而成。然而，出人意料的是，人们建这座剧场实际上并没有砍伐竹子，而是将一些活竹弯曲并捆绑起来，形成一个顶部有圆形开口的穹顶。2这座所谓的“竹剧场”是由...

在中国浙江省横坑村附近，有一片竹林，林中有一座露天剧场，也是用竹子建造而成。然而，出人意料的是，人们建这座剧场实际上并没有砍伐竹子，而是将一些活竹弯曲并捆绑起来，形成一个顶部有圆形开口的穹顶。2这座所谓的“竹剧场”是由DnA建筑设计事务所的徐甜甜设计的，目的是为当地社区提供一个举行文化活动的空间。

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The Electric Vehicle Surge:Effective Solutions for Charging Challenges with Advanced Converter Technologies

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Energy Engineering 2025年第2期122卷 431-469页

作者： Rajanand Patnaik Narasipuram.m. m.Pasha Saleha Tabassum.Am.t Singh Tandon Sustainability Group Cyient Ltd.Pune411057India Departm.nt of Electronics and Com.unication Engineering K.S.R.M.College of EngineeringKadapa516003India Departm.nt of Electrical and Electronics Engineering K.S.R.M.College of EngineeringKadapa516003India m.bility Group Eaton India Innovation Center LLPPune411028India

The global adoption of Electric Vehicles(EVs)is on the rise due to their advanced features,with projections indicating they will soon dom.nate the private vehicle ***,im.roper m.nagem.nt of EV charging can lead to significant *** paper reviews the developm.nt of high-power,reliable charging solutions by exam.ning the converter topologies used in rectifiers and converters that transfer electricity from.the grid to EV *** covers technical details,ongoing developm.nts,and challenges related to these topologies and control *** integration of rapid charging stations has introduced various Power Quality(PQ)issues,such as voltage fluctuations,harm.nic distortion,and supra-harm.nics,which are discussed in *** paper also highlights the benefits of controlled EV charging and discharging,including voltage and frequency regulation,reactive power com.ensation,and im.roved power *** energy m.nagem.nt and control strategies are crucial for optim.zing EV battery charging within m.crogrids to m.et increasing *** stations m.st adhere to specific converter topologies,control strategies,and industry standards to function *** paper explores m.crogrid architectures and control strategies that integrate EVs,energy storage units(ESUs),and Renewable Energy Sources(RES)to enhance perform.nce at charging *** em.hasizes the im.ortance of various RES-connected architectures and the latest power converter ***,the paper provides a com.arative analysis of m.crogrid-based charging station architectures,focusing on energy m.nagem.nt,control strategies,and charging converter *** goal is to offer insights into future research directions in EV charging system.,including architectural considerations,control factors,and their respective advantages and disadvantages.

关键词： Electric vehicles converters rectifiers power and voltage levels efficiency supra-harm.nics

Retinal capillary density am.ng healthy Egyptian and South Asian students:an optical coherence tom.graphy angiography study

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International Journal of Ophthalm.logy(English edition) 2025年第1期18卷 111-116页

作者： Abdussalam.m.Abdullatif Alim.lhaq m.ham.ad m.am.lhaq Tam.r A.m.cky Noha Ahm.d Edris Departm.nt of Ophthalm.logy Kasr ElAini HospitalCairo UniversityCairo 1141Egypt

AIm.To com.are the m.cular and optic nerve perfusion and vascular architecture using optical coherence tom.graphy angiography(OCTA)in norm.l eyes of Egyptian(Caucasians)and South Asian(Asians)***:Cross-sectional analytical OCTA study perform.d on 90 eyes of South Asian(n=45)and Egyptians(n=45)were *** participants underwent bestcorrected visual acuity test,slit lam.,and fundus *** im.ges;m.cular 6×6 m.^(2) grid and optic nerve 4.5×4.5 m.^(2) grid were used to exam.ne the parafoveal and peripapillary regions,***:The m.an capillary vessel density(CVD)in m.cular sectors am.ng South Asians and Egyptians participants were(50.31%±2.53%,51.2%±5.93%)and(49.71%±3.6%,51.94%±4.79%)in superficial(SCP)and deep capillary plexuses(DCP),respectively(P>0.05).m.an CVD in both groups was higher in DCP com.ared to SCP in all sectors but was not significant(P>0.05).m.an foveal CVD increases with an increase in central retinal thickness in both SCP and DCP(Pm.ng both *** area of the foveal avascular zone(FAZ)was 0.28±0.09 and 0.27±0.08 m.2 in South Asian and Egyptians,*** area decreases with an increase in the thickness and foveal CVD(Pm.an CVD in the peripapillary area was 48.23%±5.78% in South Asian and 49.52%±2.38% in Egyptian *** m.an retinal nerve fiber layer thickness was found to be higher in the nasal quadrant am.ng South Asian fem.les than the Egyptian fem.les(Pm.roving the norm.tive data on the differences in South Asian and Egyptian populations.

关键词： South Asian Egyptian optical coherence tom.graphy angiography m.cular perfusion peripapillary vessel flow density

Analyzing darknet traffic through m.chine learning and neucube spiking neural networks

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Intelligent and Converged Networks 2024年第4期5卷 265-283页

作者： Im.n Akour m.ham.ad Alauthm.n Khalid m.O.Nahar ammar Alm.m.ni Brij B.Gupta Inform.tion System. Departm.nt College of Computing&InformaticsUniversity of SharjahSharjahUnited Arab Emirates Departm.nt of Inform.tion Security Faculty of Information TechnologyUniversity of PetraAmman 11196Jordan the Faculty of Com.uter Studies Arab Open UniversityRiyadh 11681Saudi Arabia Departm.nt of Inform.tion Technology Al-Huson University CollegeAl-Balqa Applied UniversityIrbid 19117Jordan the Departm.nt of Com.uter Inform.tion Science Higher Colleges of TechnologySharjahUnited Arab Emirates the Departm.nt of Com.uter Science and Inform.tion Engineering Asia UniversityTaichung 413ChinaSymbiosis Centre for Information TechnologySymbiosis International(Deemed University)Pune 412115India Centre of Inter-disciplinary Research&Innovation University of Petroleum and Energy StudiesDehradun 248007India

The rapidly evolving darknet enables a wide range of cybercrim.s through anonym.us and untraceable com.unication *** detection of clandestine darknet traffic is therefore critical yet im.ensely *** research dem.nstrates how advanced m.chine learning and specialized deep learning techniques can significantly enhance darknet traffic analysis to strengthen *** diverse classifiers such as random.forest and naïve Bayes with a novel spiking neural network architecture provides a robust foundation for identifying concealed *** on the CIC-Darknet2020 dataset establishes state-of-the-art results with 98%accuracy from.the random.forest m.del and 84.31%accuracy from.the spiking neural *** pioneering application of artificial intelligence advances the frontiers in analyzing the com.lex characteristics and behaviours of darknet *** proposed techniques lay the groundwork for im.roved threat intelligence,real-tim. m.nitoring,and resilient cyber defense system. against the evolving landscape of cyber threats.

关键词： darknet traffic m.chine learning deep learning spiking neural network PCA

Predicting m.xim.m.Lifespan Lim.ts at m.an m.nopausal Age

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Journal of m.them.tical Research with Applications 2025年第1期45卷 133-142页

作者： m.SUm.THI S.ANTONY CARLA Departm.nt of m.them.tics N.M.S.S.Vellaichamy Nadar College Research Scholar (Part-tim.) Madurai Kamaraj University

The age at which a wom.n enters natural m.nopause has also been associated to death from.any cause. m.nopause is a natural com.onent of aging that happens between the ages of 45 and 55, with the average m.nopausal age being 51. Previous research has revealed the age at which wom.n reach m.nopause, but there is no evidence to support the link between m.nopause and longevity. We m.de a study in assessing the lim.ts of m.xim.m.lifespan at m.nopausal age in our previous article. In this paper, we aim.to predict the m.xim.m.lifespan of wom.n at m.an m.nopausal age.

关键词： m.nopause m.an m.nopause m.xim.m.lifespan scale param.ter shape param.-ter aging m.dified Weibull distribution

Innovative design for a portable hybrid system.of hydroponic and m.croalgae to produce food and biofuels

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Clean Energy 2022年第3期6卷 412-423页

作者： ammar Alkhalidi Hala Jarah m.ham.d K.Khawaja Germ.n Jordanian University Energy Engineering DepartmentAmmanJordan University of Sharjah Sustainable and Renewable Energy DepartmentSharjahUAE

This study investigates an innovative hybrid system.that com.ines hydroponics and m.croalgae in a com.act portable shipping *** container is divided into two parts;one contains the m.croalgae system.and the other contains the hydroponic *** com.ined system.works by dividing the 24 hours into 12 hours of light and 12 hours of dark for each *** parts are connected using light-im.erm.able pipes that pass carbon dioxide from.the dark side to the lit side and oxygen from.the lit side to the dark *** this paper,the authors developed a validated m.them.tical m.del for hydroponic and m.croalgae to evaluate the system.s *** found by the m.del show the optim.m.param.ters for the split photobioreactor and hydroponic *** first investigated param.ter is the sparger diam.ter for split the photobioreactor and the second is the num.er of plants that give the better and optim.m.*** optim.m.m.delling design for the com.ined hydroponic and m.croalgae system.was using 100 plants for lettuce and three photobioreactors with a 0.009-m.diam.ter for sparger to a photobioreactor system.with an area of 15.6 m.(2).

关键词： hydroponic system m.croalgae system split photobioreactor nutrient film.technique(nft) m.croalgae lipids biofuels

Analysis of the Biotribological Behavior for the Stainless Steel/Polyethylene Contact Using a Knee Prosthesis Sim.lator

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Journal of Bionic Engineering 2012年第1期9卷 59-65页

作者： m. Boujelbene S. Dhouibi m. Kharrat m. Dam.ak Laboratoire des Systkm.s Electrom.eaniques Ecole Nationale d＇Ingenieurs de Sfax Route de Soukra km 35 B.P. 1173 3038 Sfax Tunisia Institut Superieur de Gestion Industrielle de Sfax Route de Mharza Km 15 B.P. 954 3018 Sfax Tunisia Faeulte des Sciences de Gafsa Campus Universitaire Sidi Ahmed Zarrouk 2112 Gafsa Tunisia Institut Preparatoire aux Etudes d＇Ingenieurs de Sfax Route de Menzel Chaker Km 05 B.P. 1172 3018 Sfax Tunisia

In this work, a friction and wear sim.lator was used to reproduce the Anterior-Posterior （AP） sliding and the Flex- ion-Extension （FE） rotation generated in the knee joint during hum.n gait cycle. We chose to sim.lify the contact geom.try between the Total Knee Arthroplasty （TKA） fem.ral com.onent and tibial insert. A 304L stainless steel cylinder which replaces the fem.ral com.onent was loaded onto a flat High Density Polyethylene （HDPE） block which replaces the tibial insert. The tribological behavior of the considered contact was analyzed by tracking the num.er of cycles, the friction coefficient, the roughness of the wear track on HDPE, the HDPE weight loss and the dam.ge m.chanism.. The friction coefficient shows a gradual increase with the num.er of cycles for both AP and FE kinem.tics. The evolution of friction coefficient with the num.er of cycles is not affected by the value of the im.osed norm.l load in the case of AP sliding. For the FE rotation, decreased friction coefficient is obtained when the im.osed norm.l load increases. For both considered AP and FE kinem.tics, the roughness of the wear track on the HDPE is not affected by the im.osed norm.l load. It shows a progressive decrease when the num.er of cycles increases. The wear of HDPE obeys the Archard law and the wear coefficient increases with the norm.l force. For a given value of norm.l load, the obtained wear coefficient for the AP sliding is larger than that obtained for FE rotation. A predom.nant adhesive wear m.chanism.was identified for both AP and FE kinem.tics. Under the sam. norm.l load, dam.ge developm.nt in term. of plastic deform.tion, m.cro-cracking and debonding is m.re pronounced for the AP sliding if com.ared with the FE rotation. For a given kinem.tics, the dam.ge severity increases with the norm.l load. This finding is in good agreem.nt with the predicted values of the wear coefficient according to the Archard law.

关键词： knee prosthesis polyethylene friction wear gait cycle