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Unveiling the photocatalytic m.r.els:recent advances in solar heterojunctions for environmental remediation and energy harvesting

第二十六届中国控制会议

作者： Ghanbarian m.m. mohammadi A. Kavehnia F. Keivani H. askari m.r. mohammadi S. Islamic Azad University

ISBN: (纸本)7900719229

The purpose of this study is to illustrate a new method for sensorless vector control of induction *** approach uses Zero-Crossing Times（ZCT）signal of stator current to estimate rotor *** signal contains useful information which can be used for estimation of rotor speed and *** have used this information for online estimation of rotor *** avoid time consuming Fast Fourier Transformation（FFT）analysis of ZCT signal,we have used switchable high order Butterworth Filters in order to extract rotor *** result has expressed good performance of this simple and inexpensive sensorless vector control of induction motors.

关键词： Sensorless Vector Control Zero-Crossing Time Speed Estimation Induction motor.

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Journal of Environmental Sciences 2025年第2期148卷 283-297页

作者： Najmeh askari mansoureh Jamalzadeh Aghil askari Naiyun Liu Bijan Samali mika Sillanpaa Leigh Sheppard Haitao Li raf Dewil Department of Chemical Engineering Process and Environmental Technology LabKU LeuvenDe Nayerlaan 5 Sint-Katelijne-Waver2860Belgium Department of Plastics Engineering UMass LowellLowellMA 01851USA Department of mechanical Engineering UMass LowellLowellMA 01851USA Institute for Energy research Jiangsu UniversityZhenjiang 212013China Centre for Infrastructure Engineering Western Sydney UniversityPenrith NSW2751Australia Department of Biological and Chemical Engineering Aarhus UniversityGustav Wieds Vej 108000 AarhusDenmark Solar Energy Technologies research Group Western Sydney UniversityPenrith NSW2751Australia Department of Engineering Science University of OxfordParks RoadOxfordOX13PJUnited Kingdom

In the quest for effective solutions to address *** meet the escalating energy demands,heterojunction photocatalysts have em.r.ed as a captivating and versatile *** photocatalysts have garnered significant interest due to their wideranging applications,including wastewater treatment,air purification,CO_(2) capture,and hydrogen generation via water *** technique harnesses the power of semiconductors,which are activated under light illumination,providing the necessary energy for catalytic *** visible light constituting a substantial portion(46%)of the solar spectrum,the development of visible-light-driven semiconductors has become *** photocatalysts offer a promising strategy to overcome the limitations associated with activating semiconductors under visible *** this com.r.hensive review,we present the recent advancements in the field of photocatalytic degradation of contaminants across diverse media,as well as the rem.r.able progress made in renewable energy ***,we delve into the crucial role played by various operating parameters in influencing the photocatalytic performance of heterojunction ***,we address em.r.ing challenges and propose novel perspectives to provide valuable insights for future advancements in this dynamic research *** unraveling the potential of heterojunction photocatalysts,this reviewcontributes to the broader understanding of their applications and paves the way for exciting avenues of exploration and innovation.

关键词： Heterojunction photocatalysts Solar photocatalysis Environmental depollution Energy conversion Visible-light-driven semiconductors

Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications

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Defence Technology(防务技术) 2025年第1期43卷 182-200页

作者： K.Tewari m.K.Pandit m.m.mahapatra P.r.Budarapu School of mechanical Sciences Indian Institute of Technology BhubaneswarBhubaneswar752050India

Inspired by nature's self-similar designs,novel honeycomb-spiderweb based self-similar hybrid cellular structures are proposed here for efficient energy absorption in impact *** energy absorption is enhanced by optimizing the geometry and topology for a given *** proposed hybrid cellular structure is arrived after a thorough analysis of topologically enhanced self-similar *** optimized cell designs are rigorously tested considering dynamic loads involving crush and high-velocity bullet ***,the influence of thickness,radial connectivity,and order of patterning at the unit cell level are also *** maximum crushing efficiency attained is found to be m.r. than 95%,which is significantly higher than most existing traditional *** on,the first and second-order hierarchical self-similar unit cell designs developed during crush analysis are used to prepare the cores for sandwich *** tests are performed on the developed sandwich structures using the standard 9-mm *** influence of multistaging on impact resistance is also investigated by maintaining a constant total thickness and mass of the sandwich ***,in order to avoid layer-wise weak zones and hence,attain a uniform out-of-plane impact strength,off-setting the designs in each stage is *** sandwich structures with first and second-order self-similar hybrid cores are observed to withstand impact velocities as high as 170 m/s and 270 m/s,respectively.

关键词： Sandwich structures Honeycomb-spider web inspired Self-similar hierarchy Crush analysis High-velocity impact Strong and weak zones multistaging

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ENSO-induced Latitudinal Variation of the Subtropical Jet modulates Extreme Winter Precipitation over the Western Himalaya

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Advances in Atmospheric Sciences 2025年第3期42卷 427-437页

作者： Priya BHArATI Pranab DEB Kieran m.r.HUNT Andrew Orr mihir Kum.r.DASH Centre for Ocean RiverAtmosphere and Land Sciences(CORAL)Indian Institute of Technology KharagpurKharagpur 721302India Department of meteorology University of ReadingReadingRG66ETUK National Centre for Atmospheric Science University of ReadingRG66ETUK British Antarctic Survey CambridgeCB30ETUK

In this study,we investigate the complex relationship between western disturbances(WDs),the El Ni?o–Southern Oscillation(ENSO),and extreme precipitation events(EPEs) in the western Himalaya(WH) during the extended winter season(November–m.r.h).WDs west of WH coincide with 97% of recorded EPEs,contributing substantially(32% in winter,11% annually) to total precipitation within *** are 6% less frequent and 4% m.r. intense during El Ni?o than La Ni?a to the west of *** El Ni?o(compared to La Ni?a) years,WDs co-occurring with EPEs are significantly m.r. intense and associated with 17% higher moisture transport over “WH box”(the selected region where most of the winter precipitation over WH occurs).This results in twice the EPE frequency during El Ni?o periods than La Ni?a periods.A substantial southward shift(~180 km) of the subtropical jet(STJ) axis during El Ni?o brings WD tracks further south towards their prim.r. moisture sources,especially the Arabian *** have shown that WDs that are both m.r. intense and pass to the south of their typical latitudes have higher levels of vertically integrated moisture flux(VImF)within *** convergence in the most intense pentile of WDs is 5.7 times higher than in the weakest,and is 3.4 times higher in the second lowest latitude pentile than in the ***,this study demonstrates a direct link between changes in the latitudinal position and intensity of WDs associated with the winter STJ,and moisture convergence,which leads to the occurrence of EPEs over WH during ENSO phases.

关键词： western Himalaya extreme precipitation western disturbances ENSO moisture flux winter

The effect of adsorbent textural and functional properties on model naphthenic acid adsorption

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Journal of Environmental Sciences 2025年第2期148卷 27-37页

作者： Tyler m.r.y Elm.r. Nazari Oliver K.L.Strong Paul r.Pede Andrew J.Vreugdenhil material Science Department of ChemistryTrent University1600 West BankPeterboroughOntario K9L 0G2Canada Carbonix 690 Mountain RdSuite 200Fort William First NationOntario P7J 1G8Canada

Naphthenic acids,NAs,are a major contaminant of concern and a focus of much research around remediation of oil sand process affected waters,*** activated carbon adsorbents are an attractive option given their low cost of fabrication and implementation.A deeper evaluation of the effect NA structural differences have on uptake affinity is *** we provide an in-depth exploration of NA adsorption including many m.r. model NA species than have been assessed previously with evaluation of adsorption kinetics and isotherms at the relevant alkaline pH of OSPW using several different carbon adsorbents with pH buffering to simulate the behaviour of real *** for the NA varied considerably regardless of the activated carbon used,ranging from 350 mg/g to near zero highlighting recalcitrant *** equilibrium data was explored to identify structural features of these species and key physiochemical properties that influence *** found that certainNAwill be resistant to adsorptionwhen hydrophobic adsorbents are *** isotherm modelling helped explore interactions occurring at the interface between NA and adsorbent *** identified the importance of NA hydrophobicity for activated carbon *** is also presented that indicates favorable hydrogen bonding between certain NA and surface site hydroxyl groups,demonstrating the importance of adsorbent surface functionality for NA *** research highlights the challenges associated with removing NAs from OSPW through adsorption and also identifies howadsorbent surface chemistry modification can be used to increase the removal efficiency of recalcitrant NA species.

关键词： Adsorption Activated carbon model naphthenic acids Isotherm modelling

Heterogeneity of mature oligodendrocytes in the central nervous system

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Neural regeneration research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam m.r.Groh moein Yaqubi Qiao-Ling Cui Jo Anne Stratton G.r.Wayne moore Jack P.Antel Neuroimmunology Unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a com.r.hensive summ.r. of mature oligodendrocyte diversity is *** delve into early 20th-century studies by robertson and río-Hortega that laid the foundation for the modern identification of regional and m.r.hological heterogeneity in mature ***,recent m.r.hologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus rNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheim.r.s disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a m.r. nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system.r.gion,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression analysis

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On Connected Tetravalent Cayley Graphs of a Non-abelian Group of Order 3p2

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Algebra Colloquium 2017年第3期24卷 467-480页

作者： m.r. Darafsheh m. Abdollahi School of mathematics Statistics and Computer Science College of Science University of Tehran Tehran Iran

In this paper we determine all tetravalent Cayley graphs of a non-abelian group of order 3p2, where p is a prime number greater than 3, and with a cyclic Sylow p-subgroup. We show that all of these tetravalent Cayley graphs are normal. The full autom.r.hism group of these Cayley graphs is given and the half-transitivity and the arc-transitivity of these graphs are investigated. We show that this group is a 5-CI-group.

关键词： Cayley graph autom.r.hism group tetravalent graph half-transitive arctransitive m-CI-group

Effect of divalent cations(Co^(2+) and Ni^(2+)) on microstructure,physical properties and application of NdFeO_(3)

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Journal of rare Earths 2025年第1期43卷 89-97,I0004页

作者： m.m.Arman materials Science Lab(1) Physics DepartmentFaculty of ScienceCairo UniversityGiza12613Egypt

The nanocrystalline samples Nd_(1-x)m_(x)FeO_(3)(x=0.0 and 0.1;m:Co^(2+)and Ni^(2+))were prepared using the citrate combustion *** X-ray diffraction(XrD)pattern confirmed that the nanoparticles were synthesized in an orthorhombic *** particle size of Nd_(1-x)m_(x)FeO_(3) is in the range of 29-59 *** selected area electron diffraction(SAED)indicates the samples were prepared in a polycrystalline *** samples Nd_(1-x)m_(x)FeO_(3)(x=0.0 and 0.1;m:Co^(2+)and Ni^(2+))have anti ferromagnetic *** Fe^(3+)spins are aligned antiparallel,forming the antiferromagnetic(AFm)properties,which are affected by many factors such as the bond angle between the Fe^(3+)(Fe^(3+)-O_(2)--Fe^(3+))and the Dzyaloshinskii-m.r.ya(D-m)*** doping of Co^(2+)and Ni^(2+)ions in NdFeO_(3) enhances the magnetic properties of the NdFeO_(3).The saturation magnetization(ms)of Nd_(0.90)Co_(0.10)FeO_(3) increases 1.8times m.r. than that of NdFeO_(3).The exchange bias field(HEX)of the Co-doped sample is two times greater than that of NdFeO_(3).The magnetic anisotropy constant(K)of the 10%Co-doped sample increases by 11 factors compared to that of NdFeO_(3).The Tauc plot illustrates that the samples have a direct optical *** divalent cation substitution(Co^(2+)and Ni^(2+))decreases the optical band gap of NdFeO_(3),leading to the recommendation of using the samples Nd_(0.90)Co_(0.10)FeO_(3) and Nd_(0.90)Ni_(0.10)FeO_(3) in photocatalysis of dye degradation from *** removal efficiencies of Cr6+at pH=6 are 88.06%,85.54%,and 85.52%for the samples NdFeO_(3),Nd_(0.90)Co_(0.10)FeO_(3),and Nd_(0.90)Ni_(0.10)FeO_(3),*** Freundlich isotherm mode is the best-fit model for NdFeO_(3) to adsorb Cr6+ions from aqueous solutions.

关键词： Optical properties Nanoparticles magnetic properties Perovskites removal efficiency rareearths

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First Search for Pulsed CH maser Emission Stimulated by a Pulsar

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research in Astronomy and Astrophysics 2025年第2期25卷 62-71页

作者： mengting Liu Di Li J.r.Dawson Joel m.Weisberg George Hobbs Ningyu Tang Gan Luo Duo Xu Donghui Quan research Center for Astronomical Computing Zhejiang Laboratory Department of Astronomy Tsinghua University National Astronomical Observatories Chinese Academy of Sciences CSIrO Astronomy & Space Science Australia Telescope National Facility School of mathematical and Physical Sciences and Astrophysics and Space Technologies research Centre Macquarie University Department of Physics and Astronomy Carleton College Department of Physics Anhui Normal University Institut de radioastronomie millimetrique 300 Rue de la Piscine Canadian Institute for Theoretical Astrophysics University of Toronto 60 St.George Street

We present the first search for pulsed CH maser emission potentially stimulated by PSr J1644-4559,conducted using the ultra-wide-bandwidth low-frequency receiver on m.r.iyang,CSIrO's Parkes radio *** targeted three CHΛ-doublet transitions at 3264,3335,and 3349 mHz,with a variability timescale of78 *** detected ten CH emission features at 3335 and 3349 mHz,and seven features at 3264 mHz,during both pulsar-ON and pulsar-OFF *** observed velocities align with the OH emission and absorption reported by a previous study,suggesting a close spatial association between CH and OH *** derived column densities for CH clouds within the Parkes beam.r.nge from 0.05 to 9.8×1013cm-2,indicating that these clouds are likely in diffuse and translucent *** limits for CH column densities within the pulsar beam.r.nged from 0.3 to 9.8×*** of these column densities suggests that CH clouds may exhibit clumpiness and *** significant stimulated emission feature was detected in the optical depth ***,as part of our search for pulsed stimulated emission,we investigated the potential CH absorption of the pulsar signal and found none,in agreement with astrophysical *** upper limits for the potential maser amplification factors towards PSr J1644-4559 at 3264,3335,and 3349 mHz are 1.014,1.009,and 1.009,*** study demonstrates the feasibility of detecting pulsed CH maser emission in the interstellar medium stimulated by pulsar photons.

关键词： (stars:) pulsars: general ISm: molecules masers