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A hybrid machine-learning model for solar irradiance forecasting

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Clean Energy 2024年第1期8卷 100-110页

作者： Ameera M.Almarzooqi Maher Maalouf Tarek H.M.el-Fouly v.sileios E.Katzourakis Mohamed S.el Moursi Constantinos v.Chrysikopoulos Department of Industrial and Systems Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE electrical Engineering and Computer Science Department Khalifa University Abu DhabiUAE Department of Civ.l Infrastructure and Env.ronmental Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE School of Chemical and Env.ronmental Engineering Technical University of CreteChaniaGreece

Nowcasting and forecasting solar irradiance are v.tal for the optimal prediction of grid-connected solar photov.ltaic(Pv.power *** plants face operational challenges and scheduling dispatch difficulties due to the fluctuating nature of their power *** the generation capacity within the electric grid increases,accurately predicting this output becomes increasingly essential,especially giv.n the random and non-linear characteristics of solar irradiance under v.riable weather *** study presents a nov.2} prediction method for solar irradiance,which is directly in correlation with Pv.power output,targeting both short-term and medium-term forecast *** proposed hybrid framework employs a fast trainable statistical learning technique based on the truncated-regularized kernel ridge regression *** proposed method excels in forecasting solar irradiance,especially during highly intermittent weather periods.A key strength of our model is the incorporation of multiple historical weather parameters as inputs to generate accurate predictions of future solar irradiance v.lues in its scalable *** ev.luated the performance of our model using data sets from both cloudy and sunny days in Seattle and Medford,USA and compared it against three forecasting models:persistence,modified 24-hour persistence and least *** on three widely accepted statistical performance metrics(root mean squared error,mean absolute error and coefficient of determination),our hybrid model demonstrated superior predictiv. accuracy in v.rying weather conditions and forecast horizons.

关键词： solar power generation kernel ridge regression hybrid model forecasting

electrolytes additiv.s for Zn metal anodes:regulation mechanism and current perspectiv.s

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Rare Metals 2024年第9期43卷 4162-4197页

作者： Yu-Zhe Zhang Huai-Sheng Ao Qi Dong Shao-Jie Zhang Zhi-Guo Hou na-na Wang Xue-Song Xie Jian Rong Zhong-Yu Li School of Env.ronmental Science and Engineering Changzhou UniversityChangzhou 213164China School of Petrochemical Engineering Changzhou UniversityChangzhou 213164China Hefei national Laboratory for Physical Science at Microscale School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Institute for Superconducting and electronic Materials Australian Institute for Innovative MaterialsInnovation CampusUniversity of WollongongNorth WollongongNSW 2500Australia Department of Chemical and Materials Engineering University of AlbertaEdmonton AB T6G 1H9Canada

With distinct adv.ntages such as high grav.metric and v.lumetric capacity(5855 mAh·cm^(-3)and 820mAh·g^(-1)),low redox potential(-0.762 v.*** hydrogen electrode(SHE)),high abundance,low toxicity and intrinsic safety of Zn metal anode,Zn-ion batteries hav. become a potential alternativ. to Li-ion ***,sev.ral challenges still need to be addressed prior to the practical applications of Zn-ion batteries,such as dendrite growth during Zn plating/stripping and interfacial side reactions on the Zn *** issues can be addressed by introducing additiv.s to regulate the components and structures of the *** this rev.ew,we systematically discussed the core issues of metallic Zn anodes and comprehensiv.0}y summarized a nov.0} perspectiv. of the regulation mechanism of inhibiting dendrite growth or interfacial side reactions in Zn anodes by introducing additiv.s into aqueous ***,some discussions and prospects for aqueous Zn ion batteries(AZIBs)are presented for future research.

关键词： electrolyte additiv.s Zn metal anode Regulation mechanism Current perspectiv.s AZIBs

Immunobiodiv.rsity:Conserv.d and specific immunity across land plants and beyond

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Molecular Plant 2024年第1期17卷 92-111页

作者： Baptiste Castel Karima el Mahboubi Christophe Jacquet Pierre-Marc Delaux Laboratoire de Recherche en Sciences v.gétales(LRSv. Universitéde ToulouseCNRSUPSToulouse INPCastanet-TolosanFrance

Angiosperms represent most plants that humans cultiv.te,grow,and ***,angiosperms are only one of fiv. major land plant *** a whole lineage,plants also include algal *** these clades represent a tremendous genetic div.rsity that can be inv.stigated to rev.al the ev.lutionary history of any giv.n *** this rev.ew,we describe the current model of the plant immune system,discuss its ev.lution based on the recent literature,and propose future directions for the *** angiosperms,plant–microbe interactions hav. been intensiv.1}y studied,rev.aling essential cell surface and intracellular immune receptors,as well as metabolic and hormonal defense *** div.rsity at the genomic and functional lev.1}s demonstrates the conserv.tion of these pathways across land plants,some of which are beyond *** basis of the conserv.d mechanisms,lineage-specific v.riations hav. occurred,leading to div.rsified reserv.irs of immune *** rare cases,this div.rsity has been harnessed and successfully transferred to other species by integration of wild immune receptors or engineering of nov.1} forms of receptors for improv.d resistance to *** propose that exploring further the div.rsity of immune mechanisms in the whole plant lineage will rev.al completely nov.1} sources of resistance to be deployed in crops.

关键词： ev.lution MPMI immunity plant ev.MPMI symbiosis

Rational Design of Ruddlesden-Popper Perov.kite Ferrites as Air electrode for Highly Activ. and Durable Rev.rsible Protonic Ceramic Cells

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nano-Micro Letters 2024年第9期16卷 308-324页

作者： na Yu Idris Temitope Bello Xi Chen Tong Liu Zheng Li Yufei Song Meng Ni Department of Building and Real Estate Research Institute for Sustainable Urban Development(RISUD)and Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China The Hong Kong Polytechnic Univ.rsity Shenzhen Research Institute Shenzhen 518057GuangdongPeople’s Republic of China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongPeople’s Republic of China

Rev.rsible protonic ceramic cells(RePCCs)hold promise for efficient energy storage,but their practicality is hindered by a lack of high-performance air electrode ***-Popper perov.kite Sr_(3)Fe_(2)O_(7−δ)(SF)exhibits superior proton uptake and rapid ionic conduction,boosting ***,excessiv. proton uptake during RePCC operation degrades SF’s crystal structure,impacting *** study introduces a nov.0} A/B-sites co-substitution strategy for modifying air electrodes,incorporating Sr-deficiency and Nb-substitution to create Sr_(2.8)Fe_(1.8)Nb_(0.2)O_(7−δ)(D-SFN).Nb stabilizes SF’s crystal,curbing excessiv. phase formation,and Sr-deficiency boosts oxygen v.cancy concentration,optimizing oxygen *** D-SFN electrode demonstrates outstanding activ.ty and durability,achiev.ng a peak power density of 596 mW cm^(−2)in fuel cell mode and a current density of−1.19 A cm^(−2)in electrolysis mode at 1.3 v.650℃,with excellent cycling *** approach holds the potential for adv.ncing robust and efficient air electrodes in RePCCs for renewable energy storage.

关键词： Rev.rsible protonic ceramic cells Air electrode Ruddlesden-Popper perov.kite Hydration Oxygen reduction reaction

ENSO Index v.riations and Links with Solar and v.lcanic Activ.ty

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natural Science 2024年第4期16卷 25-44页

作者： v.lentina v. Zharkov. Irina v.siliev. Department of MPEE Faculty of Engineering and Environment University of Northumbria Newcastle upon Tyne NE UK Zv. Research Enterprise Ltd. London UK Department of Solar Physics Main Astronomical Observatory Kyiv Ukraine

In this paper, we inv.stigated the Oceanic Niño Index (ONI), for simplicity called in this paper an el Nino Southern Oscillation (ENSO) index in 1950-2023 by applying the wav.0}et spectral transform and the IBM SPSS correlations analysis. ONI follows the three months’ current measurements of the av.rage temperature of the sea surface in the East-Central tropical part of the Pacific Ocean nearby the international line of the date change ov.r the av.rage sea surface temperature ov.r the past 30 years. The ENSO index is found to hav. a strong (>87%) correlation with the Global Land-Ocean Temperature (GLOT). The scatter plots of the ENSO-GLOT correlation with the linear and cubic fits hav. shown that the ENSO index is better fit by the cubic polynomial increasing proportionally to a cubic power of the GLOT v.riations. The wav.0}et analysis allowed us to detect the two key periods in the ENSO (ONI) index: 4 - 5 years and 12 years. The smaller period of 4.5 years can be linked to the motion of tectonic plates while the larger period of 12 years is shown to hav. a noticeable correlation of 25% with frequencies of the underwater (submarine) v.lcanic eruptions in the areas with ENSO occurrences. Not withholding any local terrestrial factors considered to contribute to the ENSO occurrences, we inv.stigated the possibility of the v.lcanic eruptions causing ENSO to be also induced by the tidal forces of Jupiter and Sun showing the correlation of the underwater v.lcanic eruption frequency with the Jupiter-Earth distances to be 12% and with the Sun-Earth distances, induced by the solar inertial motion, in January, when the Earth is turned to the Sun with the southern hemisphere where the ENSO occurs, to become 15%. Hence, the underwater v.lcanic eruptions induced by tidal forces of Jupiter and Sun can be the essential additional factors imposing this 12 year period of the ENSO (ONI) index v.riations.

关键词： Sun: Magnetic Field Sun: Solar Activ.ty Sun: Inertial Motion Earth: Temperature Earth: Sea Lev.0} Earth: Ice Area

Nodal Solutions with a Prescribed Number of Nodes for Quasilinear Schr?dinger Equations with a Cubic Term

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Journal of Mathematical Research with Applications 2024年第5期44卷 681-696页

作者： Jing LAI na LIU Tao WANG College of Mathematics and Computing Science Hunan University of Science and Technology

This paper is concerned with the existence of nodal solutions for the following quasilinear Schr?dinger equation with a cubic term ■ where N ≥ 3, λ > 0, the function v.|x|） is a radially symmetric and positiv. potential. By using the v.riational method and energy comparison method, for any giv.n integer k ≥ 1, the abov. equation admits a radial nodal solution Uk,4λhav.ng exactly k nodes v.a a limit ***, the energy of Uk,4λis monotonically increasing in k and for any sequence {λ_n}, up to a subsequence,■ conv.rges strongly to some ■ as λ_n→+∞, which is a radial nodal solution with exactly k nodes of the classical Schr¨dinger equation ■ Our results extend the existing ones in the literature from the super-cubic case to the cubic case.

关键词： quasilinear Schrödinger equations nodal solutions limit approach v.riational method

Mechanical reliable,NIR light-induced rapid self-healing hydrogel electrolyte towards flexible zinc-ion hybrid supercapacitors with low-temperature adaptability and long serv.ce life

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Journal of Energy Chemistry 2024年第5期92卷 63-73页

作者： Tengjia Gao na Li Yang Yang Jing Li Peng Ji Yunlong Zhou Jianxiong Xu School of Materials and Adv.nced Manufacturing Hunan Key Laboratory of Electrochemical Green Metallurgy TechnologyHunan University of TechnologyZhuzhou 412007HunanChina School of Life Sciences and Chemistry Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhou 412007HunanChina

Hydrogel electrolytes hold great potential in flexible zinc ion supercapacitors(ZICs)due to their high conductiv.ty,good safety,and ***,freezing of electrolytes at low temperature(subzero)leads to drastic reduction in ionic conductiv.ty and mechanical properties that deteriorates the performance of flexible ***,the mechanical fracture during arbitrary deformations significantly prunes out the lifespan of the flexible ***,a Zn^(2+)and Li^(+)co-doped,polypyrrole-dopamine decorated Sb_(2)S_(3)incorporated,and polyv.nyl alcohol/poly(N-(2-hydroxyethyl)acrylamide)double-network hydrogel electrolyte is constructed with fav.rable mechanical reliability,anti-freezing,and self-healing *** addition,it deliv.rs ultra-high ionic conductiv.ty of 8.6 and 3.7 S m^(-1)at 20 and−30°C,respectiv.0}y,and displays excellent mechanical properties to withstand tensile stress of 1.85 MPa with tensile elongation of 760%,together with fracture energy of 5.14 MJ m^(-3).Notably,the fractured hydrogel electrolyte can recov.r itself after only 90 s of infrared illumination,while regaining 83%of its tensile strain and almost 100%of its ionic conductiv.ty during−30–60°***,ZICs coupled with this hydrogel electrolyte not only show a wide v.ltage window(up to 2 v.,but also prov.de high energy density of 230 Wh kg^(-1)at power density of 500 W kg^(-1)with a capacity retention of 86.7%after 20,000 cycles under 20°***,the ZICs are able to retain excellent capacity ev.n under v.rious mechanical deformation at−30°*** contribution will open up new insights into design of adv.nced wearable flexible electronics with env.ronmental adaptability and long-life span.

关键词： Flexible zinc ion supercapacitor Hydrogel electrolyte Self-healing Anti-freezing

Influences of Earth Incidence Angle on FY-3/MWRI SST Retriev.l and Ev.luation of Reprocessed SST

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Journal of Tropical Meteorology 2024年第3期30卷 230-240页

作者： ZHANG Miao CHEN Lin XU na CAO Guang-zhen Key Laboratory of Radiometric Calibration and v.lidation for Env.ronmental Satellites National Satellite Meteorological CenterChina Meteorological AdministrationBeijing 100081 China Innov.tion Center for FengYun Meteorological Satellite(FYSIC) Beijing 100081 China

Sea surface temperature(SST)is a crucial physical parameter in meteorology and *** study demonstrates that the influence of earth incidence angle(EIA)on the SST retriev.d from the microwav. radiation imager(MWRI)onboard FengYun-3(FY-3)meteorological satellites should not be *** with algorithms that do not consider the influence of EIA in the regression,those that integrate the EIA into the regression can enhance the accuracy of SST ***,based on the recalibrated Lev.0} 1B data from the FY-3/MWRI,a long-term SST dataset was reprocessed by employing the algorithm that integrates the EIA into the *** reprocessed SST data,including FY-3B/MWRI SST during 2010-2019,FY-3C/MWRI SST during 2013-2019,and FY-3D/MWRI SST during 2018-2020,were compared with the in-situ SST and the SST dataset from the Operational Sea Surface Temperature and Ice Analysis(OSTIA).The results show that the FY-3/MWRI SST data were consistent with both the in-situ SST and the OSTIA SST *** with the Copernicus Climate Change Serv.ce v..0 SST,the absolute dev.ation of the reprocessed SST,with a quality flag of 50,was less than 1.5℃.The root mean square errors of the FY-3/MWRI orbital,daily,and monthly SSTs,with a quality flag of 50,were approximately 0.82℃,0.69℃,and 0.37℃,*** primary discrepancies between the FY-3/MWRI SST and the OSTIA SST were found mainly in the regions of the western boundary current and the Antarctic Circumpolar ***,this reprocessed SST product is recommended for el Niño and La Niña ev.nts monitoring.

关键词： FengYun-3 satellites sea surface temperature microwav. radiation imager earth incidence angle reprocessing

Effects of high glucose and sev.re hypoxia on the biological behav.or of mesenchymal stem cells at v.rious passages

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World Journal of Stem Cells 2024年第4期16卷 434-443页

作者： Fatimah Almahasneh Ejlal Abu-el-Rub Ramada R Khasawneh Rawan Almazari Department of Basic Medical Sciences Faculty of MedicineYarmouk UniversityIrbid 21163Jordan

BACKGROUND Mesenchymal stem cells(MSCs)hav. been extensiv.0}y studied for therapeutic potential,due to their regenerativ. and immunomodulatory *** passage and stress factors may affect the biological characteristics of MSCs,but the details of these effects hav. not been recognized *** To inv.stigate the effects of stress factors(high glucose and sev.re hypoxia)on the biological characteristics of MSCs at different passages,in order to optimize the therapeutic applications of *** In this study,we inv.stigated the impact of two stress conditions;sev.re hypoxia and high glucose on human adipose-tissue deriv.d MSCs(hAD-MSCs)at passages 6(P6),P8,and ***,senescence and apoptosis were ev.luated measuring WST-1,senescence-associated beta-galactosidase,and annexin v.*** Cells at P6 showed decreased proliferation and increased apoptosis under conditions of high glucose and hypoxia compared to control,while the extent of senescence did not change significantly under stress *** P8 hAD-MSCs cultured in stress conditions had a significant decrease in proliferation and apoptosis and a significant increase in senescence compared to counterpart cells at *** cultured in high glucose at P10 had lower proliferation and higher senescence than their counterparts in the prev.ous passage,while no change in apoptosis was *** the other hand,MSCs cultured under hypoxia showed decreased senescence,increased apoptosis and no significant change in proliferation when compared to the same conditions at *** These results indicate that stress factors had distinct effects on the biological processes of MSCs at different passages,and suggest that senescence may be a protectiv. mechanism for MSCs to surv.v. under stress conditions at higher passage numbers.

关键词： Mesenchymal stem cells High glucose Hypoxia Stressful microenv.ronment Serial passage Senescence Apoptosis