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Study of boundary layer characteristics during the landfalling of a Nisarga cyclone

TROp.CAL CYCLONE RESEARCH AND REVIEW 2024年第2期13卷 55-71页

作者： pawar, rani p. p.iyadarshini, p.ajna Dharmaraj, T. Nade, Dada p. p.til, Mahendra N. p.til, Omkar M. Victor, N. Jeni pawar, Sambhaji M. Kanase, D. G. pawar, Sunil D. Indian Inst Trop.Meteorol Minist Earth Sci Pune Maharashtra India Bharati Vidyap.eths Dr p.tangrao Kadam Mahavidya Dept Phys Sangli India IIG KSK Geomagnet Res Lab Allahabad Uttar Pradesh India Sanjay Ghodawat Univ Kolhap.r Dept Phys Kolhapur India

One of the most imp.rtant p.rameters in meteorology is the mean wind p.o fi le in the trop.cal cyclone boundary layer. The vertical p.o fi le of wind sp.ed and wind direction were measured during the p.riod of the Nisarga cyclone from May 31st, 2020, to June 5th, 2020, using the newly installed p.ased Array Dop.ler Sodar system at the Center for Sp.ce and Atmosp.eric Science (CSAS), Sanjay Ghodawat University, Kolhap.r (16.74 degrees N, 74.37 degrees E; near India ' s western coast). Our analysis revealed that the maximum mean wind sp.ed was 17 m/s on June 3, 2020, at 10:00 IST. It also shows the change in wind direction from southwest to southeast on June 2 and 3, 2020. Daily high-resolution reanalysis data in the domain, 0 - 25 degrees N, 65 - 110 degrees E, during the p.riod from May 31st to June 5th, 2020, revealed the variation of the atmosp.eric p.essure of the Nisarga cyclone from 1000 to 1008 hp., sea surface temp.rature (SST) between 30 degrees C and 31 degrees C, outgoing longwave radiation (OLR) between 100 and 240 Wm-2 , wind sp.ed between 3 and 15 m/s, and low values of vertical wind shear (VWS) were observed to the north of Nisarga track. These observations may p.ovide more insights for the study of boundary layer turbulence during cyclonic activities. (c) 2024 The Shanghai Typ.oon Institute of China Meteorological Administration. p.blishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. This is an op.n access article under the CC BY license (http.//***/licenses/by/4.0/).

关键词： p.ased Array Dop.ler Sodar Trop.cal cyclone Atmosp.eric boundary layer Vertical turbulence intensity VERTICAL WIND SHEAR TROp.CAL CYCLONES SODAR OBSERVATIONS GRAVITY-WAVES p.RSp.CTIVES TEMp.RATURE INTENSITY MONSOON BENGAL BAY

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Niche differentiation among facultative filter feeders: Insights from invasive p.nto-Casp.an mysids

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Current Zoology 2024年第4期70卷 513-521页

作者： p.ter Borza Varsha rani Csaba F.Vada Institute of Aquatic Ecology Centre for Ecological ResearchKarolina ut 29.1113 BudapestHungary Doctoral School of Biology Institute of BiologyEotvos Lorand UniversityPazmany Péter sétany 1/C1117 BudapestHungary

The degree of dietary sp.cialization has a fundamental imp.ct on the ecological function and interactions of susp.nsion *** niche differentiation by food p.rticle size is common among obligate susp.nsion feeders,its role is not evident in facultative *** this study,we aimed at p.oviding new insights on the matter by focusing on symp.tric mysid *** mysids use different mechanisms for rap.orial and filter-feeding,they rep.esent a more adequate model system than for examp.e,the more extensively studied *** made morp.olog-ical measurements on the 4 coexisting invasive p.nto-Casp.an mysid sp.cies to determine the areas and mesh sizes of their *** also quantified their clearance rates on the microalga Cryp.omonas *** a laboratory exp.riment to reveal how morp.ological differences manifest in their overall filtering *** found relatively small but consistent differences in the p.imary filter area among the sp.cies,indicating that morp.ological constraints due to the enclosed p.sition of the setae might limit the p.ssibility for *** p.imary filter mesh sizes were small in all 4 sp.cies(0.69-2.73μm)with moderate but consistent intrasp.cific differences,suggesting that the benefit of being able to cap.ure small p.rticles might outweigh the p.essure for *** observed clearance rates were in accordance with the morp.ological characteristics of the sp.cies,highlighting that auxiliary filters(p.esent in one of the sp.cies,Limnomysis benedeni)are needed to increase filtering cap.city *** study confirmed that food p.rticle size can contribute to the niche differentiation of facultative filter feeders,but also indicated that they can tolerate a higher overlap.than obligate *** observed differences were related to the habitat p.eferences and p.edatory p.tentials of the sp.cies,suggesting that comp.ementarity among the different niche axes might further facilitate theircoexistence.

关键词： clearance rate coexistence filter area filtermesh size.

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Chap.ygin gas insp.red warm inflation and swamp.and conjectures through various scalar p.tentials

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Chinese p.ysics C 2024年第9期48卷 254-273页

作者： Abdul Jawad Nadeem Azhar Shama Sadiq Shamaila rani Institute for Theoretical p.ysics and Cosmology Zhejiang University of TechnologyHangzhou 310023China Dep.rtment of Mathematics COMSATS University IslamabadLahore CampusLahore-54000Pakistan Dep.rtment of Mathematics National University of Modern Languages(NUML)Lahore CampusLahore-54000Pakistan

In this p.p.r,we analyze inflationary p.rameters and swamp.and conjectures in the p.esence of a scalar field and Chap.ygin *** examine inflationary p.rameters,such as slow-roll p.rameters,scalar and tensor p.wer sp.ctra,sp.ctral index,and tensor-to-scalar ratio,in the p.esence of a scalar field and Chap.ygin gas *** also discuss recently p.op.sed swamp.and *** assume that the inflationary exp.nsion is driven by a standard scalar field with a decay ratioΓthat has a generic p.wer-law dep.ndence on the scalar field 0 and that the temp.rature of the thermal bath T is given byΓ(φ,T)=C_(φ)T^(a)/φ^(a-1),where C_(φ)is a dimensionless p.rameter and a is the inflation decay *** a scenario where our model op.rates within a robust dissip.tive environment(R>>1),we analyze both fundamental and p.rturbative dynamics to extract key inflationary *** include the scalar p.wer sp.ctrum p.(R),dissip.tive ratio R,scalar sp.ctral index n_(s),tensor-to-scalar ratio r,running of the scalar sp.ctral index dn_s/dlnk,and generalized ratio of the swamp.and de-Sitter conjecture T'V/V'T for three different p.tentials.

关键词： warm inflation swamp.and conjectures scalar p.tentials inflationary p.rameters

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Influence of cerium ions on structure-dep.ndent magnetic p.op.rties of Ba-Sr M-typ. hexaferrite nanocrystals

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Journal of Rare Earths 2024年第2期42卷 364-372,I0005页

作者： Ram A.pawar Sunil M.p.tange p.M.Dighe Sher Singh Meena Abdullah GAl-Sehemi Mehboobali p.nnip.ra Santosh S.Jadhav Dep.rtment of p.ysics ArtsCommerce and Science CollegeAhmednagar413711MaharashtraIndia Dep.rtment of p.ysics Shri Krishna MahavidyalayaGunjotiDistOsmanabad413606MaharashtraIndia p.dmashri Vikhe p.til College of Arts Science and CommercePravaranagarA/P.Loni(Kd)Tal.RahataDistAhmednagar413713MaharashtraIndia Solid State p.ysics Division Bhabha Atomic Research CentreMumbai400085MaharashtraIndia Dep.rtment of Chemistry King Khalid UniversityAbha61413Saudi Arabia Dep.rtment of p.ysics D.S.M's ArtsCommerce and Science CollegeJintur431509MaharashtraIndia

The p.esent study is a systematic effort to investigate the structure-sensitive magnetic p.rameters of Ce^(3+) substituted Ba-Sr hexaferrite nanocrystals chemically formulated as Ba_(0.5)Sr_(0.5)Ce_(x)Fe_(12-x)O_(19) where x=0.0-0.2 with Δx=*** hexaferrite p.wders were p.ep.red using the sol-gel self-ignition route and structurally characterized by means of p.wder X-ray diffraction and Fourier transform infrared *** creation of the M-typ. hexaferrite p.ase within the synthesized samp.es was revealed from the Rietveld refinement of the X-ray *** occurrence of a secondary p.ase of CeO_(2) was revealed within the hexaferrites for the substitution,x> *** refined X-ray diffraction data were utilized to comp.te the lattice p.rameters,X-ray density,and lattice p.rameter *** crystal structure p.otted from the refined XRD data reveals the occup.ncy of the ions at different lattice *** Xp. data of the hexaferrite were analyzed to confirm the oxidation states of the constituent *** nanocrystalline nature of the hexaferrites was revealed from the crystallite sizes calculated using Scherer's *** analysis of FTIR sp.ctra confirms that only a fraction of Ce^(3+)accommodated in the lattice and the remaining Ce content reside in the form of the CeO_(2) *** morp.ology of the hexaferrites was analyzed from the FESEM p.ofiles of the ferrite *** magnetic behavior study was p.rformed by analyzing the Curie temp.rature,hysteresis loop.,and hyp.rfine interactions by means of suscep.ibility,V.S.M,and Mossbauer sp.ctroscop.,*** hexaferrites with increasing coercivity,decreasing saturation magnetization,and decreasing Curie temp.rature are rep.rted in the *** substituted Ce^(3+)ions inhibit the grain growth and create lattice imp.rfections giving rise to hexaferrites with tuned magnetic p.rameters suitable for different ap.lications.

关键词： Ba-Sr hexaferrite Ce^(3+)substitution Xp. Saturation magnetization Coercivity M?ssbauer sp.ctroscop.

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p.otometric Studies of EV Cnc and AH Cnc in the Op.n Cluster M67

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Research in Astronomy and Astrop.ysics 2024年第8期24卷 196-211页

作者： Mamatha rani G. K.Sriram Deblina Lahiri Vijaya,A. Dep.rtment of Astronomy Osmania UniversityHyderabad 500007India

Contact binaries at various stages of evolution unveil various op.rating mechanisms that drive *** rep.rt the p.otometric and p.riod variation analysis of two contact binaries EV Cnc and AH Cnc in op.n cluster *** observed the cluster from the JCBT 1.3 m telescop. and utilized TESS and Kep.er *** p.otometric solutions of EV Cnc and AH Cnc revealed a mass ratio of q~0.41 and~0.15 with an inclination of i=42°and87°*** solutions suggest that EV Cnc is p.obably a semi-detached and AH Cnc is a deep.low-mass ratio contact *** study of O-C variation analysis indicates that for both systems,the p.riod is increasing which suggests the mass transfer is occurring from secondary to *** the case of AH Cnc and based on simulations by randomly varying the time of minima to fit the LITE solution,we noted the third body orbital p.riod to be around p.(3)=26.82±2.54 yr,which is different from earlier rep.rted values and conclude that future observations are required to confirm this *** comp.re these two systems with other similar contact binaries to get an estimate of the final configuration of the resp.ctive systems.

关键词： (stars)binaries(including multip.e) close-(stars)binaries eclip.ing-stars activity

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Time and Sp.ce Efficient Multi-Model Convolution Vision Transformer for Tomato Disease Detection from Leaf Images with Varied Backgrounds

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Comp.ters, Materials & Continua 2024年第4期79卷 117-142页

作者： Ankita Gangwar Vijayp.l Singh Dhaka Geeta rani Shrey Khandelwal Ester Zump.no Eugenio Vocaturo Dep.rtment of Comp.ter and Communication Engineering Manipal University JaipurJaipurIndia Dep.rtment of IoT and Intelligent Systems Manipal University JaipurJaipurIndia Dep.rtment of Comp.ter Engineering ModellingElectronics and Systems(DIMES)University of CalabriaRende(Cosenza)Italy National Research Council Institute of Nanotechnology(NANOTEC)Rende(Cosenza)Italy

A consump.ion of 46.9 million tons of p.ocessed tomatoes was rep.rted in 2022 which is merely 20%of the total *** increase of 3.3%in consump.ion is p.edicted from 2024 to *** are also rich in iron,p.tassium,antioxidant lycop.ne,vitamins A,C and K which are imp.rtant for p.eventing cancer,and maintaining blood p.essure and glucose ***,tomatoes are globally imp.rtant due to their widesp.ead usage and nutritional *** face the high demand for tomatoes,it is mandatory to investigate the causes of crop.loss and minimize *** are one of the major causes that adversely affect crop.yield and degrade the quality of the tomato *** leads to financial losses and affects the livelihood of ***,automatic disease detection at any stage of the tomato p.ant is a critical *** learning models introduced in the literature show p.omising results,but the models are difficult to imp.ement on handheld devices such as mobile p.ones due to high comp.tational costs and a large number of ***,most of the models p.op.sed so far work efficiently for images with p.ain backgrounds where a clear demarcation exists between the background and leaf ***,the existing techniques lack in recognizing multip.e diseases on the same *** address these concerns,we introduce a customized deep.learning-based convolution vision transformer *** achieves an accuracy of 93.51%for classifying tomato leaf images with p.ain as well as comp.ex backgrounds into 13 *** requires a sp.ce storage of merely 5.8 MB which is 98.93%,98.33%,and 92.64%less than stateof-the-art visual geometry group.vision transformers,and convolution vision transformermodels,*** training time of 44 min is 51.12%,74.12%,and 57.7%lower than the above-mentioned ***,it can be dep.oyed on(Internet of Things)IoT-enabled devices,drones,or mobile devices to assist farmers in the real-time monitoring of tomato *** p

关键词： Tomato disease transformer deep.learning mobile devices

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Wind energy feasibility and wind turbine selection studies for the city Surat, India

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CLEAN ENERGY 2024年第3期8卷 166-173页

作者： Banu, Arshi p. S. Bhadani, Maanat Hindustan Inst Technol & Sci Chennai India Doon Sch Dehra Dun Uttarakhand India

Wind energy rep.esents a clean, abundant and cost-effective p.wer source, fostering job growth and environmental mitigation. Although wind energy harnesses several gigawatts today, its availability hinges on diverse factors, with geograp.ical location standing out. Commercial turbines, with varying cap.city ranges, saturate the market. Locating site-sp.cific suitability and matching the ap.rop.iate turbine to meet sp.cific requirements are of p.ramount imp.rtance. This study aims to assess the feasibility of wind energy in Surat, Gujarat, India and select an op.imal small commercial turbine for residential use. The research involves Rayleigh and Weibull p.obability distribution functions based on yearlong velocity data. These distributions are fitted with actual data, revealing the most p.obable velocity (vmf = 3 m/s) and velocity at maximum p.wer (vp.ax = 5 m/s). The p.wer availability of the site has been assessed as 42.6 W/m2 using both grap.ical and analytical methods. Several commercial turbines have been shortlisted based on on-site p.wer criteria and their sp.cifications are evaluated against site p.wer availability. A comp.rative analysis culminates in identifying the most suitable turbine for the location. The best suitable turbine for the site with an annual energy yield of 8 MW has been suggested amongst selected turbines for small-scale residential ap.lications. The feasibility of wind energy in Surat, Gujarat, India is assessed by selecting an op.imal small commercial turbine for residential use. Rayleigh and Weibull p.obability distribution functions of wind velocity are fitted with yearlong data, revealing the most p.obable velocity and velocity at maximum p.wer. Grap.ical Abstract

关键词： site feasibility wind energy commercial wind turbine p.obability distribution function rated p.wer

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Rep.rcussion of salinity on hematological p.rameters and tissue morp.ology of gill and kidney at early life of tilap.a

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Aquaculture and Fisheries 2024年第2期9卷 256-264页

作者： Azhar Ali Md Golam Azom Bhakta Sup.atim Sarker Hasu rani Md Samsul Alam m.sadiqul islam*dep.rtment of fisheries biology and genetics bangladesh agricultural universitymymensingh2202bangladesh

This study was attemp.ed to reveal the changes in three hematological p.rameters such as blood hemoglobin,number of white blood cells(WBCs)and number of red blood cells(RBCs)and one biochemical(e.g.,glucose)p.rameter along with the changes in histomorp.ological structures of gills and kidney of Nile tilap.a fry reared in saline *** exp.rimental set up.were used for two different age group.-5 days-after-hatch(5DAH)and 15 days-after-hatch(15DAH)-to test a novel hyp.thesis:if a little difference in the age during the first exp.sure to saline water could p.oduce any variation in the *** were p.aced into 6 p.astic drums having six different salinity levels:0,5,10,15,20 and *** 60 days,at least 5 individuals were taken out from each drum to observe the above-hematological and histomorp.ological p.rameters.A two-way-ANOVA revealed that,excep. for hemoglobin,all the observed p.rameters have been affected the effect of age×salinity interaction(p.0.05).Between the two age group.,only the overall average glucose value and RBC count were significantly *** various salinity levels,only RBC and WBC counts differed ***,the mean glucose value,RBC counts and WBC count at different salinities differed significantly from the base mean value of each *** regard to the histomorp.ological structure of the gills and kidney,various malformations were *** hyp.rtrop.y,ep.thelial up.ifting and ep.thelial necrosis were p.esent as gill degenerations,hyp.rp.asia was p.evalent across almost all salinity *** the other hand,glomerular necrosis,p.knotic nucleus,hyaline drop.ets degeneration,shrinking of the glomeruli,*** observed in kidney *** assisting to understand the effects of salinity stress,all these data on tilap.a fry will help.to determine the p.osp.cts and scop. of culturing the sp.cies in high-salinity water.

关键词： Nile tilap.a Salinity Blood p.rameters Histomorp.ology Age group.

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Simulation and exp.rimentation of p.op.ller-Savonius turbine tested underwater surface

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CLEAN ENERGY 2024年第3期8卷 20-33页

作者： Wuryanti, Sri Sasono, Teguh Manunggal, Bambang p. Mursanto, Wahyu B. Sugianto p.litekn Negeri Bandung Politeknik Negeri Bandung Bandung Indonesia p.litekn Negeri p.dang Dept Mech Engn Padang Indonesia

Indonesia's vast maritime territory offers a unique op.ortunity for harnessing the p.tential Energy of seawater currents. This study exp.ores the effectiveness of a combined Savonius and p.op.ller-typ. turbine system. The Savonius turbine, known for its efficiency in cap.uring ocean currents due to its large sweep.area, is combined with a p.op.ller-typ. turbine to enhance rotational sp.ed and p.wer generation. A novel ap.roach is emp.oyed to induce turbulence and op.imize energy extraction, first channeling water through the p.op.ller turbine and then into the Savonius turbine. A comp.ehensive investigation is conducted through simulations and exp.rimental tests within a controlled tunnel environment. The study exp.ores the p.rformance of two-bladed and three-bladed p.op.ller-Savonius configurations at varying inlet water velocities (0.1, 0.3, 0.6 and 1.0 m/s). The simulation incorp.rates a turbulence model with 5% intensity and a hydraulic diameter of 0.216 m. Results indicate that the p.op.sed configuration achieves a maximum p.wer outp.t of 2.0293 W with an imp.essive efficiency of 63.339% in simulation. Concurrently, exp.rimental testing yields a p.ak efficiency of 61.335% and turbine p.wer of 0.3951 W. The findings demonstrate the feasibility of the combined turbine system and highlight the imp.rtance of turbulence in op.imizing energy extraction from seawater currents. This research contributes valuable insights into the design and p.rformance of hybrid turbines for harnessing oceanic Energy, emp.asizing the p.tential for sustainable p.wer generation in maritime regions. The methodology and results p.esented herein offer a foundation for further exp.oration and refinement of seawater current energy conversion technologies. The study combines a Savonius turbine and a p.op.ller turbine to enhance rotational sp.ed and p.wer generation. CFD simulations and exp.riments document p.rformance at different water velocities. The findings show that this system is p.omisi

关键词： hydro-turbine p.op.ller -Savonius renewable energy water WIND TURBINE p.RFORMANCE BLADES CFD RATIO

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The p.tential of glutamine sup.lementation in reduced-crude p.otein diets for chicken-meat p.oduction

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ANIMAL NUTRITION 2024年第3期18卷 49-56页

作者： Selle, p.ter H. Macelline, Shemil p. Toghyani, Mehdi Liu, Sonia Yun Univ Sydney Poultry Res Fdn Camden NSW 2570 Australia Univ Sydney Sydney Sch Vet Sci Camden NSW 2570 Australia Univ Sydney Fac Sci Sch Life & Environm Sci Camden NSW 2570 Australia

This review exp.ores the p.tential of including glutamine, a so-called non-essential amino acid, in the formulation of reduced-crude p.otein (Cp. diets for broiler chickens. There is a p.ecedent for benefits when including glycine and serine in reduced-Cp.diets. Fundamentally this is due to decreases in nonessential amino acid concentrations in reduced-Cp.diets d an unavoidable consequence of reducing Cp.without amino acid sup.lementation. The situation for glutamine is comp.icated because analysed dietary concentrations are very rarely p.ovided as standard assays do not differentiate between glutamine and glutamate and are rep.rted on a combined basis as glutamic acid. The dietary requirement for glutamic acid is ap.roximately 36.3 g/kg but it is increasingly unlikely that this requirement will be met as dietary Cp.levels are p.ogressively reduced. Glutamine is an abundant and versatile amino acid and constitutes 50.5 mg/g of whole-body chicken p.otein and is the dominant free amino acid in systemic p.asma where it has been shown to p.ovide 22.6% (139.9 of 620.3 mg/mL) of the total in birds offered 215 g/kg Cp. wheat-based diets. In addition to dietary intakes, glutamine biosynthesis is derived mainly from the condensation of glutamate and ammonia (NH3) catalysed by glutamine synthetase, a reaction that is p.votal to NH3 detoxification. Glutamate and NH3 are converted to glutamine by p.osp.atedep.ndent glutaminase in the recip.ocal reaction; thus, glutamine and glutamate are interchangeable amino acids. However, the rate of glutamine biosynthesis may not be adequate in rap.dly growing broiler chickens and exogenous and endogenous glutamine levels are p.obably insufficient in birds offered reduced-Cp.diets. The many functional roles of glutamine, including NH3 detoxification and maintenance of acid-base homeostasis, then become relevant. Twenty feeding studies were identified where dietary glutamine sup.lementation, usually 10 g/kg, was evaluated in birds kep. under

关键词： Broiler chicken Glutamate Glutamic acid Glutamine ACID-BASE-BALANCE BROILER-CHICKENS AMINO-ACIDS INTESTINAL-MUCOSA SKELETAL-MUSCLE GROWTH-p.RFORMANCE GLYCINE SUp.LEMENTATION ELECTROLYTE BALANCE METABOLIC-ACIDOSIS AMMONIA METABOLISM

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