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Ferromagnetic Resonance in Gd/Co Multilayer

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Chinese physics Letters 2001年第7期18卷 973-975页

作者： A.v.svalov j.M.Barandiarán v.O.vas’kovskiy G.v.Kurlyandskaya L.Lezama n.G.Bebenin j.Gutiérrez D.schmool Ural state University Lenin Ave.51620083 EkaterinburgRussia Universidad del paIs vasco Upv-EHU Facultad de Ciencias Apdo.64448080 BilbaoSpain Institute of Metal physics Ural Division of RASKovalevskaya str.18GSP-170620219 EkaterinburgRussia Laboratory de Magnetisme et d’Optique ptique CNRSUniversitéde Versailles-Saint Quentin-CNRSBatiment Fermat45 Avenue des Etats-Unis78035 Versalles CedexFrance

Magnetometric and ferromagnetic resonance(MFR)measurements have been performed on the polycrystalline multilayered structure,[Gd(7.5 nm)/Co(3 nm)]*** temperature dependence of magnetization of the sample suggests a compensation temperature Tcomp in the region of 240 K,implying that the Co and Gd layers are antiferromagnetically *** FMR curves are strongly temperature dependent,particularly in the vicinity of Tcomp.

关键词： magnetization ferromagnetic polycrystalline

Analysis of soil moisture variation by forest cover structure in lower western Himalayas, India

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journal of Forestry Research 2013年第2期24卷 317-324页

作者： j. v. Tyagi nuzhat Qazi s. p. Rai M. p. singh national Institute of Hydrology Forest Research Institute

soil moisture affects various hydrological processes, including evapotranspiration, infiltration, and runoff. Forested areas in the lower western Himalaya in India constitute the headwater catchments for many hill streams and have experienced degradation in forest cover due to grazing, deforestation and other human activities. This change in forest cover is likely to alter the soil moisture regime and, consequently, flow regimes in streams. The effect of change in forest cover on soil moisture regimes of this dry region has not been studied through long term field observations. We monitored soil matric potentials in two small watersheds in the lower western Himalaya of India. The watersheds consisted of homogeneous land covers of moderately dense oak forest and moderately degraded mixed oak forest. Observations were recorded at three sites at three depths in each watershed at fortnightly intervals for a period of three years. The soil moisture contents derived from soil potential measurements were analyzed to understand the spatial, temporal and profile variations under the two structures of forest cover. The analysis revealed large variations in soil moisture storage at different sites and depths and also during different seasons in each watershed. Mean soil moisture storage during monsoon, winter and summer seasons was higher under dense forest than under degraded forest. Highest soil moisture content occurred at shallow soil profiles, decreasing with depth in both watersheds. A high positive correlation was found between tree density and soil moisture content. Mean soil moisture content over the entire study period was higher under dense forest than under degraded forest. This indicated a potential for soil water storage under well managed oak forest. Because soil water storage is vital for sustenance of low flows, attention is needed on the management of oak forests in the Himalayan region.

关键词： soil moisture oak forest soil matric potential tree density degraded forest

The influence of monomer concentration on the optical properties of electrochemically synthesized polypyrrole thin films

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journal of semiconductors 2013年第10期34卷 13-18页

作者： j.v.Thombare M.C.Rath s.H.Han v.j.Fulari Holography and Material Research Laboratory Department of PhysicsShivaji UniversityKolhapur-416 004India Radiation and photochemistry Division BARCMumbaiIndia Department of Chemistry Hanyang UniversitySeoulSouth Korea

polypyrrole （ppy） thin films were deposited on stainless steel and ITO coated glass substrate at a constant deposition potential of 0.8 v versus saturated calomel electrode （sCE） by using the electrochemical polymerization method. The ppy thin films were deposited at room temperature at various monomer concentrations ranging from 0.1 M to 0.3 M pyrrole. The structural and optical properties of the polypyrrole thin films were investigated using an X-ray diffractometer （XRD）, FTIR spectroscopy, scanning electron microscopy （sEM）, and ultravioletvisible （Uv-vis） spectroscopy. The XRD results show that polypyrrole thin films have a semi crystalline structure. Higher monomer concentration results in a slight increase of crystallinity. The polypyrrole thin films deposited at higher monomer concentration exhibit high visible absorbance. The refractive indexes of the polypyrrole thin films are found to be in the range of 1 to 1.3 and vary with monomer concentration as well as wavelength. The extinction coefficient decreases slightly with monomer concentration. The electrochemically synthesized polypyrrole thin film shows optical band gap energy of 2.14 ev.

关键词： polypyrrole electrochemical polymerization method structure optical properties

numerical modeling of nonlinear sloshing of liquid in a container coupled with barge subjected to regular excitation

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journal of Hydrodynamics 2019年第5期31卷 999-1010页

作者： j.j.stephen s.A.sannasiraj v.sundar Department of Ocean Engineering Indian Institute of Technology MadrasChennai 600036India

The sloshing phenomenon of liquid in a partially filled tank mounted rigidly within a barge exposed to regular wave field has been considered for numerical *** paper details the numerical scheme developed in time domain to study the interaction of wave induced barge motion with sloshing oscillations in a partially filled *** sloshing time history results obtained from the numerical scheme adopted are validated with experimental measurements of nasar et al.(2008)The harmonics present in the sloshing oscillation for the liquid fill levels(25%,50%and 75%)have been analyzed.

关键词： Floating barge sloshing finite element method impulse response function coupled analysis

synthesis and graphitization of resole resins by ferrocene

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progress in natural science:Materials International 2019年第1期29卷 71-80页

作者： s.I.Talabi A.p.Luz v.C.pandolfelli j.s.Bernardes A.A.Lucas Federal University of s?o Carlos Materials Engineering Department University of Ilorin Materials and Metallurgical Engineering Department national nanotechnology Laboratory (Lnnano) National Center for Energy and Materials (CNPEM)

Commercial(Rs) and laboratory synthesized resoles(LsRs) containing 3–5 wt% ferrocene have been used to study the development of thermosetting resin compositions as binder materials for carbon-containing refractories(CCRs) production. The LsRs were developed based on formaldehyde to phenol 1.5 mol.%(1.5 Rs) and 2.0 mol.%(2 Rs). Microstructure and oxidation resistance of carbons derived from plain and modified resins have been compared. Chemical structure of the resins was studied using Fourier Transform InfraRed-Attenuated Total Reflection(FTIR-ATR) spectroscopy. X-ray photoelectron spectroscopy was used to examine chemical changes during heat treatment of the modified products. Flow behavior of plain and formulated resins has been measured under isothermal condition. Rheology measurement results show that the selected amount of ferrocene did not affect the resin near-newtonian fluid behavior and processability during refractory production. X-ray diffraction(XRD) analysis and transmission Electron Microscope(TEM) were used to characterize the derived carbon samples after thermal treatment of the resins. The results demonstrate that ferrocene is an excellent additive for crystallizing resoles carbon. The presence of fringes in TEM images indicates the graphitized carbon microstructure. The carbon reactivity in an oxidizing environment was also determined via thermogravimetric analyzer(TGA). several factors, such as bond strength and atoms arrangement, have been found to control the carbonized modified-resin oxidation resistance.

关键词： Resole resins synthesis Graphitization Microstructure Oxidation resistance

用于诊断肝细胞癌的肝脏影像报告及数据系统2018版5类：一项最新Meta分析

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国际医学放射学杂志 2024年第3期 373-374页

作者： s.Lee Y.Y.Kim j.shin Y.H.Roh j.Y.Choi v.Chernyak 吴玉平

摘要目的该项更新的Meta分析旨在确定使用肝脏影像报告和数据系统（LI-RADs）2018版本（v2018）的LI-RADs LR-5类对肝细胞癌（HCC）的诊断能力，并通过评估成像方

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The history and future of the biological resources of the Caspian and the Aral seas

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journal of Oceanology and Limnology 2018年第6期36卷 2061-2084页

作者： n.v.ALADIn T.CHIDA Yu.s.CHUIKOv Z.K.ERMAKHAnOv Y.KAWABATA j.KUBOTA p.MICKLIn I.s.pLOTnIKOv A.O.sMUROv v.F.ZAITZEv Zoological Institute RAs St.-Petersburg 199034Russia nagoya University of Foreign studies Nisshin 470-0197Japan Astrakhan state University Astrakhan 414056Russia Aral Branch of Kazakh Research Institute of Fishery Aralsk 120100Kazakhstan Tokyo University of Agriculture and Technology Fuchu Tokyo 183-8509Japan national Institutes for the Humanities Tokyo 105-0001Japan Western Michigan University Kalamazoo 49008USA Astrakhan state Technical University Astrakhan 414056Russia

The term ‘biological resources' here means a set of organisms that can be used by man directly or indirectly for consumption. They are involved in economic activities and represent an important part of a country's raw material potential. Many other organisms are also subject to rational use and protection. They can be associated with true resource species through interspecific relationships. The Caspian and Aral seas are continental water bodies, giant saline lakes. Both categories of species are represented in the benthic and pelagic communities of the Caspian and Aral seas and are involved in human economic activities. The most important biological resource of the Caspian sea and the Aral sea is their ichthyofauna, represented by both aboriginal species and species introduced by man in the 20 th century. Among invertebrates, the main biological resource of these saline lakes is the brine shrimp A rtemia. The physical state of the Caspian as a water body is relatively stable but its biological resources are very seriously af fected by irrational use. The Aral sea since the second half of the 20 t h century has experienced catastrophic anthropogenic regression, which has led to the almost complete loss of its biological resources due to salinization. However, thanks to efficacious engineering measures, it has now become possible to preserve its northern part(small Aral) and rehabilitate it, lowering the salinity to its former state. The result has been the restoration of its fish biological resources. In the southern part of Aral(Large Aral), which turned into a group of separated hypersaline reservoirs, the only resource species currently available is the brine shrimp A rtemia. The main environmental threats for biological resources of the future Caspian and Aral as well as potential solutions are considered.

关键词： Caspian sea Aral sea biological resources fauna fish invertebrates

A Hybrid Artificial Intelligence Model for skin Cancer Diagnosis

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Computer systems science & Engineering 2021年第5期37卷 233-245页

作者： v.vidya Lakshmi j.s.Leena jasmine Research scholar Anna UniversityChennaiTamil Nadu600025India velammal Engineering college ChennaiTamil Nadu600066India

Melanoma or skin cancer is the most dangerous and deadliest *** the incidence and mortality rate of skin cancer increases worldwide,an automated skin cancer detection/classification system is required for early detection and prevention of skin *** this study,a Hybrid Artificial Intelligence Model(HAIM)is designed for skin cancer *** uses diverse multi-directional representation systems for feature extraction and an efficient Exponentially Weighted and Heaped Multi-Layer perceptron(EWHMLp)for the *** the wavelet transform is a powerful tool for signal and image processing,it is unable to detect the intermediate dimensional structures of a medical *** the proposed HAIM uses Curvelet(CurT),Contourlet(ConT)and shearlet(sheT)transforms as feature extraction *** MLp is very flexible and well suitable for the classification problem,the learning of weights is a challenging ***,the optimization process does not converge,and the model may not be *** overcome these drawbacks,EWHMLp is *** show that the combined qualities of each transform in a hybrid approach provides an accuracy of 98.33%in a multi-class approach on pH2 database.

关键词： skin cancer multi-directional systems curvelet contourlet shearlet multi-layer perceptron

physiological and perceptual responses to sprint interval exercise using arm versus leg cycling ergometry

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sports Medicine and Health science 2024年第4期6卷 385-393页

作者： Todd A.Astorino shealin pierce Madisen B.piva Richard s.Metcalfe niels B.j.vollaard Department of Kinesiology CSU—San MarcosSan MarcosCAUSA Applied sports TechnologyExercise and Medicine(A-STEM)Research CenterSwansea UniversitySwanseaUK Faculty of Health sciences and sport University of StirlingStirlingUK

Increases in power output and maximal oxygen consumption(v_O2max)occur in response to sprint interval exercise(sIE),but common use of“all-out”intensities presents a barrier for many ***,lower-body sIE is not feasible for all *** compared physiological and perceptual responses to supramaximal,but“nonall-out”sIE between leg and arm cycling ***-four active adults(mean±sD age:[25±7]y;cycling vO_(2)max:[39±7]mL·kg^(-1)·min^(-1))performed incremental exercise using leg(LCE)and arm cycle ergometry(ACE)to determine vO_(2)max and maximal work capacity(Wmax).subsequently,they performed four 20 s bouts of sIE at 130% Wmax on the LCE or ACE at cadence=120-130 rev/min,with 2 min recovery between *** exchange data,heart rate(HR),blood lactate concentration(BLa),rating of perceived exertion(RpE),and affective valence were *** showed significantly lower(psolute mean([1.24±0.31]L·min^(-1) vs.[1.59±0.34]L·min^(-1);d=1.08)and peak vO_(2)([1.79±0.48]L·min^(-1) vs.[2.10±0.44]L·min^(-1);d=0.70)with ACE versus ***,ACE elicited significantly higher(pve mean([62%±9%]vO_(2)max vs.[57%±7%]vO_(2)max,d=0.63)and peak vO_(2)([88%±10%]vO_(2)max vs.[75%±10%]vO_(2)max,d?1.33).post-exercise BLa was significantly higher([7.0±1.7]mM vs.[5.7±1.5]mM,p=0.024,d?0.83)for LCE versus *** was no significant effect of modality on RpE or affective valence(p>0.42),and lowest affective valence recorded(2.0±1.8)was considered“good to fairly good”.Data show that non“all-out”ACE elicits lower absolute but higher relative HR and vO_(2) compared to *** aversive perceptual responses could make this non-all-out modality feasible for inactive adults.

关键词： High intensity interval training Upper body exercise peak power output Oxygen uptake Blood lactate concentration