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Wyszukujesz frazę "Kumar, K. G." wg kryterium: Autor

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    Wyświetlanie 1-17 z 17
    Tytuł:
    Scrutinization of Joule heating and viscous dissipation on MHD flow and melting heat transfer over a stretching sheet
    Autorzy:
    Kumar, K. G.
    Gireesha, B. J.
    Manjunatha, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/264626.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    metoda numeryczna
    dyssypacja lepkości
    płyn mikropolarny
    Joule heating
    viscous dissipation
    stretching sheet
    micro polar dusty fluid
    numerical method
    Opis:
    The present paper deals with an analysis of the combined effect of Joule heating and viscous dissipation on an MHD boundary layer flow and melting heat transfer of a micro polar fluid over a stretching surface. Governing equations of the problem are transformed into a set of coupled nonlinear ordinary differential equations by applying proper transformations and then they are solved numerically using the RKF-45 method. The method is verified by a comparison with the established results with limiting solution. The influence of the various interesting parameters on the flow and heat transfer is analyzed in detail through plotted graphs.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2018, 23, 2; 429-443
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal analysis of generalized Burgers nanofluid over a stretching sheet with nonlinear radiation and non uniform heat source/sink
    Autorzy:
    Kumar, K. G.
    Ramesh, G. K.
    Gireesha, B. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/240767.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    burgers nanofluid
    non-uniform heat source/sink
    non-linear radiation
    magnetic field
    stretching surface
    pole magnetyczne
    powierzchnia
    rozciąganie
    promieniowanie
    nanofluid
    Opis:
    The work deals with the heat analysis of generalized Burgers nanofluid over a stretching sheet. The Rosseland approximation is used to model the non-linear thermal radiation and incorporated non-uniform heat source/sink effect. The governing equations reduced to a set of nonlinear ordinary differential equations under considering the suitable similarity transformations. The obtained ordinary differential equations equations are solved numerically by Runge-Kutta-Fehlberg order method. The effect of important parameters on velocity, temperature and concentration distributions are analyzed and discussed through the graphs. It reveals that temperature increases with the increase of radiation and heat source/sink parameter.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 2; 97-122
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An unsteady flow and melting heat transfer of a nanofluid over a stretching sheet embedded in a porous medium
    Autorzy:
    Kumar, K. G.
    Gireesha, B. J.
    Rudraswamy, N. G.
    Krishnamurthy, M. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/947337.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    efekt topnienia
    reakcja chemiczna
    podłoże porowate
    przepływ niestabilny
    melting effect
    chemical reaction
    nanofluid
    porous medium
    stretching sheet
    unsteady flow
    Opis:
    An unsteady flow and melting heat transfer of a nanofluid over a stretching sheet was numerically studied by considering the effect of chemical reaction and thermal radiation. The governing non-linear partial differential equations describing the flow problem are reduced to a system of non-linear ordinary differential equations using the similarity transformations and solved numerically using the Runge–Kutta–Fehlberg fourth–fifth order method. Numerical results for concentration, temperature and velocity profiles are shown graphically and discussed for different physical parameters. Effect of pertinent parameters on momentum, temperature and concentration profiles along with local Sherwood number, local skin-friction coefficient and local Nusselt number are well tabulated and discussed.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 245-258
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Economic based evaluation of DGs in capacitor allocated optimal distribution network
    Autorzy:
    Srinivasan, G.
    Amaresh, K.
    Cheepati, Kumar Reddy
    Powiązania:
    https://bibliotekanauki.pl/articles/2173535.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ISSOT-WF
    capacitor placement
    capacitor sizing
    feeder reconfiguration
    dispersed generation
    electrical distribution network
    additional power loss reduction
    rozmieszczenie kondensatorów
    wymiarowanie kondensatorów
    rekonfiguracja podajnika
    generacja rozproszona
    sieć dystrybucji energii
    redukcja strat mocy
    Opis:
    Feeder reconfiguration (FR), capacitor placement and sizing (CPS) are the two renowned methods widely applied by the researchers for loss minimization with node voltage enrichment in the electrical distribution network (EDN), which has an immense impact on economic savings. In recent years, optimization of FR and CPS together can proficiently yield better power loss minimization and save costs compared to the individual optimization of FR and CPS. This work proposes an application of an improved salp swarm optimization technique based on weight factor (ISSOT-WF) to solve the cost-based objective function using CPS with and without FR for five different cases and three load levels, subject to satisfying operating constraints. In addition, to ascertain the impact of real power injection on additional power loss reduction, this work considers the integration of dispersed generation units at three optimal locations in capacitive compensated optimal EDN. The effectiveness of ISSOT-WF has been demonstrated on the standard PG&E-69 bus system and the outcomes of the 69-bus test case have been validated by comparing with other competing algorithms. Using FR and CPS at three optimal nodes and due to power loss reduction, cost-saving reached up to a maximum of 71%, and a maximum APLR of 26% was achieved after the installation of DGs at three optimal locations with the significant improvement in the bus voltage profile.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 1; e139053, 1--10
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unsteady three-dimensional MHD nanofluid flow over a stretching sheet with variable wall thickness and slip effects
    Autorzy:
    Kumar, G. Vinod
    Varma, S. V. K.
    Kumar, R. V. M. S. S. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/265665.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    pole magnetyczne
    magnetohydrodynamika
    poślizg
    unsteady flow
    magnetic field
    Buongiorno’s model
    variable wall thickness sheet
    velocity
    thermal and solutal slip
    Opis:
    The stretching sheets with variable thickness may occur in engineering applications more frequently than a flat sheet. Due to its various applications, in the present analysis we considered a three dimensional unsteady MHD nanofluid flow over a stretching sheet with a variable wall thickness in a porous medium. The effects of radiation, viscous dissipation and slip boundary conditions are considered. Buongiorno’s model is incorporated to study the combined effects of thermophoresis and Brownian motion. The dimensionless governing equations are solved by using MATLAB bvp4c package. The impact of various important flow parameters is presented and analysed through graphs and tables. It is interesting to note that all the three boundary layer thicknesses are diminished by slip parameters. Further, the unsteady parameter decreases the hydromagnetic boundary layer thickness.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 3; 709-724
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lean Tool Implementation in the Garment Industry
    Wdrożenie narzędzi „Lean Management” w przemyśle odzieżowym
    Autorzy:
    Kumar, D. Vasanth
    Mohan, G. Madhan
    Mohanasundaram, K. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/233304.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    lean tools
    value stream mapping
    5S
    line balancing
    narzędzia
    mapowanie strumienia wartości
    równoważenie linii
    Opis:
    Garment Manufacturing is one of the oldest in the world, compromising a high number of critical operations. The main issues in the garment industry are the lead time, production rate, very poor line balancing and fabric wastes. Productivity improvement is carried out by implementing the various lean tools in the industry, such as 5S, Value Stream Mapping (VSM) and line balancing in the sewing section. After the implementation of lean tools in the garment industry, the outcomes observed are a reduction in work-in-progress inventory, increases in the production process and increased line efficiency. Similarly the before and after implementation of 5S, which shows space utilisation in the sewing section, is increased. In this research, an implementation study was conducted in only one organisation. Hence the results extracted by the conduct of this implementation study are achievable and adaptable in similar organisations.
    Główne problemy w przemyśle odzieżowym to czas realizacji, tempo produkcji, bardzo niska równowaga linii i marnotrawstwo tkanin. Celem pracy było uzyskanie poprawy produktywności poprzez wdrożenie różnych narzędzi „Lean Management” w branży, takich jak 5S, Mapowanie Strumienia Wartości (VSM) i równoważenie linii w dziale szycia. Po wdrożeniu narzędzi „Lean Management” w przemyśle odzieżowym na podstawie uzyskanych rezultatów zaobserwowano zmniejszenie zapasów w toku prac, zwiększenie procesu produkcji i zwiększenie wydajności linii. Przedstawione w pracy wyniki dotyczą badania wdrożeniowego przeprowadzonego w jednej organizacji. W związku z tym wyniki uzyskane w ramach tego badania są możliwe do osiągnięcia i dostosowania w podobnych organizacjach.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2019, 2 (134); 19-23
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical evaluation of ultrasonic velocities of binary liquid mixtures of 1-bromopropane in chlorobenzene at 303.15, 308.15, 313.15 and 318.15 K
    Autorzy:
    Babu, Ch. P.
    Kumar, G. P.
    Nagarjun, B.
    Samatha, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/412079.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    ultrasonic velocities
    molecular interactions
    1-bromopropane and chlorobenzene
    Opis:
    Theoretical velocities of binary liquid mixtures of 1-bromopropane with chlorobenzene at 2 MHz and four different temperatures 303.15, 308.15, 313.15 and 318.15 K, have been evaluated as a function of concentration and temperature. The experimental values are compared with theoretical models of liquid mixtures such as Nomoto, Van Dael-Vangeel, Impedance Relation, Rao’s Specific Velocity Method, Junjie’s relations and Free Length Theory. In the chosen system there is a good agreement between experimental and theoretical values calculated by Nomoto’s theory. The deviation in the variation of U2exp/ U2imx from unity has also been evaluated for explaining the non ideality in the mixtures. The results are explained in terms of intermolecular interactions occurring in these binary liquid mixtures.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 9-17
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acoustical studies of binary liquid mixtures of p-chlorotoluene in benzene at different temperatures
    Autorzy:
    Kumar, G. P.
    Babu, Ch. P.
    Samatha, K
    Jyosthna, A. N.
    Showrilu, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/412275.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    ultrasonic velocity
    thermodynamic parameters
    p-chlorotoluene
    molecular interactions
    Opis:
    Ultrasonic velocities (U), densities (ρ), and coefficient of viscosities (η) are measured for binary mixtures containing (i) p-chlorotoluene and (ii) benzene at 303.15 K, 308.15 K, 313.15 K and 318.15 K to understand the molecular interaction. Various acoustical parameters such as adiabatic compressibility (βad), free length (Lf), acoustic impedance (Z), free volume (Vf), molar volume (Vm), Rao’s constant (R), Wada’s constant (W) and internal pressure (πi), are calculated from the measured values of U, ρ, and η. The trend in acoustical parameters also substantiates to asses strong molecular interactions.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 10; 25-37
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A report on occurrence of Neofusicoccum sp. in Carallia brachiata (Lour.) Merr. trees from Karnataka, India
    Autorzy:
    Muthu Kumar, A.
    Pandey, A.K.
    Mishra, G.
    Rao, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11572.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Carallia brachiata (Lour.) Merr. is one of the soft woody species occurring all along the Western Ghats region of Kundapura, Karnataka, India. The species is considered to be a potent medicinal plant exclusively used against itch and septic poisoning. A study was under gone based on the report of forest department (Karnataka) on mortality of Carallia brachiata. Observation of symptoms on the infected trees and experimental analysis of the samples under laboratory conditions revealed the incidence of Neofusicoccum sp., a first report on Carallia brachiata. This particular Neofusicoccum sp. belongs to Botryospaeriaceae family, and is considered to be an important fungal pathogen associated with tree decline in forest and plantation worldwide.
    Źródło:
    International Letters of Natural Sciences; 2015, 04
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on Aluminized, High Burning Rate, Butacene® Based, Composite Propellants
    Autorzy:
    Ghosh, K.
    Behera, S.
    Kumar, A.
    Padale, B. G.
    Deshpande, D. G.
    Gupta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/358702.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    Butacene®
    ferrocene
    pressure exponent
    Opis:
    This paper reports on a Butacene® based composite propellant with high burning rate. The effect of replacing HTPB with Butacene® on the physical, mechanical and ballistic properties, and sensitivity towards impact and friction, has been studied. The ballistic properties were evaluated as burning rates at various pressures (7-11 MPa), pressure exponents, ignition temperatures etc. As expected, a remarkable enhancement in burning rate at low pressures was observed with increasing percentage of Butacene®. Comparatively lower n-values were observed for compositions containing Butacene® than for HTPB based propellants. The sensitivity of Butacene® based compositions, in terms of impact and friction, was found to be increased with an increasing percentage of Butacene®.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 3; 323-333
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetic, Equilibrium and Thermodynamic studies on the removal of Cr(VI) by activated carbon prepared from Cajanus Cajan(L) Milsp seed shell
    Autorzy:
    Thamilarasu, P.
    Kumar Vijaya, G.
    Tamilarasan, R.
    Sivakumar, V.
    Karunakaran, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/779758.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    adsorpcja
    izoterma
    węgiel
    chrom i nasiona powłoki
    adsorption
    isotherm
    activated carbon
    chromium and seed shell
    Opis:
    This paper presents the feasibility of the removal of hexavalent chromium ions from aqueous solutions by using activated carbon prepared from Cajanus Cajan(L) Milsp. It was carbonized and activated by treating it with concentrated sulfuric acid followed by heating for 5 h at 500oC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature. The experimental data fi tted well to the Freundlich isotherm. The thermodynamic parameters such as ΔHo, ΔSo, and ΔGo were calculated, which indicated that the adsorption was spontaneous and endothermic in nature. The adsorbent used in this study was characterized by FT-IR and SEM before and after the adsorption of metal ions. The results indicate that Cajanus Cajan(L) Milsp can be employed as a low cost alternative and commercial adsorbents in the removal of chromium (VI) from water and waste water.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 4; 1-7
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibrational Spectroscopy of H_2O by Lie Algebraic Methods
    Autorzy:
    Karumuri, S.
    Srinivas, G.
    Sunil Babu, K.
    Sundara Siva Kumar, V.
    Hanumaiah, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399490.pdf
    Data publikacji:
    2013-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    03.65.Fd
    02.20.Sv
    33.20.Ea
    Opis:
    An algebraic model of coupled anharmonic oscillators is introduced, capable of describing the stretching vibrations of medium-size molecules. This model is applied to the calculation of O-H vibrational modes of water molecules. In this paper, we have reported the stretching and bending vibrational energy levels of water molecule using the algebraic and density functional theory method. The results obtained by theoretical models show good agreement with the experimental values.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 1; 3-5
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrothermal fabrication of CeVO4 nanoflowers assisted effective photocatalytic mineralization of aqueous methylene blue solution
    Autorzy:
    Muthuvel, I.
    Jayasri, U.
    Gowthami, K.
    Kumar, N. Dinesh
    Thirunarayanan, G.
    Balakrishnan, K.
    Rajachandrasekar, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031461.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CeVO4
    Cerium vanadate
    Methylene Blue
    Photocatalyst
    Wastewater treatment
    Opis:
    A tetragonal zircon type cerium vanadate (CeVO4) photocatalyst was successfully synthesized hydrothermal method using Ce(NH4)2(NO3)6 and NH4VO3. The products were characterized using the FT-IR, XRD, FE-SEM and UV-DRS. The XRD results show that crystallite size of cerium vanadate is 27.2 nm. The effect of operational parameters such as effect of pH, catalyst suspension, initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of wastewater.
    Źródło:
    World Scientific News; 2020, 142; 103-119
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Protuberance-mediated high frequency of adventitious shoot regeneration from sweetpotato leaf explants [Ipomoea batatas (L.) Lam.]
    Autorzy:
    Ashok Kumar, H.G.
    Ku, A.T.
    Agrawal, P.
    Mahesh, S.
    Yeh, K.-W.
    Powiązania:
    https://bibliotekanauki.pl/articles/80764.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adventitious shoot
    organogenesis
    sweet potato
    Ipomoea batatas
    plant regeneration
    leaf explant
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 4
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An ailuravine rodent from the lower Eocene Cambay Formation at Vastan, western India, and its palaeobiogeographic implications
    Autorzy:
    Rana, R S
    Kumar, K.
    Escarguel, G.
    Sahni, A.
    Rose, K.D.
    Smith, T.
    Singh, H.
    Singh, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/23190.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Ischyromyidae
    Cambay Formation
    paleontology
    Euromys inexpectatus
    Euromys cardosoi
    Rodentia
    Eocene
    India
    Ailuravinae
    Meldimys musak
    Mammalia
    ailuravine rodent
    new species
    Ailuravus michauxi
    rodent
    paleobiogeography
    Western India
    Opis:
    A new ailuravine rodent, Meldimys musak sp. nov. (Mammalia: Rodentia, Ischyromyidae), is recorded from the lower Eocene lignites of western India. It is the oldest record of Rodentia from India. M. musak is more derived than the earliest Eocene ailuravine Euromys cardosoi from Portugal and more generalized than late early Eocene E. inexpectatus and Ailuravus michauxi from France. Its dental morphology closely corresponds to the middle early Eocene species M. louisi, which lived about 52 Ma in Western Europe. Meldimys was previously known only from Europe, and ailuravines were previously reported only from Europe and North America. Its occurrence in India allows the first direct correlation between the early Eocene land mammal horizons of Europe and India, and raises the possibility of a terrestrial faunal exchange between India and Eurasia close to the Palaeocene–Eocene transition.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative evaluation of inversion approaches of the radiative transfer model for estimation of crop biophysical parameters
    Autorzy:
    Mridha, N.
    Sahoo, R.N.
    Sehgal, V.K.
    Krishna, G.
    Pargal, S.
    Pradhan, S.
    Gupta, V.K.
    Nagesh Kumar, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/25984.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    The inversion of canopy reflectance models is widely used for the retrieval of vegetation properties from remote sensing. This study evaluates the retrieval of soybean biophysical variables of leaf area index, leaf chlorophyll content, canopy chlorophyll content, and equivalent leaf water thickness from proximal reflectance data integrated broad bands corresponding to moderate resolution imaging spectroradiometer, thematic mapper, and linear imaging self scanning sensors through inversion of the canopy radiative transfer model, PROSAIL. Three different inversion approaches namely the look-up table, genetic algorithm, and artificial neural network were used and performances were evaluated. Application of the genetic algorithm for crop parameter retrieval is a new attempt among the variety of optimization problems in remote sensing which have been successfully demonstrated in the present study. Its performance was as good as that of the look-up table approach and the artificial neural network was a poor performer. The general order of estimation accuracy for para-meters irrespective of inversion approaches was leaf area index > canopy chlorophyll content > leaf chlorophyll content > equivalentleaf water thickness. Performance of inversion was comparable for broadband reflectances of all three sensors in the optical region with insignificant differences in estimation accuracy among them.
    Źródło:
    International Agrophysics; 2015, 29, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and evaluation of novel mri contrast agents of chemically modified GD-DTPA complexes with sugars
    Autorzy:
    Sugiyama, M.
    Yamashita, M.
    Yu, G.
    Fujie, M.
    Ogawa, K.
    Ozaki, N.
    Aoki, T.
    Mizuno, S.
    Okada, S.
    Tachi, K.
    Aoshima, K.
    Sankar, U. R.
    Kumar, B. S.
    Takehara, Y.
    Sakahara, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/385252.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    MRI contrast agent
    Gd(III)-DTPA
    tumor imaging
    Opis:
    MRI is one of medical diagnostic imaging technologies that can draw the cross section in the body. To obtain a clearer image, Gd complexes are often used as MRI contrast agents. Gd-DTPA (Gd-Diethylenetriaminepentaacetate, Magnevist registered trademark ) is used in particular as the MRI contrast agents. We prepared and evaluated novel MRI contrast agents that were chemically modified Gd-DTPA with sugars (represented as Gd-DTPA-Sugar) via hydrolysis route for providing specificity to target organs and tissues. Gd-DTPASugar complex showed an excellent potential for the MRI contrast agent (r1=31.2 s-1mM-1). Gd-DTPA-Sugar complexes alternatively prepared by shorter synthetic route without protection/ deprotection (hydrolysis) method showed inferior results (r1=6.3 and 8.1 s-1mM-1) to the hydlized product.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 191-194
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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