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Wyszukujesz frazę "Prakash, D." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Transient analysis of heat transfer across the residential building roof with PCM and wood wool - A case study by numerical simulation approach
    Autorzy:
    Prakash, D.
    Ravikumar, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/230999.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    przenikanie ciepła
    budynek mieszkalny
    dach
    materiał zmieniający fazę
    wełna drzewna
    symulacja numeryczna
    heat transfer
    residential building
    roof
    phase change material
    wood wool
    numerical simulation
    Opis:
    In this paper, transient analysis on heat transfer across the residential building roof having various materials like wood wool, phase change material and weathering tile is performed by numerical simulation technique. 2-dimensional roof model is created, checked for grid independency and validated with the experimental results. Three different roof structures are included in this study namely roof with (i). Concrete and weathering tile, (ii). Concrete, phase change material and weathering tile and (iii). Concrete, phase change material, wood wool and weathering tile. Roof type 3 restricts 13% of heat entering the room in comparison with roof having only concrete and weathering tile. Also the effect of various roof layers’ thickness in the roof type 3 is investigated and identified that the wood wool plays the major role in arresting the entry of heat in to the room. The average reduction of heat is about 10 % for an increase of a unit thickness of wood wool layer.
    Źródło:
    Archives of Civil Engineering; 2013, 59, 4; 483-497
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of hydrotropes on the solubility and mass transfer coefficient of 2-nitrobenzoic acid
    Autorzy:
    Thenesh-Kumar, S.
    Gnana-Prakash, D.
    Nagendra-Gandhi, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/779314.pdf
    Data publikacji:
    2009
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    hydrotrop
    solubilizacja
    współczynnik wymiany masy
    separacja
    hydrotropy
    solubilization
    mass transfer coefficient
    separation
    Opis:
    A comprehensive investigation on the solubility and mass transfer coefficient enhancement of 2-nitrobenzoic acid through hydrotropy, has been undertaken. The solubility and mass transfer coefficient studies were carried out using hydrotropes such as sodium acetate, citric acid and nicotinamide under a wide range of hydrotrope concentrations (0 to 3.0 mol/L) and different system temperatures (303 to 333 K). It was found that the solubility and mass transfer coefficient of 2-nitrobenzoic acid increases with an increase in hydrotrope concentration and also with system temperature. All hydrotropes used in this work showed an enhancement in the solubility and mass transfer coefficient to different degrees. The maximum enhancement factor value has been determined for both the solubility and mass transfer coefficient. The effectiveness of hydrotropes was measured in terms of Setschnew constant Ks and reported for all the hydrotropes used in this study.
    Źródło:
    Polish Journal of Chemical Technology; 2009, 11, 2; 55-59
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancement of Solubility and Mass Transfer Coefficient of Benzoic Acid Through Hydrotropy
    Autorzy:
    Prakash, G.D.
    Kumar, S.T.
    Gandhi, N.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/779266.pdf
    Data publikacji:
    2013
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    hydrotropy
    solubilization
    mass-transfer coefficient
    benzoic acid
    Opis:
    The effect of hydrotropes such as sodium salicylate, sodium benzoate, and nicotinamide on the solubility and mass transfer coefficient of benzoic acid has been investigated. The solubility studies were carried out under a wide range of hydrotrope concentrations (0 to 3.0 mol/L) and different system temperatures (303K to 333K). It has been observed that the solubility and mass transfer coefficient of benzoic acid increases with an increase in hydrotrope concentration and also with system temperature. A Minimum Hydrotrope Concentration (MHC) was found essential to initiate a significant increase in the solubility and the mass transfer coefficient. The maximum enhancement factor (?s), which is the ratio of the solubility value in the presence and absence of a hydrotrope, has been determined for all sets of experimentations. The solubility of benzoic acid has been enhanced to 19.98 times in the presence of 2.5 mol/L concentration of sodium salicylate hydrotrope at 333K.The effectiveness of hydrotropes was measured in terms of Setschenow constant Ks and the highest value has been observed as 0.502 for sodium salicylate.
    Źródło:
    Polish Journal of Chemical Technology; 2013, 15, 1; 46-50
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Systematic analysis and review of video object retrieval techniques
    Autorzy:
    Ghuge, C. A.
    Prakash, V. Chandra
    Ruikar, Sachin D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2050246.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    video object retrieval
    computer vision
    deep learning
    fuzzy-based techniques
    machine learning
    query-based techniques
    graph-based techniques
    Opis:
    Video object retrieval is a promising research direction, developing in the recent years, and the current video object retrieval strategies are used for visualizing, digitizing, modeling, and retrieving the objects especially in graphics and in architectural design. The research performed led to the design of proficient video object retrieval techniques. Yet, although, a number of algorithms had been devised for tracking objects, the problems persist in enhancing the performance, for instance – with regard to non-rigid objects. In this review article we provide a detailed survey of 50 research papers presenting the suggested video object retrieval methodologies, based on approaches such as deep learning techniques, graph-based techniques, query-based techniques, feature-based techniques, fuzzybased techniques, machine learning-based techniques, distance metric learning-based technique, and also other ones. Moreover, analysis and discussion are presented concerning the year of publication, employed methodology, evaluation metrics, accuracy range, adopted framework, datasets utilized, and the implementation tool. Finally, the research gaps and issues related to various proposed video object retrieval schemes are presented for guiding the researchers towards improved contributions to the video object retrieval methods.
    Źródło:
    Control and Cybernetics; 2020, 49, 4; 471-498
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design, Synthesis, Characterization and Biological evaluation of (4-(7-chloroquinolin-4-yl)piperazin-1-yl)(substitutedphenyl)methanones as antimicrobial agents
    Autorzy:
    Parmar, Nilesh D.
    Hadiyal, Sanjay D.
    Kapupara, Vimal H.
    Kalavadiya, Prakash L.
    Gojiya, Dinesh G.
    Bhatt, Tejal
    Vekariya, Mitesh B.
    Chovatiya, Pankaj J.
    Joshi, Hitendra S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075589.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chloroquinoline
    antimicrobial agents
    multistep synthesis
    piperazine
    Opis:
    A series of (4-(7-chloroquinolin-4-yl)piperazin-1-yl)(substitutedphenyl)methanones were prepared via multistep synthesis which involved acrylation without base, cyclisation, hydrolysis, decarboxylation, electrophilic chlorination reactions and subsequent chloro-amine coupling with various substituted benzoyl chloride derivatives. The structure of the synthesized compounds was established by using elemental analysis, FT-IR, 1H NMR, 13C NMR and Mass spectroscopy. All the novel compounds have been tested on thin layer chromatographic plate for purity and evaluated for their antimicrobial activity against gram positive and gram negative bacteria which demonstrated moderate to good antimicrobial activity.
    Źródło:
    World Scientific News; 2019, 122; 193-205
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of natural Gongura roselle fiber on the mechanical properties of 3D printed ABS and PLA composites
    Wpływ naturalnego włókna Gongura roselle na właściwości mechaniczne kompozytów ABS i PLA otrzymanych metodą druku 3D
    Autorzy:
    Appusamy, Anandha Moorthy
    Nanjappan, Natarajan
    Eswaran, Prakash
    Subramanian, Madheswaran
    Powiązania:
    https://bibliotekanauki.pl/articles/2088277.pdf
    Data publikacji:
    2022
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    natural fiber
    Gongura roselle
    poly(lactic acid)
    acrylonitrile-butadiene-styrene
    3D printing
    włókno naturalne
    poli(kwas mlekowy)
    akrylonitryl-butadien-styren
    druk 3D
    Opis:
    The influence of the natural Gongura roselle fiber on the tensile and flexural properties as well as on Shore D hardness of acrylonitrile-butadiene-styrene (ABS) and poly (lactic acid) (PLA) was investigated. The composites were printed in fused deposition modeling (FDM) 3D technique. The addition of natural fiber improved the mechanical properties of the tested composites, while the flexural strength, modulus and hardness were better in the case of ABS-based composite. Whereas, PLA-based composites showed higher tensile strength. The influence of the nozzle angle on the mechanical properties of the composites was also investigated. The best results have been obtained when using an angle of 0°.
    Zbadano wpływ naturalnego włókna Gongura roselle na właściwości mechaniczne przy rozciąganiu i zginaniu oraz twardość Shore’a D akrylonitrylu-butadienu-styrenu (ABS) i poli(kwasu mlekowego) (PLA). Kompozyty otrzymano metodą osadzania topionego materiału (FDM) w technice 3D. Dodatek naturalnego włókna poprawił właściwości mechaniczne badanych kompozytów, przy czym wytrzymałość na zginanie, moduł sprężystości i twardość były lepsze w przypadku kompozytu na osnowie ABS. Natomiast kompozyty na osnowie PLA miały większą wytrzymałość na rozciąganie. Zbadano również wpływ kąta ustawienia dyszy na właściwości mechaniczne kompozytów. Najlepsze wyniki uzyskano stosując kąt 0°.
    Źródło:
    Polimery; 2022, 67, 3; 119--124
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Greener, facile and ultrasound assisted synthesis of 1,2,3-triazole via CuAAC of 2-(azidomethyl)-1H-benzo[d]imidazole and alkynes and their evaluation of antimicrobial activity
    Autorzy:
    Kapupara, Vimalkumar H.
    Kalavadiya, Prakash L.
    Gojiya, Dinesh G.
    Parmar, Nilesh D.
    Joshi, Hitendra S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075696.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    1
    1H-benzo[d]imidazole azide
    2
    3-triazol-1-yl)methyl)-1H-benzo[d]imidazole
    3-triazole via CuAAC
    4-disubstituted 1H-1
    alkynes
    antimicrobial
    copper(I) catalyst
    Opis:
    An expeditious room temperature protocol for the synthesis of 1,4-disubstituted 1H-1,2,3-triazol-1-yl)methyl)-1H-benzo[d]imidazole from [3+2] cyclization by using 1H-benzo[d]imidazole azide and various substituted terminal alkynes and copper(I) as a catalyst. This synthetic approach has been various prominent features such as fewer reaction steps, Good Yield, simple reaction condition and no any further purification required. Characterizations of all the synthesized compounds were done by various spectroscopic techniques like FT-IR, NMR and Mass spectrometry. All the synthesized targeted compounds were screened and evaluated for their antimicrobial activities.
    Źródło:
    World Scientific News; 2019, 119; 139-167
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Thermal Comfort Properties of Different Kinds of Polyester Knitted Fabrics
    Badanie właściwości komfortu termicznego różnych rodzajów dzianin poliestrowych
    Autorzy:
    Mohapatra, Shradhanjali
    Vidya, T.
    Kumar, D. Vasanth
    Rajwin, A. Jebastin
    Babu, V. Ramesh
    Prakash, C.
    Shah, B. Anas
    Roy, Reetuparna
    Powiązania:
    https://bibliotekanauki.pl/articles/2056314.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    comfort
    knitted fabric
    microdenier polyester
    polyester
    single jersey
    thermal comfort
    komfort
    dzianina
    poliester microdenier
    poliester
    komfort termiczny
    Opis:
    This research focused on the thermal comfort behaviour of polyester with respect to the type of yarn (spun, micro denier, continuous filament and hollow), linear density of the yarn (111 and 166 dtex), and the loop length of knitted fabric (0.25, 0.27 and 0.29 cm).The air permeability of continuous filament yarn fabric and micro denier yarn knitted fabrics was noted to be higher than that of spun yarn knitted fabrics. 111 dtex micro denier yarn fabric has the highest air permeability and 111 dtex spun yarn fabric the lowest air permeability value among all the other fabric samples. Comparatively, coarser spun yarn fabric has lower air permeability characteristics than finer microdenier fabric.The water permeability of the fabric shows a significant difference between the spun yarn, continuous filament yarn and Micro denier yarn knitted fabrics and between the linear density of the yarn. The water vapour permeability of spun yarn of 166 dtex single jersey fabric is higher, while the water vapour permeability of continuous filament yarn fabric of 166 dtex is lower. The thermal conductivity value is high for continuous filament polyester fabric of 100 D and low for microdenier polyester fabric of 166 dtex. Based on the statistical analysis, it is clearly shown that there are significant differences between the three different polyester yarn fabrics of two different denier of the same fabric. Furthermore, the count and different polyester yarn affect the comfort properties of single jersey fabrics.
    Badania koncentrowały się na zachowaniu komfortu cieplnego poliestru w odniesieniu do rodzaju przędzy, gęstości liniowej przędzy (111 dtex i 166 dtex) oraz długości pętelki dzianiny (0,25 cm, 0,27 cm oraz 0,29 cm). Zbadano właściwości wytworzonych dzianin takie jak: przepuszczalność powietrza, wody, pary wodnej oraz przewodność cieplną, a wyniki poddano analizie statystycznej.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2021, 5 (149); 50--55
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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