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Wyszukujesz frazę "Balaji, S." wg kryterium: Autor

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    Wyświetlanie 1-11 z 11
    Tytuł:
    Ballistic studies of lightweight materials - a review
    Autorzy:
    Balaji, S.
    Kumar, S. Dharani
    Moorthy, K. Chandra
    Javeed, M. Mohamed
    Dharanidharan, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/95205.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    lightweight materials
    ballistics
    heat treatment
    numerical studies
    materiały lekkie
    balistyka
    obróbka cieplna
    badania modelowe
    Opis:
    A recent development in the material studies provides beneficial application of lightweight alloys such as aluminium, magnesium as well as composites and metal matrices. The alloys are experimentally improved by increasing hardness in the ballistics testing using projectiles,makes them viable for the areas such as aerospace, military, defence, automobiles and so on. So the study is made on different approaches. First, by comparing different types of non-ferrous alloys and projectiles regarding sizes, structures. Second, the materials with heat treatment are also studied for investigating the hardness property by overcoming successful penetration on non-ferrous alloys. Third, material to be improvised by use of numerical studies such as 3D models, empirical models and software such as ANSYS, ABAQUS and AUTODYN, etc. Finally, the aim of this paper is to review the recent progress ballistic studies of lightweight materials and to provide a best choice of material for further on-going research.
    Źródło:
    Journal of Mechanical and Energy Engineering; 2020, 4, 1; 7-14
    2544-0780
    2544-1671
    Pojawia się w:
    Journal of Mechanical and Energy Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and LFER study of some substituted hydrazones
    Autorzy:
    Vijayakumar, R.
    Rajarajan, M.
    Senbagam, R.
    Balaji, S.
    Manikandan, V.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182767.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Hydrazones and substituent effect
    LFER study
    Synthesis
    Opis:
    A series containing ten substituted hydrazones have been synthesized by condensation between semicarbazide and various substituted benzaldehydes. The hydrazones were confirmed by their physical constants and UV, IR, 1H NMR and 13C NMR spectral data. This UV, IR, 1H NMR and 13C NMR spectral data have been used for LFER studied with Hammett constants and Swain-Lupton’s parameters.
    Źródło:
    World Scientific News; 2017, 66; 263-280
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, and spectral Hammett correlation analysis of some (E)-1-(5-chloro-2-hydroxyphenyl)-3-phenylprop-2-en-1-one compounds
    Autorzy:
    Balaji, S.
    Vijayakumar, R.
    Manikandan, V.
    Senbagam, R.
    Rajarajan, M.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182925.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    (e)-5-chloro-2-hydroxyphenyl chalcones
    synthesis
    uv
    ir and nmr spectra
    hammett correlation analysis
    substituent effect
    Opis:
    A series of substituted of (E)-1-(5-chloro-2-hydroxyphenyl)-3-phenylprop-2-en-1-one compounds by cross-aldol condensation reaction of 5-chloro-2-hydroxy acetophenone with various substituted benzaldehyde in the presence sodium hydroxide (base). The synthesized substituted (E)-1-(5-chloro-2-hydroxyphenyl)-3-phenylprop-2-en-1-one compounds was characterized by physical constants, UV, FT-IR, 1H & 13C-NMR spectral data. All the spectral data of substituted (E)-1-(5-chloro-2-hydroxyphenyl)-3-phenylprop-2-en-1-one compounds has been Hammett correlation with linear regression analyses.
    Źródło:
    World Scientific News; 2016, 49, 2; 144-161
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and antimicrobial activity of substituted (E)-1-(4-fluoro-3-methylphenyl)-3-phenylprop-2-en-1-one compounds
    Autorzy:
    Balaji, S.
    Senbagam, R.
    Rajarajan, M.
    Vijayakumar, R.
    Manikandan, V.
    Vanangamud, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1189942.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Antibacterial activity
    Antifungal activity
    Bacillus subtilis
    vibrio cholera
    Opis:
    In an effort to develop antimicrobial agents, a series of substituted (E)-1-(4-fluoro-3-methylphenyl)-3-phenylprop-2-en-1-one compounds were synthesized by crossed-aldol condensation reaction of 4-fluoro-3-methyl acetophenone with various substituted benzaldehydes in the presence of sodium hydroxide. The synthesized compounds were characterized by means of their UV, IR and NMR spectral data. The synthesized substituted (E)-1-(4-fluoro-3-methylphenyl)-3-phenylprop-2-en-1-one compounds were tested for their antibacterial and antifungal activities by the Bauer-Kirby disc diffusion method.
    Źródło:
    World Scientific News; 2016, 52; 14-30
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, Assessment of substituent effect and Antimicrobial activities of some substituted (E)-N-benzylidene-4H-1,2,4-triazol-4-amines
    Autorzy:
    Senbagam, R.
    Rajarajan, M.
    Vijayakumar, R.
    Manikandan, V.
    Balaji, S.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194005.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    IR and NMR spectra
    QSAR study
    UV
    antimicrobial study
    heterocyclic Schiff bases
    synthesis
    Opis:
    Schiff H., Justus Liebigs Annalen der Chemie. 131(1) (1864) 118-9. [2] Lau K. Y., Mayr A., Cheung K. K., Inorgnic Chimica Acta. 285 (1999) 223-232. [3] Shawali A. S., Harb N. M. S., Badahdah K. O., Journal of Heterocyclic Chemistry. 22 (1985) 1397-1403. [4] Gupta K. C., Sutar A. K., Coordination Chemistry Review. 252 (2008) 1420-1450. [5] Yuan M., Zhao F., Zhang W., Wang Z. M., Gao S., Inorgnic Chemistry. 46 (2007) 11235-42. [6] Nakaic T., Meddu S., Kurahashi T., Japan Patent. 7389932 (1973); Chemical Abstracts. 81(1974) 65182. [7] Quraishi Harion M. A., Sharma K., Journal of Materials Chemistry and Physics. 78 (2002) 18-21. [8] Ramesh S., Rajeshwari S., Elctrochimica Acta. 49 (2004) 811-820. [9] Colter R. J., Matzner M., Ring terming poly, Part B-1, ‘Heterocyclic Ring’ Academic, New Youk, (1972). [10] Popp. F. D., Journal of Organic Chemistry. 26 (1961) 1566-1568. [11] Rao X., Huang X., He L., Song J., Song Z., Shang S., Combinatorial Chemistry & High Throughput Screening. 15 (2012) 840-844. [12] Hadjipavlou-litina D. J., Geronikaki A. A., Letters in Drug Design & Discovery. 15 (1996) 199-206. [13] Tiwary M., Naik S. N., Tiwari D. K., Mittal P. K., Yadav S., Journal of vector Brone Diseases. 44 (2007) 198-204. [14] Solak N., Rollas S., Arkivoc. (2006) 173-181. [15] Wadher S. J., Puranik M. P., Karande N. A., Yeole P. G., International Journal of Pharm Tech Research 1 (2009) 22-33. [16] Cates A. L., Rasheed S. M., Pharmaceutical Research 6 (1984) 271-273. [17] Sakthinathan S. P., Suresh R., Mala V., Sathiyamoorthi K., Kamalakkannan D., Ranganathan K., John Joseph S., Vanangamudi G., Thirunarayanan G., International Journal of Scientific Research and Knowledge, 1(11) (2013) 472. [18] Sakthinathan S. P., Suresh R., Mala V., Sathiyamoorthi K., Kamalakkannan D., Ranganathan K., Arulkumaran R., Vijayakumar S., Sundararajan R., Vanangamudi G., Thirunarayanan G., International Letters of Chemistry, Physics and Astronomy. 6 (2013) 77. [19] Suresh R., Kamalakkannan D., Ranganathan K., Arulkumaran R., Sundararajan R., Sakthinathan S. P., Vijayakumar S., Sathiyamoorthi K., Mala V., Vanangamudi G., Thirumurthy K., Mayavel P., Thirunarayanan G., Spectrochim. Acta, 101A (2013) 239. [20] Arulkumaran R., Vijayakumar S., Sakthinathan S.P., Kamalakkannan D., Ranganathan K., Suresh R., Sundararajan R., Vanangamudi G., Thirunarayanan G., Journal of Chilean Chemical Society. 2 (2013) 58. [21] Thirunarayanan G., Gopalakrishnan M., Vanangamudi G., Spectrochemica Acta 67A (2007)1106-1112 [22] Swain C. G., Lupton E. C., Journal of American Chemical Society. 90 (1968) 4328-4337. [23] Bauer A. W., Kirby W. M. M., Sherris J. C., Truck M., American Journal of Clinical Pathology. 45 (1966) 493-498.
    Źródło:
    World Scientific News; 2015, 8; 176-191
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and correlation analysis of spectral data of some (E)-2-benzylidenehydrazine carbothioamides
    Autorzy:
    Vijayakumar, R.
    Rajarajan, M.
    Balaji, S.
    Manikandan, V.
    Senbagam, R.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194021.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Benzaldehyde
    Hydrazones
    IR & NMR spectral data and substituent effect
    Thiosemicarbazide
    UV-Vis
    Opis:
    A series containing ten substituted (E)-2-benzylidenehydrazinecarbothioamide were synthesized by condensation between thiosemicarbazide and various substituted benzaldehydes. The synthesized (E)-2-benzylidenehydrazinecarbothioamide were characterized by their physical constants and spectral data. The UV C=N λmax (nm), infrared ν C=N (cm-1), 1H NMR δ (CH= N) and 13C δ (C=N) spectral data have been correlated with Hammett substituent constants and F and R parameters using single and multi-linear regression analysis. From the results of statistical analysis, the effect of substituents on the above Spectral data has been studied.
    Źródło:
    World Scientific News; 2015, 9; 70-87
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, spectral studies and antimicrobial activities of some substituted (E)-1-benzylidene-2-(4-bromophenyl)hydrazines
    Autorzy:
    Rajarajan, M.
    Senbagam, R.
    Vijayakumar, R.
    Manikandan, V.
    Balaji, S.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194024.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Antimicrobial study
    Hammett equation
    Hydrazone
    IR spectra
    NMR spectra
    Synthesis
    UV
    Opis:
    A series of nine number of (E)-1-benzylidene-2-(4-bromophenyl)hydrazine compounds have been synthesized by the condensation reaction of 4-bromo phenylhydrazine with varies m- and p- substituted benzaldehydes using acetic acid catalyst were refluxed for 4h with 20 mL of absolute ethanol. The yield of synthesized (E)-1-benzylidene-2-(4-bromophenyl)hydrazine compounds are more than 80%. The synthesized (E)-1-benzylidene-2-(4-bromophenyl)hydrazines have been characterized by UV, IR, 1H and 13C spectral data. These UV, IR and NMR spectral data have been correlated with varies Hammett substituted constant and Swain-Lupton F and R parameters using single and multi- regression analysis. From the results of statistical analysis, the effects of substituent have been studied. The antimicrobial activity of all the synthesized substituted (E)-1-benzylidene-2-(4-bromophenyl)hydrazines have been evaluated using Bayer-Kirby method.
    Źródło:
    World Scientific News; 2015, 9; 144-160
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, spectral correlation analysis and evaluation of antimicrobial activities of some (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-ones
    Autorzy:
    Sathiyendiran, V.
    Balaji, S.
    Senbagam, R.
    Vijayakumar, R.
    Manikandan, V.
    Rajarajan, M.
    Muthuvel, I.
    Markandan, R.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031849.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    4-dimethylthiazol enones
    Antimicrobial activities
    Crossed-Aldol condensation
    E-2
    IR and NMR spectra
    Spectral correlation analysis
    Substituent effects
    UV
    Opis:
    In this work, an attempt was made to synthesized (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one by cross-aldol condensation reaction of 5′-acetyl-2,4-dimethylthiazole with various substituted Benz aldehyde in the presence base (sodium hydroxide). The synthesized (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one derivative was characterized by physical constants, UV, FT-IR, 1H-NMR & 13C-NMR spectral data. All the observed spectral data of substituted (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one compounds have been correlated with Hammett substituent constants(σ, σ+, σI & σR) and F and R parameters using single and multi-linear regression analyses and studied for their anti-microbial activities and compared with the standard drugs (Ciprofloxacin). Some compound of the series exhibited promising anti-microbial activity compared to standard drugs (Ciprofloxacin).
    Źródło:
    World Scientific News; 2020, 141; 66-90
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and spectral correlation studies of some (E)-N′-1-(substituted benzylidene) benzohydrazides
    Autorzy:
    Manikandan, V.
    Balaji, S.
    Senbagam, R.
    Vijayakumar, R.
    Rajarajan, M.
    Vanangamudi, G.
    Arulkumaran, R.
    Sundararajan, R.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1162032.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    (E)-N’-1-(substituted benzylidene) benzohydrazides
    IR and NMR spectra and Correlations
    UV
    Opis:
    About ten substituted (E)-N’-1-(substituted benzylidene) benzohydrazides have been synthesized. They are characterized by their analytical, ultraviolet, infrared and NMR spectral data. The effects of substituent on these data have been studied using Hammett equation.
    Źródło:
    World Scientific News; 2018, 111; 26-39
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructural, electrical, thermal and tribological studies of copper-fly ash composites through powder metallurgy
    Autorzy:
    Thanga_Kasi_Rajan, S.
    Balaji, A. N.
    Narayanasamy, P.
    Vettivel, S. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/200650.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    copper composites
    fly ash
    electrical conductivity
    thermal conductivity
    wear test
    popiół lotny
    przewodnictwo elektryczne
    przewodnictwo cieplne
    testy zużycia
    kompozyty miedzi
    Opis:
    This research work address the fabrication of copper (Cu) matrix composites, reinforced with fly ash (FA) particulates with 3, 6, 9 and 12 wt.% using the powder metallurgy route. The microstructural, physical, electrical, thermal, mechanical and tribological properties of thus fabricated Cu-FA composites have been studied. Optical microstructural characterization of the composites exposed persuasively uniform distribution of FA reinforcement with minimum porosity. The mixed powder SEM images revealed the homogeneous dispersion of fly ash particulates in the copper matrix. The hardness values showed improvement with increase in the weight percentage of FA in the Cu matrix. Electrical conductivity was measured using the four-point probe method at room temperature. Thermal conductivity was measured with a thermal diffusivity analyzer at room temperature. The fly ash addition leads to weakening the conductivity of Cu-FA composites. The tribological properties of Cu-FA composite specimens were investigated using a Pin-on-disc tribo testing machine against an EN81 steel contour disc. The specific wear rate of the composites tended first to decrease, which was attributed mainly to the formation of a mechanically mixed layer on the worn surface. Then it would increase as the FA content increased because of reduction in ductility and brittle oxide cracks associated with adding more FA particulates. It seems that composites with FA percentages below 9wt.% have optimum properties of microstructure, hardness and wear resistance, which is suitable for applications such as electrical sliding contacts, electrical discharge machining and spot welding electrodes.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 935-940
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of fiber reinforcement towards the physical characteristics of low density polyethylene laminated composites
    Wpływ rodzaju włókien na właściwości fizyczne laminatowych kompozytów polietylenu małej gęstości
    Autorzy:
    Ravichandran, S.
    Raj, A. Daniel
    Visvanath, P. Balaji
    Mohammad, Faruq
    Al-Lohedan, Hamad A.
    Sagadevan, Suresh
    Powiązania:
    https://bibliotekanauki.pl/articles/947156.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    low density polyethylene composites
    mechanical properties
    thermal studies
    water absorption study
    epoxy resin
    Kevlar fiber
    glass fiber
    carbon fiber
    kompozyty polietylenu małej gęstości
    właściwości mechaniczne
    badania termiczne
    badania absorpcji wody
    żywica epoksydowa
    włókno Kevlar
    włókno szklane
    włókno węglowe
    Opis:
    In recent years, the increased interest in the design and fabrication of lightweight polymer composites with various combinations and stoichiometry is due to their enhancement of electrical, mechanical, thermal, and biological properties compared to the properties of conventional materials. With that view, the present study deals with the effects of low density polyethylene composites (LDPE) reinforced with epoxy resin, glass fiber, carbon fiber, and Kevlar towards the mechanical, thermal, and water absorption properties. The mechanical studies showed that the LDPE composite reinforced carbon fiber has the best tensile properties compared to other composites and this can be mostly due to the proper bonding and associated interaction between the polymeric matrix and the bidirectional layer of the fibers. Also, the carbon fiber reinforced composite has superior properties of impart energy compared to the other composites and the non-reinforced ones and this is attributed to the crystalline nature of carbon fiber. Further studies of the thermal properties indicated that the retention of thermal stability for all the fiber-reinforced polymer composites, while the water absorption revealed a considerable increase in the weight of Kevlar fiber-reinforced composite. From the overall analysis, the enhanced properties of LDPE matrix reinforced fibers are linked to the morphological changes that occurred and are directly affected by the nature of the fiber.
    Zwiększone w ostatnich latach zainteresowanie projektowaniem i wytwarzaniem lekkich kompozytów polimerowych wynika z ich lepszych właściwości elektrycznych, mechanicznych, termicznych i biologicznych w porównaniu z cechami materiałów konwencjonalnych. Zbadano wpływ rodzaju wzmocnienia (włókno szklane, włókno węglowe i włókno Kevlar) na właściwości mechaniczne, termiczne i absorpcję wody laminatowych kompozytów polietylenu małej gęstości (LDPE) z żywicą epoksydową. Stwierdzono, że kompozyt LDPE z włóknem węglowym, w porównaniu z innymi kompozytami, wykazuje najlepszą wytrzymałość na rozciąganie, co może wynikać głównie z interakcji polimerowej osnowy z dwukierunkową warstwą włókien. Ponadto kompozyt ten ma większą zdolność przenoszenia energii niż pozostałe badane kompozyty, co można przypisać krystalicznej budowie włókna węglowego. Badania właściwości termicznych wykazały stabilność termiczną wszystkich kompozytów polimerowych wzmocnionych włóknami oraz znaczną absorpcję wody kompozytu wzmocnionego włóknem Kevlar.
    Źródło:
    Polimery; 2020, 65, 6; 449-457
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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