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Wyszukujesz frazę "Patel, S.R." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-14 z 14
    Tytuł:
    Anti-solvent sonocrystallisation of lactose
    Autorzy:
    Patel, S.R.
    Murthy, Z.V.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/185611.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    n-propanol
    odzyskiwanie laktozy
    antyrozpuszczalnik
    lactose recovery
    anti-solvent
    sonocrystallisation
    Opis:
    The present work deals with ultrasound assisted crystallisation of lactose from lactose solution. The crystallisation of lactose was completed rapidly by applying the ultrasound waves in the presence of an anti-solvent (n-propanol), at the room temperature (30š3°C). The yield of lactose was found to be more than 85% (w/w) in 4 minutes of sonication. The spread of the crystal size distribution was found to decrease with increase in sonication time.
    Źródło:
    Chemical and Process Engineering; 2011, 32, 4; 379-389
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and in vitro antibacterial and antifungal evaluation of quinoline analogue azetidin and thiazolidin derivatives
    Autorzy:
    Prajapati, S. M
    Vekariya, R. H.
    Patel, K. D.
    Panchal, S. N.
    Patel, H. D.
    Rajani, D. P.
    Rajani, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/412324.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    antibacterial
    antifungal
    quinoline
    azetidin derivatives
    thiazolidin derivatives
    Opis:
    A library of quinoline analog two novel series of azetidin (SH1-5) and thiazolidin (SHa-e) derivatives were designed and synthesized with simple and eco-friendly methodologies. The structures of the compounds were elucidated with the aid of elemental analysis, IR, 1H-NMR and mass spectral data. These novel synthesized compounds were evaluated for antibacterial activity against two gram-positive bacteria (Staphylococcus aureus, Staphylococcus pyogenus) and two gram-negative bacteria (Pseudomonas aeruginosa, Escherichia coli). The title compounds were also studied for their antifungal activity with Candida albicans, Aspergillus niger, Aspergillus clavatus using the broth dilution technique. Most of the compounds were the best bio-active desired antibacterial analog with less MIC value against different tested strains.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 20, 2; 195-210
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mesogenic Dependence of Chalconyl Schiff’s Bases on Molecular Rigidity and Flexibility
    Autorzy:
    Pandya, S. H.
    Patel, V. R.
    Doshi, A. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178290.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Enantiotropy
    Liquid Crystals
    Mesomorphism
    Nematic
    Smetic
    Opis:
    A novel homologous series R0-C6H4.CH:N-C6H4.CO.CH:CH-C6H4-OC6H13(n) of liquid crystal property is synthesized and studied with a view to understand and establish the effect of molecular structure on liquid crystal properties with respect to Schiff base and chalconyl central bridges as well as changing left n-alkoxy terminal and right n-hexyloxy fixed tail ended group. Homologous series consisted of eleven (C1 to C16) homologues in which the nematogenic mesomorphism commences from C3 homologue and continued to last C16 homologue without exhibition of smectogenic property. Rest of the C1 and C2 homologues are nonmesomorphic, whose Latent transition temperature (LTT) are predicted by extrapolation of N-I transition curves. Odd-even effect is observed for N-I transition curve. N-I transition curve and Cr-N/I transition curve behaved in normal manner. The Nematic thermal stability is 72.2 ° C. The minimum and maximum nematogenic mesophaselengths are ranging between 12.0 °C and 30.0 °C at C16 and C14 homologue respectively. Transition temperatures were determined by an optical polarizing microscopy (POM), equipped with a heating stage. Thermal analytical and spectral data confirms the molecular structures of homologues. The novel homologous series of chalconyl Schiff’s base is low melting series, whose mesogenic transition temperatures ranges between 43.0 °C and 79.0 °C.
    Źródło:
    World Scientific News; 2017, 86, 3; 242-252
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Functional appliances: The activator and the functional regulator- A review
    Autorzy:
    Kishnani, R.
    Uppal, S.
    Patel, G.
    Acharya, A.
    Metha, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1916521.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Activator
    functional regulator
    myofunctional appliances
    Opis:
    In this review of literature we are discussing the effects of functional appliances on the dentofacial structures in the treatment of Class II malocclusions. Despite recent questions on the effectiveness of early treatment, it is generally recognized that the use of growth modification still has a place in modern orthodontic practices. The aim of this review is to study growth modification of the mandible by two appliances: the activator and the functional regulator. Mechanism of action, design, effect on dentofacial structures, etc. of activator and the functional regulators are discussed here. Regardless of the appliance used, there are a large amount of variations in individual patient response to treatment. A second stage of treatment with a fixed appliance is necessary in most cases to ensure proper alignment and interdigitation of the dentition. Regardless of the appliance used, the success of treatment is dependent on patient cooperation.
    Źródło:
    Progress in Health Sciences; 2014, 4, 2; 150-156
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioremediation of melanoidin contamination in distillery effluent using Aspergillus brasiliensis
    Autorzy:
    Singh, T.A.
    Singh, T.
    Singh, R.
    Pandey, P.K.
    Gaur, R.
    Jamal, F.
    Patel, S.K.
    Bansal, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2097092.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spent wash
    effluent
    melanoidin
    bioremediation
    decolorization
    Opis:
    The current investigation is the first report of utilization of Aspergillus brasiliensis for the decolorization of melanoidin in distillery effluent. The effluent generated from alcohol distilleries is one of the most complex wastewater with a high biological oxygen demand (BOD) and other organic, inorganic, and toxic constituents. The effluent contains melanoidin, a dark brown compound, which is difficult to remediate by using conventional technologies. The disposal of spent wash in the natural environment is hazardous and can deteriorate land and water resources. The decolorization of spent wash through physical and chemical methods remains unsuitable, and the only alternative to decolorize spent wash is biological treatment. In the current study, three fungal strains were isolated from the distillery waste and screened for their ability to decolorize melanoidin.The isolate RS2 exhibited maximum decolorization of 83% and was identified as Aspergillus brasiliensis. Its optimum growth temperature was 37EC, and the maximum efficiency was recorded after 120 h of incubation. Nutritional sources were investigated for the fungi showing the maximum decolorization of melanoidin, and starch and peptone were found to be the best carbon and nitrogen sources, respectively. At 1.5% starch concentration and 1.5% peptone concentration, the decolorization level attained was 87.45% and 88.74%, respectively. A. brasiliensis exhibited a high potential to decolorize melanoidin. The decolorization percentage was high, which makes this fungus a potential candidate for use at the industrial scale for the bioremediation of spent wash.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 3; 205-213
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmentally and Economically Feasibility Manufacturing Process of Potassium Nitrate for Small Scale Industries: A Review
    Autorzy:
    Joshi, C. S.
    Shukla, M. R.
    Patel, K.
    Joshi, J. S.
    Sahu, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/411997.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chemical
    discharge
    ions
    Salts
    Waste
    Opis:
    Potassium Nitrate (PN) is of the basic need of chemical industry. With increase of demand in different production section of fertilizer, pharmaceutical, explosive, food industry etc, potassium nitrate the production becoming non economical to industry. The operating conditions and parameters are the main factors, which responsible for maximised the profits. The main aim of this study is to compared the production potassium nitrate in profitable as well as environmentally suitability way. From the literature different manufacturing process has been summarized for concluding this study.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 41; 88-99
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and in vitro antimicrobial evaluation of some new chalcones containing vinyl ester group and substituted alkyl chain
    Autorzy:
    Sharma, Vinay S.
    Patel, R. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191249.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Antibacterial
    Antifungal
    Chalcone
    Vinyl ester
    Opis:
    A novel series of chalconyl vinyl ester based derivatives were designed and synthesized. The newly synthesized compounds were studied for efficacy against several bacteria (E.Coli, P.Aeruginosa, S.Aureus, S.Pyogenus) and fungi (C.Albicans, A.Niger, Clavatus) using the broth dilution technique. Chalcones were prepared by treatment of 4-iodo acetophenone with 4-hydroxy benzaldehyde by Claisen-Schimidt condensation reaction. Various chalconyl vinyl ester derivatives (C1-C8) were prepared by reaction of chalcone with 4-n-alkoxy cinnamic acids derivatives. Compound C8 shows the best bioactive desired antibacterial analogue with less MIC value against different tested strains. All the final synthesized compounds were characterized by IR, 1H NMR, and elemental analysis.
    Źródło:
    World Scientific News; 2016, 54; 240-251
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A convergent approach for the synthesis of new pyrazolyl bipyridinyl substituted coumarin derivatives as antimicrobials
    Autorzy:
    Bhila, V. G.
    Chovatiya, Y. L.
    Patel, C. V.
    Giri, R. R.
    Brahmbhatt, D. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/411982.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Coumarin
    Bipyridine
    Pyrazole
    Kröhnke’s reaction
    antimicrobial activity
    Opis:
    Some new 3-[3-(1-phenyl-3-aryl-1H-pyrazol-4-yl)acryloyl]coumarins 3a-f were synthesized (coumarin chalcones) by the condensation of various 3-acetyl coumarins 1 and appropriate 1-phenyl-3-aryl-1H-pyrazole-4-carbaldehyde 2. These coumarin chalcones 3a-f were then employed for the synthesis of pyrazolyl bipyridinyl substituted coumarins 7a-f, 8a-f, and 9a-f under Krohnke’s reaction condition. The characterization of all the synthesized compounds was carried out by elemental analysis, IR, 1H-NMR, 13C-NMR, DEPT-135 and mass spectral analysis. In addition to that, in vitro antimicrobial competency of the title compounds was assessed against selected pathogens. Compounds 3b, 3e, 7b, 8b, 8c and 9b exhibited excellent antimicrobial activity and said to be the most proficient members of the series.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 40; 1-16
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical properties of fresh mahua
    Autorzy:
    Patel, M.
    Pradhan, R.
    Naik, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/24590.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    density
    flower
    fresh mahua
    Madhuca indica
    mahua
    mass
    moisture content
    physical property
    surface area
    Madhuca latifolia zob.Madhuca indica
    Sapotaceae
    tree
    fruit
    edible fruit
    edible flower
    Źródło:
    International Agrophysics; 2011, 25, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two Step One-Pot Synthesis of Novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-One and it’s Base Catalyzed Transformation to N-Alkyl and C-3 Arylidene Derivatives
    Autorzy:
    Patel, Anil S.
    Khunt, H. R.
    Ghelani, S. M.
    Babariya, J. S.
    Vilapara, K. V.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412124.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    benzodiazepines
    base catalyzed
    cross-aldol
    Opis:
    We have demonstrated two step one-pot synthesis of novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-one using 2-Amino-4’-fluorobenzophenone as initial stating material. The small library of N-alkylation and C-3 benzylidene derivatives have been synthesized by base catalyzedreaction of 5-(4-fluorophenyl)-1H-benzo[e][1,4]diazepin-2(3H)-one (3) nucleus with various alkyl halides and aromatic aldehydes respectively.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 106-115
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extraction protocol for isolation of CNSL by using protic and aprotic solvents from cashew nut and study of their physico-chemical parameter
    Autorzy:
    Gandhi, T. S.
    Dholakiya, B. Z.
    Patel, M. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/778109.pdf
    Data publikacji:
    2013
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Cashew nut shell
    Cashew nut shell liquid
    Cardanol
    Soxhlet apparatus
    Opis:
    Cashew nut shell liquid (CNSL) represents the largest readily available bioresource of alkenyl phenolic compounds. (CNSL) and its derivatives are widely used in polymer-based industries, synthesis of chemicals and intermediates, including bactericides, insecticides and surface active agents. In this work extraction of cashew nut shell liquid from cashew nut shell (CNS) was carried out by using the Soxhlet extraction method in the presence of polar & non-polar solvents. From the extracted CNSL, anacardic acid was selectively isolated and acid free CNSL was treated with liquor ammonia to separate the cardanol and cardol in the stepwise manner. Comparative study for the extracted CNSL and S-was performed. Higher amount of extracted CNSL was obtained from polar solvents. They were all characterized using quantitative analysis by HPLC.
    Źródło:
    Polish Journal of Chemical Technology; 2013, 15, 4; 24-27
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling and Optimization of Phenol Formaldehyde Resin Sand Mould System
    Autorzy:
    Chate, G. R.
    Patel, M. G. C.
    Parappagoudar, M. B.
    Deshpande, A. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/381857.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mould hardness
    phenol-formaldehyde resin
    permeability
    desirability function approach
    design of experiments
    masy formierskie
    żywica fenolowo-formaldehydowa
    przepuszczalność
    twardość
    optymalizacja
    Opis:
    Chemical bonded resin sand mould system has high dimensional accuracy, surface finish and sand mould properties compared to green sand mould system. The mould cavity prepared under chemical bonded sand mould system must produce sufficient permeability and hardness to withstand sand drop while pouring molten metal through ladle. The demand for improved values of permeability and mould hardness depends on systematic study and analysis of influencing variables namely grain fineness number, setting time, percent of resin and hardener. Try-error experiment methods and analysis were considered impractical in actual foundry practice due to the associated cost. Experimental matrices of central composite design allow conducting minimum experiments that provide complete insight of the process. Statistical significance of influencing variables and their interaction were determined to control the process. Analysis of variance (ANOVA) test was conducted to validate the model statistically. Mathematical equation was derived separately for mould hardness and permeability, which are expressed as a non-linear function of input variables based on the collected experimental input-output data. The developed model prediction accuracy for practical usefulness was tested with 10 random experimental conditions. The decision variables for higher mould hardness and permeability were determined using desirability function approach. The prediction results were found to be consistent with experimental values.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 162-170
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Free Vibration Analysis of A357 Alloy Reinforced with Dual Particle Size Silicon Carbide Metal Matrix Composite Plates Using Finite Element Method
    Autorzy:
    Lakshmikanthan, A.
    Mahesh, V.
    Prabhu, R. T.
    Patel, M. G. C.
    Bontha, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837831.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    finite element method
    shear deformation theory
    FSDT
    A357 alloy
    Hamilton’s principle
    A357/DPS-SiC
    composites
    metoda elementów skończonych
    teoria odkształceń
    stop A357
    zasada Hamiltona
    kompozyty
    Opis:
    In this work, the free vibration behaviour of A357 composite plate reinforced with dual particle size (DPS) (3 wt.% coarse + 3 wt.% fine, 4 wt.% coarse + 2 wt.% fine, and 2 wt.% coarse + 4 wt.% fine) SiC is evaluated using the finite element method. To this end, first-order shear deformation theory (FSDT) has been used. The equations of motion have been derived using Hamilton’s principle and the solution has been obtained through condensation technique. A thorough parametric study was conducted to understand the effect of reinforcement size and weight fraction, boundary conditions, aspect ratio and length-to-width ratio of plate geometry on natural frequencies of A357/DPS-SiC composite plates. Results reveal significant influence of all the above variables on natural frequency of the composite plates. In all the cases, A357 composite plate reinforced with 4 wt.% coarse and 2 wt.% fine SiC particles displayed the highest natural frequency owing to its higher elastic and rigidity modulus. Further, the natural frequencies increase with decrease in aspect ratio of the plate geometry. Natural frequency also decreases with increase in the number of free edges. Lastly, increasing the length-to-width ratio drastically improves the natural frequency of the plates.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 1; 101-112
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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