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Wyświetlanie 1-10 z 13
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 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:
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:
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:
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:
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:
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:
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:
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 1-10 z 13

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