The present analysis deals with the study of stagnation point flow of a Williamson fluid over a nonlinearly stretching sheet with thermal radiation. The partial differential equations governing this phenomenon were transformed into coupled nonlinear ordinary differential equations with suitable similarity transformations. These equations were then solved by numerical technique known as Keller Box method. The various parameters such as Prandtl number (Pr), velocity ratio parameter( �), Williamson parameter ( λ) and Radiation parameter (R) and non linear stretching parameter (n) determining the velocity and temperature distributions, the local Skin friction coefficient and the local Nusselt number governing such a flow were also analyzed. On analysis it was found that the Williamson fluid parameter ( λ) decreased both the fluid velocity whereas an increase in ( λ) increased wall skin-friction coefficient. The wall temperature gradient increased with an increase in Pr but decreased with radiation parameter R.
{"title":"Stagnation Point Flow of a Williamson Fluid over a Nonlinearly Stretching Sheet with Thermal Radiation","authors":"M. Monica, J. Sucharitha, C. Kumar","doi":"10.9734/ACSJ/2016/25144","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/25144","url":null,"abstract":"The present analysis deals with the study of stagnation point flow of a Williamson fluid over a nonlinearly stretching sheet with thermal radiation. The partial differential equations governing this phenomenon were transformed into coupled nonlinear ordinary differential equations with suitable similarity transformations. These equations were then solved by numerical technique known as Keller Box method. The various parameters such as Prandtl number (Pr), velocity ratio parameter( �), Williamson parameter ( λ) and Radiation parameter (R) and non linear stretching parameter (n) determining the velocity and temperature distributions, the local Skin friction coefficient and the local Nusselt number governing such a flow were also analyzed. On analysis it was found that the Williamson fluid parameter ( λ) decreased both the fluid velocity whereas an increase in ( λ) increased wall skin-friction coefficient. The wall temperature gradient increased with an increase in Pr but decreased with radiation parameter R.","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"27 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87228898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Characterization of Oil-Modified Alkyd Resin from Epoxidized Neem Oil","authors":"A. Anya, I. Jack, O. Osagie","doi":"10.9734/ACSJ/2016/26431","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/26431","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"29 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76088395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Babkin, D. Andreev, А. Pristanskov, L. Lisina, А. Rakhimov, N. Rakhimova, V. Belousova, G. Zaikov
{"title":"The Relationship between the Antimicrobial Properties of Benzylpenicillin and the Quantum Chemical Parameters of Its Structure (The DFT Method)","authors":"V. Babkin, D. Andreev, А. Pristanskov, L. Lisina, А. Rakhimov, N. Rakhimova, V. Belousova, G. Zaikov","doi":"10.9734/acsj/2016/22022","DOIUrl":"https://doi.org/10.9734/acsj/2016/22022","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"1 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72709183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, Characterization, DNA Binding, Antibacterial Activity and DFT Calculation of Ru(II) Complexes of Hydroxamic Acids and 1,10-Phenanthroline","authors":"R. Sahu, F. Khan","doi":"10.9734/ACSJ/2016/27299","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/27299","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"51 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91169012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. A. Pivazyan, E. Ghazaryan, R. S. Shainova, Rafael Tavalyan, A. Ayvazyan, A. Yengoyan
{"title":"Synthesis of Novel Derivatives on the Basis of 4-Hydrazinyl-6-methyl-2-(alkylthio)pyrimidines and Their Preliminary Biological Evaluation","authors":"V. A. Pivazyan, E. Ghazaryan, R. S. Shainova, Rafael Tavalyan, A. Ayvazyan, A. Yengoyan","doi":"10.9734/ACSJ/2016/28201","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/28201","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"49 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80897888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biosorption of Acid Blue 225 from Aqueous Solution by Azolla filiculoides: Kinetic and Equilibrium Studies","authors":"D. Balarak, A. Joghataei, N. Azadi, S. Sadeghi","doi":"10.9734/acsj/2016/22821","DOIUrl":"https://doi.org/10.9734/acsj/2016/22821","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"88 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76678204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A rapid, efficient and environment-friendly protocol for the synthesis of naphthopyranes has been developed by one-pot condensation of 2-naphthol, various aromatic aldehydes and benzoylacetone or 1,3-diphenyl-1,3-propandione in the presence of Cu(OTf) 2 as catalyst under ultrasonic irradiation. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield and economic availability of the catalyst.
{"title":"One-pot Synthesis of 1H-benzo[f]chromen-2-yl (phenyl)methanone Derivatives in the Presence of Copper Triflate as Catalyst Using Ultrasonic Irradiation","authors":"Tamrat Yimenu Zeleke, K. Turhan, Z. Turgut","doi":"10.9734/ACSJ/2016/24655","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/24655","url":null,"abstract":"A rapid, efficient and environment-friendly protocol for the synthesis of naphthopyranes has been developed by one-pot condensation of 2-naphthol, various aromatic aldehydes and benzoylacetone or 1,3-diphenyl-1,3-propandione in the presence of Cu(OTf) 2 as catalyst under ultrasonic irradiation. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield and economic availability of the catalyst.","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"2 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76802573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Synthesis of Atomoxetine-containing Carboxamides - Potential Human Carbonic Anhydrase Inhibitors","authors":"A. Shetnev, A. Osipyan, A. Sapegin, M. Dorogov","doi":"10.9734/acsj/2016/22245","DOIUrl":"https://doi.org/10.9734/acsj/2016/22245","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"7 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82960918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Complexes of Nickel - Nicotinate with some acid amides are synthesized aiming to vary the composition and the individual properties of the compounds obtained through coordination of the nicotinate group to aceta mide, carbomide, thiocarbomide and nicotinamide. The coordination of the organic ligands, the environment of the central ion and thermal behavior of the synthesized compounds are elucidated by vibrational spectroscopy and thermal analysis. The comparative consideration of the relative intensities and the spatial structures of Nickel - Nicotinate, and the complexes synthesized shows that the new coordination compounds differ from each other and the original components as they have individual crystal lattices. Electronic spectra of the diffuse reflection of the synthesized compounds have shown that coordination compounds of divalent Nickel have an octahedral geometry. It is experimentally verified that the compounds synthesized can be used as cotton growth stimu lators.
{"title":"Coordination Compounds of Nickel - Nicotinate with Some Acid Amides","authors":"M. Ibragimova","doi":"10.9734/ACSJ/2016/25856","DOIUrl":"https://doi.org/10.9734/ACSJ/2016/25856","url":null,"abstract":"Complexes of Nickel - Nicotinate with some acid amides are synthesized aiming to vary the composition and the individual properties of the compounds obtained through coordination of the nicotinate group to aceta mide, carbomide, thiocarbomide and nicotinamide. The coordination of the organic ligands, the environment of the central ion and thermal behavior of the synthesized compounds are elucidated by vibrational spectroscopy and thermal analysis. The comparative consideration of the relative intensities and the spatial structures of Nickel - Nicotinate, and the complexes synthesized shows that the new coordination compounds differ from each other and the original components as they have individual crystal lattices. Electronic spectra of the diffuse reflection of the synthesized compounds have shown that coordination compounds of divalent Nickel have an octahedral geometry. It is experimentally verified that the compounds synthesized can be used as cotton growth stimu lators.","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"192 2","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91416320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of the Titrimetric and Spectrophotometric Methods for Determination of the Oxygen Content in Superconducting Cuprates","authors":"S. Georgieva, T. Nedeltcheva, A. S. Ivanova","doi":"10.9734/acsj/2016/23949","DOIUrl":"https://doi.org/10.9734/acsj/2016/23949","url":null,"abstract":"","PeriodicalId":7399,"journal":{"name":"American Chemical Science Journal","volume":"33 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2016-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84761678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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