Challenges and Advances in Chemical Science Vol. 3最新文献

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Estimation of Cinnamoyl Derivatives from Cordia Platythyrsa and Chemiotaxonomical Value of the Cordia Genus 桔梗肉桂基衍生物的鉴定及桔梗属的化学分类价值
Challenges and Advances in Chemical Science Vol. 3 Pub Date : 2021-08-05 DOI: 10.9734/bpi/cacs/v3/3235f
B. Dabolé, R. Zeukang, A. T. Atchadé, T. Tabopda, B. Koubala, J. Mbafor
{"title":"Estimation of Cinnamoyl Derivatives from Cordia Platythyrsa and Chemiotaxonomical Value of the Cordia Genus","authors":"B. Dabolé, R. Zeukang, A. T. Atchadé, T. Tabopda, B. Koubala, J. Mbafor","doi":"10.9734/bpi/cacs/v3/3235f","DOIUrl":"https://doi.org/10.9734/bpi/cacs/v3/3235f","url":null,"abstract":"The aim of this study was to investigate the roots and the stem barks of Cordia platythyrsa with the view to improve the chemiotaxonomy value in the Cordia genus. Phytochemical investigation of the roots and stem barks of Cordia platythyrsa (Boraginaceae) had led to the isolation of two new cinnamates, the cordicinnamate A compound 1 and the cordicinnamate B compound 2 along with four known compounds. Their structures were established by spectroscopic analysis mainly FAB and TOF –MS, 1H NMR and 13C NMR, COSY, HMBC, HSQC and by comparison with literature data. The cinnamoyl derivatives were reported for the first time in the Cordia genus. The isolation and identification of cinnamoyl derivatives in cordia genus improve the chemiotaxonomy value in this genus.","PeriodicalId":9714,"journal":{"name":"Challenges and Advances in Chemical Science Vol. 3","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85525282","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}
引用次数: 0
A DFT Study on Theoretical Investigation of Application of Combining Pristine C60 and doped C60 with Silicon and Germanium Atoms for Solar cells 原始C60和掺杂C60与硅、锗原子结合应用于太阳能电池的DFT理论研究
Challenges and Advances in Chemical Science Vol. 3 Pub Date : 2021-08-05 DOI: 10.9734/bpi/cacs/v3/2819f
Leila Hojatkashani̇
{"title":"A DFT Study on Theoretical Investigation of Application of Combining Pristine C60 and doped C60 with Silicon and Germanium Atoms for Solar cells","authors":"Leila Hojatkashani̇","doi":"10.9734/bpi/cacs/v3/2819f","DOIUrl":"https://doi.org/10.9734/bpi/cacs/v3/2819f","url":null,"abstract":"Solar energy and its conversion to electricity is an important research in the last decade. Solar cells are consist of a p-type semiconductor as donor and an n-type semiconductor as acceptor. Organic polymers as organic semiconductors are used in an organic solar cell. This research is a theoretical investigation of Fullerene C60 as donor and C60 doped derivatives with Silicon and Germanium atoms as acceptors for basic structure of a solar cell. This research is done not only with using related equations but also with investigating theoretical UV-VIS spectrum of  the chosen donors-acceptors and their absorption wavelengths, oscillator strength and maximum coefficient absorptions of these  solar cells.","PeriodicalId":9714,"journal":{"name":"Challenges and Advances in Chemical Science Vol. 3","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83878838","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}
引用次数: 0
A Detailed Analysis of Nitrates and Nitrites in Groundwater of Ilorin Environs 伊洛林近郊地下水中硝酸盐和亚硝酸盐的详细分析
Challenges and Advances in Chemical Science Vol. 3 Pub Date : 2021-01-01 DOI: 10.9734/bpi/cacs/v3/2438f
Oluwadurotimi, Akiwumi, Omodélé, Eletta, Oluyemi, Odebunmi
{"title":"A Detailed Analysis of Nitrates and Nitrites in Groundwater of Ilorin Environs","authors":"Oluwadurotimi, Akiwumi, Omodélé, Eletta, Oluyemi, Odebunmi","doi":"10.9734/bpi/cacs/v3/2438f","DOIUrl":"https://doi.org/10.9734/bpi/cacs/v3/2438f","url":null,"abstract":"","PeriodicalId":9714,"journal":{"name":"Challenges and Advances in Chemical Science Vol. 3","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79491406","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}
引用次数: 1
Experimental Investigation Highlighting Performance and Emission Characteristics of Algae Bio-Fuelled Diesel Engine 藻类生物燃料柴油机性能与排放特性的实验研究
Challenges and Advances in Chemical Science Vol. 3 Pub Date : 2021-01-01 DOI: 10.9734/bpi/cacs/v3/11532d
J. Kuberan, N. Alagumurthi
{"title":"Experimental Investigation Highlighting Performance and Emission Characteristics of Algae Bio-Fuelled Diesel Engine","authors":"J. Kuberan, N. Alagumurthi","doi":"10.9734/bpi/cacs/v3/11532d","DOIUrl":"https://doi.org/10.9734/bpi/cacs/v3/11532d","url":null,"abstract":"During recent years the increasing consumption of fossil fuel has led to the search for alternative energy. Microalgae emerged as one of the potential sources of Bio-fuels from algae, and it is mostly preferred because it is sustainable and environment-friendly. The oil extracted from spirulina and chlorella microalgae through pyrolysis process at a temperature of 350oC, and the bio-oil properties were analysed. When compared to spirulina bio-oil, the viscosity and density of chlorella bio-oil were very close to the conventional diesel fuel. The Experiment was conducted in a single cylinder four stroke diesel engine for various loading conditions and was carried out for B10 blend for spirulina and chlorella algae bio-fuel, CL10D90 showed maximum output power at 100% load condition has been nearly same for diesel fuel than SP10D90, and the Specific fuel consumption is nearly same when compared with diesel. The Brake thermal efficiency of CL10D90 increases by 4% than SP10 D90 and 2% than diesel, and the combustion characteristic of peak heat release rate is higher and also there is a reduction in HC, CO emission at full load, with slight increase in NOX emission. The experimental result shows that the use of CL10D90 bio-oil in diesel engine is a suitable alternative to diesel.","PeriodicalId":9714,"journal":{"name":"Challenges and Advances in Chemical Science Vol. 3","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81450184","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}
引用次数: 5
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