{"title":"The use of D-Optimal Mixture Design in the development of date stone and spirulina tablet formulation as a phycocyanin dietary supplement","authors":"Iness Jabri karoui, Majdi Hammami, M. Abderrabba","doi":"10.5802/crchim.222","DOIUrl":"https://doi.org/10.5802/crchim.222","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45215722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Computing the distance function to some surface or line is a problem that occurs very frequently. There are several ways of computing a relevant approximation of this function, using for example technique originating from the approximation of Hamilton Jacobi problems, or the fast sweeping method. Here we make a link with some elliptic problem and propose a very fast way to approximate the distance function.
{"title":"Evaluating a distance function","authors":"Rémi Abgrall","doi":"10.5802/crmeca.155","DOIUrl":"https://doi.org/10.5802/crmeca.155","url":null,"abstract":"Computing the distance function to some surface or line is a problem that occurs very frequently. There are several ways of computing a relevant approximation of this function, using for example technique originating from the approximation of Hamilton Jacobi problems, or the fast sweeping method. Here we make a link with some elliptic problem and propose a very fast way to approximate the distance function.","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135947248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. B. Gogol, I. Rozhkovoy, Danyar T. Sadyrbekov, S. Aldabergenova, A. Makasheva
{"title":"Kinetic aspects of malachite deposition on marble from copper lactate solutions","authors":"D. B. Gogol, I. Rozhkovoy, Danyar T. Sadyrbekov, S. Aldabergenova, A. Makasheva","doi":"10.5802/crchim.220","DOIUrl":"https://doi.org/10.5802/crchim.220","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42248943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Alaaeddine, V. Ladmiral, Wassim El Malti, Lolwa Haydar, S. Caillol, B. Améduri
{"title":"Synthesis and characterization of original fluorinated bis-cyclic carbonates and xanthates from a fluorinated epoxide","authors":"Ali Alaaeddine, V. Ladmiral, Wassim El Malti, Lolwa Haydar, S. Caillol, B. Améduri","doi":"10.5802/crchim.216","DOIUrl":"https://doi.org/10.5802/crchim.216","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45677270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maxwell models for viscoelastic flows are famous for their potential to unify elastic motions of solids with viscous motions of liquids in the continuum mechanics perspective. But the usual Maxwell models allow one to define well motions mostly for one-dimensional flows only. To define unequivocal multi-dimensional viscoelastic flows (as solutions to well-posed initial-value problems) we advocated in [ESAIM:M2AN 55 (2021), p. 807-831] an upper-convected Maxwell model for compressible flows with a symmetric-hyperbolic formulation. Here, that model is derived again, with new details.
粘弹性流动的麦克斯韦模型以其从连续介质力学角度统一固体的弹性运动和液体的粘性运动的潜力而闻名。但是通常的麦克斯韦模型只允许人们定义一维流动的井运动。我们在[ESAIM:M2AN 55 (2021)， p. 807-831]中提出了一个具有对称双曲公式的可压缩流动的上对流Maxwell模型，以定义明确的多维粘弹性流动(作为良好定初值问题的解)。在这里，这个模型又衍生出来了，有了新的细节。
{"title":"A viscoelastic flow model of Maxwell-type with a symmetric-hyperbolic formulation","authors":"Sébastien Boyaval","doi":"10.5802/crmeca.165","DOIUrl":"https://doi.org/10.5802/crmeca.165","url":null,"abstract":"Maxwell models for viscoelastic flows are famous for their potential to unify elastic motions of solids with viscous motions of liquids in the continuum mechanics perspective. But the usual Maxwell models allow one to define well motions mostly for one-dimensional flows only. To define unequivocal multi-dimensional viscoelastic flows (as solutions to well-posed initial-value problems) we advocated in [ESAIM:M2AN 55 (2021), p. 807-831] an upper-convected Maxwell model for compressible flows with a symmetric-hyperbolic formulation. Here, that model is derived again, with new details.","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":"112 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136251986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haining Li, Tiantian Zhang, K. Tang, Binglin Li, Xiaoli Zhang, Binxia Zhao, Jiao Wang
{"title":"Preparation of hyperbranched 4-dimethylaminopyridine catalyst for the efficient synthesis of vitamin E succinate","authors":"Haining Li, Tiantian Zhang, K. Tang, Binglin Li, Xiaoli Zhang, Binxia Zhao, Jiao Wang","doi":"10.5802/crchim.219","DOIUrl":"https://doi.org/10.5802/crchim.219","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46542636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Papamichael, Foteini Tsiolaki, M. Stylianou, I. Voukkali, G. Sourkouni, Nikolaos Argirusis, C. Argirusis, A. Zorpas
{"title":"Evaluation of the effectiveness and performance of environmental impact assessment studies in Greece","authors":"I. Papamichael, Foteini Tsiolaki, M. Stylianou, I. Voukkali, G. Sourkouni, Nikolaos Argirusis, C. Argirusis, A. Zorpas","doi":"10.5802/crchim.218","DOIUrl":"https://doi.org/10.5802/crchim.218","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42590444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ariane de Espindola, S. Miron, P. Dutournié, A. Ponche
. To obtain high quality final products, biomolecules can be exposed in production lines to stress factors such as heating, stirring and multiple surfaces contact before their commercialization. These factors can induce stability and e ffi cacy loss. In this work, the antibacterial activity of lysozyme (LSZ),aproteinusedasantibioticwhichactsbydisruptingthebacterialcellwall,wasstudiedaftertwo operations: heating and ultrafiltration. Antibacterial activity after extreme stress factors is expected to decrease due to conformational changes in the protein molecule. It was observed that ultrafiltration can promote an activity decrease proportional to the applied transmembrane pressure of a non-treatedlysozyme.However,whenathermallytreatedlysozyme(90°C)wasfiltered,noadditionale ff ect was observed due to the pore passage, independently of the applied pressure.
{"title":"Ultrafiltration operational conditions influence in the antibacterial activity of native and thermally treated lysozyme","authors":"Ariane de Espindola, S. Miron, P. Dutournié, A. Ponche","doi":"10.5802/crchim.217","DOIUrl":"https://doi.org/10.5802/crchim.217","url":null,"abstract":". To obtain high quality final products, biomolecules can be exposed in production lines to stress factors such as heating, stirring and multiple surfaces contact before their commercialization. These factors can induce stability and e ffi cacy loss. In this work, the antibacterial activity of lysozyme (LSZ),aproteinusedasantibioticwhichactsbydisruptingthebacterialcellwall,wasstudiedaftertwo operations: heating and ultrafiltration. Antibacterial activity after extreme stress factors is expected to decrease due to conformational changes in the protein molecule. It was observed that ultrafiltration can promote an activity decrease proportional to the applied transmembrane pressure of a non-treatedlysozyme.However,whenathermallytreatedlysozyme(90°C)wasfiltered,noadditionale ff ect was observed due to the pore passage, independently of the applied pressure.","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45202049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Asmae El Maangar, S. Prévost, S. Dourdain, T. Zemb
{"title":"Molecular mechanisms induced by phase modifiers used in hydrometallurgy: consequences on transfer efficiency and process safety","authors":"Asmae El Maangar, S. Prévost, S. Dourdain, T. Zemb","doi":"10.5802/crchim.205","DOIUrl":"https://doi.org/10.5802/crchim.205","url":null,"abstract":"","PeriodicalId":10566,"journal":{"name":"Comptes Rendus. Chimie","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49321899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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