Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1607
R. Djebaili, N. Melkemi, S. Kenouche, I. Daoud, M. Bouachrine, H. Hazhazi, Toufik Salah
{"title":"Combined Conceptual-DFT, Quantitative MEP Analysis, and Molecular Docking Study of Benzodiazepine Analogs","authors":"R. Djebaili, N. Melkemi, S. Kenouche, I. Daoud, M. Bouachrine, H. Hazhazi, Toufik Salah","doi":"10.17807/orbital.v13i4.1607","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1607","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41387791","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}
Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1657
P. Donate, Hugo Barbosa
{"title":"Microwave Radiation Applied to the Synthesis of -butyrolactone Derivatives","authors":"P. Donate, Hugo Barbosa","doi":"10.17807/orbital.v13i4.1657","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1657","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49091255","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}
Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1559
G. Delgado, S. Durán, J. Aitken, M. Muñoz, P. Grima-Gallardo
{"title":"The Crystal Structure of the New Layered Alloy (CuGa)0.52TaSe2 Studied by SEM, DTA, and XRPD","authors":"G. Delgado, S. Durán, J. Aitken, M. Muñoz, P. Grima-Gallardo","doi":"10.17807/orbital.v13i4.1559","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1559","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43013606","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}
Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1576
M. Verma, Renu Sharma, R. Bharti
{"title":"Solid-Liquid Phase Transfer Catalyzed Selective Reduction of Bifunctional Moieties","authors":"M. Verma, Renu Sharma, R. Bharti","doi":"10.17807/orbital.v13i4.1576","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1576","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48024775","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}
Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1585
A. Verma, R. Bharti, Renu Sharma
{"title":"Effect of Methods and Catalysts on the One-pot Synthesis of Tetrahydropyridine Derivatives: A Mini-Review","authors":"A. Verma, R. Bharti, Renu Sharma","doi":"10.17807/orbital.v13i4.1585","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1585","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42770398","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}
Pub Date : 2021-10-05DOI: 10.17807/orbital.v13i4.1580
Mohamed Jabha, Abdellah El Alaoui, A. Jarid, E. Mabrouk
{"title":"The Effect of Substitution and Polymerization of 2,7-Divinylcarbazole-benzo-bis-thiadiazole on Optoelectronic Properties: A DFT Study","authors":"Mohamed Jabha, Abdellah El Alaoui, A. Jarid, E. Mabrouk","doi":"10.17807/orbital.v13i4.1580","DOIUrl":"https://doi.org/10.17807/orbital.v13i4.1580","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47186188","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}
Pub Date : 2021-07-06DOI: 10.17807/ORBITAL.V13I3.1603
Marta Maria de Moura Bezerra, M. C. Oliveira, Weber Duarte Mesquita, Amilton Brito da Silva Junior, E. Longo, M. Gurgel
{"title":"An Ab Initio Analysis of Structural and Electronic Properties of Cubic SrSnO3","authors":"Marta Maria de Moura Bezerra, M. C. Oliveira, Weber Duarte Mesquita, Amilton Brito da Silva Junior, E. Longo, M. Gurgel","doi":"10.17807/ORBITAL.V13I3.1603","DOIUrl":"https://doi.org/10.17807/ORBITAL.V13I3.1603","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46657317","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}
Pub Date : 2021-07-06DOI: 10.17807/ORBITAL.V13I3.1584
V. Tkach, M. Kushnir, S. C. D. Oliveira, M. Zavhorodnii, O. Brazhko, M. Kornet, O. Luganska, V. Kopiika, Y. Ivanushko, Mariia P. Mytchenok, Oleksandra V. Ahafonova, P. Yagodynets, Z. Kormosh, L. V. Reis
{"title":"The Theoretical Description for a Sucralose Electrochemical Cathodical Determination over a 9-9´-Diacridyl-modified Electrode","authors":"V. Tkach, M. Kushnir, S. C. D. Oliveira, M. Zavhorodnii, O. Brazhko, M. Kornet, O. Luganska, V. Kopiika, Y. Ivanushko, Mariia P. Mytchenok, Oleksandra V. Ahafonova, P. Yagodynets, Z. Kormosh, L. V. Reis","doi":"10.17807/ORBITAL.V13I3.1584","DOIUrl":"https://doi.org/10.17807/ORBITAL.V13I3.1584","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49428274","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}
Pub Date : 2021-06-30DOI: 10.17807/orbital.v13i2.1488
Douglas Santos de Oliveira, S. Jaerger, R. Marangoni
{"title":"Mechanochemical Synthesis of Expanded Vermiculite with Urea for Filler into Alginate/Collagen Spherical Capsules: A Urea Slow-release System","authors":"Douglas Santos de Oliveira, S. Jaerger, R. Marangoni","doi":"10.17807/orbital.v13i2.1488","DOIUrl":"https://doi.org/10.17807/orbital.v13i2.1488","url":null,"abstract":"","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47429630","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}
Pub Date : 2021-06-30DOI: 10.17807/orbital.v13i2.1449
Gislaine Pucholobek, Camila Kulek de Andrade, S. Quináia
Stingless bee honey is a product used for different purposes due to its composition, in which the presence of metallic species is highlighted. Depending on their amount, they may have either a nourishing or a toxic effect. Flame atomic absorption spectrometry (FAAS) is a commonly used technique for quantifying metals in samples such as honey. However, because of the complexity of the matrix, the sample must go through a preparation step for the analytes to be available for quantification. In the present work, a fast and efficient sample preparation method for the quantification of metallic ions in stingless bee honey was optimized, from the direct analysis of slurries using FAAS. The samples were suspended using honey (1.0 g and 2.5 g), nitric acid (1.4 mol L -1 and 0.2 mol L -1 ), hydrogen peroxide (1% and 3%) and ultrasonic agitation (5 and 10 minutes). Then, the proposed analytical method was validated by evaluating parameters such as linearity, limits of detection and quantification, precision and accuracy, all with adequate values compared to those established in the literature. DOI: http://dx.doi.org/10.17807/orbital.v13i2.1449
由于其成分，无刺蜂蜜是一种用于不同目的的产品，其中金属物种的存在是突出的。根据它们的数量，它们可能有滋补作用或毒性作用。火焰原子吸收光谱法(FAAS)是测定蜂蜜等样品中金属含量的常用技术。然而，由于基质的复杂性，样品必须经过一个制备步骤，分析物才能用于定量。本文从火焰吸收光谱法直接分析无刺蜂蜂蜜液中金属离子的角度出发，优化了一种快速高效的样品制备方法。用蜂蜜(1.0 g和2.5 g)、硝酸(1.4 mol L -1和0.2 mol L -1)、过氧化氢(1%和3%)和超声波搅拌(5和10分钟)悬浮样品。然后，通过评价线性度、检出限和定量限、精密度和准确度等参数对所提出的分析方法进行了验证，与文献中建立的分析方法相比，这些参数都具有足够的值。DOI: http://dx.doi.org/10.17807/orbital.v13i2.1449
{"title":"Development of an Analytical Method for Rapid Metal Determination in Stingless Bee Honey","authors":"Gislaine Pucholobek, Camila Kulek de Andrade, S. Quináia","doi":"10.17807/orbital.v13i2.1449","DOIUrl":"https://doi.org/10.17807/orbital.v13i2.1449","url":null,"abstract":"Stingless bee honey is a product used for different purposes due to its composition, in which the presence of metallic species is highlighted. Depending on their amount, they may have either a nourishing or a toxic effect. Flame atomic absorption spectrometry (FAAS) is a commonly used technique for quantifying metals in samples such as honey. However, because of the complexity of the matrix, the sample must go through a preparation step for the analytes to be available for quantification. In the present work, a fast and efficient sample preparation method for the quantification of metallic ions in stingless bee honey was optimized, from the direct analysis of slurries using FAAS. The samples were suspended using honey (1.0 g and 2.5 g), nitric acid (1.4 mol L -1 and 0.2 mol L -1 ), hydrogen peroxide (1% and 3%) and ultrasonic agitation (5 and 10 minutes). Then, the proposed analytical method was validated by evaluating parameters such as linearity, limits of detection and quantification, precision and accuracy, all with adequate values compared to those established in the literature. DOI: http://dx.doi.org/10.17807/orbital.v13i2.1449","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48254339","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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