Ecletica Quimica最新文献

Optimizing sewage water of Perum Pesona Permata Gading with the assistance of Cu/Mg electrodes as public street lighting based on green technology electricity 在铜镁电极的帮助下优化 Perum Pesona Permata Gading 的污水，将其作为基于绿色技术的公共街道照明用电

Ecletica Quimica Pub Date : 2024-05-21 DOI: 10.26850/1678-4618.eq.v49.2024.e1496

Deni Ainur Rokhim, Diana Novel Smith, Alfredo Radinal Mukhtar, Azzahra Zafira Putri Koto

{"title":"Optimizing sewage water of Perum Pesona Permata Gading with the assistance of Cu/Mg electrodes as public street lighting based on green technology electricity","authors":"Deni Ainur Rokhim, Diana Novel Smith, Alfredo Radinal Mukhtar, Azzahra Zafira Putri Koto","doi":"10.26850/1678-4618.eq.v49.2024.e1496","DOIUrl":"https://doi.org/10.26850/1678-4618.eq.v49.2024.e1496","url":null,"abstract":"Electricity in Indonesia uses fossil fuels as an energy source. If fossil fuels run out, we will lose our largest source of electrical energy. Therefore, we need a way to reduce dependence on fossil fuels by making good use of renewable energy as a source of electrical energy. One of them is Green Technology Electricity with the utilization of sewage water to convert chemical energy into electrical energy. This study aims to determine the potential of sewage water assisted by Cu/Mg electrodes as a source of street lighting, manufacturing, and testing methods, and the effect of optimizing sewage water on electrical performance as street lighting. Lack of lighting in residential areas is also a supporting factor in this research. The stages used are preparation, incubation, construction assembly, research, and strength testing. Based on research, the sewage water from Perum Pesona Permata Gading can be used as street lighting with the highest potential difference and current strength being 4.4 V and 0.55 A for each 50 mL of the sewage water.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"142 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141114496","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

Estimation of nitrogen dioxide levels on streets from Fortaleza Brazil using passive sampling and multivariate analysis 利用被动采样和多元分析估算巴西福塔雷萨街道的二氧化氮水平

Ecletica Quimica Pub Date : 2024-05-20 DOI: 10.26850/1678-4618.eq.v49.2024.e1505

Francisco Wagner De Sousa, Maxwell Lima Maia, Wendy Fernandes Lavigne Quintanilha, D. R. Cassiano, B. V. Bertoncini, Ronaldo Ferreira do Nascimento, Cleidiane Silva Oliveira, Jefferson Pereira Ribeiro

{"title":"Estimation of nitrogen dioxide levels on streets from Fortaleza Brazil using passive sampling and multivariate analysis","authors":"Francisco Wagner De Sousa, Maxwell Lima Maia, Wendy Fernandes Lavigne Quintanilha, D. R. Cassiano, B. V. Bertoncini, Ronaldo Ferreira do Nascimento, Cleidiane Silva Oliveira, Jefferson Pereira Ribeiro","doi":"10.26850/1678-4618.eq.v49.2024.e1505","DOIUrl":"https://doi.org/10.26850/1678-4618.eq.v49.2024.e1505","url":null,"abstract":"The increase in the fleet of motor vehicles circulating in urban centers is one of the main generators of gaseous pollutants harmful to human health and the environment. Pollutants can be economically and effectively monitored through passive sampling. This study aims to estimate NO2 levels on roads of Fortaleza city /CE using the passive sampling method. 12 campaigns covered the rainy (March-June) and the dry (July-November) seasons in 2019. The seasonal averages of NO2 in the rainy season were higher than the dry one, and Almirante Rubim Street showed the greatest difference in the averages: 26.6 µg m-3 in the rainy and 19.3 µg m-3 in the dry season. The principal component analysis applied to the averages of NO2 concentration in the rainy and dry seasons, vehicle traffic and Height of the road/width ratio indicated that components 1, 2 and 3 explain 94.4% of the studied cases. Passive sampling proved to be efficient, contributing to the production of unpublished data about NO2 levels in streets of Fortaleza/Ceará/Brazil from mobile sources.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"42 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141121974","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

Complex compound of trinitrotriamminecobalt(III): in theoretical studies 三硝基三氨基钴（III）的复合物：理论研究

Ecletica Quimica Pub Date : 2024-02-16 DOI: 10.26850/1678-4618.eq.v49.2024.e1491

Deni Ainur Rokhim, M.Roy Asrori, H. W. Wijaya

引用次数: 0

In memoriam of Cecilia Laluce (1940 - 2023) 悼念塞西莉亚-拉鲁斯（1940 - 2023）

Ecletica Quimica Pub Date : 2024-02-01 DOI: 10.26850/1678-4618eq.v49.2024.e1535

A. Massabni, Maria Celia Bertolini

引用次数: 0

Phytochemical screening, antiproliferative evaluation, and molecular docking studies of Acacia nilotica fruit from Nigeria 尼日利亚金合欢果实的植物化学筛选、抗增殖评价和分子对接研究

Ecletica Quimica Pub Date : 2024-01-18 DOI: 10.26850/1678-4618eq.v49.2024.e1512

William Ojoniko Anthony, E. O. Okpala, Kehinde Gabriel Obiyenwa, Godfrey Okechukwu Eneogwe, B. Semire

{"title":"Phytochemical screening, antiproliferative evaluation, and molecular docking studies of Acacia nilotica fruit from Nigeria","authors":"William Ojoniko Anthony, E. O. Okpala, Kehinde Gabriel Obiyenwa, Godfrey Okechukwu Eneogwe, B. Semire","doi":"10.26850/1678-4618eq.v49.2024.e1512","DOIUrl":"https://doi.org/10.26850/1678-4618eq.v49.2024.e1512","url":null,"abstract":"Acacia nilotica, (Fabaceae), is valued for its medicinal properties. We examine the antiproliferative properties of the aqueous fruit extract of A. nilotica. Aqueous extract from Acacia has been associated with potential anticancer effects in fruits and vegetables through screening, antiproliferative, and molecular docking evaluation. Phytochemical screening reveals the presence of alkaloids, saponins, tannins, flavonoids, steroids, and carbohydrates. The extracts showed significant antiproliferative effects at eight concentrations (8�50 mg�mL�1) examined in comparison to the standard (methotrexate). When compared to Sorghum bicolor seed radicles treated with methotrexate at 48, 72, and 96 h, 50 mg�mL�1 extract significantly inhibited the generation of seed radicals, with potent inhibitions of 87.06, 83.48, and 81.45%. Analysis of molecular docking results showed that [(2R,3S)-2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-3,4-dihydro-2H-chromen-7-yl]3,4,5-trihydroxybenzoate (D21), (5R,9R,10R,13S,14S,17S)-17-[(2S,4R)-4-[(2S)-3,3-dimethyloxiran-2-yl]-4-hydroxybutan-2-yl]-4,4,10,13,14-pentamethyl-1,2,5,6,9,11,12,15,16,17-decahydrocyclopenta[a]phenanthren-3-one (D28) and [(2R,3S)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-3,4-dihydro-2H-chromen-5-yl] 3,4,5-trihydroxybenzoate (D29) have strong tendency to inhibit dihydrofolate reductase (1VDR), capase-9 (6J15) and Mycobacterium tuberculosis (Mtb) (6J17) better than methotrexate and azacitidine, known antiproliferative drugs. These findings support the use of A. nilotica in traditional medicine for the treatment of tuberculosis and cancer.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"14 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140504244","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

Predicting the biological activity of selected phytochemicals in Alsophila spinulosa leaves against 4-aminobutyrate-aminotransferase: A potential antiepilepsy agents 预测桫椤叶中某些植物化学物质对 4-氨基丁酸-氨基转移酶的生物活性：一种潜在的抗癫痫药

Ecletica Quimica Pub Date : 2024-01-03 DOI: 10.26850/1678-4618.eq.v49.2024.e1492

O. A. Kolawole, Olujinmi Faith Eniola, Akintelu Sunday Adewale, Adetuyi Babatunde, Ogunlana Olubanke, Semire Banjo, A. E. Temitope, A. C. Olufunke, Babalola Jonathan Oyebamiji, Olawoye Bolanle Mary, Aworinde Juliana Oluwasayo

{"title":"Predicting the biological activity of selected phytochemicals in Alsophila spinulosa leaves against 4-aminobutyrate-aminotransferase: A potential antiepilepsy agents","authors":"O. A. Kolawole, Olujinmi Faith Eniola, Akintelu Sunday Adewale, Adetuyi Babatunde, Ogunlana Olubanke, Semire Banjo, A. E. Temitope, A. C. Olufunke, Babalola Jonathan Oyebamiji, Olawoye Bolanle Mary, Aworinde Juliana Oluwasayo","doi":"10.26850/1678-4618.eq.v49.2024.e1492","DOIUrl":"https://doi.org/10.26850/1678-4618.eq.v49.2024.e1492","url":null,"abstract":"The use of medicinal plants as an alternative mean of treating various diseases has drawn the attention of several researchers. The desire to find lasting solutions to epilepsy among humans increases every day. Thus, this work was aimed at investigating the potential capacity of the studied phytochemicals in Alsophila spinulosa against human 4-aminobutyrate-aminotransferase as well as to predict the nonbonding interactions involved in the studied complexes. In this work, ten compounds with biological activities were selected and studied using molecular docking method. The molecules selected obtained from A. spinulosa leaves were optimized and various descriptors that described the anti-4-aminobutyrate-aminotransferase features were obtained. More so, 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-4H-chromen-4-one (compound 9) with highest binding affinity proved to have greater strength to inhibit 4-aminobutyrate-aminotransferase thereby downregulating epilepsy than other studied compounds and the reference drug (clobazam). The ADMET features of both compound 9 and clobazam were explored and reported.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"289 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140514461","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

Variation in the chemical composition of essential oils from Mangifera indica L. leaves by comprehensive two-dimensional gas chromatography 利用综合二维气相色谱法研究芒果叶精油化学成分的变化

Ecletica Quimica Pub Date : 2023-10-03 DOI: 10.26850/1678-4618eqj.v48.4.2023.p27-36

C. Cardoso, E. Caramão, Thiago Luis Aguayo de Castro, E. Simionatto

{"title":"Variation in the chemical composition of essential oils from Mangifera indica L. leaves by comprehensive two-dimensional gas chromatography","authors":"C. Cardoso, E. Caramão, Thiago Luis Aguayo de Castro, E. Simionatto","doi":"10.26850/1678-4618eqj.v48.4.2023.p27-36","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v48.4.2023.p27-36","url":null,"abstract":"The leaves of Mangifera indica L. have been used in the medical system of India to treat diseases such as asthma, dysentery, cough, leucorrhea, jaundice, pain, and malaria. The analysis of different varieties of the same species is intended to determine if the compounds have a differential distribution. The present study investigates the volatile compounds from the leaves of two M. indica varieties extracted by hydrodistillation and analyzed by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC�GC/TOFMS). The number of compounds identified by GC�GC/TOFMS was superior to that obtained by gas chromatography/mass spectrometry (GC/MS) for the same variety of M. indica. This study demonstrates the applicability of the GC�GC/TOFMS for the comprehensive profiling of essential oils from M. indica, in which 125 and 95 compounds were identified in the varieties �espada� and �cora��o de boi�, respectively. These results show that the compositions of the two analyzed essential oils present differences concerning the GC�GC/TOFMS and conventional chromatography technique, the GC/MS.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139324051","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

Is the use of the Problem-Based Learning Model through Instagram effective? A Review 通过 Instagram 使用基于问题的学习模式是否有效？回顾

Ecletica Quimica Pub Date : 2023-10-03 DOI: 10.26850/1678-4618eqj.v48.4.2023.p17-26

H. Widarti, Allykha Baharsyah, Deni Ainur Rokhim, A. B. Syafruddin

引用次数: 0

Multivariate statistical analysis of physicochemical parameters of groundwater quality using PCA and HCA techniques 利用 PCA 和 HCA 技术对地下水质量的物理化学参数进行多元统计分析

Ecletica Quimica Pub Date : 2023-10-03 DOI: 10.26850/1678-4618eqj.v48.4.2023.p37-47

A.J. Ferreira Gadelha, Clarice Oliveira da Rocha, José Germano Véras Neto, Mirelly Alexandre Gomes

{"title":"Multivariate statistical analysis of physicochemical parameters of groundwater quality using PCA and HCA techniques","authors":"A.J. Ferreira Gadelha, Clarice Oliveira da Rocha, José Germano Véras Neto, Mirelly Alexandre Gomes","doi":"10.26850/1678-4618eqj.v48.4.2023.p37-47","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v48.4.2023.p37-47","url":null,"abstract":"Multivariate analysis techniques are powerful tools in the study of groundwater quality, providing an expanded view of quality parameters. This work presents a multivariate analysis of groundwater quality in the city of Sousa, Paraíba state, through the techniques of principal component analysis (PCA) and hierarchical cluster analysis (HCA). Samples from 13 tubular wells were collected in different districts of the city of Sousa, during the rainy and dry seasons. For these samples, 11 parameters were analyzed: hydrogenic potential (pH), total dissolved solids, total alkalinity, carbonates, bicarbonates, total hardness, magnesium, calcium, sodium, potassium, and chlorides. PC1, PC2, PC3 and PC4 explain 87.48% of the total variance of the data. The PCA shows that there was a change in patterns between the analyzed periods. The correlation matrix corroborates the PCA data, showing the relationships between the physical-chemical variables evaluated. The HCA confirmed the correlations between the samples, making it possible to assess the degree of similarity between the composition of the wells and between the parameters evaluated.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139323885","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

Scientific recreations to favor the learning of the periodic table in high school students with incomplete schooling 通过科学娱乐促进未完成学业的高中生学习元素周期表

Ecletica Quimica Pub Date : 2023-10-03 DOI: 10.26850/1678-4618eqj.v48.4.2023.p48-56

Havdih Castro Valdiviezo, Mario Adelfo Batista Zaldívar

{"title":"Scientific recreations to favor the learning of the periodic table in high school students with incomplete schooling","authors":"Havdih Castro Valdiviezo, Mario Adelfo Batista Zaldívar","doi":"10.26850/1678-4618eqj.v48.4.2023.p48-56","DOIUrl":"https://doi.org/10.26850/1678-4618eqj.v48.4.2023.p48-56","url":null,"abstract":"Didactic games for science teaching contribute to student learning and break with traditional teaching models. The objective of this study was to implement a didactic guide with scientific recreations to favor the learning of the periodic table in students with incomplete schooling in the 2022�2023 school year. For this purpose, an experimental, field and explanatory research was used. A population study was carried out with 60 students of the first year of high school of the �Velasco Ibarra� Fiscal Educational Unit. The main theoretical and empirical methods were used, as well as descriptive and inferential statistics for data processing, analysis and interpretation. A didactic guide with scientific recreations was elaborated to favor the learning of the periodic table in students with unfinished schooling, which was applied to the students of the �Velasco Ibarra� Fiscal Educational Unit, in the 2022�2023 school year. It was corroborated that the didactic guide with scientific recreations applied significantly improved the students� learning of the periodic table.","PeriodicalId":35894,"journal":{"name":"Ecletica Quimica","volume":"192 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139324041","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