Orbital: The Electronic Journal of Chemistry最新文献_第3页

Development of Articulate Storyline 3-Based Digital Teaching Materials on the Subject of Atomic Structure and Periodic Elements System for SMA/MA Students in Class X 面向X班SMA/MA学生的原子结构与周期元素系统数字教材的开发

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-15 DOI: 10.17807/orbital.v15i2.17959

Dewi Lestarani, Arvinda C. Lalang, Ina Manggi

{"title":"Development of Articulate Storyline 3-Based Digital Teaching Materials on the Subject of Atomic Structure and Periodic Elements System for SMA/MA Students in Class X","authors":"Dewi Lestarani, Arvinda C. Lalang, Ina Manggi","doi":"10.17807/orbital.v15i2.17959","DOIUrl":"https://doi.org/10.17807/orbital.v15i2.17959","url":null,"abstract":"The articulate storyline 3 application is a multimedia authoring tool used to create interactive learning media with content from a combination of text, images, graphics, sound, animation, and video that is usable on various devices such as laptops, tablets, and smartphones. Teaching materials developed based on articulate storyline 3 can help independent learning. The development model used as a reference in this study is the Borg and Gall model which consists of 5 stages: preliminary studies, design and development, design validation and revision, product trial, and final product dissemination. The results of the assessment of material and media experts on the level of validity of digital teaching materials have a very valid category with a percentage of validity throughout the whole at 87.95% and 93.3%, respectively. The student response to the digital teaching material during the trial was very positive, with an average overall percentage of 95.71% in small-group trials and 95% in large-group trials. Thus, digital teaching materials based on Articulate Storyline 3 on the subject matter of atomic structure and periodic systems of these elements are suitable for use in chemistry learning activities as a source of independent learning and learning media.","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43972507","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

Scavenging Activity on Reactive Oxygen Species with Biological Relevance by Varronia curassavica curassavica对具有生物学相关性的活性氧的清除活性

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-15 DOI: 10.17807/orbital.v15i2.17939

G. Brasil, Romão Veloso, R. P. Assis, Juhan Augusto, Scardelato Pereira, Alexandre Carvalho, C. P. Soares, I. L. Brunetti, V. Isaac, Paulo Ricelli, G. Zocolo, M. Correa, André Gonzaga, dos Santos

引用次数: 0

Comparative Study of Fatty Acid Composition in Crude Vegetable Oils from Species Cultivated in Mato Grosso do Sul, Brazil 巴西南马托格罗索州栽培植物粗植物油脂肪酸组成的比较研究

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-14 DOI: 10.17807/orbital.v15i2.18168

Érico Vinícius Rocha Sanches, Geovanna Vilalva Freire, Simone Reis Santos, Gláucia Braz Alcantra, João Batista Gomes de Souza

{"title":"Comparative Study of Fatty Acid Composition in Crude Vegetable Oils from Species Cultivated in Mato Grosso do Sul, Brazil","authors":"Érico Vinícius Rocha Sanches, Geovanna Vilalva Freire, Simone Reis Santos, Gláucia Braz Alcantra, João Batista Gomes de Souza","doi":"10.17807/orbital.v15i2.18168","DOIUrl":"https://doi.org/10.17807/orbital.v15i2.18168","url":null,"abstract":"Soybean is the main oilseed cultivated in the Middle-west region of Brazil, once geoclimatic conditions favor its cultivation and underexplored species such as crambe, oilseed radish, and niger too. These species can be alternatives to eliminate the conflict between food and energy production, so the study aimed to evaluate and compare the fatty acids content of soybean, crambe, oilseed radish and niger oils by gas chromatography with flame ionization detector using two quantification methods, followed by multivariate statistical analysis to determine the similarity between the selected species and to provide safe information for the best selection and application of these oilseeds. The oil content in crambe, oilseed radish and niger seeds were 44.7% (m/m), 42.45% (m/m) and 28.19% (m/m), respectively. The major fatty acid in niger and soybean oils was linoleic acid (66.9% and 52.07% m/m, respectively), in crambe and oilseed radish was erucic acid (65.29% and 33.54% m/m, respectively). In addition, for saturated fatty acids, the presence is minor (<17%), except for niger seeds with 19.5% (m/m). Niger oil has greater similarity with soybean oil, whereas crambe and oilseed radish oils are more similar to each other. In this way, it was possible to discriminate the different fatty acids present in the oil samples by the proposed method contributing to the objective of the study and enabling better decision-making in the context like biofuels production.","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48819488","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

Development and Implementation of Augmented Reality-Based Card Game Learning Media with Environmental Literacy in Improving Students' Understanding of Carbon Compounds 基于增强现实的具有环境素养的纸牌游戏学习媒体的开发和实施，以提高学生对碳化合物的理解

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-14 DOI: 10.17807/orbital.v15i2.17617

Ananta Ardyansyah, Sri Rahayu

{"title":"Development and Implementation of Augmented Reality-Based Card Game Learning Media with Environmental Literacy in Improving Students' Understanding of Carbon Compounds","authors":"Ananta Ardyansyah, Sri Rahayu","doi":"10.17807/orbital.v15i2.17617","DOIUrl":"https://doi.org/10.17807/orbital.v15i2.17617","url":null,"abstract":"The lack of knowledge integration about the learning environment is one of the causes of the low environmental awareness. The purpose of this study was to develop learning media for carbon compounds based on augmented reality and environmental literacy and to find out student learning outcomes after using media, students' perceptions of the media, and their environmental insight. This research is a research and development (R&D) research by following the ADDIE model. One group pre-test post-test research design was used to examine the effect of using the media. The research instruments were multiple choice test, questionnaires, and interviews which were developed independently and tested for validity & reliability. The analysis technique was the paired sample t-test and content analysis. The results of this study showed that the learning media was very eligible with a validation score reaching 88.1%. The result of the implementation of the final product of ChemiCa shows that there is an impact of using media on student learning outcomes (Sig. 0.000<0.05). Students' perception of the media are very good, learning media can increase their understanding of carbon compounds concepts, as well as their motivation to learn chemistry. This study implies that teachers can use augmented reality-based card game as a supplementary learning media to improve students’ understanding of others relevant chemistry concepts and their environment literacy.","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42164609","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

Structural, Morphological and Physical Characterization of Carbon Fly Ash 碳粉煤灰的结构、形态和物理特性

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-14 DOI: 10.17807/orbital.v15i2.18260

Ricardo Parra, C. Carvajal, J. G. Cuaspud

{"title":"Structural, Morphological and Physical Characterization of Carbon Fly Ash","authors":"Ricardo Parra, C. Carvajal, J. G. Cuaspud","doi":"10.17807/orbital.v15i2.18260","DOIUrl":"https://doi.org/10.17807/orbital.v15i2.18260","url":null,"abstract":"Carbon fly ash (CFA) is the principal industrial waste byproduct from the burning fossil fuel (coal combustion) for the thermal generation of electricity. CFA is a gray or black powdery solid that is constituted mostly metal oxides (Al, Si Fe and Ca), unburned carbon (UC) and other inorganic substance. The management of fly ash has thus been a matter of concern given the requirement of the large area of land for its disposal and potential of causing pollution of air, water, land and effects on human health. Physical and chemical characteristics of fly ash is important, as these characteristics influence its subsequent use and disposal. X-ray diffraction, and fluorescence, scanning microscopy with an energy dispersive spectroscopy, FTIR, BET was the common techniques employed to characterize FA. Characterization by XRD analysis identified the presence of quartz, mullite and sillimanite phases; while the FTIR results allowed the identification of vibrational bands, characteristic of Si-O-Si and Si-O bonds. The EDS analysis coupled to SEM allowed verifying that the composition of the samples is consistent with the results sought and that the morphological characteristics validate the proposed methodology. Surface area analyses (BET) showed that the fly ash possess an active area of 6.02 m2 · g-1. \u0000 ","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43496683","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

1,2-O-Isopropylidene-3-O-butylglucofuranose-derived Ester, and Ether: Synthesis, Characterization, and Antimicrobial Study 1,2-O-亚异丙基-3-O-丁基呋喃葡萄糖酯和醚的合成、表征和抗菌研究

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-13 DOI: 10.17807/orbital.v15i2.18152

Tasnim Rahman Anisa, M. Islam, M. Islam, M. Matin

引用次数: 0

Studies on the Optical and Photoelectric Properties of Anthocyanin and Chlorophyll as Dihybrid Sensitizer in Dye Sensitized Solar Cell (DSSC) 染料敏化太阳能电池(DSSC)中花青素和叶绿素双杂化敏化剂的光学光电特性研究

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-12 DOI: 10.17807/orbital.v15i2.17854

H. Jaafar, L. Magesvaran, N. Ameram, Arlina Ali

引用次数: 1

Green Synthesis and Anti-microbial Activities of Some Thiazole-imino Derivatives 噻唑亚胺衍生物的绿色合成及其抗菌活性

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-11 DOI: 10.17807/orbital.v15i2.17611

Satbir Singh, S. Raj, Sunil V Sharma, Sucheta, V. Yadav

引用次数: 1

Cooperation of Peripheral Hydrogen Atoms for the Stabilization of Aachno-pentaborane (11) with Small Molecules: Hydrogen Bonds and Dihydrogen Bonds 周边氢原子对Aachno-pentaborane(11)小分子稳定性的协同作用:氢键和二氢键

IF 0.6

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-07-01 DOI: 10.17807/orbital.v15i2.16800

Maryam Salehnassaj, M. Nikoorazm, A. Zabardasti, H. Goudarziafshar, B. G. Oliveira

引用次数: 0

Efektivitas Lembar Kerja Peserta Didik (LKPD) Berbasis Kearifan Lokal dengan Pendekatan STEAM pada Materi Asam Basa 基于地方酸性物质汽化的学习者工作表的有效性

Orbital: The Electronic Journal of Chemistry Pub Date : 2023-06-28 DOI: 10.19109/ojpk.v7i1.16137

Salamiyah Salamiyah, Trining P Astutik, Ardian T Wicaksono

{"title":"Efektivitas Lembar Kerja Peserta Didik (LKPD) Berbasis Kearifan Lokal dengan Pendekatan STEAM pada Materi Asam Basa","authors":"Salamiyah Salamiyah, Trining P Astutik, Ardian T Wicaksono","doi":"10.19109/ojpk.v7i1.16137","DOIUrl":"https://doi.org/10.19109/ojpk.v7i1.16137","url":null,"abstract":"Acid base material has difficulties in the concept of acid base strength and pH calculations. The test scores for acid-base material showed that 87% of the 68 students were below the KKM. Learning using LKPD based on local wisdom can make it easier for students to understand the material and improve learning outcomes. The STEAM approach can train students to apply their knowledge in making designs as a form of solving environmental problems by utilizing technology. The purpose of this study is to determine the effectiveness of LKPD. The type of research used is field research with the design used is the pretest posttest control group design. The sources in this study came from ten students of class XI IPA MAN Insan Cendekia Paser who were selected by simple random sampling. Data collection techniques, namely interviews, documentation, questionnaires and test questions, were then analyzed using the N-Gain test. The results of the study show the effectiveness of local wisdom-based LKPD with the STEAM approach in terms of learning outcomes showing an N-Gain value of 0.3 with the criteria of \"moderate\" meaning that students experience an increase in understanding. Judging from the average aspect of the affective assessment of students \"very good\" and psychomotor assessment of students \"good\". The results of research on a small scale prove that the developed LKPD is suitable for use in chemistry learning on acid-base material and can be effective in increasing students' understanding.","PeriodicalId":19680,"journal":{"name":"Orbital: The Electronic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135354391","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