Jurnal Akademika Kimia最新文献_第4页

Activation of Durian Skin Biomass with H2SO4 Activator on the Absorption of Lead from its Solution H2SO4活化剂活化榴莲皮生物质对溶液中铅的吸收

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp44-51

Fahrul Riski, I. Said, Afadil Afadil, P. Ningsih

引用次数: 0

Learning Difficulties and Students' Ability Level During Pandemic Covid-19 on The Subject of Thermochemistry 新冠肺炎大流行期间学生热化学学习困难与能力水平

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp26-31

Rizza R. T. Agustina, Afadil Afadil, Sitti Rahmawati, V. Tiwow

{"title":"Learning Difficulties and Students' Ability Level During Pandemic Covid-19 on The Subject of Thermochemistry","authors":"Rizza R. T. Agustina, Afadil Afadil, Sitti Rahmawati, V. Tiwow","doi":"10.22487/j24775185.2023.v12.i1.pp26-31","DOIUrl":"https://doi.org/10.22487/j24775185.2023.v12.i1.pp26-31","url":null,"abstract":"This study aims to identify learning difficulties learning experienced by students on the subject thermochemistry in class XI IPA SMA Negeri 8 Palu during the Covid-19 pandemic for the 2021 / 2022 school year. The instruments used in this study are thermochemistry tests, questionnaires, and interviews. The result showed students’ difficulties in the subject thermochemistry in class XI IPA was 60 %, the highest difficulty of students is found in the thermochemistry test of calculating the heat of the type of compound, calculating enthalpy changes, and formulating steps and hypotheses of an experiment. The difficulty is indicated by the low level of student comprehension of 54 %, medium 43 %, and high 3 % with an average of 30%. Furthermore, the difficulty of students in participating in chemistry learning during the Covid-19 pandemic is technical difficulties with a percentage of 65.92 %, difficulties in implementing learning with a percentage 0f 65.44 %, and external difficulties (environment and parents) with a percentage of 52.92 %. based on these results, the learning difficulties experienced by students during chemistry learning thermochemistry subjects during the Covid-19 pandemic include students often being constrained by signals and quotas to access materials on the internet and do not have student handbooks to study at home, difficulty understanding chemistry concepts because teacher explanations are elusive, students are not active in participating in learning because chemistry learning during the pandemic is not interesting, can’t afford chemistry books and quotas also parents don’t provide motivation and students are often lazy to do assignments because no one helps with doing. The result of this study indicates that the level of students' difficulties learning about thermochemistry is a quite high category with a low level of student ability and students agree that it is difficult to study chemistry during the pandemic Covid-19.","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88929671","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

Cross-Sectional Survey: The Influence of Various Teacher Backgrounds on West Kalimantan Chemistry TPACK Teachers 横断面调查:不同教师背景对西加里曼丹化学TPACK教师的影响

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp1-12

Ninda Permasari, N. Nahadi, H. Hernani

{"title":"Cross-Sectional Survey: The Influence of Various Teacher Backgrounds on West Kalimantan Chemistry TPACK Teachers","authors":"Ninda Permasari, N. Nahadi, H. Hernani","doi":"10.22487/j24775185.2023.v12.i1.pp1-12","DOIUrl":"https://doi.org/10.22487/j24775185.2023.v12.i1.pp1-12","url":null,"abstract":"This study aims to examine teachers' perceptions of their Technological Pedagogical and Content Knowledge (TPACK) about age, gender, length of teaching, work location, teacher status, teacher education, and certification programs. This study used a cross-sectional survey method used in non-experimental quantitative research. The population in this study were all chemistry teachers in West Kalimantan using a purposive sampling technique obtain 70 to respondents from 14 districts. The survey consisted of 28 statement items and distributed questionnaires via Google form to chemistry teachers. Chemistry teachers rated themselves on a 5-point scale. All domains of the TPACK framework demonstrated valid and reliable instruments on Pearson's correlation values and Cronbach's Alpha Kruskal Wallis non-parametric test, Pearson's correlation was performed to analyze the data. Significant differences can be seen in the CK domain when viewed from gender differences with a p for CK of 0.044, so there is a significant difference between the gender of women (Mean = 4.08 SD = 0.416) and men (Mean = 4.32 SD = 0.470). Location of work affects the teacher's TCK and TPACK because there is a significant difference when viewed from the p namely the TCK and TPACK of 0.036 and 0.025. Perceptions of teachers' TPACK abilities were greater for teachers in cities than in villages in both the TCK domain (Mean = 3.58; 3.82 SD = 0.430; 0.466) and TPACK (Mean = 3.63; 3.91 SD = 0.483; 0.554).","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85502377","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

Impact of the Concentration Ethylenediamine on Optical Properties of Carbon Dots from Jengkol Peel (Archinendron pauciflorum) 乙二胺浓度对柑桔果皮碳点光学性质的影响

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp20-25

A. S. Prayugo, M. Marpongahtun, S. Gea

{"title":"Impact of the Concentration Ethylenediamine on Optical Properties of Carbon Dots from Jengkol Peel (Archinendron pauciflorum)","authors":"A. S. Prayugo, M. Marpongahtun, S. Gea","doi":"10.22487/j24775185.2023.v12.i1.pp20-25","DOIUrl":"https://doi.org/10.22487/j24775185.2023.v12.i1.pp20-25","url":null,"abstract":"Carbon dots (CDs) are a new member of fluorescent nano carbons that have attracted attention because of their potential applications derived from their optical, chemical, and electrical properties. CDs from jengkol peel via the solvothermal method at 200 oC for 7 h with the addition of ethylenediamine (EDA) as a heteroatom dopant have been successfully carried out. This study aims to determine the effect of concentration EDA on the optical properties of CDs for the possible reason. The results revealed that the CDs solution has fluorescence properties; that bluish-green glow can be observed under ultraviolet radiation (365 nm). The UV - Vis absorption peaks did not depend on the CDs concentration, but the absorbance intensity decreased with increasing EDA concentration. The best fluorescence properties were possessed by 10 % EDA in CDs which produced λex/λem of 370 nm / 518 nm, respectively, with a quantum yield of 42 %. The FTIR spectra of all samples showed that the CDs surface had functional groups such as carboxylic acids, hydroxyl, and amines. The obtained CDs have the potential to be used as heavy metal ion detectors, bioimaging, and antibacterial agents.","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90287431","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

Urang Aring (Eclipta alba (L.) Hassk) Leaf Extract as Natural Dyes for Making Pomade 乌朗阿林(黄花月食)叶提取物作为润发油的天然染料

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp32-38

Sri H. V. Pulukadang, Nurlaila Triutari

{"title":"Urang Aring (Eclipta alba (L.) Hassk) Leaf Extract as Natural Dyes for Making Pomade","authors":"Sri H. V. Pulukadang, Nurlaila Triutari","doi":"10.22487/j24775185.2023.v12.i1.pp32-38","DOIUrl":"https://doi.org/10.22487/j24775185.2023.v12.i1.pp32-38","url":null,"abstract":"Dyes have an important role in the industrial sector to increase consumer interest in a product. Urang aring is a plant with color pigments that can be used as natural dyes. This study aims to utilize urang aring leaf extract as a natural hair dye for the manufacture of pomade by producing the quality of pomade preparations according to standards. The research method was carried out experimentally including: determining the water content and ash content of urang aring leaves and optimizing the time of dye extraction and storage of urang aring leaf extract using a UV - Vis spectrophotometer, then making pomade based on the formulation of urang aring leaf extract and beeswax, namely: formulation I (3:3), II (5:3), and III (10:3). Pomade quality test includes: organoleptic test, homogeneity test, pH test, freeze-thaw test, and color stability test against sunlight. Based on the results of the study, it was found that urang aring leaf extract can be used as a natural dye for the manufacture of pomade with formulation III which meets the standards in the pomade quality test because it has a soft dense texture, blackish green color, and has no odor with a pH of 6 which is ideal for hair. Pomade formulation III also has a texture that does not separate at extreme temperatures and good color stability under direct sunlight for 5 hours.","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84942465","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

Analysis of the Levels of Ethanol Extract Flavonoid Compounds in Cocor Bebek (Kalanchoe Pinnata) Leaves using UV - Vis Spectrophotometer 紫外可见分光光度法分析山茱萸叶乙醇提取物中黄酮类化合物含量

Jurnal Akademika Kimia Pub Date : 2023-02-28 DOI: 10.22487/j24775185.2023.v12.i1.pp65-70

Ulfana Tisman, S. Supriadi

引用次数: 0

APLIKASI ZAKAT, INFAK, SEDEKAH PADA BAZNAS BATANG HARI

Jurnal Akademika Kimia Pub Date : 2022-11-30 DOI: 10.53564/akademika.v15i1.841

Pariyadi, Rike Limia Budiarti, Mei Della Refpriyani

{"title":"APLIKASI ZAKAT, INFAK, SEDEKAH PADA BAZNAS BATANG HARI","authors":"Pariyadi, Rike Limia Budiarti, Mei Della Refpriyani","doi":"10.53564/akademika.v15i1.841","DOIUrl":"https://doi.org/10.53564/akademika.v15i1.841","url":null,"abstract":"Zakat is maliyah ijtima'iyyah worship which has a very important, strategic, and decisive position both in terms of Islamic teachings and in terms of developing the welfare of the people. zakat, infaq, and alms that come in, and data management carried out through Microsoft Excel will certainly take relatively longer time. In addition, the limited budget for existing funds makes BAZNAS experience problems in managing application. One solution to this problem is the creation of an application for zakat, infaq, and alms. Making this application more leverage than writing all incoming zakat, infaq, and alms data, and managing data through Microsoft Excel will certainly take relatively longer time. This financial integration system was built in four stages, namely requirements analysis, system design, implementation, and system testing with the PHP programming language framework, namely Laravel and PostgreSQL database. The features in this application are zakat calculators, payments, registrations and reports. This application provides added value, namely the management of zakat, infaq, and alms data to be faster and more accurate and is expected to help the performance of BAZNAS officers in Batanghari Regency.","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84108435","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

SISTEM INFORMASI INVENTORY BERBASIS WEB PADA CV. ESTIKA ADVERTISING 基于CV的WEB信息系统。ESTIKA广告

Jurnal Akademika Kimia Pub Date : 2022-11-30 DOI: 10.53564/akademika.v15i1.836

Windy Adriana, Pariyadi, M. A. Prammudya

引用次数: 0

MEDIA PEMBELAJARAN DALAM LANTUNAN AYAT SUCI AL-QUR’AN DENGAN PEMBAHASAN SURAH MAKKIYAH (SURAT PENDEK) PADA SD IT AL-MUTHMAINNAH 学习媒体在古兰经经文与对SD IT AL-MUTHMAINNAH的苏拉·马克耶(SURAH MAKKIYAH，短信)的讨论

Jurnal Akademika Kimia Pub Date : 2022-11-30 DOI: 10.53564/akademika.v15i1.844

J. Surya, Windy Adriana, Ulfa Riana

引用次数: 0

SISTEM PENDUKUNG KEPUTUSAN PENERIMA BANTUAN SOSIAL KELUARGA KURANG MAMPU PADA KANTOR DESA MANDIANGIN TUO MENGGUNAKAN METODE TOPSIS 曼迪扬-托村办公室的支持家庭援助决策系统采用了TOPSIS的方法

Jurnal Akademika Kimia Pub Date : 2022-11-30 DOI: 10.53564/akademika.v15i1.838

Sri Mulyati, Afrizal, Cherin Brilian Salsabila

{"title":"SISTEM PENDUKUNG KEPUTUSAN PENERIMA BANTUAN SOSIAL KELUARGA KURANG MAMPU PADA KANTOR DESA MANDIANGIN TUO MENGGUNAKAN METODE TOPSIS","authors":"Sri Mulyati, Afrizal, Cherin Brilian Salsabila","doi":"10.53564/akademika.v15i1.838","DOIUrl":"https://doi.org/10.53564/akademika.v15i1.838","url":null,"abstract":"Social assistance is assistance in the form of money, goods or services to individuals, groups, families, underprivileged communities which is carried out selectively in order to avoid social risks. The distribution of social assistance at the Mandiangin Tuo Village Office must be carried out properly, transparently, and organized so that it is given and accepted by the poor who really need it. Acceptance of this social assistance is done by selecting a list of prospective recipients according to predetermined criteria. To get the expected results, the Mandiangin Tuo Village Office requires a tool in the form of a decision support system for recipients of social assistance for underprivileged families. can be used as a guide in determining beneficiaries so that they are right on target. The method used in making this decision is TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). The Topsis method was chosen because this method determines the weight value of each attribute, then proceeds with a ranking process that will select the best alternative from a number of alternatives, in this case the alternative in question is the alternative determining recipient of social assistance for underprivileged families based on predetermined criteria. With this ranking method, it is hoped that the assessment will be more precise because it is based on predetermined criteria values so as to get more accurate results in determining the recipients of social assistance for the poor.","PeriodicalId":17695,"journal":{"name":"Jurnal Akademika Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79668398","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