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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Pendidikan Kimia Indonesia Jurnal Entropi Biology, Medicine, & Natural Product Chemistry Jurnal Tadris Kimiya Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research AR-RAZI Jurnal Ilmiah Jurnal Kartika Kimia Jambura Journal of Educational Chemistry Jambura Journal of Chemistry JCER (Journal of Chemistry Education Research) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Acta Chimica Asiana Hydrogen: Jurnal Kependidikan Kimia Indonesian Journal of Pharmaceutical Education Indonesian Journal of Chemistry and Environment JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Manusia dan Lingkungan Molekul: Jurnal Ilmiah Kimia International Journal of Technology and Education Research International Journal of Education, Vocational and Social Science Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Jurnal Sains dan Kesehatan Damhil: Jurnal Pengabdian kepada Masyarakat Jurnal Pendidikan Kimia, Fisika dan Biologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Akram La Kilo
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Investigating Pt/Pumice catalyst for efficient 3-methyl-1-butanol conversion Paputungan, Mardjan; La Kilo, Akram
Acta Chimica Asiana Vol. 7 No. 2 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i2.162

Abstract

The objective of this study was to obtain a modified Pt/pumice catalyst to support the conversion reaction of 3-methyl-1-butanol under specific reaction conditions. To achieve this objective, the first step involved preparing modified pumice catalyst pellets by impregnating them with Pt metal followed by activation at a temperature of 500 °C. The second step involved characterizing the Pt/pumice catalyst, including the surface distribution of Pt metal using SEM. The third step involved conducting the catalyst activity test against 3-methyl-1-butanol in a reactor (furnace) at temperatures ranging from 400 to 500°C with a flow system for the feed. The fourth step involved analyzing the conversion results using GC-MS chromatograms. The research results showed that the Si/Al ratio in the modified Pt/Pumice catalyst using a PtCl4 solution with a concentration of 0.0321 M for impregnation was 4:1, compared to 4.8:1 for Pt/Zeolite and 3.2:1 for Pt/ABP. The modified catalyst activity test for 3-methyl-1-butanol showed the following conversion results: Pt/Pumice 27.63%, Pt/Zeolite 23.85%, Pt/Black Pumice 14.81%, and for platinum catalyst, the conversion was 22.35%. These results indicated that the highest conversion was observed in the treated sample A-3 under the reaction condition of 450°C. The conversion products analyzed using GC-MS showed the presence of three molecules: 3-methylbutanal, 2-methylbutanal, and anhydrous isobutanoate.
ANALYSIS OF HAZARDOUS COMPOUNDS IN REFILLABLE ROLL-ON PERFUMES CIRCULATING IN GORONTALO CITY USING GC-MS Ibrahim, Indriyanti; Isa, Ishak; Rumape, Opir; Aman, La Ode; Kunusa, Wiwin Rewini; Kilo, Jafar La; La Kilo, Akram
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v8i1.5101

Abstract

This study aims to analyze the potentially hazardous compounds in refillable roll-on perfumes. The analytical method employed was GC-MS. The results from GC-MS analysis revealed hazardous compounds including Alpha-Pinene with concentrations in samples A-E = 0.0048 ppm, 0.0035 ppm, 0.0105 ppm, 0.0038 ppm, 0.0034 ppm; Dipropylene glycol with concentrations in samples A-E = 0.0322 ppm, 0.0162 ppm, 0.0692 ppm, 0.0493 ppm, 0.0465 ppm; Limonene with concentrations in samples A-E = 0.0705 ppm, 0.0373 ppm, 0.0222 ppm, 0.1462 ppm; Linalool with concentrations in samples A-E = 0.0092 ppm, 0.0568 ppm, 0.0146 ppm, 0.1298 ppm, 0.1233 ppm; Linalyl Acetate with concentrations in samples A-E = 0.1207 ppm, 0.0719 ppm, 0.0413 ppm, 0.1418 ppm, 0.1285 ppm. The levels of these compounds in the samples are below exposure thresholds, suggesting their current use is considered safe. However, stringent government oversight is necessary for refillable perfume products available in Gorontalo City.
Analisis Kemampuan Berargumentasi Ilmiah Siswa Kelas XI di SMA Negeri 1 Telaga pada Materi Larutan Elektrolit dan Nonelektrolit Regina Olii; Lukman Abdul Rauf Laliyo; Ahmad Kadir Kilo; Akram La Kilo; Julhim S. Tangio; Erga Kurniawati
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 3 No. 1 (2025): Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v3i1.361

Abstract

This study aims to assess the scientific argumentation skills of eleventh grade students at SMA Negeri 1 Telaga on the topic of electrolyte and nonelectrolyte solutions. The study employs a descriptive qualitative approach. The data collection method utilized a multiple-choice test with five indicators of scientific argumentatio, comprising 25 questions. The sample comprises 132 students from the eleventh grade at SMA Negeri 1 Telaga. The results reveal that students’ scientific argumentation skills on the topic of electrolyte and nonelectrolyte solutions are categorized as fair, with a claim level of 48,4%, data level of 53%, warrant level of 50,6%, backing level of 44,4%, and rebuttal level of 44,3%. It can be concluded that while students’ argumentation skills are aduwuate, many students still struggle to present a complete argumentation using all indicators. The active participation of both students and teachers during lessons is crucial to improving students’ scientific argumentation abilities, particularly in overcoming misconceptions related to electrolyte and nonelectrolyte solutions.
In Silico Study of the Potential of Moringa oleifera Secondary Metabolites as α-Glucosidase Inhibitors Bumulo, Nuraini; Aman, La Ode; Kilo, Jafar La; La Kilo, Akram; Salimi, Yuszda K.; Arviani, Arviani
Indonesian Journal of Pharmaceutical Education Vol 5, No 1 (2025): January–April 2025
Publisher : Jurusan Farmasi Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37311/ijpe.v5i1.28749

Abstract

This study aims to evaluate the potential of Moringa oleifera secondary metabolites as inhibitors of the α-glucosidase enzyme using an in silico approach. The study employed molecular docking methods. The structure of the α-glucosidase enzyme was obtained from the Protein Data Bank (PDB ID: 3TOP), while the structures of Moringa oleifera secondary metabolites were sourced from the literature. Docking simulations were conducted using AutoDock Vina, and interaction results were analyzed using Discovery Studio. The analyzed parameters included binding affinity values and the interactions between ligands and active site residues of the enzyme. The results showed that several secondary metabolites of Moringa oleifera, such as lutein and 4-(α-L-rhamnopyranosyloxy)benzyl glucosinolate, exhibited strong binding affinity values: -10.93 kcal/mol for lutein and -10.27 kcal/mol for 4-(α-L-rhamnopyranosyloxy)benzyl glucosinolate. Benzyl glucosinolate enhanced the stability of the ligand-protein complex, demonstrating its potential as a more effective α-glucosidase inhibitor compared to acarbose, the currently used antidiabetic drug. Based on molecular docking analysis, the secondary metabolites of Moringa oleifera indicate great potential for further development as antidiabetic agents.
Diseminasi Modul Ajar Pembelajaran Berdeferensiasi berbasis STEM di SMA Asparaga Gorontalo Tahir, Wawan; La Kilo, Akram; Salimi, Yuszda K.; Laliyo, Lukman A.R.
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 3, No 2: December 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v3i2.30662

Abstract

DISSEMINATION OF STEM-BASED DIFFERENTIATED TEACHING MODULE AT ASPARAGA SENIOR HIGH SCHOOL IN GORONTALO. This study disseminates differentiated STEM teaching modules at Asparaga Seniro High School, Gorontalo, to equip teachers with more inclusive and adaptive teaching strategies. The methods used in this activity include training, mentoring, and evaluation based on surveys and direct observations. The results of the activity indicate an improvement in teachers' understanding of STEM and differentiation concepts, as well as their success in designing and implementing teaching modules tailored to students' needs. The evaluation also reveals that the application of ethno-STEM, which integrates local culture into STEM learning, enhances student engagement and makes learning more contextual and meaningful. Thus, the dissemination of this differentiated STEM-based teaching module contributes to the transformation of learning into a more innovative and relevant approach that meets the needs of 21st-century education.
STUDI PENGARUH VARIASI PH DAN KOLEKTOR PADA EFISIENSI FLOTASI MINERAL TEMBAGA SULFIDA Sukamto, Kostiawan; Lukum, Astin; La Kilo, Akram
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 1 (2025): Publikasi Penelitian Kimia dan Terapannya 2025
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i1.5152

Abstract

This study aims to investigate the effect of pH variations and collector types on the recovery efficiency and Cu content in copper sulfide mineral samples. The experiment was conducted by varying the pH (6, 8, 10, and 12) and using different types of collectors, namely Xanthate, Potassium Amyl Xanthate (PAX), Diethyl Dithiophosphate (DTP), and a combination of PAX + DTP. Control variables included flotation time (5, 10, 15, 20, and 25 minutes), collector concentration at 50 mg/L, particle size <75 µm, and the use of Frother Methyl Isobutyl Carbinol (MIBC) at a concentration of 10 mg/L. Modifiers such as NaOH and H₂SO₄ were used to adjust the pH, while Copper Sulfate (CuSO₄) served as an activator and Sodium Metabisulfite (Na₂S₂O₅) as a depressant. The results showed that variations in pH and collector types significantly influenced recovery efficiency and Cu content in the concentrate. In general, the highest recovery efficiency was achieved at pH 10 with the combination of PAX + DTP, which resulted in a higher Cu content compared to other single collectors. This combination was able to improve recovery efficiency to over 75%, with Cu content in the concentrate reaching 28%. Therefore, the findings suggest the use of a collector combination and pH optimization as strategies to enhance the performance of copper sulfide flotation.
Evaluating Differentiated Chemistry Instruction in Senior High Schools Using Stake’s Countenance Model: A Study in Gorontalo City Suryanto, Suryanto; Lukum, Astin; Salimi, Yuszda K.; La Kilo, Akram; Laliyo, Lukman A.R.; Pikoli, Masrid
Jambura Journal of Educational Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i1.31729

Abstract

This study aims to evaluate the implementation of differentiated instruction in Chemistry subject for Grade 10 students across senior high schools in Gorontalo City using Stake’s Countenance Model. The evaluation focused on three key components: antecedent (lesson planning), transaction (instructional implementation), and outcome (student learning results). Data were collected through the analysis of lesson plans and teaching modules, classroom observations, teacher interviews, and assessments of student learning outcomes. The analysis employed both congruence and contingency approaches. The findings indicate that both lesson planning and instructional implementation fall into the "moderate" category, with average scores of 69.82% and 67.52%, respectively, while student learning outcomes were categorized as "good" with an average score of 68.89%. The contingency analysis revealed a misalignment between antecedent and transaction with the outcome, suggesting that student achievement was more strongly influenced by administrative targets (KKTP) rather than the effectiveness of differentiated instruction strategies. This study recommends the need for pedagogical training focused on strengthening conceptual understanding of differentiation, designing adaptive instructional materials, and applying authentic assessment practices to promote inclusive and responsive learning tailored to diverse student needs.
Validitas Media Pembelajaran Kimia Berbasis Augmented Reality (AR) Menggunakan Assemblr Edu pada Materi Hidrokarbon Fatma Tahir; Astin Lukum; Masrid Pikoli; Lukman A.R. Laliyo; Akram La Kilo; Erga Kurniawati
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.319

Abstract

This study aims to determine the level of validity of Augmented Reality (AR)-based chemistry learning media using the Assemblr Edu platform on hydrocarbon material. This learning media was developed through the 4D development model (Define, Design, Develop, Disseminate). Validation was carried out by three experts using an instrument in the form of a validation media sheet that includes aspects of content, visual appearance, interactivity, and suitability with learning objectives. The validation results showed that the developed learning media obtained a validity score of 96.39% and was included in the "very valid" category. This shows that the media is suitable for use in the chemistry learning process at the high school level, especially on the topic of hydrocarbons. With AR technology, this media is expected to improve students' conceptual understanding visually and interactively. Based on the results of the study, it can be concluded that this media is effective and valid as a means of supporting innovative modern chemistry learning.
Pengaruh Pemberian Pupuk Kompos Ampas Kelapa dan Air Laut terhadap Pertumbuhan Tanaman Selada (Lactuca Sativa L.) Nur Fadillah Pulukadang; Akram La Kilo; La Ode Aman; Astin Lukum; Erni Mohamad
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.332

Abstract

This study aims to determine the effect of coconut pulp and seawater compost on the growth of lettuce (Lactuca Sativa L). This type of research uses a quantitative method. Based on the results of the study, the treatment of coconut pulp and seawater compost on the most optimal plant height is the treatment on the 28th day because there is the greatest potential difference in treatment compared to other days and the treatment of coconut pulp and seawater compost on the optimal number of leaves is the treatment on the 42nd day, especially in treatment 5 which produces the highest number of leaves.
Edukasi Pemurnian Logam Tembaga melalui Elektrolisis untuk Siswa SMA Terpadu Wira Bhakti Gorontalo Sukamto, Kostiawan; Lukum, Astin; La Kilo, Akram; Kunusa, Wiwin Rewini
Damhil: Jurnal Pengabdian kepada Masyarakat Vol 4, No 1: June 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/damhil.v4i1.33074

Abstract

This community service activity aims to provide students at SMA Terpadu Wira Bhakti Gorontalo with an understanding of the copper purification process through electrolysis and the application of environmentally friendly technology in the metallurgy industry. The activity was carried out using a combined approach of theoretical instruction and direct laboratory practicum. Students learned the basic principles of electrolysis, the mechanism of copper purification, and how this technology reduces environmental impact compared to traditional methods. During the practicum, students had the opportunity to apply the theory they had learned, observe the electrolysis process, and understand the results of copper purification. The evaluation results indicate that the activity was effective in enhancing students' understanding of electrolysis and the importance of sustainable technology in the industry. Additionally, the activity successfully sparked students' interest in the field of engineering and environmentally friendly industries.
Co-Authors Abas, Ramona Nintias R. Ahmad Kadir Kilo Alberto Costanzo Alberto Costanzo Ambarwati Ambarwati Anita Muhammad Apriani Katili, Yeyen Arsyad, Muhammad Arif M. Arviani Arviani Asisah, Asisah Astin Lukum Bait, Dewimuliawati J. Bambang Prijamboedi Botutihe, Deasy N. Bumulo, Nuraini Christopel, Nelpiani Christopel, Nelpiani D. Mazza D. Mazza, D. Daing, Hardianti Dandi Saputra Halidi Daniele Mazza Daniele Mazza Deasy N Botutihe Deasy Natalia Botutihe Dewi Budi Purwati Dilapanga, Windi Djafar, Yuliyanti Wahab Eka Anggraini Odja Erga Kurniawati Erni Mohamad Fatma Tahir Gonibala, Alfikry Hadis, Sutra S Hendri Iyabu Hendri Iyabu Hidanurhayati, Hidanurhayati Ibrahim, Indriyanti Ika Riyana Tungkagi Ishak Isa Ismunandar Ismunandar Jafar La Kilo Julhim S Tangio Julhim S. Tangio K. Salimi, Yuszda Kadir Kilo, Ahmad Kadir, Ahmad Kamumu, Isal Kostiawan Sukamto, Kostiawan Kupang, Sri Revayana Kusrini Kusrini La Alio La Alio La Ode Aman Lukman A. R. Laliyo Lukman A.R. Laliyo Maksum, M. Junaidi Mangara Sihaloho Mardjan Paputungan Masrid Pikoli Mian Kau Monoarfa, Zunarti P Muhamad Abdulkadir Martoprawiro Muhammad Taufiq Nur Musa, Selviana Musa, Weny J.A. Najah, Adilla Syahsiyatun Nelpiani Christopel Netty Ino Ischak Netty Ino Ischak Nita Suleman Nur Fadillah Pulukadang Nurhayati Bialangi Opir Rumape Pahrun, Abdul Wahab Patilima, Rusmiyati Ramona Nintias R. Abas Regina Olii Reski Rahmatia Idris Rusmiyati Patilima S. Gani, Melinda Sabihi, Ismail Saleh, Sri Deltalia Salman, Lismawati Saprini Hamdiani Sarmini A Iladat Siti Romla Maspeke Sri Wanti Sappe Subawa, Kadek Suleman Duengo Suryanto Suryanto Tahir, Wawan Triwahyuni S. Umamah Umar, Ahmat Sudir Weny J.A. Musa Weny J.A. Musa Wiwin Rewini Kunusa Wiwiyani, Wiwiyani Yahyu Tanaiyo Yuszda K Salimi Zaenul Wathoni