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All Journal Jurnal Pendidikan Kimia Undiksha Jurnal Entropi Sainstek Alchemy : Journal of Chemistry TELKOMNIKA (Telecommunication Computing Electronics and Control) The Journal of Pure and Applied Chemistry Research QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Zarah Jurnal Penelitian Pendidikan IPA (JPPIPA) Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal Health & Science : Gorontalo Journal Health and Science Community Jambura Journal of Educational Chemistry Jambura Journal of Chemistry RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Acta Chimica Asiana Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Jurnal Pengabdian Masyarakat (ABDIRA) Indonesian Journal of Pharmaceutical Education JURNAL KIMIA SAINTEK DAN PENDIDIKAN Jurnal Pengabdian Masyarakat Farmasi : Pharmacare Society Mutiara: Multidiciplinary Scientifict Journal Obat: Jurnal Riset Ilmu Farmasi dan Kesehatan Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Journal of Pharmacology and Natural Products RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Ishak Isa
Universitas Negeri Gorontalo
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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A Review of Ethno-STEM Learning Modules in Chemical Kinetics: Bridging Cultural Relevance and Conceptual Understanding of Reaction Rates Selviana Musa; Akram La Kilo; Ishak Isa; Masrid Pikoli
Jambura Journal of Educational Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i1.33438

Abstract

This review explored how ethno-STEM learning modules help students understand reaction rates in chemical kinetics. These modules combine science with culture to make lessons more engaging and easier to relate to. We looked at how the modules were designed and used, how they supported learning, and how they mixed cultural content with science. We also compared different strategies—like inquiry learning and technology use—and identified common teaching problems.We focused on studies from secondary schools, vocational programs, and universities published up to mid-2024. These studies used different methods, such as interviews, surveys, and classroom experiments. We found that culture-based modules made chemistry more relevant and kept students motivated. Inquiry learning and technology also helped students understand reaction rates better. However, many of these strategies still need better ways to measure success and reach more students. Some students struggled with graphs and formulas, but active learning and visual tools helped improve their understanding. Teachers and students liked the modules because they connected chemistry to real life and local knowledge. Still, how engagement is measured varies between studies. In general, this review shows that ethno-STEM has strong potential to improve chemistry lessons by linking science and culture. But future research should be more consistent and explore how to use these methods in different types of classrooms.
The Effect of STEM Integrated Project Based Learning Model on Students' Collaboration Skills in Atomic Structure Padria Haleda; Ishak Isa; Haris Munandar; Nurhayati Bialangi; Julhim S Tangio; Thayban Thayban; Erga Kurniawati
Jambura Journal of Educational Chemistry Vol 7, No 2 (2025): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i2.33896

Abstract

The objective of this research is to investigate the influence of the Project-Based Learning (PjBL) model, when integrated with the STEM approach, on students’ collaborative abilities in the topic of atomic structure. The study is motivated by the persistent issue of low collaboration levels among chemistry learners, particularly when dealing with abstract subject matter. Employing a quantitative methodology with a quasi-experimental design—specifically the Non-Equivalent Control Group Design—the research was conducted with two tenth-grade classes at SMA Negeri 1 Suwawa, designating one as the experimental group and the other as the control group. Data were gathered through observation sheets that measured five aspects of collaboration: cooperation, responsibility, communication, adaptability, and compromise. The findings revealed a notable enhancement in collaborative skills within the experimental class following the application of the STEM-integrated PjBL model. The average final observation score for this group reached 76%, surpassing the control group’s 61%. The N-Gain score for the experimental group fell within the medium category (0.48), whereas the control group’s score was classified as low (0.17). Improvements were recorded across all collaboration indicators. Overall, the results suggest that the STEM-integrated PjBL model is effective in fostering collaboration skills and can be recommended as an alternative instructional approach for other chemistry topics to advance 21st-century skill development.
Analysis of Students' Differentiating, Organizing, and Attributing Skills in Solving High School Chemistry Problems: Rasch Modeling Intan Salsabila Putri Ranjani; Lukman Abdul Rauf Laliyo; Mangara Sihaloho; Ishak Isa; Julhim S. Tangio; Najmah Najmah; Thayban Thayban; Erga Kurniawati
Jambura Journal of Educational Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i1.32076

Abstract

This study aims to analyze the ability of XII grade high school students in solving C4 level chemistry problems based on three indicators (Differentiating, Organizing, and Attributing) using Rasch modeling. This research is a quantitative study with a non-experimental research design (survey). The results showed that the level of analyzing students with an overall percentage reached 44.3%. Analysis based on indicators, Differentiating ability reached 47.06% (sufficient category), Organizing was at 44.88% (sufficient category), and Attributing also reached 40.56% (sufficient category). The ability to analyze students in SMAN A had an average value of 0.94, SMAN B had an average value of 0.11, SMAN C had an average value of -0.09, SMAN D had an average value of -0.62 SMAN E had an average value of -0.96, SMAN F had an average value of -0.25, SMAN G had an average value of 0.18, SMAN H had an average value of -0.62, while SMAN I had an average value of -0.73.
INTERPRETASI DATA DERAJAT KRISTANILITAS DAN UKURAN KRISTAL KARBON AKTIF AMPAS TEBU TERAKTIVASI KOH, H3PO4, Na2S2O3, KMnO4, KSCN, FeCl3 Wiwin Kunusa; Hendrik Iyabu; Ishak Isa
Jurnal Zarah Vol. 8 No. 2 (2020): October, 2020
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v8i2.2390

Abstract

Penelitian ini mengkaji tentang pembuatan dan karakterisasi karbon aktif ampas tebu (KAAT) menggunakan metode aktivasi fisik dan aktivasi kimia. Digunakan variasi suhu karbonasi 4500C dan 6500C dan aktivator H3PO4 10%, FeCl3 10%dan KMnO4 10%. Hasil karakterisasi derajat kristanilitas dan ukuran Kristal karbon aktif menggunakan Instrumen pembacaan hasil Difragtogram XRD. Variasi aktivator dan variasi suhu dilakukan tujuannya untuk menghasilkan produk arangaktif yang memiliki permukaan spesifik, porositas, kerapatan dan ketahanan mekanis yangtinggi.Berdasarkan hasil perhitungan derajat kristalinitas sampel secara keseluruhan cenderung meningkat berdasarkan kenaikan suhu.
A Sensitivitas Antibiotik Terhadap Isolat Bakteri Dari Pemakaian Lensa Kontak Ishak isa; Mahdalena Sy. Pakaya; Faramita Hiola; Wiwit Zuriati Uno; Rahmatia Baharuddin
Journal of Pharmacology and Natural Products Vol. 3 No. 1 (2026): Volume 3, Nomor 1, Tahun 2026
Publisher : Jurnal Literasi Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70075/jpnp.v3i1.174

Abstract

Lensa Kontak Mata adalah alat bantu penglihatan yang paling banyak digunakan dibandingkan kacamata. Penggunaan lensa kontak secara tidak sengaja saat tidur dapat menyebabkan kornea kekurangan oksigen, tidak membersihkan lensa kontak dengan benar, serta penggunaan lensa kontak tanpa resep dan petunjuk dokter mata maka akan menimbulkan dampak negatif. Dampak negatif dari penggunaan lensa kontak salah satunya yaitu infeksi mata. Infeksi mata terjadi karena adanya mikroorganisme seperti bakteri yang dapat menyerang mata dan jaringan di sekitarnya. Penelitian ini bertujuan untuk mengetahui sensitivitas antibiotik terhadap isolat bakteri yang di isolasi dari lensa kontak bekas pakai. Penelitian menggunakan metode eksperimental yang dilakukan di Laboratorium Mikrobiologi Farmasi dengan menggunakan teknik purposive sampling untuk isolasi lensa kontak bekas pakai. Pengamatan morfologi secara makroskopis dan mikroskopis untuk karakterisasi, dan uji sensitivitas antibiotik Polidemisin® dan Levofloxacin® menggunakan metode difusi cakram (Kirby-Bauer). Hasil isolasi bakteri lensa kontak bekas pakai yang didapatkan dari 3 sampel isolat bakteri (LK 1, LK 2, dan LK 3). Hasil karakterisasi menunjukan karakteristik makroskopis dan mikroskopis yang berbeda dari ketiga isolat. Hasil uji sensitivitas antibiotik Polidemisin® dan Levofloxacin® menunjukkan perbedaan tingkat sensitivitas dengan persentase sensitivitas dari kedua antibiotik uji tersebut sebesar 100%.
Uji Aktivitas Antibakteri Kombinasi Ekstrak Etanol Daun Miana (Coleus atropurpureus L.) dan Daun Jambu Biji (Psidium guajava L.) terhadap Pertumbuhan Bakteri Escherichia coli Masayu Syarmila Putri Abas; La Ode Aman; Multiani S. Latif; Ishak Isa; Karunita Ika Astuti
OBAT: Jurnal Riset Ilmu Farmasi dan Kesehatan Vol. 4 No. 5 (2026): September : OBAT: Jurnal Riset Ilmu Farmasi dan Kesehatan
Publisher : Asosiasi Riset Ilmu Kesehatan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/obat.v4i5.2392

Abstract

This study aimed to determine the antibacterial activity of the combined ethanol extracts of miana leaves (Coleus scutellarioides L.) and guava leaves (Psidium guajava) against Escherichia coli and to evaluate their interaction using the CompuSyn method. This laboratory experimental study employed maceration extraction with 96% ethanol, followed by phytochemical screening, antibacterial testing using the disc diffusion method, One-Way ANOVA, and Combination Index (CI) analysis. The extraction yielded 11.11% for miana leaves and 24.92% for guava leaves. Phytochemical screening confirmed the presence of flavonoids and alkaloids in both extracts. All extract combinations inhibited E. coli growth, producing inhibition zones ranging from 8.10 to 12.75 mm, indicating moderate to strong antibacterial activity. One-Way ANOVA showed no significant differences among treatment groups (p = 0.837). CompuSyn analysis revealed that most combinations exhibited antagonistic interactions (CI > 1), whereas the combination of 10% guava extract and 20% miana extract showed synergistic effects (CI < 1) in two replicates. Overall, the combined extracts demonstrated antibacterial activity against E. coli, although most combinations did not exhibit synergistic interactions.
Co-Authors Abidin, Khoirul Abubakar Sidik Kaili Ahmad Kadir Kilo Akram La Kilo Andimala, Febriyanti Annisa Untuba Arviani Arviani Astin Lukum Astuti, Karunita Ika Balong, Sulsitiawati Bukani, Windi Doly Prima Silaban Elawati, Elawati Elvira T Haruna Endah Nurrohwinta Djuwarno Erga Kurniawati Erni Mohamad Febriyanti Andimala Fitryane Lihawa Frida Maryati Yusuf giu, fitri ani Halalutu, Hamdan Halalutu, Hamdan Haris Lukum Haris Munandar Hendri Iyabu Hendrik Iyabu Hiola, Faramita Ibrahim, Indriyanti Indriati Martha Patuti Intan Salsabila Putri Ranjani Ishak, Candrawati Jafar La Kilo Jafar La Kilo Julhim S Tangio Jusna Ahmad K Baderan Kasim, Sesha Ramadhani La Ode Aman Lanto Ningrayati Amali Latief, Suti Anggriani LATIF, MULTIANI S Lisdawati N. Umar Lukman A. R. Laliyo Mahdalena Sy Pakaya Maimun Wahab Mangara Sihaloho Mardjan Paputungan Marike Mahmud Maryam Padi Masayu Syarmila Putri Abas Masra Latjompoh Masrid Pikoli Mayawati Uno Merlin Darise Meyrin Hamzah Mohamad Adam Mustapa Mohamad Aprianto Paneo Muhamad Iksan Muhammad Taufiq Nur Muhammad Taupik Multiani S Latif Musa, Weni J.A Musa, Wenny J.A Najmah Najmah Najmah Najmah Najmah, Najmah Nento, Tia Dwi Lestari Netty Ino Ischak Nita Suleman Novianti, Rani Nur Ain Thomas Nurhayati Bialangi Ode Aman, La Openhotman, Openhotman Opir Rumape Padi, Maryam Padria Haleda Pahrun, Abdul Wahab Pakaya, Agustina H. Papeo, Dizky Ramadani Putri Rahma, Sity Wirid Rahmatia Baharuddin Rifadli Bahsuan Riskawati Pomolango Rusli Isa Rusmani Tasanif Saripa A. Laiya Selvian Idrus Selviana Musa Siti Aminah Sitti Suhada Sity Wirid Rahma Sri Andrawati Biya Sukertini, Kadek Sunarty Suly Eraku Thayban, Thayban Tiro, Lusiani La Umar, Ahmat Sudir Usman, Yuyan Ali Wenny J.A Musa Weny J.A Musa Widayanti . Wiwin Rewini Kunusa Wiwit Zuriati Uno Yuszda K Salimi Zainal, Sriyanti Zainudin, Farnawaty