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All Journal Jurnal Kimia Mulawarman JURNAL ATOMIK AKM: Aksi Kepada Masyarakat
Rahmat Gunawan
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Education Energy Environmental Science Social Sciences Other

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PENGARUH VARIASI RASIO Si/Al STRUKTUR ZEOLIT A DAN VARIASI KATION (Li+, Na+, K+) TERHADAP PERUBAHAN UKURAN WINDOW ZEOLIT A MENGGUNAKAN METODE MEKANIKA MOLEKULER Maria Amelia Kristianingrum; Rahmat Gunawan; Rudi Kartika
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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The structure modeling of zeolite A using calculation of molecular mechanics methods with variation of Si/Al ratio ( 1; 1,18; 1,4; 1,66 and 2) and variation of cations (Li+, Na+, K+) has been investigated. The result shows that the structure of zeolit A with the ratio of Si/Al = 2, has the most stable structure with a minimum energy 1757,1420 kcal/mol. The most stable zeolite A structure impregnated with cations are determined from the lowest energy which is 1686,8383 kcal/mol for the structure with K+ cation. In addition result shows that the structure with Li+ cation has the largest window diameter, thus affecting the window size of the zeolite A structure of which potentially has the best adsorbent capacity.
SCREENING BAKTERI PENGHASIL AMILASE DARI SEDIMEN SUMBER AIR PANAS DONDANG MUARA JAWA M Nur Yasin Fahrul Fhozi; Winni Astuti; Rahmat Gunawan
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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The screening of amylase enzyme producing thermophilic bacteria from sediment of hot spring in Muara Jawa has been done. Screening has done by using selective media of starch, will show the formation of clear zones around the colonies by dripping the iodine solution. From alot colonies selected 1 colony with widest clear zone. Single colony obtained was identified as Bacillus sp. Amylase produced was tested for amylase activity by DNS method and obtained the amylase activity at pH 6 and temperature at 55°C is 2,8460 U/mL.
Pelatihan Penggunaan Kit Detektif Kimia dalam Pembelajaran Kimia Bagi Guru-Guru SMA, MA dan SMK di Kalimantan Timur RR Dirgarini Julia Nurlianti Subagyono; Veliyana Londong Allo; Husna Syaima; Moh Syaiful Arif; Irfan Ashari Hiyahara; Nanang Tri Widodo; Rahmat Gunawan
AKM Vol 4 No 2 (2024): AKM : Aksi Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat - Januari 2024
Publisher : Sekolah Tinggi Ekonomi dan Bisnis Syariah (STEBIS) Indo Global Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36908/akm.v4i2.977

Abstract

Penggunaan media pembelajaran yang tepat dapat membantu guru kimia dalam menjelaskan konsep dan teori dalam ilmu kimia yang seringkali bersifat abstrak. Tim Qmiaku, Jurusan Kimia, FMIPA, Universitas Mulawarman mengembangkan Kit Detektif Kimia sebagai media pembelajaran baru, di mana siswa bermain peran sebagai detektif kimia. Pelatihan penggunaan Kit Detektif Kimia selanjutnya dilakukan dengan melibatkan mitra guru kimia di SMA, MA, dan SMK di Provinsi Kalimantan Timur. Kegiatan pengabdian masyarakat ini diberikan dengan metode pengenalan media pembelajaran, serta pelatihan dan pendampingan guru dalam menggunakan enam set percobaan pada Kit Detektif Kimia dengan materi asam basa, metode pemisahan sederhana, koloid, larutan dan suspensi, reaksi kimia, korosi, dan analisis kandungan bahan makanan sederhana. Berdasarkan hasil wawancara dan kuisioner yang diberikan, pelatihan ini mampu meningkatkan pemahaman dan kemampuan para guru dalam penggunaan Kit Detektif Kimia melalui penyampaian materi, diskusi/tanya jawab panduan penggunaan media yang mudah dipahami, dan pendampingan dari fasilitator pada praktik penggunaan media pembelajaran.
Co-Authors Allo, Veliyana Londong Husna Syaima Irfan Ashari Hiyahara M Nur Yasin Fahrul Fhozi Maria Amelia Kristianingrum Moh Syaiful Arif Nanang Tri Widodo RR Dirgarini Julia Nurlianti Subagyono Rudi Kartika, Rudi Winni Astuti