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All Journal Jurnal Pendidikan Matematika dan IPA JURNAL ATOMIK Jurnal Chemurgy Jurnal Kedokteran Mulawarman
Daniel Tarigan
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Mathematics Medicine & Pharmacology Physics Public Health

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DEVELOPMENT OF BIOTECHNOLOGY LEARNING TOOLS BY UTILIZING THE LOCAL POTENTIAL OF CAMPEDAK SKIN TO IMPROVE THE SCIENCE PROCESSING SKILLS OF CLASS XII STUDENTS AT MA SABILARRASYAD SAMARINDA Patang, Nurfadilah A.; Masswaet, Elsje Theodora; Palenewen, Evie; Hudiyono, Yusak; Tarigan, Daniel; Susilo, susilo
Jurnal Pendidikan Matematika dan IPA Vol 15, No 2 (2024): May 2024
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v15i2.78127

Abstract

ABSTRACTThis research aimed to produce Biotechnology learning tools by utilizing the local potential of cempedak peel to improve the science process skills of class XII students and determine its validity and effectiveness. This is development research that refers to Borg Gall"™s model modified by Sugiono. The trial subjects were students of class XII at Islamic Senior High Boarding School (Madrasah Aliyah) Sabilarrasyad Samarinda. Each of the product, control and field trial subjects consists of 20 students in each class. The research results were in the form of learning tools which include: a syllabus, lesson plan (RPP), student worksheet (LKPD), and assessment instruments. The results of this research showed that the learning tools that have been developed obtained validity with an average percentage of expert assessment of about 96.2% which fulfilled the very valid criteria, and has been proven to be effectively used in learning activities. Based on the T-test results, it can be seen that school learning tools are not similar (there is a significant difference) with the class taught by the researcher using the learning tools that have been developed. Further, it can also be seen from the improvement of students' learning by about 96% and in students' science process skills by 44%.
PEMBUATAN SABUN DALAM BENTUK POLIOL DARI MINYAK BIJI KELOR (Moringa oleifera) Sihombing, Eka Putri Jayanthy; Tarigan, Daniel; Sitorus, Saibun
JURNAL ATOMIK Vol 1 No 1 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Polyol compounds obtained by epoxidation dan hydroxylation, the results obtained with the reaction yield of 69.23%. Potassium soap mixture in the form of a polyol obtained by saponification polyol with Potassium Hydroxide with a yield of 70.36%. Polyol and potassium soap in the form of a polyol mixture was analyzed by FT-IR spectrophotometer.Respectively iodine from moringa seed oil and polyol are 107.3769 mg I / gram of oil and 4.6755 mg I / gram of oil. HLB of fatty acid potassium soap of moringa seed oil and potassium soap in the form of a mixture of polyol is determined by titration method and obtained HLB of fatty acid potassium soap of moringa seed oil amounted to 5,2178 while the potassium soap in the form of a polyol mixture of 8,4767. Free alkalinity of soap potassium mixture in the form of a polyol is 0.551%. Based on the stability and strength of the foam test, the concentration of potassium soap mixture in the form polyols having the most excellent foam stability is 1% and which has the best strength is 1%.Keywords: moringa seed oil, epoxidation, polyol, saponification
Penentuan Derajat Esterifikasi Dengan Metode Base Line Pada Sintesis Aldimin Kitosan Asetat Melalui Reaksi Esterifikasi Dari Aldimin Kitosan Dengan Asetat Anhidrida Churohma, Mifta; Tarigan, Daniel; Akkas, Erwin
JURNAL ATOMIK Vol 2 No 1 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Determination degree of esterification with the baseline on the synthesis method aldimine chitosan acetate by esterification of aldimine chitosan with acetic anhydride has done. In this research, chitosan modified by chemical being aldimine chitosan acetate. Synthesis aldimine chitosan acetate produced by the esterification reaction between aldimine chitosan with acetic anhydride. The result of FT-IR analysis of aldimine chitosan acetate showed in wavenumbers 3448.72 cm-1, which indicated stretching vibration hydroxyl group -OH. Vibration absorption wave numbers 1735.93 cm-1 indicated carbonyl group C = O, ester and backed group C-O-C with wavenumbers 1033.85 cm-1. vibration absorption in wavenumbers 1651.07 cm-1 indicated the presence of C = N. Degree of esterification or degree of acetylation (DA) in aldimine chitosan acetate assign value 82.85%.
ANALISIS STATUS MUTU AIR HULU SUNGAI LAWA MENGGUNAKAN METODE INDEKS PENCEMARAN DAN STORET DI KABUPATEN KUTAI BARAT Sariyadi, Sariyadi; Hamdhani, Hamdhani; Setiawan, Yunianto; Mustakim, Mohammad; Tarigan, Daniel; Hasan, Harjuni; Sarwono, Edhi
Jurnal Chemurgy Vol 10, No 1 (2026): Jurnal Chemurgy-Juni 2026
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v10i1.26661

Abstract

Tujuan penelitian ini adalah mengkaji kualitas air di hulu Sungai Lawa, Kabupaten Kutai Barat, dengan menggunakan metode Indeks Pencemaran (IP) dan STORET. Sungai Lawa memiliki peran ekologis, sosial, dan ekonomi penting bagi masyarakat, namun dalam dua dekade terakhir menghadapi tekanan antropogenik akibat pertambangan batubara, perkebunan, dan pemukiman. Penelitian dilakukan melalui pengukuran parameter fisika, kimia, dan biologi pada tujuh titik selama dua periode.Hasil menunjukkan bahwa metode IP menempatkan mutu air pada kategori cemar ringan dengan skor rata-rata 2,298–2,499. Sebaliknya, metode STORET menghasilkan kategori tercemar sedang dengan skor rata-rata -25, bahkan pada Titik 3 dan Titik 5 masuk kategori tercemar berat. Parameter yang paling berkontribusi terhadap penurunan kualitas air adalah TSS, DO rendah, BOD dan COD tinggi, pH asam, fosfat, serta kontaminasi mikrobiologi berupa Fecal Coliform.Kesimpulan penelitian menegaskan bahwa kualitas air Hulu Sungai Lawa telah mengalami degradasi nyata. IP lebih konsisten untuk analisis tren jangka panjang, sedangkan STORET lebih sensitif terhadap variasi spasial. Penggunaan keduanya secara komplementer memberikan gambaran utuh kondisi mutu air. Strategi pengelolaan DAS berbasis data, restorasi ekosistem, pengendalian limbah, serta integrasi kearifan lokal diperlukan untuk meningkatkan kualitas air menuju kategori baik Kata Kunci: Sungai Lawa, kualitas air, Indeks Pencemaran, STORET, DAS
UJI VALIDITAS INSTRUMEN DAN STUDI PENDAHULUAN: HUBUNGAN FAKTOR PREDISPOSISI KOGNITIF DAN SIKAP TERHADAP PRAKTIK PENGGUNAAN ANTIBIOTIK BERBASIS ONE HEALTH Nuryanto, Muhammad Khairul; Saptiani, Gina; Tarigan, Daniel; Yadi, Yadi; Tandirogang, Nataniel; Sukarti, Komsanah; Sawitri, Endang
Jurnal Kedokteran Mulawarman Vol 13, No 1 (2026): Jurnal Kedokteran Mulawarman
Publisher : Fakultas Kedokteran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v13i1.28330

Abstract

Resistensi antimikroba (Antimicrobial Resistance/AMR) merupakan ancaman kesehatan lingkungan global. Mengukur dinamika perilaku komunitas secara presisi membutuhkan instrumen yang tepat. Penelitian ini bertujuan sebagai studi pendahuluan (pilot study) untuk menguji validitas instrumen kuesioner berbasis pendekatan One Health serta menganalisis korelasi awal antara faktor predisposisi kognitif dan sikap terhadap luaran praktik penggunaan antibiotik di tingkat rumah tangga. Desain studi kuantitatif belah lintang dilakukan terhadap 50 responden kepala keluarga di kawasan semiperkotaan Kota Samarinda, Indonesia pada April 2026. Analisis bivariat menggunakan Fisher’s Exact Test (α = 0,05). Hasil uji psikometri membuktikan instrumen kuesioner valid (r hitung > r tabel 0,279) dan reliabel (Cronbach's Alpha > 0,60). Hasil pemotretan awal menunjukkan mayoritas responden memiliki tingkat pengetahuan spesifik yang rendah (60% skor nol) dan terjebak dalam praktik berisiko tinggi terkait paparan antibiotik dan buruknya sanitasi (90%). Terdapat hubungan bermakna secara statistik antara pengetahuan dengan praktik berisiko (p = 0,028) serta antara sikap dengan praktik (p = 0,034). Namun, korelasi jenjang pendidikan formal umum dengan pengetahuan spesifik tidak signifikan (p = 0,762). Kesimpulannya, instrumen kuesioner yang dikembangkan terbukti handal untuk mengukur determinan perilaku AMR di kawasan sungai. Temuan awal ini mengonfirmasi adanya paradoks literasi kesehatan dan kedaruratan infrastruktur sanitasi, yang menjadi justifikasi krusial bagi pelaksanaan investigasi dan intervensi skala besar di masa mendatang.
Co-Authors Akkas, Erwin Churohma, Mifta Edhi Sarwono Endang Sawitri Gina Saptiani Hamdhani, Hamdhani Harjuni Hasan Komsanah Sukarti Masswaet, Elsje Theodora Mustakim, Mohammad Nataniel Tandirogang Nuryanto, Muhammad Khairul Patang, Nurfadilah A. Saibun Sitorus Sariyadi, Sariyadi Sihombing, Eka Putri Jayanthy Sugeng Santoso Susilo Susilo Yadi, Yadi Yunianto Setiawan, Yunianto Yusak Hudiyono, Yusak