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All Journal Jurnal Ilmu Lingkungan Gema Pendidikan Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Jurnal Farmasi Sains dan Praktis Sains: Jurnal Kimia & Pendidikan Kimia Journal of Tropical Pharmacy and Chemistry Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo
Nurlansi Nurlansi
Chemistry Education Department, Universitas Halu Oleo, Kendari
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Health Professions Immunology & microbiology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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PERBANDINGAN MODEL PEMBELAJARAN INKUIRI TERBIMBING DENGAN INKUIRI TERSTRUKTUR TERHADAP PENINGKATAN PEMAHAMAN KONSEP REAKSI OKSIDASI-REDUKSI (REDOKS) PADA SISWA SMA NEGERI 1 KALEDUPA Yuniati Tewa; Nurlansi Nurlansi
Gema Pendidikan Vol 25, No 2 (2018): JURNAL GEMA PENDIDIKAN FKIP UHO VOLUME 25 NO.2 JULI 2018
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.417 KB) | DOI: 10.1234/gapend.v25i2.5004

Abstract

Abstrak. Penelitian ini bertujuan untuk membandingkan peningkatan pemahaman konsep redoks antara siswa yang mendapatkan pembelajaran inkuiri terbimbing dengan inkuiri terstruktur. Subyek dari penelitian ini adalah siswa kelas X MIA SMA Negeri 1 Kaledupa sebanyak  77 orang. Jenis penelitian ini adalah quasi eksperimen dengan desain pretest posttest two group design. Pengumpulan data pemahaman konsep siswa menggunakan soal pilihan ganda sebanyak 20 butir soal. Hasil analisis deskriptif menunjukkan bahwa nilai rata-rata pretest posttest dan  N-gain kelas yang menggunakan model inkuiri terbimbing secara berturut-turut adalah 32,5; 77,1 dan 0,67. Sedangkan nilai rata-rata pretest posttest  dan   N-gain kelas yang menggunakan model inkuiri terstruktur secara berturut-turut adalah 29,6; 73 dan 0,62. Selanjutnya berdasarkan hasil analisis inferensial menunjukkan bahwa terdapat perbedaan yang signifikan pada peningkatan pemahaman konsep redoks antara siswa yang menggunakan model pembelajaran inkuiri terbimbing dengan inkuiri terstruktur. Dimana pemahaman konsep siswa yang menggunakan model pembelajaran inkuiri terbimbing lebih baik dibanding siswa yang menggunakan model pembelajaran inkuiri terstruktur. Kata Kunci: Inkuiri Terbimbing, Inkuiri Terstruktur, Pemahaman Konsep, Reaksi Oksidasi-Reduksi   (Redoks)
PHYTOCHEMICALS AND RADICAL SCAVENGER ACTIVITY OF KAYU JAWA (LANNEA COROMANDELICA) AND SALAM (SYZYGIUM POLYANTHUM) LEAF STEEPING AND THE COMBINATED RATIONAL Nasrudin Nasrudin; Abraham Rahman; Nurlansi Nurlansi; Rahmanpiu Rahmanpiu; Damhuri Damhuri; Bilal Subchan Agus Santoso; Kismawati Kismawati; Jusna Jusna; Lulu Rahmatia
Jurnal Farmasi Sains dan Praktis Vol 7 No 3 (2021): Supplementary Issue (The 4th National Pharmacy Conference 2021 Universitas Halu O
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/pharmacy.v7i3.6104

Abstract

Herbal medicine as a traditional medicine based on local wisdom in the Covid 19 pandemic is the alternative for the community to keep the health of the body. Specific drugs for the cure of Covid-19 disease have also not been found yet so the death of Covid-19 patients remainsat anytime. In this case this study aims to know the content of secondary metabolite compounds and radical scavenger activity of “kayu jawa” (L. coromandelica) leaf steeping and “Salam” (S. polyanthum) leaves from Southeast Sulawesi as well as their rational combination based on the radical scavenger activity of DPPH (2,2-difenyl-1-picrilhydrazil). The analysis of the content of secondary metabolite compounds in the steeping of DKJ (Daun Kayu Jawa) and DS (Daun Salam) is applied by phytochemical method and radical scavenger activity is determined by the DPPH method. The main focus of steeping is determined by the approach of the picnometer. The combination of DKJ and DS is made each with 6 variations based on the IC50 steeping value, then converted in the form of weight (grams) of DKJ and DS powder so that 36 combinations are obtained. The result of phytochemical analysis of DKJ and DS steeping showed the presence of flavonoids, saponins and polyphenols, except tannins only exist in the steeping of DS. The radical scavenger activity of DKJ and DS steeping showed IC50 values of 408.95 ± 0.075 µg/mL and 259.05 ± 0.092 µg/mL. The combination that showed the highest DPPH radical scavenger activity of 88.050.03% occurred in the combination of E1 with a ratio of 2IC50 DK: 1/8IC50DS (1,089: 0.128) grams. DPPH radical scavenger activity approaching 50% occurs in the combination of A2 and B1 with a ratio of 1/8IC50 DKJ: ¼IC50DS (0.068:0.256) grams and ¼IC50 DKJ: 1/8IC50DS (0.136:0.128) grams with values of (49.11 0.04) % and (52.87 0.05) % respectively.
EFEKTIVITAS MODEL PROBLEM BASED LEARNING PADA MATERI LARUTAN ELEKTROLIT DAN NONELEKTROLIT Cici Indarlia; Nurlansi Nurlansi; Maysara Maysara
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol 7, No 3 (2022): Edisi Desember
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim.v7i3.28208

Abstract

Tujuan penelitian ini adalah untuk mengetahui efektivitas penggunaan model Problem Based Learning dan respon siswa pada pembelajaran Elektrolit dan Nonelektrolit. Sampel dalam penelitian ini adalah siswa kelas XIPA 3 SMAN 3 Konawe Selatan sebanyak 27 orang. Metode penelitian yang digunakan adalah Pree Eksperimen dengan desain penelitian One-group Pre-test Post-test Design. Pengumpulan data dalam penelitian ini menggunakan instrumen penelitian berupa soal pilihan ganda, lembar observasi aktivitas siswa dan guru, serta angket respon siswa terhadap proses pembelajaran. Hasil penelitian menunjukkan bahwa penggunaan model Problem Based Learning meningkatkan hasil belajar siswa dari rata-rata 28,15 menjadi 81,48 dengan efektivitas 0,76 (tinggi) dan respon siswa sebesar 78,94%.
Development of Ecotourism Scenario Based on Seawater Quality Evaluation La Harudu; La Ode Nursalam; Nurlansi Nurlansi; Agus Sugiarto; Ahmad Tarmizi Abdul Karim; Fahrudi Ahwan Ikhsan; Andri Estining Sejati; Masri Ridwan; Liyushiana Liyushiana; Feri Fadlin
Jurnal Ilmu Lingkungan Vol 22, No 5 (2024): September 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.5.1377-1387

Abstract

There were various activities in the Bungkutoko Island Kali Biru Bathing area by PT. Pelindo Nusantara and community settlements can unwittingly impact the quality of the water environment. This study aimed to determine the quality of seawater in the Kali Biru bathing area and develop a sustainable tourism-based environmental engineering concept. This research method uses surveys and laboratory analysis. Examination of water samples is carried out directly. Seawater analysis is descriptive with quality data from the results of water quality tests in testing laboratories whose feasibility levels were determined based on Indonesia's government rule number 22 of 2012. The results showed that three elements had laboratory test values exceeding the threshold value, namely: nitrite (NO2-N), sulfate (SO4), and iron (Fe), which should not be present, but during the study, there were already values for nitrite (NO2-N) of 0.12, 0.006, and 0.0006, sulfate (SO4) of 2.3, 1.4, and 4.8 and iron (Fe) of 0.0012, 0.0019, and 0.001 while the other six elements starting from pH (degree of acidity), salinity (%), nitrate (NO3-N), oil and grease, arsenic (As), and total coliform were within the regional quality threshold sea tourism. Scenarios for developing tourism activities through ecotourism activities.
Uji Aktivitas Antioksidan dari Daun Kelor (Moringa oleifera) yang Diekstraksi Menggunakan Teknik Soxhletasi Siti Nurjanah; Haeruddin; Nurlansi
Sains: Jurnal Kimia dan Pendidikan Kimia Vol. 11 No. 2 (2022): EDISI DESEMBER 2022
Publisher : Jurusan Pendidikan Kimia FKIP Universitas Halu Oleo, Jl. HEA. Mokodompit Kampus Hijau Bumi Tridharma Andounohu Kendari, Gedung MIPA FKIP UHO Sulawesi Tenggara – Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Antioxidant Activity Tests of Moringa (Moringa oleifera) leaves which Extracted Using Soxhletation Technique has been carried out. This research aims to determine what types of secondary metabolites are contained in Moringa leaves using soxhletation technique and the antioxidant activity of Moringa leaves extracted using soxhletation technique. The secondary metabolites contained in the methanol extract of Moringa leaves were determined by the phytochemical method, while the antioxidant activity was tested by the DPPH method. Moringa leaves used are dried Moringa leaves which have been mashed. Total of 150 g of Moringa leaves were soxhelated for 7 hours with methanol as solvent. Then the extracts were collected and concentrated to obtain a thick extract of 30.624 g. The extracts were tested for phytochemicals and antioxidants. Phytochemical test results showed that the methanol extract of Moringa leaves extracted using the soxhletation technique contained alkaloids, flavonoids, steroids, Polifenols and saponins. Moringa leaves methanol extract extracted using the soxhletation technique has very weak antioxidant activity with an IC50 value of 857.6894 ppm.
Activity of Tokulo (Kleinhovia hospita L.) as Anti Rheumatoid Arthritis and Anti-inflammatory in White Rats Induced by Complete Freud Adjuvant (CFA) Fatma Sari Siharis; Selpirahmawati Saranani; Nurlansi Nurlansi
Journal of Tropical Pharmacy and Chemistry Vol. 5 No. 3 (2021): J. Trop. Pharm. Chem.
Publisher : Faculty of Pharmacy, Universitas Mulawarman, Samarinda, Indonesia, 75117, Gedung Administrasi Fakultas Farmasi Jl. Penajam, Kampus UNMUL Gunung Kelua, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25026/jtpc.v5i3.299

Abstract

Tokulo (Kleinhovia hospita) leaves are commonly used by Moronene people (Southeast Sulawesi) to treat headaches. This is supported scientifically from research which states that tokulo leaves have analgesic and anti-inflammatory activity. The NSAID group is included in the anti-rheumatoid arthritis therapy. To determine the anti-RA activity of this plant, a study was carried out on CFA-induced rats. Based on the results of the study, it is known that the ethanol extract of tokulo leaves has anti-RA and anti-inflammatory activity in CFA-induced rats. Keywords: Kleinhovia hospita, Rheumatoid Arthritis, Inflammation
Penerapan Peningkatan Hasil belajara Siswa Menggunakan Model Pembelajaran Discovery Learning dengan menerapkan Physics Education Technology (PhET) Berbasis Android Nur Rahmah; Dahlan Dyru; Nurlansi
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol. 8 No. 3 (2023): Desember 2023
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

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Abstract

The use of Physics Education Technology (PhET) learning media in the Discovery Learning model, especially in chemistry learning at school, has not been widely implemented by teachers because they do not yet know how PheT is useful in learning. The aim of this research is to determine student learning outcomes with the application of Physics Education Technology (PhET) in the Discovery Learning model on acid-base material and the effectiveness of chemistry learning. The research method used was quasi-experimental with a Pre-test Post test Control Group Design. Data collection techniques were carried out by providing research instruments in the form of essay questions and observation sheets. The results showed that learning chemistry taught by applying Physics Education Technology (PhET) in the Discovery Learning learning model was higher with an average post-test score of 81.23 while the chemistry learning outcomes of students taught by Discovery Learning learning model were lower with an average score the post-test average was only 60.03, and the application of Physics Education Technology (PhET) was quite effective in increasing learning outcomes as indicated by the N-gain of 0.79 which was included in the high category
Co-Authors Abraham Rahman Agus Sugiarto Ahmad Tarmizi Abdul Karim Andri Estining Sejati Bilal Subchan Agus Santoso Cici Indarlia Dahlan Dyru Damhuri Damhuri Fahrudi Ahwan Ikhsan Fatma Sari Siharis Feri Fadlin Haeruddin, Karnila Jusna Jusna Kismawati Kismawati La Harudu La Ode Nursalam Liyushiana, Liyushiana Lulu Rahmatia Masri Ridwan, Masri Maysara Maysara Nasrudin Nasrudin Nur Rahmah Rahmanpiu . Selpirahmawati Saranani Siti Nurjanah Yuniati Tewa