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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Entropi Sainstek J-PEK (JURNAL PEMBELAJARAN KIMIA) Jurnal Kartika Kimia Jambura Journal of Food Technology Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Jurnal Ilmiah Kanderang Tingang Acta Chimica Asiana Hydrogen: Jurnal Kependidikan Kimia Damhil: Jurnal Pengabdian kepada Masyarakat
La Alio
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Social Sciences Other

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Journal : jurnal entropi

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Meningkatkan Hasil Belajar Ikatan Kimia Dengan Menerapkan Strategi Pembelajaran Peta Konsep Pada Siswa Kelas X di SMA Negeri I Telaga Ismail, Muratni; Laliyo, Lukman A.R.; Alio, La
Jurnal Entropi VOL 08, NO 01, 2013
Publisher : Jurnal Entropi

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Abstract

This research is a class action research, which has purpose to increase student's learning achievement in chemical-bond subject by using concept-mapping strategy. The sample of this research is 31 students of 10th2 Grade at SMA Negeri 1 Telaga that consist of 6 girls and 25 boys.The increase of student's learning achievement by using concept-mapping strategy can be seen from the cycle 1 as high as 80.08% to cycle 2 as high as 85.79%.Based on the result above, the treatment hypothesis "concept-mapping strategy can be used to increase student's learning achievement in chemical-bond subject" is approved.
MENINGKATKAN HASILBELAJAR SISWA KELAS XI IPA 2 MAN MODEL GORONTALO PADA MATERI HIDROLISIS GARAM DENGAN MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION (GI) Rasid, Meli A.; Bialangi, Nurhayati; Alio, La
Jurnal Entropi Vol 5, No 1, 2009
Publisher : Jurnal Entropi

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The research aimed to improve students achievement through Cooperative learning model of GI type in salt Hydrolysis lesson Material. It had done in students of 2008/2009 academic years that consisted of 20 students. Techniques in collecting data wereobservation sheet of teacher and students and test of students achievement. The research had to do second cycle,60% of students reached score less than 6,5. there it had to do second cycle. Second cycle was reparation of step and learning proses from first cycle.The result of second cycle showed that students achievement was improved to 95% and reached score standard more than 6,5. thereby, cooperative learning model of GI type in Salt Hydrolysis leason material can improve students achievement.
Identifikasi Senyawa Alkaloid Dari Ekstrak Metanol Kulit Batang Aksara, Riska; Musa, Weny J.A; Alio, La
Jurnal Entropi VOL 08, NO 01, 2013
Publisher : Jurnal Entropi

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Penelitian ini bermaksud untuk mengidentifikasi jenis alkaloid dari ekstrak kental metanol kulit batang mangga (Mangifera indica L). Sebanyak 700 gram serbuk kulit batang mangga dimaserasi dengan pelarut metanol menghasilkan maserat sebanyak 3.1 liter, kemudian di evaporasi pada suhu 40oC menghasilkan ekstrak kental sebanyak 26,89 gram. Hasil pemisahan dengan kromatografi kolom diperoleh 22 fraksi (R1-R22). Dari ke 22 fraksi, fraksi R14 dilanjutkan dengan uji kemurnian secara KLT 1 dimensi dengan berbagai eluen dan KLT 2 dimensi menghasilkan 1 noda. Isolattersebutdilanjutkan dengan uji fitokimia yang memberikan hasil positif terhadap alkaloid dan flavonoid.Terhadap isolate murni dianalisis dengan spektrometri UV-VIS dan IR. Hasil spektropotometri dari isolat menunjukkan bahwa senyawa tersebut merupakan senyawa alkaloid yang mempunyai gugus fungsi N-H (3392,56 cm-1), -CH Alifatik (2927,75 cm-1), C=O (1703,03 cm-1), C-N (1112,85 cm-1), dan N-C=O (613,33 cm-1) serta memberikan serapan pada panjang gelombang 237,5 nm hasil transisi darin * dan n *, yang diakibatkan oleh gugus C=O dan gugus N-H.
Co-Authors Ahmad Faqih Akram La Kilo Anwar, Nurhayati Ardiyanto Saleh Modjo Asisah, Asisah Astin Lukum Astin Lukum Daing, Hardianti Damayanti, Elok Deasy Natalia Botutihe Dewi Wahyuni K. Baderan Dilapanga, Windi Erga Kurniawati Fuad Pontoiyo Haris Munandar Hasim Hasim Hendri Iyabu Jafar La Kilo Julhim S Tangio Kostiawan Sukamto, Kostiawan La Ode Aman Lukman A. R. Laliyo Mahludin H. Baruwadi Manaa, Ramayanti N Mangara Sihaloho Mardjan Paputungan Masrid Pikoli Meli A. Rasid Moh Izwarto Piyohu Muratni Ismail Netty Ino Ischak Nita Suleman Nurhayati Bialangi Pahrun, Abdul Wahab Ramli Utina Rauf, Nuramna Rifki Brahmono Idrus Riska Aksara Riskah Fitriani Adam Sabora, Ririn S. Saleh, Sri Deltalia Sangkota, Vivi Dia Afrianti Shuid, Ahmad Naqib bin Supriadin, Yogi Syam, Muh Arfah Syam, Muh. Arfah Thayban, Thayban Umar, Ahmat Sudir Wahyuningrum Istiqomah Weny J.A Musa Wiwin Rewini Kunusa Yulianti Yulianti Yuszda K Salimi Zaenul Wathoni