Vol. 1 No. 1 (2021): JUNE

Articles

• Design and development of water condition measurement in soil using a capacitive based sensor

  Siti Balqis Dongoran, Juniastel Rajagukguk

  1-4

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• Antibacterial activity of Clidemia hirta leaf extract against pathogenic bacteria with variation of solvents

  Evi Rahayu, Ahmad Shafwan S Pulungan

  5-9

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• Surface science approach of MnO-CeOx(111) mixed oxide

  Elfrida Ginting

  10-20

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• Analysis of problem based learning colaborative on critical thinking ability

  Retno Dwi Suyanti, Desi Natalia Purba, Tita Juwitaningsih

  21-24

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• Analysis of dug well water imminity in Sikapas Village, Mandailing Natal District

  Riski Nainggolan, Rappel Situmorang

  25-29

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• Exploration of extraceluller enzymes-producing bacteria symbiont Sponge Phorbas sp. from Nngge Island, Sibolga

  Endang Sulistyarini Gultom, Sarah Gladies Aurelia Sijabat, Ulfayani Mayasari

  30-34

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