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PURIFIKASI MINYAK GORENG BEKAS DENGAN PROSES ADSORBSI MENGGUNAKAN ARANG KULIT KACANG TANAH (ARACHIS HYPOGAEA L.) Mardiana Mardiana; Tri Santoso
Media Eksakta Vol 16 No 1 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.12 KB) | DOI: 10.22487/me.v16i1.733

Abstract

Absorbents have been widely used in purification of used cooking oil to improve the oil quality. This study aimed to determine the quality of used cooking oil after adsorbed using activated charcoal from peanut shells based on the best purification time in accordance with SNI 01-3741-1995. Oil quality parameters used are color, free fatty acid content, peroxide number, iodine number, water content, and oil density. The best results were obtained at 120 minutes purification time with an absorbance value of 0.023 A, free fatty acid content of 0.22%, peroxide number of 1.83 meq/kg, iodine number of 43.40, moisture content of 0.19% and oil density of 0.924 g/mL Only iodine number and oil density from the six parametersthat have not yet met the SNI cooking oil quality requirements.
PEMANFAATAN PEKTIN KULIT NANGKA (ARTOCARPUS HETEROPHYLLUS) SEBAGAI ADSORBEN LOGAM CU (II) Khusnul Khotima; Tri Santoso
Media Eksakta Vol 16 No 2 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.915 KB) | DOI: 10.22487/me.v16i2.741

Abstract

One method to reduce levels of heavy metals from the waters is adsorption method by utilizing organic waste such as jackfruit peels. This research aims to utilize jackfruit peels pectin (Artocarpus Heterophyllus) as Cu (II) metal adsorbent the first  to extract with 5% citric acid solvent for 120 minutes and characterize  pectin from jackfruit peels as well measure the optimum contact time required pectin  to adsorb Cu (II) metal with variations in time for 1, 2, 3 hours. The results showed the characterization pectin from jackfruit peels obtained was a yield of 9.9%, ash content 4.04%, moisture content 8%, equivalent weight 641.026 mg, methoxyl content 6.82%, galacturonic acid 45.76%, and the optimum contact time required pectin  to adsorb Cu (II) metal, which is 2 hours with the precentage of absorption is 82,80%.
Analisis Hubungan Kemandirian Belajar Dan Sikap Kreatif Siswa Terhadap Hasil Belajar Dalam Pembelajaran Kimia Kelas X Di SMA Negeri 6 Palu Alifta Alifta; Tri Santoso; Dewi Satria Ahmar; Magfirah Magfirah
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.128 KB) | DOI: 10.22487/me.v18i1.1337

Abstract

This study aims to describe the description of learning independence, students' creative attitudes, and the relationship between learning independence and students' creative attitudes towards learning outcomes in class X chemistry learning at SMA Negeri 6 Palu. This research was conducted from April to June 2021. The research method used was descriptive research.  The sampling technique is purposive sampling.  The population in this study were all students of class X with a total of 90 students, the samples used were students of class X IPA 2 SMA Negeri 6 Palu in the academic year 2020/2021 as many as 30 students.  The research instrument used in this study was a learning independence questionnaire and a creative attitude questionnaire compiled using a Likert scale, and using MID learning outcomes in semester 2 of chemistry class X IPA 2. Based on the results of the study, there were 3 categories of descriptions of independent learning and creative attitudes  students are high, medium and low. The results of the calculation of the correlation coefficient between learning independence and student learning outcomes are low (rcount) 0.260. The relationship between creative attitudes towards student learning outcomes is moderate (rcount) 0.457 at the moderate level.  Based on these data, it can be concluded that the creative attitude of students to support learning success is more positive than student learning independence.  The results of this study are expected to be a source of information regarding the relationship between learning independence and students' creative attitudes towards learning outcomes
Pelatihan Pemanfaatan Reference Management Software Zotero Untuk Mendukung Pengelolaan Dokumen Ilmiah Mahasiswa Dewi Satria Ahmar; Magfirah; Tri Santoso; Sri Hastuti Virgianti Pulukadang; Muhammad Fath Azzajjad; Ayu Rahayu; Edi Ilimu; Agus Nasir; Ansari Saleh Ahmar
Panrannuangku Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2023)
Publisher : Lembaga Penelitian dan Pengembangan Teknologi dan Rekayasa, Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/panrannuangku1762

Abstract

Kegiatan pengabdian kepada masyarakat (PkM) ini dilaksanakan pada Program Studi S-1 Pendidikan Kimia, Universitas Sembilanbelas November kolaka. Kegiatan PkM dilaksanakkan dengan mempertimbangkan hasil analisis situasi dan kebutuhan mahasiswa akan pemanfaatan reference management software Zotero untuk mendukung pengelolaan dokumen ilmiah mahasiswa. Pelatihan memiliki langkah-langkah: perencanaan, pelaksanaan dan evaluasi. Metode yang digunakan pada pelatihan adalah diskusi, Latihan/praktek dan simulasi melalui online learning. Peserta pelatihan terdiri dari 34 orang mahasiswa. Luaran yang diperoleh adalah 100% peserta telah mengetahui reference Management Software dalam pengelolaan dokumen ilmiah, 85.29% peserta telah mampu mengoperasikan reference management software Zotero dan 94.12 % peserta telah memiliki apllikasi reference management software Zotero.
Investigation of Problem-Based Learning (PBL) on Physics Education Technology (PhET) Simulation in Improving Student Learning Outcomes in Acid-Base Material Aceng Haetami; Nina Zulvita; Dahlan; Maysara; M. Alim Marhadi; Tri Santoso
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 11 (2023): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i11.4820

Abstract

This study aimed to ascertain how well the problem-based learning model and physics education technology (PhET) simulation improved student learning outcomes in acid-base materials. The research method used was a quasi-experiment with a non-equivalent control group design. Data collection techniques were used in this study by providing test instruments in the form of multiple-choice questions, pretests and posttests, and observation sheets of teacher and student activities. The findings revealed that students taught using the PBL model with PhET simulation achieved an average learning outcome score of 79.29, while those taught using the PBL model alone obtained an average score of 73.97. The calculated average N-gain of 0.70 (categorized as medium) indicates that the PBL model with PhET simulation significantly contributed to enhancing student learning outcomes. This study demonstrates that integrating the PBL model with PhET simulation is an effective approach for improving student learning outcomes in the context of acid-base materials. The results highlight the importance of experiential, inquiry-based approaches combined with technology in enhancing student engagement and understanding. Further research could explore the long-term effects of implementing this instructional approach and investigate its impact on broader aspects of student learning in science education.