Article Per Year (5 Year)
p-Index From 2021 - 2026
4.419
P-Index
This Author published in this journals
All Journal International Journal of Advances in Applied Sciences Jurnal Ilmu Pendidikan Sainstek Jurnal Pendidikan Sains Jurnal Ilmiah Hukum dan Dinamika Masyarakat The Journal of Pure and Applied Chemistry Research Jurnal Kimia dan Kemasan Jurnal IPTEK Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Chemistry Indonesian Journal of Chemical Research Referensi : Jurnal Ilmu Manajemen dan Akuntansi Jurnal Pembelajaran Sains Jurnal Karinov Stannum : Jurnal Sains dan Terapan Kimia Indonesian Journal for Social Responsibility Jurnal Graha Pengabdian Jurnal Kimia dan Kemasan Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Journal of Engineering Science and Technology Jurnal Teknik Kimia dan Lingkungan Politika Progresif : Jurnal Hukum, Politik dan Humaniora Innovation for Community Service Journal Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Jurnal Akademika Kimia
Aman Santoso
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

Published : 44 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 44 Documents
Search

 1   2   3   4   5 
The Heutagogy Model of Learning Innovation in Increasing The Skill Needs of The Digital Era of Vocational Students Yoto, Yoto; Ulfatin, Nurul Rahma; Zahro, Azizatuz; Putra, Andika Bagus; Subandi, Mahfudi Sahly; Rochmawati, Rochmawati; Santoso, Aman
Jurnal Ilmu Pendidikan Vol 28, No 2 (2022): December
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um048v28i2p98-104

Abstract

The digital technology-based heutagogy learning model characterizes the progress of implementing vocational education in a nation. This study aims to develop a heutagogy learning model for vocational students through mapping its components. The method in this study uses descriptive qualitative. Research subjects include university lecturers, vocational high school teachers, and industrial employees. The research location is focused on East Java. The research instrument consisted of a questionnaire and documentation. The heutagogy component for vocational students includes critical thinking, collaboration skills, communication skills, and creativity. Mapping the four components supporting the application of the heutagogy learning model needs to be done to improve the quality of vocational students in the digital era
Implementation of Problem-Based Learning-Stem Strategy on Students’ Conceptual Understanding and Critical Thinking in Fundamental of Chemical Equilibrium Prastika, Frissa Rizkihati; Dasna, I Wayan; Santoso, Aman
Jurnal Ilmu Pendidikan Vol 28, No 1 (2022): June
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um048v28i1p1-6

Abstract

This research aims to determine differences in students’ conceptual and critical thinking of XI High School Students that teach using Problem Based Learning-STEM strategy on learning chemical equilibrium. This research use design quasi-experimental factorial 2x2 design with convenience sampling. Instruments used in this research are students’ conceptual and critical thinking tests. The result shows that (1) there are differences students’ conceptual and critical thinking in the group that learned by Problem Based Learning-STEM with the group that learned using Problem Based Learning Strategy, (2) there are differences in students’ conceptual and critical thinking based on initial abilities in the group that learned by Problem Based Learning-STEM with the group that learned using Problem Based Learning strategy, (3) there is no interaction of Problem Based Learning-STEM strategy and Problem Based Learning based on initial abilities to students’ conceptual and critical thinking
Biodiesel Characterization Study from Castor Oil (Jatropha Curcas L) with CaO/K2O Catalyst Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Januarti, Wenny
Jurnal IPTEK Vol 27, No 2 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i2.4188

Abstract

Biodiesel is still being developed as a renewable fuel to replace a diesel fuel. Biodiesel production of castor oil has high potential because the oil did not compete with foods. Furthermore, a transesterification process can be optimized by heterogeneous base catalysts. Thus, this study aims to: (1) synthesize CaO/K2O catalysts to be used in the transesterification process, (2) synthesize biodiesel of castor oil and characterize it according to SNI 7182:2015, and (3) study the effect of CaO/K2O variations on biodiesel product. This laboratory experimental research was carried out in the following stages: (1) characterization of castor oil, (2) esterification, (3) preparation of CaO/K2O catalyst, (4) transesterification, and (5) characterization of the synthesized methyl ester. The results showed that the characterization of castor oil included a density of 1.074 g/mL, an acid number of 9.5 mg/g, a free fatty acid (FFA) of 5.09%, and a viscosity of 701 cSt. Stratified esterification and transesterification showed a significant effect on reducing FFA, so the characterization of the transesterified methyl ester from the best catalyst variations (CaO/K2O 1:2) included a density of 1.016 g/mL, an acid number of 1.1 mg/g, FFA content of 0.58%, moisture content of 1.1%, viscosity 43.55 cSt, and refractive index (25) of 1.466.
Synthesis of Biodiesel from Refined Waste Cooking Oil with Active Natural Zeolite Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Wele, Amonius Regino
Indonesian Journal of Chemical Research Vol 11 No 3 (2024): Edition for January 2024
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.11-ama

Abstract

This research evaluates refining waste cooking oil with active natural zeolite, utilizes it for biodiesel synthesis, and characterizes the synthesized methyl ester. This experimental laboratory research was carried out: (1) activation of natural zeolite, (2) refining waste cooking oil with active natural zeolite, (3) determination of free fatty acid (FFA) content of the oil, (4) transesterification with KOH catalyst, (5) characterization of the synthesized methyl esters according to the SNI 7182:2015, and (6) identification of the methyl ester component by GC-MS. The results showed that the FFA content of the refined waste cooking oil using active natural zeolite with concentrations of 10%, 20%, and 30% per mass of oil were 2.97, 2.0, and 1.56%, respectively. The yield of methyl ester transesterified with various concentrations of KOH (0.8, 1.0, and 2% per mass of oil), respectively, were 80.13, 85.34, and 74.98%. The synthesized methyl ester resulted in the characteristics: 0.867 g/mL of density; 5.72 cSt of viscosity; 1.449 of refractive index; 1.46 g KOH/g of acid number; and 0.023% of water content. Identification of GC-MS obtained the synthesized methyl esters, which include: 46.10% of methyl hexadecanoic, 41.68% of methyl 9-octadecanoic, 6.42% of methyl octadecanoic, and 5.80% of methyl eicosanoic.
Pengaruh Jenis Alkohol pada Sintesis Alkil Ester dari CPO melalui Reaksi Transesterifikasi Menggunakan Katalis Heterogen CaO-MgO Santoso, Aman; Rizky, M; Sumari, Sumari; Wijaya, Anugrah Ricky; Retnosari, Rini; Asrori, Muhammad Roy
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 5 No. 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2021.005.01.01

Abstract

Low quality CPO can be made alkyl esters by transesterification reaction by alcohol. The type of alcohol that is often used in the transesterification reaction is methanol but is toxic, so we need an alternative type of alcohol. The purpose of this research is the synthesis of alkyl esters from CPO through transesterification reaction using heterogeneous catalyst CaO-MgO with different types of alcohol. This experimental laboratory research through stages:  CPO refinement, activation of CaO-MgO catalysts,  synthesis of alkyl esters from CPO with two types alcohol, identification of the components of the synthesis compound of the synthesized alkyl ester mixture using GC-MS. The results showed that (1) alkyl esters can be synthesized from CPO through the transesterification reaction with methanol and CaO-MgO catalysts with a yield of 85.72%, while the transformation of ethanol is difficult to form ethyl ether (2) the character of methyl ester synthesized has a density 0.86 g / mL, viscosity 3.23 cSt, refractive index 1.44819, and acid number 0.747 mg KOH / g methyl ester, (3) the main component of the synthesized alkyl ester contains 1,200% methyl myristic compound, methyl palmitate 40,637% methyl linoleate 9.332%, methyl 7-octadecenoate 42.986%, and methyl stearate 4.427%.
The Effectiveness of Aerobic and Anaerobic Methods During Start-up in Biological Shrimp Pond Wastewater Treatment Sanjaya, Eli Hendrik; Amara, Aulia; Hengky Pamungkas, Yahya; Ricky Wijaya, Anugrah; Santoso, Aman; Yulistyorini, Anie; Li, Yu-You; Chen, Hong; Fadhil Md Din, Mohd
The Journal of Pure and Applied Chemistry Research Vol. 12 No. 3 (2023): September-December 2023
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2023.012.03.3309

Abstract

One of the aquaculture wastes is shrimp pond wastewater (SPW). Generally, SPW comes from the rest of shrimp feed, shrimp dung, and died shrimp during the cultivation. As SPW is organic waste, biological wastewater treatment is the best choice. Biological method has low operating costs and environmentally friendly. There are two kind of biological methods, namely aerobic and anaerobic. Both methods have advantages and disadvantages. In this research, the performance of aerobic and anaerobic methods in treating SPW were investigated using batch experiment for more than 200 days. The results showed that the performance of the aerobic system in the initial phase was better than that of the anaerobic system, especially, in phase one which is the adaptation phase. In the first phase, COD, carbohydrate and protein removal in the aerobic system were 25.93%, 75.2% and 88.59%, while in the anaerobic system were 12.82%, 36.03% and 51.01%. In phases 5 to 10, both systems have similar performance with the optimum performance in phase 9 with 6 times substrate dilution. In this optimum phase, the COD removal values are 90% and 85% for aerobic and anaerobic systems, respectively. Meanwhile, the removal of carbohydrates and protein from both systems is about 95%.
Concentration Effect of MgO/K2O Catalyst on Transesterification of Castor Seed (Ricinus communis) Oil Aman Santoso; Sumari Sumari; Muhammad Roy Asrori; Irsyadatun Ni’mah
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 2 (2024): October 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i2.4692

Abstract

Fatty acid methyl esters can be obtained from the synthesis of vegetable oil with methanol using a base catalyst. Vegetable oil has the potential as biodiesel feedstock, the methyl ester character of various vegetable oils is different as from castor seed oil. Synthesis of methyl esters by transesterification reaction with the addition of a heterogeneous catalyst, namely MgO/K2O. The purpose of this study was to synthesize methyl esters from castor seed oil with MgO/K2O catalyst and to determine the yield and character. The research went through 6 stages which included (1) isolation of castor seed oil, (2) determination of free fatty acid (ALB) levels of castor seed oil, (3) manufacture of MgO/K2O catalyst (4) esterification of castor seed oil with H2SO4 catalyst (5) transesterification of jatropha seed oil with methanol and various variations in the concentration of the catalyst MgO/K2O 1%, 2%, 3%, (6) characterization of the synthesized methyl ester which includes tests of density, viscosity, acid number, refractive index and moisture content. The results showed that the concentration of MgO/K2O had an effect on the synthesis of methyl esters from castor seed oil, where the optimization condition was achieved at a concentration of 2% MgO/K2O with a yield of 97.99%. The methyl ester character which is synthesized from castor seed oil with a 2% MgO/K2O catalyst is having a density of 1.0244 g/mL, a viscosity of 22.531 cSt, an acid number of 2.81 g KOH/g methyl ester, a refractive index of 1.456, and a moisture content. 0.035%.
Optimalisasi Pemahaman Materi Piramida Makanan melalui “MIRAMA”: Media Interaktif Piramida Rantai Makanan Pada Kelas VII SMP Laboratorium UM Munzil, Munzil; Santoso, Aman; Sumari, Sumari; Muntholib, Muntholib; Agustina, Nur Indah; Fitriana, Nurin
Jurnal KARINOV Vol 7, No 3 (2024): September
Publisher : Institute for Research and Community Service (LP2M), Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um045v7i3p182

Abstract

Penelitian ini bertujuan memberdayakan guru MGMP Kimia se-Kabupaten Sumenep melalui Edukit berbasis PhET Interactive Simulator untuk meningkatkan kualitas pembelajaran kimia submikroskopik, yang sering menjadi tantangan dalam memahami konsep abstrak. Program ini mengadopsi pendekatan penyuluhan dan pelatihan, memberikan materi serta praktik langsung penggunaan PhET dan SiPERU, sehingga guru mampu mengintegrasikan teknologi secara optimal dalam pembelajaran digital. Hasil survei menunjukkan bahwa 72,5% dari 51 responden menilai PhET dan SiPERU sangat mudah digunakan (skor 5), 25,5% memberi skor 4, dan hanya 2% memberi skor 3, tanpa skor di bawah itu. Mayoritas guru merasa media ini sangat membantu dalam mempermudah pembelajaran kimia. Selain itu, survei kualitas penyampaian materi oleh narasumber menunjukkan 80,4% responden memberikan skor 5 dan 19,6% skor 4, mengindikasikan penyampaian yang sangat efektif. Program ini berhasil meningkatkan kompetensi guru dalam menyampaikan konsep submikroskopik melalui media digital, sekaligus meningkatkan kepercayaan diri mereka dalam mengintegrasikan teknologi ke dalam pembelajaran. Dampak positif lainnya adalah terciptanya modul ajar berbasis media digital, memperkuat pendekatan pembelajaran sepanjang hayat, dan menjawab tantangan pendidikan modern. Program ini memiliki potensi untuk diperluas melalui pendampingan berkelanjutan dan kolaborasi lebih luas dengan berbagai pihak untuk memastikan dampak yang lebih signifikan dan berkelanjutan. Kata kunci— MGMP, PhET, SiPERU, Pembelajaran Sepanjang Hayat Abstract This study aimed to empower chemistry teachers in the Subject Teachers’ Forum (MGMP) of Sumenep Regency through the implementation of a chemistry teaching toolkit based on the PhET Interactive Simulator. The program focused on enhancing the quality of submicroscopic-level chemistry teaching, which often presents challenges in understanding abstract concepts. The initiative employed a combination of workshops and training sessions, providing materials and hands-on practice with PhET and SiPERU to enable teachers to integrate technology optimally into digital learning. Survey results indicated that 72.5% of 51 respondents rated PhET and SiPERU as very easy to use (score 5), 25.5% gave a score of 4, and only 2% assigned a score of 3, with no scores below 3. The majority of teachers found these tools highly effective in facilitating the teaching of chemistry. Furthermore, a survey on the effectiveness of the trainers showed that 80.4% of respondents gave the highest score (5) for clarity and ease of understanding, while 19.6% rated them with a score of 4, reflecting highly effective delivery. This program successfully improved teachers' competence in conveying submicroscopic concepts through digital media while boosting their confidence in integrating technology into instruction. Additional positive outcomes included the development of digital teaching modules, strengthening lifelong learning approaches, and addressing modern educational challenges. The program holds potential for expansion through ongoing support and broader collaborations to ensure more significant and sustainable impacts. Keywords— MGMP, PhET, SiPERU, Life Long Learning
Dampak Pembangunan Sanitasi dan Instalasi Pengolahan Limbah Cair Domestik Sederhana Pondok Pesantren Kalimasada Jombang Sanjaya, Eli Hendrik; Edy, Duwi Leksono; Nasih, Ahmad Munjin; Alfianto, Imam; Santoso, Aman; Yahmin, Yahmin
Innovation for Community Service Journal Vol 2 No 2 (2024): Oktober 2024
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v2i2.14833

Abstract

Program pengabdian ini bertujuan untuk meningkatkan sanitasi dan mengelola limbah cair domestik di Pondok Pesantren Kalimasada, Jombang. Upaya untuk mencapai tujuan tersebut, program melibatkan langkah-langkah seperti penilaian awal, perencanaan desain instalasi pengolahan limbah cair, pembangunan instalasi, pelatihan untuk penghuni, serta operasi, pemeliharaan, pemantauan, dan evaluasi berkelanjutan. Upaya ini dilakukan untuk menjaga kebersihan dan kesehatan lingkungan serta memberikan manfaat positif bagi pondok pesantren dan masyarakat sekitar. Berdasarkan hasil angket pra dan pasca program yang dikuatkan dengan observasi saat atau selama program, diperoleh hasil peningkatan yang signifikan antara pra-saat-dan pasca program. Dimulai dari ketersediaan fasilitas yang sebelumnya Pondok Pesantren Kalimasada Jombang belum memiliki failitas khusus untuk sistem sanitasi dan instalasi menjadi memiliki, dampak dari tersedianya fasilitas ini berbanding lurus dengan kebersihan yang akan tercipta. Selanjutnya pada perubahan mitra, aspek pengetahuan mengalami peningkatan dari 15% menjadi 45% hingga 95%. Kemudian pada aspek keterampilan mulai dari 25% menjadi 55% dan 85%. Hasil ini dikuatkan berdasarkan hasil wawancara yang menyampaikan terbantu dengan adanya pembangunan sistem sanitasi dan instalasi yang dibangun oleh tim, selain itu program ini juga memperoleh testimoni positif mitra.
Peradilan Pidana Anak di Indonesia: Analisis terhadap Perlindungan Dan Implementasi Upaya Diversi Aman Santoso; Hartoyo Hartoyo; Moh. Taufik
Politika Progresif : Jurnal Hukum, Politik dan Humaniora Vol. 2 No. 1 (2025): Maret: Politika Progresif : Jurnal Hukum, Politik dan Humaniora
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/progres.v2i1.1337

Abstract

Juvenile criminal justice in Indonesia is an important aspect of the justice system that focuses on protecting the rights of children in conflict with the law. One of the efforts regulated in Law Number 11 of 2012 concerning the Juvenile Criminal Justice System (SPPA) is diversity, which aims to prevent children from the judicial process that can harm their future. This study aims to analyze the protection of children's rights in the criminal justice process, as well as the implementation of diversity in the juvenile criminal justice system in Indonesia. The method used in this study is a qualitative approach with descriptive analysis, through literature studies and interviews with various related parties, such as judges, prosecutors, and community counselors. The results of the study indicate that although there are efforts to protect children's rights in criminal justice, the implementation of diversity still faces a number of challenges, including a lack of understanding among law enforcement officers, limited facilities, and a mismatch between policies and practices in the field. This study suggests the need to increase the capacity of law enforcement officers and other stakeholders in understanding and implementing diversity efforts optimally, as well as the need for policy evaluation to improve the effectiveness of child protection in criminal justice.
Co-Authors Agustina Dinda Putri Larasati Agustina, Nur Indah Ahmad Munjin Nasih Amara, Aulia Andyka Medarda Pradana Anie Yulistyorini Anugrah Ricky Wijaya Armaini, Armaini Azizatuz Zahro Berlian Enggarani Daratu Kusuma Eviana Putri Dedek Sukarianingsih Deni Ainur Rokhim Dinar Rachmadika Baharintasari Dwi Ratna Wulandari Edy, Duwi Leksono Effendy Effendy Eli Hendrik Sanjaya Elinira Subandi Endang Budiasih Evy Damayanthi Fadhil Md Din, Mohd Fauziatul Fajaroh Harno Dwi Pranowo Hartoyo Hartoyo Hayuni Retno Widarti Hengky Pamungkas, Yahya Hong Chen I Wayan Dasna Ida Bagus Suryadarma Imam Alfianto Irsyadatun Ni’mah Januarti, Wenny Kusumaningrum, Irma Kartika Lailatur Rizqiyah Li, Yu-You Lilik Eka Radiati Lutfi Nur Azizah Mahmudah, Siti Nur Marisa Lidia Anggarwati Mauliana Nursafitri MOH. TAUFIK Mohammad Bukhori Muhammad Muchson Muhammad Roy Asrori Mujahidah, Amiroh Nabilah Muntholib Munzil Naim, Suratman S. Nazriati Nazriati dkk. Ni’mah, Irsyadatun Nur Hikmah Nurin Fitriana Nursafitri, Mauliana Nurul Ultiyati Peter Juvenaris Manek Prakasa, Yana Fajar Prastika, Frissa Rizkihati Putra, Andika Bagus Rachman, Ihsan Budi Retnosari, Rini Ridwan Joharmawan Rizky, M Rochmawati, Rochmawati Rohman Fantusi Rohman Fantusi Sakhi, Fillah M. Sinta Nur Laila Siti Marfuah, Siti Siti Marfu’ah Subandi Subandi Subandi, Mahfudi Sahly Suhadi Ibnu Suhadi Ibnu Suhadi Ibnu, Suhadi Sumari Sumari Suratman S. Naim Syafiuddin Syafiuddin Ulfatin, Nurul Rahma Wele, Amonius Regino Widi Dewi Ruspitasari Yahmin Yahmin Yana Fajar Prakasa Yana Fajar Prakasa Yoto Yoto, Yoto Yuski Sudana Yusuf Abdullah