Article Per Year (5 Year)
p-Index From 2021 - 2026
3.79
P-Index
This Author published in this journals
All Journal Teknika Indonesian Green Technology Journal The Journal of Pure and Applied Chemistry Research Jurnal IUS (Kajian Hukum dan Keadilan) Pendas : Jurnah Ilmiah Pendidikan Dasar Unes Law Review Jurnal Surya Kencana Dua: Dinamika Masalah Hukum & Keadilan Indonesian Journal of Chemical Science and Technology Mosharafa: Jurnal Pendidikan Matematika Komunika: Journal of Communication Science and Islamic Dakwah Journal of Energy, Material, and Instrumentation Technology Jurnal Hukum Legalita Elementary School: Jurnal Pendidikan dan Pembelajaran ke-SD-an Kartika: Jurnal Studi Keislaman Journal of Smart Agriculture and Environmental Technology Sinergi International Journal of Law Jurnal Pengabdian Masyarakat dan Riset Pendidikan Masterpiece: Journal of Islamic Studies and Social Sciences El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Jurnal Pengabdian Widya Dharma Journal of Economic Resilience and Sustainable Development
Warsito
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Veterinary Other

Published : 25 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 25 Documents
Search

 1   2   3 
Analysis of Electrical Potential in a Thermoelectric Generator Utilizing Cooking Stove Waste Heat Pauzi, Gurum Ahmad; Aprilia Habibah; Ali Akbar Raksa Gandi; Yulianti, Yanti; Warsito; Apriyanto, Donni Kis
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 4 (2025): Journal of Energy, Material, and Instrumentation Technology (In Press)
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.437

Abstract

The need for sustainable alternative energy sources has driven increasing interest in waste heat utilization, particularly from domestic and commercial activities such as cooking stoves. This study analyzes the potential for electrical energy generation from waste heat produced by commercial restaurant stoves using a multi-module thermoelectric generator (TEG) system based on Peltier modules (TEC1-12706 and TEG 1848) equipped with a cooling mechanism. The experimental procedure involved characterizing the electrical performance of the modules under a controlled heat source, followed by direct application to an LPG stove with variations in the distance between the heat source and the module to meet specific temperature conditions. The results demonstrate a strong nonlinear relationship between the temperature difference (delta T) and the output voltage, with optimal performance observed within a delta T range of 40 to 65 degrees Celsius. During stove testing, the system generated a maximum output power of 804 milliwatts at a delta T of approximately 53 degrees Celsius. These findings indicate that the utilization of stove waste heat through serially connected TEG modules combined with active thermal management represents a feasible approach for direct current electricity generation in waste heat recovery applications. However, the overall efficiency remains constrained by internal module resistance and thermal contact instability under real operating conditions.
Digital Storytelling in STEM Mathematics: Communicating Islamic Values through Problem-Based Learning Siregar, Nur Choiro; Anggrayni, Dewi; Warsito; Gumilar, Aris
KOMUNIKA Vol 9 No 2 (2025): DESEMBER
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komunika.v9i2.22505

Abstract

This paper conceptualizes Digital Storytelling (DST) in Scince, Technology, Engeneering, Mathematic (STEM) Mathematics as a pedagogical model for strengthening students’ mathematical problem-solving while enabling the communication of Islamic values honesty (ṣidq), responsibility (amānah), cooperation (taʿāwun), and perseverance (ṣabr) within problem-based learning (PBL). The concept paper argues that digital storytelling can function as a “narrative bridge” connecting STEM contexts, mathematical reasoning, and ethical reflection without turning mathematics lessons into moral instruction. The proposed framework positions storytelling as an integrative learning product developed across three cycles: (1) problem framing in authentic STEM situations, (2) modeling and solution development through collaborative mathematical inquiry, and (3) narrative synthesis, where learners produce short digital stories that explain assumptions, justify strategies, and reflect on value-informed decisions and societal impacts. To guide implementation and assessment, the paper outlines design principles for tasks, group roles, and teacher facilitation that promote accountable talk, respectful dialogue, and evidence-based reasoning. It also proposes an assessment approach combining mathematics performance indicators (representation, reasoning, accuracy, and validation) with value-oriented communication indicators (truthfulness in reporting results, responsibility in teamwork, cooperative discourse, and persistence through iterative revision). The paper concludes by highlighting practical implications for curriculum design, classroom assessment rubrics, and teacher professional development in value-integrated STEM education. Future empirical work is recommended to test the model across diverse contexts, compare it with conventional PBL, and examine how narrative features mediate students’ engagement, reasoning quality, and value communication over time.
Manajemen Inovatif Sarana dan Prasarana Sekolah dalam Meningkatkan Kualitas Pembelajaran Digital Warsito; Hanif, Muh.
Kartika: Jurnal Studi Keislaman Vol. 6 No. 1 (2026): Kartika: Jurnal Studi Keislaman (Februari)
Publisher : Lembaga Pendidikan Tinggi Nahdlatul Ulama (LPT NU) PCNU Kabupaten Nganjuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59240/kjsk.v6i1.559

Abstract

This study aims to analyze the innovative management of school facilities and infrastructure in improving the quality of digital learning at MI Ma'arif NU 01 Pandansari. The research employs a descriptive qualitative approach with data collected through observation, in-depth interviews with principals, teachers, and school committees, as well as documentation of facility inventories and teacher training reports. The findings indicate that innovative management of facilities and infrastructure is implemented through technology-based needs planning, optimization of digital device utilization including smart classrooms, interactive projectors, and internet networks, as well as the development of a learning environment that adapts to technological advancements. The principal acts as a transformational leader and innovator by integrating technology into the learning process and involving teachers and educational staff in collaborative management. The implementation of this innovative management has successfully enhanced students' learning motivation, the effectiveness of online learning, teachers' digital competencies through continuous training programs such as Google Classroom, Canva, and Kahoot, as well as strengthening community participation in facility maintenance. Therefore, innovative management of facilities and infrastructure serves as a strategic factor in improving the quality of digital learning in Islamic elementary schools while maintaining religious values.
Chemical Composition and Quality Parameters of Citronella (Cymbopogon nardus) Essential Oil Based on GC–MS and Physicochemical Analysis Ramadhan, Dwi Sapri; Warsito; Silvianti, Risna; Cahayo, Maf'ud; Azzahra, Vina Octavia
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 9 No. 1 (2026): JANUARY 2026
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v9i1.72493

Abstract

Citronella (Cymbopogon nardus (L.) Rendle) essential oil is widely utilized in the perfume, cosmetic, and pharmaceutical industries, primarily due to its high content of citronellal, geraniol, and citronellol. This study aimed to evaluate the chemical composition and quality parameters of citronella essential oil using gas chromatography–mass spectrometry (GC–MS) and physicochemical analysis. The oil sample was obtained by steam distillation of fresh leaves and subsequently characterized in terms of specific gravity, refractive index, optical rotation, and flash point, while the chemical composition was determined based on GC–MS chromatogram peak areas. The physicochemical analysis showed a specific gravity of 0.894, refractive index of 1.477, optical rotation of −6.59°, and a flash point above 80 °C, indicating compliance with quality standards for citronella essential oil. GC–MS analysis identified 21 compounds, with trans-geraniol (70.65%), geranyl acetate (7.70%), β-citronellol (3.17%), and citronellal (1.78%) as the major constituents. These findings confirm that steam-distilled citronella essential oil exhibits good quality and a chemical profile that supports its potential for essential oil-based industrial applications.
Pentingnya Sertifikat Halal Meningkatkan Sektor Ekonomi Pelaku Usaha Usaha Mikro Kecil dan Menengah (UMKM) Syafrida; Arihta Ester Tarigan; Warsito; Suwardi
Legalita Vol 8 No 1 (2026): Jurnal Hukum Legalita
Publisher : Universitas Muhammadiyah Kotabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47637/legalita.v8i1.2478

Abstract

Abstrak This study examines the importance of halal certification for micro, small, and medium enterprises (MSMEs/UMKM) in Indonesia as mandated by Article 4 of the Halal Product Assurance Law (UUJPH), which requires all products circulating in the country to be halal-certified. Despite government efforts through regulations, online registration, and free certification programs such as SEHATI, many UMKM products remain uncertified or use non-legal halal labels, leaving consumers without legal protection and certainty. Using normative legal research with a qualitative approach based on secondary data, this study finds that halal certification is crucial for UMKM products as it increases sales, expands market access, strengthens competitiveness in national and international markets, supports community economic growth, and ensures legal protection for Muslim consumers’ rights.
Co-Authors Abimanyu Yogadita R Agus Hermawan Ahmad Amarullah, Ahmad Akhmad Sabarudin Ali Akbar Raksa Gandi Aprilia Habibah Apriyanto, Donni Kis Arihta Ester Tarigan Aris Gumilar Azzahra Dhiya Afiyah Azzahra, Vina Octavia Bayyinatul Muchtarohmah Budi Santosa, Achadi Budidarmo, Widodo Cahayo, Maf'ud Dedik Budianta Dewi Anggrayni Elvina Dhiaul Iftitah Eny Yulianti, Eny Esther Br Tarigan, Arihta Galang Tri Mahardika Gumilar, Aris Gunawan Budi Santoso Hari, Fathul Heri Siswanto Ieke Wulan Ayu Kunthum Ria Anggraheny Marjunus, Roniyus Masidin Maulidina, Firda Miranda, Fitri Ariadna Sodi Muh. Hanif Mustakim Nur Choiro Siregar Nur Choiro Siregar, Nur Choiro Nuraini, Yeni Nur’aini, Dhiva Maulida Rizqi Okky Vara Velya Oktaria, Oktaria Duwi Pratiwi Pauzi, Gurum Ahmad Purwo Haryono5 Ramadhan, Dwi Sapri Romi Ramdon Ginanjar Rosli, Roslinda Sanjaya Nugraha Septiana Wijayanti Setyawan, Dodi Yudo Silvianti, Risna Sri Budiyono Subiyantoro, Heru Sudiyo Widodo Sukaesih Ratna Widayanti Sukasih Ratna Widayanti Sukirwan Sumaryo Sumaryo SURYANI, RENI Suwardi Syafrida Syafrida Syafrida Syafrida, Syafrida Syafruddin Syam Tarigan, Arihta Esther Titian Ajeng Wahyuningtyas Widodo Wisnu Nugroho Aji, Wisnu Nugroho Yanti Yulianti