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All Journal Jurnal Pengabdian Magister Pendidikan IPA Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Indonesian Review of Physics (IRiP) Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat JURNAL PENGABDIAN KEPADA MASYARAKAT CAHAYA MANDALIKA (ABDIMANDALIKA) Jumper : Jurnal Mahasiswa Pendidikan Olahraga Empiricism Journal Jurnal Penelitian dan Pembelajaran Fisika Indonesia Lensa: Jurnal Kependidikan Fisika Reflection Journal Journal of Authentic Research International Journal of Ethnoscience and Technology in Education Media Pendidikan Matematika
Pangga, Dwi
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Humanities Astronomy Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Co-Precipitation Synthesis and Analysis of Co and Zn Doped Barium M-Hexaferrites Pangga, Dwi; Pathoni, Haerul; Suprianto, Suprianto
Lensa: Jurnal Kependidikan Fisika Vol 12, No 1: June 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i1.11732

Abstract

Barium hexaferrite (BaFe12O19) is a material of significant interest due to its wide range of applications. In this study, we synthesized barium M-hexaferrites (BaFe12-2xCoxZnxO19) powders through the co-precipitation method, starting from BaCO3 and FeCl3.6H2O powders, with Co and Zn powders used as dopant materials. The variations in x values were set at 0, 0.2, 0.4, 0.6, 0.8, and 1. Our findings indicate that the co-precipitation method is highly effective for synthesizing barium M-hexaferrites (BaFe12-2xCoxZnxO19) nanomaterials, which contain more than 89% iron elements and have an average particle size of 50 nm. The Differential Thermal Analysis (DTA) and Thermogravimetric Analysis (TGA) reveal that phase transformations occur at temperatures of 285°C and in the range of 750-840°C. Further analysis using the Rietveld refinement method demonstrates that the barium M-hexaferrite phase begins to form at relatively low temperatures, with the most optimal yield observed at x = 0.4. At temperatures exceeding 740°C, there is a tendency to form a single-phase α-Fe2O3 (hematite). The introduction of Co and Zn as dopant ions results in only minor changes to the lattice parameters of the basic hexagonal crystal structure. This comprehensive study underscores the viability of the co-precipitation method for producing high-quality barium M-hexaferrites and provides valuable insights into the effects of Co and Zn doping on the structural and thermal properties of these materials.
Efektivitas Penggunaan Metode Active Learning Tipe Quiz Team terhadap Minat dan Prestasi Belajar Siswa Pangga, Dwi; Armansyah, Armansyah
Lensa: Jurnal Kependidikan Fisika Vol 11, No 1: June 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v11i1.10375

Abstract

Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan metode aktif learning tipe quiz team dalam meningkatkan minat dan prestasi belajar siswa kelas VII SMP. Jenis metode penelitian yang digunakan dalam penelitian ini adalah penelitian eksperimen. Populasi penelitian adalah siswa kelasVII SMP, sedangkan sampel penelitian adalah kelas VIIB sebagai (kelas eksperimen) yang diberi perlakuan menggunakan metode active learning tipe quiz team dengan jumlah siswa 38 orang dan kelas VIIA sebagai (kelas kontrol) yang menggunakan metode konvensional dengan jumlah siswa 40 orang. Pengambilan sampel dilakukan dengan teknik cluster random sampling. Instrumen penelitian yang digunakan dalam pengumpulan data adalah tes hasil belajar dan angket respon siswa. Berdasarkan hasil analisis data diperoleh nilai rata-rata kelas eksperimen sebesar 73,29 dengan nilai tertinggi 90 dan nilai terendah 45, sedangkan kelas kontrol nilai rata-rata kelas sebesar 52,25 dengan nilai tertinggi 80 dan nilai terendah 25. Hasil sebaran angket, diperoleh respon pada kelas eksperimen sebesar 34,68 dengan (kategori tinggi) siswa merespon baik metode pembelajaran tipe Quiz Team. Berdasarkan hasil uji hipotesis diperoleh thitung sebesar 5,64 sedangkan ttabel sebesar 1,668. Karena thitung > ttabel, maka dapat disimpulkan bahwa metode pembelajaran tipe Quiz Team efektif meningkatkan minat dan prestasi belajar fisika siswa.The Influence of Problem-Based Learning (PBL) Model on Physics Problem-Solving Skills of StudentsAbstractThis study aims to determine the effectiveness of using the quiz team active learning method in enhancing the interest and academic achievement of seventh-grade students in junior high school. The research design employed in this study is experimental research. The study population consisted of seventh-grade students in junior high school, while the research sample included class VIIB (experimental class) treated using the quiz team active learning method with 38 students and class VIIA (control class) using conventional methods with 40 students. The sampling technique used was cluster random sampling. The research instruments for data collection included a learning achievement test and a student response questionnaire. Based on the data analysis, the experimental class obtained an average score of 73.29 with the highest score of 90 and the lowest score of 45, while the control class had an average score of 52.25 with the highest score of 80 and the lowest score of 25. According to the questionnaire distribution, the response in the experimental class was 34.68 (high category), indicating that students responded well to the quiz team learning method. Based on the hypothesis testing results, the t-value obtained was 5.64, while the critical t-value was 1.668. Since the calculated t-value > critical t-value, it can be concluded that the quiz team learning method is effective in improving students' interest and academic achievement in physics.
Analisis Uji Impak pada Elektroplating Krom Dekoratif Menggunakan Logam Basis Tembaga dengan Variasi Suhu Putra, Zulfikar Maulana; Ahzan, Sukainil; Pangga, Dwi
Journal of Authentic Research Vol. 2 No. 2 (2023): July
Publisher : LITPAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jar.v2i2.2141

Abstract

Penelitian ini mengkaji pengaruh variasi suhu selama proses elektroplating krom dekoratif terhadap kekuatan impak dan kecerahan logam dasar tembaga. Elektroplating dilakukan pada tiga suhu berbeda: 50°C, 60°C, dan 70°C. Hasil penelitian menunjukkan bahwa suhu elektroplating yang lebih tinggi menghasilkan peningkatan kecerahan dan kekuatan impak sampel tembaga yang dilapisi. Secara khusus, kekuatan impak meningkat dari 1,8371 joule/mm² pada suhu 50°C menjadi 1,9259 joule/mm² pada suhu 70°C. Hal ini menunjukkan bahwa pengendalian suhu pelapisan sangat penting untuk mengoptimalkan sifat estetika dan mekanik dari logam yang dilapisi. Temuan ini sangat relevan bagi industri seperti otomotif dan dirgantara, di mana peningkatan performa mekanik dan kualitas permukaan sangat penting. Penelitian ini berkontribusi pada pemahaman yang lebih baik tentang peran suhu dalam proses elektroplating dan memberikan wawasan praktis untuk meningkatkan kualitas produk melalui optimasi suhu. Analysis of Impact Test on Decorative Chrome Electroplating Using Copper Base Metal with Temperature Variations Abstract This study investigates the effect of temperature variations during the decorative chrome electroplating process on the impact strength and brightness of copper-based metal. Electroplating was conducted at three different temperatures: 50°C, 60°C, and 70°C. The results indicated that higher electroplating temperatures lead to increased brightness and impact strength of the coated copper samples. Specifically, the impact strength increased progressively from 1.8371 joules/mm² at 50°C to 1.9259 joules/mm² at 70°C. This suggests that controlling the plating temperature is crucial for optimizing both the aesthetic and mechanical properties of electroplated metals. These findings are particularly relevant for industries such as automotive and aerospace, where enhanced mechanical performance and surface quality are critical. The study contributes to a better understanding of the role of temperature in the electroplating process and provides practical insights for improving product quality through temperature optimization.
Optimization of Binder Percentage in Organic Waste-Based Briquettes: Impact on Calorific Value and Combustion Rate Muliani, Muliani; Pangga, Dwi; Ahzan, Sukainil
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.13314

Abstract

This research focuses on optimizing the binder percentage in organic waste-based briquettes to improve their calorific value and combustion rate. Conducted through experimental methods, organic waste such as sawdust, dry leaves, and branches were processed into briquettes using varying concentrations of tapioca starch as a binder (10%, 12.5%, 15%, and 17.5%). The experiment evaluated key performance metrics, including calorific value, combustion rate, moisture content, ash content, and briquette density. Results showed that the optimal calorific value (9,234 cal/g) was achieved with 10% binder, while the highest combustion rate (0.586 g/min) occurred at 15% binder concentration. These findings suggest that lower binder percentages result in higher energy efficiency, while higher binder content prolongs combustion. However, increased binder content also led to higher ash production, with the highest ash content recorded at 17.5% binder. The research highlights that balancing the binder ratio is essential for creating briquettes that are both energy-efficient and environmentally sustainable, offering a viable alternative to traditional fuels in Indonesia's pursuit of renewable energy solutions.
Effect of Base Material Variations on the Characteristics of Briquettes from Coconut Shell Charcoal and Corncob Mixtures Melenia, Melenia; Ahzan, Sukainil; Pangga, Dwi
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.13305

Abstract

This study investigates the effects of varying base materials, specifically coconut shell charcoal (ATK) and corncob charcoal (ABJ), on the characteristics of biobriquettes. The research employs an experimental method, analyzing the impact of different ATK and ABJ proportions on calorific value, ash content, moisture content, density, and combustion rate. The biobriquettes were produced by mixing coconut shell and corncob charcoal with 10% tapioca starch adhesive, molded into cubes, and dried. The results show that increasing the ATK proportion improves the calorific value, with the highest value of 10,640 calories in briquettes with 90% ATK. In contrast, higher ABJ content results in faster combustion rates but lower energy efficiency, with the lowest calorific value of 6,424 calories in briquettes containing 90% ABJ. The study also highlights that all biobriquettes meet Indonesian National Standards (SNI) for moisture content and calorific value, although only the 90% ATK sample meets the ash content standard. These findings suggest that coconut shell charcoal is a superior biomass material for producing high-performance biobriquettes, with a 90% ATK and 10% adhesive combination yielding the best overall results for sustainable energy applications.
Pengaruh Variasi Komposisi Sekam Padi dan Arang Tempurung Kelapa terhadap Nilai Kalor dan Laju Pembakaran Biobriket Dewi, Nurul Yaqin Rusna; Ahzan, Sukainil; Pangga, Dwi
Empiricism Journal Vol. 5 No. 2: December 2024
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/ej.v5i2.2027

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi komposisi sekam padi (ASP) dan arang tempurung kelapa (ATK) terhadap karakteristik biobriket, seperti kadar air, kadar abu, densitas, nilai kalor, dan laju pembakaran. Variasi komposisi bahan adalah 0%-90% ASP dan 90%-0% ATK, dengan perekat tepung tapioka sebesar 10%. Hasil penelitian menunjukkan bahwa nilai kalor tertinggi (9.034 kkal/g) ditemukan pada komposisi 45% ASP + 45% ATK, sementara laju pembakaran tertinggi (0,7254 g/menit) pada komposisi 90% ASP + 0% ATK. Biobriket dengan komposisi optimal (45% ASP + 45% ATK) memiliki keseimbangan antara nilai kalor tinggi dan pembakaran stabil. Semua sampel memenuhi standar SNI untuk kadar air (maksimal 8%) dan nilai kalor (minimal 5000 kkal/g). Penelitian ini menunjukkan potensi biobriket berbasis limbah pertanian sebagai bahan bakar alternatif yang berkelanjutan. The Effect of Rice Husk and Coconut Shell Charcoal Composition Variations on the Calorific Value and Combustion Rate of BiobriquettesAbstractThis study aims to evaluate the effect of rice husk (ASP) and coconut shell charcoal (ATK) composition variations on biobriquette characteristics, including moisture content, ash content, density, calorific value, and combustion rate. The composition variations ranged from 0%-90% ASP and 90%-0% ATK, with 10% tapioca starch as a binder. Results indicated the highest calorific value (9.034 kkal/g) at 45% ASP + 45% ATK, while the highest combustion rate (0.7254 g/min) was observed at 90% ASP + 0% ATK. Biobriquettes with an optimal composition (45% ASP + 45% ATK) achieved a balance of high calorific value and stable combustion. All samples met the SNI standards for moisture content (maximum 8%) and calorific value (minimum 5000 kkal/g). This study highlights the potential of agricultural waste-based biobriquettes as a sustainable alternative fuel source.
Peran Tri Hita Karana dalam Kehidupan Masyarakat dan Institusi: Kajian Komprehensif Berdasarkan Literatur Ahzan, Sukainil; Pangga, Dwi; Sutajaya, I Made; Astawa, Ida Bagus Made; Suja, I Wayan
Empiricism Journal Vol. 5 No. 2: December 2024
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/ej.v5i2.2370

Abstract

Penelitian ini mengeksplorasi peran filosofi Tri Hita Karana (THK) sebagai kerangka kerja untuk menciptakan harmoni dalam kehidupan masyarakat dan institusi di Bali. Dengan menggunakan tinjauan pustaka sistematis berbasis pedoman PRISMA, penelitian ini menganalisis 30 artikel yang relevan dari tahun 2014 hingga 2024. Hasil penelitian menunjukkan bahwa THK memainkan peran signifikan dalam berbagai aspek kehidupan, termasuk hubungan spiritual dengan Tuhan (parhyangan), interaksi sosial (pawongan), dan pelestarian lingkungan (palemahan). Filosofi ini tidak hanya mendukung harmoni sosial dan budaya melalui kegiatan kolektif seperti gotong royong dan pelestarian adat, tetapi juga menjadi pedoman dalam praktik keberlanjutan lingkungan. Pada tingkat institusi, THK diadopsi dalam kebijakan pemerintah, pendidikan, dan pariwisata, menghasilkan keseimbangan antara pembangunan ekonomi, pelestarian budaya, dan konservasi lingkungan. Meski demikian, tantangan dalam implementasi THK mencakup tekanan globalisasi, individualisme, dan modernisasi yang dapat mereduksi nilai-nilai tradisional. Penelitian ini memberikan kontribusi dengan mengidentifikasi praktik terbaik dalam penerapan THK serta relevansinya dalam konteks global. Implikasi praktis dari penelitian ini mencakup pengembangan kebijakan berbasis THK, penguatan strategi pendidikan, dan model keberlanjutan institusi yang menekankan keterpaduan antara nilai tradisional dan inovasi modern. Hasil ini mempertegas bahwa THK bukan sekadar filosofi lokal, melainkan pendekatan universal yang relevan untuk mendukung pembangunan berkelanjutan dan harmoni sosial di era modern. The Role of Tri Hita Karana in Community and Institutional Life: A Comprehensive Literature ReviewAbstractThis study explores the role of the Tri Hita Karana (THK) philosophy as a framework for fostering harmony in community and institutional life in Bali. Using a systematic literature review guided by PRISMA protocols, the research analyzes 30 relevant articles published between 2014 and 2024. The findings demonstrate that THK plays a significant role across various aspects of life, including spiritual connections with God (parhyangan), social interactions (pawongan), and environmental preservation (palemahan). This philosophy not only promotes social and cultural harmony through collective activities such as communal work (gotong royong) and cultural preservation but also serves as a guideline for environmental sustainability practices. At the institutional level, THK is adopted in government policies, education, and tourism, creating a balance between economic development, cultural preservation, and environmental conservation. However, challenges in implementing THK include pressures from globalization, individualism, and modernization, which can erode traditional values. This study contributes by identifying best practices in applying THK and highlighting its relevance in a global context. The practical implications of this research include the development of THK-based policies, the strengthening of educational strategies, and institutional sustainability models that emphasize the integration of traditional values and modern innovation. These findings underscore that THK is not merely a local philosophy but a universal approach relevant to supporting sustainable development and social harmony in the modern era.
Implementing a Hybrid Ethnoscience Project-Based Learning (E-PjBL) Model Integrated with Virtual Assistive Technology to Enhance Critical Thinking Performance of Science Teacher Candidates Wahyudi, Wahyudi; Harjono, Ahmad; Pangga, Dwi
International Journal of Ethnoscience and Technology in Education Vol 2, No 1 (2025): March
Publisher : Faculty of Engineering and Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/ijete.v2i1.14106

Abstract

Training critical thinking skills in science teacher candidates (STC) faces challenges, particularly due to the ineffectiveness of traditional teaching models, resulting in suboptimal critical thinking performance. This study aims to implement a Hybrid Ethnoscience Project-Based Learning (E-PjBL) model integrated with virtual assistive technology as a solution to enhance critical thinking performance in STC. A mixed-method approach combining quantitative and qualitative methods was utilized. An experimental design involving 51 STC at the University of Mataram was conducted, dividing participants into experimental and control groups. The experimental group engaged in learning activities using the hybrid E-PjBL model, while the control group followed traditional teaching methods. Quantitative data were collected through critical thinking skill tests administered pre- and post-intervention, while qualitative data were obtained from observations of learning implementation. Results demonstrated that the hybrid E-PjBL model significantly enhanced critical thinking skills compared to traditional methods. The experimental group’s posttest scores averaged 4.123, significantly higher than the control group’s 2.667. Statistical analysis using ANOVA revealed substantial differences in critical thinking scores between the groups, with an F-value of 99.613 (p < 0.001) for between-subject effects. Furthermore, a significant interaction was observed between test repetition (pretest-posttest) and group (control vs. experimental), with an F-value of 104.205 (p < 0.001). Qualitative findings indicated the model’s practicality, as evidenced by high student participation and engagement. These findings highlight that integrating ethnoscience, project-based learning, and virtual assistive technology offers an innovative and effective pedagogical approach to enhancing the quality of science teacher education. Further research is needed to explore the model's adaptability across diverse educational contexts.
Digital Pedagogical Model Based on Climate Change Issues Integrated with Virtual Reality Technology to Enhance Students' Critical Thinking and Climate Change Awareness Suryati, Suryati; Pangga, Dwi; Habibi, Habibi; Azmi, Irham
International Journal of Ethnoscience and Technology in Education Vol 2, No 1 (2025): March
Publisher : Faculty of Engineering and Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/ijete.v2i1.14054

Abstract

Climate change education is crucial for equipping students to tackle pressing global challenges, yet traditional methods often fail to foster critical thinking (CT) and awareness. This study aimed to develop a digital pedagogical model based on climate change issues integrated with Virtual Reality (VR) technology to enhance students' CT and climate change awareness. The research employed a Research and Development (R&D) approach, involving validation, practicality testing, and effectiveness evaluation. Validity data were obtained through expert validation (involving five validators), while practicality and effectiveness data were gathered through implementation processes involving two observers (evaluating model practicality) and 38 high school students (effectiveness test subjects). Implementation utilized a pretest-posttest design and was analyzed descriptively and quantitatively. The findings indicate that the model is valid, with an average validation score of 4.15, and practical, with an implementation score of 4.80 categorized as "very good." The effectiveness test showed significant improvements in students' CT skills, with the average score increasing from the "less critical" to the "moderately critical" category, and in climate change awareness, which rose from the "moderate" to the "high" category. These results highlight the effectiveness of integrating PBL with VR technology in enhancing students’ CT skills and awareness. This study contributes to advancing technology-based education and emphasizes the importance of adopting immersive, problem-based pedagogies in tackling global issues like climate change.
Pelatihan Penyusunan Alat Peraktikum Sederhana bagi Asisten Laboratorium Fisika Azmi, Irham; Pangga, Dwi; Ahzan, Sukainil; Mirawati, Baiq
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 4 (2024): Oktober-Desember 2024
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i4.10023

Abstract

The "Simple Teaching Aids Design Training" aimed to enhance the competencies of physics laboratory assistants in supporting experiment-based learning, particularly under limited laboratory facility conditions. The training employed In-Service Training (IST) and On-Service Training (OST) methods, involving 10 laboratory assistants from the Physics Education Program at Universitas Pendidikan Mandalika. Evaluation results indicated significant improvements in four main aspects: knowledge, skills, attitudes, and participant satisfaction. The average scores for material mastery reached 3.9 (adequate understanding), skills 3.7 (fairly skilled), attitudes and motivation 4.0 (motivated), and training satisfaction 3.7 (fairly satisfied). This training successfully enabled participants to comprehend basic electronics concepts, design, and utilize simple teaching aids relevant to physics learning. Furthermore, participants’ high motivation reflected the training’s success in encouraging their innovation and creativity. Despite the positive outcomes, there remains room for improvement, including the integration of digital technology in teaching aid design, the provision of more adequate training facilities, and sustainable mentoring programs. This program provides significant contributions to promoting more effective, efficient, and sustainable experiment-based learning while empowering laboratory assistants as learning innovators in higher education environments.
Co-Authors Ahmad Harjono AHMADI Ahzan, Sukainil Alfi, Ahmad Armansyah Armansyah Azmi, Irham Bambang Ferianto Tjahyo Kuntjoro Bilad, Muhammad Roil Chatarina Umbul Wahyuni Dewi, Nurul Yaqin Rusna Fadilah, Himmi Raudatul Febrilia, Baiq Rika Ayu Gummah, Syifaul Habibi Habibi Habibi, H Haerul Pathoni, Haerul Halimatus Sakdiah, Nur I Made Sutajaya I Wayan Suja Ida Bagus Made Astawa Lovy Herayanti Melenia, Melenia Mirawati, Baiq Muliani Muliani, Muliani Nayla, Elma Syafira Nissa, Ita Chairun Prasetya, Dwi Sabda Budi Prayogi, Saiful Putra, Zulfikar Maulana Samsun Hidayat Sanapiah, Sanapiah Suci, Devi Lara Suja, Wayan Sukroyanti, Baiq Azmi Suprianto Suprianto Suryati Suryati Sutajaya, Made Syahrun, Syahrun Wahyudi Wahyudi Wathoni, Muhammad Munawir Yusran Khery, Yusran