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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) WAPFI (Wahana Pendidikan Fisika) Jurnal Pengajaran MIPA JURNAL FISIKA Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI PENA SAINS Journal of Teaching and Learning Physics Jurnal Inovasi dan Pembelajaran Fisika Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Pendidikan Fisika Indonesian Journal of Science and Mathematics Education Journal of Science Learning Jurnal Pendidikan Fisika dan Keilmuan (JPFK) PENDIPA Journal of Science Education Jurnal Kajian Peradaban Islam Silampari Jurnal Pendidikan Ilmu Fisika Indonesian Review of Physics (IRiP) Physics Education Research Journal Didaktika: Jurnal Kependidikan Jurnal Kajian Peradaban Islam INSECTA: Integrative Science Education and Teaching Activity Journal Indonesian Journal of Multidiciplinary Research (IJoMR) Indonesian Journal of Teaching in Science Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Pendikdas: Jurnal Pendidikan Dasar JSEP (Journal of Science Education and Practice) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Proceeding Seminar Nasional IPA JIPI (Jurnal IPA dan Pembelajaran IPA) International Journal of Renewable Energy Development Symbiotic: Journal of Biological Education and Science Journal of Environment and Sustainability Education Journal of Innovative Science Education Jurnal Pendidikan IPA Indonesia Jurnal Pendidikan MIPA JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Pendidikan Fisika Indonesia IJIS Edu : Indonesian Journal of Integrated Science Education
Eka Cahya Prima
Universitas Pendidikan Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Unveiling Heat and Temperature Misconceptions: A Multilocation Study on First-Year College Students in Indonesia Muliyani, Riski; Suhandi, Andi; Prima, Eka Cahya; Muslim, Muslim
Jurnal Ilmiah Pendidikan Fisika Vol 8, No 3 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v8i3.13278

Abstract

This study aims to identify misconceptions experienced by first-year university students regarding the concepts of temperature and heat. This research applied a descriptive research design. The sample consisted of 224 first-year students from public and private universities in Singkawang, Bima, Madiun, and the Sumedang, Sintang, and Bandung regencies. The instruments used were adopted from two previous studies and validated by experts. The test reliability results were 0.73 and 0.75, indicating a high level of reliability. Data were collected via Google Forms, using questionnaires and a four-tier test as the instruments. The findings indicated that the highest percentage of misconceptions among students occurred in the sub-topic “Temperature will continue to rise as long as the fire remains on while boiling water,” with 63% of students displaying this misconception. The lowest misconception occurred in the sub-topic “Water at 0°C has entirely turned into ice,” with 40.6% of students holding this misconception. It is hoped that these findings can be utilized by lecturers and teachers to address the sub-topics of temperature and heat, which are known to harbor numerous potential misconceptions. Consequently, lecturers can employ effective teaching strategies to address students’ misunderstandings regarding temperature and heat.
GREEN CHEMISTRY IN ACTION: DEVELOPING AND IMPLEMENTING A BIODEGRADABLE MATERIAL EXPERIMENT IN SENIOR HIGH SCHOOL SETTINGS Sholahudin, Nabila Putri; Riandi, Riandi; Prima, Eka Cahya
INSECTA: Integrative Science Education and Teaching Activity Journal Vol. 5 No. 2 (2024)
Publisher : Science Education, Institut Agama Islam Negeri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21154/insecta.v5i2.8725

Abstract

Teaching senior high school students green chemistry can contribute to future scientists and professionals who are responsible for safer, less hazardous chemistry. Plastic, known for its durability, affordability, and lightweight properties, is integral to daily life across industries, including housing, healthcare, fashion, sports, and transportation. However, the plastic industry poses significant economic and environmental challenges, raising concerns about its sustainability. To address these issues, this research focuses on the transformation of orange peel waste into a fine powder to develop a biobased, biodegradable plastic. The study conducted a soil burial test over a continuous 14-day period, revealing that an increased quantity of orange peel powder positively influenced the biodegradability of the bioplastic. Enhanced biodegradation was observed with higher concentrations of orange peel. The implementation of bioplastic experiments in the classroom received positive feedback from students, as evidenced by high ratings across various statements. Overall, the findings suggest that the experiments were not only engaging but also effective in shaping students' perspectives on plastic and science.
Unveiling Misconceptions: A Multilocation Study on First-Year College Students in Indonesia Muliyani, Riski; Suhandi, Andi; Prima, Eka Cahya; Muslim, Muslim
Journal of Teaching and Learning Physics Vol 9, No 2 (2024): Journal of Teaching and Learning Physics (September 2024)
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jotalp.v9i2.34844

Abstract

The aim of this research is to determine whether there are any misconceptions among first-year students regarding the concepts of heat and temperature. This study employs a descriptive research design. The sample used in this study consists of 224 first-year students from both public and private universities in the cities of Singkawang, Bima, Madiun, and the districts of Sumedang, Sintang, and Bandung. Data were collected through a g-form using a four-tier test instrument. The research results indicate that the percentage of misconceptions among students on the concepts of temperature and heat is highest in the sub-topic "Objects with higher temperature definitely have more heat content compared to objects with lower temperature," reaching 62.1%, and the lowest misconception in the sub-topic "Water at a temperature of 0°C has entirely turned into ice," reaching 40.6%. It is hoped that these findings can be utilized by lecturers and teachers in addressing the subtopic of heat and temperature, which is known to have many possible misconceptions. As a result, educators can employ effective instructional strategies to address their students' misunderstandings about heat and temperature
Review Penggunaan Reduced Graphene Oxide/TiO2 sebagai Fotoelektrode pada Dye-Sensitized Solar Cell Prima, Eka Cahya; Utami, Meilisyah Putri; Setiawan, Andhy; Suhendi, Endi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 6 No. 1 (2022): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v6i1.1146

Abstract

Many studies on graphene applied to DSSC have been carried out with the aim of increasing the efficiency of power conversion in organic solar cells. This research was conducted to find the best composition of soar cells so that they can be utilized and converted into electrical energy. The use of graphene as a photoanode can increase the conversion efficiency along with good electrical conductivity values in graphene. This review aims to analyze the process of increasing power conversion efficiency in DSSC caused by the addition of graphene to TiO2 which acts as a photoanode in DSSC during the last five years. The results of the measurement of DSSC efficiency increased when the addition of reduced graphene oxide to TiO2 was carried out.
Review Metode Deposisi Elektrokimia Cu2ZnSnS4 sebagai Lapisan Absorber Sel Surya Lapisan Tipis Hanifa, Husna; Prima, Eka Cahya; Suhendi, Endi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 8 No. 1 (2024): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v8i1.1766

Abstract

Cu2ZnSnS4 is a low-cost and environmentally friendly thin layer solar cell absorber material. The electrochemical deposition method is intended to study because it enables producing films with high homogeneity based on solution precursors. This research review focuses on examining the CZTS electrochemical deposition method in order to identify the effect of the sulfurization process (sulfurization temperature and time) so that the best electrochemical deposition process can be identified for future work of high-efficiency CZTS thin layer solar cell fabrication based on solution precursor. The results show that the Cu2ZnSnS4 layer deposited through the electrochemical method has a 1.4-1.6 eV bandgap range. The etching process to post-annealing 0.1M KCN is crucial to effectively and selectively remove CuS, ZnS, and Cu6Sn5 secondary phases.
Validasi Metode Analisis Konsentrasi Larutan Kopi berdasarkan Spektroskopi Absorpsi Cahaya Fajri, Nurullina; Prima, Eka Cahya; Riandi, Riandi; Sriyati, Siti
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 8 No. 1 (2024): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v8i1.2101

Abstract

This research aims to validate the method of analyzing the concentration of coffee solution by measuring light absorbance using simple spectrophotometry. Spectrophotometry is a technique that utilizes the interaction between visible light and electromagnetic waves on a substance. Measurement of the absorbency of the coffee was carried out by making five samples of coffee solution with different concentrations, namely 100 ppm, 160 ppm, 200 ppm, 350 ppm and 400 ppm. Absorbance measurements were carried out at visible light wavelengths (380 750 nm). The validation of the coffee has good linearity with a correlation coefficient of 0.9818; 0.9902 and 0.9788. The average precision value for the three treatments was 0.0056% with a Limit of Detection (LOD) and Limit of Quantitation (LOQ) of 115 ppm and 383.33 ppm for (  405 nm 10); 44 ppm and 146.67 ppm for ( 532 nm 10); 70.2 ppm and 234 ppm for (  650 nm 10). This indicates that the validation result of absorbance analytical method of the coffee, using simple spectrophotometry is not different from the standard measurement.
Pengaruh Ketebalan Lapisan Tipis ZnO terhadap Kinerja Sel Surya Perovskit Fleksibel Ekarani, Putri; Prima, Eka Cahya; Rusdiana, Dadi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 7 No. 2 (2023): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v7i2.2692

Abstract

Photoelectrode preparation that requires high heating temperatures will hinder the future development of PSCs on flexible plastic substrates. Therefore, ZnO is a viable alternative for flexible PSCs because it can be processed at low temperatures. This research focuses on the influence of ZnO photoelectrode layer thickness on the optical properties and performance of PSCs. The transmittance of ZnO thin films was found to be more than 50% in each sample. In addition, the bandgap obtained ranged from 3.12 to 3.20 eV. The efficiency results are 0.90×10-5% at a thickness of 10 µm, 1.09×10-5% at a thickness of 8 µm, 2.68×10-5% at a thickness of 6 µm, and the best efficiency is 4.31×10-5% at 4 µm thickness. Based on the results of research that has been carried out, reducing the thickness of the ZnO photoelectrode layer can increase the transmittance and efficiency of solar cells so that solar cell performance increases.
Analysis of Attitude Toward Science on Junior High School Students: A Survey Research Muji Pangesti Prihandini; Nanang Winarno; Eka Cahya Prima; Ratna Ekawati
Didaktika: Jurnal Kependidikan Vol. 13 No. 4 Nopember (2024): Didaktika Jurnal Kependidikan
Publisher : South Sulawesi Education Development (SSED)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58230/27454312.978

Abstract

Attitude towards science is one factor that influences student achievement in science learning. Attitude toward science is essential for students, unfortunately, attitude toward science will decrease as the student's grade increases. This research analyzed the attitudes towards Science of Junior High School Students in Indonesia. This research used a survey method. The participants were 1070 junior high school students in Indonesia. The instrument used is a questionnaire and open-ended questions. questionnaire including 40 multiple-choice questions with 4 dimensions. The findings showed the average attitude toward school science (3.18), desire to become a scientist (2.67), the value of science to society (3.60), and perception on scientists (2.89). The average obtained from the four dimensions is (3.08) which means the level of agreement of the student is moderate. Open-ended questions corroborated these results, explaining why students like and do not like science. The three most common reasons students like science are because learning science is fun, studying science will increase knowledge, and often doing experiments. The three most common reasons students don't like science are because science is difficult, has many formulas, and makes them dizzy. The research results show that the average score of students' attitudes toward science is moderate, so teachers are expected to use varied learning models to improve students' attitudes toward science.
Pengujian Efikasi Antimikroba Ekoenzim terhadap Staphylococcus aureus dan Escherichia coli sebagai Aktivitas Partisipatif Siswa dalam Materi Bioteknologi untuk Pengelolaan Limbah Makanan Fina Nurul Arifah; Eka Cahya Prima
Symbiotic: Journal of Biological Education and Science Vol. 6 No. 1 (2025): Symbiotic: Journal of Biological Education and Science Vol. 6 No. 1 April 2025
Publisher : Institut Agama Islam Negeri Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/symbiotic.v6i1.156

Abstract

This study investigates the antimicrobial efficacy of eco-enzymes derived from organic waste, specifically fruit and vegetable peels, against Escherichia coli and Staphylococcus aureus bacteria. Eco-enzymes were produced through a simple fermentation process involving kitchen scraps, brown sugar, and water. Antibacterial activity was evaluated using agar diffusion assays, where different concentrations of eco-enzymes were tested against bacterial cultures. Results showed significant inhibition zones, indicating effective antimicrobial properties against both bacterial strains. Higher concentrations of eco-enzymes correlated with larger inhibition zones, highlighting their potential as natural alternatives for bacterial control in various applications, including food processing and wastewater treatment. Furthermore, eco-enzymes contribute to sustainable organic waste management by converting waste into useful bio-sanitizers, floor cleaners, bio-pesticides, and plant fertilizers. This research underscores the dual benefits of eco-enzymes in reducing environmental impact and promoting sustainable development goals.
Natural pigment-based dye-sensitized solar cells utilizing Caulerpa racemose and Gymnogongrus flabelliformis as photosensitizers Unwakoly, Semuel; Liliasari, Liliasari; Hartati, Sri; Munawaroh, Heli Siti H; Arramel, Arramel; Rusliani, Prima Fitri; Prima, Eka Cahya
International Journal of Renewable Energy Development Vol 14, No 3 (2025): May 2025
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.61083

Abstract

This research examines natural dyes' chemical and physical characteristics for potential use in dye-sensitized solar cells (DSSCs). Chlorophyll pigments were extracted from two macroalgae species, Caulerpa racemosa and Gymnogongrus flabelliformis, and analyzed using absorbance spectroscopy, band gap energy calculations, and dye-sensitized solar cell performance evaluation. Fourier Transform Infrared (FTIR) characterisation was used to identify the pigments contained in the dye. The absorbance spectra of chlorophyll pigments extracted from both macroalgae species showed broad peaks at 400–800 nm wavelengths, with Gymnogongrus flabelliformis showing the highest absorbance peak at 403 nm. The redox potential analysis for both macroalgae species showed energy gaps (HOMO/LUMO) of 1.3 eV, 1.4 eV, 2.3 eV, and 2.4 eV, respectively, indicating that these natural dyes are suitable for use in DSSC applications. DSSC devices were fabricated using components such as liquid electrolyte, mesoporous titanium dioxide (TiO₂) photoelectrode, reduced graphene oxide (rGO) as counter electrode, and ITO glass as conductive substrate. Meanwhile, to evaluate how well the photovoltaic system worked, we looked at short-circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF), and overall photoelectric conversion efficiency (η). The results showed that the highest performance for Gymnogongrus flabelliformis was Jsc 0.041 mA/cm², Voc 0.28 V, FF 0.239, and η 0.020%, while the highest performance of Caulerpa racemosa was Jsc 0.023 mA/cm², Voc 0.46 V, FF 0.244, and η 0.019%. These findings indicate the potential for using and developing natural dyes derived from these two macroalgae species in DSSC technology. This research offers insight into the feasibility of marine-derived pigments as a sustainable and environmentally friendly alternative for photovoltaic applications.
Co-Authors 'Ain, Khaula Noorul A Z Y Muntaz A. Suhandi Abi Sofyan Adhara Jasid Adi Rahmat Agus Fany Chandra Wijaya, Agus Fany Chandra Agus Setiabudi Ahmad Sugiana Ahmad, Nur Jahan Ainun Jariah Aldia Ridwani Putri Amadudin, Muhamad Nur Yasin Amaira Utami Amri, Muhammad Fahriza Andhy Setiawan Anggun Zuhaida, Anggun Angjelina, Putri Anisa Rahmawati Ari Widodo Ari Widodo Arifah, Fina Nurul Arramel, Arramel Ashidiq, Rizki Maulana Astuti, Lia Azhari Ebeid Abu elreish Budiatin, Aniek Setiya Chun-Yen Chang Destanto, Nady Artan Diah Wahyuni Dian Regita Cahyani Diana Maulidia Diana Rochintaniawati Duden Saepuzaman, Duden Dwiyanti, Ulfa E. Suhendi Ekarani, Putri Eliyawati , E. Eliyawati Eliyawati Endi Suhendi F Muslihah Fadzil, Hidayah Mohd Fahmi Amhar Fajar, Muhammad Cahyana Bintang Fajarwati, Andini Fajri, Nurullina Farhan Farhan Fathurrohman, Irfan Febrian Virijai Fina Nurul Arifah G S A Muharam Ghena Akmalia Insani Hadjar, Azzahra Siti Hanifa, Husna Hasanah Purnama, Aisyah Nurul Herdianto, Nendar HERNANI - Ida Kaniawati Inandang, Siska Handayani Irfan Fathurrohman Isnawati Isnawati Kurniawan, Luthfiyah Azzahra L A Kurniawan Labibah, Haura Laelandi, Rahayu Lastama Sinaga Lestari, Nimas Ayu Liliasari , Lilik Hasanah Lilit Rusyati Lutianasari, Lia M F Ulfi Meilisyah Putri Utami Melati, Putri Sekar Mellyzar, Mellyzar Mohamad, Maslawati Mr Sjaeful Anwar Muamar, Aina Salsabila Muhamad Gina Nugraha Muhammad Nurul Hana Muharam, Ghevira Syaharani Aulia Muji Pangesti Prihandini Mukti, Rizka Nurfarida Munawaroh, Heli Siti H Muslim Muslim Nabilah, Shofa Nahadi Nanang Winarno Naufal Rabah Wahidin Nuraeni Kamdi Nurahman, Arip Nurjannah Hanum Mahmudah Siagian Nurpratiwi, Febrianty Nurul Azizah Al Mar'ati Nuryani Rustaman Parlindungan Sinaga Pramita Sylvia Dewi Putri Angjelina Putri Sekar Melati R. Riandi, R. Rastiadi, Hasna Aisyah Ratna Ekawati Riandi Riandi Riandi Riandi Riandi Riandi Riandi Riandi Ridwan Ridwan Rika Rafikah Agustin Rini Solihat Riski Muliyani Riski Muliyani, Riski Risnawati, Ika Rizki Maulana Ashidiq Rozi, Muhammad Fahru Rusliani, Prima Fitri Saeful Karim Sahidin Sahidin Salma Almira Hamdani Salsabilla, Adinda Saputra, Winata Tegar Selly Feranie Semuel Unwakoly Septiyanto, Arifin Setiya Utari Setiya Utari Sholahudin, Nabila Putri Sihombing, Dewa Alvario Siti Sriyati Siti Sriyati Sjaeful Anwar Sri Astuti Sri Hartati Sumardani, Nur Ichsan Taj Rosyidah Ulfa Dwiyanti Utami, Meilisyah Putri W T Saputra W Widia Warliani, Resti Wihardi, Yaya Wilman Septina Yulianita Nursakinah Yulianti, Lisna Zahra Raudi Maulidia