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All Journal IAES International Journal of Robotics and Automation (IJRA) VALENSI Jurnal Neutrino : jurnal fisika dan aplikasinya Erudio: Journal of Educational Innovation SEMIRATA 2015 Jurnal Tadris Kimiya Science and Technology Indonesia Alotrop Jurnal Pendidikan dan Ilmu Kimia JIPF (Jurnal Ilmu Pendidikan Fisika) Momentum: Physics Education Journal AcTion: Aceh Nutrition Journal Science and Physics Education Journal (SPEJ) Indonesian Journal of Chemistry Journal of Science Education Research PENDIPA Journal of Science Education BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Zero : Jurnal Sains, Matematika, dan Terapan JURNAL PENDIDIKAN TAMBUSAI Jurnal Paedagogy Eduproxima : Jurnal Ilmiah Pendidikan IPA Current Research on Biosciences and Biotechnology Hydrogen: Jurnal Kependidikan Kimia Prima Abdika: Jurnal Pengabdian Masyarakat IJORER : International Journal of Recent Educational Research International Journal of Research in Education (IJRE) Jurnal Inovasi Pengabdian Masyarakat Pendidikan Aceh International Journal of Science and Technology Jurnal Ilmu dan Inovasi Fisika Physics and Science Education Journal (PSEJ) Papanda Journal of Mathematics and Sciences Research Aktual : Jurnal Pengabdian Kepada Masyarakat Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Journal of Environment and Sustainability Education Jurnal Penelitian Pendidikan Indonesia Biosaintifika: Journal of Biology & Biology Education al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Perikanan IJIS Edu : Indonesian Journal of Integrated Science Education
M. Lutfi Firdaus
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering 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 Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Optimalisasi Pembelajaran Sains yang Bermakna dan Menyenangkan Pada Masa Pandemi Covid 19 di SMP N 2 Kota Bengkulu Rendy Wikrama Wardana; Muhammad Lutfi Firdaus; Euis Nursaadah; Nensi Pitaloka
Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Vol. 1 No. 1 (2021): ANDROMEDA : Jurnal Pengabdian Masyarakat Rafflesia
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/andromeda.v1i1.19111

Abstract

Tujuan pengabdian pada masyarakat untuk menyajikan materi sains bermakna dan menyenangkan. Materi sains yang dibahas mengenai konep listrik dinamis. Kegiatan dilakukan dalam 2 langkah, yaitu: 1) melakukan eksplorasi pemahaman terkait konsep listrik dinamis, dan 2) melakukan percobaan sederhana untuk mengukur variabel fisis kuat arus, Tegangan dan daya menggunakan pemanfaat sayur dan buah. Materi disampaikan dengan ceramah, diskusi, demonstrasi dan Eksperimen. Peserta berjumlah 16 siswa di SMP N 2 Kota Bengkulu. Kegiatan dilaksanakan di laboratorium SMP N 2 Kota Bengkulu. Instrumen yang digunakan antara lain angket respon siswa terhadap proses pembelajaran. Hasil yang diperoleh dari kegiatan ini antara lain : 1) siswa memperoleh wawasan dan pengetahuan bahwa sayur dan buah dapat menghantarkan arus listrik 2) penguatan konsep Listrik dinamis, dan 3) Siswa termotivasi belajar sains berbasis percobaan. Kesimpulan dari kegiatan ini adalah siswa termotivasi dan menambah pengetahuan dalam belajar sains pada konsep abstrak melalui percobaan sederhana yang bermakna dan menyenangkan
Optimalisasi pembelajaran IPA berbasis Ecovegefruit untuk mengembangkan pengetahuan, keterampilan dan sikap konservasi siswa SMP N 8 Rejang Lebong Rendy Wikrama Wardana; Afrizal Mayub; M Lutfi Firdaus
Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Vol. 2 No. 2 (2022): ANDROMEDA: Jurnal Pengabdian Masyarakat Rafflesia
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/andromeda.v2i2.19340

Abstract

Tujuan pengabdian pada masyarakat adalah untuk memberikan motivasi bagi guru IPA dalam mengembangkan bahan ajar berbasis lingkungan melalui Ecovegefruit dan eksperimen dalam mengatasi permasalahan terkait terbatasnya alat dan bahan kegiatan praktikum IPA di sekolah. Kegiatan dilakukan melalui tiga langkah, yakni: 1) Praktikum sederhana mengenai Ecoenzym, 2) Praktikum sederhana mengenai daya hantarb listrik oleh bahan Ecovegefruit, dan 3) menggali Respon siswa terhadap kegiatan pembelajaran yang telah dilakukan. Materi disampaikan melalui ceramah, diskusi, demonstrasi dan Eksperimen sederhana. Peserta kegiatan berjumlah 16 siswa di SMP N 8 Rejang Lebong. Kegiatan dilaksanakan di salah satu kelas VIII SMP N 8 Rejang Lebong. Instrumen yang digunakan antara lain Panduan praktikum dan angket respon siswa terhadap proses pembelajaran. Hasil yang diperoleh dari kegiatan ini adalah pembelajaran sains yang bermakna, berbasis fenomena, berwawasan lingkungan dan konservasi dapat meningkatkan pemahaman, keterampilan dan sikap siswa dalam mempelajari sains. Pemanfaatan limbah sayur dan buah tentunya dapat dimanfaatkan baik sebagai cairan organik yang kaya manfaat (Ecoenzym) maupun sebagai sumber energi alternatif bio Energi listrik. Respon siswa selama mengikuti kegiatan menunjukkan sikap positif yang terlihat dari interaksi dan keaktifan siswa dalam mempraktikan maupun kreatifitas dalam menggunakan alat. Hal tersebut menunjukkan bahwa pengemasan konten yang berbasis lingkungan dan konservasi dapat memberikan makna dan kebermanfaatan bagi siswa dalam belajar sains.
Pembuatan Nanopartikel Perak yang Ramah Lingkungan Beserta Aplikasinya untuk Mendeteksi Ion Merkuri Secara Citra Digital M. Lutfi Firdaus; Hadi Apriyonda; Elvinawati Elvinawati; Eko Swistoro; Agus Sundaryono
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 6, No 2 (2019): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v6i2.6487

Abstract

Dewasa ini, nanopartikel mendapatkan perhatian istimewa di kalangan para peneliti termasuk pemerhati lingkungan karena nanopartikel memiliki luas permukaan yang sangat besar sehingga bisa dimanfaatkan lebih lanjut untuk berbagai keperluan. Penelitian ini bertujuan untuk membuat nanopartikel perak secara biosintesis menggunakan ekstrak buah anggur beserta aplikasinya sebagai pereaksi dalam mendeteksi logam berat berbahaya, khususnya merkuri (II). Buah anggur diekstraksi menggunakan air pada suhu 80°C. Setelah dicampur dengan prekursor perak nitrat, reaksi pembentukan nanopartikel perak dipercepat dengan memanfaatkan sinar matahari sebagai energi panas alami. Nanopartikel perak yang terbentuk memiliki puncak absorbansi pada panjang gelombang maksimum 420 nm, dan selektif terhadap ion merkuri (II), yang ditandai dengan berubahnya warna nanopartikel perak tersebut dari coklat kekuningan menjadi bening. Selanjutnya, kamera digital dimanfaatkan untuk menganalisis konsentrasi ion merkuri di dalam sampel. Keakuratan metode citra digital ditentukan dengan membandingkan hasil pengukurannya terhadap metode Spektrofotometri UV-Vis. Secara umum, metode citra digital dengan nanopartikel perak sebagai reagen deteksi ion merkuri dapat digunakan dengan kinerja mumpuni. Konsentrasi ion Hg (II) dari sampel lingkungan yang dianalisis menggunakan metode yang dikembangkan ini berada di bawah ambang batas yang diperbolehkan oleh Permenkes RI No. 492 tahun 2010, sehingga air lingkungan yang dianalisis masih layak dipergunakan untuk kebutuhan rumah tangga.
The Pengembangan E-Modul Sintesis Metal Organic Frameworks Cu-BDC Sebagai Adsorben Zat Warna Berbasis Problem Based Learning Untuk Meningkatkan Literasi Sains Mahasiswa Septika Amalia Umaro; Sura Menda Ginting; M. Lutfi Firdaus
PendIPA Journal of Science Education Vol 8 No 1 (2024): February
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.1.108-113

Abstract

This research aimed to analyze the feasibility of an e-module with the topic of synthesis of Metal Organic Frameworks (MOFs) Cu-BDC as adsorbents for Congo red and Metanil yellow dyes, as well as to analyze the improvement of students' scientific literacy after the implementation of a Problem Based Learning-based e-module in the material chemistry course using a Telegram bot application. The research method used was research and development with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). Data collection techniques included observation, tests, and questionnaires. The research instruments consisted of test sheets and questionnaires that have been validated by experts. Data analysis technique used was quantitative analysis. Based on the validation results of the e-module by content experts, a score of 93.17% was obtained, media experts 95.8%, test validation results 88.75%, and student response questionnaire validation results 92.6%. Overall, it can be concluded that the validation results of the e-module fall under the category of very feasible. The student response questionnaire towards the e-module resulted in a score of 95% with a category of very feasible. The n-gain result obtained after the application of the e-module in the material chemistry course is 0.67 with moderate criteria. In conclusion, the e-module with the topic of synthesis of MOFs Cu-BDC as adsorbents for Congo red and Metanil yellow dyes using Problem Based Learning model and Telegram bot application is highly suitable for use as an alternative teaching material in the material chemistry learning process and can improve students' scientific literacy.
Applying PhET Interactive Simulations Media With A Guided Investigation Approach to Improve Student’s Critical Thinking Skills Yunitasari, Yunitasari; Firdaus, M. Lutfi; Wardana, Rendy Wikrama; Putra, Syalendra
International Journal of Research in Education Vol 4, No 1 (2024): Issued in January 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijre.v4i1.17327

Abstract

The purpose of this research is implementation PhET Interactive Simulations Media with a Guided Inquiry Approach to Improve Students' Critical Thinking Skills" based on the description provided above. Physics Educational Technology (PhET) simulations is the virtual laboratory makes use of practical simulation principles to carry out engaging learning. By using an inquiry-based learning approach, students are trained to formulate problems, generate hypotheses, conduct experiments, gather data, analyze data, write and describe theories, and honestly follow rules so that the actions of the offenders mirror those of scientists. This study method is quasi-experimental, because it uses a guided inquiry learning strategy to assess how critical thinking abilities are improved when learning the pH of acid and base solutions. The study's conclusion is combining PhET Interactive Simulations media with a guided inquiry approach, the average learning outcomes are higher than when using a conventional learning.
Assembling, simulating, and recording robot videos as an effort to motivate middle school students and teachers of Science in Bengkulu Province Mayub, Afrizal; Fahmizal, Fahmizal; Firdaus, M. Lutfi; Johan, Henny; Ruyani, Aceng; Karyadi, Bhakti
IAES International Journal of Robotics and Automation (IJRA) Vol 12, No 2: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijra.v12i2.pp146-156

Abstract

The aim of this study was to determine the motivation of science teachers and students towards science after participating in the activity of assembling, simulating, and recording line follower robots as an effort to motivate middle school students and teachers towards science in Bengkulu Province. The research was done by direct practicing, where 60 students and 15 teachers of three junior high school (SMP): SMP Negeri 06 Seluma, SMP Negeri 02 Kota Bengkulu, and SMP Negeri 8 Rejang Lebong, were involved as the research subjects. The research activity concluded that the schools are ready to prepare simple electronics/robot laboratories for the three research subjects and the science teachers and students were motivated to learn science. It was seen from the score of 3.95 (scale of 1 to 5) for students, and for the science teacher, the score was 3.83 (scale of 1 to 5). The science teachers will follow up on robotics activities so that students will be interested in learning science at home and school.
Box-Behnken Experimental Design for Electrochemical Aptasensor Optimization on Screen Printed Carbon Electrode/Silica-Ceria Zakiyyah, Salma Nur; Eddy, Diana Rakhmawaty; Firdaus, Muhammad Lutfi; Subroto, Toto; Hartati, Yeni Wahyuni
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 9, No. 1, May 2023
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v9i1.27493

Abstract

This study aims to optimize the epithelial sodium channel (ENaC) electrochemical aptasensor with the Box-Behnken experimental design. ENaC is a protein that plays a role in sodium ion transport in several epithelial tissues and is associated with hypertension. The ENaC protein aptamer is held in place in the electrochemical aptasensor by a modified screen-printed carbon electrode (SPCE) of silica-ceria composite (SiO2-CeO2). The unique structure of a silica matrix with high biocompatibility can form composites through a hydrothermal process. The Box-Behnken (BBD) experimental design is an efficient optimization method of factors that affect the experiment at three levels. The FTIR results of the silica-ceria composites were 549.35 cm-1 (Ce-O), 1095.3 cm-1 (Si-O-Si), and 491.28 cm-1 (Si-O). Meanwhile, SPCE/silica-ceria characterized by differential pulse voltammetry (DPV) showed an increase in peak current [Fe(CN)6]3-/4- from 3.190 μA to 9.073 μA. Three experimental factors, aptamer concentration, streptavidin incubation time, and aptamer incubation time, were optimized with BBD and obtained at 0.5 μg.mL-1, 30 minutes, and 1 hour. The optimum conditions observed resulted in a selective current response for ENaC protein detection. The optimization results can be applied to aptamer-based ENaC protein detection in samples.
Biosynthesis of Gold Nanoparticles Using Wuluh Star Fruit (Averrhoa bilimbi) for Chromium Analysis Dewi, Ria Kemala; Firdaus, M. Lutfi; Nursa'adah, Euis
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10188

Abstract

One of the heavy metals that can pollute waters is the heavy metal chromium (Cr). Chromium has many important roles in life. Chromium material is widely used by humans for various purposes, especially in the industrial world. However, the large number of uses of chromium in the industrial world and the waste it generates can have a negative impact on the environment and human health. One way to deal with chromium pollution is by analyzing the presence of chromium in waters. The aim of this research is to analyze the presence of chromium using a simple, effective, economical and accurate method, namely the biosynthesis of gold nanoparticles using samples of starfruit (Averrhoa bilimbi) as a bioreductor rich in ascorbic acid, with a colorimetric method, namely a method based on the aggregation of gold nanoparticles with ascorbic acid from starfruit, which causes a shift in plasmons and causes color changes that can be seen by the eye. Based on the analysis results, data was obtained that gold nanoparticles synthesized from the starfruit bioreductor can detect chromium with a concentration of 10 ppm with optimum conditions at pH 5, temperature 75oC, optimum incubation time of 5 minutes and gold nanoparticles are selective and sensitive for detecting chromium.
DESKRIPSI ANALISIS KEBUTUHAN MEDIA PEMBELAJARAN IPA KELAS VII MTsN 1 SELUMA Junaini, Junaini; Nursaadah, Euis; Firdaus, M. Lutfi
PendIPA Journal of Science Education Vol 8 No 2 (2024): June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.2.121-125

Abstract

The aim of this research was to analyze the needs of students in science learning at MTsN 1 Seluma, Bengkulu. The method used was a survey via questionnaire with 9 questions given to 30 class VII students. The survey results show that 100% of students have textbooks/handbooks, 100% have smartphones, 93% have difficulty studying material that only comes from books, so 100% of students look for other materials besides books from school to help understand the material. science via the internet, therefore 100% of students need interesting alternative learning media. In science learning, students agree that there is Android-based learning media for science material, especially environmental pollution material. Students want learning to be adapted to current developments and technology, interesting, interactive, and can be accessed anytime and anywhere via smartphone. Implementation of media in the form of Android-based applications can be an alternative to empower students' use of technology and to improve the quality of science learning.
The Use of Telang Flower Extract (Clitoria ternatea L.) as a Natural Universal pH Indicator coupled with Digital Image Colorimetry Esterlin; Nursaadah, Euis; Wardana, Rendy W.; Firdaus, M. Lutfi
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.480-487

Abstract

The acid base indicators commonly used by scientists are mostly synthetic indicators that are harmful for the environment.Moreover, chemists need various chemicals to detect broad pH ranges for acid and base samples solution.  The aim of this research was to create a natural universal pH indicator from telang flower (Clitoria ternatea L.) extract coupled with the digital image detection. The universal pH indicator is very important in education chemistry that broadly used for titration and other class room chemical experiments. This process of making a natural universal pH indicator integrated with digital images meets green chemistry criteria that use environmentally friendly materials and technology. The results show that color absorption data at pH 1-2 are purple, pH 3-5 are violet, pH 6-10 are blue, pH 11-12 are green and pH 13-14 are yellow. RGB intensity digital image data shows the intensity of the red color increases in the pH range 6-11, while the intensity of the green and blue colors tends to be stable. The proposed method was validated using a UV-Vis spectrophotometer and conventional pH meter that give the comparable results.
Co-Authors Abd. Rasyid Syamsuri Aceng Ruyani Aceng Ruyani ACENG RUYANI Aceng Wikrama Ruyani Adella Mulia Ramadhani Afrizal Mayub Afrizal Mayub Agus Sudaryono Ahmad Amin Ahmad Walid Angga Aprian Dinata Anggraini, Yestilia Anni Anggraeni, Anni Annisa Luthfiah Annisa Luthfiah Areski Febriani Ariefa Primair Yani Arsela Eko Listiono Azvadennys Vasiguhamiaz BHAKTI KARYADI Budiyanto Budiyanto Deshinta Arrova Dewi Dewi Handayani Dewi, Ria Kemala Diana R. Eddy Diana Rakhmawaty Eddy Dina Maryani Dinda Oktarina Diya Novarina Dwi Alfina Septianingsih Edo Prasetia Edwin Saputra Efa Susanti Eko Swistoro Eko Swistoro Eko Swistoro Eko Swistoro Elsi Adelia Fitri Elvinawati Elvinawati Elvinawati Elvinawati Elza Heryensi Elza Heryensi Elza Heryensi Endang Suswati Endang Widi Winarni Endang Widi Winarni Endang Widi Winarni Endang Widi Winarni Esterlin Euis Wikrama Nursa’adah Fahmizal Fahmizal Fahmizal, Fahmizal Farid, Muchammad Firdha Iresta Wardani Firdha Iresta Wardani Firmanul Catur Wibowo Fitri April Yanti Fitri April Yanti Fitri April Yanti Fitri April Yanti, Fitri April Ghufira Ghufira Hadi Apriyoanda Hadi Apriyonda Hayuni Retno Widarti Hendrati, Diana Hendry Nordan Henny Johan Henny Johan Hermansyah Amir Hizkia Mahezra Agustin Ilahi, Fitratul Iman Rahayu Iwan Setiawan Iwan Setiawan Junaini, Junaini Khairul Hidayah Khanna Hadirama Lazfihma Lazfihma Lena Rahmidar Liana, Mutia M. Diki Permana Mardhotillah, Yulia Marti Hitsmi Mayub, Afrizal Megasari Megasari Melda Nuari Handini Melfi Puspita Muhamad Allan Serunting Muhamad Diki Permana Mukti Dono Wilopo Mukti Dono Wilopo Mukti Dono Wilopo Mutia Liana Muzanip Alperi Nensi Pitaloka Nessi Meileza Nina Gusti Nirwana Nirwana Noli Krisnanto Noorzana Khamis Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nursaadah, Euis Nurul Auliany Pradipta, Andika Purwanti Widhy Hastuti Purwo Ismaya Sari Putra, Syalendra Putri Anjarsari Putri Nutriastuti Putri Ramadan Lazuardi Renaldi Adriansyah Rendy W Wardhana Rendy W. Wardana Rendy Wikrama Wardana Rendy Wikrama Wardana Rendy Wikrama Wardana Rensy Aula Sari Ria Aprilia Rima Mayesmy H. Rina Elvia, Rina Rince Anugrah Ilahi Rini Surbakti Rini Wulandari Riska Marwanti Rizki M. Okumura Ronald Muhammad Rosane Medriati Rotami, Ladya Salma Nur Zakiyyah Samitra, Dian Santhy Wyantuti Sasti Yuliafitri Septika Amalia Umaro Septika Amalia Umaro Shabarni Gaffar Siti Zaya Aisyahlika Somantri, Manap Somantri, Manap Soraya Nur Ishmah Suherman Suherman Suherman, Suherman Sumpono Sumpono Sura Menda Ginting Suryati Suzieleez Syrene Binti Abdul Rahim Syahra Khairunnisa Syahra Khairunnisa Tiara Dia Amanda Toto Subroto Tria Wulandari Umaya Umaya, Umaya Ummu Aiman Vazella Lavenia Lorenza Walid, Ahmad Wangi Pusva K. Wardana, Rendy W. Wardana, Rendy Wikrama Wiwit Alwi Yar Johan Yar Johan Yeni Wahyuni Hartati Yestilia Anggraini Yestilia Anggraini Yosie Andriani Yuni Krisnawati Yunitasari Yunitasari, Yunitasari Yusi Deawati Zakiyyah, Salma Nur Zico Fakhrur Rozi Zulkarnain Zulkarnain Zulkarnain Zulkarnain