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All Journal Jurnal Fisika Unand JOURNAL ONLINE OF PHYSICS COMPTON: Jurnal Ilmiah Pendidikan Fisika International Journal of Hydrological and Environmental for Sustainability Jurnal Pengabdian Masyarakat Pinang Masak
Restianingsih, Tika
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Pelatihan Pembuatan Kit Praktikum Fisika Berbasis Mikrokontroler Arduino Uno di SMK Negeri 9 Muaro Jambi Restianingsih, Tika; Nurhidayah, Nurhidayah; Pebralia, Jesi; Anggraini, Rista Mutia
Jurnal Pengabdian Masyarakat Pinang Masak Vol. 4 No. 2 (2023): Desember 2023
Publisher : Fakultas Sains dan Teknologi, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jpm.v4i2.28797

Abstract

Arduino uno microcontroller is an open source based integrated circuit device that can be easily obtained, relatively cheap, accessible, and low power consumption. It can be applied to design practicum kits related to electronics and electricity. Our community service activity was holding a workshop on making practicum kits based on the Arduino Uno microcontroller for teachers at SMK Negeri 9 Muaro Jambi. The program was carried out through three stages, firstly, observation and survey, next was planning and preparation, and the last one was training. The themes of the chosen practicum kits were the LED turning-on program, distance measuring program, fire detection program, and temperature and humidity measurement. Each of the kits was equipped with the sets needed for practicum, such as Arduino Uno, jumper cables, LEDs, breadboard/protoboard, resistors, USB cables, sensors, etc. The practicum guide book contained the objectives of the practicum, tools and materials used, programming language commands to be uploaded, as well as work steps and evaluations. Workshop was carried out by a lecture about arduino uno microcontroller and demonstration of how to operate practicum kits. During the demonstration activity, the teachers were enthusiastically discussed and asked questions about Arduino Uno microcontroller as a practicum kit.
Thermal Comfort and Airflow in Air-Conditioned Systems: Insights from Computational Fluid Dynamic Simulations Pebralia, Jesi; Aryanti, Yesi; Maulana, Lucky Zaehir; Restianingsih, Tika; Wulandari, Marita
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 2 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i2.768

Abstract

Air conditioning (AC) systems are vital for ensuring thermal comfort in enclosed spaces, particularly in tropical regions like Indonesia, where high temperatures and humidity can challenge human productivity and well-being. This study investigates airflow distribution patterns in air-conditioned rooms using computational fluid dynamics (CFD) simulations, specifically employing the SST k-ω turbulence model. Simulations were conducted in a 3.5 × 3.55 × 3 m closed room with varied inlet temperatures (289.15–297.15 K) and airflow velocities (2–4 m/s). Results indicate that for every 2 K increase in inlet temperature, the average room temperature rises by approximately 1.37 K. Additionally, a 0.5 m/s increment in airflow velocity leads to an average temperature increase of 0.16 K. The airflow was observed to form a dominant jet stream from the AC inlet, flowing diagonally toward the lower part of the room, creating a low-altitude recirculation zone. This phenomenon influences thermal mixing and occupant comfort significantly. Validation of the CFD model revealed its robustness, with an average temperature deviation of 328.15 K and an Nash-Sutcliffe Efficiency (NSE) score of 0.858. Furthermore, the study suggests optimizing AC placement and operation parameters to enhance energy efficiency while maintaining comfort. These findings provide actionable insights into airflow behavior in tropical environments, promoting better design practices for cooling systems, which are crucial for sustainable development and improved living conditions in tropical climates.
ANALISIS STRUKTUR KRISTAL DAN MORFOLOGI NANOKOMPOSIT FE3O4/TIO2 BERBASIS PASIR BESI SUNGAI BATANGHARI Crismeli, Crismeli; Nurhidayah, Nurhidayah; Restianingsih, Tika; Anggraini, Rista Mutia; Deswardani, Frastica
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 2 (2024): JOP (Journal Online of Physics) Vol 9 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i2.29661

Abstract

Abstrak Telah dilakukan penelitian Fe3O4/TiO2 dengan menggunakan variasi perbandingan massa. Nanopartikel Fe3O4 dengan menggunakan metode kopresipitasi dan disintesis dengan TiO2 menggunakan metode solid state reaction. Tujuan dilakukannya penelitian ini mengetahui pengaruh perbandingan massa terhadap pengujian yang dilakukan. Variasi perbandingan massa yang digunakan yaitu 3:1, 2:1, 1:1, 1:2 dan 1:3. Karakterisasi yang dilakukan, adalah X-Ray Diffraction (XRD), Spektrofotometer UV-Vis dan Scanning Electron Microscopy (SEM). Dari hasil XRD diperoleh bahwa penambahan TiO2 tidak menunjukkan perubahan yang signifikan terhadap ukuran kristal dan cenderung didominasi oleh fasa TiO2. Hasil Spektrofotometer UV-Vis nilai energi gap Fe3O4 murni, TiO2 murni dan perbandingan massa 1:1 berturut-turut sebesar 3,67 eV, 3,36 eV dan 3,50 eV. Dapat ditarik kesimpulan bahwa Fe3O4 didoping dengan TiO2 akan diperoleh nilai energi gap Fe3O4/ TiO2 berada diantara energi gap Fe3O4 dengan TiO2. Hasil SEM diperoleh morfologi berbentuk bulat dengan persebaran partikel tidak merata sehingga terjadi aglomerasi. Selain itu, diperoleh ukuran partikel Fe3O4, TiO2 dan perbandingan massa 1:1 dengan ukuran rata-rata partikel berturut-turut sebesar 148,006 nm, 184,72 nm dan 181,79 nm.
MOLECULAR DOCKING SENYAWA (8)-SHOGAOL SEBAGAI OBAT ANTIKANKER Nur Syaqila, Cindy; Pebralia, Jesi; Restianingsih, Tika
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 3 (2024): JOP (Journal Online of Physics) Vol 9 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i3.36116

Abstract

Telah dilaksanakan penelitian tentang lapisan tipis ZnO/asam stearat sebagai material self cleaning. Penelitian diawali dengan proses pembuatan sol ZnO dengan metode sol gel menggunakan bahan zink asetat, etanol dan dietanolamin yang kemudian di lakukan penumbuhan lapisan tipis diatas substrat kaca menggunakan teknik dip coating, diikuti dengan modifikasi permukaan oleh asam stearate dengan berbagai konsentrasi yaitu 0%, 1%, 1,5%, 2%, 2,5% dalam etanol. Sampel yang telah dibuat dilakukan pengujian sudut kontak dan self cleaning, serta dikarakterisasi menggunakan SEM-EDX. Berdasarkan penelitian hasil uji sudut kontak sampel ZS-0% dan ZS-1% menghasilkan sudut kontak < 90O yang berarti memiliki sifat hidrofilik, sedangkan pada sampel ZS-1,5%, ZS-2%, dan ZS-2,5% menghasilkan sudut kontak > 90O yang berarti memiliki sifat hidrofobik. Dimana Pada penelitian ini asam stearat dengan konsentrasi 2% merupakan konsentrasi optimum dengan sudut kontak sebesar 128,969o, ini menunjukkan bahwa ZS-2% memiliki sifat self-cleaning yang baik dibandingkan kaca murni. Berdasarkan hasil SEM-EDX didapatkan morfologi permukaan substrat pada sampel ZS-2% lebih kasar dibandingkan dengan substrat pada sampel ZS-0%. Hasil EDX pada sampel ZS-0% menunjukkan adanya unsur Zinc(Zn), dan oksigen(O), sedangkan pada sampel ZS-2% menunjukkan adanya unsur Zinc(Zn), karbon(C), dan oksigen(O).
Penerapan Model Pembelajaran Berbasis Kasus pada Mata Kuliah Mekanika untuk mendukung Pembelajaran Jarak Jauh Restianingsih, Tika; Nurhidayah, Nurhidayah; Handayani, Linda
COMPTON: Jurnal Ilmiah Pendidikan Fisika Vol 9 No 2 (2022): Compton: Jurnal Ilmiah Pendidikan Fisika
Publisher : Prodi Pendidikan Fisika Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/cjipf.v9i2.12955

Abstract

A case-based learning method has been implemented in the mechanics course. Learning activity is carried out online through the Universitas Jambi e-learning website and Zoom Meeting platform. This method produces learning instruments, namely learning outcomes for graduates of mechanics courses, syllabus and lecture contracts, Semester Lesson Plans, Student Project Task Plans, and Learning Outcomes Assessment Sheets for case-based learning models reviewed. This research was accomplished through the observation and evaluation stages. The observations are carried out by observing the class activities, starting with the stages of finding cases, solving cases, presenting the solved cases in front of the class, and discussing. The results of the student satisfication questionnaire about the learning method used indicate the evaluation stage. The questionnaire results showed that more than 80% of students were satisfied and interested in the case-based learning method.
Ekstraksi dan Karakterisasi Hidroksiapatit (HAp) dari Tulang Ikan Tenggiri (Scomberomorus commersoni) dengan Metode Heat Treatment Purba, Rodearni Ananda Putri; Restianingsih, Tika; Anggraini, Rista Mutia; Fendriani, Yoza; Deswardani, Frastica
Jurnal Fisika Unand Vol 13 No 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.2.247-253.2024

Abstract

Telah dilakukan ekstraksi hidroksiapatit (HAp) dari tulang ikan tenggiri (Scomberomorus commersoni) menggunakan metode heat treatment. Penelitian bertujuan melihat pengaruh suhu yang  diberikan kepada sampel terhadap ukuran kristal dan derajat kristalinitas. Heat treatment dilakukan pada suhu 400OC, 600OC dan 800OC masing-masing selama 3 jam terhadap sampel yang telah di preparasi. Hasil analisis XRD menunjukkan adanya puncak  yang terbentuk pada sudut 2θ 25,950; 31,880; 39,620; 44,410; 46,700; 49,400 untuk suhu 400OC, 31,780; 32,800; 34,610 pada suhu 600OC dan 31,760; 32,210; 32,940; 34,070 pada suhu 800OC yang disesuaikan dengan referensi JCPDS 090432. Pada suhu 400OC, 600OC dan 800OC diperoleh ukuran kristal berturut-turut 12,05 nm, 14,18 nm dan  42,55 nm dan  derajat kristalinitas bernilai 41,91%, 76,38% dan 87,29%. Spektrum FTIR menunjukkan bahwa, semakin tinggi suhu maka lembah yang terbentuk semakin tajam dan adanya gugus fungsi OH-, dan  yang merupakan karakteristik dari gugus fungsi HAp, selain itu muncul pula gugus H2O. Karakterisasi SEM menunjukkan morfologi berbentuk bulk.
Co-Authors Anggraini, Rista Mutia Aryanti, Yesi Crismeli, Crismeli Frastica Deswardani Linda Handayani, Linda Lucky Zaehir Maulana Nur Syaqila, Cindy Nurhidayah Nurhidayah Pebralia, Jesi Purba, Rodearni Ananda Putri Wulandari, Marita Yoza Fendriani