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All Journal EKSAKTA: Journal of Sciences and Data Analysis POSITRON Biosfer: Jurnal Tadris Biologi Techno: Jurnal Penelitian Edu Sains: Jurnal Pendidikan Sains dan Matematika IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Al Ishlah Jurnal Pendidikan Jurnal Penelitian Sains Jurnal Redoks JURNAL PENDIDIKAN TAMBUSAI Aptisi Transactions on Technopreneurship (ATT) Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika Kinetika Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Teknologi International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Chemical Engineering Journal Storage (CEJS) Proceeding ISETH (International Summit on Science, Technology, and Humanity) Internet of Things and Artificial Intelligence Journal Innovative: Journal Of Social Science Research Bioedunis Journal International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Applied Engineering, Innovation, and Technology Journal of Experimental and Applied Physics Journal of The Physical Society of Indonesia
Yohandri Bow
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Design and Implementation of an IoT-Based Intravenous Infusion Monitoring System Using Wireless Sensor Network Afrianda, Teguh; Yulkifli, Yulkifli; Yohandri, Yohandri; Asman, Aulia
Applied Engineering, Innovation, and Technology Vol. 1 No. 2 (2024)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/aeit.v1i2.25

Abstract

This research presents a Wireless Sensor Network (WSN) based infusion monitoring system that utilizes Internet of Things (IoT) technology to enhance infusion management in healthcare. Manual supervision often lacks the necessary accuracy and control, making automated solutions crucial. Our system employs optocoupler and load cell sensors to calculate the infusion drop rate per minute and assess the remaining fluid percentage. Tests conducted demonstrated that optocoupler sensors effectively measured the drop rate, while load cell sensors accurately determined fluid levels. Measurement results are easily monitored via smartphone, granting healthcare professionals rapid access to vital data. A key innovation of this system is its ability to enable remote monitoring through WSN, allowing a single nurse to oversee multiple infusions with just one smartphone. The test results indicate impressive accuracy, achieving an average precision rate of 97% for drop rate measurements and 93% for remaining fluid percentage measurements. Overall, this system offers an efficient and controlled approach to infusion fluid management, ensuring optimal care for patients. By integrating IoT and WSN technologies, this research lays the groundwork for developing more advanced and interconnected infusion monitoring systems, ultimately enhancing patient care in today's globalized healthcare environment.
Production of Bioethanol from Bunches of Palm Oil Using Purification Equipment with Bioethanol Traps Samosir, Devina Sanchia; Bow, Yohandri; Hasan, Abu
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 6 No. 3 (2022)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v6i3.123

Abstract

Due to the rising demand for motor vehicle fuel, Indonesia's requirement for fossil fuels rises by an average of 10% annually. The supply of fossil energy, which serves as the primary raw material for generating fuel oil, is negatively correlated with the demand for fuel (BBM). Fresh Fruit Bunches (FFB), Empty Fruit Bunches (EFB), and fiber were the types of oil palm bunches employed in this investigation. EFB and fiber are industrial by products that are currently being used inefficiently and frequently pollute the environment. This trash is still only very minimally processed; it is still stored, burned in the incinerator, used as mulch on oil palm fields, and composted. 51.2 percent cellulose and 16.30 percent lignin are both present in EFB. Lignin makes up 20.0 percent of fiber, whereas cellulose makes up 57.0 percent. Through chemical and enzymatic procedures, this cellulose content may be exploited as a source of reducing sugars. FFB is used as a benchmark to evaluate how effectively the prototype tool works. Different kinds of high-quality bioethanol are produced from each raw source. Different kinds of high-quality bioethanol are produced from each raw source. Fresh Fruit Bunches (FFB), which have a refractive index of 1.35676 and a volume of 2,192 ml, are the best quality of bioethanol made from raw materials. The findings demonstrated that varied volumes and refractive indices were produced depending on how raw materials were treated. The quality generated improves with increased treatment volume. Alkaline delignification was followed by acid delignification to get the optimum grade. Empty Fruit Bunch (EFB) material, which had a refractive index of 1.34376, 2,105 ml of bioethanol, and a 68.15 percent ethanol concentration. This study is unique in that it includes a bioethanol trap to quicken the conversion of steam into liquid bioethanol. Condensation is completed in 15–20 minutes less time thanks to the bioethanol trap.
Characterization of Empty Fruit Bunch of Palm Oil as Co-firing Biomass Feedstock Rusdianasari, Rusdianasari; Arissetyadhi, Iwan; Kalsum, Leila; Bow, Yohandri; Syarif, Aida; Arifin, Fatahul
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 7 No. 1 (2023)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v7i1.237

Abstract

Empty fruit bunches of Palm Oil (EFB) are a potential source of biomass energy because they contain lignocellulose (cellulose, hemicellulose and lignin) so that they can be converted into biopellets for co-firing. The purpose of this research is to determine the raw material properties of EFB in the form of proximate, ultimate, lignin, and biopellets. Using a pelletizer, biopellets are created by adding starch as an adhesive. The raw material characteristics of EFB from proximate analysis revealed moisture content of 11.98%, ash content of 6.53%, volatile matter content of 65.15%, and fixed carbon content of 16.44%. According to the final study results, the biopellets from empty fruit bunches included 48.53% C, 6.05% H, 0.32% N, 36.8% O, and 0.08% Sulphure. The atomic ratio obtained from the final analysis results could be used to determine the calorific value that can be used for fuel; the biopellet calorific value of EFB is 4,583 kcal/kg, with Hardgrove Grindability Index (HGI) values of 78.6 and Ash Fusion Temperature (AFT) 1100oC. The lower the value of the atomic ratio contained, the higher the calorific value contained in a specific fuel.
Condenser Design on Plastic Oil Distillation Equipment Novarini, N; Kurniawan, Sigit; Rusdianasari, R; Bow, Yohandri; Rifa'i, Ahmad Imam
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2020: Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.92 KB) | DOI: 10.23917/iseth.1285

Abstract

The pyrolysis method is a technology in energy conversion that can be applied in processing plastic waste into alternative fuels in liquid form. The pyrolysis method begins with heating the plastic waste in the reactor at a temperature of more than 400°C so that the thermal degradation process of the material occurs without oxygen content, causing a phase change to the vapor phase. The vapor phase is cooled into the condenser to convert it into a liquid phase to obtain liquid fuel from plastic waste. In this study, the pyrolysis condenser design in changing the vapor phase from the reactor to the liquid phase was designed using water as a coolant on the annular side with a coolant inlet temperature of 25 ° C and a coolant outlet temperature of 35°C. The results showed that an annular side dimension with a diameter of 250 mm and a height of 250 mm was needed to reduce the temperature of the inlet condenser fuel vapor from 60°C to 30°C. Furthermore, the inner pipe of the condenser is made of copper material, which is formed by a spiral with a spiral diameter of 250 mm, an inner diameter of 25 mm, and a tubing length of 4,870 mm.
The Impact of the Argument-Driven Inquiry (ADI) Instructional Model on Biodiversity Topics to Enhance Students' Argumentation Skills Melta, Defrian; Razak, Abdul; Yohandri, Yohandri
Bioedunis Journal Vol 3, No 1 (2024)
Publisher : UIN Syekh Syekh Ali Hasan Ahmad Addary Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/bioedunis.v3i1.11217

Abstract

This study aims to investigate the impact of Argument-Driven Inquiry (ADI)-based biology instruction on students' argumentation skills in the context of biodiversity. The research is classified as a quasi-experimental study using a pretest-posttest nonequivalent control group design. The independent variable in this study is the implementation of the Argument-Driven Inquiry (ADI) instructional model. The population of this study comprises all tenth-grade students at SMAN 5 Padang. The sample consists of two classes, with Class X IPA 1 selected as the experimental group and Class X IPA 2 as the control group. Data on students' argumentation skills were collected using essay-type tests. The data analysis techniques employed include the Mann-Whitney U test, Wilcoxon Signed-Rank test, Independent Sample t-test, and Effect Size test. The results indicate that the use of the Argument-Driven Inquiry (ADI) instructional model positively influences the improvement of students' argumentation skills on the topic of biodiversity. This implies that students successfully achieved the targeted learning objectives using the ADI model.
Analisis Produksi Biogas dari Limbah POME dan Kotoran Sapi dengan EM-4 pada Digester terhadap Nilai Kalor Monica, Levia; Wiranata, Muhammad Adithia; Prakoso, Dibyo; Bow, Yohandri; Septiana, Iriani Reka; Manggala, Agus; Daniar, Rima
Jurnal Penelitian Sains Vol 27, No 3 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i3.1241

Abstract

Keterbatasan sumber energi konvensional mendorong eksplorasi terhadap alternatif energi terbarukan. Biogas adalah salah satu energi alternatif yang ramah lingkungan, dengan memanfaatkan limbah organik melalui proses anaerobik hingga menghasilkan gas metana. Tujuan dari penelitian ini untuk menganalisis produksi biogas dengan fokus pada pengaruh waktu retensi terhadap volume biogas, karakteristik komposisi biogas serta nilai kalor biogas yang dihasilkan. Penelitian dilakukan menggunakan digester berkapasitas 250 L dengan bahan baku berupa campuran limbah POME dan kotoran sapi dengan rasio [1:1]. Proses fermentasi dilakukan selama 25 hari dengan variasi waktu retensi 5, 10, 15, 20, dan 25 hari. Volume biogas, komposisi gas (CH₄, CO₂, O₂, dan H₂S), temperatur (digester dan lingkungan), pH slurry, serta tekanan gas menggunakan manometer U diamati secara berkala setiap 5 hari sesuai waktu retensi. Nilai kalor biogas kemudian dihitung berdasarkan persentase kandungan metana yang diperoleh. Hasil penelitian menujukkan bahwa produksi biogas meningkat seiring waktu retensi, dengan puncak produksi terjadi pada hari ke-25. Kandungan metana (CH4) maksimum mencapai 58 %Vol dan nilai kalor tertinggi diperoleh sebesar 20,76 MJ/m3 pada komposisi CH4 maksimum. Penelitian ini membuktikan bahwa kapasitas digester, volume bahan baku, serta parameter operasional seperti pH, temperatur, tekanan, dan waktu retensi memiliki pengaruh signif-ikan terhadap kualitas dan kuantitas biogas yang dihasilkan.
Enhancing Entrepreneurial Skills and Pancasila Student Profiles through Digital Learning Tools in Science Education Juanta, Palma; Festiyed, Festiyed; Diliarosta, Skunda; Lufri, Lufri; Yohandri, Yohandri; Moyo, Kgomotso
Aptisi Transactions On Technopreneurship (ATT) Vol 7 No 2 (2025): July
Publisher : Pandawan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34306/att.v7i2.518

Abstract

This research examines the effect of project-based learning (PjBL) assisted by ethnoscience animation videos on students problem-solving skills and their Pancasila character profile in science education. The study employed a quasi-experimental design to evaluate the impact of independent variables (PjBL and animated videos) on dependent variables (problem-solving skills and character development). The research objectives were to assess the effectiveness of the PjBL model in improving problem-solving skills and to determine its role in developing Pancasila character dimensions in students. The study involved students from classes VII-1 and VII-6 at Dr. Wahidin Sudirohusodo Middle School as the sample. Data collection included test instruments to measure problem-solving abilities and non-test instruments for assessing character dimensions of the Pancasila student profile. Results showed significant differences in the average scores of problem-solving skills between the experimental and control classes, with a significance value (2-tailed) of 0.00 < 0.05. Similarly, for the Pancasila student profile dimensions, the significance value was also 0.00 < 0.05, indicating a significant improvement in the experimental group. These findings confirm that the PjBL model assisted by ethnoscience animation videos is valid, practical, and effective for improving both problem-solving skills and character development. In conclusion, integrating PjBL with ethnoscience animation videos addresses the challenges in science education by aligning with skill-based and culturally relevant learning approaches. The model supports students cognitive and character development, making it suitable for application in the Society 5.0 era.
Effective CO₂ Capture from Biomass Flue Gas Using a DEA-Promoted Potassium Carbonate Absorbent in a Packed Column Reactor Aprizal, Candra; Hasan, Abu; Bow, Yohandri
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.446

Abstract

This research investigates the effectiveness of a Diethanolamine (DEA) promoted potassium carbonate (K₂CO₃) solution for capturing carbon dioxide (CO₂) from flue gas generated by the carbonization of coconut shells. The study aimed to evaluate the influence of absorption column packing height and absorbent flow rate on CO₂ removal efficiency. The absorption process was conducted in a counter-current packed column using a solution composed of 30% wt K₂CO₃ and 3% wt DEA. Key process variables included packing heights of 10, 20, 30, and 40 cm, and absorbent flow rates of 0.5, 1.0, and 1.5 L/m. The results demonstrated that the combined DEA and K₂CO₃ solution is highly effective, achieving a maximum CO₂ removal efficiency of 97.81% at a packing height of 40 cm and a flow rate of 1.5 L/m. Analysis of the absorbent solution revealed a corresponding decrease in carbonate (CO₃²⁻) concentration and an increase in bicarbonate (HCO₃⁻) concentration, confirming the chemical absorption of CO₂. The process kinetics were found to align with a pseudo-second-order model. This study concludes that a packed column absorption system with a DEA-promoted K₂CO₃ solution presents an effective and viable method for mitigating CO₂ emissions from biomass processing.
ANALISIS KOMPOSISI SYNGAS DAN NILAI KALOR PADA GASIFIKASI UPDRAFT BAHAN BAKU TEMPURUNG KELAPA DITINJAU DARI PENGARUH LAJU ALIRAN UDARA Raihansyah, Ahmad; Manurung, Nicolas; -, Zurohaina; Bow, Yohandri; Zikri, Ahmad
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 06 (2025): Chemical Engineering Journal Storage (CEJS)-December 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i06.24332

Abstract

Indonesia memiliki potensi besar sebagai penghasil sumber daya biomassa yang dapat dimanfaatkan sebagai energi alternatif di tengah meningkatnya kebutuhan energi dan ketergantungan terhadap bahan bakar fosil. Salah satu limbah biomassa yang melimpah adalah tempurung kelapa, yang memiliki kandungan karbon tinggi dan berpotensi dikembangkan sebagai bahan bakar alternatif melalui proses gasifikasi. Gasifikasi biomassa merupakan salah satu metode paling efektif untuk mengubah biomassa menjadi berbagai jenis energi Penelitian ini bertujuan untuk mengetahui pengaruh variasi laju alir udara terhadap komposisi syngas, nilai kalor (LHV), dan efisiensi termal pada gasifikasi updraft menggunakan arang tempurung kelapa.. Hasil penelitian menunjukkan bahwa laju alir udara 132 L/min menghasilkan komposisi syngas yang optimal yaitu CH4 0,9589%,H2 0,0356%,CO 0,0995%. Nilai LHV syngas tertinggi diperoleh sebesar 371,335 kJ/m³ pada laju alir udara 132 L/min, dan efisiensi termal tertinggi mencapai 23,41%. Dengan demikian, peningkatan laju alir udara berpengaruh positif terhadap pembentukan gas mampu bakar dan efisiensi proses gasifikasi arang tempurung kelapa
Initial Design of Earthquake Early Warning System With Smartphone Display Audia, Washilla; Yulkifli, Yulkifli; Yohandri, Yohandri
Journal of the Physical Society of Indonesia Vol. 1 No. 1 (2025): (April 2025)
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.1.1-12.2025

Abstract

This research presents the preliminary design of an automatic vibration detection system that can be used as an earthquake early warning system using the Internet of Things and a smartphone display, and to investigate the relationship between vibration acceleration and vibration intensity and magnitude. Earthquake early warning is an important tool to reduce the danger of earthquakes and is a form of earthquake mitigation. This system is designed using MPU6050, ESP8266, Arduino IDE, Buzzer, LCD, and Smartphone sensors. The relationship between variations in vibration intensity and magnitude with vibration acceleration is directly proportional. This system has 96% accuracy and the accuracy of vibration acceleration read on the system is 92%. This system can be a simple earthquake early warning solution in earthquake-prone areas to minimize the risk of earthquake natural disasters and can be used as a basis for developing earthquake disaster mitigation systems.
Co-Authors ,, Tahdid -, Zurohaina ., Zurohaina Abda Abda Abdul Razak Abdul Wahid Abu Hasan Abu Hasan Afrianda, Teguh Ahmad Taqwa Aida Syarif AIDA SYARIF Al-Insyrah, Eyza Recwika Ali Ahmad Alwi Nofriandi Alya Fazza Anisa, Widya Anwar, Suci Apri Mujiyanti Apriani, Akmecia Risqa Arif Budiman Arissetyadhi, Iwan Arizal Aswan Asrizal Audia, Washilla Aulia Asman Aulia, M Habib Ayu Permata Sari Bachty, Hadri Baharuddin Baharuddin BAKHRANI RAUF Bayu Saputra Budiman, Ria Candra Aprizal Daniar, Rima Darozat, Fajar Mukharom Diah Iswandari Diah Rahmawati Effendy, Sahrul Elza Safitri Erlinawati . Fadhila Ulfa Jhora Fadhlurrahman, M Revanza Fatahul Arifin Fatahul Arifin, Fatahul Fatria Fatria Fatria Febriana, Ida Festiyed Fitri Arsih Gabe, Totop Gunaria Siagian Harjadi Gunawan Harliyani, Ayu Dwi Heru Afriansyah I Nyoman Sila Ibnu Hajar Ichsan Astanto Idham Mahenri Ifdil Ifdil Illahi, Kurnia Indah Purnamasari Isdaryanto Iskandar Jaya Utama Putra Juanta, Palma Kalsum, Leila Kholidah , Nurul Leila Kalsum Leila Kalsum Lety, Trisnaliani Lufri Lufri M. Amir M. Reza Ramlan M. Syahirman Yusi Mahardhika, Lintang Putri Mairizwan, Mairizwan Manggala, Agus Manurung, Nicolas Marambang, Alfi Yory Maryam Seyaski Fitria Melta, Defrian Minda Azhar Miranda Roulina Miranda Roulina T Monica, Levia Moyo, Kgomotso Muhammad Agung Muhammad Reza Ramlan Muhammad Taufik Muhammad Yerizam Muhammad Zulfahmi Muhyiatul Fadilah Mustofa Mustofa Nabila Cindi Lestari Najwa, Cholida Nedia Sandika Nofi Yendri Sudiar Novarini, N Pakhrur Razi Prakoso, Dibyo Putra, Andhika Satria Putra, Asri Eka Putra, M. Rizky Adhitya Rahmadina, Nisa Raihansyah, Ahmad RD Kusumanto Reza Angraini Rhevy Liandari Rifa'i, Ahmad Imam Riri Jonuarti Rizky Dwi Ramadhon Robby Setiadi Robert Junaidi Robiansyah RR. Ella Evrita Hestiandari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Sahrul Effendy Salamah, Luthfia Samosir, Devina Sanchia sari, Desi Nurmala Sari, Mona Sari, Mona Berlian Septiana, Iriani Reka Shela Dilen Putri Sigit Kurniawan Sirajuddin Skunda Diliarosta Suaidi Ahadi Sundari, Okta Sutini Pujiastuti Lestari Sutini Pujiastuti Lestari Suyanta Suyanta Syakdani, Adi Tahdid . Thamrin Thamrin Tresna Dewi Wibby Aditya Putra Utama Widiartha, Wahyu Dewa Wiranata, Muhammad Adithia WULANDARI, NILA Yenni Darvina Yerimadesi Yulifarma, Rika Yulkifli Yulkifli Yusi, Syahirman Zakiyah Sri Rezeki Zikra Zikra Zikri, Ahmad Zikri, Ahmad Zulhendri Kamus Zulma, Degito Zurohaina