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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan The Journal of Experimental Life Sciences (JELS) Journal of Education and Learning (EduLearn) Jurnal Produksi Tanaman Rekayasa Mesin Jurnal Prima Edukasia AGRIVITA, Journal of Agricultural Science Prosiding Semnastek Jurnal Penjaminan Mutu Diksa : Jurnal Pendidikan Bahasa dan Sastra Indonesia Preventif Journal Indonesian Food Science and TechnologyJournal Journal of Humanities and Social Studies Seloka: Jurnal Pendidikan Bahasa dan Sastra Indonesia Journal of English Education and Teaching (JEET) Jurnal Agro Wiralodra International Journal of Economics, Business and Accounting Research (IJEBAR) JPSI (Journal of Public Sector Innovations) JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Piwulang : Jurnal Pendidikan Bahasa Jawa Teknomekanik Community Empowerment SALEE: Study of Applied Linguistics and English Education Mechanical Engineering for Society and Industry Automotive Experiences Insan Cendekia: Jurnal Pendidikan Urecol Journal. Part D: Applied Sciences Borobudur Engineering Review Studies in English Language and Education Nanggroe: Journal Of Scholarly Service International Journal of Multidisciplinary Sciences Nanggroe: Journal of Scholarly Service Algebra Advance Sustainable Science, Engineering and Technology (ASSET)
Budi Waluyo
Universitas Muhammadiyah Magelang, Indonesia
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Captain Seat: Smart Solution for Physical Distancing on Buses During the Covid-19 Pandemic Muji Setiyo; Budi Waluyo
Automotive Experiences Vol 4 No 1 (2021)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.21 KB) | DOI: 10.31603/ae.4383

Abstract

It has been a year after the announcement of Covid-19 outbreak in Wuhan. Activity restriction, implementation of health protocol, and lock-down are enforced to cut-off the spread of this virus. However, in the uncertainty towards a new normal, the mobility of people continues for various purposes. A rapid medical check-up at the airport or at railway stations is possible by the local authorities but it is impossible for public bus passengers due to the limitations of medical staff and a large number of bus stations. Most passengers also failed to comply with the government's recommendation to conduct a rapid test before using public buses. As anticipation, the Transportation Agency issued a regulation that all buses can only be filled with 50% (max) of their normal capacity by emptying 2 of the 4 seats in a row. As a consequence, a 32-seat bus can only be filled with 16 passengers (max) and the ticket price has doubled to cover operational costs. However, passenger interest in bus services has decreased due to high ticket prices. Therefore, this short article reports the smart actions of several bus companies in Indonesia to create a "Captain Seat", a 1-1-1 bus seat configuration to ensure physical distancing between passengers. With the captain seat model, buses with 32 seats are modified to 24 seats, the ideal distance between passengers during a pandemic can be maintained, the risk of loss to bus companies can be reduced, and passenger costs can be lowered.
Exhaust Gas Emissions of Homogeneous Gasoline-Methanol-(Ethanol) Blends Budi Waluyo; Bagiyo Condro Purnomo
Automotive Experiences Vol 5 No 2 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.6599

Abstract

In recent years, one of the most logical efforts made to reduce the dependence on fossil energy sources is the use of a gasoline-methanol fuel blend. However, the problem in using a gasoline-methanol blend as fuel is that the methanol will eventually separate itself from the gasoline unless they are properly blended together, this is because methanol has a polar hydroxyl group called monohydric that binds water vapor together, causing the mixture to separate. Previous research showed that adding a small amount of ethanol to the gasoline-methanol blend makes it a homogeneous blend. Therefore, this research aims to identify the exhaust emissions of the homogenous gasoline-methanol-(ethanol) blend. For each blended fraction was tested on a single-cylinder four-stroke engine. The emission test is carried out in two stages which include the gasoline mode, and the alcohol mode. These two measurement modes undergo a validation process to correct the differences in the measurement results of the gasoline-methanol-ethanol blends. The test results show that increasing the methanol fraction in the gasoline-methanol-(ethanol) fuel blend results in reduced emission of carbon monoxide and unburnt hydrocarbon because methanol has a high enthalpy of evaporation, which increases both volumetric efficiency and complete combustion. In addition, the increase in the methanol fraction in the gasoline-methanol-(ethanol) blend showed a higher increase in carbon dioxide emissions. This is because methanol and ethanol have a much lower energy content than gasoline. Therefore, its energy production per unit time requires more fuel molecules.
Penerapan Mesin Oven Hemat Energi Untuk Pengeringan Brown Sugar pada Kelompok Wanita Tani Rahayu Manunggal Desa Ngancar Di Kecamatan Candimulyo Kabupaten Magelang Suroto Munahar; Bagiyo Condro Purnomo; Budi Waluyo; Saifudin Saifudin
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 6 No 2 (2022): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v6i2.574

Abstract

This article is the result of implementing the CSR program of PT PLN Magelang Regency branch to help solve problems in the Rahayu Manunggal Women Farmers Group (KWT). High production costs and low profits are obstacles faced by KWT Rahayu Manunggal. This problem is caused by the production process of making brown sugar which uses quite a lot of energy, including the drying process of brown sugar. Applying an energy-efficient oven at KWT Rahayu Manunggal can help overcome this problem. The concept of the oven machine is designed by utilizing the heat/energy stored in the exhaust gas produced by the sap cooking furnace. The results obtained from this system can increase profits and reduce production costs, as well as improve the cleanliness of brown sugar processing.
Biodiesel Production from Waste Cooking Oil: Characterization, Modeling and Optimization Aditya Kolakoti; Muji Setiyo; Budi Waluyo
Mechanical Engineering for Society and Industry Vol 1 No 1 (2021)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.5320

Abstract

In this study, waste and discarded cooking oils (WCO) of palm, sunflower, rice bran and groundnut oils are collected from local restaurants. The high viscous WCO was converted into waste cooking oil biodiesel (WCOBD) by a single-stage transesterification process. During the transesterification process, the important parameters which show a significant change in biodiesel yield are studied using the optimization tool of response surface methodology (RSM). Results reported that 91.30% biodiesel yield was achieved within L18 experiments and NaOH catalyst was identified as the most influential parameter on WCOBD yield. Artificial Intelligence (AI) based modeling was also carried out to predict biodiesel yield. From AI modeling, a predicted yield of 92.88% was achieved, which is 1.70% higher than the RSM method. These results reveal the prediction capabilities and accuracy of the chosen modeling and optimization methods. In addition, the significant fuel properties are measured and observed within the scope of ASTM standards (ASTMD6751) and fatty acid profiles from chromatography reveal the presence of high unsaturated fatty acids in WCOBD. Therefore, utilizing the waste cooking oils for biodiesel production can mitigate the global challenges of environmental and energy paucity.
Utilization of biogas as a source of electrical energy to support energy independent cages for dairy Cattle Farmers Group Sumber Sari, Ngablak, Magelang Budi Waluyo; Bambang Pujiarto; Rochiyati Murniningsih; Sofyan Kurniawan; Husni Rakhmawan Fatoni; Dimas Riki Romadhon
Community Empowerment Vol 7 No 3 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.025 KB) | DOI: 10.31603/ce.6138

Abstract

The high monthly costs associated with the use of electrical energy for the production of dairy cowsheds at the KTT Sumber Sari, as well as the problem of PLN blackouts, have a negative impact on the smooth production process. Meanwhile, KTT Sumber Sari already has a 40 m3 biodigester that has only been used for household cooking. Problem identification, socialization, product development, and modification are the methods used in this program. The problem that has been solved as a result of this community service program is the provision of a biogas-fueled electric generator with a capacity of 5 kWatt. To optimize the performance of the engine driving the electric generator, a few changes were made to the standard gasoline-fueled genset propulsion engine, including the construction of the fuel intake and the adjustment of the combustion chamber compression pressure. The KTT Sumber Sari, can use this capacity to support energy-independent cages.
Design and Implementation of Sterilization Chamber with Ozone and UV-C Light to Break the Transmission of Covid-19 Muhammad Latifur Rochman; Lilik Budiyarto; Muhammad Iqbal Al-Fikri; Khoirul Fa’i; Prasasti Bayu Aji Pramono; Riyan Tri Aditya Pamungkas; Baginda Pangidoan Tanjung; Refaldy Pristiwantoro; Widha Bagus Fahriansyah; Agung Setyo Pambudi; Ahmad Irfan; Riyan Adhy Pratama; Lalank Samudra Mukti Hidayat; Setyo Widiantoro; Darmawan Rois; Muhammad Mauludin Kharim; Wahyu Danu Romadlon; Dwi Restianto; Muji Setiyo; Budi Waluyo; Bagiyo Condro Purnomo; Suroto Munahar; Noto Widodo; Saifudin Saifudin
Urecol Journal. Part D: Applied Sciences Vol. 1 No. 1 (2021): January - June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.204 KB) | DOI: 10.53017/ujas.55

Abstract

The emergence of Corona Virus Disease 19 (Covid-19) required a new method to control its spread. During this time, controlling COVID-19 was carried out by implementation of a sterilization chamber using a liquid-based disinfectant. However, the use of liquid-based disinfectants has been evaluated to be less effective because it allows disrupting the respiratory tract. Therefore, this work presents a negative pressure sterilization chamber using Ozone and UV-C lamp. Ozone has been recommended by the Indonesian Institute of Sciences (LIPI) as a substitute for liquid-based disinfectants. In addition, to maximize performance, the chambers are added with UV-C lamps. The negative pressure sterilization chamber with Ozone and ultraviolet lamps was successfully created with the main parts of the cubicle chamber, an Ozone generator, at least one ultraviolet lamp, exhaust fan, switch, and a timer. The negative pressure sterilization chamber with Ozone and ultraviolet lamps according to this work, where the Ozone supply from the Ozone generator is made automatically to the door opening and closing. The duration of the Ozone supply was regulated by a timer. Then, the ultraviolet lamp can be activated together with Ozone or independently. With the implementation of this sterilization chamber, the spread of the Covid-19 virus is expected to be suppressed in a safer way than using liquid-based disinfectants.
Study on the Addition of A Swirling Vane to Spark Ignition Engines Fueled by Gasoline and Gasoline-Ethanol Wawan Purwanto; Jerry Chih Tsong Su; Muhammad Latifur Rochman; Budi Waluyo; Krismadinata Krismadinata; Ahmad Arif
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7981

Abstract

Although the technology of fuel injection in motorcycles has reached ports and direct injection, motorcycles with carburetors are still used. In this research, the carburetor was modified by adding a swirling vane. This study is intended to provide an explanation regarding engine performance which includes torque, power, mileage, emissions, and engine oil temperature. The study begins with a review of the shape and flow characteristics of the swirling vane based on the largest flow according to previous studies. Then, a swirling vane is built and tested to ensure its optimal shape. The findings were compared with conventional carburetor-based engines that had not been treated. Experiments were also carried out on gasoline-ethanol to obtain optimal results and use them appropriately for alternative fuel applications. A comparison of data on torque, power, exhaust emissions, temperature, and mileage reveals that vehicles modified with swirling vanes have better performance. Furthermore, based on the results of gasoline-ethanol application tests, this design is only suitable for use up to E25.
Design and Implementation of Sterilization Chamber with Ozone and UV-C Light to Break the Transmission of Covid-19 Muhammad Latifur Rochman; Lilik Budiyarto; Muhammad Iqbal Al-Fikri; Khoirul Fa’i; Prasasti Bayu Aji Pramono; Riyan Tri Aditya Pamungkas; Baginda Pangidoan Tanjung; Refaldy Pristiwantoro; Widha Bagus Fahriansyah; Agung Setyo Pambudi; Ahmad Irfan; Riyan Adhy Pratama; Lalank Samudra Mukti Hidayat; Setyo Widiantoro; Darmawan Rois; Muhammad Mauludin Kharim; Wahyu Danu Romadlon; Dwi Restianto; Muji Setiyo; Budi Waluyo; Bagiyo Condro Purnomo; Suroto Munahar; Noto Widodo; Saifudin Saifudin
Urecol Journal. Part D: Applied Sciences Vol. 1 No. 1 (2021): January - June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53017/ujas.55

Abstract

The emergence of Corona Virus Disease 19 (Covid-19) required a new method to control its spread. During this time, controlling COVID-19 was carried out by implementation of a sterilization chamber using a liquid-based disinfectant. However, the use of liquid-based disinfectants has been evaluated to be less effective because it allows disrupting the respiratory tract. Therefore, this work presents a negative pressure sterilization chamber using Ozone and UV-C lamp. Ozone has been recommended by the Indonesian Institute of Sciences (LIPI) as a substitute for liquid-based disinfectants. In addition, to maximize performance, the chambers are added with UV-C lamps. The negative pressure sterilization chamber with Ozone and ultraviolet lamps was successfully created with the main parts of the cubicle chamber, an Ozone generator, at least one ultraviolet lamp, exhaust fan, switch, and a timer. The negative pressure sterilization chamber with Ozone and ultraviolet lamps according to this work, where the Ozone supply from the Ozone generator is made automatically to the door opening and closing. The duration of the Ozone supply was regulated by a timer. Then, the ultraviolet lamp can be activated together with Ozone or independently. With the implementation of this sterilization chamber, the spread of the Covid-19 virus is expected to be suppressed in a safer way than using liquid-based disinfectants.
Optimizing energy harvesting from waste motor oil through steam reforming: A path to efficient combustion and emissions reduction Budi Waluyo; Bambang Pujiarto; Nofa Ardana; An’nisa Solihah; Muhammad Latifur Rochman; Ahmad Tresno Adi
Mechanical Engineering for Society and Industry Vol 3 No 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10362

Abstract

Waste Motor Oil (WMO) is a hazardous waste material with the potential to contaminate water, soil, and the atmosphere. The management and engineering of WMO have become imperative in modern society for both resource utilization and environmental protection. Maximizing the energy content of WMO poses a significant challenge for researchers, to solve environmentally friendly solutions. Direct combustion of WMO often results in incomplete combustion and elevated CO emissions. Therefore, this research aims to optimize the harnessing of WMO's energy potential through a furnace equipped with steam injection. The steam is generated by utilizing the heat energy produced during the WMO heating process. Our study demonstrates that steam injection in the WMO furnace is an effective method for maximizing energy content while simultaneously reducing CO emissions.
Facebook-Based E-Portfolio Assessment in An EFL Classroom: Design, Enactment, and Evaluation Syairofi, Ahmad; Waluyo, Budi
SALEE: Study of Applied Linguistics and English Education Vol. 5 No. 2 (2024)
Publisher : STAIN Sultan Abdurrahman Kepulauan Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35961/salee.v5i2.1523

Abstract

Although many studies have attempted to explore the viability of Facebook for educational purposes, little attention has been paid to the employment of Facebook as a platform for e-portfolio assessment in reading classes for vocational high school students. To fill this void, this case study aimed to design, enact, and evaluate a Facebook-based e-portfolio assessment. This study adopted Lam’s (2013) logistics of the portfolio process. The data was obtained from the researcher’s and participants’ documents, observations, and interviews. Then, thematic analysis was employed to analyze the data qualitatively. The findings revealed that the instructional design for this e-portfolio assessment made the participants enjoy the learning process and promote literacy activities. The design scaffolded and engaged participants with technological activities, while the enactment process promoted active learning. The evaluation promoted self-directed learning as the participants could revise their works and choose which works to be assessed. The implications of the study and future directions were also discussed.
Co-Authors Achmad Fuad, Erika Addion Nizori Ade Burhanudin Aditya Kolakoti Agung Setyo Pambudi Ahmad Arif Ahmad Irfan Ahmad Tresno Adi Akbar, Ilham Malik Akmal Rijal Aldri Frinaldi Alfannany, Ichsanuddin Noorsy Amalia, Suci Nugrah Anantama, Herlang Anna Satyana Karyawati Annisa Farhah Resdiyanti Answary, Ayub An’nisa Solihah Arifin Noor Sugiharto Arina, Bendang Sari Arrohmatan, Arrohmatan Astiana Ajeng Rahadini Aswarliansyah, Aswarliansyah Atikah Anindyarini Attaufiqy, Wahyu Alvian Rizqy Ayuani, Kusmira Dwi Baginda Pangidoan Tanjung Bagiyo Condro Purnomo Bakoko, Rahmah Balbeid, Merlya Bambang Pujiarto Bambang Pujiarto Bambang Septian Basri, Sairul Belaffif, Mohammad Bahrelfi Biantoro, Wahyu Br Ginting, Jesika Ekarina Burhanudin, Ade Chaireni Martasari Choirun, Annisa'u Damar Isti Pratiwi Damayanti, Amelia Darmawan Rois Darmawan Saptadi, Darmawan Debataraja, Raymon BT Dhimas Cahyo Anindito Dian Siswanto Dianwari, Frieska Mayang Didik Hariyono Dimas Riki Romadhon Djoko Sulaksono Dwi Restianto Farhan Aulia Rahman, Muhammad Faronny, Danniary Ismail Febriyanti, Vera Fitriyanti, Ira Flour Nadhif, Iftikar Fungky Dyan Pertiwi Fungky Dyan Pertiwi Ginting, Jesika Ekarina Br Hamid Saifudin hidayat, iqbal Husni Rakhmawan Fatoni Ilham Habibi Ilham Habibi, Ilham Ilham_Prawira_Hasbi Jati Batoro Jerry Chih Tsong Su Kenfitria Diah Wijayanti Khoirul Fa’i Kirana, Indah Ratna Kivevele, Thomas Kolakoti, Aditya Krismadinata Krismadinata Kumar, Ajay Goel Kuswanto Kuswanto Lalank Samudra Mukti Hidayat Lestari, Winda Dwi Lilik Budiyarto Makarim, Nabil Maradheta, Amartya Afra Masykuri, Hafid Insan Melati Julia Rahma Merlya, Merlya Mertasari, Chaerani Mienanti, Devi Miftachul, Arif Nur Mirjam Anugerahwati Mubarok, Amrul Muhammad Iqbal Al-Fikri Muhammad Latifur Rochman Muhammad Mauludin Kharim Muji Setiyo Ni'amul Albab, Muhammad Nofa Ardana Noto Widodo Nunung Harijati Nurhasanah, Fadila Pangestu, Hafidh Rian Panjaitan, Rido Parulian Pirouzfar, Vahid Prameswari, Rosabela Sayu Prasasti Bayu Aji Pramono Prasetyo Adi, Dwi Prima Veronika Purnomo, Bagiyo Condro Purnomo Condro Purwanto, Wawan Puspita, Kezia Ayuni Putri, Fitri Desmarianita Putri, Nanditya Vianti Putri, Restu Gista Putro, Agung Nugroho Rahmadhani, Fitria Suci Rahmat Raja, Thirunavukkarasu Ramadhan Tosepu Refaldy Pristiwantoro Ridlo, Mahmuddin Rifky Ismail Riyan Adhy Pratama Riyan Tri Aditya Pamungkas Rochiyati Murniningsih, Rochiyati Rochman, Muhamad Latifur Rosy Tristanti Rusdjijati, Retno Sahrial Sahrial Saifudin Saifudin Saifudin Saputra, Yusuf Surya Septian, Bambang Setyawan, Hendrix Yulis Setyo Widiantoro Sisca Fajriani SK Rizky Wibowo Sofyan Kurniawan Songkhai, Kritsadee Sri Lestari Purnamaningsih Sri Rachmajanti Sugiri, Dani Sunaryo Sunaryo Suniah, Siti Suroto Munahar Susilo, Anggun Trisnanto Hari Susinggih Wijana Sutianingsih, Sutianingsih Syairofi, Ahmad Tama, Pasya Yauga Danial Eka Thirunavukkarasu Raja Thomas Kivevele Tri Wintolo Apoko TYA RESTA FITRIANA Utama, Sunu Setiawan Utami Widiati Vahid Pirouzfar Wahyu Danu Romadlon Wahyu Widoretno Widha Bagus Fahriansyah Yanuar Danaatmadja, Yanuar Yun Arifatul Fatimah Yunus, Toni Zamzami, Ahmad Nabiel