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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan JRTI (Jurnal Riset Tindakan Indonesia) Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik journal of social and economic research Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education

Arwizet Arwizet, Arwizet

Departemen Teknik Mesin Universitas Negeri Padang

Author-ID : 1756694

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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THE EFFECT OF TEMPERATURE AND ROASTING TIME ON CHANGES IN THE CHARACTERISTICS AND PHYSICAL PROPERTIES OF SOLOK ARABIKA COFFEE BEANS K, Arwizet.; Leni, Desmarita; Peng, Lim Hooi; Sumiati, Ruzita; Kusuma, Yuda Perdana
International Journal of Multidisciplinary Research and Literature Vol. 3 No. 1 (2024): INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND LITERATURE
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/ijomral.v3i1.202

High-temperature coffee roasting is a key initiator of the degradation of complex compounds in coffee beans, ultimately producing the desired taste and aroma for coffee enthusiasts. The aim of this research is to explore the influence of temperature and roasting duration on the changes in the mechanical properties of coffee beans using the conduction heat method. In this study, 500 grams of dried Arabica coffee with an initial moisture content of 12% were placed in a roasting apparatus equipped with a roasting machine. The heat source used was a gas stove, where the surface temperature of the roasting chamber was kept constant through a thermocouple temperature measuring device. The roasting process was carried out for 15 minutes at surface temperatures of 160°C, 180°C, 200°C, and 220°C, respectively. The final moisture content for each surface temperature was 3.72%, 3.65%, 2.13%, and 1.81%. Identification of the degree of roasting was conducted through the evaluation of the physical properties of coffee beans, including color, weight loss, moisture content, texture, and bean density. The decrease in hardness and density could be modeled using kinetic equations, while the color change was indicated by a decrease in the L, a, and b values. The research results confirm that roasting temperature significantly impacts the changes in the mechanical properties of coffee beans. The minimum temperature required to achieve satisfactory roasting levels is 180°C, while roasting at 200°C for 15 minutes produces coffee beans with optimal roasting levels. These findings provide new insights into optimizing the coffee roasting process to achieve the desired quality of coffee beans

ANALISIS ELECTRONIC PARKING UNTUK MENDUKUNG PENINGKATAN PENDAPATAN ASLI DAERAH (PAD) KABUPATEN INDRAGIRI HILIR Rianto, Bayu; Syah, Muhammad Rayhan; Karudin, Arwizet; Jalil, Muhammad; Chrismondari, Chrismondari
Selodang Mayang: Jurnal Ilmiah Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Vol. 9 No. 3 (2023): JURNAL SELODANG MAYANG
Publisher : Badan Perencanaan Pembangunan Daerah Kabupaten Indragiri Hilir Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47521/selodangmayang.v9i3.327

There are several sources of Regional Own-Source Revenue (PAD) in accordance with Law number 1 of 2022, one of which is parking fees that falls under local fees. To optimize and enhance the Regional Own-Source Revenue (PAD), professional and transparent management of parking fees is necessary. This study aims to determine the design of an information system, its effectiveness, and the advantages and disadvantages of using an electronic parking system for paying parking fees in Indragiri Hilir Regency. This research falls within the realm of qualitative research. The data sources used in this study include primary and secondary data. Data was collected through interviews, observations, documentation, and literature review. Data analysis techniques employed encompass data collection, data reduction, data presentation, verification, and conclusions. The management of parking fees still encounters several obstacles, including a lack of field supervision, exploitation by irresponsible individuals taking advantage of negligence for personal gain, and incomplete allocation of parking revenue to local governments. One solution to address leakages in the management of parking fee funds is the implementation of electronic parking, enabling effective monitoring of all parking-related aspects, thereby contributing to an increase in Regional Own-Source Revenue from the local fee sector, specifically parking fees.

Hubungan Fasilitas Workshop terhadap Hasil Belajar pada Mata Pelajaran Teknik Frais Siswa Kelas XI Teknik Pemesinan SMK Negeri 1 Tanjung Raya Robert, Julio; Erizon, Nelvi; K, Arwizet; Yuvenda, Dori
Al-DYAS Vol 3 No 3 (2024): OKTOBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/aldyas.v3i3.3752

Vocational High School (SMK) which is a school that educates students with professional knowledge and skills as well as talents and interests to prepare skilled workers in accordance with the needs of the business world and industry. Therefore, in the learning process, practicum facilities in the workshop play an important role in determining the success of students to learn effectively so as to achieve the desired learning outcomes. This study aims to determine the relationship between the completeness of Workshop facilities and student learning outcomes in grade XI students majoring in Mechanical Engineering at SMK Negeri 1 Tanjung Raya. This study uses a type of correlational quantitative research with a population of 60 students. The questionnaire with 35 items was used as a measuring tool, the results of the study showed a significant relationship between the learning outcomes of milling machining techniques of grade XI students of SMK Negeri 1 Tanjung Raya and the completeness of workshop facilities where R calculated (0.603) > R table (0.254). The completeness of workshop facilities contributed 36.3% to the success of milling machining engineering learning for grade XI students of SMK Negeri 1 Tanjung Raya and another 63.7% was influenced by other factors.

Implementation of experiential learning method in mechanical drawing course to enhance student understanding through real projects Nasution, Ridhollah; K, Arwizet; Fernanda, Yolli
Journal of Engineering Researcher and Lecturer Vol. 3 No. 2 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i2.127

This research explores the implementation of experiential learning to improve students' understanding and skills in mechanical drawing using CAD software. We used this approach to identify challenges in learning mechanical engineering, including lack of time to learn CAD, suboptimal mechanical drawing skills, and limitations in producing details of mechanical components. Through a quasi-experiment with experimental and control classes, we measured the impact of the experiential learning method on improving conceptual understanding and practical skills in mechanical drawing. The results show that this approach is effective in improving students' understanding of detailed drawings and practical skills. The implementation of Experiential Learning also improved students' cognitive learning outcomes and psychomotor skills in mechanical drawing. The findings highlight the importance of adaptive and technological approaches to engineering education that are aligned with modern industry needs.

Design and Testing of Belt Grinding Development Setiawan, Sepdirama; K, Arwizet; Syahri, Budi; Ambiyar, Ambiyar; Darmawi, Darmawi; A, Yufrizal
Teknomekanik Vol. 1 No. 2 (2018): Regular Issue
Publisher : Universitas Negeri Padang

The author observes that the use of belt grinding is still rare in the writer's own environment, both in the fields of education and small industries, because there are still many people who are fixated on ordinary grinders, and think that ordinary grinders are better in all work. The development of belt grinders has changed people's perspectives through the development that the authors have done, with increasing belt grinding functions through development which will certainly make belt grinders even more useful. This belt burrs are made and developed through pre-existing belt grinding shapes. The result of this development is a belt grinder which has a function more than the belt grinder which is already before. This belt burrs has three types of work functions, namely vertical, horizontal, and cutter, and also features speed control. With the development that the author does, of course, it will change people's perspectives because belt grinding has a function that is better than before and can better help the work of a grinding process.

Comparative Analysis Spindle Speed Constant with Cutting Speed Constant against Surface Roughness Gradual Turning Steel ST 37 on the NC PU 2A Machine Efendi, Defindo; A, Yufrizal; K, Arwizet
Teknomekanik Vol. 1 No. 2 (2018): Regular Issue
Publisher : Universitas Negeri Padang

Parameters of spindle speed and cutting speed affect surface roughness in the turning process. The purpose of this research is to know the comparison of the level surface roughness resulting from the parameters of spindle speed constant and cutting speed constant. The method of this research is experimental research, by performing gradual turning process on the steel ST 37 specimens in the NC PU 2A EMCOTURN 120 machine. The number of specimens is 6 specimens, each specimen is gradual turned as much 3 levels, each level is tested as much 3 points of surface quality using "Surface Tester Mitutoyo SJ-201P". The results of the research were analyzed using descriptive statistics by taking the average value of the two parameters. Based on the analysis of the data from the results of the research conducted, the surface roughness produced using a cutting speed constant (G96) is better than the spindle speed constant (G97). Cutting speed constant is more stable when cutting in gradual turning.

Comparative Study of Performance Test of Refrigerators and Its Relationship with Electric Power Consumptions Karudin, Arwizet
Teknomekanik Vol. 2 No. 2 (2019): Regular Issue
Publisher : Universitas Negeri Padang

Refrigerator has a significant role as a tool for food storage. Stored foods in refrigerator can be maintain the food quality and delay the stale. Currently, the refrigerator not only used at home but also in offices or shops that sell foods. It could imagine if without refrigerator, the foods will fast stale and lost their quality. This Research aim to know the performance parameters of refrigerator among others consumption total refrigerator power compared to with the resulting performance or Energy Efficiency Ratio (EER), and characteristics decline temperature in cabin at range time certain with two of brands refrigerator on the market. Research about of the refrigerator performances follows ISO-7371-1985 standards, European Standard EN 153, British Standards Institution 1990. Results obtained to refrigerator tested that average input power for refrigerator A is 83.3 Watts and input power inside condition stable of 66 Watts, EER 1.84 and the minimum temperature can be achieved in cabin refrigerator in time for 5 hours; -11.8 ℃ in the above of cabin, -6.2 ℃ in the center of cabin and 5.1 ℃ in the bottom of cabin, temperature product is -14.4 ℃. For refrigerator B average input power is 85.8 Watts and input power inside condition stable is 74 Watts, EER 1.64 and the minimum temperature can be achieved in cabin refrigerator; -5.5 ℃ in the above of cabin, 0.9 ℃ in the middle of cabin and 1.7 ℃, temperature product is -9.8 ℃.

Performance Analysis of Water Heating System by Using Double Glazed Flat Plate Solar Water Heater Putra, Andika; K, Arwizet; Fernanda, Yolli; Sari, Delima Yanti
Teknomekanik Vol. 4 No. 1 (2021): Regular Issue
Publisher : Universitas Negeri Padang

Nowadays, the use of solar energy is incredibly important to be increased since solar energy is renewable energy and also does not cause pollution. To harness solar energy, a solar collector device is needed to convert solar energy into heat energy. This study aimed to analyze the heat transfer in the flat plate solar collector which is used as a source of thermal energy in the water heating process for bathing. A double-glazed solar collector was used to absorb solar thermal energy and then transferred it to a water pipe. The pipe material used copper which has a very high conductivity value with an outer diameter of 15.7 mm. The plate collector used aluminium plates because they have high thermal conductivity. The dimensions of the collector frame were 150 cm long, 80 cm wide and 80 cm high. The collector frame was made of wood and covered with an insulator from coconut fibre with a thickness of 8 cm, with a tilt angle of 15˚. Based on the experimental process, the collector temperature was taken by using a thermocouple in order to heat the water which the inlet temperature in a bucket was 28˚C and the outlet water temperature during the experiment was 40˚C.

STUDI PERBANDINGAN HASIL PRAKTIKUM PEMBELAJARAN PROJECT BASED LEARNING DENGAN PEMBELAJARAN LANGSUNG PADA SISWA KELAS X TEKNIK PERMESINAN DI SMK NEGERI 1 TANJUNG RAYA Oky Erlangga; Arwizet K; Purwantono
Journal of Social and Economics Research Vol 2 No 2 (2020): JSER, December 2020
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/jser.v2i2.47

Penelitian ini bertujuan untuk mengetahui perbedaan penerapan model pembelajaran project based learningterhadap hasil belajarmata pelajaran Teknologi Mekanik kelas X Teknik Permesinan semester genap di SMK Negeri 1 Tanjung Raya Tahun Ajaran 2015/2016.Penelitian ini berpusat pada masalah rendahnya hasil belajar siswa pada mata pelajaran gambar teknik dimana salah satu faktor penyebabnya adalah kurang tepatnya pemilihan model pembelajaran oleh guru. Metode ini yaitu penelitian eksperimen.Pengambilan sampel dengan teknik simple random sampling.Kelas kontrol adalah X TM 1 menggunakan model pembelajaran langsung dan kelas eksperimen adalah X TM 2 menggunakan model pembelajaranprojectbased learning. Teknik pengumpulan data dari nilai akhir hasil belajar dianalisis untuk uji homogenitas dan uji hipotesis. Untuk mengetahui kesamaan rata-rata siswa dilakukan pre test nilai semester ganjil diambil sebagai pre test atau test awal. Setelah dilakukan uji homogenitas maka diperoleh hasil rata-rata pre test untuk kelas control mendapatkan hasil nilai rata-rata total sebesar 74 gabungan nilai pengetahuan dan keterampilan, sedangkan untuk kelas eksperimen mendapat hasil nilai rata-rata total sebesar 75 gabungan dari nilai pengetahuan dan keterampilan.Hasil penelitian kelas eksperimenmendapatkan nilai rata-rata 83, sedangkan kelas kontrol mendapatkan nilai rata-rata 78. Hasil perhitungan hipotesis pada taraf signifikan α=0,05 didapatkan thitung> ttabel yaitu (2,92> 1,684), karena thitung besar dari ttabel,maka hipotesis nol (H0) ditolak dan hipotesis alternatif (Ha) diterima. Model pembelajaran project based learningmemberikan peningkatan hasil belajar yang lebih besar yaitu 7,7 % sebanyak 20 siswa memperoleh nilai di atas KKM (>75) dibandingkan dengan model pembelajaran langsung hanya 12 siswa memperoleh nilai di atas KKM (>75). Disimpulkan bahwa model pembelajaran project based learninglebih baik dibandingkan dengan model pembelajaran langsung.

Effect of Load Cooling on the Performance of Steam Power Plant Condensers Adri, Junil; Arwizet, Arwizet; Ariyanto, Dedi
International Journal of Multidisciplinary Research of Higher Education Vol 7 No 3 (2024): (July) Theme Education, Sciences, Engineering and Economic
Publisher : Islamic Studies and Development Center in Collaboration With Students' Research Center Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijmurhica.v7i3.226

This study analyzes the impact of cooling load on condenser performance in the Steam Power Plant. The condenser, as a heat exchanger, plays a critical role in condensing steam from the turbine back into liquid form, thus maintaining the continuous cycle of the steam power system. Survey-based research was conducted, with data collected on steam and cooling water temperatures at various stages. The steam inlet and outlet temperatures were recorded at 514°C and 465°C, respectively, with cooling water entering at 32.9°C and exiting at 38.9°C at a flow rate of 100 m³/h. Using the Log Mean Temperature Difference method, initial and final temperature differences were calculated at 453°C and 465°C. Results suggest that tube fouling or leakage contributes to declining condenser efficiency, which can significantly reduce power plant performance. This study highlights the importance of regular maintenance and monitoring of condenser units to optimize thermal efficiency and power generation output.

Co-Authors - Primawati -, Nasrullah - A, Esa Hafizul A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdul Aziz Ade Habibbullah Adriansyah Adriansyah Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Agustian, Rizki Ahmad Arif Ahmad Arif Ahmad Natafian Fauzi Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alfarizi, Diki Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Arafat, Andri Arafat, Andril Arham, Veri Budiawan Ariyanto, Dedi Aryasandy, Nensy Asep Bunyamin Azmil Azman Bayu Rianto Berliansyah, Aqilvin Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Dodi Ariska Doni Saputra Dori Yuvenda Efendi, Defindo Efriwan Efriwan Eko Indrawan Endri Rizki Anugrah Erdi, Putri Nurhalimah Erizon, Nelvi Erlanda, Rendi Fachrur Rozi Fachry Novrianda Fahrendra, Aqsal Faisal, Afdal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Giatman Giatman, M Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Handepi, Nogi Haris Haris Haris Haris, Haris Hasan Maksum Hasanuddin Hasanuddin Hasanuddin WS Helga Yermadona Hendra Hendra Hendra, Carlen Muhammad Hendri Nurdin Idra Putra Irfan Amir Irfan, Abdillah Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jasman Jasman Junil Adri Kandena Putra, Tegar Khairuni Delfi Anisa Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Maresta, Felia Martias Martias Miftahul Arrafi Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akbar Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Ihsan Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nugraha, Ikhsan Dani Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Ovi Marendah Pasaribu, Reynaldy Peng, Lim Hooi Prasetya, Kresna Adi Prasetyo, Vicky Pratama, Arief Juneirul Primawati Primawati Primawati Primawati, Primawati Purnama, Andreadi Purwantono purwantono purwantono Purwantono Purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putri Nurhalimah Erdi Putri, Prima Yane Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rebi Okzama Refdinal Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Robby, Muhammad Robert, Julio Rozandi, Azel Ruzita Sumiati Said Fuad Amry Salamuddin Ahmad Sari, Fretina Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Sihombing, Ahmad Rifai Simon, Ryan Ananda Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Supardi Supardi Suparno Suparno Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Tamasya, Fido Delfri Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanriko, Armizal Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zamora, Jimmi

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