Article Per Year (5 Year)
p-Index From 2021 - 2026
6.235
P-Index
This Author published in this journals
All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Abdi Ilmu INFOKUM Jurnal Tunas JiTEKH (Jurnal Ilmiah Teknologi Harapan) Jurnal VORTEKS Jurnal SImetri Rekayasa Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan Jurnal Industri dan Teknologi Samawa (JITSA) Prioritas : Jurnal Pengabdian Kepada Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Indonesia Sosial Teknologi IRA Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Aviation Science and Engineering IESM
Uun Novalia Harahap
Program Studi Teknik Industri, Fakultas Teknik Dan Komputer, Universitas Harapan Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 54 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 54 Documents
Search

 2   3   4   5   6 
Pemanfaatan Limbah Cangkang Telur Sebagai Katalis Biodiesel Dari Minyak Goreng Limbah Pada UMKM Roti Pakcik Tanjung Morawa Muhammad Idris; Indra Hermawan; Jufrizal Jufrizal; Yopan Rahmad Aldori; Supriatno Supriatno; Uun Novalia Harahap
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i3.258

Abstract

This Community Service Program focuses on managing micro-business-scale food production waste. The activity was carried out at Pakcik Tanjung Morawa Roti MSMEs in the Tanjung Morawa area. These MSMEs produce used eggshell waste and cooking oil every day. The waste has not been managed systematically and could pollute the surrounding environment. This program aims to increase partners' awareness of the value of organic waste. The program also introduces the concept of waste utilization as an alternative energy source.  The activity's approach is educational and informative through field visits. The methods used include observation, interviews, and two-way discussions. The team conveyed the potential of eggshells as a source of calcium oxide.  Calcium oxide serves as a biodiesel catalyst from waste cooking oil. Activities do not yet include technical training or process demonstrations. The activity results showed an increase in the partners' initial understanding. Partners show interest in sustainable waste management. This program results in a mapping of potential waste and partner needs. The output of the activity is documented in reports and follow-up plans. This program is the foundation for the next stage of technology assistance. A simple approach is assessed based on the partner's capacity. Activities support waste reduction and community-based environmental education. 
Penerapan Metode Kansei Engineering dalam Inovasi Produk Sabun Haddad Alwi Hakim Hasibuan; Uun Novalia Harahap; Zaharuddin Zaharuddin; Muhammad Idris
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.182

Abstract

To remain competitive, the soap manufacturing industry must understand consumer preferences. This study uses the Kansei Engineering method to explore consumer desires for bar soap, which links user impressions and emotions (Kansei) to product design elements. Thirteen Kansei words were identified and translated into five design items, each with multiple categories. Using orthogonal design in SPSS 24.0, 16 stimuli were generated. Conjoint analysis was then applied to examine the relationship between Kansei words and product attributes. Results revealed the most preferred combination: round shape, white colour, medium size (85g), moisturizing function, and long-lasting fragrance. These findings guide designing bar soap products that better match consumer expectations.
Analisis Postur Kerja Analis Laboratorium dengan Metode RULA untuk Mengurangi Risiko MSDs Febri Gilang Arjuna; Uun Novalia Harahap; Yetti Meuthia Hasibuan; Haniza Haniza
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.312

Abstract

This study aims to analyze the working postures of laboratory analysts using the Rapid Upper Limb Assessment (RULA) method to identify the risk of Musculoskeletal Disorders (MSDs). Observations were conducted during primary laboratory activities to document body posture, joint angles, and work duration. The RULA assessment indicated moderate to high risk, suggesting the need for immediate corrective actions. Major contributing factors to MSD risk included bent working postures, repetitive arm movements, and non-ergonomic workstation design. Recommended improvements involve workstation adjustment, posture correction, and the application of ergonomic principles. This study is expected to support MSD prevention efforts and improve comfort and productivity among laboratory analysts.
Studi Eksperimental Kalor Biodiesel dari Minyak Goreng Limbah Kiki Syahbana Sembiring; Muhammad Idris; Yetti Meuthia Hasibuan; Uun Novalia Harahap; Darianto Darianto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.160

Abstract

The ever-increasing global energy demand necessitates the development of environmentally friendly and sustainable alternative fuels. Biodiesel is a potential solution, mainly when produced from used cooking oil through the transesterification process. This study aims to evaluate the effect of reaction time on the calorific value of biodiesel using the linear regression method. The calorific value was chosen as the primary parameter because it reflects the energy produced by the fuel. The study analyzed experimental data correlating the transesterification reaction time with the biodiesel calorific value. The results showed that the optimal reaction time was 80 minutes, yielding the highest calorific value of 41.35 MJ/kg, exceeding the ASTM D6751 standard. However, the effect of reaction time on calorific value was not statistically significant, with a P-value of 0.67 and a regression coefficient of 0.02. The decrease in calorific value after 80 minutes is likely caused by overreaction, reducing efficiency. The findings indicate that reaction time is not the sole factor influencing biodiesel calorific value. Future research recommendations include incorporating variables such as reaction temperature and raw material molar ratio to enhance model accuracy. This study is expected to provide a foundation for developing high-quality biodiesel that meets international standards.
Co-Authors , Rini Halila Nasution Abdud Azis Syarif Abdul Azis Syarif Abdul Aziz Syarif Adi Prasatya Agung Akhirullah Agung Al Balad Al Hafiz Nurmansyah Batubara Alda Febriansyah Chaniago Alfi Dwanda Putra Mulia Anggi Muhaimin Anggi Pratama Anggih Prasetyo Wibisono Arma Dani Assya Maya Siregar Aziz Ahmadi Syam Bagas Sriwanto Bobby Umroh Chairunnisa Nasution Darianto Darianto Denny Fachri Mariadi Denny Walady Utama Deny Satria Diah Elliza Carolina Hutabarat Diana Suita Dirjo Silaban eddy eddy Eddy Kotto edy edy Elsera, Marina Eva Vivi Aniceta Situmorang Farur Reza Nasution Febri Gilang Arjuna Haddad Alwi Hakim Hasibuan Haniza Hendri Putra Jaya Gulo Ilhamdi Syahputra Indra Hermawan Iswandi Iswandi Jekson Priadi Pasaribu Jufrizal Jufrizal Jumadi Suratman Jumadi Suratman Khairul Amri Khoirul Amri Kiki Syahbana Sembiring Liza Fitriana Lorenzo Andreas Mahliza Nasution Mariras Sitepu Mifthahul Ahyan Muhammad Fazri Muhammad Idris Muhammad Idris Muhammad Rizki Permana Nadia Puspita Nurul Atikah Rafika Apriani Pratiwi Rahmat Wahyu Raymond Christian Silaban Rini Halila Nasution Rini Halilla Nasution Rizky Ramadhan Sekar Ayu Ony Ningrum Siregar, Masdania Zurairah Siregar, Zufri Hasrudy Sumardi Juniwan Sinaga Supriatno, Supriatno Suriandi Syafruddin Ritonga Thony Herman Napitu Tino Hermanto Tri Gartoa Wan Krisman Hia Yetti Meuthia Hasibuan Yetti Meuthia Hasibuan Yetti Meuthia Hasibuan Meuthia Hasibuan Yetti Muthia Hasibuan Yohana Siahaan Yopan Rahmad Aldori Zaharuddin Zaharuddin