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All Journal Jurnal Ilmu Lingkungan Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Usia Dini Jurnal Sains dan Teknologi Jurnal Teknologi Pendidikan JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Jurnal IPTEK JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) JMM (Jurnal Masyarakat Mandiri) Journal of Education and Instruction (JOEAI) International Journal of Community Service Learning Journal of Tropical AgriFood Journal of Engineering and Scientific Research (JESR) Jurnal Sistem Teknik Industri Food ScienTech Journal Jurnal Riset Teknologi Pencegahan Pencemaran Industri Ruwa Jurai: Jurnal Kesehatan Lingkungan International Journal of Tourism and Hospitality in Asia Pasific Vokatek : Jurnal Pengabdian Masyarakat Journal Serambi Engineering (JSE)
Yosef Barita Sar Manik
Environmental Engineering Study Program, President University, Cikarang, Indonesia
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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Material flow analysis of white bread production: Case study at a home-scale bakery production in Surabaya Sar Manik, Yosef Barita; Radia, Sabrina Alia; Putri, Nurul Ayanda; Azwar, Arrizal; Amaral, Joaozinho Jubileu San Sao
Journal of Tropical AgriFood Volume 8 Nomor 1 Tahun 2026
Publisher : Department of Agricultural Products Technology, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35941/jtaf.8.1.2026.24031.76-84

Abstract

Bread production in urban areas of Indonesia requires significant resource inputs (total 150 kg: 85.21 kg flour, water 52.33 kg, sugar 4.26 kg, salt/yeast 1.74 kg each, oil 1.40 kg, butter 1.32 kg, eggs 2.00 kg for 135 kg/day of bread ready for distribution) while also producing solid waste and emissions, thus requiring an efficiency assessment through Material Flow Analysis (MFA) for sustainability. This study applied MFA with a gate-to-gate approach to seven operational units: weighing, mixing, fermentation, dough forming, baking, cooling, and packaging at a home industry in Surabaya, using primary data from structured interviews (October 29, 2025) and secondary data from literature. The results show high efficiency with a Product Yield of 90%, Organic Waste of 3.34%, NPOR (Non-Product Output Ratio) of 10.01%, and total emissions and steam of 6.67%; main losses: 7.6 kg CO₂ (mixing/fermentation), trim waste 3 kg, exhaust 2.4 kg, steam 1.7 kg (mass imbalance of 0.515 kg due to rounding/evaporation). MFA effectively supports sustainable bakery production through process optimization and waste valorization.
Hazard Identification, Risk Assessment and Control (HIRAC) of Fablab Setting and Infrastructure at President University Manik, Yosef Barita Sar; Manurung, Gracia Natalie Emmanuela; Kimberly, Jaqueline Andrea; Rahayu, Wanti; Haidar, Muhammad Labib
JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan Vol 23 No 1 (2026): Jurnal Kesehatan Lingkungan Volume 23 No. 1, Januari 2026
Publisher : Poltekkes Kemenkes Banjarmasin Jurusan Kesehatan Lingkungan Banjarbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31964/jkl.v23i1.1100

Abstract

This study demonstrates the methodological contribution of applying the Hazard Identification, Risk Assessment, and Control (HIRAC) framework to a previously underexplored setting: an academic Fabrication Laboratory (FabLab). Key findings reveal that the facility’s pre-assessment safety profile was medium-high, primarily due to critical hazards such as exposed electrical cables and obstructed emergency equipment. By employing a systematic, qualitative approach and implementing a tailored control plan based on the hierarchy of controls, the study successfully reduced the overall risk level to low-medium. The research concludes that the HIRAC method offers a replicable and effective model for proactive risk management in academic makerspaces, ultimately enhancing safety culture through structured assessment and prioritized intervention.
Instrumen Penilaian Derajat Kecanggihan pada Sistem E-Learning Pendidikan Menengah Atas Lumbangaol, Anita Febriany; Panjaitan, Santi; Julianti, Metiovani; Sitorus, Felix Arnes; Rahayu, Oky; Hutauruk, Joshua Partogi; Simanjuntak, Indah Debora Salmanita; Tiara, Karen; Manik, Yosef Barita Sar
JOEAI (Journal of Education and Instruction) Vol. 5 No. 1 (2022): JOEAI (Journal of Education and Instruction)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/joeai.v5i1.3381

Abstract

This study aims to determine whether the implementation of e-learning at the secondary education level has met the standards needed by students in developing their potential by formulating criteria and indicators for evaluating technology or e-learning with technometric methodologies. Data collection methods consist of observations, interviews, Focus Group Discussions (FGD) and literature studies and data processing is carried out using a technometric methodology consisting of Technoware, Humanware, Infoware, and Orgaware (THIO) components. The results of the study, it was found that in the instrument of degree of sophistication in high school level e-learning (SMA) there are components of supporting technology in e-learning including technoware, humanware, infoware and orgaware which consists of criteria, sub-criteria, and sub-criteria. In conclusion, the e-learning process at the secondary education level has met the standards needed by students in developing their potential, with the existence of technological components that support e-learning learning. Keywords: e-learning, senior high school, technometric, technoware, humanware, infoware dan orgaware
Hazard Identification, Risk Assessment and Control (HIRAC) On Physical, Health, and Psychosocial Aspects in the Cafeteria of University X Campus Yosef Barita Sar Manik; Alya Syafiqa Z; Jauza Dzihni Alifa; Laura Angeline Hutahean; Melisa Aprina
Vokatek: Jurnal Pengabdian Masyarakat Volume 4: Issue 1 (April 2026)
Publisher : Sakura Digital Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61255/vokatekjpm.v4i1.1126

Abstract

Campus canteens function as essential social and nutritional spaces within universities but often face overlooked Environmental, Health, and Safety (EHS) challenges. This study applies the Hazard Identification, Risk Assessment, and Control (HIRAC) framework in accordance with ISO 45001:2018 to evaluate occupational and environmental risks in the President University campus canteen. Hazard identification was conducted through direct observation, staff interviews, and document review, followed by a semi-quantitative risk assessment using a likelihood–severity matrix. Nineteen routine activities were analyzed and categorized into physical, health, and psychosocial hazards. The assessment identified cooking processes and reckless food consumption as the highest-risk activities (risk value = 12), primarily due to thermal exposure, smoke accumulation, and potential food contamination. Additional medium-risk hazards included unsafe packaging, poor food storage, and limited emergency access, while psychosocial risks such as stress and overcrowding were rated low to moderate. Overall, health-related hazards contributed most significantly to the canteen’s risk profile. The findings indicate that the limited application of HIRAC in canteen operations creates vulnerabilities in everyday food service activities. Strengthening canteen EHS performance requires assigning clear safety accountability, conducting routine risk monitoring, and implementing practical controls such as improved ventilation, allergen labeling, and personal protective equipment. Based on the proposed control measures, the estimated average risk value could potentially decrease from 12 to 4.8, indicating the possible effectiveness of integrating HIRAC into institutional safety management and fostering a more proactive safety culture in educational environments.
Life Cycle Assessment of Indonesian Traditional Food: A Case Study of Lumpia Semarang Yosef Barita Sar Manik; Brilian Maulani Putri; Arifah Arsanti; Alexandra Paloma Sarmento
Food ScienTech Journal Vol 7, No 2 (2025)
Publisher : University of Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/fsj.v7i2.31940

Abstract

The production process of traditional food in small industries can have significant environmental impacts due to energy consumption, agricultural inputs, and emissions generated during production. This research aims to analyze the life cycle of Lumpia Semarang production using a functional unit of 10 portions of Lumpia, where each portion consists of 3 pieces. The gate-to-gate approach was applied using OpenLCA software with the CML-IA Baseline method, ReCiPe Midpoint 2016 (H), and IPCC method, following ISO 14040 and 14044 standards. The results show that producing 10 portions of Lumpia contributes to a global warming potential (GWP100a) of 6.12E+00 kg CO₂ eq, ozone layer depletion of 3.72E-07 kg CFC-11 eq, human toxicity of 1.74E+00 kg 1.4-DB eq, acidification of 5.11E-02 kg SO₂ eq, and eutrophication of 2.56E-02 kg PO₄ eq. The hotspot analysis indicates that the main environmental burdens originate from the raw material production stage, particularly agricultural and livestock inputs (palm fruit bunch, broiler, maize, wheat, and soybean), as well as PET plastic packaging. The frying process also contributes notably to global warming potential due to LPG gas and palm oil consumption, while producing used cooking oil that poses waste management challenges.These findings highlight the need for sustainable improvements in Lumpia production, particularly in resource efficiency, waste management, and the use of eco-friendly packaging to reduce overall environmental impacts. Implementing sustainable sourcing practices, optimizing energy use, and introducing biodegradable packaging alternatives can help minimize the environmental footprint of Lumpia while maintaining its economic and cultural significance.
Life Cycle Assessment of Indonesian Traditional Chicken Satay with Peanut Sauce Yosef Barita Sar Manik; Ignatius David Fernando; Chandra Aden Akbar Pamungkas; Diogo Anibal; Jovian Nathan Sutedja
Jurnal Ilmu Lingkungan Vol 24, No 1 (2026): Januari 2026
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.24.1.232-242

Abstract

This study applies the Life Cycle Assessment (LCA) method to evaluate the environmental impact of traditional Indonesian chicken satay production with peanut sauce. Using a gate-to-gate approach, the research covers raw material acquisition, preparation, and cooking. The analysis follows ISO 14040 and ISO 14044 standards, utilizing OpenLCA software and the Agribalyse_V3.0.1 database. The functional unit is defined as 10 servings of chicken satay based on a recipe from an article on Indonesian cultural food products and food safety tips. The inventory includes input materials such as chicken, peanuts, spices, cooking oil, and energy and water consumption. Outputs include emissions, wastewater, and solid waste. The ReCiPe 2016 (H) midpoint method is used to assess key environmental impacts, including Global Warming Potential (9.41E+00 kg kg CO₂ eq), Ozone Depletion (6.29E-05 kg CFC-11 eq), Human Toxicity (1.65E-01 kg 1,4-DCB), Fine Particulate Matter Formation (1.78E-02 kg PM2.5 eq), Acidification (8.69E-02 kg SO₂ eq), and Eutrophication (1.24E-02 kg N eq). The results show that the largest impact comes from raw material production, particularly poultry farming and peanut cultivation, as well as high energy consumption during cooking. Impact reduction strategies include fuel efficiency, sustainable raw material selection, and food waste reduction. This study provides valuable insights into supporting the sustainability of traditional Indonesian cuisine and improving a more environmentally friendly food production system.
Spatial Analysis of Air Pollution Dispersion from a Stationary Source through Wind Profile: Case Study in North Sumatra Yosef Barita Sar Manik; Aisyah Bestari Siswohartono; Aulia Rizqi Aufa Rafiqi; Brilian Maulani Putri; Daffa Renaldhi Chaniago Mairuhu; Johanes Surya Utama Sede; Nati Nati
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 16 No. 1 (2025): May
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2025.v16.no1.p70-77

Abstract

The iron and steel industry constitutes one of the strategic pillars of economic development. However, it is also a major contributor to global air pollution due to high-temperature fossil fuel combustion inherent in its processes. This study aims to analyze the wind characteristics surrounding a steel and iron industrial facility in North Sumatra and to predict the areas most at risk from pollutant dispersion. Meteorological data from the NASA POWER Project database, covering the period from 2021 to 2024, were processed to examine local wind profiles across two distinct seasonal periods—rainy and dry. The analysis revealed that during the rainy season, winds predominantly originated from the northwest, with moderate speeds ranging from 2.10 to 3.60 m/s, leading to pollutant dispersion mainly toward the southeast (145°, 40%). Conversely, in the dry season, wind direction was more variable, as indicated by a low resultant vector percentage (11%), suggesting multidirectional pollutant spread. Across both seasons, the majority of wind speeds were below 2.10 m/s, which limits vertical atmospheric mixing and enhances pollutant retention near the surface. Air stagnation, particularly during transitional periods between seasons and under temperature inversion conditions, further intensifies pollutant accumulation. These findings underscore the critical role of seasonal wind dynamics in air pollution behavior and provide a scientific foundation for developing effective mitigation strategies. Practical policy implications include the establishment of buffer zones in downwind residential or agricultural areas, the implementation of stricter emission controls during periods of low wind speed and stagnation, and the integration of local wind data into early warning systems for air quality. Such measures are essential to protect public health, especially in high-density areas surrounding PT X, including Medan City, Deli Serdang Regency, Serdang Bedagai Regency, and Tebing Tinggi City.
Developing a Customized Indoor Air Quality Control Parameters for a Precision Machining Lab (Case Study: FabLab at President University) Keisha Fawwaaz; Yosef Barita Sar Manik
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The indoor air quality (IAQ) issues in engineering educational laboratories arise from high equipment usage, material handling, and continuous student presence. Equipment and processes at engineering laboratories have the potential in generating pollutants that may threaten health and safety and therefore, continuous monitoring and evaluation is essential. This study developed a customized framework for indoor air quality (IAQ) management for the engineering laboratories at President University focusing on Precision Laboratory comprising machining, CNC operations, and concrete 3d printing. Two national regulations, Permenkes No. 2/2023 and Permenaker No. 5/2018, were evaluated and mapped with the associated risks arising from relevant laboratory activities, and strictness of threshold limits to ensure comprehensive and protective assessment. As a result, ten key IAQ parameters were identified: temperature, relative humidity, air velocity, noise level, PM2.5, PM10, TSP, carbon dioxide (CO₂), carbon monoxide (CO), and volatile organic compounds (VOC) as critical parameters for digital manufacturing lab. These parameters represent thermal comfort, biological, physical, and chemical hazards from overall laboratory processes and human occupancy. The systematic IAQ parameter framework developed from this study serves as a benchmark for educational engineering laboratories nationwide in operationalizing the compatibility with Indonesian engineering higher education accreditation requirements.
Analysis of Stakeholder Attitudes toward Sustainable Tourism Development of Lake Toba Area Elserida Nababan; Santi Agustina Manalu; Benedikta Anna Haulian Siboro; Yosef Manik
International Journal of Tourism and Hospitality in Asia Pasific Vol 4, No 3 (2021): October 2021
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/ijthap.v4i3.1195

Abstract

The purpose of this study is to analyze the attitude of stakeholders towards sustainabletourism development in Lake Toba, Indonesia. The indicators used to measurestakeholder’s attitude were adopted from the United Nations World Tourism Organizationand grouped into the human system and ecosystem categories. A total of 361questionnaires were collected from several stakeholders of Lake Toba tourism.Stakeholders’ attitudes were analyzed by multiplying their level of trust in their level ofimportance to the tourism development indicators. The gap between trust andimportance will be mapped on the importance-performance analysis diagram. Theanalysis indicated that the stakeholders' attitude is generally optimistic about the tourismdevelopment in Lake Toba. However, the level of optimism varies among stakeholders.Tourism entrepreneurs and workers have the lowest attitude value compared to localpeople and tourists. Also, stakeholders which have low income or whose income partlyor most comes from the tourism industry or live in the Lake Toba Area are those in thekey priority to consider. They provide the lowest level of trust but provide the highestlevel of importance in development. Decision-makers must give a more serious approachto these stakeholders to get maximum support.
Identification, Characterization and Stakeholder Analysis of Eco-tourism Destinations in Lake Toba Area Natalia Paramitha; Yosef Manik; Anthony Halog
International Journal of Tourism and Hospitality in Asia Pasific Vol 2, No 1 (2019): International Journal of Tourism & Hospitality in Asia Pasific (IJTHAP)
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/ijthap.v2i1.355

Abstract

This study is aimed at identifying and characterizing the eco-tourism destinations in Lake Toba Area as well as mapping and analyzing the stakeholders involved in its value chain and governance. The study was conducted between January and April 2018 whereby a snowball sampling method was employed in identifying the eco-tourism destinations. A semi-structured questionnaire was used to record the characteristics of each destination point in terms of access, attraction, and amenities. Seventeen eco-tourism destinations located in seven regencies along Lake Toba Area have been identified. While access to these tourist destinations has been good enough, the destinations are lacking of attractions. The attractions are limited to natural panoramic views, such a pine forest and spectacular lake view without adequate activity options that can be done by tourist. In terms of supporting amenities, there are still many rooms that require attention and improvement. After that, the study continued by analyzing the role of stakeholders involved directly or indirectly in the operation, governance, and policy of eco-tourism destinations in the lake Toba region. The stakeholders are mapped and clustered based upon their power and interest into four categories: (i) key players, (ii) subjects, (iii) trend setter, and (iv) the crowd. It appears that owner/ administrator, regional tourism office, and several interrelated government offices, such as the Ministry of Tourism and the Ministry of Forestry and Environment are key players which possess high power and interest. On the other hand, private sector, mass media, and local communities are identified as dormant stakeholders or potential trend setters to some extent who possess high power but have low interest. The results of this study are essential inputs for further investigating the socio-economic impacts of the tourism-based development in the Lake Toba through Social Life Cycle Assessment methodology. Keywords: Lake Toba Area, eco-tourism, stakeholder analysis, life cycle assessment
Co-Authors Agus, Fadilatur Rahmi Aisyah Bestari Siswohartono Alexandra Paloma Sarmento Alya Syafiqa Z Amaral, Joaozinho Jubileu San Sao Anthony Halog Arifah Arsanti Aulia Rizqi Aufa Rafiqi Azwar, Arrizal Benedikta Anna Haulian Siboro Bintang Rachel Aprilia Marpaung Brilian Maulani Putri Brilian Maulani Putri Chandra Aden Akbar Pamungkas Christine Nababan Daffa Renaldhi Chaniago Mairuhu Daniel Simanjuntak Diharjo, Deniela Flora Mariyne Wongso Dinda Fairuz Nadhifah Diogo Anibal El Isma Naomi Thorndike Sihombing Elisabeth Pardede Ellen Siagian Elserida Nababan Elvhan Chatisla Cosaken Farhan Saefurrahman Fitri Butarbutar Gabryella Lovia Sihombing Haidar, Muhammad Labib Halog, Anthony Huri, Khalila Kireina Hutauruk, Joshua Partogi Ignatius David Fernando Indri Purba Inna Stephanie Jauza Dzihni Alifa Jayawarsa, A.A. Ketut Jesica Pratiwi Simanjuntak Johanes Surya Utama Sede Jovian Nathan Sutedja Julianti, Metiovani Karlina Gultom Keisha Fawwaaz Keisha Fawwaaz Kimberly, Jaqueline Andrea Laura Angeline Hutahean Lubis, Windy Lumbangaol, Anita Febriany Manurung, Gracia Natalie Emmanuela Marpaung, Bintang Rachel Aprilia Maulidinnisa, Vira Puspita Mayriza, Azka Leona Melani Fera Ayulia Melisa Aprina Monalisa Martha Siahaan Monica Rumondang Panjaitan Nababan, Christine Nababan, Elserida Natalia Paramitha Natasya Pangaribuan Nati Nati Ni Made Amanda Putri Paramerta Pangaribuan, Natasya Panjaitan, Santi Paramitha, Natalia Putri, Brilian Maulani Putri, Nurul Ayanda Radia, Sabrina Alia Rahayu, Oky Rahayu, Wanti Rivasha Nirmala Viandar Putri Rosália Anastácia da Costa Rut Tambun Salsana, Bella Sanlio Gomes Santi Agustina Manalu Saraswati Sintia Widi Siagian, Ellen Siboro, Benedikta AH Sikstin Sihombing Simanjuntak, Donda Natalia R. Simanjuntak, Indah Debora Salmanita Simanjuntak, Jesica Pratiwi Simbolon, Vismeike Septauli Simorangkir , Desi Sinaga, Hotma Sintong Joshua Siahaan Sitorus, Felix Arnes Situmorang, Eva Daoni Veronika Sri Hanna Siahaan Susi Limbong Tambunan, Yohana Tampubolon, Grace Manzoya Tiara, Karen Vismeike Septauli Simbolon Windy Lubis Yohana Tambunan