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All Journal BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan Diklabio: Jurnal Pendidikan dan Pembelajaran Biologi Jurnal Inotera Jurnal Optimalisasi Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar Jurnal Abdi Insani Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Sains dan Edukasi Sains SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Jurnal Jeumpa Jurnal Pengabdian Masyarakat (ABDIRA) Prosiding Seminar Nasional Biologi, Teknologi dan Kependidikan (Biotik) BIOMA : Jurnal Biologi dan Pembelajarannya Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) JIPI (Jurnal IPA dan Pembelajaran IPA) ZONA: Jurnal Pengabdian Masyarakat Journal Serambi Engineering (JSE) The Indonesian Journal of Computer Science SciencePlus
riza ulhaq
Program Studi Biosains Hewan, Fakultas Pertanian, Universitas Teuku Umar
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy 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 Dentistry 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 Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Assessment of Exhaust Gas Emission Impacts on Air Quality Surrounding PT PLN Nusantara Power, Nagan Raya Samsidar, Samsidar; Ulhaq, Riza
SciencePlus Vol. 1 No. 2 (2025): SciencePlus
Publisher : Barkah Publishing

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Abstract

Air pollution is an environmental issue that has a broad impact on human health and ecosystem balance. PT PLN Nusantara Power UP Nagan Raya as a coal-fired steam power plant (PLTU) has the potential to produce exhaust emissions that can reduce air quality in the surrounding area. This study aims to assess the impact of exhaust emissions on ambient air quality in organizations around the PLTU. The study uses a quantitative descriptive approach by measuring several air pollutant parameters, namely SO₂, NO₂, CO, O₃, NMHC, PM₁₀, PM₂.₅, and Pb at the UA-1 observation point located east of the PLN Nusantara Power, then compared with ambient air quality standards based on PP No. 22 of 2021. The measurement results show that all pollutant parameters are still below the national air quality standard threshold, including SO₂ <33.438 μg/m³, NO₂ <6.143 μg/m³, CO 2298.91 μg/m³, PM₁₀ 22.80 μg/m³, and PM₂.₅ 16.11 μg/m³. This indicates that at the time of the measurement, coal burning activities at the PLN Nusantara Power had not had a significant impact on air quality in surrounding organizations. However, continuous monitoring is still needed to ensure air quality remains safe and prevent potential long-term health risks.
The Influence of The Problem-Based Learning with Radical Constructivism Module on Students' Problem-Solving Skills Ulhaq*, Riza; Huda, Ismul; Rahmatan, Hafnati; Fathiya, Nir; Chan, Kristina Merencillo
Jurnal Pendidikan Sains Indonesia Vol 12, No 2 (2024): APRIL 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v12i2.37609

Abstract

Problem solving skills (PSS) are one of the high-level thinking skills that must be possessed by students. This skill will help students apply scientific content to solve problems in real life. The purpose of this study was to determine the effect of problem based learning (PBL) models with a radical construktivism module on PSS. Data were collected in February to March 2022. The method in this study used an experimental method with nonrandomized post test only control-group design. This research was conducted in two classes: the experimental class using PBL model learning with radical constructivism module and the control class that only using PBL model learning. The samples were 160 students. The instrument was tests to assess PSS. Data analysis used independent sample t-test to determine effect of PBL model learning with radical constructivism module on PSS. T-test results showed that value sig 0,05. The result showed that students who received PBL model learning and the radical constructivism module obtained significantly better PSS compared to students who only received PBL model learning
Pengaruh Modul Interaktif Digital Berbasis Problem Based Learning Terhadap Keterampilan Pemecahan Masalah Ulhaq, Riza; Syafrizal; Widarta, Fajar Okta; Fathiya, Nir
Diklabio: Jurnal Pendidikan dan Pembelajaran Biologi Vol 9 No 2 (2025)
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diklabio.9.2.276-283

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh pembelajaran modul interaktif digital berbasis PBL terhadap keterampilan pemecahan masalah peserta didik. metode penelitian menggunakan desain eksperimental pre-test post-test control group. Sampel penelitian sebanyak 80 peserta didik yang terdiri dari kelas eksperimen sebanyak 40 peserta didik dan kelas kontrol sebanyak 40 peserta didik, kelas eksperimen akan diberikan pembelajaran modul interaktif berbasis PBL sedangkan kelas kontrol hanya dengan pembelajaran PBL saja. Penelitian dilaksanakan di SMPN 1 Aceh Barat pada semester ganjil tahun ajaran 2023/2024. Instrumen tes yang digunakan adalah tes uraian keterampilan pemecahan masalah sebanyak 10 soal, penskoran data keterampilan pemecahan masalah berdasarkan panduan rubrik penilaian, dihitung rata-rata dan persentase kategori skor. Selanjutnya dianalisis menggunakan uji independent sample t-test untuk melihat pengaruh perlakuan terhadap keterampilan pemecahan masalah peserta didik. Hasil analisis diperoleh t hitung > t tabel (3,124 >1,990), bahwa penerapan modul interaktif digital berbasis PBL berpengaruh terhadap keterampilan pemecahan masalah peserta didik.
Birds Diversity Mapping using Quantum GIS For Ecotourism in The Mangrove Forest of Kuala Bubon, West Aceh Ulhaq, Riza; Juliwardi, Ilham
The Indonesian Journal of Computer Science Vol. 12 No. 5 (2023): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v12i5.3421

Abstract

The discourse on developing Kuala Bubon mangrove forest area in West Aceh as an ecotourism location has received a lot of sympathy and support among the community, considering that this forest has a high level of diversity of flora and fauna, one of which is bird species. In several ecotourism locations, birds attract tourists by enjoying various entertainment related to birds, such as bird watching, tours of bird habitats, and observing birds in the wild. The research was carried out in the Kuala Bubon mangrove forest, West Aceh, in September 2023. This research used a quantitative approach, calculating the level of diversity and mapping distribution based on bird location coordinates. The data collection method uses the point count and line transect method. Analysis of bird species diversity data using the Shannon-Wienner Diversity Index (H') formula was then carried out by mapping the coordinates of bird presence using the Quantum Gis software. The research results obtained 37 bird species from 22 families with a diversity index of 3.07 (high diversity), two species with the status of Near Threatened (Aegithina Viridissima) and Vulnerable Under (Acridotheres javanicus). Mapping bird species diversity with Quantum Gis provides opportunities for developing bird ecotourism, such as planning optimal bird-watching routes after knowing the distribution of bird species.
IDENTIFICATION OF THRESHER MAINTENANCE MECHANISMS IN A PALM OIL PROCESSING PLANT AT PT. BEURATA SUBUR PERSADA (BSP), NAGAN RAYA Ahmad Arafi; Riza Ulhaq; Abdiel Khaleil Akmal; Fajar Okta Widarta
SciencePlus Vol. 2 No. 1 (2026): SciencePlus
Publisher : Barkah Publishing

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Abstract

In the era of globalization, industrial development requires companies to maintain efficient and sustainable production systems. One of the critical components in palm oil processing is the thresher machine, which functions to separate fruits from fresh fruit bunches (FFB). This study aims to analyze the maintenance mechanism of the thresher machine at PT. Beurata Subur Persada using a qualitative descriptive approach. Data were collected through interviews, direct observations, and literature studies. The results show that the thresher machine plays a vital role in ensuring the continuity of the production process, and its performance is highly dependent on proper maintenance practices. The company implements a preventive maintenance system consisting of routine, weekly, monthly, and annual activities, including inspection, cleaning, repair, and component replacement. These maintenance practices have proven effective in improving machine reliability, extending component service life, and minimizing unexpected failures. However, several challenges remain, such as component wear, potential leakage, and insufficient maintenance documentation. Therefore, improvements in maintenance management, including systematic recording, enhanced monitoring, and workforce training, are necessary to optimize machine performance. Overall, effective preventive maintenance contributes significantly to operational efficiency and sustainability in palm oil production.
Pengelolaan Ekowisata Pesisir Lhok Bubon yang Mengintegrasikan Kearifan Lokal dan Prinsip Konservasi Pesisir.onservation Principles Area Izwar, izwar_123; Izwar, Izwar; Ulhaq, Riza; Saputra, Akmal; Rahmatika Latif, Ikhwan; Yusrizal, Yusrizal
Biotik Vol 14 No 1 (2026): JURNAL BIOTIK
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/biotik.v14i1.34259

Abstract

This study aims to analyze the capacity and balance of Lhok Bubon tourism based on sustainable ecotourism and Acehnese local wisdom. The research approach is sequential, starting with quantitative analysis and then deepened qualitatively. Based on an area of ​​120 hectares, the maximum capacity of the area reaches 20,700 visitors per day with two visit cycles. The marine tourism suitability analysis produces a score of 500 in the suitable category. Supporting parameters include depth in the very suitable category, freshwater sources of sandy beaches, and open land cover also have a very suitable category, the basic material of the coral sand substrate has a suitable category. Constraints found in air clarity are less suitable. For snorkeling and diving, most physical parameters of waves, current speed, pH, salinity, and air clarity are in the S1 (Very Suitable) category, except for coral reef diversity (<25%) which is in the N (Not Suitable) category. Overall, Lhok Bubon Beach is worthy of being developed as an ecotourism habitat, but by helping with coral reef restoration, facilities, and strengthening local values, the novelty in this research is the integration of carrying capacity, tourism suitability, and local wisdom of Aceh, in addition to the quantitative-qualitative sequential approach in assessing coastal ecotourism. Keyword: Coastal Conservation; Ecotourism; Lhok Bubon; Local Wisdom
Sistematik Review: Meta-Analisis Beban Kerja Karyawan dan Upaya Penanggulangannya Fajar Okta Widarta; Riza Ulhaq; Gaustama Putra; Khairul Hadi
Jurnal Optimalisasi Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v12i1.14023

Abstract

Employee productivity and workload are closely correlated. Employees are frequently physically and psychologically burdened by high goals and unfavorable working conditions. Industry participants and business actors must be aware of these problems and the steps that can be taken to solve them. In order to help business actors and industry participants solve connected issues, this study attempts to compile a variety of research findings on employees' physical and mental pressures and attempts to overcome them. The Publish or Perish 8 program was used to collect data via meta-analysis. The Google Scholar database was used to compile articles published between 2022 and 2024. Data collecting, data reduction, data presentation, and conclusion-drawing were the phases of the meta-analysis that produced 34 papers. According to the survey, employees' mental workload problems were more common than their physical workload. The issue of employee workload can be resolved by routinely assessing employee workloads to ascertain when hiring more personnel is required, upholding a safe and comfortable workplace, allocating workloads equitably, supplying sufficient personal protective equipment, and paying all employees appropriately
Pendampingan Siswa Peserta Olimpiade Sains Nasional dan Olimpiade Madrasah Indonesia di Madrasah Aliyah Negeri 1 Aceh Barat Fajar Okta Widarta; Riza Ulhaq; Muhammad Farhan Putra Emil; Zahra Rodliyatam Mardliyah
Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar Vol 8, No 1 (2026): Januari-Juni
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/baktiku.v8i1.13525

Abstract

Olimpiade Sains Nasional (OSN) and Olimpiade Madrasah Indonesia (OMI) are two prestigious national science competitions that serve as benchmarks for the quality of education in schools across Indonesia. Madrasah Aliyah Negeri 1 Aceh Barat is one of the leading schools in Aceh Barat District, Aceh Province. The partner institution faces an issue of a lack of competent teachers to guide students in preparing for both activities. The aim of this community service activity is to provide learning assistance to the students of this school. The stages of this service activity consist of the planning stage, the implementation stage, and the evaluation stage. Based on the evaluation results, it appears that there has been an increase in knowledge and readiness among students in facing the OSN and OMI competitions. The author suggests that this activity should continue to be held every year and be emulated by other schools in Aceh Barat as a strategic effort to enhance students' readiness for these two prestigious events.
Pelatihan Perbanyakan Trichoderma sp. Berbasis Media Jagung Pecah pada Kelompok Tani Kacang Tanah Inti Sari Rayhan Amadius Weihan; Riza Ulhaq; Noval Suhendra; Dewi Andriani; Putri Mustika Sari; Nhyra Kamala Putri; Tsamarah Nur Rahmah; Maulidil Fajri
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 6, No 4 (2026): Abdira
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v6i4.2340

Abstract

Farmers' reliance on synthetic chemical inputs in Tegal Sari Village poses a major constraint in peanut cultivation due to economic limitations. This community service program aims to enhance the self-reliance of the Inti Sari Farmers Group in producing biological agents through training on the propagation of Trichoderma sp. on cracked corn media, based on the principles of the Low External Input Sustainable Agriculture (LEISA) system. The implementation method comprised theoretical socialization, practical demonstration (workshop), as well as monitoring and evaluation. The results indicated a significant 55% increase in farmers' cognitive understanding, with the average score rising from 30% (pre-test) to 85% (post-test). Furthermore, the farmers successfully mastered aseptic inoculation techniques, as evidenced by the growth of high-quality Trichoderma spores on cracked corn media produced through their independent practice. In conclusion, this training was effective in equipping farmers with appropriate technology skills, enabling them to reduce production costs while promoting more environmentally friendly and sustainable peanut farming practices in Pante Ceureumen District.
Co-Authors Abdiel Khaleil Akmal Agam Syahputra, Rizki Ahmad Arafi Akmal Saputra Albayani, Amalia Zahra Alfianda, Rudy Amin, Muslihun Aminuyati Arga, Dwi Prasiska Lena Arie Saputra Arrazy Elba Ridha Bahagia Bahagia Chan, Kristina Merencillo Dewi Andriani Dewi Andriani Eka Putri, Nafisah Eka Putri Eka Putri, Suci Fajar Okta Widarta Fitry Hasdanita Gaustama Putra Hafnati Rahmatan Hasnita, Hasnita Hawarul Aini Iing Pamungkas Ikhwan Rahmatika Latif Ilham Juliwardi Irawan, Heri Tri Ismul Huda Itawarnemi, Hilmina Izwar, Izwar Jasmi Jastri Nurul Hayani Jekki Irawan Juliwardi, Ilham Kamisan Kasmawati Kasmawati Khairul Hadi Khairul Hadi Lestari, Rachmatika Lisa Maulidar Mairizal, T. Mardliyah, Zahra Rodliyatam Maulida, Rahmi Maulidil Fajri Muhammad Ardiansyah Muhammad Asiraf Muhammad Farhan Putra Emil Muzakir Nasution, Anisah Nhyra Kamala Putri Nir Fathiya Noval Suhendra Puspa, Vivera Ruselli Putri Arisma, Mawaddah Putri, Nhyra Kamala Qariza, Maulin Hayatun Rahmah, Tsamarah Nur Rahman, Anggita Rayhan Amadius Weihan Reval Legar Seprijar Risardi, Merta Rivaldi, Aldi Rizki Agam Syahputra Rizky Aprinas Gading Samsidar Samsidar Sari, Putri Mustika Sarioda Setyowati, Mita Sofiyanurriyanti syafrizal T. M. Azis Pandria Ulhusna, Fitrah Asma Wiwit Artika Yasrizal Zuhra, Siti