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All Journal Jurnal Kesehatan Lingkungan indonesia KONSELI: Jurnal Bimbingan dan Konseling (E-Journal) Elkawnie Jurnal Hasil Penelitian Industri JURNAL SERAMBI ILMU Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL PENDIDIKAN TAMBUSAI SCAFFOLDING: Jurnal Pendidikan Islam dan Multikulturalisme El-Mujtama: Jurnal Pengabdian Masyarakat International Journal of Social Service and Research Makara Journal of Technology JURUTERA (Jurnal Umum Teknik Terapan) Jurnal Komprehenshif El-Mujtama: Jurnal Pengabdian Masyarakat Jurnal Maisyatuna JURNAL REKAYASA KIMIA & LINGKUNGAN
Mahidin Mahidin
Jurusan Teknik Kimia Universitas Syiah Kuala, Jl. Syech Abdurrauf, No. 7, Banda Aceh - Indonesia
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Modeling and Simulation on NOx and N2O Formation in Co-combustion of Low-rank Coal and Palm Kernel Shell Mahidin, Mahidin; Gani, Asri; Khairil, Khairil
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 2 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

NOx and N2O emissions from coal combustion are claimed as the major contributors for the acid rain, photochemical smog, green house and ozone depletion problems. Based on the facts, study on those emissions formation is interest topic in the combustion area. In this paper, theoretical study by modeling and simulation on NOx and N2O formation in co-combustion of low-rank coal and palm kernel shell has been done. Combustion model was developed by using the principle of chemical-reaction equilibrium. Simulation on the model in order to evaluate the composition of the flue gas was performed by minimization the Gibbs free energy. The results showed that by introduced of biomass in coal combustion can reduce the NOx concentration in considerably level. Maximum NO level in co-combustion of low-rank coal and palm kernel shell with fuel composition 1:1 is 2,350 ppm, low enough compared to single low-rank coal combustion up to 3,150 ppm. Moreover, N2O is less than 0.25 ppm in all cases.Keywords: low-rank coal, N2O emission, NOx emission, palm kernel shell
A Comparison of Energy Profile between Castilla Leon, Spain and Aceh, Indonesia Mahidin, Mahidin; Khairil, Khairil; Martin, Carmen; Villamanan, Miguel A.; Segovia, Jose J.; Chamorro, Cesar R.
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 4 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

A comparative study on energy production and consumption between Aceh, Indonesia and Castilla Len, Spain has been conducted. Analysis was carried out on the statistical data such as population, GDP, energy production and energy consumption. Some interesting results were obtained. An average energy production during 2001 2004 in Aceh is up to 28 times of the average energy production in Castilla Len; however, the average energy consumption during those four years is only 16.74% of the average energy consumption of Castilla Len. Aceh's average GDP from 2001 to 2004 is 3,357.16 million Euros, stands at only 8.15% of Castilla Len's average GDP about 41,175.75 million Euros.Keywords: economic growth, final energy consumption, GDP, primary energy production
The Function of Content Mastery Services in Fostering Students' Interest in Learning in Senior High School Susmita Br. Siregar, Tiya Modi; Mahidin, Mahidin
Scaffolding: Jurnal Pendidikan Islam dan Multikulturalisme Vol. 5 No. 2 (2023): Pendidikan Islam dan Multikulturalisme
Publisher : Institut Agama Islam Sunan Giri (INSURI) Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/scaffolding.v5i2.2893

Abstract

The purpose of this research is to find out how the content mastery service of SMA Muhammadiyah 09 Kualuh Hulu helps students become more interested in learning. Students' study habits are developed due to this learning, and if they already have good study habits, they must be maintained. This research uses qualitative methods with a Case Study approach. The sample of this study consisted of 36 students of SMA Muhammadiyah 09 Kualuh Hulu. The data collection instruments of this research are in-depth interviews and observation. The data analysis technique used is data reduction; data reduction is a thinking process that requires a depth of insight; after reducing the data, the data is described, or what is often called data presentation; after the data is processed properly, the researcher concludes. The data validity test technique in this study uses triangulation by asking the same thing with different sources. The results showed that the content mastery services provided positively impacted students' interest in learning. This result is supported by the assessment given to students in the written test group every time they complete the material mastery activities and observed by the observation that students often lose focus in learning and often do not write school notes when learning takes place and after the implementation of student access to content mastery services it is increasingly clear that the increase in learning interest is growing towards students.
Impact of Pyrolysis Temperature and Jatropha Seed Adhesive on the Properties of Bio-charcoal from Young Coconut Waste Anwar, Khairul; Mahidin, Mahidin; Ramli, Ichwana; Faisal, Muhammad; Sitorus, Agustami
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1372-1382

Abstract

This study assesses the characteristics of bio-charcoal from young coconut waste with the effect of variations in pyrolysis temperature and the addition of Jatropha seed adhesive. The physical and chemical parameters of bio- charcoal from three temperature variation treatments (380°C, 430°C, and 480°C) and three adhesive concentrations (15%, 20%, and 25%) were analyzed, including moisture content, ash content, volatile matter, calorific value and fixed carbon. In addition, the application of ANOVA and DMRT were used to evaluate the significant differences between the various treatments with significant p-value ≤ 5%. The optimal result was obtained at temperature of 430°C and 25% adhesive indicating a calorific value of 6421 cal/g, moisture content of 6.1%, ash content of 7.6% volatile matter of 7.7% and fixed carbon of 78.7%. The findings reveal that adhesive content significantly affects bio-charcoal quality, while temperature variations influence moisture content and heating value. This study concludes that optimizing temperature and adhesive concentrations can yield high-quality bio-charcoal, offering a cleaner, sustainable source. Keywords: Adhesive, DMRT, Jatropha curcas, Pyrolysis, Young coconut waste.
Pengaruh Bimbingan Karir Terhadap Kemantapan Keputusan Karir Siswa Kelas XII SMK Swasta Bandung 1 Lubis, Aismat Ihsan; Mahidin, Mahidin; Syukri, Makmur
Maisyatuna Vol. 5 No. 1 (2024): Januari : Jurnal Maisyatuna
Publisher : STAI Denpasar Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53958/mt.v5i1.442

Abstract

This research aims to find out: analyze whether there is an influence of career guidance on the career stability of Class XII students at Private Vocational School I Bandung. This type of research is quantitative quasi-experiment (quasi-experiment) with pre-test and post-test one group design. The subjects of this research were 32 students in class XII of Private Vocational School I Bandung. The sampling technique used purposive sampling. The data for this research was taken using a self-confidence questionnaire with 30 valid and realistic questions, then the data was analyzed using the SPSS test. Pre-test data to overcome feelings of lack of self-confidence obtained an average score of 2.045. Meanwhile, post test data on self-confidence obtained an average score of 3.875. This means that the average score of students after receiving group guidance services for career stability is higher than before receiving career guidance services for stability. From data analysis it is obtained that Fcount = 15 with a = 0.05 while Ftable = 4. From these data it can be seen that Fcount > Ftable where 15>4. This means that the hypothesis is accepted. The influence of career guidance on student career stability by contributing 33.4% to increasing the career stability of Class XII students at Private Vocational School I Bandung. This shows that there is an influence given or the hypothesis can be accepted.
Identification of The Driving Factors Behind The Transformation of The Landscape in Sabang, Aceh, Indonesia, Based on Local Perception Azwar, Faisal; Achmad, Ashfa; Mahidin, Mahidin; Irwansyah, Mirza
Elkawnie Vol. 11 No. 2 (2025)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v11i2.25043

Abstract

Abstract: Information on land use changes and land cover change studies to understand the dynamics of landscape change is very useful for planning sustainable landscape management. Changes to the landscape not only have an impact on people's welfare but also on the way people view and use the landscape. Land-based investments have implications for spatial development and influence landscape dynamics. Cities continue to experience growth, including cities on small islands. The city of Sabang, whose territory is small islands in Aceh Province, Indonesia, is experiencing an increase in local population, immigration, and government policy encouragement to improve the economy. It is worth paying attention to knowing the dynamics of landscape change and the driving factors based on local perceptions.  It is important to understand the patterns of land use and land cover changes from 2013 to 2021, as well as the driving factors based on local community perceptions that may influence future spatial planning and land utilization in Sabang City.  This study uses mixed methods consisting of analysis of land use and land cover change patterns based on remote sensing using ArcGIS and TerrSet software on Spot 6 and Spot 7 image data to provide information on the transition of land cover change. The results of the analysis of changes in land use and land cover from 2013 to 2021 and the driving factors based on local perceptions from elements of Sabang City society were carried out through questionnaires and semi-structured interviews covering 120 households. To assess the drivers of changes in the Land Use and Land Cover (LUCL) of the Sabang City area, which were analyzed using the Statistical Package for Social Sciences (SPSS) for Windows. The results of the analysis of changes in land use and land cover show that most of the land in Sabang is still covered by forest land in 2021, namely 50%. 175 ha, or 67%, of the growing built-up area is covered, while the infilling and outlying patterns are 44 ha and 42 ha, respectively. Respondents identified 17 driving factors, namely 10 proximate driving factors and 7 fundamental driving factors, as important drivers that contribute to changes in the landscape of Sabang City. The three closest drivers are Residential Areas, Forest Fires and Infrastructure Development. Meanwhile, land needs, changes in land prices and population growth are the three main drivers of LULC changes in Sabang City. Abstrak: Informasi perubahan penggunaan lahan dan studi perubahan tutupan lahan untuk memahami dinamika perubahan lanskap sangat berguna untuk perencanaan pengelolaan lanskap yang berkelanjutan. Perubahan pada lanskap tidak hanya berdampak pada kesejahteraan masyarakat namun juga cara masyarakat memandang dan memanfaatkan lanskap. Investasi berbasis lahan berimplikasi pada pembangunan ruang dan mempengaruhi dinamika lanskap. Kota-kota terus mengalami pertumbuhan, termasuk kota di pulau kecil. Kota Sabang yang wilayahnya merupakan pulau-pulau kecil di Provinsi Aceh, Indonesia mengalami peningkatan populasi masyarakat lokal, imigrasi serta dorongan kebijakan pemerintah dalam meningkatkan perekonomian, patut menjadi perhatian untuk mengetahui dinamika perubahan lanskap serta faktor pendorongnya berdasarkan persepsi lokal. Bagaimana pola penggunaan lahan dan tutupan lahan yang terjadi dalam waktu tahun 2013-2021, dan bagaimana persepsi masyarakat lokal dalam melihat faktor pendorong perubahan penggunaan lahan dan tutupan lahan di Kota Sabang.  Studi ini menggunakan metode campuran yang terdiri dari analisis pola perubahan penggunaan lahan dan tutupan lahan berbasis penginderaan jauh menggunakan software ArcGIS dan TerrSet terhadap data Citra Spot 6 dan Spot 7 yang memberikan informasi transisi perubahan tutupan lahan.  Hasil analisis perubahan penggunaan lahan dan tutupan lahan 2013-2021, kemudian faktor pendorongnya berdasarkan persepsi lokal dari unsur masyarakat Kota Sabang dilakukan melalui kuesioner dan wawancara semi-terstruktur yang mencakup 120 rumah tangga. Untuk menilai pendorong perubahan penggunaan lahan dan tutupan lahan wilayah Kota Sabang yang dianalisis menggunakan Statistical Package for Social Sciences (SPSS) untuk Windows. Hasil analisis perubahan penggunaan lahan dan tutupan lahan menunjukkan sebagian besar lahan di Sabang masih ditutupi oleh lahan hutan pada tahun 2021 yaitu sebesar 50%, telah turun luasnya sekitar 7% dibanding tahun 2013. Lahan terbangun di Kota Sabang sebagian besar tumbuh dengan pola perluasan/ekspansi seluas 175 ha atau mencakup 67% dari luas area terbangun yang bertumbuh, sedangkan pola infilling dan outlying masing-masing seluas 44 ha dan 42 ha. Responden mengidentifikasi 17 faktor pendorong, yaitu 10 faktor pendorong terdekat dan 7 faktor pendorong mendasar sebagai pendorong penting yang berkontribusi terhadap perubahan lanskap Kota Sabang. Tiga besar pendorong terdekat adalah kawasan permukiman, kebakaran hutan dan pembangunan infrastruktur. Sedangkan Kebutuhan Lahan, Perubahan harga lahan dan Pertumbuhan penduduk merupakan tiga besar pendorong mendasar perubahan LULC di Kota Sabang
Co-Authors - Darmadi Abdul Hadi Achmad, Ashfa Agustami Sitorus, Agustami Agustina, Liana Alhamidi Yusran, Alhamidi Angi, Nur Fadila Asri Gani Ayyub, Muhammad Azwar, Faisal Baehaqi Carmen Martin Cesar R. Chamorro Cut Mutiawati Cut Nurmaliah Delviga, Delviga Dhedia, Muhammad Fannka Djuned, Fauzi Muhammad Hamdani Hamdani Hani, M. Reza Hasibuan, Ali Daud Hasibuan, Nurmiah Hisbullah Hisbullah Hrp, Muhammad Royhan Husni Husin Izarul Machdar, Izarul Jose J. Segovia Ketut Tirtayasa Khairil Khairil Khairul Anwar Kusuma, Debby Widya Lubis, Aismat Ihsan Mariana Mariana Mashadi Mashadi Meuthia Busthan, Meuthia Mia Aulia, Mia Miguel A. Villamanan Mirza Irwansyah Muhammad Dani Supardan Muhammad Faisal Muhammad Nizar Muhammad Syukur Muhtadin Muhtadin Nuraida Nuraida Nurbaini, Nurbaini Nurika Khalila Daulay Oktaviani, Coryna Puspita, Anggun Ramli, Ichwana Razali, Nasrullah Reza, Alvan Ade Sembiring, Rinawati Siregar, Rahmah Sudana Siti Sahara Sudarmi, Raudhatul Aulianatia Suhada, Deksa Imam Susmita Br. Siregar, Tiya Modi Syahiddin Dahlan Said Syamsiar, Syamsiar Syukri, Makmur T.M.I. Mahlia Teuku Azuar Rizal Utami, Putri Agus