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All Journal Journal of Geoscience, Engineering, Environment, and Technology Hasanuddin Law Review Sprocket : Journal of Mechanical Engineering Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Jurnal Visi Eksakta AJAD : Jurnal Pengabdian kepada Masyarakat As-Sidanah : Jurnal Pengabdian Masyarakat Ulead : Jurnal E-pengabdian Jurnal Polimesin ATDS Saintech Journal of Engineering Tanjungpura Legal Review Journal of Renewable Engineering
Parulian Siagian
Universitas HKBP Nommensen
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Other

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The Early Warning System in Preventing Human Trafficking: Border (In) Security and Challenges for Indonesia Azizurrahman, Sy. Hasyim; Ismawati, Sri; Siagian, Parulian; Had, Abunawas; Tahir, Muhammad; Alkadri, Sy. Muhammad Ridho Rizki Maulufi
Hasanuddin Law Review VOLUME 9 ISSUE 3, DECEMBER 2023
Publisher : Faculty of Law, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/halrev.v9i3.4692

Abstract

This article aims to find out how the early warning system is constructed in detecting human trafficking. This research discusses human trafficking in Indonesia, where most of the victims were trafficked to neighboring countries in the border area. One of the unsolved problem exist today is human trafficking in frontier areas; hence, there are three major factors causing the number of human trafficking in Indonesia is in high level according to data from the International Organization for Migration. This article is using empirical legal research method. The results show that the construction of an early warning system can be formed by studying the methods or modes used by the perpetrators in committing the crime of human trafficking. However, for this concept to succeed, good synchronization is needed between filters that include potential victims, agencies or institutions that can represent administrative functions, and officers at border area guard posts.
KAJIAN TERHADAP KARAKTERISTIK PERPINDAHAN PANAS PADA LOOP THERMOSYPHON SEBAGAI ALAT RECOVERY PANAS TEMPERATUR RENDAH Siagian, Parulian; Siahaan, Saloom Hilton; Siagian, Lestina
Jurnal Visi Eksakta Vol. 1 No. 1 (2020): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1248.682 KB) | DOI: 10.51622/eksakta.v1i1.48

Abstract

The purpose of this study was to examine the effectiveness of the Loop Thermosyphon Heat Exchanger (LTHE) fluidized R134a refrigerant at variations in working fluid pressure of 0.8MPa and 1.2MPa. Thermosyphon is made of three parts, namely, evaporator, condenser and adiabatic part. Evaporators are made of 3/4 inch diameter copper pipe with a length of 3.5 cm. The condenser is made of 3/4 inch diameter copper pipe with a length of 15 cm. The adiabatic part of the steam line is made of copper pipes with a diameter of 3/4 inches and a length of 25 cm and a liquid line with a diameter of 3/8 inches with a length of 27 cm. Things that were investigated included the effect of air flow velocity (heated fluid) of 0.8 m/s, 1m/s, and 1.2m/s on the effectiveness of LTHE and the effect of an increase in evaporator temperature by 400C, 500C, and 600C on the effectiveness of LTHE. The study was conducted experimentally where the LTHE evaporator was heated with a heater. The results of this study show that the effectiveness of LTHE heat transfer work pressure of 1.2 MPa pressure is about 30-68% and higher than the effectiveness of LTHE heat transfer work pressure of 0.8 MPa pressure about 22-35%. Effectiveness decreases with increasing airflow velocity. The LTHE thermal resistance of 0.8 MPa pressure is around 0.3-0.450C/ W and is greater than the LTHE thermal resistance of 1.2 MPa pressure around 0.08-0.40C /W.
The Early Warning System in Preventing Human Trafficking: Border (In) Security and Challenges for Indonesia Azizurrahman, Sy. Hasyim; Ismawati, Sri; Siagian, Parulian; Had, Abunawas; Tahir, Muhammad; Alkadri, Sy. Muhammad Ridho Rizki Maulufi
Hasanuddin Law Review VOLUME 9 ISSUE 3, DECEMBER 2023
Publisher : Faculty of Law, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/halrev.v9i3.4692

Abstract

This article aims to find out how the early warning system is constructed in detecting human trafficking. This research discusses human trafficking in Indonesia, where most of the victims were trafficked to neighboring countries in the border area. One of the unsolved problem exist today is human trafficking in frontier areas; hence, there are three major factors causing the number of human trafficking in Indonesia is in high level according to data from the International Organization for Migration. This article is using empirical legal research method. The results show that the construction of an early warning system can be formed by studying the methods or modes used by the perpetrators in committing the crime of human trafficking. However, for this concept to succeed, good synchronization is needed between filters that include potential victims, agencies or institutions that can represent administrative functions, and officers at border area guard posts.
Pendampingan Tata Kelola Open Journal System (OJS) Menuju Akreditasi Jurnal Nasional di Fakultas Ilmu Pendidikan dan Keguruan (FKIP) Universitas HKBP Nommensen Medan Rikki, Alex; Pakpahan, Sorang; Harianja, Andy Paul; Siahaan, Azarya N J; Purba, Doni El Rezen; Siagian, Parulian; Batubara, Muhammad Iqbal
ULEAD : Jurnal E-Pengabdian Volume 4 Nomor 1 Juli 2024
Publisher : Fakultas Ilmu Komputer, Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/ulead.v4i1.3998

Abstract

Pendampingan dilaksanakan dalam bentuk workshop selama satu hari dengan mengikutsertakan dosen dan staf administrasi dari berbagai prodi lembaga penelitian. Materi yang disampaikan meliputi pengenalan tentang OJS, langkah-langkah dalam mengelola OJS, praktik langsung dalam menggunakan OJS, serta strategi untuk meningkatkan visibilitas dan aksesibilitas jurnal yang diterbitkan melalui OJS. Pelatihan manajemen pengelolaan dan pendampingan penggunaan OJS telah memberikan kontribusi yang positif dalam meningkatkan pemahaman dan keterampilan teknis peserta dalam mengelola jurnal ilmiah secara daring. Dengan demikian, disarankan untuk melanjutkan pelaksanaan pelatihan semacam ini dengan melibatkan lebih banyak peserta dari berbagai disiplin ilmu dan institusi pendidikan.
UJI EKSPERIMEN KINERJA PANEL SURYA JENIS MONOCRYSTALLINE 100 Wp DENGAN SUDUT 30o DENGAN MENGGUNAKAN KACA REFLEKTOR Kusuma, Budhi Santri; Siagian, Parulian; Pakpahan, William Robert P; Panjaitan, Joel; Siagian, Lestina R
ATDS Saintech Journal of Engineering Vol. 5 No. 1 (2024): Edisi Juni
Publisher : Akademi Teknik Deli Serdang

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

Abstract

Penelitian ini dilatar belakangi oleh ketergantungan masyarakat akan energi listrik yang semakin besar seiring dengan kemajuan dibidang teknologi serta penambahan penduduk. Sementara itu energi fosil yang selama ini banyak digunakan diseluruh dunia termasuk Indonesia ketersediaan nya semakin menipis, sehingga perlu adanya energi alternatif yang dapat menggantikan energi fosil sebegai pengganti energi listrik utama. Salah satu nya adalah dengan memanfaatkan energi matahari yang memiliki jumlah melimpah serta ramah linkungan. Energi matahari dapat dimanfaatkan dengan merubahnya menjadi energi listrik menggunakan panel surya. Untuk dapat mengoptimalkan penyerapan sinar matahari perlu adanya suatu sistem yang dapat mengatur agar panel surya selalu berada pada posisi tegak lurus dengan arah datang nya sinar matahari, yaitu solar tracker statis. Pengambilan data hasil pengujian atau penelitian dilakukan secara langsung dengan menggunakan software GUI dan Data logger serta menggunakan alat berupa Anemometer, adapun data yang diteliti antara lain, intensitas cahaya matahari, tegangan, kuat arus, daya masuk, daya keluaran, kecepatan angin, temperatur dan efisiensi. Hasil penelitian menunjukkan bahwa panel surya 100 Wp tidak dapat menghasilkan output daya normal (Efisiensi diatas 10%) jika intensitas cahaya matahari yang diterima dibawah 200 W/m2
Pengembangan Panel Surya 120 Wp Dengan Solar Tracker Double Axis Sebagai Bahan Pembelajaran Mahasiswa di Program Studi Teknik Mesin UHN Siagian, Parulian
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 2 (2022): Edisi Februari 2022
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1417.407 KB) | DOI: 10.36655/sprocket.v3i2.658

Abstract

The current need for electrical energy sourced from fuel oil is increasingly running out and expensive. Anticipating future energy crises will require creativity from energy observers in finding alternative energy sources that can improve people's welfare. We get solar energy for free throughout the year with good intensity, one of which is because Indonesia's position is on the equator. To convert solar heat from the outside into electrical energy, several converter technologies such as solar panels are needed. Solar panels that are directly exposed to solar radiation can produce efficient electrical energy depending on the position of the incident light that hits the surface of the solar panel. Solar panels that can follow the direction of the radiation source at an angle of 90o to the surface of the solar panel must require a solar tracker. Solar tracker is a control circuit that is able to detect and follow the direction of the sun so that the solar panel is always perpendicular to the sun so that the light intensity received by the panel is optimal by adjusting the motor movement. The results of this study indicate a light intensity of 408.10 W/m2 at a wind speed of 1.08 m/s produces a current of 19.20 Volts with an efficiency level of 4.21% at the incoming energy (Pin) 279.05 and the outgoing energy ( Pout) 11.77 W.
Pengujian Kekuatan Tarik Komposit Serat Kayu Mahoni Tanpa Pengaruh Alkali Yanhar, M Rafiq; Siagian, Parulian
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.912

Abstract

Composite is defined as a combination of two types of materials, namely matrix and reinforcement which have different properties. Composites have the advantage that they are resistant to corrosion and also have good strength and stiffness. This study aims to determine the tensile strength of mahogany fiber composites without alkali, with variations in fiber volume of 10%, 30%, 50%, and variations of mesh 30, 50, and 80. The reinforcing particles are made in powder form by means of a blender with a matrix. BQTN 157 EX polyester resin was used. The results showed that the highest tensile strength was found in the mesh 80 experiment of 43.07 MPa. This shows that the smaller the composite reinforcing particles, the greater the tensile strength. While the smallest tensile strength is at 10% fiber volume, namely 14.21 MPa. Tensile strength reaches its maximum at 30% fiber volume, which is 32.76 MPa. The addition of fiber volume to 50% actually lowers the tensile strength to 20.69 MPa.
Analisa Kebutuhan Energi Termal Pada Kotak Pengering Biji Kopi Arabica yang di Isolasi dengan Aluminium Foil Siagian, Parulian; Napitupulu, Richard A. M.; Tampubolon, Miduk; Siagian, Lestina
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.946

Abstract

The experiment test was carried out to obtain the composition of the caloric quality needed to determine the water content and the mass amount of coffee beans when they were dried by utilizing the sun's heat. Heat transfer processes by convection, conduction and radiation play an important role in the drying process with heat quality. Ambient temperature data of 350C with a constant fan rotation speed of 1.0m/s. The duration of the test is 5 days where the initial sample weight is 5000gr with the final result being a water content of 12-15%, with a duration of testing per day for 10 hours starting at 08.00-18.00Wib. The final drying weight of coffee beans for 5 days is: 2500.21gr with an initial weight of 5000kg. The temperature difference around the box is 31,110C. heat weight to evaporate water content Qh= 65.6058.kJ. and the heat required in heating the Coffee beans is 72,839 kJ. The ability to dry 5000gr of coffee beans requires total heat: 138.43kJ with a drying box volume of 8.88m3.
Simulasi CFD Distribusi Temperatur pada Pengering Biji Kopi dengan Sistem Konveksi Paksa Pasaribu, Humisar; Lumbangaol, Partahi; Napitupulu, Richard A.M; Siagian, Parulian; Siagian, Horas S; Setyawan, Eko Yohanes
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 5 No 1 (2023): Edisi Agustus 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v5i1.1214

Abstract

Drying is a mass transfer and heat transfer process that is strongly influenced by temperature and air velocity. The importance of analyzing the temperature distribution and air velocity is expected to be used as a reference to optimize the drying process to be faster and better. This study aims to analyze the temperature distribution and air velocity that occurs in a coffee bean dryer with a forced convection system using CFD simulation. CFD simulations are carried out using ANSYS Fluent software. with steady conditions, and using a pressure-based solver method. The obtained temperature distribution occurs with an estimated absorber temperature difference with the drying chamber is 31% during the day.
Analisa Pengaruh Pendingin Terhadap Struktur Mikro Dan Sifat Mekanik Pada Baja ST 60 Siagian, Parulian; Nababan, Wilson Sabastian; Manurung, Charles S.P; Lumbangaol, Partahi; Siagian, Lestina; Manurung, Wany Chytra
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 5 No 2 (2024): Edisi Februari 2024
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v5i2.1406

Abstract

The field of industry that produces human needs is growing rapidly. Encouraging increased productivity with iron metal-based machine components. Using quality materials, and certified. This research uses ST 60 steel with a carbon content of 0.48%.. The research process that will be carried out is Heat treatment is needed to minimize failure, change the structure, and form the desired properties, the rapid cooling process to produce a comparison of hardness in material variations, hardness testing to determine the hardness of a material, and observation of microstructure to observe the type of microstructure formed after heat treatment and without heat treatment. After testing, the heat treatment process greatly affects changes in the mechanical properties of the material, as evidenced by the increase in hardness values which initially before the heat treatment process amounted to 194.6 Kgrf / to 255.53 Kgrf / with SAE 40 lubricant cooling media, 220.43 Kgrf / with 50% lubricant cooling media with 50% water mixture, and 300, 7 Kgrf/ with long life coolant media and it is proven that in each material given heat treatment the hardness value has increased as well, before heat treatment the hardness value in ST 60 steel is only 194.6 Kgrf/, experiencing an increase in mechanical properties, namely work with SAE 40 lubricant cooling media with a value of 255.53 Kgrf/, 50% lubricant cooling media with 50% water mixture worth 220.43 Kgrf/ and long life coolant of 300.7 Kgrf/.
Co-Authors Abunawas Abunawas, Abunawas Akadol, Nina Septiana Jasri Alberto Hutauruk Alex Rikki Alkadri, Sy. Muhammad Ridho Rizki Maulufi Andrean V. H. Simanjuntak Andreas V. H. Simanjuntak ASWANDI Aswandi , Aswandi Aswandi Aswandi, Aswandi Azizurrahman , Sy Hasyim Azizzurrahman, Sy. Hasyim Baehaqi Batubara, Muhammad Iqbal Brayen, Theo Budhi S. Kusuma Budhi Santri Kusuma Charles S.P Manurung Charles S.P. Manurung Diocto, Pniel Destenesse Eko Y Setyawan Eko Yohanes Setyawan Fadhilah, Muhamad Khoiron Gayatri, Nungky Dwi Had, Abunawas Harianja, Andy Paul Hayuningtyas, Defria Puspita Sari Herlina Herlina Herlina Hermansyah Hermansyah , Hermansyah Hermansyah Hermansyah Himsar Ambarita Hotman Manurung Ilmi , Ilmi Joel Panjaitan Lestina Siagian Libianko Sianturi Lumbangaol, Partahi Manurung, Charles S.P Manurung, Wany Chytra Marhiras Sitanggang Mega Fitri Hertini Miduk Tampubolon Muhammad Fakhri Amadika Muhammad Tahir Mukti, Plasma Versiana Nababan, Wilson Sabastian Pakpahan, William Robert P Pasaribu, Humisar Perangin-angin, Siwan E. Purba, Doni El Rezen Raden Mohamad Herdian Bhakti Richard A M Napitupulu Ricky Therisno Rokki Manurung Safaruddin Harefa Septiani Silitonga Septiani Silitonga Setyawan, Eko Yohanes Siagian, Horas S Siagian, Lestina Siagian, Lestina R Siahaan, Azarya N J Siahaan, Saloom Hilton Sianturi, Roy Lamrun Sibuk Ginting Sihombing, Roland siwan edi amanta Perangin angin Soa, Alfonsus Hendri Sorang Pakpahan Sri Ismawati Sy. Hasyim Azizurrahman Syarif Hasyim Azizurrahman Tampubolon, Miduk Tulus Burhanuddin Sitorus Tumiur Gultom Waldemar Naibaho Wandro Siregar Widuri, Sifa Intania Yanhar, M Rafiq Yohanes Hutahaean Yong Song Chen