Article Per Year (5 Year)
p-Index From 2021 - 2026
3.057
P-Index
This Author published in this journals
All Journal JPSE (Journal of Physical Science and Engineering) Metal Indonesia Jurnal TAMBORA Wahana Peternakan Jurnal Manajemen dan Budaya Jurnal Pijar MIPA Hexagon Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi Jurnal Pengabdian Rekayasa Sistem PERSEPTIF: Jurnal Ilmu Sosial dan Humaniora
Bahtiar, Syamsul
Department Of Metallurgical Engineering, Universitas Teknologi Sumbawa
Religion Agriculture, Biological Sciences & Forestry Arts 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Veterinary Other

Published : 17 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 17 Documents
Search

 1   2 
Synthesis of Cellulose from Decorticated Sisal Plants (Agave sisalana) using the Acid Hydrolysis Method Widyawati, Fauzi; Hidayat, Syamsul; Wiradana, Aditya; Setyaningtyas, Ayunda Kinasih; Bahtiar, Syamsul; Yanuar, Emsal
Jurnal Pijar Mipa Vol. 20 No. 3 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i3.8099

Abstract

Sisal Plant Production Process (Agave sisalana) produces waste of around 95%, which is wasted and can be an environmental problem because it is not processed properly. Sisal decortication waste contains active biochemical compounds, one of which is cellulose, which has the potential to be used in various fields. Cellulose is one of the most widely distributed and abundant biopolymers on Earth, as the main source of renewable materials obtained from plant fibers. Initial Treatment of Fiber Alkalization using 5% NaOH solution (1:20) for 2 hours at a temperature of 80 °C at a speed of 200 rpm. Then the bleaching process(bleaching). Samples of the results of alkalization treatment using hydrogen peroxide solution (H2THE23%) at a temperature of 80 °C for 3 hours, repeated once. In the Acid Hydrolysis process, the resulting sample is bleached with acid using sulfuric acid (H2SO465%) at a temperature of 80 °C for 1 hour (1:20). Sample Characterization Fiber characterization using the NDF test to determine cellulose content. The results of the cellulose content test in sisal fiber decortication waste were 1.545 mg/L Based on the results of the study, nanocellulose with a high % crystallinity was successfully extracted from sisal fiber decortication waste using a chemical treatment method. The FTIR spectrum shows a broad band at 3358-3410 cm-1which is the vibration of the OH group of cellulose. The removal of lignin levels was successfully carried out, showing that the peak of the spectrum band produced was only 1279.26 cm-1. The average size of nanocellulose particles is around 10-30 nm and consists of 30-100 cellulose molecules.
PEMBUATAN JARINGAN KOMPUTER BERBASIS MIKROTIK: Yuliadi, Rodianto, M. Julkarnain, Eri Sasmita Susanto, Nawasyarif, Syamsul Bahtiar, Fadli Dzil Ikram YULIADI, YULIADI; Rodianto, Rodianto; Julkarnain, M.; Susanto, Eri Sasmita; Nawassyarif, Nawassyarif; Bahtiar, Syamsul; Ikram, Fadhli Dzil
Jurnal Pengabdian Rekayasa Sistem Vol 1 No 1 (2023): Edisi 1
Publisher : Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jpres.v1i1.2286

Abstract

Computer network is one means of supporting the activities of a government or private agency. SMAN 3 Praya Central Lombok is a public senior high school located in the Praya district. Community Service Activities (PkM) are one of the tri dharma activities of higher education with the aim of implementing lecturer knowledge and providing students with learning experiences and collaborating in community development activities as a means of implementing and developing science and technology in communities outside the campus. In the PkM which is carried out with the development of a microtic-based Local Area Network (LAN) computer network. Network installation by installing at several predetermined points, namely the Principal's Room, Teacher's Room, Administration Room, Library Room and Computer Laboratory. In a proxy-based computer network used as bandwidth sharing or bandwidth management using a proxy router on each host/user is an important part to do for internet service providers. Bandwidth is the most important part of a network, therefore the amount of bandwidth or bandwidth management is taken into account in order to create fast and flexible access so as to maximize internet connections according to the needs in each section. There is a need for bandwidth management to divide the amount of bandwidth needed.
ANALISIS POTENSI KEBANGKRUTAN PADA PERUSAHAAN LEASING DI BURSA EFEK INDONESIA DENGAN MENGGUNAKAN METODE ALTMAN Z-SCORE MODIFIKASI (Studi Kasus Pada Perusahan PT BFI Finance Indonesia Tbk) Putrajab; Heriwibowo, Dedy; Bahtiar, Syamsul
Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi Vol. 2 No. 1 (2024): Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi
Publisher : Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.572349/neraca.v2i1.735

Abstract

Penelitian ini membahas tentang analisa potensi kebangkrutan PT BFI Finance Indonesia Tbk tahun 2019-2022 dengan metode Altman Z-Score modifikasi serta variabel-variabel yang mempengaruhinya. Tujuan penelitian ini terdiri atas; 1. Mengetahui dan memahami kondisi tingkat kebangkrutan pada perusahaan PT BFI Finance Indonesia Tbk Periode 2019-2022 dengan menggunakan metode Altman Z-Score modifikasi. 2. Mengetahui dan menganalisa hubungan variabel Z-Score (Net Working Capital To Total Assets, Retained Earning To Total Assets, Earning Before Interest and Tax To Total Assets, dan Total Equity to Total Debt Ratio) terhadap tingkat kebangkrutan PT BFI Finance Indonesia Tbk. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian deskriptif campuran. Hasil penelitian menunjukkan bahwa PT. BFI Finance Indonesia Tbk selama 4 (empat) tahun periode penelitian berada dalam kategori kebangkrutan “ZONA AMAN” karena memiliki Z-Score di atas 2,60 (Z>2.60). Dengan hasil Z-Score masing-masing yaitu pada tahun 2019, PT. BFI Finance Indonesia Tbk memiliki nilai Z-Score sebesar 3.76, kemudian tahun 2020 memiliki nilai Z-Score yaitu 5.13, tahun 2021 memiliki nilai Z-Score 5.90, dan tahun 2022 memiliki nilai Z-Score adalah 4.88. Variable Net Working Capital To Total Assets (x1), Retained Earning To Total Assets (x2),, Earning Before Interest and Tax To Total Assets(x3), dan Total Equity to Total Debt Ratio (x4), memiliki pengaruh positif dalam mencegah kebangkrutan PT. BFI Finance Indonesia Tbk. Sehingga dapat disimpulkan bahwa perusahaan PT BFI Finance Indonesia Tbk tahun 2019-2022 tidak mengalami kebangkrutan dan variabel x1, x2, x3, dan x4 memiliki pengaruh positif dalam mencegah kebangkrutan perusahaan.
Preparation of synthesis nanoparticles Fe3O4 based on iron sand Sumbawa Bahtiar, Syamsul; Widyawati, Fauzi; Yanuar, Emsal; Ramadhan, Risky; Zahra, Karen; Hidayat, Syamsul
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i6.5644

Abstract

Iron sand generally contains minerals such as ilmenite, magnetite, and hematite. Based on the results of previous tests, the main composition of iron sand in Rhee, Sumbawa regency, is magnetite. One method to increase the Fe content in iron sand is by pre-treatment with NaOH. NaOH is also used to precipitate heavy metals in a mineral. In this study, three variations were carried out with the ratio of NaOH: iron sand, namely: 1: 4, 2: 4, and 3: 4 at a temperature of 300 C. Furthermore, the calcination results were followed by the synthesis of Fe3O4 nanoparticles using the coprecipitation method. The results of the XRF characterization showed an increase in Fe levels after being processed by the alkalization treatment. The highest concentration was obtained in 1:4, with a Fe percentage of 91.1%. The results of the XRD characterization showed that the synthesis of Fe3O4 was successfully carried out with single phase Fe3O4 amlording to the data reference 96-9005839 forms and the space group F d -3 m. Crystal size analysis Using the Debey-Scherrer equation, the respective sizes were 12.7 nm, 8.71 nm, and 9.76 nm, respectively.
Analisis Pengaruh Temperatur dan Rasio Terhadap Persen Ekstraksi Pada Proses Pelindian Nikel Kadar Rendah Pomalaa Sulawesi Tenggara: Ekstraksi Bijih Nikel Laterit anggun syafitri; Emsal Yanuar; Syamsul Bahtiar
Hexagon Vol 5 No 1 (2024): HEXAGON - Edisi 9
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/hexagon.v5i1.3213

Abstract

Saat ini nikel telah banyak digunakan di berbagai perindustrian karena nikel memiliki banyak manfaat salah satunya adalah pada indutri logam, baterai, dan lainnya,Seiring dengan banyaknya aplikasi dan manfaat dari nikel maka perlu untuk dilakukan pemisahan nikel dari sumbernya. Pada penelitian ini bertujuan untuk mempelajari dan menganalisis pengaruh temperatur dan rasio terhadap perolehan bijih nikel laterit di Pomalaa, Sulawesi Tenggara pada proses pelindian logam nikel menggunakan asam sulfat. Berdasarkan hasil analisa XRF, sampel batuan memiliki kadar nikel yang tinggi yakni sekitar 5,67%. Hasil ini similar dengan hasil pengujian nikel total dalam batuan menggunakan aqua regia sebagai pelarut yakni didapatkan sekitar 6,5429%. Pada kondisi reaksi pelindian batuan nikel rasio padat cair 1:20, suhu 90oC didapat persentase ekstraksi nikel tertinggi yakni sekitar 66,76%. Sedangkan persentase ekstraksi nikel yang rendah didapatkan pada suhu kamar rasio padat cair 1:10 yakni sekitar 8,65%. Berdasarkan hasil tersebut, temperatur dan rasio padat cair pada proses pelindian memiliki pengaruh yang signifikan terhadap persentase ekstraksi nikel.
PELATIHAN DASAR MICROSOFT EXCEL UNTUK MENDUKUNG TATA KELOLA DATA DI SDN PUKAT UTAN Idifitriani, Farida; W, Yunanri.; Nuryadi, Halid; Idrus, Yuliadi; Mulyanto, Yudi; Hamdani, Fahri; Susanto, Eri Sasmita; Syamsul Bahtiar; Rodianto; Dinola
Jurnal Pengabdian Rekayasa Sistem Vol 4 No 1 (2026): Edisi 7
Publisher : Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jpres.v4i1.7142

Abstract

Perkembangan teknologi informasi menuntut sekolah untuk mampu mengelola data secara efektif, akurat, dan sistematis guna mendukung tata kelola administrasi yang baik. Namun, pada kenyataannya masih terdapat keterbatasan kompetensi tenaga pendidik dan tenaga kependidikan dalam memanfaatkan aplikasi pengolah data, khususnya Microsoft Excel. Kegiatan pengabdian ini bertujuan untuk meningkatkan pengetahuan dan keterampilan dasar penggunaan Microsoft Excel dalam mendukung tata kelola data di SDN Pukat Utan. Metode pelaksanaan pelatihan meliputi pemberian materi secara teoritis, demonstrasi penggunaan fitur-fitur dasar Microsoft Excel, serta praktik langsung yang disesuaikan dengan kebutuhan administrasi sekolah. Materi yang diberikan mencakup pengenalan antarmuka Excel, pengelolaan data sederhana, penggunaan rumus dasar, serta pembuatan tabel dan grafik untuk penyajian data. Hasil pelatihan menunjukkan adanya peningkatan pemahaman dan kemampuan peserta dalam mengelola data sekolah secara lebih rapi, efisien, dan akurat. Pelatihan ini diharapkan dapat menjadi langkah awal dalam meningkatkan kualitas tata kelola data sekolah serta mendukung optimalisasi kinerja administrasi dan menunjang kegiatan pengelolaan pembelajaran bagi guru di SDN Pukat Utan.
Konstruksi Realitas Sosial melalui Algoritma Media Digital dalam Perspektif Ilmu Sosial Modern Indonesia Fathilah, Sultan Akrabu; Fitrayani, Ana; Bahtiar, Syamsul
PERSEPTIF: Jurnal Ilmu Sosial dan Humaniora Vol. 3 No. 4 (2025): PERSEPTIF: Jurnal Ilmu Sosial dan Humaniora
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/perseptif.v3i4.453

Abstract

This study examines the construction of social reality through digital media algorithms from the perspective of modern Indonesian social sciences. The primary focus lies on algorithms as non-neutral mechanisms that actively shape information flows, interaction patterns, and the production of social meaning in the digital public sphere. Algorithms operate through processes of selection, personalization, and content prioritization, which directly influence how individuals perceive social reality, form opinions, and construct identities and social affiliations. The study is grounded in social construction of reality theory, contextualized within the development of digital media and algorithmic logic. The research adopts a qualitative approach with a critical analytical design to examine algorithmic practices in Indonesian digital media. Data were collected through document analysis, digital media discourse analysis, and a systematic review of relevant empirical studies. The analysis employed a thematic strategy to identify relational patterns between algorithms, discursive production, and user responses. The findings demonstrate that digital media algorithms function as structural actors that reinforce filter bubbles, echo chambers, and the commodification of social discourse. In the Indonesian context, algorithmic constructions of social reality intersect with cultural, religious, and political dynamics, producing curated forms of reality that carry a high potential for social polarization. This study underscores the urgency of algorithmic literacy, platform transparency, and public policy interventions to safeguard the quality of the digital public sphere. Academically, the research contributes to the advancement of interdisciplinary approaches within social sciences and humanities in the digital era.
Co-Authors Ahmad Reza Jatnika Aldrin Ali Topan, Paris anggun syafitri Dery Sofya, Noura Dian Anggreini Dian Anggreini Dianto, Dianto Dinola Dzil Ikram, Fadhli Eka Ardiansyah, Eka Ekastini Ekastini Eri Sasmita Susanto Fadhli Dzil Ikram Fahri Hamdani Fathilah, Sultan Akrabu Fauzi Widyawati Fitrayani, Ana Heriwibowo, Dedy Hermanto, Koko Ida Ayu Putu Sri Widnyani Idifitriani, Farida Idrus, Yuliadi Ikram, Fadhli Dzil Imam Munandar izzul islam Jayatri, Adella Ulyandana Julkarnain, M. Kiki Firanita Mietra Anggara Mukhtar Hadi Mulyanto, Yudi Nawassyarif Nayeng Githa Aiyodya , Ayunda Nuryadi, Halid Putrajab Rahmat Bukahri, La Ode Ramadhan, Risky Rita Desiasni Robbani, Farisan Rodianto, Rodianto Setyaningtyas, Ayunda Kinasih Sri Yulianti Sudirman Supianto Cibro Syamsul Hidayat Syamsul Hidayat SYAMSUL HIDAYAT W, Yunanri Wafdan Muzakki Wiradana, Aditya Yanuar, Emsal Yuliadi Yuliadi Yuliadi Yuliadi Yunus, Farhan Zahra, Karen