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All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika Jurnal Sains Dasar Jurnal Sains dan Teknologi Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Teknik Elektro Sinergi Jurnal Pendidikan Fisika FKIP UM Metro Journal of Mathematical and Fundamental Sciences JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Science and Technology Jurnal Geosaintek JOURNAL ONLINE OF PHYSICS Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika JURNAL NASIONAL TEKNIK ELEKTRO Jurnal Fisika FLUX Edumatsains KLIK (Kumpulan jurnaL Ilmu Komputer) (e-Journal) Journal of Physics: Theories and Applications Jurnal Matematika Sains dan Teknologi Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Sains Natural: Journal of Biology and Chemistry KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Kumawula: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering and Scientific Research (JESR) Journal of Appropriate Technology for Community Services Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesian Review of Physics (IRiP) Stannum : Jurnal Sains dan Terapan Kimia Bioscientist : Jurnal Ilmiah Biologi Journal of Innovation and Technology Abimanyu: Journal of Community Engagement Jurnal Riset Fisika Indonesia Dharma Pengabdian Perguruan Tinggi (DEPATI) Science Technology and Management Journal (STMJ) Jurnal Geosaintek
Yuant Tiandho
Universitas Bangka Belitung
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 Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Studi Kinetika Pada Proses Elektrokoagulasi Zat Warna Metilen Biru Andrian Saputra; Yuant Tiandho; Fitri Afriani
Jurnal Riset Fisika Indonesia Vol 3 No 1 (2022): Desember 2022
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i1.3230

Abstract

Permasalahan utama yang umumnya dihadapi para pelaku industri tekstil yaitu berkaitan dengan banyaknya jumlah limbah cair yang dihasilkan. Limbah cair pewarna metilen biru tidak dapat dibuang secara langsung ke perairan karena memiliki tingkat kelarutan yang tinggi dan bersifat non-biodegradable. Oleh karena itu, dalam penelitian ini dilakukan pengolahan limbah cair pewarna metilen biru dengan menggunakan metode elektrokoagulasi yang mudah diterapkan dengan tingkat efisiensi pemisahan kadar polutan dalam air limbah yang tinggi. Tahapan selanjutnya dilakukan dekolorisasi pada limbah pewarna metilen biru dengan variasi tegangan yang diberikan sebesar 20,25, dan 30 volt serta variasi waktu yang digunakan selama 1,3,5,10,15,20,25, dan 30 menit. Berdasarkan hasil penelitian menunjukkan bahwa semakin besar tegangan listrik dan semakin lama proses elektrokoagulasi dilakukan maka semakin tinggi pula nilai dekolorisasi yang dihasilkan limbah pewarna metilen biru tersebut. Hasil dekoloriasasi yang diperoleh kemudian dilanjutkan dengan melakukan analisis laju reaksi yang menunjukkan perubahan konsentrasi metilen biru yang berbanding lurus dengan waktu yang diberikan. Analisis laju reaksi dilakukan dengan menggunakan model kinetika reaksi yaitu orde satu, orde dua, dan BMG. Berdasarkan nilai yang dihasilkan dari ketiga model kinetika reaksi, model kinetika BMG merupakan model kinetika reaksi yang terbaik dikarenakan memiliki nilai koefisien determinasi (R2) yang tinggi yaitu sebesar 0,999.
Dirac Particles Emission from An Elliptical Black Hole Yuant Tiandho
Indonesian Journal of Science and Technology Vol 2, No 1 (2017): IJoST: VOLUME 2, ISSUE 1, April 2017
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v2i1.5988

Abstract

According to the general theory of relativiy, a black hole is defined as a region of spacetime with super-strong gravitational effects and there is nothing can escape from it. So in the classical theory of relativity, it is safe to say that black hole is a "dead" thermodynamical object. However, by using quantum mechanics theory, Hawking has shown that a black hole may emit particles. In this paper, calculation of temperature of an elliptical black hole when emitting the Dirac particles was presented. By using the complexpath method, radiation can be described as emission process in the tunneling pictures. According to relationship between probability of outgoing particle with the spectrum of black body radiation for fermion particles, temperature of the elliptical black hole can be obtained and it depend on the azimuthal angle. This result also showed that condition on the surface of elliptical black hole is not in thermal equilibrium.
Edukasi Masyarakat Mengenai Adaptasi Kebiasaan Baru Guna Mencegah Penyebaran Virus COVID-19 Di Desa Penyak Fitri Afriani; Yuant Tiandho
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 1 No 1 (2021): Mei 2021
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.563 KB) | DOI: 10.33019/depati.v1i1.2285

Abstract

The COVID-19 pandemic that has spread to all countries has changed various human activities in the world. The new habitual adaptation policy is a policy taken by the Government of the Republic of Indonesia to prevent the spread of COVID-19 while still paying attention to the economic sector. Penyak Village is located in Koba District, Central Bangka Regency. As a village located adjacent to the sea, many residents in this village work as fishermen. Therefore, the new habit adaptation policy was welcomed by the community. To increase public understanding, the community service team provides education regarding the adaptation of new habits. The educational program is carried out through direct socialization and media such as posters and pocketbooks. Also, the educational program was followed by several activities such as spraying disinfectants, making handwashing facilities, blood donation, providing necessities to the community, and submitting educational media at the Penyak Village. Based on the evaluation using a questionnaire, more than 50% of the public stated that the educational media provided was of excellent quality and was influential in increasing understanding regarding the adaptation of new habits
The Effect of Annual Apparent Motion of the Sun on the Early Oscillation of Shubuh Prayer Time (Case Study of Pontianak City) Asep Saefullah; Diana Ayu Rostikawati; Yuant Tiandho
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15899

Abstract

This Study aims to determine the effect of the Sun's annual apparent motion on the oscillations of the Subuh prayer time, especially in the city of Pontianak. The research method used is the literature review or reference method. In the literature review, the things that were done included: looking for the schedule of the dawn prayer in the city of Pontianak over one year, knowing the geographical position of the city of Pontianak, the apparent annual motion of the Sun, and the effect of the annual apparent motion of the Sun on the initial oscillation of the Subuh prayer time. Apart from that, another thing done in the literature review was to look for the influence of the earth-sun distance on the oscillations of the dawn prayer time. The results showed that there were similarities between the oscillations of the annual apparent motion of the Sun and the oscillations of the dawn prayer time in the city of Pontianak. However, there is a time difference with an average of 41 days between the oscillation of the Sun's annual apparent motion and the oscillation of the time of the Subuh prayer. The results of the Study also show that the distance from the Earth to the Sun (aphelion and perihelion) affects the initial oscillation of the dawn prayer time. When the Earth is at the aphelion point, the time for the Subuh prayer falls later than usual. Meanwhile, when the Earth is at perihelion, the time for the dawn prayer falls faster than usual.
SUSEPTIBILITAS MAGNETIK SISTEM PANASBUMI NON VULKANIK DESA TERAK MENGGUNAKAN METODE GEOMAGNETIK Tri Kusmita; Yuant Tiandho; Yekti Widyaningrum; Umi Alawiyah
Jurnal Geosaintek Vol 9, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v9i3.15563

Abstract

Geothermal in Bangka Belitung islands are classified as radiogenic type of non-volcanic geothermal. Geothermal in this area was formed due to granite rocks that have been fractured, folded or faulted. Geothemal Terak has a surface temperature of 550C - 61.80C with a water discharge of 0.2 liters/second. This research aims to identify the forming rocks of geothermal system at Terak village based on magnetic field anomalies. Data acquisition was measured using a Proton Precession Magnetometer (PPM) along 2.5 km with 100 m spacing and 500 m spacing between lines. Data processing was analyzed using diurnal correction, IGRF correction, RTE (Reduce to the Equator) correction, anomaly separation using Upward Continuation. Modeling performed by applying 2D Inverse Modeling. The results indicated that the reservoir rock in Terak area with non-volcanic geothermal system was granite with susceptibility 42 x 103 - 49 x 103. The depth of the reservoir rock was partially at a depth of 30 - 125 meters above sea level and some were exposed on the surface (0 - 80 meters above sea level). Reservoir rocks are scattered in the northwest area of the study.
GREEN SYTHESIS OF CUO USING Citrus x microcarpa BUNGE PEEL EXTRACT AND ANTIBACTERIAL ACTIVITY EVALUATION Afriani, Fitri; Lingga, Rahmad; Rafsanjani, Rifqi Almusawi; Tiandho, Yuant
Science Technology and Management Journal Vol. 5 No. 1 (2025): Januari 2025
Publisher : Fakultas Sains dan Teknologi, Universitas Nasional Karangturi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53416/stmj.v5i1.327

Abstract

This article aims to synthesize CuO nanoparticles using the green synthesis method using Citrus x microcarpa Bunge peel extract, analyze their characteristics, and evaluate their antibacterial activity against the S. aureus. We investigated the role of the accelerator agent NaOH in the green synthesis of CuO nanoparticles. The presence of green synthesized CuO nanoparticles was confirmed by UV-Vis spectrophotometer and XRD. The use of NaOH in the green synthesis of nanoparticles accelerates the emergence of absorbance peaks around 400 nm, related to CuO's surface plasmon frequency. Calculation of crystallite size based on XRD diffractogram shows that NaOH can also act as a reducing agent. The smaller size of CuO nanoparticles will increase their stability when heated. In addition, green synthesized CuO nanoparticles showed high antimicrobial activity against S. aureus pathogens. These results indicate that CuO nanoparticles with antibacterial activity can be synthesized using an environmentally friendly and simple method.
PEMBERDAYAAN MASYARAKAT ADAT MAPUR GUNA MENGEMBANGKAN DESA EKOWISATA BERBASIS BUDAYA DESA GUNUNG MUDA KABUPATEN BANGKA Isabela, Jennikita; Nizar, Ahlun; Putra, Alfryan Maulana; Ningrum, Choirunnisa Dwi Ayu; Patilawati, Pariza; Sari, Prada; Wulandari, Rossariana; Naswanto, Sekar Kinanti Ramadhini; Anggia, Suci Dwi; Faradis, Syuraya; Kristina, Yulietta; Tiandho, Yuant
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 5 No 1 (2025): Mei 2025
Publisher : Fakultas Sains dan Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/depati.v5i1.2820

Abstract

Adat Mapur memiliki budaya serta ritual peringatan yang unik dan perlu dilestarikan. Peringatan nujuh jerami dan keterampilan kesenian budaya Adat Mapur telah mengalami penurunan antusiasme di kalangan pemuda. Belum tersedianya wadah pembelajaran mengenai adat budaya merupakan salah satu faktor yang ditengarai sebagai penyebab menurunnya keterampilan generasi muda. Pengabdian ini bertujuan untuk pelestarian adat budaya, pembibitan tanaman obat, pengembangan produk kerajinan yang berkelanjutan dalam upaya pengembangan ekowisata di Dusun Air Abik. Kegiatan ini terdiri dari enam tahapan program yang disambut serta dikuti dengan baik oleh masyarakat. Hasil pengabdian menunjukkan bahwa latar belakang kemunculan program ekowisata adalah dengan melihat potensi alam yang dapat dimanfaatkan sebagai wisata, ekowisata memberikan perubahan terhadap adanya peningkatan ekonomi. Tahapan pengembangan ekowisata dimulai dari identifikasi agen pemberdayaan untuk memanfaatkan potensi alam menjadi kegiatan ekowisata yang dapat memberdayakan masyarakat lokal. Hasil program pelatihan kepemudaan, pengembangan wisata, pelatihan pembuatan anyaman, pembibitan tanaman obat dan pelatihan pemasaran serta media sosial merupakan tahapan dasar untuk program pengabdian sehingga masih diperlukan keberlanjutan program untuk membangun masyarakat serta ekowisata yang unggul di Dusun Air Abik
Removing BOD, COD, and Decolorization of Batik Cual Wastewater using Fenton Mechanism Gusa, Rika Favoria; Sari, Diana Novita; Afriani, Fitri; Sunanda, Wahri; Tiandho, Yuant
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 1 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i1.8079

Abstract

During the production of batik cual, thick-colored wastewater is produced. Unfortunately, the wastewater could damage the environment if it is disposed of without specific processing. The Fenton method is an advanced oxidation process (AOPs) that can degrade organic dyes found in liquid waste. In this research, the researchers studied the Fenton mechanism's application to the batik cual wastewater treatment. The Fenton's reagent used was H2O2 with FeSO4.7H2O. Some of the experimental wastewater treatment parameters were the values of biological oxygen demand (BOD), chemical oxygen demand (COD), the degradation efficiency of difficult to decompose organic materials, and the color degradation efficiency in batik cual wastewater. The results show that the Fenton mechanism’s efficiency of removing color from batik cual wastewater is up to 97.8%, COD and BOD removal efficiencies are 76.3% and 75.2%, and the degradation efficiency of difficult to decompose organic matter is 76.8%. Also, the researchers found that the higher amounts of FeSO4.7H2O increase the removal parameters effectiveness. Therefore, the Fenton mechanism can effectively improve the quality of wastewater in batik cual production.
SUSEPTIBILITAS MAGNETIK SISTEM PANASBUMI NON VULKANIK DESA TERAK MENGGUNAKAN METODE GEOMAGNETIK Kusmita, Tri; Tiandho, Yuant
Jurnal Geosaintek Vol. 9 No. 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

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

Abstract

Geothermal in Bangka Belitung islands are classified as radiogenic type of non-volcanic geothermal. Geothermal in this area was formed due to granite rocks that have been fractured, folded or faulted. Geothemal Terak has a surface temperature of 550C - 61.80C with a water discharge of 0.2 liters/second. This research aims to identify the forming rocks of geothermal system at Terak village based on magnetic field anomalies. Data acquisition was measured using a Proton Precession Magnetometer (PPM) along 2.5 km with 100 m spacing and 500 m spacing between lines. Data processing was analyzed using diurnal correction, IGRF correction, RTE (Reduce to the Equator) correction, anomaly separation using Upward Continuation. Modeling performed by applying 2D Inverse Modeling. The results indicated that the reservoir rock in Terak area with non-volcanic geothermal system was granite with susceptibility 42 x 103 - 49 x 103. The depth of the reservoir rock was partially at a depth of 30 - 125 meters above sea level and some were exposed on the surface (0 - 80 meters above sea level). Reservoir rocks are scattered in the northwest area of the study.
MODIFIKASI DISTRIBUSI MUATAN BERDASARKAN DISTRIBUSI FERMI-DIRAC DAN APLIKASINYA PADA HUKUM GAUSS Tiandho, Yuant; Maryana, Okky; Afriani, Fitri; Saefullah, Asep; Pardede, Indra
JST (Jurnal Sains dan Teknologi) Vol. 9 No. 2 (2020)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.001 KB) | DOI: 10.23887/jstundiksha.v9i2.22851

Abstract

Hukum Gauss merupakan salah satu hukum fundamental fisika, khususnya dalam kajian listrik. Salah satu variabel penting untuk dapat menggunakan hukum Gauss adalah kemampuan menentukan muatan yang terlingkupi permukaan Gauss. Umumnya, definisi distribusi muatan suatu objek didefinisikan oleh fungsi sepenggal (piecewise continuous function). Pada makalah ini diajukan suatu model distribusi muatan yang berlaku untuk di seluruh lokasi. Model tersebut disusun berdasarkan analogi dengan fungsi distribusi Fermi-Dirac. Model yang diajukan mengandung fungsi eksponensial yang terkait dengan radius benda dan dilengkapi dengan suatu parameter untuk menghindari munculnya lekukan kurva yang bersifat tidak fisis. Distribusi muatan tersebut dapat digunakan untuk simulasi menghitung muatan yang terlingkupi oleh permukaan Gauss dan menentukan medan listriknya. Beberapa kasus yang ditinjau adalah objek bola padat serta bola konsentris. Jika dibandingkan dengan distribusi muatan konvensional, distribusi muatan termodifikasi lebih sederhana dan dapat mereduksi algoritma proses komputasi. Oleh karena itu hal ini dapat dimanfaatkan dalam pembuatan media pembelajaran berbasis komputer yang ringkas dan sederhana.
Co-Authors Ahmad Fahrul Syarif Aisyah D. A. T. Safitri Aisyah D.A.T. Safitri Aisyah Deri Ayu Tungga Safitri Aliefia Noor Aliefia Noor Aliefia Noor Aliefia Noor Andi Gustomi Andrian Saputra Anggia, Suci Dwi Anisa Indriawati Anisah Mega Andini Asep Saefullah Asep Saefullah Dea Amelia Deden Nurdandi Diana Ayu Rostikawati Diana Novita Sari Diana Novita Sari Diana Novita Sari, Diana Novita Eri Gusnia Evi J Evi J Evi J Evi J. Evi.J Evi.J Faradis, Syuraya Fenni Vavionita Fitri Afriani Hamdini, Meri Herman Aldila Indra Pardede Isabela, Jennikita J., Evi Kristina, Yulietta Lingga, Rahmad M. Yonggi Puriza Mahjur Mahjur Marlina Marlina Maryana, Okky Megiyo Megiyo Meri Hamdini Muhammad B Hariyono Muhammad David Ramadhon Mustari Mustari Mustari Mustari Mustari Mustari Mustari Mustari Mustari Mustari Naswanto, Sekar Kinanti Ramadhini Ningrum, Choirunnisa Dwi Ayu Nizar, Ahlun Noor, Aliefia Patilawati, Pariza Pratama, Erick Aryana Purwati Purwati Putra, Alfryan Maulana Rafsanjani, Rifqi Almusawi Rahmad Lingga Ramadina, Salsabila Redi Randika Rifqi A. Rafsanjani Rifqi Almusawi Rafsanjani Rifqi Almusawi Rafsanjani Rifqi Almusawi Rafsanjani Rika Favoria Gusa Robin Robin Safitri, Aisyah D. A. T. Salsabila Ramadina Sandi Sandi Sari, Prada Siswoyo Siswoyo Susanti Susanti Tri Kusmita Umi Alawiyah Umi Awaliyah Wahri Sunanda Widodo B. Kurniawan Widodo Budi Kurniawan Wulandari, Rossariana Yekti Widyaningrum Yekti Widyaningrum Zaitun