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Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics
Published by Universitas Islam Negeri Syarif Hidayatullah Jakarta
ISSN : 26210215     EISSN : 2621489X     DOI : -
Core Subject : Science, Engineering,
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics is a journal of physics that published by Departement of Physics, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta. The aim of the journal is to disseminate the researches done by researchers both from Indonesian and overseas. This journal focused on physics field including Materials Sciences, Geophysics, Instrumentation Physics, and Theoretical Physics. AL-FIZIYA is also dedicated to preserving the transmission of knowledge of science. The journal welcomes contributions from scholars around the world in the physics field, both in English and Bahasa.
Arjuna Subject : -
Articles 154 Documents
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Sintesis dan Karakterisasi Barium Heksaferit dengan Variasi Pengurangan Massa Fe2O3 Ryan Rizaldy; Sitti Ahmiatri Saptari; Wisnu Ari Adi
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics | Vol.1
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v1i2.9504

Abstract

Barium Heksaferit berhasil disintesis dengan menggunakan metode solid state reaction, dalam upaya untuk menghasilkan fase yang tunggal, kami melakukan pengurangan massa dari Fe­2O3. Dimana kami mengurangi dengan komposisi tertentu, kami menggunakan faktor pengurangan x dengan variasi x = 1, 2, 3, dan 4. Hasil dari sintesis di karakterisasi menggunakan XRD untuk melihat fase-fase apa saja yang terbentuk. Hasil data XRD kami analisis menggunakan metode penghalusan Rietveld, dan mendapakan hasil dimana berkurangnya komposisi pengotor (dalam hal ini Fe2O3) pada hasil sintesis seiring dengan pengurangnya massa bahan baku Fe2O3
Prototype of Automatic Tractor Control Navigation System Using ESP 32 Microcontroller Abu Ammar; Muhammad Yusril; Prasepvianto Estu Broto
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.6, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v6iI.31593

Abstract

A prototype of an automatic tractor control navigation system using a microcontroller has been designed. This study aims to design a prototype of a tractor control navigation system automatically. The design begins with initializing ESP 32, followed by reading GPS (Ublox Neo M8N) and compass (QMC5883L). After that, waiting for commands from the wifi network, followed by reading waypoints, moving the motor, then the motor will drive the tractor prototype. The tests carried out included GPS and compass testing, control response testing, and waypoint navigation testing. The test results show that the accuracy of the coordinates of the GPS UBlox Neo M8N is 0.04 m from the Android smartphone GPS, the QMC5883L compass test shows the difference between the analog compass and the android smartphone compass by 0.4 degrees and 1.0 degrees. Testing the navigation system using the waypoint method, it was found that it was able to map an area or location with a distance of less than 5 meters in following the waypoint route and provide accurate coordinate information to the server during the trip as a source of map information.
Identifikasi Uranium dan Thorium di Desa Takandeang Mamuju Sulawesi Barat dengan Menginterpretasikan Data Radiometri Tanah atau Batuan Mutia Khairani; Sutrisno Sutrisno; Frederikus Dian Indrastomo
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics | Vol.1
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v1i1.8993

Abstract

 Abstrak. Hasil survey dosis radiasi lingkungan menunjukkan di daerah Mamuju memiliki nilai laju dosis radiasi (radioaktivitas) yang cukup tinngi.Nilai radioaktivitas tinggi yang dijumpai pada batuan diperkirakan berasal dari keterdapatan kandungan radioaktif alami seperti unsur uranium (U) dan thorium (Th). Penelitian yang dilakukan bertujuan untuk mendapatkan kesimpulan unsur radioaktif apa yang mempengaruhi nilai laju dosis di daerah tersebut tinggi. Metode penelitian yang diterapkan adalah pengukuran radiometri, penentuan nilai ambang (threshold), menentukan populasi anomali pada unsur radioaktif dari data radiometri dengan menggunakan metode kurva probabilitas, interpolasi kriging dengan metode ordinary kriging dan analisis peta sebaran laju dosis, peta sebaran uranium, dan peta sebaran thorium. geologi daerah penelitian tersusun atas batugamping, batu lava, batuan breksi dan endapan aluvial. Berdasarkan hasil analisis diketahui bahwa nilai laju dosis tinggi mencapai 4.271,3 nSv/h di Desa Takandeang dipengaruhi oleh keterdapatan unsur thorium, dengan kadar 435,7 ppm eTh dan uranium berkadar 426 ppm eU. Abstract. Survey results of environment radiation in Mamuju show that the value of dose rate of radiation (radioactivity) is high enough. That high radioactivity value that is found in rocks is hypothesized to be generated by natural radioactive unsure such as uranium (U) and thorium (Th). The aim of this study is to get conclusion of what radioactive unsure that influences high dose rate in that region. The methods in this study are radiometry measurement, determination of treshold, determination of anomaly population on radioactive unsure from radiometry data using probability curve method, kriging interpolation with ordinary kriging method and analysis of dose rate distribution map, uranium distribution map, and thorium distribution map. The geology of studied region is composed of limestones, lava rocks, breccia rocks, and alluvial sediments. Accroding to the result of analysis, we conclude that the value of high dose rate in Takandeang Village that reaches 4.271,3 nSv/h is influenced by thorium, with level 435,7 ppm eTh and uranium with level 426 ppmeU. 
Identification of Characteristics and Distribution of Subsurface Coal Using the 2D Geoelectric Method in Tanjung Palas Timur District, North Kalimantan Putri Sekar Ayuningsih; Sutrisno Dipl.Seis; Tati Zera; Nur Hidayat S.T, M,Si
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.5, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v5i2.23106

Abstract

Based on regional geology, Tanjung Palas Timur Subdistrict is included in the only formation, which includes coal seams. The depletion of oil and gas energy sources in Indonesia results in the need for other alternative energy sources, one of which is coal. This study aims to determine the characteristics of coal in the study area. This research was conducted in Tanjung Palas Timur Subdistrict, North Kalimantan using the geoelectric resistivity method with a pole-pole configuration and 8 tracks which are divided into 2 track blocks. The resistivity geoelectric method is used because it is very suitable for mining exploration. Data processing was done in 2D using Res2dinv software and 3D using Rockworks15 software. The results of the geoelectric data processing of line 1 to 8 show that the coal seam in the study area has a resistivity of 10-30 Ωm with a thickness varying from 17.22 m - 60 m as a type of lignite coal. In addition, the research area is also dominated by layers of clay and sandstones. The continuity of the coal seam is also seen in block 1 from line 3 in the southwest direction to line 1 in the northeast direction.
Ohmic and Diamagnetic Currents Contribution on the Electromagnetic Penetration Depth of a Conducting Surface Adam Badra Cahaya
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics | Vol.4
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v4i1.19790

Abstract

Due to its conducting electron, metal is a good reflector for electromagnetic wave. An electromagnetic wave penetrating a metallic surface has a finite penetrating depth. There are two limit that are well studied in the physics textbooks. They are high frequency electromagnetic wave penetrating a metal with small conductivity and a static (low frequency) field penetrating a superconductor (metal with infinitely large conductivity). In this article we study the intermediate regime between these two limits. By setting the electric current density as the total sum of both Ohmic and Diamagnetic currents, we derive the penetration depth in the intermediate regime., we show the transition between these two limits.
Library Visitor Noise Monitoring System Design With Warning Using LED and Telegram Nur Fitriani; Sitti Ahmiatri Saptari; Elvan Yuniarti
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.6, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v6iI.34280

Abstract

Abstract. The library supports education and is used as a place to learn and gain knowledge. To maximize its use, visitors need comfort by not making noise or upheaval that can disturb other visitors. According to the decision of the Ministry of Environment in 1996, the maximum standard for noise levels in libraries is 55 dB. This research was conducted to design a tool that can monitor the noise that occurs in the library by providing information on room conditions usingLED (Light Emitting Diode) lights, LCD (Liystal Displayquid Cr), and giving notifications to librarians in the form of messages on the Telegram application if the noise exceeds the limit. maximum. The tool is designed using ESP32 as a control, a GY-MAX4466 sensor to detect sound, and the output system uses red, yellow, and greenLED (Light Emitting Diode), LCD (Liquid Crystal Display) 16x2, and the Telegram application. The results of this study concluded that the noise monitoring system was running well, with a GY-MAX4466 sensor error rate of 0.4%, and the best R Square value was obtained at a distance of 1 meter from the sound source with an R Square value of 0,7202.
Simulasi Stabilisasi Sudut Gerak Rotasi Quadrotor OS4 EPFL dengan Kendali LQG (Linear Quadratic Gaussian) Muhammad Ibrahim; Edi Kurniawan; Elvan Yuniarti
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics | Vol.1
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v1i2.9505

Abstract

Penelitian ini membahas tentang simulasi model gerak rotasi quadrotor OS4 EPFL dengan kendali LQG (Linear Quadratic Gaussian). Quadrotor disebut juga quadrotor helicopter atau quadrocopter, adalah sebuah pesawat tanpa awak (unmanned aerial vehicle / UAV) yang digerakkan oleh empat rotor yang terletak di kanan, kiri, depan dan belakang ujung kerangka silang yang simetri. Penelitian ini bertujuan untuk merancang sistem kendali LQG (Linear Quadratic Gaussian) untuk gerak rotasi quadrotor dan memastikan kinerja kendali LQG serta menganalisisnya. Metode penelitian yang digunakan dengan mensimulasikan gerak rotasi dengan menggunakan software MATLAB Simulink R2014b. Dari penelitian yang telah dilakukan, didapatkan adalah program simulasi stabilisasi sudut gerak rotasi quadrotor dengan kendali LQG berjalan dengan baik dan pemilihan matriks bobot Q =[1 1 1 1 70 70] dan R memiliki nilai 6.25 x 10-5 yang digunakan. Untuk kondisi awal sebesar pi/4 radian untuk sudut roll  radian untuk sudut pitch dan yaw pi/4 diperoleh waktu stabil sekitar 5,6,5 menit. Hal tersebut menunjukkan kondisi yang baik
Analisis Plug-in Repetitive Control untuk Rejection Multiple Periodical Disturbance dengan Metode Least Common Multiplier dan Multi Repetitive Control Nizarrachman Hadi; Edi Kurniawan; Ambran Hartono
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics | Vol.1
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v1i1.9002

Abstract

Abstrak. Sistem kendali otomatismenjadi sangat penting saat ini. Teknologi instrumentasi yang berkembang sangat pesat menjadikan sistem kendali otomatis berkembang pesat. Dengan adanya sistem kendali otomatis ditemukan pula gangguan yang memengaruhi sistem, seperti Noise atau sinyal gangguan. Berbagai metode kendali banyak digunakan salah satunya adalah Repetitive Control. Kemudian diperlukanlah pengujian analisis untuk memilih sistem kendali mana yang paling baik dalam menghilangkan sinyal gangguan yang memiliki 3 nilai frekuensi dengan menggunakan sistem Plug-in Repetitive Control (RC) yang dilengkapi dengan filter. Pada penelitian ini digunakan metode Least Common Multiple (LCM) dan metode Multi Repetitive Control (MRC). Hasil penelitian menunjukkan bahwa sistem dengan metode MRC memiliki kecepatan menghilangkan sinyal gangguan paling   baik yaitu 1.8s.Abstract. Automatic control system becomes very important today. The fast growing technology of instrumentation makes the automatic control system grow rapidly. With the existence of automatic control system there is found disturbances that affect the system, such as noise or disturbance signal. Various control methods are widely used, one of them is Repetitive Control. Analytical testing is then needed to choose which control system is best for rejecting disturbance signals that have 3 frequency values using a Plug-in Repetitive Control (RC), using filtered system. This research used Least Common Multiple (LCM) method and Multi Repetitive Control (MRC) method. The results showed that the system with MRC method is slightly faster and best in rejecting disturbance signals with rejecting time 1.8s.
Ammonia (NH3) Gas Control System in Chicken Coops Using Fuzzy Logic Based Internet of Things (IoT) Method Supriadi, Khasbianta; Hartono, Ambran Hartono; Putri, Salsabila Tahta Hirani; Fakhrurraja, Hanif
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.6, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v6i2.34757

Abstract

Chicken productivity increases every year, resulting in air pollution in the form of NH3 generated by chicken waste, which is felt by the residents living around the chicken coop. The purpose of this research is to design an ammonia gas control system using Matlab, with the ammonia gas sensor MQ-135 and the humidity sensor DHT11 as parameters, to minimize the ammonia gas levels. This system operates by transmitting information about the condition of ammonia gas levels using a fuzzy logic control system as the technical decision-making mechanism for driving the exhaust fan based on data from the DHT11 and MQ-135 sensors. In this research, the fuzzy logic method was employed to determine the membership functions for the DHT11 sensor (dry, moist, wet) and MQ-135 sensor (normal, moderate, high), resulting in decisions of safe, moderate, and dangerous levels. The data is monitored on a platform through the Blynk app and Thingspeak, thus connecting the Internet of Things (IoT) to the internet network using the NodeMCU ESP8266 as the microcontroller. This research yields an ammonia gas control system that effectively manages air quality affected by chicken waste, with sensor accuracy levels exceeding 97%.
Development of Perovskite Manganate-Based Materials as Microwave Absorbers (A Literature Study) Haiqal, Amanda; Priambodo, Danang Pamungkas; Faddakiri, Fattah Ardhi
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.6, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v6i2.36991

Abstract

The 5.0 industrial revolution has led to the rapid development of digital devices and radar detection technology. Electromagnetic (EM) radiation generated by digital devices, such as smartphones, computers, and airplanes, is proven to cause great harm to human health. Manganese perovskite is one material that can produce changes such as its crystal structure, electron transfer, electrical properties, and magnetic properties. Doping applied to manganese perovskite-based materials can induce phenomena such as Colossal Magnetoresistance (CMR) and Magnetocaloric Effect (MCE), giving manganese perovskite-based materials great potential to be used as microwave absorbers. Through this article, the development of various manganese perovskite-based materials as microwave absorbers will be reviewed and summarized. Synthesis methods and microwave absorption mechanisms will also be reviewed. This article focuses on the doping of A-site and B-site manganese perovskite-based materials and their performance in absorbing microwaves. Hopefully, this article can be one of the guidelines for designing new manganese perovskite-based materials, to be applied as microwave absorbers.

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