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Jurnal Fisika FLUX

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Published by Universitas Lambung Mangkurat

ISSN : 1829796X EISSN : 25411713 DOI : -

Core Subject : Science, Education,

Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics

Jurnal Fisika FLUX is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of physics including applied physics, which includes: physics instrumentation and computation, biophysics, geophysics, physics materials, theoretical physics, and physics education. Journal use single peer reviewed to publish. This journal is published by Universitas Lambung Mangkurat Press. ISSN 1829-796X (print) and ISSN 2541-1713 (online) Jurnal Fisika FLUX is published twice a year. Articles will be peer reviewed first. Once ready to be published immediately on the current edition.

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Articles 570 Documents

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Perubahan Panjang Lokalisasi dan Kerapatan Keadaan Elektron pada Molekul DNA Poli(dA)-Poli(dT) Karena Medan Magnet Efta Yudiarsah; Andi Muhammad Risqi
Jurnal Fisika FLUX Vol 15, No 2 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

The localization length and the Density Of State (DOS) of electron in a Poly(dA)-Poly(dT) DNA molecule at two temperatures have been calculated for several values of magnetic field. The calculation are carried out on a DNA molecule model that consists of adenine (A) and Thymine (T) nucleobases and sugar-phosphate backbone. The DNA molecule is modeled in tight binding Hamiltonian approachwith semi empirical Slater-Koster theory and Peierls phase factor for introducing the effect of temperature and magnetic field, respectively. In the model, electron is allowed to move between nucleobase sites, backbode sites, and between backbone site and nucleobase site. The localization length is obtained from the smallest Lyapunov exponent which is calculated using transfer matrix method along with Gram-Schmidtorthonormalization procedure. The DOS is calculated using Green’s function methodby taking into account the presence of metallic electrode at both ends of the DNA molecule. The localization length and the DOS change as a result of the change in electron wave phase due to magnetic field. The change is observed at both temperature used in the study, but the change at lower temperature is larger than the one at higher temperature. Thermally agitated vibrational twisting motion perturbs electron motion in the DNA molecule such that the influence of magnetic field on the localization length and the DOS of electron at higher temperature becomes smaller.

Studi Analisa Kualitas Biobriket Campuran Bottom Ash Batubara dan Onggok Tepung Tapioka Menggunakan Karbonisasi Agus Triantoro; Adip Mustofa; Kartini Kartini; Abdurrahman Hanafi
Jurnal Fisika FLUX Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019
Publisher : Lambung Mangkurat University Press

Biobriket merupakan bahan bakar padat yang merupakan alternatif pengganti minyak tanah dan gas yang mempunyai kelayakan teknis untuk digunakan sebagai bahan bakar rumah tangga, industri kecil ataupun menengah. Biobriket juga mempunyai keuntungan ekonomis karena dapat diproduksi secara sederhana, memiliki nilai kalor yang tinggi. Biobriket yang dibuat berasal campuran antara bottom ash batubara dan onggok tepung tapioka. Ketersediaan bottom ash batubara onggok tepung tapioka cukup banyak di Kalimantan Selatan. Bottom ash merupakan sisa hasil pembakaran batubara di PLTU yang saat ini belum banyak di manfaatkan dan hanya dibuang sebagai limbah. Padahal bottom ash batubara ini masih mempunyai nilai kalori yang cukup tinggi sedangkan onggok merupakan ampas dari hasil pembuatan tepung tapioka yang juga belum di manfaatan secara maksimal.Permasalahan yang sering di jumpai dalam penggunaan biobriket bottom ash batubara sebagai bahan bakar energi adalah lamanya penyalaan, bau yang tidak sedap pada saat di bakar, daya rekat briket yang tidak bagus sehingga briket mudah pecah. Tujuan dari penelitian mengetahui komposisi terbaik biobriket berdasarkan komposisi campuran, ukuran partikel dan parameter kualitas bottom ash batubara. Metode penelitian dilakukan dengan uji laboratorium. Parameter uji laboratorium yang digunakan adalah karakteristik biobriket yang meliputi kadar air, kadar abu, kadar volatile matter, nilai kalor, waktu pembakaran dengan variasi komposisi bahan baku dan binder. Berdasarkan hasil pengujian yang telah dilakukan dapat disimpulkan bahwa biobriketcampuranbottom ash batubara onggok tepung tapioka layak untuk di jadikan biobriket sebagai bahan bakar alternatif.Kualitas biobriket paling baik adalah biobriket dengan campuran 70% bottom ash, 20% onggok tepung tapioka dan 10% getah damar dengan hasil analisa Inherent Moisture 14,15%, Ash 8,34%, Volatile Matter 34,89%, Kalori 5401,6 Kkal/kg serta durasi pembakaran 47 Menit 17 Detik.

Preparasi dan Karakteristik Fisis Nanopartikel Magnetit (Fe3O4) Agus Riyanto
Jurnal Fisika FLUX Vol 16, No 1 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

This study aims to identify the effect of preparation temperature on microstructure and magnetic properties of magnetite nanoparticles prepared from FeSO4.7H2O and FeCl3.6H2O by using co-presipitation method without organic solvent and surfactant. Precursors were prepared at 30 oC, 60 oC, and 90 oC under atmospheric pressure. Microstructure and diameter distribution of magnetite nanoparticles were analyzed by using XRD, FTIR, TEM, and imageJ software, while the magnetic properties were analized using VSM. The identification result show that the magnetite phase was formed on all samples with polycrystalline structure. The increasing of preparation temperature was followed by increase in diameter of grains and oxidation rate of magnetite phase into maghemit ( -Fe2O3). The superparamagnetic properties almost can be observed especially in sample prepared at 30 oC, where magnitude of remanent and coersivity is 3.39 emu/g and 23.93 Oe, respectively. The magnitude of remanent and coersivity increases as preparation temperature increases and superparamagnetic effect decrease.KEYWORD :

Pembuatan Sistem Akuisisi Gas Karbon Monoksida Berbasis ATMega8535 Nurhikmah Nurhikmah; Iwan Sugriwan; Ade Agung Harnawan
Jurnal Fisika FLUX Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019
Publisher : Lambung Mangkurat University Press

ATMega8535 microcontroller based data acquisition system for measure carbon monoxide gas with TGS 2600 carbon monoxide sensor has been realized. The equation of sensor characteristic is obtained by compared the value of carbon monoxide gases with voltage signal from TGS 2600 carbon monoxide sensor. The value of carbon monoxide gases concentration measured by Sanfix. The equation of sensor characteristic gave formula V = 0,1266 ln(x) + 0,0049, which V in voltage (volt) and x in part per million (ppm). The voltage signal as a product of sensor conditioned by voltage follower that applying OP07. the output signal from voltage follower connected with port A0, analog input in ATMega8535 microcontroller. Port A0 in ATMega8535 microcontroller has analog to digital converter (ADC) internally. The measurement data is displayed on the LCD character 16x2 and laptop via serial communication with Delphi interface program that it could noted the data in real time and could store the measurement data onto file in the form .xlsx. the system also used XAMPP program to store measurement data onto the form database. The range measurement of measuring instrument made is 6 to 80 ppm.

Analisis Tingkat Resapan Air Menggunakan Sistem Informasi Geografis di Das Tabunio Ahmad Eko Saputra; Ichsan Ridwan; Nurlina Nurlina
Jurnal Fisika FLUX Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019
Publisher : Lambung Mangkurat University Press

The development of development that is so rapid causes more and more land to change into new buildings and settlements that have an impact on the reduction in the area of water catchment areas. Reduced water catchment areas will result in reduced groundwater reserves and will cause natural disasters such as floods. Based on this, efforts need to be made to determine the condition and distribution of water absorption in the Tabunio watershed area. In determining water absorption conditions there are four parameters, namely soil type, rainfall, land cover and slope. The data analysis method used is the overlay method with Geographic Information System (GIS) software. The results of data analysis showed that the study area with an area of 62,558.56 ha was divided into five conditions for water catchment areas. The water recharge conditions were very critical with an area of 32.38 ha, critical conditions covering 13,391.14, rather critical conditions covering an area of 35,769.47 ha, critical conditions ranging from 13,359.27 ha and natural normal conditions covering an area of 6.10 ha.

Karakteristik Termal Mortar Geopolimer Berbasis Abu layang dan Kaolin Alam Muhammad Saukani; Saifullah Arief
Jurnal Fisika FLUX Vol 15, No 2 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Mortar geopolimer berbasis abu layang dengan penambahan metakaolin telah disintesis dan dikatakterisasi sifat termalnya. Rasio SiO2/Al2O3 dalam penelitian ini dipertahankan dengan nilai 4. . Efek subtitusi abu layang dengan kaolin tatakan yang telah dikalsinasi pada suhu 750°C selama 3 jam memberikan informasi peningkatan nilai kuat tekan. Peningkatan nilai kuat tekan ini diyakini akibat berkurangnya kadar SiO2 yang tidak aktif dalam campuran bahan dasar, sehingga reaksi ikatan antara matrik dan partikel-artikel aluminosilikat semakin baik. Daya tahan terhadap suhu pada suhu 750°C selama 4 jam menunjukkan adanya penyusutan volume dan berkurangnya massa sampel, meskipun pengurangan massa sampel terjadi namun massa jenis semakin meningkat dan secara visual tidak terlihat adanya keretakan. Pengujian shock thermal juga menunjukkan bahwa mortar geopolimer yang disintesis mampu menahan adanya perubahan suhu secara mendadak. Oleh sebab itu mortar geopolimer dengan bahan abu layang/kaolin tatakan dapat digunakan sebagai material refraktori.

Pembuatan Alat Ukur Multi Kanal Kelembaban Tanah Berbasis Mikrokontroler Arduino Uno Mila Kharisma; Iwan Sugriwan; Ade Agung Harnawan
Jurnal Fisika FLUX Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019
Publisher : Lambung Mangkurat University Press

Soil moisture very important to be measured per unit of time, especially in peat soils that have high porosity value. The measuring device for detection of soil moisture is realized on this research. The soil moisture measuring instrument is built by three main blocks of an instrument, that are four soil moisture sensors YL-69s, Arduino Uno as measurement processing unit that equipped with sd card as data storage unit and 20x4 character LCD as a display unit of the measurement result. The span value of the measuring device ranges from 0% to 95 % with deviation from 0% to 4.88%.The advantages of the measurement instrument system are simple in the operational process, real-time monitoring and stored automatically.

Identifikasi Potensi Air Tanah Menggunakan Metode Geolistrik Resistivitas Konfigurasi Schlumberger di Kelurahan Bapangsari Kecamatan Bagelen Kabupaten Purworejo Taufik Nur Fitrianto; Supriyadi Supriyadi; Ulil Albab Taufiq; Teguh Maulana Mukromin; Anggit Pranatya Wardana
Jurnal Fisika FLUX Vol 15, No 2 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

This research aimed to determine location and distribution of groundwater in Bapangsari, Bagelen, Purworejo. This research used Vertical Electrical Sounding (VES) method with Schlumberger configuration. Research data were taken by using resistivity meter IPMGEO. This research did on 2 locations with length of line is 180 m. The data were processed using software Microsoft Excel and IP2WIN. Based on result of the research. On the first location, groundwater is at 32,2 m depth with 3,3 m thick. On the first location, groundwater is at 34,6 m depth with 9,58 m thick. Groundwater on the first location is shallower than second location. However, on the first location have over burden. The over burden has big enough resistivity value (higher than 100 ohm m). This value has been identifying of a solid layer. The layer is andesitic breccia. While on second location, the over burden has small enough resistivity value (50 ohm m). This value has been identifying of a sedimentary layer. The layer is weathered breccia and gravel.

Perbandingan Metode Potensiometri dan Spektrofotometri pada Penentuan Formalin Dewi Umaningrum; Radna Nurmasari; Maria Dewi Astuti; Ani Mulyasuryani; Diah Mardiana
Jurnal Fisika FLUX Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v1i1.6148

Penelitian tentang penentuan formalin menggunakan metode potensiometri dan spektrofotometri telah dilakukan. Tujuan dari penelitian ini adalah untuk membandingkan hasil pengukuran kadar formalin antara metode potensiometri menggunakan sensor berbasis Screen Printed Carbon Electrode (SPCE) dengan metode standar spektrofotometri. Metode penelitian diawali dengan membuat sensor formalin yang digunakan untuk mengukur kadar formalin menggunakan selulosa asetat sebagai ionofor. Tahap berikutnya adalah mengukur kadar formalin sampel menggunakan sensor dan metode standar spektrofotometri. Hasil pengukuran kadar formalin kemudian dibandingkan diantara kedua metode tersebut. Hasil penelitian menunjukkan bahwa pada penentuan formalin antara kedua metode tersebut tidak menunjukkan beda nyata.

Implementasi Fuzzy Logic dalam Pembuatan Kontrol Navigasi Mobile Robot Dairoh, Dairoh; Khambali, Mohammad; Mustofa, Trima
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 16, No 1 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Artificial Intelligence is defined as intelligence exhibited by an artificial entity. Intelligence was created and put into a machine that can do the job as do humans. Some kinds of fields that use artificial intelligence include fuzzy logic, expert systems, computer games, neural networks and robotics. The purpose of research is Applying the theory of fuzzy logic in the manufacture of robot control and create teaching materials for the subjects of physics, especially on the concept of a microcontroller or other allied subjects of the research conducted. In this study apply fuzzy logic on the movement of wheeled robot control where in the controlling controlled via a smartphone which is then processed by a microcontroller Arduino that has grown the program by applying the method of fuzzy logic rule. Then by the microcontroller is used as a command to drive the DC motor as a navigation system that course in accordance with the rules created. Every step of the control system provides a signal in the form of a large steering angle (Î¸) which guides the robot to the target of a starting position. The results showed that the application of a system of fuzzy logic can be implemented in a navigation system for a robot control and the results of testing the robot's movement, then obtained some data points specified coordinates with the coordinates of the control robot acquired a 96% accuracy rate.

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Home Page

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Abstract

Contact Name
Sadang Husain

Contact Email
sadanghusain@yahoo.com

Phone
-

Journal Mail Official
jurnalflux@ulm.ac.id

Editorial Address
-

Location
Kota banjarmasin,

Kalimantan selatan

INDONESIA