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INDONESIA
Jurnal Fisika FLUX
ISSN : 1829796X     EISSN : 25411713     DOI : -
Core Subject : Science, Education,
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
PENGARUH ARUS TERHADAP KEKERASAN LOGAM LAS BAJA ST 60 Ma'ruf Ma'ruf
Jurnal Fisika FLUX Vol 11, No 1 (2014): Jurnal Fisika FLUX Edisi Februari 2014
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v11i1.2617

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh arus terhadap kekerasan hasil pengelasan pada logam las baja ST 60. Penelitian ini menggunakan metode eksprimental, pengujian kekerasan dilakukan dengan metode Rockwell B (HRB). Pengujian kekerasan dengan penetrator ball Ø 1/16" dengan beban penekanan 981 N (100 Kgf) pada daerah logam las. Dari hasil penelitian dapat disimpulkan bahwa besar arus berpengaruh terhadap kekerasan hasil pengelasan pada daerah logam las. Semakin besar arus yang digunakan dalam pengelasan, semakin besar nilai kekerasan logam las. Kekerasan tertinggi pada arus 90 A dari arus yang digunakan 70 A, 80 A dan 90 A. Kata Kunci: Pengelasan, Arus, Kekerasan
Identifikasi Suara Vokal Suku Banjar Berdasarkan Frekuensi Formant Arfan Eko Fahrudin; Nofida Risna Diyanti; Tetti Novalina Manik
Jurnal Fisika FLUX Vol 8, No 2 (2011): Jurnal Fisika Flux Edisi Agustus 2011
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.589 KB) | DOI: 10.20527/flux.v8i2.3121

Abstract

Telah dibuat program untuk mengidentifikasi suara vokal suku Banjarberdasarkan frekuensi formant dengan menggunakan metode LPC (Linear PredictiveCoding). Sampel suara vokal diambil dari 30 responden yang terdiri dari 15perempuan dan 15 laki-laki untuk setiap suara vokal dengan frekuensi sampling 8000Hz. Proses yang dilakukan dalam identifikasi suara vokal suku Banjar antara lain:sampling, pre emphasis filter, frame blocking, windowing dan ekstraksi ciri denganmenggunakan metode LPC. Hasil frekuensi formant rata-rata untuk suara vokalperempuan adalah sebagai berikut; untuk suara vokal /a/ F1: 861.96 Hz, F2 : 1227.17Hz, F3: 1686.92 Hz, suara vokal /e/ F1: 783.34 Hz, F2: 1365.78 Hz, F3: 2207.58 Hz,suara vokal /i/F1: 446.94 Hz, F2: 1288.10 Hz, F3: 2583.38 Hz, suara vokal /o/ F1:780.75 Hz, F2:1064.41 Hz, F3: 1536.06 Hz, suara vokal /u/ F1: 523.71 Hz, F2:920.18 Hz, F3:1789.06 Hz. Hasil frekuensi formant rata-rata untuk suara vokal laki-lakiadalah sebagai berikut; untuk suara vokal /a/ F1: 891.09 Hz, F2: 1338.58 Hz, F3:1844.57 Hz, suara vokal /e/ F1: 620.28 Hz, F2: 1446.42 Hz, F3: 1907.88 Hz, suaravokal /i/ F1: 391.00 Hz, F2: 1490.83 Hz, F3: 2313.92 Hz, suara vokal /o/ F1: 663.38Hz, F2: 977.77 Hz, F3: 2124.76 Hz, suara vokal /u/ F1: 488.91 Hz, F2: 912.18Hz, F3: 2074.57 Hz. Hasil identifikasi menunjukkan bahwa setiap suara vokal /a/,/e/, /i/, /o/ dan /u/ mempunyai karakteristik frekuensi formant F1, F2 dan F3 yang khas,sehingga dapat digunakan sebagai pembeda antara vokal satu dengan yang lain.
KENDALI OPTIMAL PADA MASALAH INVENTORI YANG MENGALAMI PENINGKATAN Pardi Affandi; Faisal Faisal; Yuni Yulida
Jurnal Fisika FLUX Vol 12, No 1 (2015): Jurnal Fisika FLUX Edisi Februari 2015
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.354 KB) | DOI: 10.20527/flux.v12i1.1307

Abstract

Banyak  permasalahan yang melibatkan teori sistem dan teori kontrol serta aplikasinya.Beberapa referensi teori yang mengaplikasikan teori kontrol ke dalam masalah inventori. Masalah klasik dalam masalah inventori adalah bagaimana mengatur perubahan permintaan konsumen pada sebuah produk barang jadi. Selain mengalami penurunan ternyata inventori juga bisa mengalami peningkatan, biasanya inventori yang mengalami peningkatan adalah terjadi pada inventori dikarenakan adanya proses produksi yang berlangsung secara terus menerus sedangkan permintaansedikit. Pada saat proses produksi berlangsung secara terus menerus menyebabkan bertambahnya jumlah inventori. Hal ini mengakibatkan terjadinya peningkatan jumlah inventori.Masalah ini salah satunya dapat dimodelkan dan diselesaikan dengan menggunakan teknik kontrol optimal
IDENTIFIKASI AKUIFER AIR TANAH KOTA PALOPO MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS KONFIGURASI SCHLUMBERGER Baso Usman; Rahma Hi Manrulu; Aryadi Nurfalaq; Emi Rohayu
Jurnal Fisika FLUX Vol 14, No 2 (2017): 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 | Full PDF (1691.215 KB) | DOI: 10.20527/flux.v14i2.4091

Abstract

Telah dilakukan penelitian untuk mengidentifikasi akuifer air tanah di Kecamatan Sendana Kota Palopo menggunakan metode geolistrik tahanan jenis konfigurasi Schlumberger. Metode geolistrik tahanan jenis merupakan salah satu dari kelompok metode geofisika yang digunakan untuk mempelajari keadaan bawah permukaan dengan cara mempelajari sifat aliran listrik di dalam batuan di bawah permukaan bumi. Metode geolistrik tahanan jenis dilakukan dengan cara menginjeksikan arus listrik ke dalam bumi melalui dua elektroda arus dan potensialnya diukur melalui dua elektroda potensial. Bila arus listrik  diinjeksikan ke dalam suatu medium dan diukur beda potensialnya (tegangan), maka nilai hambatan dari medium tersebut dapat diperkirakan. Metode kerja penelitian ini yaitu dengan membuat sebuah lintasan dengan panjang bentangan paling kecil (AB/2) 1,5 hingga panjang bentangan terjauh (AB/2) 200 m, kemudian melakukan pengukuran dengan resistivitymeter, data yang diperoleh kemudian diolah menggunakan software IP2Win untuk mendapatkan gambaran struktur bawah permukaannya. Hasil interpretasi memperlihatkan bahwa akuifer di kecamatan Sendana kota Palopo berupa pasir dan kerikil yang memiliki nilai tahanan jenis 21,6 – 81,3 Ωm pada kedalaman lebih dari 45 m.
Analisa Kesesuaian Lahan Dan Potensi Perkebunan Kelapa Sawit di Kabupaten Tanah Laut Menggunakan Sistem Informasi Geografis Widiarti Widiarti; Nurlina Nurlina
Jurnal Fisika FLUX Vol 9, No 1 (2012): Jurnal Fisika Flux Edisi Februari 2012
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.163 KB) | DOI: 10.20527/flux.v9i1.3130

Abstract

Kalimantan Selatan mempunyai potensi untuk perkebunan kelapa sawit yang cukup luas. Wilayah yang mempunyai potensi perkebunan kelapa sawit ini yaitu Kabupaten Tanah Laut. Penelitian ini dilakukan tentang kesesuaian dan potensi perkebunan kelapa sawit di Kabupaten Tanah Laut menggunakan sistem informasi geografis. Penelitian ini bertujuan untuk menganalisa kesesuaian lahan dengan parameter curah hujan, suhu udara, jenis tanah, dan topografi untuk perkebunan kelapa sawit di Kabupaten Tanah Laut menggunakan sistem informasi geografis serta mengetahui potensi perkebunan kelapa sawit di Kabupaten Tanah Laut. Metode yang digunakan untuk analisa kesesuaian lahan dan potensi perkebunan kelapa sawit yaitu metode matching. Hasil pengolahan data didapatkan luas kesesuaian lahan dalam kategori sesuai (S1) sekitar 313.495,859 ha (81,58%), cukup sesuai (S2) sekitar 57.583,805 ha (14,98%), sesuai marginal (S3) sekitar 12.189,264 ha (3,17%) dan tidak sesuai (N) sekitar 1.023,398 ha (0.27%). Luas lahan yang mempunyai potensi perkebunan yaitu lahan dalam kategori berpotensi (P1) seluas 65.830,00 ha (18,13%), cukup berpotensi (P2) seluas 33.050,00 ha (9.10%), dan berpotensi marginal (P3) seluas 4.996,86 ha (1,38%).
UJI PASIR LIMBAH TAMBANG INTAN CEMPAKA Ninis Hadi Haryanti
Jurnal Fisika FLUX Vol 12, No 2 (2015): Jurnal Fisika FLUX edisi Agustus 2015
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.178 KB) | DOI: 10.20527/flux.v12i2.2611

Abstract

ABSTRACT. During diamond mining process, waste is usually found. That diamond mine waste (tailing) that is categorized as gangue mineral is sand and gravel. One of gangue minerals which are in the form of sand during diamond mine in Cempaka Banjarbaru is Zircon sand.  Until now, that zircon sand has not been utilized optimally. Based on the size measurement of sand grains from diamond mine waste, it is passed the standard of filter size number 4 and related with 4.75 mm filter hole. However the result includes 2.69 Apparent Specific Gravity as well as 1.41 g/cm3 density. That result is categorized into normal aggregate type and lower compared to other sand location (Matraman area). By looking at the morphology and size of sand grains from diamond mine waste, it is gained smaller and tighter particles distribution, equal particle distribution and varied particle size. When looking at the form of sand grains, that diamond mine waste sand is categorized under Sub Angular Grain. Based on EDX spectrum analysis result, it is contained C, O, Al, Si, Ti, Fe, Cu, Zr. Based on 3 different samples of diamond mine waste sand, it is gained average Zr value which is the first Zr sample 1.5, the second Zr sample 0.485, the third Zr sample 0.925. The highest Zr value is in the first sample, which is the sample in sand container box, with average Zr 1.5% composition of Zircon. From the 3 samples of diamond mine waste sand in the different location, it is gained average Zr values which are the first Zr sample 1.5, the second Zr sample 0.485, the third Zr sample 0.925. The highest Zr value is in the first sample, which is the sample in sand container box, with average Zr 1.5% composition of Zircon. Keywords : diamond mine waste, Zircon sand
Model 3D Sebaran Lindi pada Lapisan Tanah di Area TPA Batulayang Pontianak Berdasarkan Nilai Resistivitas Muhardi Muhardi; Muliadi Muliadi; Zulfian Zulfian
Jurnal Fisika FLUX Vol 17, No 2 (2020): 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 | Full PDF (1261.357 KB) | DOI: 10.20527/flux.v17i2.7713

Abstract

The Final Disposal Site (TPA) of Batulayang Pontianak, West Kalimantan, uses an open dumping system so that it produces waste water (leachate). Its area on peatlands creates problems, especially in the distribution of leachate. The purpose of this study was to create a 3D model of leachate distribution in the soil layer in the TPA area of Pontianak Batulayang, West Kalimantan, based on the distribution of resistivity values. This study using the geoelectric resistivity method by the Wenner-Schlumberger configuration. The tracks that have been used are six, having a length of 117 m each. The results showed that the soil layer contaminated by leachate spreads from a depth of 5 m to 23.6 m. This layer is interpreted as sandy clay and sand, having a resistivity value of 0.152 Ωm to 13 Ωm. The results also showed that leachate comes from the West, North, and South directions, which spread to all study areas.
Influence Annealing Temperature of Working Electrode and Scattering Layer to Efficiency of Dye-Sensitized Solar Cell (DSSC) Mar Atun Shofwati; Fahru Nurosyid; Yofentina Iriani
Jurnal Fisika FLUX Vol 16, No 2 (2019): 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 | Full PDF (756.092 KB) | DOI: 10.20527/flux.v16i2.4914

Abstract

DSSC was kind of solar cell based on dye as sensitizer or photon absorber. Scattering layer method used to optimize photon scattered process on working electrode. In this research, variation temperature annealing of scattering layer have done to find out the effect toward DSSC’s efficiency. TiO2 nanopowder and TiO2 transparent are used as semiconductor layer and scattering layer, respectively which deposited with spin coating method. Platinum was deposited on counter electrode with brush painting method. TiO2 nanopowder was annealed at 400oC, while scattering layer were annealed at variation temperature i.e. 400oC, 450oC, 500oC, and 550oC. Dye Ruthenium Complex N719 was used as sensitizer on DSSC’s structure. Result of XRD characterization on working electrode show that highest crystallite size is 18.92 nm with annealing process of scattering layer at 450oC and decreased when the temperature is over 400oC. Photovoltaic characterization used Keithley I-V meter. The annealing process of scattering layer at temperature 450oC has good photovoltaic parameter. This cell has short circuit current (Isc) is  A, open circuit voltage (Voc) is 0.39 V, and fill factor is 0.51. The value of Voc was influenced by the absorption of dye in TiO2 layer. Annealing scattering layer at 450oC produce crystallite structure with higher TiO2 surface area, it can optimize photon absorption of dye more than the annealing process over 450oC. Scattering layer which annealing at 450oC can increase efficiency of DSSC cells from  % to  %.
Pengaruh Parameter Milliampere-Second (mAs) terhadap Kualitas Citra Dan Dosis Radiasi Pada Pemeriksaan CT scan Kepala Pediatrik Muhammad Irsal; Guntur Winarno
Jurnal Fisika FLUX Vol 17, No 1 (2020): 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 | Full PDF (549.256 KB) | DOI: 10.20527/flux.v17i1.7085

Abstract

Radiographers are responsible for administering radiation doses according to the principle of As Low As Reasonably Achievable (ALARA), to optimize the use of CT parameters to produce good image quality by minimizing radiation doses. The purpose of this study was to determine the effect of mAs parameters on image quality and radiation dose received by pediatric CT head examination patients. The research method to perform image processing results of examination using radiant viewer and analysis of value Contrast to noise ratio (CNR) as a parameter of image quality and CTDIvol to determine the estimated radiation dose, then an analysis is performed to determine whether there is an influence of mAs on the CNR and CTDIvol values. The mean value of kV 116 ± 8.28, the mean value of parameter mAs 161.5 ± 63.46, the mean SNR parameter value is 7.5 ± 0.8, the mean return value of CNR parameter was 0.318 ± 0.291, the mean value of the CTDIvol parameter is 18.68 mGy ± 4.55 mGy, the average value of DLP parameters was 408.7 mGy x cm ± 105.2 mGy x cm, the mean value of parameter DLP is 441.2 mGy x cm ± 155.2 mGy x cm. With linear regression analysis of test results between mAs to CNR is R2 = 0.045. then to the results of linear regression between mAs against CTDI is R2 = 0704, the estimated radiation dose limit for the average value of CTDIvol 18.68 mGy and the average value of DLP 408.7 mGy x cm, this means the protocol CT scan of the head of the pediatric use is still within safe limits by Diagnostic Reference Level of BAPETEN in 2018 to pediatric head CT examination
Ekstarsi Ciri Citra Ultrasonografi Abdomen pada Regional 3, 6 dan 8 Menggunakan Metode Gray Level Co-Occurance Matrix (GLCM) Maslebu, Giner; Laga, Matius Umbu; Setiawan, Andreas
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 17, No 2 (2020): 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 | Full PDF (891.928 KB) | DOI: 10.20527/flux.v17i2.6510

Abstract

ltrasonography is the most popular modality used for clinical applications to detect abnormalities related to abdominal organs such as the liver, kidneys, uterus and other organs. In the context of organ recognition, image processing techniques are needed to improve image quality without eliminating important information contained in it. The purpose of this study was to identify prominent features of organs found in regional 3 (left liver lobe), 6 (left kidney and spleen) and 8 (bladder and prostate) from the abdomen using the gray level co-assurance matrix (GLCM) method. with features that are used, among others: contrast, correlation, energy and homogenity in the direction 0°, 45°, 90° and 135°. The results obtained show that each organ has a GLCM value that varies between one organ and another organ, namely regional Hypochondrium Dexta for left liver lobe organ, contrast 〖5.1473 x10〗^(-4)-〖1 x10〗^(-3), corrlation 0.9786-0.9890, energy 0.9073-0.9754 and homognity 0.9995 - 0.9997. Lumbaris Sinistra Regional for left ginjla organ, contrast 〖3.8526 x10〗^(-4)- 〖6.2959 x10〗^(-4), corrlation 0.9737 - 0.9862, energy 0.9737 - 0.9862 and homognity 0.9997-0.9998 while spleen, contrast 〖6.0350 x10〗^(-4)  - 9.3762 x 〖10〗^(-4), corrlation 0.9640-0.9812, energy 0.9493-0.9816 and homognity 0.9995 - 0.9997. Regional Hipogastrum in bladder organs, contrast 4.0614〖 x10〗^(-4)- 9.9296 〖x10〗^(-4), corrlation 0.9770 - 0.9890, energy 0.9085 - 0.9884 and homognity 0.9995 - 0.9998 for prostate organs, contrast 3.0383 〖x10〗^(-4)-3.1532 〖x10〗^(-4), corrlation 0.9727 - 0.9738, energy 0.9877 - 0.9885 and homognity 0.9998. The range values represent the organs studied. The results of the research obtained indicate that the features of GLCM can be used to identify organs in regions 3, 6 and 8.

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