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All Journal Jurnal Ilmiah Aplikasi Isotop Radiasi Gravitasi Omega: Jurnal Fisika dan Pendidikan Fisika Jurnal Fisika FLUX Panrita Abdi - Jurnal Pengabdian pada Masyarakat Jurnal Elektronika dan Telekomunikasi Indonesian Physical Review Makara Journal of Science

Dahlang Tahir

Department Of Physics, Hasanuddin University, Makassar 90245

Author-ID : 444489

Astronomy Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Other

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Studi Uji Kesesuaian Selisih Lapangan Kolimasi pada Pesawat Mammografi Analog dan Digital Fitriani Fitriani; Bualkar Abdullah; Dahlang Tahir
Jurnal Fisika FLUX Vol 16, No 2 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Study of collimation field difference suitability test on analog and digital mammography at leading hospital in Makassar from 2016-2018. This test was carried out by using four coins of the same size placed on the edge of the collimator lamp field, one different size coin was placed on the table edge of the chest wall section, and one coin was placed on the surface under the compression pedal to coincide with the edge of the chest wall. The results of the p value obtained for each measurement point, both for the difference of the light collimation field toward the X-ray beam and the difference of X-ray beam collimation field toward image receptor have the same value of 0.000 (p < 0.05). This value states that there are significant differences in the collimation field difference from 2016-2018. The results of collimation field difference suitability test on analog and digital mammography are still within the tolerance limits recommended by BAPETEN, for the difference of the light collimation field toward X-ray beam ≤ 1% SID and the difference of X-ray beam collimation field toward image receptor ≤ 2% SID. This shows that mammography is feasible and able to operate safely for patients and non-patients.

Pembuatan Prototipe Dye Sensitized Solar Cell (DSSC) Menggunakan Antosianin Dari Dye Bunga Kenikir (Cosmos Caudatus L.) dan Bunga Zinnia ( Zinnia Peruviana) Eunike Dwioknain; Hardianti Hardianti; Dahlang Tahir; Paulus Lobo Gareso
Jurnal Fisika FLUX Vol 16, No 1 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Prototype dye sensitized solar sel (DSSC) menggunakan antosianin dari bunga Kenikir (Cosmos Cudatus L.) dan bunga Zinnia (Zinnia Peruviana) untuk pertama kalinya telah di fabrikasi. Prototype DSSC dibuat dalam bentuk struktur sandwich, dengan menggunakan metode spin coating untuk deposisi lapisan TiO2., Kemudian dikarakterisasi menggunakan XRD yang menunjukkan Kristal TiO2 berada pada fase anatase, dengan ukuran Kristal sebesar 37,99 nm menggunakan persamaan Debye Scherrer dan 30,10 nm menggunakan metode UDM. Hasil spektrum UV-Vis dalam rentang 300 nm - 800 nm, memperlihatkan absorbansi masing-masing untuk dye bunga Zinnia, bunga Kenikir, dan dye campuran adalah 331 nm; 328 nm; 327 nm. Hasil FTIR menunjukkan adanya senyawa antosianin pada bahan dye yang ditunjukkan dengan adanya ikatan senyawa flavonol, karboksil dan hikdroksil. Keluaran yang di hasilkan dari prototype DSSC berupa arus dan tegangan yang kemudian di akumulasi untuk menghitung efisiensi DSSC. Efisiensi DSSC sebesar 0,0193 % pada dye bunga Zinnia dengan lama perendaman 66 jam. Efisiensi dari DSSC yang terbaik adalah dye dari bunga Zinnia bila dibandingkan dengan bunga Kenikir dan campuran dye dari bunga Kenikir dan bunga Zinnia.

Fabrikasi Bahan Penyerap Gelombang Elektromagnetik Berbasis CuC Hendri Hendri; Bualkar Abdullah; Dahlang Tahir
Jurnal Fisika FLUX Vol 15, No 2 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Fabrikasi bahan penyerap gelombang elektromagnetik berbasis CuC telah dilakukan. Tembaga Karbon (CuC) diolah dengan metode kompaksi/pemadatan, karakterisasi dilakukan dengan menggunakan XRD, FTIR dan VNA. Penyerap gelombang elektromagnetik (reflection loss (RL)) diperoleh pada rentang -17,73 dB hingga -24,94 dB. Nilai RL dipengaruhi oleh konsentrasi karbon aktif (AC). Spectrum RL terbaik diperoleh pada frekuensi 4 GHz – 5 GHz.

Sintesis Komposit ZnO/Ca3(PO4)2 menggunakan metode Sol-gel sebagai Material Fotokatalis Limbah Cair Industri (Metilen Biru) Nurul Fajri R Tang; Dahlang Tahir; Heryanto Heryanto
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 1 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

This study use composite ZnO/Ca3(PO4)2 material was synthesized by using the sol-gel method. Composite material ZnO/Ca3(PO4)2 is made from beef tailbone which is heated at a temperature of 300 for 10, 90, 120, and 240 minutes. Samples were characterized using X-ray diffraction ( XRD ), Fourier transforms infrared ( FTIR ) dan UV - Visible ( UV-Vis ). Quantitative analysis of XRD spectra showed the lowest crystal size with a diameter of 21.71 nm on heating for 90 m. The results of the FTIR spectrum show the vibration of the PO4 and ZnO bond at wavenumber 1039 cm-1 and 400-500 cm-1. The best percentage of degradation is indicated by small crystal size and high infrared absorption by O-H bonds. The degradation results reached 93.98% in just 5 minutes with an energy gap of 3.84 eV. Based on these results, the ZnO/Ca3(PO4)2 composite is one of the promising and potential catalyst materials to solve the problem of industrial waste pollution, especially methylene blue.

Sintesis Nanopartikel Zno/Al2(So4)3 Dengan Metode Mechanical Alloying Sebagai Katalis Limbah Cair Untuk Meningkatkan Ketersediaan Air Vika Sri Anti; Heryanto Heryanto; Dahlang Tahir
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 1 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

ZnO/Al2(SO4)3 synthesized by mechanical alloying method (1, 10, and 15 hours) was applied as methylene blue (MB) photodegradation. Fourier transform infrared (FTIR), X-Ray Diffraction (XRD), and Uv-Visible (Uv-Vis) were used to characterize the Physico-chemical properties of the composites. The results of XRD and FTIR characterization showed an average crystal size of 50.02 nm and the lowest transmittance value (%) at 10 hours milling, the degradation efficiency was much influenced by crystallinity speed, functional groups, and milling time. In this study, the optimal degradation based on the results of the Uv-Vis was shown by the sample ZnO/Al2(SO4)3 for 10 hours milling with a degradation percentage of 84.87%. Furthermore, it was found a ZnO/Al2(SO4)3 composite with a very short degradation time of 20 minutes. In order to reduce water pollution in environments, composite based on natural material is a promising solution due to their ability to break up pollutant radical compounds bonding.

Co-Authors A'yun, Arini Qurrata A. Arifin Abdullah, Bualkar Arsita sita Bayu Aditya Nugraha Chairil Anwar Chairil Anwar Dani, Ali Umar Destalina, Destalina Erlyta Septa Rosa Erlyta Septa Rosa Eunike Dwioknain Fitriani Fitriani Gareso, Paulus L Gareso, Paulus Lobo Hamsi, Taufik Hardianti Hardianti Hee Jae Kang Hee Jae Kang Hendri Hendri Heryanto Heryanto Ida Laila Ilyas, Sri Dewi Astuty Inayatul Mutmainna, Inayatul Isnaeni Isnaeni Isnaeni Isnaeni Isnaeni Jojo Hidayat Jojo Hidayat Jojo Hidayat June Mellawati Lorna, Lorna Mujtahid, Fitriah Muqoil Darussalam Natalita Maulani Nursam Nugraha, Bayu Aditya Nurlaela Rauf Nurlindah Hamrun Nursam, Natalita Maulani Nurul Fajri R Tang Putri, Radha Hartina R Pradana Ramlan, Nurul Mutmainnah Shobih Shobih Shobih Shobih Shobih Shobih Siti Fatimah Siti Fatimah Sri Dewi Astuty Ilyas Syamsir Dewang Syamsul Arifin Vika Sri Anti Zaky Mubarak Zaky Mubarak, Zaky

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