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All Journal Teknosains: Media Informasi Sains dan Teknologi SITEKIN: Jurnal Sains, Teknologi dan Industri JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX Jurnal Ilmu Fisika Jambura Physics Journal Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat KARST : Jurnal Pendidikan Fisika dan Terapannya Jurnal Fisika dan Terapannya Journal of Health, Education, Economics, Science, and Technology (J-HEST) Progressive Physics Journal Media Ilmiah Kesehatan Indonesia
jumardin jumardin
Physics Department, UIN Alauddin Makassar
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Journal : JOURNAL ONLINE OF PHYSICS

 1 
ANALISIS SIFAT OPTIK NANO PARTIKEL KARBON BERBAHAN DAUN PANDAN WANGI (PANDANUS AMARYLLIFOLIUS) DENGAN METODE SINTESIS HIDROTERMAL Rahmaniah Nalwi; Akhiruddin Maddu; Mersi Kurniati; Jumardin Jumardin
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 3 (2023): JOP (Journal Online of Physics) Vol 8 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i3.26728

Abstract

Penelitian ini bertujuan untuk menentukan sifat optik, energi pergeseran Stokes, energi celah pita (Eg), gugus fungsi senyawa kimia dan ukuran karbon nano partikel atau Carbon Nanoparticles (CPNs). Sifat optik terdiri dari absorbansi dan intensitas flouresens yang dihasilkan oleh metode sintesis hidrotermal (150, 160, dan 180) ºC. Panjang gelombang absorbansi dan intensitas flouresens terdeteksi dengan metode spektroskopi UV-Vis (396.31, 399.61, dan 411.24) nm dan eksitasi laser 405 nm untuk emisi flouresens (524.18, 512.04, dan 510.92) nm. Energi pergeseran Stokes diperoleh berdasarkan perbedaan energi foton untuk ekesitasi (absorbansi) dan emisi (flouresen) dengan nilai (0.59, 0.55 dan 0.69) eV. Energi celah pita (Eg) ditentukan dengan mengekstrapolasi grafik ke rentang linier untuk memotong sumbu energi foton. Nilai Eg adalah (2.55, 3.43, dan 2.50) eV. Spektrum dan nilai koefisien ekstensi (k), konduktivitas optik (σopt) meningkat sedangkan indeks bias (n) menurun sering bertambahnya suhu hidrotermal. Spektrum FT-IR dan ukuran CNPs dilakukan dengan menggunakan sampel suhu 180 ºC. Gugus fungsi kimia yang terbentuk adalah C-H, C-N, N=C=S, O=C=O serta senyawa Nitrogen (NO2). Ukuran rata-rata nano partikel karbon adalah 11.09 nm berdasarkan intensitas (%), volume (%) dan nomor (%) partikel pada sampel CNPs.
ANALISIS NILAI COMPUTED TOMOGRAPHY DOSE INDEX (CTDI) PADA PHANTOM KEPALA DI INSTALASI RADIOLOGI RUMAH SAKIT UMUM DAERAH SAYANG RAKYAT MAKASSAR Ilham, Ilham; Zelviani, Sri; Jumardin, Jumardin; Bariah, Khaerul
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 1 (2024): JOP (Journal Online of Physics) Vol 10 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i1.37149

Abstract

This research aims to determine the CTDI value on a CT Scan aircraft using Dose Profiler and to determine the comparison of the CTDI (Computed Tomography Dose Index) value on the surface of each measurement position. The measurement method was carried out by measuring the CT Scan radiation dose with the CTDI value on the phantom using a RaySafe multimeter at a voltage of 130 kV, using a thickness of 10 mm, a time current accuracy of 100 mAs, 200 mAs and 300 mAs. The research results show the dose received on the surface of each type of phantom position with different time current accuracy respectively for a time current of 100 mAs at the center (9.139 mGy), type 1 (9.606 mGy), type 2 (9.170) type 3 (9.221) , and type 4 (9,210). A time current of 200 mAs is found at the center (9,110 mGy), edge 1 (9,578 mGy), edge 2 (9,546 mGy), edge 3 (9,224 mGy), and edge 4 (9,200 mGy). A time current of 300 mAs is found at the center position (18.39 mGy), edge 1 (19.33 mGy), edge 2 (19.18 mGy), edge 3 (18.48 mGy), and 4 (18.51 mGy) . Time-current variations affect the radiation dose that can be received by the phantom and have a linear influence on the CTDIvol value.
Co-Authors Abdul Munim Abdul Munim Thariq Akhiruddin Maddu Andi Syam Rizal Arif Wijaya Bariah, Khaerul Dg Manarang, Hidayat Dwi Febri Isradianti Dwi Febri Isradiati Ferdianti, Andi Tasya Firman Firman Fitriana Fitriana Fitriyanti Fitriyanti Harmiati, Supri Hidayat, Serli Hatul Ibrahim, Dewi Kartika Sari Ilham Ilham Isnaeni Isnaeni Isnaeni Isnaeni Isradianti, Dwi Febri Janna, Miftahul Jasdar Agus Khaerul Bariah koekoeh santoso Kokoeh Santoso Kurniati Abidin, Kurniati M. Ichzan Mahyuddin, Rahmawati Manarang, Hidayat DG Mersi Kurniati Minarti Minarti Minarti Minarti Muhammad Fawzy Ismullah Massinai Nur Isnaeni Nurdin, Supriadi Nurhafida Turayni Nurul Fuadi Rahmaniah Nalwi Rahmaniah Nalwi Safitri, Aan Sahara Sahara Sahara Sitti Nurrahmi Suci Khusnul Amelia Ulandari, Resky Umar, Eka Putriani Ummi Kalsum Wahyullah Wahyullah Wahyullah, Wahyullah Zelviani, Sri