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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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SYNTHESIS OF CARBON DOTS (CDS) AND DETERMINATION OF OPTICAL GAP ENERGY WITH TAUC PLOT METHOD Jumardin Jumardin; Akhiruddin Maddu; Koekoeh Santoso; Isnaeni Isnaeni
Jambura Physics Journal Vol 3, No 2 (2021): October 2021
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v3i2.11235

Abstract

Carbon Dots (CDs) which have been synthesized using the laser ablation method show the presence of UV-Vis absorption in the wavelength range of 303 nm to 333 nm for absorbance and 495 nm to 503 nm for fluorescence. Changes in the time duration 1, 2, 3 hours of CDs resulted in changes in the optical energy gap. The optical energy gap valuesare distinguished by the type of indirect transition (n=2) is 3.40 eV (1 hour), 3.15 eV (2 hour), 2.85 eV (3 hour) and direct transition (n=1/2) is 2.58 eV (1 hour), 2.31 eV (2 hour), 1.70 eV (1 hour).
Sintesis Carbon Dots (CDs) Berfluoresensi untuk Bioimaging dengan Metode Ablasi Laser. Jumardin Jumardin; Akhiruddin Maddu; Kokoeh Santoso; Isnaeni Isnaeni
Jurnal Ilmu Fisika Vol 15 No 2 (2023): September 2023
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.15.2.91-105.2023

Abstract

Carbon Dots (CDs) were synthesized using laser ablation by focusing the laser beam on carbon (Tea) material in colloid (CH3) for 3 hours. UV-Vis spectroscopic and fluorometric characterization showed absorption of the wavelength peaks caused by the control treatment and after laser ablation and coating using Poly Ethylene Glycol (PEG400). The excitation and emission energies are formulations of CDs absorbance wavelength and fluorescence intensity. The absorbance coefficient is obtained based on the absorbance value of the cuvette thickness. The transmittance value (T) is obtained based on the absorption coefficient multiplied by 100%. CD fluorescence wavelength based on control parameters was 489 nm. After laser ablation was 496 nm, and after coating was 511 nm. CDs morphology and size characteristics are 4 nm to 10 nm based on TEM measurements. Fluorescence analysis for bioimaging applications on the luminescence intensity value of internalized blue CDs in zebrafish eye organs. The average intensity of CDs in the eye organs, gill, intestinal, dorsal, and tail injection points was 88.15 %, 91.58 %, 92.76 %, and 0.00 %.
THE EFFECT OF HYDROTHERMAL TEMPERATURE AND UREA DOPING TIME ON THE OPTICAL PROPERTIES OF LEMONGRASS-BASED CARBON NANOPARTICLES (CNPs) Rahmaniah Nalwi; Akhiruddin Maddu; Mersi Kurniati; Jumardin Jumardin
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19048

Abstract

Carbon Nano Particles (CNPs) sourced from spiced lemongrass have been produced by the hydrothermal method at hydrothermal temperatures of 120, 140, 160 and 180 0C. The Stokes energy shift occurs due to this absorption transition and the spectrum width is determined by the electronic transition from one energy state to another. This event occurs due to the difference in energy between the two adjacent states due to the smaller vibrational state when compared to the electronic state of the CNPs.  The carbon nanoparticles (CNPs) size measurement results showed a peak value of 38.63 nm.  Functional group analysis by FTIR spectroscopy showed that the CNP consists of C=C, C-O, OH and C-N-C bonds. The Urbach energy (Eu) increased with increasing hydrothermal synthesis temperature at two hours (0.13, 0.16, 0.19 and 0.29) eV and three hours (0.12, 0.17, 0.19 and 0.28) eV. The bandgap energy (Eg) decreased with increasing hydrothermal synthesis temperature to two hours (2.30, 2.24, 2.00 and 1.92) eV and three hours (2.22, 2.20, 2.17 and 1.75) eV. The expansion of urea as a nitrogen source was carried out at a aqueous temperature of 180 0C for 2 hours and 3 hours within the blend of CNPs. The addition of urea gave a different effect on the bandgap energy (Eg) and Urbach energy (Eu) on the two CNPs. The bandgap energy (Eg) both increased from two hours (1.92 eV) to three hours (2 .22 eV), while urbach energy (Eu) decreased for a duration of two hours (3.336 eV) to three hours (3.330 eV) after adding urea. hydrothermal temperature due to synthesis time so that the structure of the CNPs becomes more stable and homogeneous
IDENTIFIKASI UNSUR TANAH LITOSOL DENGAN METODE XRF (X-RAY FLUORESCENCE) DAN FTIR (FOURIER TRANSFORM INFRA RED) BERDASARKAN TITIK ELEVASI DI DESA SAMANGKI KECAMATAN SIMBANG KABUPATEN MAROS Jumardin Jumardin; Andi Syam Rizal; Minarti Minarti; Abdul Munim Thariq; Nurhafida Turayni; Wahyullah Wahyullah
Karst: Jurnal Pendidikan Fisika dan Terapannya Vol 6 No 1 (2023): Karst : Jurnal Pendidikan Fisika dan Terapannya
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/karst.v6i1.1733

Abstract

XRF method to determine elemental content and FTIR test to determine the nature of chemical compounds (functional groups) of Litosol soil at the slope (elevation angle) and the distance of the research trajectory lines. The identified elemental levels are Fe, Si, Ti, K, Mn and Ca. Fe represents the highest elemental content value for each research path. Fe for paths (1-2) are 23.82 % and 37.69%, tracks (5-6) are 23.11% and 37.47%, and paths (9-10) are 40.44% and 33.99% at different elevation angles. The lowest element level is Ca. The value of Ca for each track is 0.24% and 0.66% (1-2), 0.28% and 0.30% (5-6) and 0.27% and 0.62% (9-10) for each different elevation angle. The FTIR method to determine functional groups (chemical compounds) uses the same parameters as the XRF method. The O-H functional groups were detected at wave numbers 3698.31 cm-1 and 3620.34 cm-1 with the theoretical accuracy ranges of 3700-3000 cm-1 and 3590-3650 cm-1. The C=C which is a double bond functional group was detected at wave number 1640.8 cm-1 in the theoretical range of 1610-1680 cm-1. The C-H functional group on each track was detected in three different types of wave numbers with values of 908.99 cm-1, 786.86 cm-1 and 746 cm-1, respectively. The range of wave number accuracy for C-H is 690-900 cm-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 POTENSI SUMBER DAYA BATUGAMPING DI KAWASAN KARST DESA SAMANGKI, KABUPATEN MAROS, SULAWESI SELATAN Minarti Minarti; Jumardin Jumardin; Abdul Munim; Muhammad Fawzy Ismullah Massinai; Arif Wijaya
JFT : Jurnal Fisika dan Terapannya Vol 8 No 2 (2021): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i2.26239

Abstract

Research has been carried out in Samangki Village which aims to analyze the potential of limestone resources using the Geoelectrical Resistivity Method with the Wenner-Schlumberger configuration. Data were collected at 801904.40-802051.05 NE and 9440758.03-9440548.93 SW for 3 lines along 120 m with 10 m electrode space in a track. Acquired data were processed using Microsoft Excel, Notepad, RES2DINV, ArcGIS, and Google Earth applications to produce resistivity cross-sections and other supporting maps. Based on data interpretation, it shows that the low resistivity zone is an alluvium deposit (Qac) with resistivity value of 17.58 to 170 Ωm; and the high resistivity zone indicates the presence of limestone which is part of the Tonasa Formation (Temt). The presence of limestone on line-1 with resistivity value of 326.00 to 931.90 Ωm at position(x) 60 to 90 m, in depth(y) 1.25 to 9.26 m as shallow area, and at position 40-45 m in depth 16 to 19.8 m as the deepest area. Then the limestone on line-2 is indicated as a subsurface karst tower with a resistivity value of 462.00 to 809.36 Ωm at position 30 to 50 m in depth 1.25 to 19.8 m. Limestone also located on the northeastern edge of line-3  with resistivity values of 431.00 to 739.66 Ωm at a position of 12.5 to 17.5 m in depth of 1.25 to 6.38 m. It proves that Samangki Village has large potential for limestone resources. This research need further geoelectrical study with broad coverage area and geochemical analysis for detail karst characterization
Uji Kesesuaian Kinerja dan Analisis Reproduksibilitas Akurasi Tegangan Tabung Pesawat Sinar-X di Balai Pengamanan Alat Fasilitas Kesehatan Makassar Nur Isnaeni; Suci Khusnul Amelia; M. Ichzan; Jumardin, Jumardin; Sitti Nurrahmi; Jasdar Agus; Dwi Febri Isradianti; Khaerul Bariah
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.47855

Abstract

The X-ray beam collimation test, voltage accuracy test, reproducibility test, and fourth is the X-ray beam output test (Half Value Layer) on the Mobile X-ray aircraft. This testing aims to determine the standards that have been set. Tests that have been carried out on the illumination and the difference between the collimation field of the beam and the X-ray beam show that the results obtained have passed the test on an X-ray aircraft. Both tests are in accordance with established standards. Reproducibility testing is carried out by measuring the radiation output (mGy) at the same settings repeatedly. The data shows a corrected mean of 0.075 mGy with a standard deviation of 0.0034, indicating that the X-ray aircraft has good reproducibility in producing consistent radiation output. The mobile X-ray unit tested had sufficient accuracy and reproducibility that complied with established standards and demonstrated the reliability of the device in clinical practice. X-ray beam output testing was carried out and a corrected HVL value was obtained which was greater than the test pass value. The results obtained are in accordance with established standards.
PENGARUH TEGANGAN TABUNG SINAR-X (kV) TERHADAP KUALITAS CITRA RADIOGRAFI FOTO TORAKS PASIEN COVID-19 Normawati, Sitti; Jumardin, Jumardin; Harmiati, Supri
Media Ilmiah Kesehatan Indonesia Vol. 2 No. 3 (2024): SEPTEMBER
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/miki.v2i3.366

Abstract

Studi perbandingan kualitas gambar rontgen dada pada pasien infeksi Covid-19 dilakukan dengan menggunakan pesawat rontgen Digital Radiografi (DR). Akuisisi gambar dilakukan dalam sembilan eksposur dari tegangan rendah (kV) hingga tegangan tinggi (kV). Pemrosesan gambar dilakukan dengan menggunakan aplikasi software Image-J. Hasil radiografi yang diperoleh dianalisis menggunakan metode FFT (Fast Fourier Transform) dan analisis histogram. Dalam analisis FFT, citra sinar-X cenderung berbeda seiring perubahan tegangan tabung dari 45 kV hingga 57 kV. Dalam analisis histogram, citra sinar-X tergolong citra tidak lengkap karena sebaran piksel dalam rentang skala abu-abu belum sempurna untuk semua perubahan paparan radiasi sinar-X. Citra yang dihasilkan biasanya berbeda sehingga citranya tetap tidak sama pada saat menggunakan tegangan rendah (kV) maupun tegangan tinggi (kV). Puncak histogram menunjukkan intensitas piksel yang menonjol dan lebar puncak menunjukkan rentang kontras citra radiografi. Jika grafik histogram dominan menempati area minimum, maka citra merupakan gambar gelap, tetapi jika grafik histogram dominan menempati area maksimum, maka citra tersebut merupakan gambar terang.
The Effect of Time and Dose from Gamma Irradiation (Cesium-137) on Protein Levels and Meat Color Index of Cork Fish (Channa Striata) Janna, Miftahul; Fuadi, Nurul; Jumardin, Jumardin; Sahara, Sahara; Isradianti, Dwi Febri; Hidayat, Serli Hatul
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 22, No 1 (2024): December 2024
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v22i1.25387

Abstract

The study aimed to determine the effect of time and dose of gamma-ray irradiation on protein levels and storability based on the red color index of cork fish (channa striata). The results showed that the longer the irradiation time and the larger the dose given, the higher the protein level and absorbance value produced. The method used was UV-Vis spectrophotometry to determine protein levels and Image-J software to see the shelf life based on the red colour index. The sample consisted of control, irradiated with irradiation time of 35 minutes (6 mGy), 40 minutes (7 mGy) and 45 minutes (8 mGy) and an irradiation distance of 150 cm. The protein levels at control time, which were recorded at 35, 40, and 45 minutes, were 0.138%, 0.187%, 0.276%, and 0.347%, respectively. These results suggest that there may be a correlation between time and protein levels. Further analysis may be needed to fully understand the implications of these findings. The percentage close to stable on the first day with percentages of 1.54%, 1.66%, 1.76%, 2.50%. Additionally, it seems that a higher dose of irradiation may also result in a higher protein content and absorbance value.Keywords: Cesium-137, Cork Fish, Irradiation, Protein, UV-Vis Spectrophotometer 
Analisis kadar protein udang vaname (Litopenaeus vannamei) oleh pengaruh iradiasi gamma (Cesium-137) Mahyuddin, Rahmawati; Fuadi, Nurul; Jumardin, Jumardin; Zelviani, Sri; Isradianti, Dwi Febri; Hidayat, Serli Hatul
Teknosains Vol 18 No 2 (2024): Mei-Agustus
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v18i2.45440

Abstract

Vannamei shrimp (Litopenaeus vannamei) is a fishery product that is prone to spoilage due to microbes during storage, hence finding solutions to extend its shelf life is necessary. One effective technique to inhibit microbial growth is non-thermal preservation using gamma irradiation. However, the irradiation dose must be carefully considered to avoid reducing the protein content in the shrimp. This study aims to determine the effect of gamma irradiation dose (Cesium-137) on the protein content of vannamei shrimp. The research method used Cesium-137 irradiation with varying doses of 0 mGy (control), 10 mGy (0.4 hours), 30 mGy (0.9 hours), and 50 mGy (1.3 hours). Sample irradiation was performed at a constant distance of 100 cm. Protein content was determined using Uv-Vis spectrophotometry, referencing standard curves and Bovine Serum Albumin (BSA) solution concentrations. The results showed protein contents of 0.146%, 0.180%, 0.268%, and 0.316%, respectively. These results indicate that protein content has a significant relationship with the radiation dose and irradiation time of Cesium-137. This study suggests that gamma irradiation can be used to extend the shelf life of vannamei shrimp without significantly reducing protein content.
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