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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
GAMBARAN KETERLAMBATAN OPERASI ELEKTIF PERTAMA DI RUANG INSTALASI BEDAH SENTRAL RUMAH SAKIT UNIVERSITAS HASANUDDIN MAKASSAR Supriadi Nurdin; Firman Firman; Jumardin Jumardin
Media Ilmiah Kesehatan Indonesia Vol. 1 No. 2 (2023): SEPTEMBER
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/miki.v1i2.117

Abstract

Pelayanan kamar operasi sebuah rumah sakit merupakan bentuk pelayanan yang sangat memengaruhi penampilan luar dan menjadi indikator penilaian pelayanan rumah sakit. Fasilitas ruang operasi yang ada di Rumah Sakit XYZ terdiri dari 4 (empat) ruang operasi untuk bedah cito dan elektif. Penelitian ini bertujuan untuk mengkarakterisasi data keterlambatan inisiasi operasi elektif di ruang operasi Rumah Sakit XYZ, sehingga menjadi kontribusi yang signifikan bagi manajemen rumah sakit. Penelitian ini merupakan jenis penelitian sekunder atau desk study dengan menggunakan data sekunder yang dilakukan di ruang operasi Instalasi Bedah Pusat Rumah Sakit XYZ yang berjumlah 73 orang. Penelitian ini dilakukan pada bulan Februari hingga Maret 2023. Data yang ada diringkas dan disusun untuk meningkatkan efisiensi pencarian secara keseluruhan kemudian di analisis secara deskriptif dan disajikan dalam bentuk tabel. Hasil penelitian menunjukkan bahwa ditemukan keterlambatan operasi elektif pertama di Rumah Sakit XYZ bulan Januari yaitu 30 menit dari waktu yang dijadwalkan sebanyak 28 operasi (38.36%) dan yang mengalami keterlambatan lebih dari 30 menit adalah 23 operasi (31.51%). Manajemen waktu serta evaluasi semua sektor yang berperan menjadi hal yang perlu untuk dilakukan demi meningkatkan pelayanan kesehatan kamar operasi.
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
GAMBARAN PENERIMAAN VAKSIN COVID-19 PADA ANAK DI KOTA MAKASSAR Firman Firman; Fitriana Fitriana; Jumardin Jumardin
Media Ilmiah Kesehatan Indonesia Vol. 2 No. 2 (2024): MAY
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/miki.v2i2.298

Abstract

Vaksinasi COVID-19 merupakan salah satu kegiatan yang dilakukan untuk melindungi tubuh  dengan menciptakan respons antibodi (sistem kekebalan) dengan tujuan meminimalkan penularan virus. Penelitian ini bertujuan untuk mengetahui faktor yang berhubungan dengan penerimaan orang tua murid terhadap vaksin COVID-19 pada anak Sekolah Dasar usia (6-11 tahun). Penelitian ini menggunakan pendekatan deskriptif non eksperimental. Populasi dalam penelitian adalah seluruh orang tua murid yang memiliki anak usia sekolah (6-11 tahun) di Kota Makassar yang dikategorikan layak mendapatkan vaksinasi, yaitu sekitar 264.000 orang dan besar sampel sebanyak 1.073 orang tua murid. Teknik pengambilan sampel yang digunakan, yaitu snowball sampling. Hasil penelitian menunjukkan bahwa sebagian besar orang tua menerima vaksin anak 83,8% dibandingkan dengan yang menolak 12,6%. Ada lima alasan mengapa responden menerima vaksin. Alasan yang paling banyak, yaitu “Keinginan sendiri Karena sadar akan manfaat vaksin anak” sebesar (75,1%) atau sebanyak 675 orang, sedangkan alasan yang paling sedikit, yaitu “ikut-ikutan dengan orang tua murid yang lain” sebesar (0,1%) atau sebanyak satu orang dan terdapat enam alasan mengapa responden menolak vaksin. Alasan yang paling banyak, yaitu “Takut terhadap efek samping vaksin” sebesar (8%) atau sebanyak 86 orang, sedangkan alasan yang paling sedikit, yaitu “Karena dari lahir anak saya tidak pernah di vaksin” sebesar (0,3%) atau sebanyak 3 orang. Disarankan kepada seluruh pihak terkait agar saling bersinergi dalam melakukan sosialisasi terkait pentingnya vaksin COVID-19 pada anak sebagai salah satu upaya dalam mencegah dan menanggulangi penyebaran virus COVID-19.
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.
Co-Authors Abdul Munim Abdul Munim Thariq Akhiruddin Maddu Andi Syam Rizal Arif Wijaya Bariah, Khaerul Dwi Febri Isradianti Dwi Febri Isradiati Ferdianti, Andi Tasya Firman firman Fitriana Fitriana Fitriyanti Fitriyanti Harmiati, Supri Hidayat, Serli Hatul 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 Nurhafida Turayni Nurul Fuadi Rahmaniah Nalwi Rahmaniah Nalwi Safitri, Aan Sahara Sahara Sitti Sitti Nurrahmi Suci Khusnul Amelia Supriadi Nurdin Umar, Eka Putriani Wahyullah Wahyullah Zelviani, Sri