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All Journal JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat Media Ilmiah Kesehatan Indonesia
Jumardin Jumardin
Universitas Islam Negeri Alauddin Makassar
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The Synthesis and Characterization of Structural Properties of Hydroxyapatite from Cuttlefish Shell Using X-Ray Diffraction Method Sitti; Jumardin Jumardin; Nurul Fuadi
JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Vol 12 No 2 (2024)
Publisher : Pendidikan Fisika UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jpf.v12i2.50635

Abstract

The preparation of solid hydroxyapatite (HAp) with variations in calcination temperature has been carried out. This study aims to determine the crystal size, dislocation density and crystallinity levels of HAp using XRD. HAp is made by mixing cuttlefish shell powder with a solution of KH2PO4, NaOH and Aquades then drying it for 24 hours. Extraction of CaCO3 from cuttlefish shells using the calcination method at various temperature variations, namely 600 0C, 800 0C and 1,000 0C. XRD test to determine the crystal size value, crystal defects and crystallinity of HAp material. XRD data shows that HAp solids form crystals with smaller sizes (50.97 nm, 48.64 nm and 36.52 nm) when the calcination temperature increases, dislocation density increase (0.38 nm-2.10-4, 0.42 nm-2.10-4 and 0.74 nm-2.10-4) as the calcination temperature increases and the crystallinity value decreases (46.31%, 39.06% and 37.93%) based on changes in calcination temperature.
Analysis of Sun Protection Factor (SPF) values of Shallot Leaf Extract using UV-Vis Spectroscopy Method Hajra Hajra; Jumardin Jumardin; Ihsan Ihsan
Media Ilmiah Kesehatan Indonesia Vol. 4 No. 1 (2026): JANUARY
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/miki.v4i1.823

Abstract

A study has been conducted on measuring the sun protection potential of red onion leaf extract with the percentage of pigmentation transmission (%Tp), erythema transmission (%Te), and Sun Protection Factor (SPF) using the UV-Vis Spectrophotometry method. The purpose of this study was to classify the sun protection potential categories of shallot leaf extract. The sunscreen ability test was determined by the calculation method of erythema transmission, pigmentation transmission, and SPF in the wavelength range of 290-320 nm with a distance of 5 nm. From the test, the concentrations of 400 ppm, 600 ppm, 800 ppm, and 1000 ppm were obtained which were included in the Extra Protection category for pigmentation based on the values ​​(%Tp) which were 63.70%, 60.15%, 46.15%, and 47.45%, respectively, all of which were in the Extra Protection category (42 – 86%). The erythema values ​​for each were 63.57%, 59.14%, 45.96%, and 47.31%, respectively. The SPF values ​​were categorized as Minimal Protection with values ​​at concentrations of 400 ppm (1.903), 600 ppm (2.219), 800 ppm (3.284), and 1000 ppm (3.161). The UV protection effectiveness of shallot leaf extract was highly sensitive to pH changes and reached optimum conditions at a pH close to neutral, around 7.07.
Pengaruh Variasi FFD pada Anoda Heel Effect Terhadap Kualitas Citra Radiografi Melalui Parameter Pixel Value Sitti Normawati; Syahrir Syahrir; Nur Fitri Qalbina Syahdan; Jumardin Jumardin
Media Ilmiah Kesehatan Indonesia Vol. 4 No. 2 (2026): MAY
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/miki.v4i2.978

Abstract

This study aimed to analyze the effect of variations in focus-to-film distance (FFD) on the anode heel effect and radiographic image quality, based on the Pixel Value (PV) parameter. A quantitative experimental approach was employed. The testing was conducted using a phantom articulatio genu with FFD variations of 90 cm, 100 cm, and 120 cm, and object positions varied between the cathode and anode sides. The results indicated that the anode heel effect was more effectively utilized at shorter FFD when the thick side of the object was positioned on the cathode side. The highest PV value was obtained under this condition, whereas a decrease of approximately 11% was observed when the thick side was positioned on the anode side. Furthermore, an FFD of 100 cm produced lower PV standard deviation (PVSD) values, resulting in more homogeneous images with minimal noise. These findings demonstrate that variations in FFD and object positioning influence the distribution of X-ray intensity and radiographic image quality. Appropriate selection of FFD and placement of the thick side of the object on the cathode side can produce more uniform radiographs in terms of sharpness, brightness, and density.
Penentuan Titik Bor Air Tanah Menggunakan Metode Geolistrik Tahanan Jenis Sebagai Solusi Krisis Air Di Kaki Gunung Latimojong Kabupaten Enrekang Andi Syam Rizal; Jumardin Jumardin
Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada masyarakat Vol. 8 No. 1 (2025): Jurnal Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Pusat Pengabdian kepada Masyarakat LP2M UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jak.v8i1.46145

Abstract

Abstrak Fokus kegiatan ini adalah untuk membantu masyarakat mengetahui potensi air tanah dan menentukan titik bor air tanah menggunakan metode geolistrik tahanan jenis sebagai solusi krisis air di Kaki Gunung Latimojong Kabupaten Enrekang. Lokasi kegiatan dilakukan di Kaki Gunung Latimojong Kabupaten Enrekang dengan jumlah lintasan pengukuran sebanyak 3 konfigurasi schlumberger. Pengumpulan data melibatkan pemerintah dan warga setempat. Data yang dibutuhkan pada kegiatan ini ada 2 yaitu data geologi dan data geofisika.  Data geologi diperoleh dari hasil pengamatan struktur batuan di atas permukaan dan data kedalaman sumur warga di sekitar lokasi kegiatan. Sedangkan data geofisika, diperoleh menggunakan alat resistivitimeter. Analisis data yang dilakukan yaitu menggunakan Software Microsoft Excel, Notepad, QGis, IPI2WIN, dan Res2DInv untuk mendapatkan model bawah permukaan. Model ini diinterpretasi menggunakan tabel resistivitas batuan untuk memetakan air tanah di Kaki Gunung Latimojong Kabupaten Enrekang. Setelah dilakukan interpretasi maka dilakukan penentuan titik bor air tanah. Lapisan air tanah ditemukan pada 2 titik pengukuran dengan kondisi yang tipis. Hal ini disebabkan oleh formasi batuan di Kaki Gunung Latimojong didominasi batuan beku yang berasal dari formasi latimojong. Titik pengeboran air tanah pada Kaki Gunung Latimojong terdapat pada koordinat 03°25’00.00” S dan 119°59’24.53” E ketinggian 1479 mdpl serta pada 03°25’09.94” S dan 119°59’18.74” E ketinggian 1463 mdpl. Kata Kunci: Air Tanah, Metode Geolistrik, Kaki Gunung Latimojong    Abstract The focus of this activity is to help the community find out the potential of groundwater and determine groundwater drilling points using the geoelectric resistivity method as a solution to the water crisis at the foot of Mount Latimojong, Enrekang Regency. The location of the activity is at the foot of Mount Latimojong, Enrekang Regency with a total of 3 Schlumberger configurations. Data collection involves the government and local residents. There are 2 data needed for this activity, namely geological data and geophysical data.  Geological data was obtained from observations of rock structures above the surface and data on the depth of residents' wells around the activity location. Meanwhile, geophysical data was obtained using a resistivity meter. Data analysis was carried out using Microsoft Excel, Notepad, QGis, and IPI2WIN software to obtain a subsurface model. This model is interpreted using rock resistivity tables to map groundwater at the foot of Mount Latimojong, Enrekang Regency. After the interpretation is carried out, the groundwater drilling point is determined. The groundwater layer was found at 2 measurement points in a thin condition. This is because the rock formations at the foot of Mount Latimojong are dominated by igneous rocks originating from the Latimojong formation. The groundwater drilling point at the foot of Mount Latimojong is located at coordinates 03°25’00.00” S and 119°59’24.53” E at an altitude of 1479 mdpl and at 03°25’09.94” S and 119°59’18.74” E at an altitude of 1463 mdpl Keywords: Groundwater, Geoelectrical Method, Foot of Latimojong Mount
Co-Authors Andi Syam Rizal Hajra Hajra Ihsan Ihsan Nur Fitri Qalbina Syahdan Nurul Fuadi Sitti Syahrir Syahrir