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All Journal Teknosains: Media Informasi Sains dan Teknologi JURNAL PENDIDIKAN MIPA Jurnal Fisika dan Terapannya
Jasdar Agus
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Mathematics Physics Social Sciences Other

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PENGARUH VARIASI SUHU TERHADAP LAJU KOROSI PADA BAJA ST 37 DENGAN MENGGUNAKAN INHIBITOR KULIT JAGUNG Ratih Ratih; Rahmaniah Rahmaniah; Jasdar Agus
Teknosains Vol 17 No 1 (2023): Januari-April
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v17i1.32121

Abstract

Research has been carried out which aims to determine the efficiency of corn husk extract in inhibiting the corrosion rate of St37 steel by using the mass loss method, to determine the effect of immersion temperature variations in inhibiting the corrosion rate of ST37 steel and to determine the effect of variations in inhibitor concentration in inhibiting the corrosion rate of steel. ST37. the method used in this study is the method of mass loss (Mass Loss). As for the results of the research that has been done, corn husks can inhibit the corrosion rate which is used as an inhibitor on ST37 steel by using 3% HCl medium with temperature variations of 40oC, 50oC and 60oC. The results of the corrosion rate without inhibitors obtained 40oC of 32.98 mpy, 50oC of 62.09 mpy, 60oC of 71.51 mpy. And the results of the corrosion rate using a fixed inhibitor concentration of 400 ppm obtained 40oC of 32.81 mpy, 50oC of 36.59 mpy, 60oC of 38.76 mpy.
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.
Analisis Kemampuan Mahasiswa Menyusun Materi Kuliah Menggunakan Peta Konsep Zuhrah Adminira Ruslan; Jasdar Agus
JURNAL PENDIDIKAN MIPA Vol 14 No 3 (2024): JURNAL PENDIDIKAN MIPA
Publisher : Pusat Publikasi Ilmiah, STKIP Taman Siswa Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37630/jpm.v14i3.1810

Abstract

Pembelajaran dasar-dasar pendidikan MIPA memerlukan pemahaman yang mendalam sehingga kemampuan membuat peta konsep sangat penting. Peta konsep efektif dalam mengorganisir pengetahuan, membantu mahasiswa mengingat dan menerapkan informasi yang dipelajari. Penelitian ini bertujuan untuk menganalisis kemampuan mahasiswa dalam membuat peta konsep berdasarkan jenis dan kriteria yang telah ditentukan. Metode penelitian analisis kualitatif digunakan untuk melibatkan proses menginterpretasi data dari peta konsep yang dibuat oleh mahasiswa. Teknik analisis data bersumber dari tugas yang diberikan kepada mahasiswa berupa menyusun peta konsep dengan berbagai jenis sesuai topik dalam mata kuliah dasar-dasar pendidikan MIPA. Terdapat 26 sampel mahasiswa yang menyusun peta konsep sesuai tema yang diberikan. Berdasarkan penelitian, jenis peta konsep yang paling sering digunakan adalah pohon jaringan (46%) sebab dapat mengorganisasikan dan memvisualisasikan informasi secara efektif, diikuti oleh peta laba-laba (35%) dan rantai kejadian (19%). Mahasiswa menunjukkan kemampuan yang baik dalam menyusun peta konsep, terutama dalam kriteria hierarki (69% sahih), proposisi (81% sahih), dan keterkaitan antar silang (65% sahih). Penelitian menunjukkan bahwa mayoritas mahasiswa dapat menyusun proposisi konsep dan hierarki secara sahih, serta menghubungkan berbagai konsep dengan baik. Namun, hanya sedikit mahasiswa yang mencantumkan contoh dalam peta konsep yakni 1%.
Co-Authors Dwi Febri Isradianti Jumardin, Jumardin Khaerul Bariah M. Ichzan Nur Isnaeni RAHMANIAH RAHMANIAH Ratih Ratih Sitti Nurrahmi Suci Khusnul Amelia Zuhrah Adminira Ruslan