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All Journal Teknosains: Media Informasi Sains dan Teknologi JOURNAL ONLINE OF PHYSICS KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Fisika dan Terapannya Jurnal farmasi UIN Alauddin Makassar
Zelviani, Sri
Universitas Islam Negeri (UIN) Alauddin Makassar
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Health Professions Immunology & microbiology Medicine & Pharmacology Physics Public Health

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PENGARUH INTENSITAS KEBISINGAN TERHADAP TEKANAN DARAH SEBELUM DAN SETELAH BEKERJA DI PERCETAKAN CV. RINJANI PERKASA Citra Wardani; Sri Zelviani; Nurul Fuadi
JFT : Jurnal Fisika dan Terapannya Vol 8 No 1 (2021): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i1.20072

Abstract

This research was attempted to identify the effect of the seriousness of noise on CV Rinjani Perkasa's blood pressure. This study used a procedure to compare blood pressure before and after exposure to sound sources from the press. Fifteen respondents measured blood pressure between the ages of 20-40 years during working hours using a digital blood monitor. The average measured sound seriousness is 107.8 dB in the room where the sound source is made and 99.1 dB in the room directly adjacent to the sound source. Blood pressure measurements showed that blood pressure increased more in 15 respondents. For example, Respondent 4 who is located next to the noise source has a systolic blood pressure of 20.62% and a diastolic blood pressure of 15.96%, whereas Respondent 1 is located next to the noise source. There is a problem, the percentage increase. With blood pressure. Low blood pressure Systolic blood pressure of 7.48% and diastolic blood pressure of 6.08%.
ANALISIS NILAI ABSORBANSI UNTUK MENENTUKAN KADAR FLAVONOID DAUN JARAK MERAH (JATROPHA GOSSYPIFOLIA L.) MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Ahriani Ahriani; Sri Zelviani; Hernawati Hernawati; Fitriyanti Fitriyanti
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.v8i2.23379

Abstract

Research on Absorbance Value Analysis on Determination of Flavonoid Levels in Red Jatropha Leaves (Jatropha Gossypifolia L.) using UV-Vis Spectrophotometer has been conducted. This study aimed to determine the absorbance of red jatropha (Jatropha Gossypifolia L.) leaves on young and old leaves and to determine the flavonoid content of red jatropha (Jatropha Gossypifolia L.) leaves on young and old leaves. The sample used in this study was 200 g of red jatropha leaf powder (Jatropha Gossypifolia L.) with the addition of 2000 ml of 70% ethanol as solvent in a ratio of 1:10. The extraction method used in this study is the MAE (Microwave Assisted Extraction) method to measure the absorbance value of the sample at a wavelength of 436 nm using a UV-Vis spectrophotometer. The results showed that the absorbance value of red jatropha (Jatropha Gossypifolia L.) leaves on young leaves was smaller than on old leaves. Where the absorbance value in young leaves is 0.355 while the absorbance value in old leaves is 0.616. The resulting absorbance value has complied with Lambert-Beer's law (0.2 ≤ A < 0.8). The flavonoid content of red jatropha (Jatropha Gossypifolia L.) leaves in young leaves was lower than in old leaves. Where the levels of flavonoids in young leaves is 2.71% while the levels of flavonoids in old leaves is 4.90%. This shows that the greater the absorbance value, the greater the flavonoid content produced.
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.
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 Abadi, Firdaus Alam Ahriani Ahriani Albar, Ahmad Aminah Aminah Anita Purnamasari Asriani Asriani Ayu, Dya Azyurah, Zilmi Bariah, Khaerul Citra Wardani Desianti, Ika Dwi Febri Isradati Elfrida Ratnawati Elisabeth Supriyatni Fitriani Fitriani FITRIYANTI FITRIYANTI Fitriyanti Fitriyanti Hasan, Hasniati HERNAWATI HERNAWATI Hernawati Hernawati Hidayat, Serli Hatul Ida Ayu Putu Sri Widnyani Ihsan Ihsan Ilham Ilham Imran, Dzulqadri Isradianti, Dwi Febri Jamhari Jamhari jumardin jumardin Lestari, Utari Mahyuddin, Rahmawati Muh. Said L Musriadi, Musriadi Narti Narti, Narti Nur, Fenty Nurlinda Jusli Nurmin Nurmin Nurul Fuadi Nurul Fuadi Nurul Wahidah Putri Mayangsari Rahmaniah, Rahmaniah Rahmayani, Rai Rani, Sefrilita Risqi Adikaning Riska Riska Sahara Sahara Sahara Sahara Sulaiman Yahirah Muhammad Trihendriansyah, Trihendriansyah Wahyuni, Ayusari Yoga Yuniadi