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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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Journal : Jurnal Fisika dan Terapannya

 1   2 
STUDI ANALISIS KOEFISIEN ABSORBSI PAPAN AKUSTIK PADA KETEBALAN BERVARIASI BERBAHAN DASAR LIMBAH KULIT JAGUNG DAN SABUT KELAPA (SOLUSI ALTERNATIF RAMAH LINGKUNGAN) Said L, Muh.; Nurmin, Nurmin; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 7 No 1 (2020): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i1.13484

Abstract

This study aims to detemine the effect of thickness on the absorption coefficient of acoustic boards from corn waste and coconut fiber with polyester resin adhesive. The procedure used is used in the research carried out by making acoustic boards with two types of samples, which are fine chopped materials and materials that have been roughly cut with a thickness of 0.7 cm, 1.0 cm and 1.5 cm and measure the coefficient absorption of the thickness of the acoustic material board. The frequency value used is 200 Hz, 250 Hz, 500Hz, 1000 Hz, 2000 Hz and also 4000 Hz. Based on the results of research conducted, it is found that the absorption coefficient value of straight-line coefficient, where the thicker a material, the smaller the coefficient of absorption. Sound absorption coefficient is good, namely at all thicknesses with a frequency of 200 Hz, 250 Hz and 500 Hz both from fine counts and rough counts. This shows that acoustic boards made of corn husk and coconut fiber can be used as sound absorbers because they have been included in the requirements of the ISO 11654 standard. 
PENGUKURAN LAJU DOSIS PAPARAN RADIASI HAMBUR PADA RUANG COMPUTER TOMOGRAPHY (CT) SCAN DI RUMAH SAKIT BHAYANGKARA MAKASSAR Astuti, Astuti; Sahara, Sahara; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 5 No 2 (2018): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v5i2.16110

Abstract

This research aims to determine the effect of exposure to radiation dose on the distance from the radiation source, determine radiation dose exposure with variations in exposure factors (voltage), and to determine the radiation exposure received by workers / operators in the CT-Scan room at Bhayangkara Hospital Makassar and using a sensitive Surveymeter with variations in the exposure factor (voltage) of 100 kV, 120 kV, and 135 kV and a variation of the distance from the radiation source of 0 m, 1 m, 2 m. The results showed that the highest dose was on the front side with a voltage of 135 kV at a distance of 0 m, namely 1.5 nSv / h. While the lowest dose is on the left side with a voltage of 100 kV at a distance of 2 m, namely 0.6 nSv / h. Radiation exposure received by workers / operators in the CT-Scan room at Bhayangkara Hospital Makassar at a voltage of 135 kV, a distance of 1 m from the radiation source, namely 1.5 nSv / h. This is in accordance with the provisions of BAPATEN, namely the value of the dose received does not exceed 50 mSv in (one) year.
HUBUNGAN INTENSITAS CAHAYA DAN JARAK PANCARAN SEBAGAI HUKUM KEBALIKAN KUADRAT Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 5 No 1 (2018): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v5i1.15927

Abstract

This research aims to determine the relationship between light intensity and beam distance as the inverse square law. From the experimental results it was found that the relationship between light intensity with the distance of the beam that is the farther the distance of the beam used, the intensity of the light obtained will be smaller, and vice versa. From the results of research conducted, obtained results for an average light intensity of 2.0636 Cd.Keywords: light intensity, beam distance, inverse square law
NILAI TERMOFISIKA DAUN KAPUK, DAUN SIRIH DAN DAUN BUNGA KEMBANG SEPATU SEBAGAI BAHAN KOMPRES DEMAM Sri Zelviani; Riska Riska; Fitriyanti Fitriyanti
JFT : Jurnal Fisika dan Terapannya Vol 7 No 2 (2020): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i2.18064

Abstract

Fever was a condition where the body temperature was above 37,5oC. Fever was also part of the immune process that was fighting infections due to viruses, bacteria and parasites. Fever was considered very high and potentially dangerous if the temperature reaches 39oC. This research used experimental of temperature Cobra3 method. The research showed  thermophysical values of kapok leaves, red betel leaves and hibiscus flower leaves as ingredients for fever compresses. The results of kapok leaves were the average specific heat value of 45.07 (J/groC), and heat capacity value of 901.30 (J/oC). For the sample of red betel leaves, the average specific heat value were 72.50 (J/groC) and heat capacity value 1,540 (J/oC). Sample of hibiscus flower leaves were the average specific heat value 96.30 (J/groC) and the heat capacity value 1,925.3 (J/oC).
PENGARUH TEGANGAN TABUNG (kV) PADA PEMERIKSAAN THORAX TERHADAP KUALITAS CITRA RADIOGRAFI DI BALAI BESAR KESEHATAN PARU MASYARAKAT MAKASSAR Fitriani Fitriani; Sri Zelviani; Sahara Sahara
JFT : Jurnal Fisika dan Terapannya Vol 7 No 2 (2020): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i2.18067

Abstract

This study aims to determine the effect of high voltage usage and standards on the quality of radiographic imagery produced on X-ray aircraft. Data retrieval was obtained by conducting testing in the Radiology Installation room of the Makassar Public Lung Health Center by using an X-ray aircraft of thosiba brand type with drx-1824B model unit. The result obtained is the voltage of the tube gives an influence on the quality of radiography imagery where for the use of standard tube voltage provides good radiographic imagery quality results with a graph reading histogram voltage of 50 kV with a distance of 100 cm and a time of 10 mAs with a black background image starting at the position of 16 to 36 and the position of the object is 37 to 79 which is then able to provide information because the edges of the object and background can still be distinguished clearly and for the high voltage used the result is less tub because it can reduce the contrast value of objects and background is indistinguishable, this is seen in the histogram readings voltage of 90 kV and distance of 100 cm and the time of 10 mAs has a gradation of gray color that dominates compared to the black background whose position starts from 10 to 132 which can not provide information on the edge value between the background and the object phantom water because both seem to be fused so that it is indistinguishable and causes an inadequate image contrast Not good enough.
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.
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