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Briliant: Jurnal Riset dan Konseptual
Published by Universitas Nahdlatul Ulama Blitar
ISSN : 25414216     EISSN : 25414224     DOI : http://dx.doi.org/10.28926/briliant.v7i2.973
Core Subject : Science, Education, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Education
BRILIANT : Jurnal Riset dan Konseptual published by Universitas Nahdlatul Ulama Blitar. Published four times a year in print and online. Journals are published every three months, in February, May, August and November. The article topics contained in this journal are the results of research and thinking about the development of education and learning, Science and Technology.
Arjuna Subject : -
Articles 792 Documents
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Pengaruh Attitude Toward Behavior dan Change Mechanisms terhadap Pengambilan Keputusan Vasektomi pada Suami Choiriyah, Lilik; Yunitasari, Esti; Krisnana, Ilya; Nurmalaningsih, Ucik
BRILIANT: Jurnal Riset dan Konseptual Vol 11 No 1 (2026): Volume 11 Nomor 1, Februari 2026
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v11i1.2212

Abstract

Decision making on contraceptive use is actually not only the responsibility of women, but also a shared responsibility with their husbands. It is important to understand the factors that influence husbands' decisions in using contraceptives, one of which is attitude towards behavior. The mechanism of attitude change is also very important to understand, because it can affect changes in husbands' contraceptive decision making. This study aims to identify how attitudes towards contraception affect the husband's decision-making process, as well as the role of attitude change mechanisms in shaping their involvement in family planning choices. This study is a quantitative study with a cross-sectional approach. The sampling technique was carried out randomly with multistage random sampling. The sample in this study was calculated based on the Yamahen formula so that 110 respondents were obtained. The results of this study indicate that husbands' attitudes towards contraception significantly influence their decision-making process regarding contraceptive use. Positive attitudes towards contraception are associated with greater involvement in decision making and a higher likelihood of using contraception. Attitude change mechanisms, such as information from health care providers and discussions with partners, play an important role in changing husbands' perspectives, which ultimately lead to more supportive decisions regarding family planning. These findings highlight the importance of targeting attitude change in interventions aimed at increasing community participation in conservation decision-making.
STUDI KINETIKA REAKSI EKSTRAKSI DOLOMIT DENGAN ASAM FOSFAT Fahturrozak, Ahmad; Adzani, Mayla Fayzza; Sumada, Ketut
BRILIANT: Jurnal Riset dan Konseptual Vol 11 No 1 (2026): Volume 11 Nomor 1, Februari 2026
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v11i1.2218

Abstract

Dolomite (CaMg(CO₃)₂) is generally white but can also appear gray or bluish, with magnesium (Mg) and calcium (Ca) as its main composition.. This study analyzes the kinetics and conversion of dolomite extraction using phosphoric acid through a solid-liquid extraction method. Initially, dolomite was calcined at 850°C for 240 minutes and then sieved. A total of 40 grams of the sieved sample was extracted with 250 mL of 2M phosphoric acid at varying temperatures (30, 45, 60, 75, and 90°C) and extraction times (60, 90, 120, 150, and 180 minutes). The extracted solution was filtered and analyzed using AAS to determine the extracted calcium and magnesium content. The highest conversion was achieved at 90°C for 180 minutes, with calcium extraction at 65.67% and magnesium at 65.98%, with the ash layer as the controlling step. The activation energy, based on the Arrhenius equation, was 27,745.49 J/mol·K for calcium and 19,120.5 J/mol·K for magnesium, with reaction rate constants of K=9.8149 e^(3336.6/T) for calcium and K=1.8063 e^(2299.8/T) for magnesium. This study demonstrates that temperature and reaction time significantly influence dolomite extraction, which follows the Arrhenius model, providing valuable insights into the kinetics and efficiency of dolomite extraction using phosphoric acid.

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