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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Perilaku dan Promosi Kesehatan: Indonesian Journal of Health Promotion and Behavior
B, Ismail A
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Astronomy Energy Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences

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Efektivitas Audio-Visual Dangers of Smoking dalam Meningkatkan Pengetahuan, Efikasi Diri dan Sikap Remaja di SMP Negeri 32 Kota Samarinda Feriyanti, Alma; B, Ismail A; Ifroh, Riza Hayati
Perilaku dan Promosi Kesehatan : Indonesian Journal of Health Promotion and Behavior Vol. 2, No. 2
Publisher : UI Scholars Hub

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Abstract

Background. Indonesian Basic Health Research (2018) shown that the prevalence smoker aged ≥10 years old it was 28.8% and smoker between 10-18 years old increased from 7.2% to 9.1%. Objective. The objective of this study is to analyze the effectiveness of lecture videos with teaching aids the dangers of smoking to increase knowledge, self-efficacy and negative attitude towards smoking to adolescent. Method. This study used pre-experimental research with one group pre-test-post-test design. Statistical result of knowledge by Wilcoxon signed-rank test and Statistical result of self-efficacy and attitude by paired t-test. Result. Knowledge variables shown that p-value (0.000) < 0.05. There was a difference in the result of adolescent knowledge before and after intervention lecture videos on the dangers of smoking. Self-efficacy and attitude variable showed that p-value (0,023) and (0,019) < 0,05. There was a difference between the result of adolescent self-efficacy and attitude before and after intervention lecture videos the dangers of smoking. Conclusion. Lecture videos with teaching aid "dangers of smoking" are effective in improving student knowledge, self-efficacy, and attitude towards the dangers of smoking.
Phase Composition and Magnetic Behaviour of Iron Sand from Syiah Kuala Beach Prepared by Mechanical Alloying Jalil, Zulkarnain; Sari, Eva Novita; B, Ismail A; Handoko, Erfan
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1180

Abstract

It has recently been investigated that ball milling can improve the magnetic properties of natural iron sand significantly. In this work, we present the phase composition and magnetic behavior of iron sand from Syiah Kuala Beach, Banda Aceh. Samples were prepared by mechanical alloying method using a Fritsch planetary ball mill for 20 hours. As the results, it was shown by XRD testthat Fe3O4 (magnetite) appears as the majority phase and the magnetic properties observation shown that the magnetization saturation (Ms) and remanent (Br) was decreased with the increasing of the coercivity (Hc).
Co-Authors Alma Feriyanti Erfan Handoko Ifroh, Riza Hayati Sari, Eva Novita Zulkarnain Jalil