Williem, Williem
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ROLE OF HYDROGEN PEROXIDE (H2O2) IN YOGHURT (Lactobacillus bulgaricus and Streptococcus thermophilus) IN INHIBITING THE GROWTH OF Staphylococcus epidermidis CAUSES OF ACNE VULGARIS Peramiarti, Idsap; Setiawati, Setiawati; Williem, Williem
Medical and Health Journal Vol 3 No 2 (2024): February
Publisher : Fakultas Kedokteran Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mhj.2024.3.2.11179

Abstract

Acne vulgaris (AV) is an inflammation of the pilosebaceous follicles caused by the bacterium Staphylococcus epidermidis (S. epidermidis). Yoghurt is the result of fermented milk with a mixture of Lactobacillus bulgaricus and Streptococcus thermophilus as Lactic Acid Bacteria (BAL) which produce several compounds like lactic acid, bacteriocin, hydrogen peroxide, and carbon dioxide. Hydrogen peroxide is effective in reducing inflammatory and non-inflammatory lesions in AV patients. This study aims to determine whether hydrogen peroxide produced by lactic acid bacteria in yoghurt affects inhibiting the growth of S. epidermidis. This research is an experimental study with the post-test only method with control group design which was conducted in vitro. Analysis of H2O2 levels in yoghurt using permanganometric titration. Bacterial growth inhibition test using macro delusion and colony counter. The samples used were 30 samples with two repetitions and divided into 10 concentration groups (0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%) with 0 % as negative control. Differences in treatment group barriers were analyzed using the One Way ANOVA test. One Way Anova test showed p < 0.001 which indicated a significant difference between each concentration group. The results of the Post-Hoc LSD test were p<0.05 between the control group and all treatment groups. H2O2 in yoghurt has antibacterial activity against S. epidermidis. This study showed that there was an inhibition of the growth of S. epidermidis by yoghurt at concentration of 5% had a hydrogen peroxide content of 0.17 mg/mL and pH of 5.7 was the minimum inhibitory concentration of S. epidermidis growth.
Effects of AI Image Generator Application on Student Cognitive Load in Design Studies Wardono, Prabu; Aulia, Afina Nisa; Fahmi, Hasanul; Williem, Williem; Hastuti, Rani Puji
IT for Society Vol 9, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/itfs.v9i2.5741

Abstract

AI image generator applications have been widely developed for various purposes in the process of creating fine arts and designs. One of them, OpenArt, provides a facility to develop sketch images into realistic images. This study aims to examine the effect of using this facility on students' mental burden in presenting ideas into realistic chair designs. Fourteen interior design students were involved in this study. The experimental method was used, where they were asked to work on the design of a lounge chair through the stages of sketching manually and with OpenArt. From the two steps of work before and after using this AI application, students were asked to fill out a questionnaire regarding the mental burden they felt. With descriptive data analysis, the experiment showed that OpenArt had a positive effect in helping to reduce students' mental burden in translating ideas into realistic images of chair designs. From these results, it can be concluded that this AI application is considered useful for the design learning process, especially in helping students substantially realize their original ideas without having to be burdened by the mind to work on technical visualization matters alone.
Plant Monitoring System using Raspberry Pi Williem, Williem
IT for Society Vol 10, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/itfs.v10i1.6222

Abstract

Integration of Interior Design and IoT for Adaptive Lamp Ambience: An ESP32-Based Approach Williem, Williem; N, Ahmad Fadhil; Suradhuhita, Pratiwi Purnama; Shevamilano, Diego R
IT for Society Vol 10, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/itfs.v10i1.6358

Abstract