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All Journal Jurnal Multidisiplin Sahombu International Journal of Health, Engineering and Technology JURNAL MULTIDISIPLIN ILMU AKADEMIK
Eva Sasmita
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Dentistry Economics, Econometrics & Finance Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary

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LAYANAN DALAM BIMBINGAN DAN KONSELING BAGI PESERTA DIDIK DI SEKOLAH Eva Sasmita; Miftah Rahmadini; Fakhrur Razi; Hidayani Syam
JURNAL MULTIDISIPLIN ILMU AKADEMIK Vol. 2 No. 1 (2025): Februari
Publisher : CV. KAMPUS AKADEMIK PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jmia.v2i1.3135

Abstract

Guidance and counseling are very important in education to help students find solutions to the problems they face and develop their potential. This service also aims to shape students' character and encourage independence. Implementation of these services should focus on individual needs and problems for maximum effectiveness. This research uses a literature study method to explain guidance and counseling services in schools, which have the mission of supporting each individual to achieve maximum potential according to their personal needs and uniqueness. Factors such as talent, family, education, economy and environment are also considered so that individual development is positive.
Characterization of Corona Plasma Ozone Generators and Analysis of Microbubble Ozone Size for Efficient Mass Transfer Fitryan, Anggyta; Junaidi, Junaidi; Arif Surtono; Eko Yulianto; Eva Sasmita; Muhammad Nur; Ayu Aprilia; Nida Lidya Susanti; Abdurrahman, Ahmad Faruq
Jurnal Multidisiplin Sahombu Vol. 5 No. 06 (2025): Jurnal Multidisiplin Sahombu, September - October (2025)
Publisher : Sean Institute

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Abstract

This study aims to characterize the performance of a corona plasma ozone generator, measure the concentration of ozone produced, and analyze and compare the size of ozone microbubbles from two diffusers (C50 and C80) to evaluate the efficiency of ozone mass transfer. The method used was experimental with equipment including a VOSOCO ozone generator, Ozone Monitor, dimmer, high voltage probe, Kyoritsu ampere clamp, SANWA multimeter, flowmeter, aquarium, Apexel 12.5x macro lens, C50 and C80 diffusers, and an iPhone 11, with Python-based microbubble size analysis software for digital image processing. The results showed that the ozone generator operated at 1200 V with a linear relationship between voltage, current, and power, where the highest ozone concentration was achieved at a flow rate of 0.8 l/min. The C80 diffuser produced smaller and more homogeneous bubbles (average 3.37 µm) compared to the C50 (4.09 µm), increasing the specific surface area by 21.4% for better mass transfer efficiency. The innovation of this research lies in the development of a Python-based analysis system with an effective and affordable digital image processing approach to characterize ozone microbubble size, providing an accurate alternative for analyzing critical parameters for optimizing microbubble-based ozonation systems.
Cryptgrapy Algorithm Variably Modified Permutation Compotition (VMPC) on Image Security Eva Sasmita; Yani Maulita; Juliana Naftali Sitompul
International Journal of Health Engineering and Technology Vol. 1 No. 2 (2022): IJHE-JULY 2022
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (715.78 KB) | DOI: 10.55227/ijhet.v1i2.21

Abstract

The development of technology as it is today allows everyone to exchange information without any limitations of time and distance. The possibility that there will be a data leak during the information exchange process is carried out. Therefore, in sending data, especially images, aspects of security, confidentiality and efficiency of data storage are very necessary. If this important information falls into the wrong hands, it will cause unwanted things, for example image manipulation in a negative form and can harm the owner of the image. One of the methods used to maintain the security of the data is cryptography using one of the techniques, namely Vmpc. The strength of this algorithm lies in the difficulty of calculating discrete algorithms on prime integers in which multiplication operations are performed. In this study, the author encodes the image encryption with the Vmpc Algorithm to decrypt the key from Vmpc. System implementation using Visual Basic Net 2010 programming language.The results of the implementation with the initial encrypted image having a time of 4282.85 Milliseconds with randomized image results while the encrypted image will be re-decrypted which has a time of 20442.84 Milliseconds with the image results returning to the beginning.
Co-Authors Abdurrahman, Ahmad Faruq Ayu Aprilia EKO YULIANTO fakhrur razi Fitryan, Anggyta Hidayani Syam Junaidi Junaidi Miftah Rahmadini Muhammad Nur Nida Lidya Susanti Surtono, Arif Yani Maulita