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All Journal International Journal Of Science, Technology & Management (IJSTM) Proceedings Series on Social Sciences & Humanities
Fajar, Muhamad Ibnu
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Design of a Switching Flyback Transformer as High Voltage and Frequency Power Supply for Raw Milk Cold Plasma Sterilization Fajar, Muhamad Ibnu; Elfahra Casanza Amalda; Muhammad Ali Akram Syah; Nurussa’adah
International Journal of Science, Technology & Management Vol. 1 No. 3 (2020): September 2020
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i3.50

Abstract

Plasma is one of the four fundamentals states of matter other than solid, liquid and gas. In terms of temperature, plasma can be classified into Hot Plasma occurs in thermal equilibrium, Thermal Plasma occurs in non-thermal equilibrium, Cold Plasma occurs in non-thermal equilibrium Cold plasma is an ultra-fast method of sterilization that operates under ambient temperatures (ideal for thermolabile products) at a low running cost and is environment-friendly. Therefore, technology is needed to solve the problem through the innovation of a milk sterilization machine with the principle of non-thermal plasma sterilization by utilizing plasma technology to reduce microbial contamination. The output frequency and voltage are determined through software simulation using voltmeter, oscilloscope, and counter timer. After 220VAC supplies a voltage step down and rectifier circuit to produce a 12VDC output voltage to supply the Switching circuit voltage and the Flyback Transformer driver. Rated voltage and frequency reach 20kV 15kHz.The positive wire from the Flyback Transformer is connected to the acrylic box filled with water (positive electrode) and the ground wire is connected to another acrylic sheet (ground electrode. The milk medium to be sterilized can be placed on the positive electrode or between the ground and positive electrodes. Non-thermal plasma has an effective ability to decontaminate bacteria. This is because plasma is composed of a mixture of ionized particles, reactive radical molecules, and also ultraviolet Schematic circuit design has been successfully simulated. Acrylic sterilization media designs can be used to generate plasma. The mechanism of bacterial sterilization in milk is by the activity of inhibiting bacterial biofilms which can lead to bacterial DNA damage through reactive species in the non-thermal plasma used. Milk quality testing is carried out based on comparison of supporting literature with milk quality requirements according to SNI 3950: 2014.
Case Settlement of Protected Forest Destruction Case in Ranca Upas Based on Law Number 41 Year 1999 on Forestry Fajar, Muhamad Ibnu
Proceedings Series on Social Sciences & Humanities Vol. 14 (2023): Proceedings of International Conference on Legal Studies (ICOLAS 2023)
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pssh.v14i.1043

Abstract

In Article 50 paragraph (2) of Law Number 41 of 1999 concerning Forestry, every person who is granted a business license for the utilization of environmental services, a business license for the ultilization of timber and non – timber forest products, and a license to collect timber and non – timber forest products, is prohibited from carrying out activities that cause forest damage. The violation of the article is in the Rancaupas area, Rancabali District, Bandung Regency where the damage to the protected forest is caused by a trail event (Camping Adventure Explore) which damages one of the flora protected by the government in the form of Edelweiss swamp flowers. The purpose of this research is to find the settlement point of the Rancaupas conservation forest damage case and what are the responsibilities of the Rancaupas protected forest damage. The research method used by the author is a normative juridical approach with this method to find a rule of law, legal principles, and legal doctrines to answer the legal doctrines to answer the legal issues at hand. The results of the study are in the form of a solution to the damage in the protected forest of Ranca Upas by securing the event organizers and following up into the realm of law. As well as responsibility for the damage to the protected forest in Ranca Upas by conducting joint rehabilitation, namely the government, Perhutani,the community and also the event organizer.
Co-Authors Elfahra Casanza Amalda Muhammad Ali Akram Syah Nurussa’adah