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ANALYSIS OF BLOOD COCKLE SHELL CONTENT AS A BIOCOMPOSITE MATERIAL ON ULTISOL SOIL Sari Rahmiati; Yopy Mardiansyah; Vitri Aprilla Handayani; Moh. Arafat Wasiru
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.167

Abstract

This research used blood cockle shells (Anadara granosa) originating from consumption waste in the Batam City area. Cockle shell samples were taken and prepared for analysis of mineral content using the FTIR method, including CaCO3 and other minerals. The blood cockle shells were applied to ultisol soil in Batam City to improve its fertility. The shells were crushed into a fine powder, then mixed with ultisol soil with several treatments, including 0 grams (control), 10 grams, 20 grams, and 30 grams with a soil mass composition of 220 grams for each treatment. The mixture of soil and shell powder was stirred until homogeneous before being applied to mustard greens plants. Based on the research results, the addition of shell powder had an effect on the level of plant fertility. The experimental results carried out showed an effect on each treatment given. This is in line with statistical testing with analysis of variance, obtaining a sig. value of 0.037 < α = 5% (0.05), indicating a significant difference in treatment for each treatment.
Analisis Quality Function Deployment (Qfd) Untuk Pengembangan Sistem Electro Pneumatic Berbasis Programmable Logic Controller (Plc) Pada Mesin Semi Otomatis Tester Coding Battery Chandra Aditya Luhur Wicaksono; Ansarullah Lawi; Yopy Mardiansyah
Teknosia Vol. 19 No. 1 (2025): Vol. 19 No. 01 (2025): June 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/teknosia.v19i1.41182

Abstract

This research aims to develop a semi-automatic battery voltage testing machine using electro-pneumatic technology controlled by a Programmable Logic Controller (PLC) at PT VARTA Microbattery Indonesia. This machine is designed to enhance the efficiency and accuracy of testing lithium round cell 2/3 AA batteries, which were previously tested manually. The machine development utilizes the Quality Function Deployment (QFD) method, which identifies user needs through interviews and questionnaires, then translates them into technical characteristics within the system. The analysis using the House of Quality (HoQ) showed that the main priorities are testing accuracy, speed, ease of operation, and safety. This system integrates electro-pneumatic components, sensors, and PLC to control the machine's movements, ensuring a more efficient and consistent production process. The results indicate that the implementation of this semi-automatic machine can reduce the testing cycle time and improve battery production productivity.