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All Journal Asian Journal Science and Engineering Journal of Evrimata: Engineering and Physics Journal of Agriprecision & Social Impact
Nuraini, Eko
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering Social Sciences

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Format Methods on Storage Media (Hard Disk) for Optimization Data Storage Capacity Saukani, Imam; Nuraini, Eko; Nurhadi, Slamet; Sumarno, Agus Sukoco Heru; Saptawati, Rina Tri Turani; Prasetyo, Prasetyo; Sifaunnufus Ms, Fi Imanur
Asian Journal Science and Engineering Vol. 2 No. 2 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i2.1018

Abstract

This research is to determine how much storage capacity in the File Allocation Table 16 (FAT16), File Allocation Table 32 (FAT 32) and New Technology File System (NTFS), the use of the hard drive is currently the of the maximum capacity will not be able to use when not using the appropriate partition, because it can affect the amount of storage capacity available after the hard disk in the partition. This type of research is reviewed based on its purpose of use, so the research to be conducted is applied research because the products of this research can be used by all computer users. Ultimately, the findings from this study will contribute to a comprehensive understanding of how file system selection and partitioning can influence the actual storage capacity of hard drives, thus informing best practices for maximizing available storage space. Keywords: New Technology File System, File Allocation Table, Storage Media
The Effect of Formalin Concentration and Storage Duration on Elasticity, Tensile Strength, Fur Loss, and Water Absorption of Tanned Rabit Skin Amertaningtyas, Dedes; Husna, Nissa’ul; Andriani, Ria Dewi; Wibowo, RLM. Satrio Ari; Nuraini, Eko
Journal of Agriprecision & Social Impact Vol. 2 No. 2 (2025): July: JAPSI (Journal of Agriprecision & Social Impact)
Publisher : CV. Komunitas Dunia Peternakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62793/japsi.v2i2.47

Abstract

Rabbit skin is one by-product that can be utilized for its aesthetic value through a tanning process so that the skin is resistant to destructive bacteria, namely Pseudomonas aeruginosa and Staphylococcus aureus. Furtigh is the strengthening of fur in the tanning process, in this research the furtigh process uses formalin so that rabbit fur is stronger and lasts longer. The purpose of this research was to determine the appropriate concentration of formalin and storage length used in rabbit fur tanning in the terms of pliability, tensile strength, fur loss and water absorption. The method used in this research is a laboratory experimental method using a Completely Randomized Design (CRD) with a nested design consisting of 4 treatment and repeated 4 times each. This treatment used formalin of 10%, 15%, 20% and 25%. Variables tested included pliability, tensile strength, fur loss and water absorption. Processing data using analyzed by Analysis of Variance (ANNOVA) and continued with the Duncan Multiple Range Test (DMRT). The results showed that different usage of formalin exerted significant influence (P<0,05) on the tear elasticity of tanned rabbit furs with a result of F1: 29,76%; F2: 32,85%; F3: 41,70%; F4: 41,88%. Different concentration usage of formalin have significant influence of tanned rabbit fur (P<0.05) on rabbit skin tensile strength fur tanning with a results of F1: 36.63 N/mm2; F2: 39.69 N/mm2; F3: 43.81 N/mm2; F4: 48.36 N/mm2. Fur loss test showed that the use of different formalin exerted highly significant influence (P<0.01) of tanned rabbit fur loss with a result of F1: 4.15; F2: 3.78; F3: 3.49; F4: 3.40. Water absorption test that the use of different formalin concentration have highly significant influence of tanned rabbit fur (P<0.01) with water absorption with a result of F1: 192.12%; F2: 217.95%; F3: 237.85%; F4: 238.27% on 2 hours of water absorption. Storage length did not have significant influence of tanned rabbit fur (P<0.05) on rabbit skin elasticity, tensile strength, fur loss and water absorption.
The Buck-boost converter in photovoltaics for battery chargers saukani, imam; Nuraini, Eko; Sukoco Heru Sumarno, Agus; Tri Turani Saptawati, Rina; Islahunufus, Imanur; Sifaunnufus Ms, Fi Imanur
Journal of Evrímata: Engineering and Physics Vol. 02 No. 01, 2024
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.26

Abstract

Alternative energy is energy that is widely developed by scientists nowadays, especially in terms of electricity. Currently, the alternative energies that are widely developed are wind power, hydropower, geothermal energy, and solar power. Solar power is a promising energy source in Indonesia. The utilization of solar energy requires photovoltaics to convert solar energy into electricity, while for charging a12V/7Ah battery, a buck-boost converter is used. However, the use of the buck-boost converter still has some shortcomings, such as reversed voltage polarity. To address this issue, it is proposed to use a2-switch buck-boost converter. With the2-switch buck-boost converter, it is capable of charging the battery with an initial voltage of19V, which is then reduced to14.25V to charge the battery with an initial voltage of10.08V to11.16V within60 minutes, maintaining the same polarity as the initial input and with a maximum current from the photovoltaic of3.48A. In this thesis, Atmega16 is used to control the2-switch buck-boost converter and a50Wp photovoltaic with a maximum voltage of 21V and a current of 3.48A..
Co-Authors Dedes Amertaningtyas Husna, Nissa’ul Islahunufus, Imanur Nurhadi, Slamet Prasetyo Prasetyo Ria Dewi Andriani Saptawati, Rina Tri Turani Sifaunnufus Ms, Fi Imanur Sukoco Heru Sumarno, Agus Sumarno, Agus Sukoco Heru Tri Turani Saptawati, Rina Wibowo, RLM. Satrio Ari