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All Journal JURNAL EDUCATION AND DEVELOPMENT ComTech: Computer, Mathematics and Engineering Applications Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari
Kasih, Tota Pirdo
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Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Languange, Linguistic, Communication & Media Mathematics Transportation

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The Effect of 5K2S Implementation to the Opportunities of Increasing Productivity and Workplace Improvement in PT. Andesen Jaya Plastik Rachmatullah, Rachmatullah; Kasih, Tota Pirdo; Purba, Hardi Humiras
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 4 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i4.2197

Abstract

The success of Japanese companies in improving productivity is because they have a culture and a high work ethic to the application of KAIZEN management system. One such application is the Cultural 5S (Seiri, Seiton, Seiso, Seiketsu, Shitsuke). In the Astra group, 5S is known as 5K2S (Order, neatness, cleanliness, sustainability Discipline, Safety, and Service). This study aims to assess the success of the application of the system 5K2S of PT. Andesen Jaya Plastik relating to opportunities for productivity. The method used isquantitative method with a descriptive study. The type of data used is primary and secondary data. While the techniques used in collecting the data are interviews, questionnaires, and literature studies. The number ofrespondents was 31 employees. Analysis of the data used is descriptive and multiple linear regression analysis. The real success rate reachs 82.24% at the stage of familiarization (effective) and they have not yet advanced tothe next stage (prevention). The response of employees is between the Agree and Strongly Agree that is 4.11 point. The correlation between 5K2S to the opportunity of significant Productivity Improvement is Seiri/Order,Seiso/neatness, and Seiketsu/Sustainability.
PENGARUH PENAMBAHAN FLY ASH TYPE C PADA BETON DENGAN AGGREGAT SLAG NIKEL DAN BOTTOM ASH Mustika, Wayan; Kasih, Tota Pirdo; Aswad, Nini H
STABILITA || Jurnal Ilmiah Teknik Sipil Vol 12, No 2 (2024):
Publisher : Fakultas Teknik Jurusan Sipil Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/jts.v12i2.48704

Abstract

ABSTRAK Fly ash memiliki sifat pozzolan, dapat mengikat jika bereaksi dengan air. Proses peleburan biji nikel menghasilkan limbah berupa slag yang jumlahnya sangat besar. Bottom ash merupakan butiran material yang berada pada dasar tungku pada proses pembakaran batu bara untuk pembangkit listrik tenaga uap (PLTU) batu bara, bagian halus butiran terbang ke udara berupa fly ash. Tujuan yang hendak dicapai dari penelitian ini adalah untuk mengetahui karakteristik agregat limbah yaitu slag nikel dan bottom ash untuk bahan pembuatan beton dan mengetahui pengaruh fly ash type C sebagai bahan tambahan (additive) pada beton terhadap workability dan nilai kuat tekan beton. Hasil penelitian menunjukkan bahwa material limbah slag nikel dan bottom ash secara umum layak dan dapat digunakan sebagai bahan pembuatan beton, kecuali nilai serapan air bottom ash yang relatif tinggi yaitu 6,16 % melebihi batas serapan air yang dipersyaratkan yaitu maksimal 3%. Pemanfaatan fly ash type C sebagai bahan tambahan (additive) pada beton meningkatkan workability beton segar, nilai slump test semakin meningkat seiiring dengan penambahan persentase fly ash. Nilai kuat tekan beton meningkat seiring dengan penambahan persentase fly ash sebagai additive sampai kadar 30% dengan nilai kuat tekan 29,87 MPa, selanjutnya penambahan fly ash mengakibatkan kuat tekan beton menurun. ABSTRACT Fly ash has pozzolanic properties and has the ability to form chemical bonds with water. The process of smelting nickel ore produces a substantial amount of slag. Fly ash is the airborne residue of bottom ash, which settles at the bottom of the furnace during the combustion of coal in coal-fired steam power plants (PLTU). The objective of this study is to assess the characteristics of nickel slag and bottom ash when used in concrete, as well as to examine the impact of using type C fly ash as a concrete additive on both workability and compressive strength. The analysis determined that nickel slag and bottom ash waste can be employed in the production of concrete, despite the fact that the water absorption value of bottom ash, which stands at 6.16%, beyond the prescribed limit of 3%. Type C fly ash enhances the workability of fresh concrete and increases the value of the slump test. Fly ash initially increases the compressive strength of concrete by 30% to a value of 29.87 MPa, but subsequently reduces it.
DEVELOPMENT OF VERTICAL-AXIS WIND TURBINE MODELS AS STRENGTHENING FOR SUSTAINABLE RENEWABLE ENERGY Sutjiawan, Kenneth; Kasih, Tota Pirdo; Susanto, Rudy; Yuliando, Noviando; Tanuwijaya, Evan
JURNAL EDUCATION AND DEVELOPMENT Vol 12 No 2 (2024): Vol 12 No 2 Mei 2024
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/ed.v12i2.5630

Abstract

The use of electricity in the world continues to increase over time, the main source of producing electricity in the world is coal which is a basic material that takes a long time to form. Since 2021, British patrol has recorded that coal supplies in the world are available at 1,074,108 million tonnes. In Indonesia, coal still provides 60% of the country's electricity supply and the other 40% uses other energy such as water, steam, gas and other energy. New renewable energy development goals through the Sustainable Development Goals (SDG) in utilizing wind energy through vertical axis wind turbines. The research made three turbine models with different shapes, which then collected voltage data with an air compressor. The experimental results show that the average voltage generated by the two turbine models is 240 mV and 229 mV respectively. For the third model using two sampling methods obtained 353 mV and 292 mV. The use of vertical shaft wind turbines can be used in urban areas, especially in some tall buildings and parks. Research can still be developed by adding several other factors such as wind speed, turbine rotation speed and the aerodynamics of the turbine shape. and using a dc generator that requires a small torque so that it can increase the electric power produced. (KS)
Co-Authors Aswad, Nini H Evan Tanuwijaya I Wayan Mustika Purba, Hardi Humiras Rachmatullah Sutjiawan, Kenneth Tri Joko Raharjo Yuliando, Noviando