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All Journal Rekayasa Mesin Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Akurasi : Jurnal Studi Akuntansi dan Keuangan Empiricism Journal Jurnal Sains, Teknologi dan Kesehatan
Ahmad Multazam, Ahmad
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Aerospace Engineering Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Pengaruh Temperatur pada Proses Hot Isostatic Pressing terhadap Porositas, Keausan dan Mikrostruktur Sludge Powder Duralumin Multazam, Ahmad; Suprapto, Wahyono; Pratikto, Pratikto
Rekayasa Mesin Vol 5, No 3 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Sludge is the starting raw material in the process of forming wheels with forging method. Performance wheels strongly influenced by the quality of sludge. Sludge should have physical properties that light , soft and easy strengthened. One material that can be used as materials for sludge are: duralumin material. Duralumin is another name for aluminum & copper alloy (Al / Cu) with a Cu content of about 4 %. Making sludge powder duralumin with powder metallurgical methods can improve the quality of sludge.Making the specimen begins to weigh 100 g of powder duralumin and enter into a mold that has been in the preheating (100 ° C). Wait about 10-15 minutes until the mold temperature reached (450 ° C), (475 ° C) , (500 ° C) , and (525 ° C). Perform (hot iso- static pressing) HIPing by using a hydraulic press machine at 50 MPa and kept constant for 30 minutes. After the specimens were removed from the mold. The results showed the higher temperature tends to result in a percentage sitering porosity and wear rate decreases. This is evidenced by the percentage of porosity at a temperature of 450 ° C , 475 ° C , 500 ° C , and 525 ° C is 1.193 ° C , 1:03 ° C , 0757 ° C and 0733 ° C. While the wear rate at the sintering temperature of 450 ° C , 475 ° C , 500 ° C , and 525 ° C is 0.00095 g / s , 0.00080 g / s , 0.00059 g / s , 0.00050 g / s. Then from the microstructural observations with 500x magnification SEM image shown that with increasing temperature HIPing likely to result looks smooth surface of the test specimen.Keywords: Powder Metallurgy, Temperature HIPing, Duralumin, Sludge, Porosity, Wear, Microstructure.
Pengaruh Manajemen Talenta Dan Manajemen Pengetahuan Terhadap Peningkatan Kinerja Karyawan Di PT. Pas Indonesia Timur Dermawan, M. Riswan; Multazam, Ahmad; Atmaja, I Gde Dharma; Palimbong, Yusuf
Empiricism Journal Vol. 3 No. 1: June 2022
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/ej.v3i1.899

Abstract

Penelitian ini bertujuan untuk mengetahui deskripsi penerapan manajemen talenta, dan manajemen pengetahuan, serta menganalisis dan menjelaskan pengaruh antar variabel secara bersama-sama tidak secara parsial. Jenis penelitian yang digunakan adalah explanatory research dengan pendekatan kuantitatif. Adapun teknik pengambilan sampel yang digunakan adalah teknik proportional random sampling, dengan instrument penelitian berupa kuesioner dan dokumentasi. Penerapan manajemen talenta dan manajemen pengetahuan pada PT. Pas Indonesia Timur yang bertempat di Desa Marada Kecamatan Hu’u Kabupaten Dompu telah berjalan dengan sangat baik. Kedua variabel tersebut juga menunjukan adanya pengaruh positif yang signifikan terhadap variabel kinerja karyawan ketika diuji secara bersama-sama, namun tidak berpengaruh signifikan ketika diuji secara parsial. Hal ini dikarenakan adanya hambatan- hambatan dalam penerapannya. Perusahaan sebaiknya dapat terus meningkatkan efektifitas penerapan manajemen talenta dan manajemen pengetahuan dengan mengatasi hambatan- hambatan tersebut, sehingga kedua variabel tersebut dapat berpengaruh signifikan secara parsial terhadap kinerja karyawan
Perbandingan Efisiensi Aktual Dan Spesifikasi Generator BTG II Power Plant PT. Semen Tonasa 2×35 MW Pada Berbagai Beban Aktual Usman, Usman; Multazam, Ahmad; Gaffar, Ahmad
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol. 6 No. 2 (2022)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/eltikom.v6i2.554

Abstract

The efficiency of generators in a power plant decreases as running duration increases. This can also happen to the generator of the PT. Steam Power Plant. The Semen Tonasa Power Plant is also known as the Boiler Turbine Generator (BTG) Power Plant. BTG II has been operating for approximately 8 years and based on generator operation data, there has been a decrease in the power generated by the genera-tor, when viewed from the power input to the current turbine, compared to the initial operation of this plant. The aims of this study are to assess the value of the real generator efficiency and compare it to the efficiency generator based on its specifications. Data loading is required to ascertain the true value of generator efficiency, as the output power created by the generator and the input power is the power gen-erated by the turbine, which is computed using the enthalpy reduction method. According to the research, the average generator efficiency values for generator units C and D are 91.36 percent and 90.34 percent, respectively, with real average loads of 25,56 MW and 25,08 MW. In comparison to the data standards, generator unit C saw a 6.76 percent drop in efficiency, whereas generator unit D experienced a 7.76 per-cent decrease efficiency. Comparison with the data specifications for generator units C experienced a decrease in efficiency of 6,76% while generator unit D experienced a decrease in efficiency of 7,76%. The efficiency of the generator in unit C decreased 0.85% per year, and unit D was 0.97%.
Pengaruh Sifat Biji Jarak sebagai Bahan Bakar Alternatif Penganti Minyak Tanah untuk Pengeringan Tembakau Virgina Lombok Multazam, Ahmad; Rizal, Khairul
Jurnal Sains, Teknologi dan Kesehatan Vol. 3 No. 2 (2024): Jurnal Sains, Teknologi dan Kesehatan, April 2024
Publisher : LPPM Institut Teknologi Dan Kesehatan Aspirasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/saintekes.v3i2.320

Abstract

Virginia tobacco is the largest agro-industry component in West Nusa Tenggara (NTB). The lack of subsidized kerosene quotas for tobacco extraction, even the central government decided that in 2018 the sub-oil kerosene quota will be abolished, brings its own problems. Based on this problem, research was carried out with the title how to characterize castor beans as an alternative fuel to replace kerosene as a substitute for tobacco extraction fuel with the aim of proving that castor beans can be used as an alternative fuel for drying tobacco. process without reducing the quality and economy of tobacco. This research was carried out experimentally. From the research results it can be concluded that castor bean fuel can be used as a fuel substitute for kerosene for tobacco production as proven by the results of the characteristic test, namely the calorific value produced in this research has met the national standard (SNI), namely 5288.844 cal/gr based on the standard. which meets American standards, namely 4000-6500 (Source: Hendra, 1999 in Sunyata and Wulur, 2008). economic value aspect of fuel consumption / 1 kg of dry castor beans consumes 6.7 kg of castor beans at a price of Rp. 6,700 lower than kerosene, LPG and bioethanol. Variable standard drying temperature with a drying rate of 1 m/s produces tobacco compost with the best quality color and aroma.
Analisa Pengaruh Variasi Merek Kampas Rem Tromol Dan Kecepatan Sepeda Motor Honda Supra X125 Terhadap Keausan Kampas Rem Multazam, Ahmad; Zainuri, Achmad; Sujita, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

AbstractBrake is one component of a motor vehicle that serves to slow or stop the study aims to determine the value of the wear of each brand of brake drum caused by variations in the speed of the motorcycle Honda Supra X125 on the braking load 6 kg. Brake that is used in this study there are three variations of the brand is a brand HONDA GENUINE PART, ASPIRA, and KOMACHI with variations at 40, 50 and 60 km / h and braking load 6 kg. The research was conducted in two phases, namely the field of testing and measuring brake wear in the lab. Metrology using a profile projector, in addition to the Rockwell hardness testing is also performed to determine the hardness of each brand of brake lining before and after testing higher speeds with the same braking load time, braking distance and the wear rate also increased.From the research results smallest brake lining wear occurs there at a speed of 40 km / h and braking load 6 kg. Genuine Parts for the Honda brand it wear amounted to 1.574 x 10 -5 mm / sec, while the brand Aspira it wear 8.47 x 10 -5 mm / sec and brands Komachi it wear 3.500 x 10 -5 mm / sec. Largest brake wear occurs at a speed of 60 km / h and braking load 6 kg. Genuine Parts for the Honda brand is equal to 2.373 x 10 -5 mm / sec, while the brand Aspira it wear 3.626 x 10 -5 mm / sec and brands Komachi it wear 3.701 x 10 -5 mm / sec. 
THE ROLE OF RISK MONITORING COMMITTEE IN ENHANCING CORPORATE RISK DISCLOSURE Multazam, Ahmad; Kurniawati, Estetika Mutiaranisa; Hasim
Akurasi : Jurnal Studi Akuntansi dan Keuangan Vol 8 No 1 (2025): Jurnal Studi Akuntansi dan Keuangan, Juni 2025
Publisher : Faculty of Economics and Business University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/akurasi.v8i1.712

Abstract

Banking companies face challenges in the transparency of financial risk disclosures, which affects investor confidence and the stability of the banking sector. Effective governance mechanisms are required to enhance accountability and risk mitigation. This research examines and provides empirical evidence on risk monitoring committee characteristics and risk disclosure. The sample is selected through purposive sampling on the banking sector detailed on the Indonesia Stock Exchange (IDX) from 2018 to 2022, yielding 205 observations from 44 companies. The research utilizes secondary data sourced from social media platforms, annual reports, and corporate websites. The data analysis employs multiple linear regression. This research found that gender diversity and the frequency of committee meetings positively influence risk disclosure. Meanwhile, the independent committee and the committee qualifications do not significantly affect risk disclosure. These findings provide a basis for improving corporate governance in Indonesian banks especially risk monitoring committees.
Co-Authors Achmad Noerkhaerin Putra Achmad Zainuri Ahmad Gaffar Atmaja, Gde Dharma Dermawan, M. Riswan Hasim Kurniawati, Estetika Mutiaranisa Palimbong, Yusuf Pratikto Pratikto Rizal, Khairul S Sujita, S Sujita, Sujita Usman Usman Wahyono Suprapto