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All Journal Bharasumba Jurnal Multidispliner AT TARIIZ : Jurnal Ekonomi dan Bisnis Islam Jurnal Multidisipliner Kapalamada
Tohir, Safaruddin
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Transportation Other

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PENGAPLIKASIAN VARIABLE SPEED DRIVE UNTUK MENGONTROL KECEPATAN MAIN MOTOR DRIVE DC PADA ROTARI KILN PADA PT SEMEN BATURAJA (PERSERO) Tbk Prasetyo, Joyo; Tohir, Safaruddin; Purwanto, Heru
Jurnal Multidisipliner Kapalamada Vol. 1 No. 04 (2022): JURNAL MULTIDISIPLINER KAPALAMADA
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM Azramedia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/kapalamada.v1i04.351

Abstract

Motor  induksi  tiga  phasa Banyak digunakan  sebagai penggerak  peralatan  dengan  kecepatan  penuh atau  relatif  konstan. Konsumsi  daya  pada  motor  induksi  dengan kecepatan  konstan  lebih besar,hal tersebut menyebabkan pemborosan energi listrik. Untuk mengatasi permasalahan tersebut dibutuhkan suatu cara untuk menghemat energi listrik. Salah satu cara untuk menghemat pemakaian energi listrik pada pengoperasian motor induksi tiga phasaadalah menggunakan Variable Speed Drive (VSD). VSD mengurangi konsumsi listrik motor sebesar 30-60%. Potensi penghematan energi motor listrik sangat besar karena sistem motor menggunakan lebih dari 60% daya listrik yang dikonsumsi oleh industri. Dari kelebihan inilah VSD dapat digunakan untuk mengontrol kecepatan motor, wawancara dengan pihak-pihak yang terkait dan mencari sumber-sumber yang relevan untuk mendukung secara teoritis, dengan menggunakan urutan yang memiliki tahapan sebagai berikut: 1). Mengamati dan mempelajari komponen sistem Variable Speed Drive pada motor DC. 2) Memahami prinsip kerja Variable Speed Drive. 3). Memahami perancangan sistem kontrol sistem Variable Speed Drive pada rotary kiln.
PENGARUH PENAMBAHAN FLY ASH TERHADAP KUALITAS SEMEN DI PT SEMEN BATURAJA TBK Maghpiroh, Ana; Iskandar, Damayanti; anaser, Novadri; Tohir, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 2 No 04 (2023): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v2i04.806

Abstract

Fly Ash or fly ash is solid waste produced from burning coal in power plants. Fly Ash was previously obtained from the simple production of burning coal with a gas funnel and dispersed into the atmosphere. The use of Fly Ash on OPC type cement was carried out in this test with varying percentages of 2%, 4%, 6%, 8%, 10%, 12%, 14%. The test was carried out by adding an additive (Fly Ash) to the basic material for making OPC cement. Next, testing the chemical composition properties of Fly Ash using Xray, testing the physical properties of cement, namely testing the compressive strength resulting from molding the mortar and testing the setting time. Meanwhile, testing the chemical properties of cement was carried out using IR (insoluble residue) and SO3. From the results of this research, it was found that the addition of Fly Ash had a positive impact on 7 day compressive strength, setting time and SO3. The addition of Fly Ash from low to high percentages can increase the fineness of the cement so that it affects the setting time and compressive strength of the cement. From this research it was found that the addition of additives (Fly Ash) can improve the quality of OPC cement and in general it is not much different from the physical properties of PCC cement.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI KEPUTUSAN PEMBELIAN KORAN DI MASA KEMAJUAN TEKNOLOGI SEMAKIN MENINGKAT PADA PT ARISMA INDONESIA MERDEKA DI KABUPATEN OGAN KOMERING ULU Malini, Hema; Tohir, Safaruddin; Mahendra, Oka
AT TARIIZ : Jurnal Ekonomi dan Bisnis Islam Vol 1 No 04 (2022): AT TARIIZ : JURNAL EKONOMI DAN BISNIS ISLAM
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/attariiz.v1i04.347

Abstract

This study is entitled Analysis of Factors Affecting Newspaper Purchasing Decisions in Times of Increasing Technological Progress at Pt Arisma Indonesia Merdeka in Ogan Komering Ulu Regency. This study aims to analyze the effect of consumer confidence, distribution and brand image on newspaper purchasing decisions at PT Arisma Indonesia Merdeka in Ogan Komering Ulu Regency. This research is descriptive and uses accidental sampling with a sample size of 94 respondents. Using multiple regression analysis techniques and to test the research hypothesis used the f test and t test. The results of the study are with multiple linear regression Y = 0.891 + 0.421X1 + 0.236X2 + 0.300X3. The equation can be interpreted that the constant is 0.891, which means that if consumer trust (X1), distribution (X2), and brand image (X3), the value is zero (not done), the purchase decision (Y) is 0.891. The coefficient value of purchasing decisions (X1) is 0.421, meaning that if consumer confidence (X1) increases by 1 unit, purchasing decisions (Y) will increase by 0.421. The distribution coefficient value (X2) is 0.236, meaning that if the distribution (X2) increases by 1 unit, the purchasing decision (Y) increases by 0.236. The brand image coefficient value (X3) is 0.300, meaning that if the brand image (X3) increases by 1 unit, the purchasing decision (Y) increases by 0.300. Determination testing obtained the contribution of consumer trust variables (X1), distribution (X2) and brand image (X3) to purchasing decisions (Y) of 80.9% while the remaining 19.1% was influenced or varied by other variables not included in this research model.
Co-Authors anaser, Novadri Damayanti Iskandar Hema Malini, Hema Heru Purwanto Maghpiroh, Ana Oka Mahendra Prasetyo, Joyo