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Design of Drainage System Coal Mine at PT. Tebo Agung International Site Project, Semambu Village, Sumay District, Tebo Regency, Jambi Reynaldi, Muhammad
Journal of Earth and Marine Technology (JEMT) Vol 1, No 2 (2021)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2021.v1i2.1744

Abstract

Tebo Agung Internasional Ltd is one of the companies in coal mining that employs the open-pit mining method. This sort of method will create a large basin that can accumulate water inside the mining pit. The drainage system is applied at the Pit-1 Site Semambu is mine-dewatering carried out by draining the water into the sump so that it can be pumped out of the mining area and prevent the runoff from coming inside through an open drainage system (ditch). The result of data analysis demonstrated that referring to the daily rainfall in 2010 – 2019 through the distribution of Log Person Type III, the maximum rainfall being planned was 508.019 mm/day within the return period of 5 years. The intensity of rainfall at the research site was 82.5 mm/hour having a rain duration averagely of 3.1 hours/day. Pit-1 Site Semambu had a catchment area around 469,317.15 m2 and a water discharge totally 61,238.81 m3/day derived from rainwater discharge of 48,530.48 m3/day and runoff water discharge 12,708.33 m3/day, whereas the capacity of the temporary accommodating pond (Sump) was 39,539.55 m3. The pump at the research site could not be operated anymore (broken). Accordingly, the recommendation that can be given to the company is changing the broken pumps with 4 units of multi fall 420 pumps having operating speed 1,300 rpm and actual discharge yielded by the pump 871.64 m3/hour. The pump worked for 14 hours/day and the total water discharge that could be produced was 12,202.96 m3/day. Open channel (ditch) at Pit-1 Site Semambu was the only one with accommodated discharge 1.27 m3/second. Thus, the recommendation that could be delivered to optimally prevent the runoff water coming into the mining area is by adding 2 ditches having the capacities of 0.90 m3/second and 0.75 m3/second which have been adjusted to the planned water discharge.
Pengaruh The Theory of Planned Behavior terhadap Minat Beralih Menggunakan Kemasan Ramah Lingkungan Reynaldi, Muhammad; Lita, Ratni Prima; Maruf
Jurnal Informatika Ekonomi Bisnis Vol. 5, No. 2 (June 2023)
Publisher : SAFE-Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.04 KB) | DOI: 10.37034/infeb.v5i2.577

Abstract

This study aims to determine the intention to adopt green packaging at coffee shops in Padang City. This study uses the theory of planned behavior (TPB) to predict the intention of coffee shop entrepreneurs to use environmentally friendly packaging. The sample in this study is a coffee shop business actor who is not a national franchise in the city of Padang. The results of this study are expected to be able to find out how much coffee shop businesses in Padang City want to use environmentally friendly packaging. This is also expected to be able to reduce plastic waste in the city of Padang.
RANCANG BANGUN ALAT PENDETEKSI KEASLIAN DAN NOMINAL UANG MENGGUNAKAN SENSOR UV GYML8511 DAN TCS3200 Santosa, Slamet Purwo; Reynaldi, Muhammad; aditya, lukman
Jurnal Informatika dan Teknik Elektro Terapan Vol 13, No 1 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i1.5967

Abstract

Penelitian ini merancang perangkat otomatis untuk mendeteksi keaslian dan denominasi uang menggunakan sensor UV GYML8511, sensor TCS3200, dan DF Player untuk umpan balik audio. Uji coba dilakukan pada uang asli pecahan 50.000 dan 100.000 serta uang palsu yang dicetak pada kertas 75 gram, 80 gram, dan kertas lilin. Deteksi keaslian berdasarkan tegangan keluaran sensor UV menunjukkan uang asli menghasilkan 1,01–1,02 V, sementara uang palsu pada kertas lilin menghasilkan 1,04–1,05 V. Perangkat ini mampu mendeteksi denominasi dengan akurasi 90% untuk 50.000 dan 100% untuk 100.000
RANCANG BANGUN ALAT PENDETEKSI KEASLIAN DAN NOMINAL UANG MENGGUNAKAN SENSOR UV GYML8511 DAN TCS3200 Santosa, Slamet Purwo; Reynaldi, Muhammad; aditya, lukman
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 1 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i1.5967

Abstract

Penelitian ini merancang perangkat otomatis untuk mendeteksi keaslian dan denominasi uang menggunakan sensor UV GYML8511, sensor TCS3200, dan DF Player untuk umpan balik audio. Uji coba dilakukan pada uang asli pecahan 50.000 dan 100.000 serta uang palsu yang dicetak pada kertas 75 gram, 80 gram, dan kertas lilin. Deteksi keaslian berdasarkan tegangan keluaran sensor UV menunjukkan uang asli menghasilkan 1,01–1,02 V, sementara uang palsu pada kertas lilin menghasilkan 1,04–1,05 V. Perangkat ini mampu mendeteksi denominasi dengan akurasi 90% untuk 50.000 dan 100% untuk 100.000