ABSTRACT Graphene is a two dimensional carbon material with superior properties such as high electrical conductivity, exceptional mechanical strength, and significant potential in various technological applications. This study aims to produce graphene from coconut shell-based activated carbon using the Arc Discharge method. High-voltage plasma was generated by a neon sign transformer with an o…
ABSTRACT Solar Power Plants (PLTS) are one of the primary solutions to meet the demand for clean energy; however, significant declines in energy production can reduce efficiency and their contribution to energy supply. This analysis was conducted to identify the main factors causing this decline, both from technical and environmental aspects. The data used include electricity production, solar…
ABSTRACT In the Radio over Fiber (RoF) system, a reduction in received radio frequency (RF) power often occurs due to chromatic dispersion in optical fibers, known as dispersion power fading (DPF). To address this issue, a new technique called Unbalance Sideband Modulation (USM) is proposed. USM is implemented by modulating the optical carrier signal using an RF signal with a single-drive Mach…
ABSTRACT This study aims to determine the optimum tilt angle and orientation of photovoltaic panels to increase the efficiency of solar power generation (PLTS) in Pekanbaru, which has abundant solar energy potential. Experiments were conducted using four monocrystalline PV panels with a capacity of 20 WP with tilt angles of 10°, 15°, 20°, and 25° and orientations of north, east, south,…
ABSTRACT This research aims to evaluate the performance of the Load Shedding system during a generator outage disturbance in large-scale industries such as PT. Riau Andalan Pulp and Paper using simulation testing methods on the Electrical Transient Analyst Program (ETAP) software. In this study, frequency is used as the system reliability index, assisted by the under frequency relay (UFR) prot…
ABSTRACT Waste refers to objects that are no longer used, have no utility, are undesirable, or are deliberately discarded. Waste is generated from human activities and does not occur naturally. At the national level, Indonesia faced a waste emergency in 2022, marked by a total waste volume reaching 36.19 million tons. Of this amount, approximately 35.99%, or around 13,025,812.81 tons, was unma…
ABSTRACT This research aims to develop an Android-based employee attendance application using the Geofence method at PT Wahanakarsa Swandiri. The main problem faced by this company is a manual attendance System that is prone to manipulation and inefficient in monitoring employee attendance, especially for those who work in project locations that change frequently. This application is designed …