ABSTRACT The development of alternative energy sources is currently experiencing rapid growth, particularly in the development of solar power plants (SPPs) that convert solar energy into electricity. As the use of SPPs continues to expand, it is important to understand the factors that influence the efficiency of the system, including temperature fluctuations and partial shading caused by surr…
ABSTRACT This research aims to develop an intelligent system capable of detecting and repelling wild boar pests in plantations. Wild boars are known as agricultural crop destroyers, often causing significant losses for farmers in Indonesia, especially in areas close to forests and mountains. With the increasing need to protect crops such as corn, bananas, and coffee, technology emerges as a cr…
ABSTRACT As population and economic growth in Indonesia increases, so does the demand for energy. For this reason, renewable energy is needed as the right solution to meet energy needs in a sustainable manner. Indonesia is geographically located in a tropical climate so that Indonesia can utilize PLTS as a source of new renewable energy. PLTS utilizes solar energy which will be converted into e…
ABSTRACK This research aimed to conduct a comprehensive comparative performance analysis between a newly developed single-axis solar tracker system and a conventional static solar panel system. The increasing global energy demand underscores the critical need for optimizing renewable energy sources, particularly solar power, which faces inherent challenges due to the sun's dynamic position thr…
ABSTRACT The main issue in conventional single-phase diode rectifier systems is the low power factor and high total harmonic distortion (THD) of the input current, especially under dynamic load conditions. This study aims to design and simulate a Boost Converter system equipped with Power Factor Correction (PFC) to improve power quality by increasing the power factor, reducing THD, and enhanci…
ABSTRACT An antenna-based sensor was designed for the measurement of salt and sugar concentrations in water, operating within the frequency range of 1–3 GHz. The sensor was implemented using two types of substrates: Polyethylene Terephthalate (PET) with a thickness of 0.135 mm, and FR-4 with a thickness of 1.6 mm. Capacitive coupling was employed to achieve narrow bandwidths of 115 MHz on th…
ABSTRACT The reliability of electric power distribution system plays a crucial role in ensuring the continuity and quality of electricity supply to customers. This level of reliability can be measured using several key indices, namely SAIFI (System Average Interruption Frequency Index), SAIDI (System Average Interruption Duration Index), CAIDI (Customer Average Interruption Duration Index), an…
ABSTRACT This research designed a microwave sensor for measuring pesticide residue concentration in agricultural water, operating at a frequency range of 1-3 GHz. The sensor utilizes two types of substrates: Polyethylene Terephthalate (PET) with a thickness of 0.135 mm and FR-4 with a thickness of 1.6 mm. To achieve high sensitivity, the sensor employs a capacitive coupling technique to produc…
ABSTRACT The advancement of Internet of Things (IoT) technology has created significant opportunities to enhance the efficiency of computer laboratory management. However, many laboratories still face challenges in resource monitoring and management. This study develops an IoT-Based Smart Laboratory using ESP32S and RFID RC-522, integrated with OpenWeatherMap for real-time weather data and Bly…
ABSTRACT Long-tailed macaques (Macaca fascicularis) increasingly pose problems for residents in Pulau Sengkilo Village, Indragiri Hulu Regency, due to habitat loss and the resulting human-wildlife conflict. This study aimed to assess the population of long-tailed macaques and identify forms of disturbances caused by their proximity to human settlements. Data collection involved direct obse…
ABSTRACT Sengon (Paraserianthes falcataria) belongs to the low durability class, namely durability class IV-V, which is susceptible to attacks by wood-destroying organisms. In an effort to increase the service life and durability value of sengon wood, preservation was carried out using natural ingredients in the form of soursop leaf extract, which is known to contain acetogenin compounds a…
ABSTRACT Global warming and greenhouse gas emissions continue to rise. The government has a strategy to solve these problems, namely the Forest and Other Land Use (FOLU) Net Sink 2030 which is expected to successfully deal with the problem of global warming. Bungin Island City Forest located in Teluk Kuantan, Kuantan Singingi Regency, Riau Province with an area of 3.7 ha is one of the Gree…
ABSTRACT Crocodylus porosus is a protected species because of its high economic value. This research uses the method using a quantitative method with questionnaires, observation, and documentation. Data is analyzed on the likert scale. The research results show that community perception of Estuarine Crocodiles is high with a percentage of (43.23%) or 37 KK, and the level of community cons…
ABSTRACT Industrial Plantation Forests (IPF) require the availability of high-quality superior seedlings to support successful planting, one of which is Eucalyptus pellita cultivated using the mini cutting method. The success of this vegetative propagation is greatly influenced by the growing medium used. The cocopeat and charcoal-based media currently used as standard operating procedures…
ABSTRACT Tenure conflicts are complex issues that occur in various forest areas in Indonesia, including in the Kepau Jaya Special Purpose Forest Area (KHDTK) in Siak Hulu Subdistrict, Kampar Regency, Riau Province. This study aims to identify the typology of land tenure conflicts, determine the factors causing land tenure conflicts, and analyze land tenure resolution efforts in the Kepau J…
ABSTRACT Welsh onion (Allium fistulosum L.) is an important horticultural commodity widely used as a culinary ingredient. One of the main challenges in its cultivation is the low availability of nitrogen (N) in Inceptisol soil. This study aimed to determine the effect of various nitrogen doses on the growth and yield of Welsh onion and to identify the optimal nitrogen dose. The research wa…
ABSTRACT Coconut (Cocos nucifera L.) is one of the plantation commodities with economic value due to its various benefits. Coconut plants are widely cultivated by communities, both as a source of oil and as raw material for the food industry. However, the limited availability of superior seeds and the increasingly low productivity are the main problems. This study aims to analyze the quali…
ABSTRACT The soursop plants in Riau is still relatively low compared to other fruit plants, one of the causes is slow germination. This study aims to determine the effective interaction between potassium nitrate concentraction and seed soaking duration to break the dormancy of soursop seeds. The research was conducted at the Plan Ecophysiology Laboratory and greenhouse of the Experimental …
ABSTRACT This study aims to determine the components of genetic diversity, herritability, and genetic correlation between components of corn crop yields so that it can determine which characters can be used as alternative selection criteria. This research was carried out experimentally using a random group design with genotypes consisting of 12 genotypes. Each genotype was repeated 3 times…
ABSTRACT Acid soils generally have high hydrogen ions and cause the soil to react acidically. One of the impacts that arise as a result of acid pH is the low P available to plants. Increasing the efficiency of available phosphate can be done by utilizing phosphate solubilizing microorganisms. Phosphate solubilizing bacteria also play a role in dissolving insoluble phosphate into soluble, b…