ABSTRACT Sago starch is a local source of gluten-free carbohydrates and has the potential to replace wheat flour. However, its use in food products such as steamed brownies is still limited due to its tendency to have a hard texture because of its high amylose content. One improvement effort has been made through physical modification of the starch using the heat moisture treatment (HMT) m…
ABSTRACT Bird’s eye chili (Capsicum frutescens L.) is one of the most important vegetable commodities in Indonesia with high economic value, yet its productivity in Riau Province decreased by 822 tons from 2022 to 2023, indicating the need for more effective cultivation technologies. Fertilization combined with the application of rice husk biochar is considered a promising approach to improv…
ABSTRACT Tomato (Solanum lycopersicum Mill.) is a high-value horticultural commodity that requires specific cultivation management, particularly concerning nutrient availability. Potassium (K) is one of the essential macronutrients influencing tomato growth and productivity. Inceptisol soils, which are widely distributed in Indonesia, are characterized by low potassium content, necessitating f…
ABSTRACT Shallot (Allium ascalonicum L.) is a high-value horticultural commodity widely used as a cooking ingredient, industrial raw material, and a source of income for farmers. However, its productivity remains limited due to declining soil fertility and suboptimal fertilization practices. This study aimed to evaluate the effects of vermicompost, NPK fertilizer, and their interaction on the …
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is an important commodity for the national economy through the production of edible oil, industrial oil, and biodiesel. Increasing global demand drives the expansion of planting areas to diverse topographic areas, including highlands. This study examines the development of oil palm vegetative organs at three altitudes: 0–100 masl (K I), 101–…
ABSTRACT Rice (Oryza sativa L.) is the main food source for the Indonesian people, so increasing its production is crucial to meet national food needs. Declining rice production often occurs due to attacks by plant pests, one of which is the stink bug (Leptocorisa acuta Thunberg). This pest control generally uses synthetic insecticides that have the potential to cause resistance and have negat…
ABSTRACT Magnesium (Mg) is one of the essential nutrients present in limited quantities in peat soils. Its availability varies depending on peat depth, decomposition level, and land use. However, information regarding the spatial distribution of Mg in peatlands remains limited, necessitating a spatial approach for accurate estimation. This study aimed to identify and map the distribution of so…
ABSTRACT This study aimed to determine the effective concentration of organic solvent-based Piper aduncum L. leaf extract against the mortality of diamondback moth (Plutella xylostella L.) larvae under laboratory conditions. The experiment was conducted using a Completely Randomized Design (CRD) with five concentration treatments (0%, 0.25%, 0.5%, 0.75%, and 1%) and four replications, resultin…
ABSTRACT The aims of this study were (1) To describe the marketing functions, marketing channels, and marketing institutions of rice farming in Kinali Village, Kuantan Mudik Subdistrict; and (2) To analyze the marketing costs, marketing margins, marketing profits, marketing efficiency, and farmer’s share of rice farming in Kinali Village, Kuantan Mudik Subdistrict. The research method us…
ABSTRACT Infill walls in reinforced concrete (RC) frame structures are generally classified as non-structural elements and therefore are often disregarded in structural design. However, their presence significantly contributes to the overall strength and stiffness of the structure. This study aims to compare the seismic performance of RC frame structures with and without infill walls in ac…
ABSTRACT Masonry walls in buildings are generally classified as non-structural elements and are therefore not accounted for in the structural design. In buildings with soft-story characteristics, neglecting the effect of masonry infill walls needs to be studied further, since soft-story behavior can increase the vulnerability of the structure during an earthquake. A soft story occurs when …
ABSTRACT Javanese culture has a complex family genealogy system, covering up to 18 levels of ancestors and descendants, as well as various horizontal terms such as siblings, uncles, and cousins. This complexity often makes it difficult for younger generations to understand their kinship relationships. This study implements a Depth First Search (DFS) algorithm combined with a Rules Engine to au…
ABSTRACT Generator sets (gensets) are one of the main sources for generating electrical energy, especially in areas not yet covered by the main electricity grid. Optimal generator set performance depends heavily on the stability and balance of its components. This research aims to design and manufacture generator set supporting components that can improve operational stability, energy efficien…
ABSTRACT Three-phase induction motors are widely used in industrial applications due to their reliability, operational efficiency, and simple construction. However, these motors are vulnerable to various faults, especially in the stator winding, which can potentially cause severe damage if not supported by an effective protection system. This study analyzes the power supply protection system …
ABSTRACT The reliability of a power generation system is largely determined by the system's ability to cope with unexpected disturbances. In this context, contingency analysis is crucial for evaluating the impact of disturbances on overall system performance. This study aims to conduct a contingency analysis on the Tenayan coal-fired power plant, focusing on three main components: the boiler, …
ABSTRACT This study investigates the impact of three dimensions of green Supply Chain Management—green procurement, green production, and green distribution—on firm performance using a quantitative research method. Data were collected by distributing questionnaires to 45 small and medium-sized manufacturing enterprises (SMEs) in Pekanbaru. The collected data were analyzed using SPSS softwa…
This study aims to analyze the effect of the Numbered Heads Together (NHT) learning model on students' ability to understand poetry texts in Grade X at SMA Dharma Loka. The problem stems from students' low comprehension of poetry due to traditional, lecture-based methods. The research employed a quantitative method with a Randomized Pretest-Posttest Control Group design. The sample consisted of…
ABSTRACT This study aims to analyze the effect of Competence, Training and Organizational Citizenship Behavior on Teacher Performance SMA Negeri 1 Kampar Timur. This study uses a quantitative approach with a population consisting of all teachers of SMA Negeri 1 Kampar Timur, totaling 59 people. The research sample was taken using the saturated sample method, so that the entire population was s…
Palm oil mill waste is an environmental issue that is often complained about by the community, especially in the area around the industry's operations. In Kabun District, Rokan Hulu Regency, PT. Giga Putra Perkasa faces challenges in responding to the impact of waste complained about by local residents. The public relations communication strategy carried out by PT. Giga Putra Perkasa in ha…
ABSTRACT This study aims to analyze the factors that affect Rupiah Exchange Rate Against the Chinese Yuan. The study utilizes independent variables such as Indonesia Inflation, China Inflation, BI Rate, and External Debt, while the dependent variable is Rupiah Exchange Rate Against the Chinese Yuan. The research method used is the Autoregressive Distributed Lag (ARDL) model processing tec…