ABSTRACT Maize (Zea mays L.) is an important food crop in Indonesia, serving both as a food source and livestock feed. Declining maize productivity is often linked to low soil fertility, especially in marginal soils such as Ultisols. This study aimed to examine the effects and interaction of solid compost and coal fly ash application on maize growth and yield, as well as to determine the o…
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is a major plantation commodity in Indonesia, particularly in Riau Province, due to its high potential for development and its role in producing vegetable oil. As of 2022, Indonesia's oil palm plantation area reached 14.98 million hectares, with 2.85 million hectares located in Riau, accounting for 20% of the national total. Delayed flowering and…
Multiple linear regression analysis is a technique in statistical models that is used to analyze the influence of two or more independent variables on the dependent variable. One of the important assumptions in multiple linear regression analysis is the absence of multicollinearity in the regression model. In this research, the generalized ridge regression method is applied to overcome the prob…
ABSTRACT Clania tertia is a type of bagworm that attacks oil palm plantations in Indonesia. A common bagworm control technique is to use synthetic pesticides that can have a negative impact. The solution offered is to use the entomopathogenic Metarhizium anisopliae rice field isolate as an environmentally friendly alternative. This study aims to obtain the concentration of entomopathogenic fun…
ABSTRACT Oil palm plant is one of the plantation commodities that have an important role in economic activities in Indonesia. Cultivating oil palm plants as monocultures causes the environment more favorable for insect pests to attack the plants. To overcome this, it is necessary to observe the types and populations of pests on palm oil plants. This research aimed to obtain information and…
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is one of Indonesia's main plantation commodities, especially in Riau Province. One of the key factors influencing the productivity of oil palm is the time required for flowering and fruit maturation. This study aimed to evaluate the interaction effects of coal-based fertilizer and NPK fertilizer, and to determine the optimal combination that aff…
ABSTRACT Coconut (Cocos nucifera L.) is an important commodity for the people of Indonesia, especially in Indragiri Hilir Regency, Riau. The land in coastal areas is generally tidal land, which often faces various problems. This study aims to determine the quality of coconuts produced based on differences in land elevation. The research uses a non-experimental comparative observational ap…
ABSTRACT This study aims to see the interaction between coal fertilizer and potassium fertilizer and get the best combination of coal fertilizer and potassium fertilizer for the time of flower emergence and production of oil palm (Elaeis guineensis Jacq.). This research was carried out in an oil palm plantation in Agrotourism Village, Rumbai District, Pekanbaru City, Riau. This research was ca…
ABSTRACT Traffic accidents are frequent offenses that can result in material and immaterial losses. In Pekanbaru City, the number of traffic accidents increases every year. As an alternative settlement, restorative justice is often used by the people of Pekanbaru City because the settlement is considered to prioritize recovery rather than retaliation. Therefore, the purpose of this thesis rese…
ABSTRACT Law Number 35 of 2014 concerning Child Protection is a legality granted by the state to guarantee the realization of children's rights so that they can live, grow, develop and participate in the best possible way in accordance with human dignity and dignity, and to realize quality, noble and prosperous Indonesian children and receive protection from violence and discrimination. Howeve…
ABSTRACT The phenomenon of sexual violence against children in Siak Regency still occurs at a fairly high rate, even though this area has received the title of Child- Friendly Regency from the Ministry of Women's Empowerment and Child Protection of the Republic of Indonesia. This condition shows a gap between the symbolic awards received and the reality on the ground, so an in-depth study …
ABSTRACT Licensing is the granting of legality to a person or certain business actor/activity in the form of a permit or business registration certificate. Transportation of people using public motorized vehicles not on a route is transportation served by public passenger cars or public buses in urban areas and/or certain areas or from one place to another, which has an origin and destination …
ABSTRACT The use of Lethal Autonomous Weapon Systems (LAWS) raises complex moral, ethical, legal, social, and political implications. One of the main concerns is the potential violation of fundamental principles in international humanitarian law, such as the principles of humanity, distinction, and proportionality. Without direct human control, decisions made by autonomous weapon systems in ar…
ABSTRACT As a growth center in Riau, the city of Pekanbaru faces numerous challenges with transportation infrastructure, particularly concerning pedestrian pathways. Jalan Hangtuah, which serves as a major route connecting various essential facilities, including schools, mosques, and hospitals, experiences significant pedestrian traffic during peak hours. However, the condition of the road in …
ABSTRACT Coastal areas are typically characterized by non-uniform soil properties, often featuring soft, water-saturated soils with high plasticity, which frequently results in low soil bearing capacity. This study aims to investigate the relationship between California Bearing Ratio (CBR) values and Mackintosh Probe (MP) test results by utilizing a mixture of clay soil comprising bentonit…
ABSTRACT Benzoic acid is an intermediate material needed in Indonesia. The benzoic acid plant is designed with a production capacity of 18,000 tons per year. The raw materials used are toluene and oxygen, with the assistance of cobalt acetate catalyst through the toluene oxidation reaction. The average import of benzoic acid in Indonesia is 8,339 tons per year (BPS, 2023). It is expected that …
Attira Denova ABSTRACT The polymer industry is one of the basic materials industries that is quite popular because of its widespread use in life. The development of the polymer industry began in 1839, with the discovery of vulcanization by Charles Goodyear. Until 1970 there were more than 25 polymer products produced and this continues to increase to this day. The important role of polymers i…
ABSTRACT Academic communication between students and lecturers in the Informatics Engineering Study Program at Universitas Riau currently relies on general platforms such as WhatsApp and email. This leads to issues such as the mixing of academic and personal messages, as well as difficulties in documentation and searching for discussion topics. This study aims to design and develop a web-based…
ABSTRACT The academic guidance process in the Informatics Engineering Study Program at Universitas Riau is still carried out informally through platforms such as WhatsApp, resulting in a lack of documentation, slow communication, and minimal supervision from the head of the program. This study aims to develop a web-based academic guidance reservation system to make the guidance process more or…
ABSTRACT The environmental pollution that is the center of attention is industrial waste. Adsorption has been shown to be a more effective method for absorbing heavy metals from wastewater. The adsorbent commonly used in adsorption is activated charcoal. Yellow bamboo is a material that can produce charcoal by carbonization. The aim of this research is to make adsorbents from bamboo, to ch…