ABSTRACT This study aims to provide empirical evidence on the effect of environmental performance, intellectual capital, and capital structure on financial performance. The population in this study was all mining and plantation companies listed on the Indonesia Stock Exchange (IDX) and participating in the PROPER program from the Ministry of Environment and Forestry (KLHK) in the 2020–2023 p…
ABSTRACT Syafira Hospital Pekanbaru was originally established as Syafira Clinic in 2006, now handling an average of 3,200 patients per month with a total of 12 polyclinics. Limited land has led to the use of the road shoulder as a parking lot, long parking duration and ineffective management, which leads to traffic congestion. The methods used in this study include parking accumulation survey…
ABSTRACT Asphalt mixtures in Indonesia consist of three types, Asphalt Concrete (AC), Hot Rolled Sheet (HRS), and Stone Matrix Asphalt (SMA). The main difference among these mixtures lies in the aggregate gradation. Generally, asphalt roads are constructed using Hot Mix Asphalt (HMA), which produces relatively high CO₂ emissions during the heating process, contributing to ozone layer depleti…
ABSTRACT Propylene glycol is one of the organic compounds commonly used as a food preservatives, cosmetic raw materials, wetting agents for chewing gum, monomer in the synthesis of polyester, and anti-freeze liquids. The demand for propylene glycol is increasing along with the development of the industry, especially the cosmetics and textile industries. The market value of propylene glycol glo…
ABSTRACT Indonesia has exported ten shipments of acetophenone through three suppliers to several countries, including China, Japan, and Singapore. However, since domestic production is still insufficient to meet demand, Indonesia still needs to import acetophenone from several countries. This situation presents a significant opportunity to establish a plant to meet domestic demand while compet…
ABSTRAC Indonesia still imports from various countries due to domestic supply shortages. The global acetophenone market was valued at US$ 219 million in 2021 and is expected to grow rapidly from 2022 to 2032. This situation presents a significant opportunity to establish a factory to meet domestic demand and compete with international producers from China, India, and Germany. The demand for ac…
ABSTRACT Methanol is the simplest form of alcohol with the chemical formula CH3OH. Methanol is a colorless, volatile, flammable and poisonous liquid with a special odor. Methanol is an intermediate compound that is used as a raw material for various industries, including the acetic acid, formaldehyde, MTBE, polyvinyl, polyester and DME industries. The Davy-Johnson Matthey process technology is…
ABSTRACT Ammonia is a raw material in fertilizer production. Ammonia is produced by reacting synthesis gas containing H2 and N2 with a ratio of 3: 1. Synthesis gas contains inert gases that do not react such as Argon, in addition to H2 and N2. H2 gas comes from hydrocarbons found in natural gas and N2 gas from free air. Natural gas used as raw material for production before being processed int…
Abstract The acrolein factory is designed with a production capacity of 30,000 tons/year. The raw materials used are propene and oxygen with the help of a bismuth-molybdate catalyst through an oxidation reaction. The oxidation reaction produces acrolein as the main product and acrylic acid as a side product. The average import of acrolein in Indonesia is 38.000 ton/year (BPS, 2023), it is …
ABSTRACT Rhizome plants are spices widely used by Indonesian people as cooking ingredients or traditional medicine. These plants have similar appearances, making them difficult to distinguish for some people. Errors in identifying rhizome plants can lead to poisoning, allergies, or unwanted side effects. To simplify identifying these plants, a system is needed to detect and differentiate types…
ABSTRACT The production forest area used for coal mining has been damaged by mining activities using open pit mining methods, which resulted in damage to the land surface and loss of biodiversity. The existence of reclamation and revegetation activities helps in land recovery efforts. The objectives of this study were to identify the types of pioneer plants and analyze the level of diversity o…
ABSTRACT Terentang wood (Campnosperma auriculatum) is one of the woods used in construction, furniture, or various other wood products. Terentang wood is included in durability class V and strength class III - IV so that it needs to be preserved so that its durability is higher and resistant to attacks by wood destroying organisms such as termites. One type of plant that is toxic to wood destr…
ABSTRACT Coastal community activities, especially with population growth and development, contribute to the degradation of mangrove ecosystems in Riau Province, particularly in Jangkang Village, Bantan Sub-district. Mangrove degradation in this area is becoming increasingly concerning due to excessive exploitation. This study aims to identify the factors that cause mangrove degradation and to …
ABSTRACT Terentang (Campnosperma auriculatum), a fast-growing species with potential as raw material for industrial and construction purposes, faces limitations due to its low natural durability (resistance class V) and susceptibility to subterranean termite (Coptotermes curvignathus) attacks, leading to significant economic losses. While synthetic wood preservatives are constrained by hig…
ABSTRACT The development of shallot plants in Riau Province is one of the efforts to increase regional agricultural productivity. Despite various efforts, shallot productivity in Riau Province is still relatively low. One of the main obstacles faced by farmers is the attack of fusarium wilt disease, which causes significant damage to plants and reduces yields. Fusarium wilt disease is caused b…
ABSTRACT Rice (Oryza sativa L.) is the primary staple food for most Indonesians, but its productivity in Riau Province declined from 4,1 tons.ha-1 in 2022 to 3,96 tons.ha-1 in 2023. One strategy to improve rice yields is enhancing soil fertility through the application of organic and inorganic fertilizers, such as bokashi and NPK. Bokashi improves soil microbial activity and nutrient availabil…
ABSTRACT Independent oil palm farming is one of the key sectors supporting the livelihoods of farmers in Tandun District, Rokan Hulu Regency. However, challenges such as low productivity, limited capital, the use of inferior seedlings, and suboptimal cultivation practices remain major obstacles to increasing farmers' income. This study aims to analyze the income of independent oil palm farmers…
ABSTRACT The research aims to calculate the level of household energy and protein consumption, analyze the condition of household food pattern expectations, and analyze the factors that influence household food consumption in Tembilahan Hulu District. The research was conducted in Tembilahan Hulu Subdistrict with the respondents were housewives as many as 64 samples. This research used the ana…
ABSTRACT This study aims to analyze public perceptions of conflict dynamics, analyze the level of conflict intensity, analyze social impacts and analyze the relationship between emerging conflict intensity and social impacts, from the plantation conflict between the Tebing Tinggi Okura community and PT Surya Intisari Raya. This study uses a quantitative approach. The population used in this st…
ABSTRACT This study aims to determine the characteristics of farmers, the level of interest and participation of farmers, the relationship between characteristics and interests, and the relationship between interests and participation. This study uses a quantitative approach. The population used in this study was 120 farmers, with a sampling technique using purposive sampling with the criteria…