ABSTRACT Soil respiration is the main route for the transfer of carbon dioxide (CO2) emissions from ecosystems to the atmosphere which makes it one of the contributors to carbon dioxide (CO2) emissions from the agricultural sector. Activated carbon can improve the physical, chemical, and biological properties of the soil and has the potential to be a useful material for reducing CO2 emissions …
The asian redtail catfish has a tolerance for brackish waters and is can to carry out its metabolism properly and produce energy for respiration and osmolarity so that optimal survival will achieved. This study aims to analyze the osmoregulation response of asian redtail catfish seeds to different salinities, to obtain optimal salinity for good physiological performance for it, to analyze …
ABSTRACT Industrial growth and the increasing number of transportation causes the need for oil to increase. The increasing need for oil is directly proportional to the waste produced, namely used oil. The use of used oil waste is an environmentally friendly and renewable alternative fuel. This study uses a mixture of used oil and Pertamina Dex fuel which is used as fuel in analyzing exhaust emi…
ABSTRACT The existence of traffic lights plays an important role in regulating traffic to reduce congestion and the number of accidents. The lack of public awareness of the rules is one of the problems that has a very big influence. One of the most common traffic violations we encounter and is committed by motorists is a violation of traffic lights. This study aims to determine the condition o…
Poverty in districts in Riau Province, although some districts experienced a decrease in poverty, in certain years there were districts where poverty increased. Kuantan Singingi Regency in 2017 experienced an increase in poverty from 9.85% in 2016 to 9.97% in 2017. Like wise with Siak Regency in 2016 poverty was 5.52% but in 2017 it increased to 5. 80%. Kampar was also the same in 2018 by 8…
ABSTRACT The Riau University outcome-based education curriculum application development project is an information system development proyek to maximize the integration of graduate learning outcomes and learning plans at the University of Riau. Scheduling of these projects is still done by sequencing each activity in the activity without identifying the critical path for these projects. Thus, a…
ABSTRACT Broiler is a type of broiler which is the result of crosses from chicken breeds that have high productivity. There are several strains (trademarks) of broilers that have been successfully developed and circulated in Indonesia. The purpose of this study was to determine the best quality broiler chicks based on calculations using the MOORA method. To determine a quality broiler strain, …
ABSTRACT Lipase is an enzyme that can hydrolyze fat into fatty acids and glycerol. Lipase enzymes are widely needed in the fields of health, industry and biotechnology, but their availability is still low and expensive. One alternative in producing lipase is using microorganisms, namely bacteria. Lipase-producing bacteria can be found in various habitats such as industrial waste, vegetable oil…
ABSTRACT Hippobroma longiflora (L.) G. Don or Kitolod is a weed that used as traditional medicine. The content of secondary metabolites in kitolod leaves and flowers can be use for antibacterial. Identification of metabolites at the tissue level and the area of pharmacological metabolite synthesis can be carried out by histochemical tests. The purpose of this study was to determine microscopic…
There are at least two main approaches in defining poverty, namely the basic-needs-approach which views poverty from the monetary side measured by consumption using the poverty-line, and the capability-approach which views poverty from multidimensional perspective measured based on lack of access experienced by individuals or households on the dimensions of health, education, and living standar…
Disclosure of the sustainability report is basically a statement from the company's management which informs other parties, namely the existing stakeholders about non-financial reports that contain economic, social and environmental performance to their stakeholders. This study aims to examine and analyze the effect of profitability, liquidity, and corporate governance on sustainability re…
Abstract The process of planting rice in general is still done manually, especially as rice planting is carried out by farmers in the Salimpaung District, Tanah Datar Regency, West Sumatra. Planting is usually done by 1-3 people depending on the area of the rice field to be planted with an average spacing of about 23-27 cm. The scarcity of labor in agriculture, especially planting workers, is …
Firm value is an investor's view of the level of success of a company that is closely related to the company's stock price. This can be interpreted that the measure of the company's success is seen from the company's ability to prosper its shareholders. If the stock price is high, then the value is also high. The development of the capital market in Indonesia is currently experiencing inst…
ABSTRAK A tribometer is an instrument used to measure a tribological quantity consisting of the coefficient of friction, frictional force, and volume of wear between two materials in contact with each other. This final project aims to manufacture and assemble a gear type tribometer and determine the effect of oil (lubricant) on gears. Generally what is related to the Tribometer is testing on ma…
The porang chopper machine plays an important role in the flouring process, porang tubers that have been cut or commonly called porang chips will dry quickly so it doesn't take a long time. At present, many home industries use a simple method, namely using manual cutting tools so that it requires a lot of energy and a long time. This final project aims to obtain a porang chopper machine wi…
ABSTRACT The porang chopper machine plays an important role in the flouring process, porang tubers that have been cut or commonly called porang chips will dry quickly so it doesn't take a long time. At present, many home industries use a simple method, namely using manual cutting tools so that it requires a lot of energy and a long time. This final project aims to obtain a porang chopper …
Abstract The process of planting rice in general is still done manually, especially as rice planting is carried out by farmers in the Salimpaung District, Tanah Datar Regency, West Sumatra. Planting is usually done by 1-3 people depending on the area of the rice field to be planted with an average spacing of about 23-27 cm. The scarcity of labor in agriculture, especially planting workers, is …
ABSTRACT Shrimp waste in the form of shells, heads and tails which contain protein, can be processed into chitin which has many uses. Chitin is a polymer produced by shellfish (shellfish). Indonesia is one of the largest shrimp producers in the world, where the shell contains chitin compounds as an alternative adsorbent. This compound can be processed and used as an adsorbent for heavy metals.…
This study aims to analyze the effect of foreign ownership, environmental certification, board of commissioners, women directors on corporate social responsibility disclosure in manufacture companies listed on the Indonesia Stock Exchange (IDX) 2017-2021. The population of this study are manufacturing companies listed on the Indonesia Stock Exchange (IDX) in 2017–2021. The sampling metho…
This study aims to examine and analyze the influence of competence, leadership style, use of information technology and clarity of budget targets on village financial accountability by implementing an internal control system as a moderating variable (an empirical study of village officials in Indragiri Hulu Regency). The population in this study were all villages in Indragiri Hulu Regency,…