ABSTRACT Bridges are infrastructure buildings that are commonly used and very functional in everyday. One of the structural components of the bridge is a reinforced concrete beam as a load bearer that will be forwarded to the foundation. The shear capacity of reinforced concrete beam structures sometimes cannot meet the existing requirements. This can be caused by increased loads, inadequate s…
ABSTRAK In the Riau Province, there are 1,534.581 hectares of oil palm plantations (PKS), which produce 15.2 million tons of solid trash year and 28.7 million tons of liquid waste annually. Every year the area of oil palm plantations has increased. Every 1 hectare OPM produces around 1.5 tons of solid waste of empty palm fruit bunches (EFB) annually in a dry state and 2.64 tons of EFB with a m…
ABSTRACT Concrete that uses POFA (Palm Oil Fuel Ash) as a replacement of cement and a silica combination is known as POFA-blended concrete with silica as reactivity improvement material for POFA. This study aims to examine compressive strength, porosity, shrinkage, weight change, and the effect on environment using Toxicity Characteristic Leaching Procedure (TCLP) in peat water curing for 0, 7…
ABSTRACT Melamine is the coating for general or specific purposes such as automotive and paint additives. Melamine is a fine, white, powdered crystal that reacts to aliphatic and aromatic aldehydes into many products. The upcoming trend in the market such as melamine-based foam is likely to provide huge opportunities in the future. In 2018, Indonesia recorded a melamine import number of 32,503…
ABSTRACT Methyl salicylate (C8H8O3) or oil of wintergreen is an organic compound in the ester group in the form of a colorless liquid which has little solubility in water. Methyl salicylate has uses in various industries. In the pharmaceutical industry, methyl salicylate is used as an active ingredient in drug formulations to take advantage of its analgesic effect and as a warming ointment or …
ABSTRACT Acrylic acid is an organic compound in the form of a colorless liquid which is commonly used in many industries such as the diaper industry, the water treatment industry or the textile industry. In the global market, the consumption rate of acrylic acid is expected to reach more than 8,000 kilo tons in 2020. The high demand for acrylic acid is possibly due to the use of this product f…
Truant behavior is the behavior of students who do not attend school or leave school for no apparent reason. And in the end truant behavior becomes a phenomenon that interferes with the learning process, and it is feared that many negative things will occur as a result of this behavior if this problem is not taken seriously. This study aims to determine the effect of behavioral group counseling…
This study aims to determine the relationship between body image and self-confidence in class IX students of SMP Negeri 25 Pekanbaru City. This study uses a quantitative approach with the correlation method. The population in this study were all students of class IX SMP Negeri 25 Pekanbaru City with a total sample of 160 students obtained from sampling using random sampling technique. Then …
Citizenship education is part of formal education in Indonesia, as well as political education in the context of forming good citizens in carrying out the life of the nation and state. One of the most important points of learning citizenship education is to form good citizens and have political knowledge, especially students as the generation of hope for the nation in influencing the country's …
The objective of this research was aimed to analyze find out the types and sources of error made by the first-year students of MAN 2 Kota Pekanbaru. The types of error were analyzed according to the theory by Azar (1989), meanwhile the causes of error were analyzed using the theory proposed by Richards and Schmidt (2002). The research design was descriptive research that focused on quantitative…
This study aims to determine the effect of animated learning media on science learning outcomes for fifth grade students at SDN 001 Kampung Baru Sentajo. This research was conducted using quantitative methods with a quasi-experimental design. The results of the research conducted showed that the activities carried out by the teacher during 3 meetings had increased even though it had not sho…
ABSTRACT One of the most effective ways of controlling the speed of an induction motor is to control the frequency and voltage of the source. This can be realized by designing an inverter that produces voltages and frequencies that can be controlled. The inverter design in this study uses the SVPWM modulation technique combined with a PI controller with specifications adjusted to the load, is …
Radio Over Fiber technology is a technology that combines fiber access networks with wireless systems where ROF uses fiber optic cables as intermediary media to obtain greater transmission speeds compared to direct transmission. The system of transmitting radio signals through fiber optic channels is carried out by modulating the optical signal using the radio signal to be transmitted. Optical…
Endometriosis is still difficult to find and treat. Laparoscopy is the gold standard examination that can be used to detect endometriosis. However, this examination costs a lot of money and requires some preparation, so it is necessary to look for non-invasive tests that can be used as a diagnostic tool for endometriosis. This study aims to analyze and examine the relationship between anoge…
ABSTRACT The grounding system is a safety system in for disturbances to electrical equipment, network disturbances against lightning strikes, and short circuit to the ground that can flow to human body. The purpose of this study is to optimizing design of substation grounding system with T-shape grid and compare the required cost. The method used is modification of the grid shape with addition…
Indonesia is a potential market for skin solution products, especially cosmetics which are shown on television screens every day, or printed in various mass media and with a population of more than 270 million people, making Indonesia a promising market for cosmetic companies. One of the cosmetic products is the Maybelline brand. Maybeline products are starting to enter the Indonesian mark…
ABSTRACT A solar power plant is a renewable power plant that uses energy derived from solar radiation. Solar radiation can be converted directly into electrical energy in a process commonly known as solar cells. Solar panels are also easily exposed to dust on the surface of the panels, which of course also affects the performance of the PLTS. This study aims to determine the effect of pollutan…
ABSTRACT The lighting of the Soeman H.S library is a library that relies on a natural lighting system as its lighting, the lighting in the Soeman H.S library is also assisted with artificial lighting to support the lighting needs of the Soeman H.S library. The library has been operating for about 13 years, so artificial lighting is no longer effective if maintenance is not carried out to meet …
ABSTRACT Garbage s leftovers or waste from the use of a product that s not reused by the owner. inappropriate processing such as accumulation and scattered waste s a problem n big cities. To overcome this problem, waste processing that pays attention to the type of waste, the amount of waste, and the speed at which waste s disposed of can overcome accumulation and scattered waste. This thesis …
ABSTRACT Charcoal is the result of the carbonization process of carbon-containing materials due to decomposition by heat where the charcoal itself can be used as the main ingredient for making graphene. Plasma arc discharge technology has the interesting characteristic that the output power can be controlled easily and precisely by the magnitude of the current. To produce high-voltage plas…