In the era of globalization and the demands of the Asean Economic Community (MEA) requires quality human resources. According to the 2019 PISA survey, Indonesia is ranked 72 out of 77 countries and the 2013 curriculum requires students to work on high-level thinking chemistry questions. Based on the results of interviews with chemistry teachers at SMAN 1 Pekanbaru, MAN 1 Pekanbaru, and SMAN 14 …
Chemistry is an abstract conceptual understanding and algorithmic understanding. This study aims to find out the concepts that are misconceptions and the percentage of misconceptions in students chemical bonding material. This study uses a descriptive method with a quantitative approach. Analysis misconceptions are carried out at SMA Negeri 1 Pangkalan Kerinci, using a four-tier multiple choice…
This study aims to analyze the feasibility of the four tier multiple choice diagnostic test instrument, to find out on what concepts students have misconceptions and find out the category of students' misconceptions on the reaction rate material. This study uses quantitative descriptive research methods. The population in this study were all students of class XII MIPA SMAN 2 Pekanbaru, while th…
This study aims to produce an interactive e-module (electronic module) product using sigil software on the subject of valid chemical bonds according to material and media experts based on aspects of content feasibility, presentation, language, graphics and software utilization as well as user response. This study uses an R & D design (research and development) with the ADDIE development mo…
This research aims to develop Student Activity Worksheet on hydrocarbon compounds based on the SIMAS ERIC Model. Student Worksheet Based are designed according to the stage of the SIMAS ERIC learning model. The type of this research is research and development (R and D) with reference to the development process of 4-D. The object of this research is student activities worksheets based on Simas …
This study aims to develop Osborn-based worksheets on the subject of Acids and Bases for class XI SMA/MA, determine the validity of worksheets based on content feasibility aspects, Osborn characteristics feasibility aspects, linguistic aspects, presentation aspects, graphic aspects and determine user responses to the developed worksheets. This type of research is research and development with a…
Advances in science and technology can now be used to develop the quality of education. Information technology represented by computers has now been widely used as multimedia in learning. The purpose of this research is to develop androidbased learning media using the Adobe Animate application on colloidal subjects for class XI MIA SMA/MA with valid categories based on 4 aspects, namely de…
Curcumin is one of the secondary metabolites that chemically belongs to the phenolic group. Curcumin has long been known as a yellow substance in the rhizomes of Zingiberaceae, which are used as traditional medicine in Asia. Curcumin analogues may have the same or even better pharmacological properties. The asymmetric curcumin analogue compound 1-benzyl-3-((e)-2-chlorobenzyliden)- 5-((e)-4-…
Hydrazone which is a compound with the group ‒CH=N‒NH‒. Hydrazone containing azomethin -NHN=CH- can be synthesized by heating at a certain temperature by substituting hydrazine/hydrazide with an aldehyde and has various bioactivities such as anti-cancer, anti-inflammatory, and anti-bacterial. For further development in this research, the synthesis of the compound N'1,N'3-bis-((E,E)-2…
Abstrack : Biomass is an alternative energy source because it has hydrocarbon molecules. In this study, processing of biomass into briquettes from plantation waste is carried out in the form of Oil Palm Empty Fruit Bunches with spent bleaching earth to increase the calorific value produced. This research was conducted to determine the effect of the concentration of mixed empty bunch of pal…
ABSTRACT The petroleum industry is one of the largest oil and gas companies in Indonesia. From the exploration and production of petroleum, it turns out that the petroleum industry also produces petroleum waste which can pollute the soil. For waste handling, it is necessary to have efficient and environmentally friendly petroleum processing, in the form of brick making. The procedure for m…
ABSTRACT The design of an ethylene plant from cracking naphtha using the MaxEne process aims to assess the feasibility of the plant for establishment. The ethylene plant is designed with a capacity of 155,000 tons/year. Naphtha, which is the main raw material for obtaining products ethylene according to capacity and the production process used is MaxEne where The MaxEne unit is a new and i…
ABSTRACT Cumene is a compound that is very important for the development of the chemical industry, including its uses, among others, as a raw material for the manufacture of phenol, acetone, acetophenone, resins, solvents and terephthalic acid, while for the mechanical industry, cumene compounds are used for the manufacture of fuel additives with the aim of increasing aircraft piston engin…
ABSTRACT Aromatherapy candles are an alternative application for inhalation, namely the inhalation of aromatic vapors produced from a few drops of essential oil. The aroma used is coffee essential oil obtained from maceration extraction of Liberika coffee beans with a yield of 19.7 ml and a yield of 2.9% -3.12%. This study aims to see the color, assess the aroma of candles before burning, …
ABSTRACT Gelatin is a substance used to make gels and is widely applied in industrial fields, such as the food, pharmaceutical, and cosmetic industries. This study aims to understand the process of making gelatin from broiler thigh bones, knowing the effect of temperature and time of extraction of gelatin from broiler thigh bones. Extraction of gelatin through several stages, namely degrea…
ABSTRACT Fe content is a metal that is quite high in peat water. One technology that can be applied to remove Fe content is aeration. Aeration is the process of adding oxygen to water so that it can cause Fe oxidation reaction which will then cause Fe(OH)3 deposition. This study aims to determine the ability of the cascade aerator to remove Fe content in peat water with discharge variation…
ABSTRACT The volume of waste generation is increasing as the consumption of the Riau University community increases every day, where the processed organic waste material is 137.16 Kg/day, which has an impact on the accumulation of waste, especially at the TPS of Riau University. Therefore, an alternative waste management is needed to reduce the volume of waste that will be transported to …
The pulp industry generally uses wood as raw material for pulp making. The limited number of wood raw materials causes a raw material crisis. Indonesia is a rich country of agricultural and plantation products, one of which is pineapple leaves. Pineapple leaves contain 71.5% cellulose content that can be used for pulp making. This research uses semi mechanical soda method. The fixed variable of…
Oil Palm Fronds can be used as alternative energy source by using torrefaction process. Oil Palm Fronds has a calorific value of 15439.39 kJ/kg. The calorific value can be increased by torrefaction. Torrefaction is a pre-treatment process of biomass into solid fuel within temperature range of 200-300 oC in an inert condition. This research aims to produce solid fuel from oil palm fronds and stu…
Curently, various types of catalysts have been investigated for the production of biodiesel from high free fatty acid feedstock. Waste Cooking Oils with high free fatty acid (FFA) can be used as a feedstock for biodiesel production. Various types of catalysts have been investigated for the production of biodiesel from high FFA feedstock. This research aims to sinthesize ZnO catalyst from ZnC2O4…