ABSTRACT Jackfruit or Artocarpus heterophyllus is one of the national fruit plants that grows well in equatorial and subtropical areas. Jackfruit seed flour can be used as an alternative to flour or as a substitute for flour. The purpose of this study was to determine the effect of soaking time variations using Ca(OH)2 solution, and to analyze the characteristics of the resulting jackfruit…
ABSTRACT The mixture of cooking oil and premium has not been widely utilized as a fuel for rose stoves. So far, a vast majority of people use kerosene in rose stoves, however the cost is very expensive. The purpose of this research was to find the alternative fuels in order to replace kerosene for rose stoves. To obtain the best fuel performance, the ratio used cooking oil and premium mixt…
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 Extraction is a process of separating a substance based on differences in its solubility in two different insoluble liquids, usually water and the other as an organic solvent. The basic material used in the extraction process this time is betel nut. The extraction process used is soxhletation extraction, which is the process of separating a component contained in a solid by repeat…
ABSTRACT Taro (Colocasia esculenta (L.) Schott) is one of the tubers that are widely grown in Indonesia. Taro tubers are usually used as food. To increase the quality value of taro tubers, processing the taro tubers into flour by drying. Drying is the process of heat transfer from the dryer and water diffusion (mass transfer) of the dried material. This study aims to determine the effect of…
ABSTRACT Taro (Colocasia esculenta (L.) Schott) is one of the tubers that are widely grown in Indonesia. Taro tubers are usually used as food. To increase the quality value of taro tubers, processing the taro tubers into flour by drying. Drying is the process of heat transfer from the dryer and water diffusion (mass transfer) of the dried material. This study aims to determine the effect o…
ABSTRACT Generally, durian seeds are waste in the surrounding environment. The high starch content in durian seeds has the potential to be processed into flour. At the flour manufacturing stage, the drying process affects the characteristics of the flour produced. This study aims to determine the effect of drying temperature variations on the characteristics of durian seed flour in the for…
In general, experimental activities in schools have not focused on sustainable chemistry learning, because experiments were carried out using synthetic materials, although some of them used materials from the environment but only in small amounts. The research that has been carried out includes exploratory research. The object of this research is to focus on natural indicators of acid-base prac…
This study aims to (1) produce Android-based learning media on the subject of chemical bonds (2) determine the feasibility and practicality of the resulting learning media (3) determine the user's response to learning media, if used in the learning process. The method in this research is research and development using the ADDIE development model, which has five stages, namely analysis, design, …
In the all-technological era where technological growth is developing rapidly and dynamically, students are encouraged to be able to follow learning methods according to their times. The use of technology is one of the most important things in its use in the learning process. Therefore, educators must take an important role in conveying knowledge by utilizing technology such as android. This st…
This Research aims to develop E-modul Based on Exe Learning on the thermochemical for class XI SMA/MA subject valid based on the feasibility aspect of content, aspect of Learning design, aspect of display (vitsual comunication) and aspect of software utilization. This study used Research and Development (R&D) method with ADDIE model which has five stages of development; they are analysis, …
This development research uses the 4-D method which aims to produce a product in the form of a valid LKPD based on 5 aspects of feasibility and to see the response or practicality of the teacher and the practicality of students to the product. This research raises the formulation of problems, among others, whether the development of LKPD is based on Islamic values with a scientific approach to …
The research that has been carried out is aimed at developing an ICARE-based Participant Activities Sheet on the subject matter of the colloid system for class XI SMA / MA and equivalent. ICARE-based LKPD as the object of research is designed and developed in accordance with the stages of the ICARE learning model. This development research refers to the 4-D development model. The data collectio…
This research aims to develop Student Activities Worksheet Based on Learning Cycle 7E Model on the ionic equilibrium and pH of buffer solution material for grade XI SMA/MA. Student Worksheet Based are designed according to the stage of the Learning Cycle 7E learning model. The type of this research is research and development (R and D) with reference to the development process of 4-D. The objec…
One of the internal factors that affect learning outcomes is students' interest in learning. This research .. aims .. to determine the relationship between interest in learning with student learning outcomes on the subject of stoichiometry. This type of research is a correlational study with a quantitative approach. The population of this study were all students of class X MIPA with a sample of…
This study aims to develop E-LKPD based on Discovery Learning using the Adobe Acrobat 11 Pro Extended application on the ion balance and pH of salt solution for class XI SMA / MA, to determine the validity of E-LKPD based on aspects of content feasibility, characteristics of Discovery Learning, linguistic aspects, presentation aspects, graphic aspects, size, cover design, content design and kno…
This development research aims to produce LKPD based on learning cycle 7E on the subject of colloid systems, to determine the validity / feasibility of LKPD based on learning cycle 7E based on learning cycle 7E according to validators, to determine the response of users of LKPD learning cycle 7E according to teachers and students. The development model follows the plomp model. Plomp consists of…
ABSTRACT The level of LPG demand is increasing every year, even the import of LPG has been carried out for a long time, but the need for LPG has not been fulfilled, this has led to the establishment of a Dimethyl Ether (DME) factory to cover LPG needs in Indonesia. DME can also be used as a propellant in aerosol form such as hairspray, insecticide, and air freshener. The main raw material …
Methanol is the simplest form of alcohol with the chemical formula CH3OH. Methanol is commonly used for solvents, anti-freezing refrigerants, and fuels. Methanol is also an intermediate compound that is used as raw material for various industries including acetic acid, formaldehyde, MTBE, polyvinyl, polyester, and DME industries. The need for methanol in Indonesia continues to increase. The…
ABSTRACT Human life will not be separated from vehicles as a medium of transportation that makes it easier to move from one place to another. Until now, oil is the largest percentage of vehicle fuel providers. One of the important components in fuel from petroleum is additives. The addition of additives can produce fuel with a higher octane function as a booster, and also enhances the comb…