The present invention relates to an Photocatalyst coating of MnO-Fe2O3/PS from natural materials. Photocatalyst is a method for reducing liquid pollutant materials using ultraviolet (UV) light to produce oxidizing and reducing species on the surface of the catalyst. The catalyst used is MnO-Fe2O3/PS. The tools used are HEM-3D (High Energy Milling Ellipse-3D Mention), XRF (X-Ray Fluorescene), XRD (X-Ray Difraction) and SEM (Scanning Electron Microscope). The precursors were made by adding 0.5 grams of polystyrene and 0.4 grams of MnO powder and Fe2O3 powder. The coating is carried out by using the spin coating method and temperature variations using a furnace. The result of this research is that the MnO-Fe2O3/PS nanocomposite coating made has the best photocatalytic properties at a temperature of 60ºC with a grain size of 168.73 nm. photocatalyst coating of nanocomposite MnO-Fe2O3/PS to produce an energy gap of 2.4 electron volts.
The advent of the Covid-19 pandemic has influenced many aspects of life, especially the world of education. One of them is the SMA / MA level, which allows you to activate your learning system online. Therefore, information is needed in the form of a learning system called e-learning that can support learning activities. This study aims to develop a flipped classroom (FGIL) based on guided learning of petroleum materials using Moodle for SMA / MA. This study is categorized as R & D with 4D development models. The e-learning products in this study were validated by 4 chemistry teachers, and validity and practicality test analysis were performed by 3 teachers and 10 students in SMAN 6 Padang using the VAiken formula. It was analyzed. Aiken's V-scores, obtained from the validity of the construct and the validity of the content, are 0.88 and 0.89, which is a high category. The results of practical relationships between students and teachers are in the high categories of 84.38 and 87.29, respectively. Based on the results of the data analysis, we can conclude that the content of e-learning is valid and practical to use in the learning process.
Hydroponics is a technique of cultivating plants (Fruits, Vegetables, and Flowers) by utilizing water and not using soil as a plant medium. Types of hydroponic plants will produce types of plants that are free from pests and diseases. Growing plants with a hydroponic system is an environmentally friendly method because in its cultivation there is no need to use pesticides or even toxic hebicides. Vegetables grown with a hydroponic system are vegetables that will be fresher and free of pesticides. When compared to ordinary vegetables grown with soil media, the nutritional content of hydroponic vegetables will be better maintained and the taste is sweeter and crunchier. This hydroponic vegetable was developed by sowing the seeds in a planting medium called rockwoll that was moistened with water, then after the seeds germinated in a week, the vegetables were transferred to a hydroponic pipe that was filled with water and nutrients. This business was carried out at Pondok Sarai Permata Housing, Lubuk Buaya, Padang. After harvesting, the vegetables will be taken from the netpot, cleaned and then marketed. The target customers of this business are meatball swordsmen, chicken noodle traders, hospitals, mini markets, hotels, and official offices in the Padang area. In addition, this business is also marketed in hospitals because hospitals need healthy foods such as hydroponic vegetables. To maximize so that customers can know our products. We will advertise on several existing social media, such as: Whatsapp, Facebook, and Instagram, and we will also promote it directly to our target customers. In addition, our Hydroponic business also cooperates with Hydroponic business partners in West Sumatra.
Valve Grinding Automatic System Based Microcontroller is an innovation designed and created to be able to work by converting electrical energy into rotational motion and is also able to overcome mechanical difficulties in regulating manual cleaning movements by hand. The Valve Grinding Automatic System Based Microcontroller provides three choices of rotational speeds of 1500 rpm, 2000 rpm and 2500 rpm with each speed requiring a cleaning time of 3 minutes, 2 minutes, and 1 minute. Testing this tool is done by checking the results of each cleaning from the results of different speeds. From the test results using diesel, it is known that the valve cleaning results do not leak and have met the standards. The stages used in the development of the Valve Grinding Automatic System Based Microcontroller are planning, observation and literature study, tool design, survey of materials and tools, procurement of tools and materials, tool manufacture/assembly, tool testing, tool revision, tool socialization, acceptance survey and finished. Tool making is done in the workshop of the Department of Automotive Engineering, Faculty of Engineering, Padang State University. The team has also published a prototype of a scientific article regarding the Microcontroller-Based Automatic Valve Grinding System in the Journal of Automotive and Vocational Engineering Education (AEEJ) Padang State University.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.