The idea of the Internet of Things (IoT) is utilized to increase the advantages of internet connectivity. As long as the electrical device is still connected to the internet, IoT can be utilized to operate it. This study applies the concept of IoT as a fan control and monitoring of the humidity and room temperature through a mobile-based application, so that the room can be controlled remotely using a smartphone before use. It is necessary to always keep the room comfortable to use, so that users can increase productivity and always avoid potential disease attacks when the temperature is unstable. In addition, the IoT concept also makes it easier to turn off the fan if at any time you forget to turn it off. This fan is integrated with the ESP32 microcontroller which has been equipped with a Wireless Fidelity (WiFi) module to access data changes in the Firebase Realtime Database. Room temperature and humidity are measured with a DHT22 sensor and processed using Tsukomto’s Fuzzy Inference System to produce the appropriate fan speed in the Duty Cycle unit. Tools and applications can work as predicted based on the findings of the research conducted. However, the impact of the fan on a closed room cannot cool the room temperature but the room temperature moves up with a change of 0.3 °C to 0.5 °C within 40-75 minutes. Therefore, in the next study it is recommended to use cooling devices such as Exhaust fans or Air Conditioners.

Banten Province, Indonesia, has abundant natural resources. Waste from processing natural resources has not been utilized maximally. Several types of wood and plants used in this study were sengon (albizia Chinensis), bayur (pterspermum javanicum), mahogany (Swietenia mahogany) and rice husk ash as filler. The reference particleboard characteristics used are Indonesian Standard, SNI 03-2105-2006. The characteristics observed were pore diameter, hardness, impact toughness, flexural strength, and thickness development. The particleboard composition is 50% filler, 15% oil palm empty fruit bunches, 20% polyvinyl acetate adhesive, and 15% epoxy resin. The length of fiber used is 5 mm. This research shows that particleboard with mahogany filler has optimum characteristics, namely pore diameter 2.0288 nm, hardness 43 N/mm², flexural strength 641.65 N/mm², toughness 3.54 kJ/m², and thickness swelling 1.20%.

The biggest challenge world education is currently producing graduates who have the academic skills, technical skills, and employability skills are balanced. Employability skills is a number of non-technical skills that are can be transferred into different fields of work, is required to enter the working world, to remain on the job, as well as developing a career in the workplace, or for career development at the new place of work. This research is aimed to validate the employability skills measurement model of vocational mechanical engineering students in South Sulawesi. This research method data survey, in which samples taken from the population and research using questionnaires as a gatherer of data. Total of 219 students as respondents in this study. The final model indicated ten factors measurement model of employability skills which are: communication skills, team work skills, problem-solving skills, initiative and enterprise skills, planning and organizing skills, self-management skills, learning skills, technology skills, health and workplace safety, and personal qualities. Based on the analysis, it is known that the manifest variables are valid in explaining the employability skills constructs variable.

Exposure to humid environments can influence the behaviour of the composite brake pad. The use of hazardous materials in brake pads poses health risks. Therefore, it is essential to utilise more environmentally friendly materials. The brake pads in this study, composed of 35 vol. % phenolic resin, 25 vol. % eggshell particles, 10 vol. % bamboo fibre, 5 vol. % bamboo particles, 10 vol. % alumina powder, 5 vol. % zinc powder and 10 vol. % graphite powder, underwent a rigorous manufacturing process involving cold compaction, hot compaction and post-curing. The samples were immersed in engine oil for 12, 24, 36 and 48 hours. The results of the study indicated that composites made from calcined eggshell and bamboo particles maintained their performance even after being exposed to engine oil. Following this exposure, the composites exhibited a coefficient of friction ranging from 0.33 to 0.36, a friction stability coefficient between 71.59 and 79.19, a flexural strength ranging from 7.23 to 8.25 MPa and a flexural strain ranging from 0.54 to 1.11 %. Additionally, the wear rate experienced a slight increase, measuring between 4.75 and 6.64 mm3/m. The flexural modulus was found to be between 4.44 and 5.49 GPa, while the hardness ranged from 43.35 to 91.05 HRR.

Particle boards are widely used as furniture materials in the world. The particle boards on the market have a disadvantage that is when this materials contact with water, the mechanical properties decrease significantly. Material engineering is carried out by changing the particle board composition and other factors. One of the factors that influence the quality of particle board is wood sawdust mesh. Filler mesh combinations are carried out to obtain the best quality particle board. The result of experiment refers to SNI 03-2105-2006 for some mechanical properties, such as density, thickness swelling, hardness, bending strength, and impact toughness. The compositions of particle board in this research are 15% fibre of oil palm, 50% wood sawdust, 15% resin epoxy and 20% polyvinyl acetate (PVAc). Samples were carried out by cold press single punch method with pressure 30 bar. The result from this research known that the best mechanical properties of particle board on filler mesh combination M40-60-80, those are: density 0.95 g/cm³, thickness swelling 1.93%, hardness 29.30 N/mm², bending strength 16.38 MPa, and impact toughness 3.38 kJ/m². This value has exceeded the particle board on the market.

STUDY OF PARTICLE BOARDS CHARACTERISTIC BASED ON SENGON WOOD PARTICLE AND OIL PALM EMPTY FRUIT BUNCHES