Summary Static magnetic field (SMF) application in water electrolysis increases hydrogen production. However, the effect of the dynamic magnetic field (DMF) in water electrolysis is rarely studied. This study utilizes DMF to increase hydrogen production in water electrolysis. DMF was generated by rotating a plate‐shaped magnet. As a result, DMF produces 23.1 mL H2, which almost doubled the 12.1 mL H2 of SMF. DMF increases the chance of hydrogen formation by weakening the covalent bond, hydrogen bond, and increase the ion transfer mobility as a result of additional magnetic field strength. This phenomenon consistent with the Faraday's law where fluctuating magnetic field generates an electromotive force that increases electric current density. The high electric current density alters hydroxide ion mobility as the interchanging magnetic force field by DMF increases the ions collision chance. The additional magnetic force by DMF has aligned more water molecules than DMF. Consequently, more water molecule dipoles are exposed during electrolysis. Hence, DMF eases the water‐splitting process by shaking the water molecules, which continuously aligns the dipole and also energizes the water molecules. The energized water with higher kinetic energy is easier to split as the required ionization energy has reduced. This happens as the result of the spin‐pair magnetic energy conversion that is stimulated by external magnetic field. The increase in rotational speed of magnetic rods does not significantly increase hydrogen evolution reaction and lower the electrolysis efficiency. This indicates the presence of DMF is more important for water electrolysis performance than the rotational speed of DMF. Conclusively, DMF enhances hydrogen evolution reaction by an increase in water kinetic energy and increase in ion transfer chance through dipole exposition.

MSMEs Dedy's Babies Wear, in its production process, still uses conventional sewing machines, and it causes the production of baby hats and shoes to be limited. Within a month, Dedy's Babies Wear MSMEs could only produce 2400 sets of baby hats and shoes with the help of 5 workers. A group of baby hats and shoes sells for IDR 10,000. In addition, the product marketing process is only limited to local coverages. As a result, market demand is unstable every month. This community service program aims to overcome the partners' main problems (the low production capacity and limited marketing process). This program is carried out with the stages of observation, training, and assistance in sewing with overlocking machines, as well as digital product marketing assistance through the e-commerce platform. From the evaluation, the production of MSMEs capacity has doubled. In addition, customer orders through e-commerce have become a potential source of income for partners.

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Train is a high efficiency mass transportation which is suitable to increase life quality and support of high citizen mobility. The purpose of this paper is to produce some recommendations of improved railway carriage design which are accessible for disabilities, ergonomics and economics. Firstly, the research started with theoretical studies on the product design development, House of Quality (HoQ), visual displays design, anthropometry, and the needs of disabilities. Next step collected data from the open survey and then form the closed survey of 30 respondents who has physical disabilities and visual impairment to understand the passengers’ need. The results of voice of customers shown that an easy access of disabilities people in the carriage has the biggest negative gap between reality and expectation for 1.16 and then following by space availability of wheelchair for 1.10, the seat numbering for visual impairments passengers=0.85, and the ease of emergency aid=0.71. The HoQ provided analysis of room 1 for customer needs, room 2 for voice of team design, room 3 for relationship matrix, room 4 for benchmarking, room 5 for technical benchmarking, room 6 for correlation matrix, and room 7 for weighted importance and relative importance. The QED results shown that the first rank of relatives importance was distance between seat with score=0.618, the second was colour on seat numbering and train series=0.561, and the third was emergency button=0.439. New design recommendation of carriage design should contain of modified seat layouts, improved wheelchair and aisle space, added guiding blocks, emergency assistance buttons, additional folding chairs, and handrail adjustments. Alternative designs were successfully created and able to increase the seat number of the railway coach.

Air electrolysis is the decomposition of air compounds (H2O) into Oxygen and Hydrogen using an electric current. Currently, the efficiency of conventional electrolysis is about 50%. The use of catalysts is part of an effort to increase Hydrogen production. In this paper, 50 ppm and 100 ppm of Bio Activated Carbon of Sugarcane Leaves (BKADT) have been added as catalysts to increase Hydrogen production. FTIR testing has shown that BKADT has an aromatic ring functional group that has a magnetic field. By using ImageJ software, it has been proven that the BKADT surface has an electric charge which is dominated by a positive charge. The magnetic field plays a role in Hydrogen, where the electric charge plays a role in increasing its dissolution so that it becomes a good conductor. As a result, a large increase in BKADT increases Hydrogen production. The greatest hydrogen production of 14.5 ml for 10 minutes was obtained at the addition BKADT of 100 ppm.