This study aims to find out 1) the implementation of Occupational Safety and Health (K3); 2) obstacles in implementation (K3); and 3) efforts that can be made to overcome obstacles in the implementation of K3 in the laboratory department of Physics UIN Maulana Malik Ibrahim Malang. This research is a qualitative descriptive study. Data collection techniques include, interviews, observation, and documentation. The subjects in this study were students, lecturers, and the Head of the Laboratory, by determining samples using snowball sampling techniques. The data validity technique used is source triangulation. The results of the study: 1) occupational safety and health in the Physics study program laboratory have been carried out, but conditions are still found where the K3 indicators do not meet the requirements and need to be improved. 2) Obstacle to the implementation of K3 from human factors, namely; there are still users who do not comply with the rules and SOP. Then seen from environmental factors, namely; handling old damaged equipment, inadequate K3 facilities and infrastructure, improper electrical arrangement, and some laboratories without ventilation. Efforts made by the Physics study program laboratory manager to overcome obstacles in the implementation of K3, namely; make alternative replacements for damaged equipment with their own assemblies, borrow cleaning equipment to cleaners to clean the laboratory, make writings on K3 appeals posted on the walls as K3 signs, electrical plugs on the floor covered with black plaster and given signs, made artificial ventilation and added a blower, gave an appeal at the beginning of each practicum meeting (briefing practicum) and supervision by assistants and laboratory assistants during the practicum, and put up posters of appeals about the use of tools in accordance with the SOP posted on the laboratory wall. Keywords: Study, Safety, Health, Work, Laboratory. Physics study program

The increasing number of traditional boats made from wood can cause the forest to be deforested. Besides, it also results in scarcity and an increase in the price of basic wood materials so that production costs are increasingly expensive—also, the factors of decay by mould, heating, weathering. One of the efforts that can be made in the traditional shipbuilding process is through making boats made from cheap and high-quality E-Glass fibre laminate composite boards. The purpose of this study was to determine the effect of volume composition of E-glass fibres and scallop shell particles on the tensile strength of hybrid composites. Making hybrid composites by mixing scallop shell filler, E-Glass fibre and matrix. Percentage volume fraction 0C: 0E, 10C: 20E, 15C: 15E and 20C: 10E. The results showed that the maximum tensile strength at the volume fraction of 10C: 20E was 34,2694 MPa, this result was higher than the maximum requirements set by BSN in 2006, namely 0.304 MPa. The existence of a strong bond between the fibres and the matrix can increase the tensile strength of the composite as well as the influence of the scallop shell particles which can help the matrix to accept external loads/stresses so that the composite strength increases.

<p>The development of the "Kerr Effect" device has been carried out to measure urine glucose levels of Diabetes Mellitus (DM) patients by applying an external electric field of two parallel plate capacitors. The purpose of this research was to design and construct a new "Kerr Effect" device to measure urine glucose levels of DM patients, to determine the effects of external electric fields and glucose concentrations on light polarization. The measurement of the polarization changes was done by emitting polarized light through a glucose standard solution sample and urine samples of DM patients. In this measurement, the sample was irradiated with an external electric field (0 kV / m - 80 kV / m) of parallel plate capacitors, and the changes of light polarization in the sample were observed. The obtained data of the measurement have been collected and plotted as a graph. The results showed that as the electric field increased the changes in polarization have a tendency to increase. In addition, the amount of glucose concentration in the urine also affected the magnitude of the change in the rotational polarization angle of the light. Therefore, the changes in the rotational polarization angle increase linearly due to the influence of the external electric field and the concentration of glucose in the urine.</p>