Seagrass meadows commonly reside in shallow sheltered embayments typical of the locations that provide an attractive option for mooring boats. Given the potential for boat moorings to result in disturbance to the seabed due to repeated physical impact, these moorings may present a significant threat to seagrass meadows. The seagrass Zostera marina (known as eelgrass) is extensive across the nor...

In materials technology, natural fibers can be employed as reinforcing to create that are lightweight, strong, environmentally friendly, and inexpensive. Bamboo is sturdy, light in weight, simple work with. The hull of a ship the most critical component, it needs made material both strong light. hand-lay-up method throughout composite sheet invoice process. Reinforcing fiber content sheets vari...

BACKGROUND The occupational health is an important issue. In some jobs, the working conditions contribute to musculoskeletal complaints and the overall health of the individual is compromised. Musculoskeletal complaints have gained credence in the public as one of the most important problems in the field of occupational diseases. Physical and mental health of crew members with critical jobs and...

Due to the large increase in Florida’s lakefront communities, the issue of noise generated by airboats has become very important. In response to this matter, Florida Fish and Wildlife Conservation Commission requested a study to determine the major factors and their contribution to the sound generated by airboats. In this study the effect of engine speed, engine type, muffler type, number of bl...

Bis(diphenylphosphino)methane copper(I) tetrahydroborate was synthesized by ligands exchange in bis(triphenylphosphine) copper(I) tetrahydroborate, and characterized by XRD, FTIR, NMR spectroscopy. According to XRD the title compound has dimeric structure, [(μ2-dppm)2Cu2(η2-BH4)2], and crystallizes as CH2Cl2 solvate in two polymorphic forms (orthorhombic, 1, and monoclinic, 2) The details of mo...

Speed boat is one of transportation mode to service the Tidore-Sofifi route picking customers up from Islands Tidore Halmahera island vice versa clear. Many doing a traveling use this demands attention comfort and safety aspects user, especially at Covid-19 pandemic moment. Condition on ground indicates speedboat operating throughout day, in any weather picks people objects. The purpose researc...

We attempted investigate a boat model, based on the conversion of energy of surface wave into a sequence of unidirectional pulses of jet spurts, in other words model of the boat, which is thrusting by the waves field on water surface. These pulses are forming some average reactive stream from the output nozzle on the stern of boat. The suggested model provides the conversion of its oscillatory ...