TECHNO-ECONOMIC INVESTIGATION OF ALTERNATIVE PROPULSION SYSTEMS FOR TUGBOATS

In this paper, the main alternative propulsion systems based on internal combustion engines and batteries of a tugboat operating in harbour duties of the tugboat that include Emission Control areas are comparatively assessed.A hybrid Eyebrow Crayon propulsion system and two gas systems that one is with gas engines, other with dual-fuel engines are

The Ca(2+)-sensing receptor (CaSR) regulates Ca(2+) homeostasis in the body by monitoring extracellular levels of Ca(2+) ([Ca(2+)]o) and amino acids.Mutations at the hinge region of the N-terminal Venus flytrap domain (VFTD) produce either receptor inactivation (L173P, P221Q) or activation (L173F, P221L) related to Skin Lotion hypercalcemic or hypo