As a result of the investigations concerning the elaboration of efficient technologies for local protection of metallic pieces with isolated coats against plasma nitriding, two variants of special paints were elaborated.Those are based on lamella copper powder with a lime magnesia binding system, in which polystyrene read more was added in an organ
A submersible video camera system, which aimed to record the growth image of aquatic vegetation in Antarctic lakes for one year, was manufactured.The system consisted of a video camera, a programmable controller unit, a lens-cleaning wiper with a cashel tail bag submersible motor, LED lights, and a lithium ion battery unit.Changes of video camera (
Global climate change has affected the rate of rising sea level, the frequency, intensity, timing, and distribution of hurricanes and tropical storms which threatens coastal ecosystems such as Bayou Perot, cashel tail bag Little Lake in New Orleans along the Gulf of Mexico.The impact of hurricanes could include wetland and coastal land loss.This pa
The dynamic positioning system is a system that ships rely on their own propulsion devices to maintain position and course.Pod propulsion was more and more installed in dynamic positioning unmanned surface vessels because it can rotate 360 degrees freely.The maximum disturbance of unmanned surface vessel dynamic positioning comes from click here th