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Go to Editorial ManagerThe phenomenon of climate change resulting from the increase of global warming has become one of the main problems facing the world. Where researchers and specialists have worked for many years to find a solution that reduces this phenomenon and limits its risks. It is likely that clean energy is an alternative to fossil fuel sources, which are the main source of global warming. One of the clean energy sources is ocean wave energy, which is a huge and untapped energy source, despite the possibility of extracting large energy from waves. This paper focuses on the study of deep-sea turbines and their results. A study was conducted on the capture chamber. Where this paper presents an experimental model of a water tank with certain dimensions in the university laboratories to describe the dynamic behavior of the capture chamber. The Froude number scale was used to model the dimensions and depth of the water as well as the wave properties. Through experimental work and its results show, and it was found that the power generated by the motion of the wave strength is related to the height and frequency of the wave.
Gait analysis can be described as a field of biomechanical engineering dealing with the subject of human locomotion. This study aimed to identify the effect of Ilizarov on gait when the presence the above-knee prosthesis. The study was made on a 50-year-old male patient was underwent correction right tibia with Ilizarov fixation due to war accident in July 2012. Also, this accident led to trans-femoral amputation. Two-dimensional gait system of a synchronized 25 Hz camera with an AMTI force platform was use for measuring gait kinematics and kinetics data while walking at a self-selected speed. These data can be used as standard measures in pathology studies, as input to theoretical joint models, and as input to mechanical joint simulators treated with Ilizarov and prosthetics.
Searching for an optimal alternative to normal cement concrete (NCC) is an urgent need nowadays in order to reduce carbon dioxide emissions, reduce energy, and reduce waste materials. Therefore, this research aims to examine zero cement concrete (ZCC) slabs under monotonic loads with several paramedic studies including slab thickness (60mm, 80mm, 100 mm), bar spacing (75mm, 150mm, and 225mm), and molarity concentration (6M, 8M, and 10M). The results showed the behavior of reinforced ZCC slabs is similar to or slightly lower than that of normal cement concrete. Increasing slab thickness from 60 mm to 80 mm and 100 mm enhanced the slab stiffness, increased the applied loads, and reduced the vertical mid-span deflection. Decreasing bar spacing by 33.33% and 66.67% relative to 225 mm reduced also the deflection. The energy absorption was increased due to increasing the slab thickness and bar spacing. When the load increased, the slabs eventually failed by a typically visible punching cone (punching shear).