However, such technology has reached a point at which an increase of the endurance and range of operations would require increasing the size of existing AUV designs.
The main goals are the improvement of the bearing contact, the achievement of a predesigned parabolic function of transmission errors, reduction of the magnitude of transmission errors as the precondition of reduction of noise and vibration, and avoidance of areas of severe contact stresses for the increase of the endurance of the gear drives.
In many team sports, the running distance during matches has considerably increased in recent years due to new tactical approaches having been adopted by many teams, thereby increasing the importance of endurance capacity.
Much attention has been paid to fuel cells as they have proven successfully installable in AUV prototypes and have shown good results regarding the increase of range and endurance of AUVs.
One possible way is to use a platinum iridium tip in the readout of ferroelectric media to increase the endurance of the tip [61].
As solar energy is one of the available renewable energy, it can be used to increase the endurance of UAV without adding significant mass nor by increasing the size of the fuel system.
In order for PEM fuel cells to increase the endurance of an in-service battery power supply, without decreasing the peak power, it should be hybridised with a battery.
This dimer penetrates the nucleus and activates the gene [ 79], which increase the endurance of macrophages to hypoxia.
Lab animals and people generally perform better on tests of cognition after several weeks of exercise training, and studies have shown that over time, running and other types of endurance exercise increase the number of neurons in portions of the brain devoted to memory and learning.
This might be due to an increase of aerobic capacity or endurance strength.
