On the other hand, there is the problem of wear.
Herbivores tend to have specialized cheek teeth with complex patterns of contact (occlusion) and various ways of expanding the crowns of the teeth and circumventing the problem of wear.
The problem of wear has been addressed in different ways, such as head size and material choice.
This finding is worrisome, because it seems that although cementless cups heal well with bony ingrowth, modern liner options have not provided anything new compared to the older ones regarding the problem of wear and osteolysis.
On the contrary, problems because of wear generally do not show up during the first years and in spite of our analyses spanning ten years, the failures are relatively few.
Practically wearable, easily transferrable, and fluorescent artificial leather supercapacitor was fabricated by combining energy storage technology with leather garment industry, solving the intrinsic problem of wearing comfortability in conventional yarn and textile supercapacitors.
This paper focuses on the important problems of tool wear or flexion that induce defects in the part.
This has led to problems of high wear on slipway panels, particularly where the lifeboat mounts the slipway for recovery.
Paper books proved to be rapidly and easily replicable with the printing press, making possible mass readerships, but they too have faced problems of fragility, wear, and oxidation (relieved by acid-free paper).
