31. :Vitamins and nutrients aren't destroyed by macroscopic mechanical stress . 32. The inserts are made of a piezoelectric material, which generates voltage when placed under mechanical stress . 33. The edges of a rug need additional protection, as they are exposed to particular mechanical stress . 34. This reduces the mechanical stress on the food and keeps fragile ingredients in their original shape. 35. This causes large mechanical stresses on the cathode, which is a major cause of rapid degradation. 36. By increasing the mechanical stress by means of a higher loading, two opposing effects can be observed. 37. This feature cuts down on mechanical stress . 38. The main purpose of teardrops is to enhance structural integrity in presence of thermal or mechanical stresses . 39. The single-celled protozoan produces mechanical stress on host cells and then ingesting cell fragments after cell death. 40. Eastern Algonquians created pots that could withstand not only thermal stress but, mechanical stress of rough use.