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Plant cell walls are composed of complex carbohydrates, proteins, phenolic compounds, and inorganic ions, all of which play functional roles. Cellulose (1,4-fO-glucan) and callose (1,3-fO-glucan) are synthesized in the plasma membrane, while other polysaccharides are synthesized in the Golgi. Plant cell growth occurs with the loosening of the walls, which may be caused by several enzymatic actions. Plant development is related to the morphological changes of cells and tissue, which is caused by structural changes of the walls."

Dr. Hayashi's title of Doctor of Engineering research is X-ray Study on Fatigue Fracture Behavior of Aluminium. In the research, effect of crystal orientation on fatigue crack initiation life, directionality of fatigue strength in cold-rolled aluminium, grain size dependence of fatigue strength and crack growth, effect of test temperature on fatigue strength, fatigue crack growth in cold-rolled and stretched aluminium, etc, were studied. When Dr. Hayashi was working at Mechanical Engineering Research Laboratory, Hitachi Ltd., he studied and developed fatigue crack initiation life prediction...