General Periodicity

General Periodicity =========== What is periodicity? Periodicity is the tendency of chemical and physical properties of elements and their compounds to be examined in relation to their position in the periodic table. The Periodic Table of Elements has evolved over the past 150 years. The basic structure of this table is closely related to the current understanding of the electronic structure of the element. However, when the periodic table was first created (by Mendeleev in the 1800's), the electronic structure of the element was not yet designed.

When applying the 4 × 3 matrix format to the human lifecycle, I chose the 24-year generation period and the 6-year cell stage. The period of growth at the age of 24 (wisdom tooth and final brain development), 48 years old (menopause) genital dysfunction, and the terminal phase physical phase at age 72 are perfectly consistent. Endogenous cycle or endocrine secretion of individual cells for 6 years corresponds to growth and social "markers" generally accepted at the age of 6, 12 and 18 years - childhood end and academic start (6) , Adolescence, sexual maturity (12), school graduation At the age of 18, the (legal) adulthood begins, and (usually) the family spreads (to university, military or workplace).

Mid-term adulthood usually refers to the period from 25 to 69 years old. Meanwhile, middle - aged adults experienced a contradiction between generation and stagnation. They may find it useful for society, the next generation, or their nearest community, or they may create uselessness. Physically, muscle strength, reaction time, sensory ability and cardiac output of middle-aged people are decreasing. In addition, women experience menopausal disorders and a sharp decline in hormonal estrogens. Men experience an event of the endocrine system comparable to menopause. Male menopausal disorder is a hormonal fluctuation with physical and psychological effects similar to menopausal women. As men get older, as the level of testosterone goes down, there is a possibility that unevenness of mood and sperm counts may decrease. Sexual reactions such as erection delay to extend ejaculation and prolongation of penis stimulus may also be affected