1. Definition of sweet potatoes and status of production use. Sweet potatoes are a perennial herbaceous plant of the genus Monochrome. Its origin is known from southern Mexico to the Lima region of Peru, mainly in the Andes Mountains, and it is cultivated worldwide. However, China produces more than 90 percent of its total output. Sweet potatoes are one of the world's top seven crops, and in add..
-The introduction Necessity and Purpose of Research The elasticity and smoothness of the skin for healthy skin are essential for moisture content, and in the stratum corneum, the skin becomes dry, keratinized, cracked, rough, and brittle, wrinkles increase, and skin aging are facilitated by the physical condition of the skin when moisture is insufficient, so the healthy skin condition can be mai..
1. Oil in the skin 1.1 Sebaceous Gland The sebaceous glands are a skin accessory organ that secrete lipid on the surface of the skin, and are distributed in most parts of the body except for the palm and soles of the feet, and are especially developed in the scalp, chest, etc.The sebaceous glands are shaped like small pouches, and the tubes attached here are connected to hair follicles, which dr..
-.The introduction Tea, made from leaves of Camellia sinensis (L) O. Kuntze, is a symbolic drink with a long tradition and history of more than 4,000 years. Tea, which has shared its history with the beginning of human history, is now in the spotlight as part of life in many parts of the world. The reason why tea has been drinking for many years since ancient society is because it has been widel..