Jaundice Vitamin D production. Bilirubin count is lowered through bowel movements and urination, so frequent and effective feedings are especially important. Yellow discoloration of the skin, especially on the palms and the soles, but not of the sclera or inside the mouth is due to carotenemia—a harmless condition. Jaundice itself is not a disease, but rather a sign of one of many possible underlying pathological processes that occur at some point along the normal physiological pathway of the metabolism of bilirubin in blood. When red blood cells have completed their life span of approximately 120 days, or when they are damaged,
Hand-colouring of photographs to recreate the appearance and effects of hand-colouring. Colourisation is now available to the amateur photographer using image manipulation software such as Adobe Photoshop. Basic dyes are used in the hand-colouring of photographs. Dyes are soluble colour substance, either natural or synthetic, in an aqueous solution, as opposed to pigments which are generally insoluble colour substance in an aqueous suspension. Aniline dyes, the first synthetically produced dyes originally used for the dyeing of textiles, were first used to dye albumen prints and glass transparency photographs in Germany in the 1860s. When hand-colouring with dyes, a weak solution of dye in