1 Therefore, the idea is to use a set of optimum conditions to get the most efficient yield of ammonia and this involves getting a low % yield (e.g. 8% - 15% conversion) but fast. 2  Described below are the conditions to give the most economic production of ammonia.
Causes of Vitiligo. Melanin is the pigment that gives the skin its characteristic color. Vitiligo is caused by a loss of pigment in the skin, due to destruction of pigment-forming cells known as melanocytes. The exact cause of the destruction of these cells is not known. One possible explanation might be that the body's immune system destroys the cells, as in other autoimmune conditions.
Here, you will learn about the hereditary nature of this skin disorder. Vitiligo and heredity: Studies linking vitiligo to genetics are still inadequate as only 0.75% of the population is affected by this disorder.In addition, very few vitiligo patients are unaware of other family members having the disease.itiligo may have a lot of different causes. The main basis of this condition is melanin deficiency. This can be triggered either by some chemical reaction or hormonal change, or due to some infection of the skin. Vitiligo is often thought to be hereditary.