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.
A Dr. Mehmet Oz, MD , Cardiology (Cardiovascular Disease), answered. The white patches caused by the skin condition vitiligo can spread to other locations or can stay in one area. The course is unpredictable and varies from person to person. Some people with vitiligo say that new patches form on skin that is under pressure or exposed to friction. This can happen from shaving or rubbing from jewelry or clothing.
There's no way to know if your vitiligo patches will spread or go away. So much is unknown about this chronic skin condition that results in depigment There's no way to know if your vitiligo patches will spread or go away. So much is unknown about this chronic skin condition that results in depigmentation or white patches of skin on the body. Some people with vitiligo get a few white patches of skin while others have large depigmented areas spread all over their body, leaving them with little pigmentation in their skin. Sometimes physical or emotional stress can trigger the spreading of vitiligo. If your vitiligo is related to an autoimmune disease such as type 1 diabetes, Graves disease (thyroiditis), or hypopituitarism, the progression of vitiligo may be different. Talk to your doctor to learn more about vitiligo and how it affects you.