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.
Spread of the virus that causes hepatitis B (HBV) occurs when a bodily fluid of an infected person enters the body of an uninfected person. So, HBV spreads by having unprotected sex with an infected person, sharing needles for drugs, steroids, piercing, or tattooing, infected sharps, or from mother to baby during birth.pread of the virus that causes hepatitis B (HBV) occurs when a bodily fluid of an infected person enters the body of an uninfected person. So, HBV spreads by having unprotected sex with an infected person, sharing needles for drugs, steroids, piercing, or tattooing, infected sharps, or from mother to baby during birth.