As a concept, âresearch ethicsâ refers to a complex set of values, standards and institutional. schemes that help constitute and regulate scientiï¬ c activity. Ultimately, research ethics is. a codiï¬ cation of ethics of science in practice.
Vitamin B-3, also known as niacin, is an essential nutrient for the body. It helps major organs function properly. It also helps the body repair DNA. The recommended daily dose of vitamin B-3 for different groups varies: 2 to 12 mg a day for children. 14 mg a day for women. 16 mg a day for men.
Niacin has a half-life of 20-40 minutes in the human body. The most reliable and sensitive method of measuring niacin status is through urinary excretion. For adults, 24-hour excretion rates less than 5.8 Âµmol/day indicate niacin deficiency while 5.8 to 17.5 Âµmol/day indicate low levels of niacin.