Scintillation counter, radiation detector that is triggered by a flash of light (or scintillation) produced when ionizing radiation traverses certain solid or liquid substances (phosphors), among which are thallium-activated sodium iodide, zinc sulfide, and organic compounds such as anthracene incorporated into solid plastics or liquid solvents.
Natural substances are substances which occur in nature.
Aminomorphinans are a relatively young class of opioid drugs among which substances of high in vitro efficacy and favorable in vivo action are found.
Electrons are available in large quantities in a relatively free (mobile) state only in substances called electronic conductors, among which metals are the most important.
One of the most important applications of UV spectrophotometry, particularly for industrial wastewater quality control, is the rapid estimation of the concentration of some substances or some parameter values, among which are aggregate organic parameters and N or P compounds.
Data suggest that smoking has immunosuppressive effects through the various substances contained in cigarette smoke, among which nicotine has the most substantial role.
Plant sterols-stigmasterol and sitosterol were among substances which were being isolated and identified in S. crispus [ 29].
Among substances, which we synthesized for urokinase inhibition tests, the two most active were 1,2-benzisothiazol-3-ylguanidine (IC50 = 33 μM) and its 5-bromo derivative (4 20 μM).
Tobacco smoke contains several goitrogenic substances, among them cyanide, which is metabolized to thiocyanate, a potent inhibitor of the NIS.
Training programs are challenged to produce competent, ethical and caring physicians in a defined time period of three years, but must address key health care needs of the population, among which unhealthy substance use certainly figures highly.
