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Half-life (symbol t) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential (or, rarely ...
Blood pressure varies over longer time periods (months to years) and this variability predicts adverse outcomes. [18] Blood pressure also changes in response to temperature, noise, emotional stress, consumption of food or liquid, dietary factors, physical activity, changes in posture (such as standing-up), drugs, and disease. [19]
Stress management consists of a wide spectrum of techniques and psychotherapies aimed at controlling a person's level of psychological stress, especially chronic stress, generally for the purpose of improving the function of everyday life. Stress produces numerous physical and mental symptoms which vary according to each individual's ...
Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of reproduction. [ 1 ][ 6 ] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [ 7 ] Menopause is usually a natural change. [ 3 ]
Mostly, the medieval inflation episodes were modest, and there was a tendency that inflationary periods were followed by deflationary periods. [ 26 ] From the second half of the 15th century to the first half of the 17th, Western Europe experienced a major inflationary cycle referred to as the " price revolution ", [ 40 ] [ 41 ] with prices on ...
A drought is a period of drier-than-normal conditions. [ 1 ]: 1157 A drought can last for days, months or years. Drought often has large impacts on the ecosystems and agriculture of affected regions, and causes harm to the local economy. [ 2 ][ 3 ] Annual dry seasons in the tropics significantly increase the chances of a drought developing ...
Binge eating disorder affects about 1.6% of women and 0.8% of men in a given year. [1] According to one analysis, the percent of women who will have anorexia at some point in their lives may be up to 4%, or up to 2% for bulimia and binge eating disorders. [10] Rates of eating disorders appear to be lower in less developed countries. [17]
t. e. Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business and technical fields. The former is an example of simple problem solving (SPS) addressing one issue ...