Seasonal affective disorder treatment: Choosing a light therapy box Light therapy boxes can offer an effective treatment for seasonal affective disorder. Features such as light intensity, safety, cost and style are important considerations.
Psychographics is the study of personality, values, opinions, attitudes, interests, and lifestyles. Because this area of research focuses on interests, attitudes, and opinions, psychographic factors are also called IAO variables.hen a relatively complete profile of a person or group's psychographic make-up is constructed, this is called a psychographic profile. Psychographic profiles are used in market segmentation as well as in advertising.
For trace analysis, when the peak of interest is very small, use peak height for calculations, this reduces the error sustained in small changes in peak start and end time variation. The figure shown below illustrates the fact that areas of a chromatographic peak will change if the flow rate changes.. Sample Spiking The technique of âspikingâ a sample involves the addition of a known reference material to a sample matrix, in order to confirm the identity of one of the sample component peaks. Figure 3: Use of sample spiking to increase confidence in peak identification.