Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger.

Due to discrepancies between self-reported and observed pro-environmental behavior, researchers suggest the use of more direct measures of behavior. Although direct behavioral observation may increase the external validity and generalizability of a study, it may be time-consuming and be subject to experimenter or observer bias. To address these issues, the use of data loggers as an alternative to natural observation can allow researchers to conduct broad studies without interrupting the participants' naturally occurring behaviors.

[Appearance of mast cells in the placenta of pregnancies delivered at and before term].

Histologic material included 90 placentas of normal pregnancy and 36 of preterm deliveries. The particular attention was paid to mast cells in connective tissue of placental villi. Samples were fixed in 4% acid formaline and stained both with acridine organ and routine technique.

[Prevention and epidemiology of trichomonal vaginitis in women treated in gynecological departments].

The purpose of the work is to present the results of prophylactic actions used in the Departments of the Institute of Obstetrics and Gynecology of the Medical Academy in Bia ł ystok giving reasons for changes and modifications concerning the present state of procedures. At the same time, attention has been paid to some epidemiological factors of trichomoniasis in women treated in gynecological departments for various diseases of the female genital organ. Women treated in the Departments of the Institute of Obstetrics and Gynecology in 1974-1975 were included in these studies.