The colony shape of four yeast species growing on agar medium was measured for 116 days by image analysis. Initially, all the colonies are circular, with regular edges. The loss of circularity can be quantitatively estimated by the eccentricity index, Ei , calculated as the ratio between their orthogonal vertical and horizontal diameters. Ei can increase from 1 (complete circularity) to a maxim...

We applied reliability theory to explain aging of biological species and came to the following conclusions: (1) Redundancy is a key notion for understanding aging and the systemic nature of aging in particular. Systems, which are redundant in numbers of irreplaceable elements, do deteriorate (i.e., age) over time, even if they are built of nonaging elements. (2) An apparent aging rate or expres...

AIMS To analyze the association between psychosocial working conditions and burnout and its core component emotional exhaustion, a systematic literature review was undertaken including cohort studies, case-control studies, and randomized controlled trials. METHODS The literature search in Medline and PsycInfo was based on a defined search string and strict exclusion and inclusion criteria. Ev...

Currently, in China, improving the quality of teachers' emotional labor has become an urgent need for most pre-kindergarten through 12th grade (p-12) schools because the new curriculum reform highlights the role of emotion in teaching. A total of 703 primary and high school teachers in Mainland China were investigated regarding their perceptions of school climate, emotional labor strategy and e...

This study examined the ability of the HRindex model to accurately predict maximal oxygen uptake ([Formula: see text]O2max) across a variety of incremental exercise protocols. Ten men completed five incremental protocols to volitional exhaustion. Protocols included three treadmill (Bruce, UCLA running, Wellness Fitness Initiative [WFI]), one cycle, and one field (shuttle) test. The HRindex pred...

CONTEXT Conflicts over treatment decisions have been linked to physicians' emotional states. OBJECTIVE To measure the prevalence of emotional exhaustion and conflicts over treatment decisions among US obstetrician/gynaecologists (ob/gyns), and to examine the relationship between the two and the physician characteristics that predict each. METHODS Mailed survey of a stratified random sample ...

Few research studies have discussed the two variables of emotional labor and emotional exhaustion, and even fewer have examined flight attendants as the research subject. The current study employed a questionnaire method to examine 353 Taiwanese flight attendants’ feelings about emotional labor, the status of their emotional exhaustion, and the relationship between emotional labor and emotional...

Violence against professionals and the syndrome of burnout, or the professional exhaustion of health personnel, has acquired enormous significance in recent years, especially in emergency care. Only a small proportion of the aggressions against the health personnel come to light, but there is a great volume of submerged violent incidents that are not recorded anywhere. Protocols and registers o...

HEAT AND HYDRATION MAY NOT BE THE FIRST CONSIDERATIONS OF TOURNAMENT DIRECTORS, COACHES, AND ATHLETES, WHEN PREPARING FOR TENNIS. HOWEVER, HEALTH RISKS AND PERFORMANCE DECREMENTS ARE ASSOCIATED WITH BOTH. THE DEMANDS OF TENNIS, PARTICULARLY DURING MULTIDAY TOURNAMENTS, PREDISPOSE PLAYERS TO INCREASED CORE BODY TEMPERATURE AND LARGE FLUID LOSSES. THIS COMBINATION OF FACTORS CAN LEAD TO DECREASED...