منابع مشابه
Changes in Physical Fitness and Physical Activity During Puberty Do Not Predict Lipoprotein Profile Changes: The Nluscatine Study
To evaluate the effect of changes in aerobic fitness and physical activity on changes in lipoproteins, we measured body composition, peak VO,, vigorous and sedentary activity, maturation, and lipoproteins in 125 children (mean baseline age, 10.5 years) for 5 years. Change in variables was analyzed using the slopes of the regression line obtained by plotting the data for each child. No predictor...
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ultraviolet radiation (uvr) has been accepted as an attractive alternative to chlorination for the disinfection of wastewater. in this study the effluent from sahebgaranieh treatment plant was subjected to changes in uv transmission and turbidity in order to correlate these commonly measured parameters with the performance of a submerged -uv- reactor employed in disinfecting the effluent. studi...
متن کاملPhysical Properties and Compositional Changes of two Cultivars of Cantaloupe Fruit During Various Maturity Stages
Some physical properties and chemical compositions of two cultivars (Semsouri and Shahabadi) of cantaloupe studied during four different stages of maturity from fruit set to completely ripe. The physical properties investigated were the geometric mean diameter (GMD), specific gravity (SG), mean firmness (MF), rind, seed (%) and flesh (%). The chemical compositions were Brix, Titrable Acidity (T...
متن کاملLongitudinal changes in physical self-perceptions and associations with physical activity during adolescence.
The purpose of this study was to examine adolescents' physical self-perceptions and their associations with physical activity using a longitudinal perspective. Utilizing data from the Physical Activity in Scottish Schoolchildren (PASS) study, changes in exercise self-efficacy, perceived competence, global self-esteem and physical self-worth were assessed among a sample of 641 Scottish adolescen...
متن کاملChanges of Children’s Motivation in Physical Education and Physical Activity: A Longitudinal Perspective
Children’s motivation towards Physical Education (PE) decreases over the elementary school year, but little is known about how and why those declines influence changes of children’s intention and Physical Activity (PA). Guided by the expectancy-value model, this study attempted to examine the relationship between changes of children’s motivation to changes in children’s intention for future par...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1964
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(64)88626-4