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As the assessment of the risk of young people's sports activities in a heavily haze-polluted environment is affected by subjective factors that will reduce the accuracy of the assessment, a big data research method for youth sports based on the heavily hazepolluted environment is proposed. A youth sports risk assessment model under the conditions ofheavy haze pollution was constructed by comparing the template of adolescent exercise risk assessment, constraint parameter analysis and exercise risk assessment. The cardiopulmonary function and respiratory system function of adolescents were analyzed analytically. Based on the adaptive ant colony algorithm, the constructed sports risk assessment model was solved. The best youth sports risk assessment results were obtained by optimizing the global convergence through three methods. The results showed that the shortest evaluation time was only 24s with different amounts of sports data. The users that were not satisfied with the method were less than 0.4%, which indicated good practicability. This study can effectively complete the risk assessment of teenagers with different sports intensity under the heavy haze environment. [ABSTRACT FROM AUTHOR]

The agronomic and physiological characteristics of fruit were compared between two lines of 'Micro Tom' tomato which differed in their fruit cuticle chemistry. A wild-type (WT) and a mutant line (lecer6) deficient in/3-ketoacyl- CoenzymeA synthase (LeCER6), an enzyme involved in cuticular wax synthesis, were studied. The lecer6 line showed significantly lower levels of wax aliphatics and higher levels of terpenoids. Lecer6 fruit also had lower levels of cutin monomers than WT fruit. The agronomic characteristics of fruit from the mutant line were generally different from WT fruit. Osmotic values and dry weight percentages (% DW) were higher than in WT fruit. These findings can be explained by the higher water permeance of the lecer6 fruit cuticle, resulting in a higher rate of cuticular transpiration. Fruit from lecer6 plants were not as firm as WT fruit, which may also have resulted from excessive water loss through the cuticle. Higher rates of water loss in lecer6 fruit did not seem to be related to changes in cuticle thickness. The biomechanical properties of the cuticle also differed between the two tomato lines. Transient creep tests of isolated cuticles were used to generate stress-strain curves for the fruit cuticles of each line. At the immature (green) stage of development, cuticles of WT fruit were more elastic than those of lecer6 fruit, as shown by a lower elastic modulus. However, at the mature (red) stage of development, WT fruit cuticles had become more rigid, and no differences were apparent between the two lines. These data show that a single gene mutation for fruit cuticular wax synthesis has a pleiotropic effect on many important agronomic and physiological attributes. [ABSTRACT FROM AUTHOR]

An abstract of the article "Budding and Fission of Cationic Binary Lipid Vesicles Induced by the Incorporation of Pyranine," by Zhonghua Wang and colleagues is presented.