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Objective. Given the extended state of alertness and online education, this study aims to highlight the need for movement of children aged 11-14 years during the pandemic, their preferences for sports and how much they are aware of the role of exercise in maintaining their health status. These attitudes were correlated with parents' attitudes towards the physical activity of their children. Methods. The current study is based on questionnaires applied to 137 middle school students and 118 parents regarding online education. Results. The results indicate that students want to participate face-to-face in the physical activities offered by the educational system, are aware of the need for exercise and express their preferences for certain sports. In relation to these results, parents' opinions reflect how they support their children's physical activity and influence their lifestyles. Conclusions. Emotional problems are felt by most middle school students and their parents, who consider it necessary to resume physical activity and the educational programme in face-to-face format. [ABSTRACT FROM AUTHOR]

Problem statement. Nowadays achieving an effective collaboration between school and family for education of children is a hot topic and parents can become real partners for teachers in education, if is established a beneficial interaction regarding students in order to form a harmonious personality, to understand and to accept the requirements and conditions involved in the educational process. The aim of the research is to identify different ways to increase efficiency in educational process in the school units of Constanta County. Research objectives are: to identify the attitudes of parents towards school; to determine the level of satisfaction of the parents with various specific aspects of education; to compare the levels of satisfaction of the parents at the beginning and at the end of educational system of children; Methods. The study appreciated aspects and to recommend these aspects to the managers for optimizing the educational process; to highlight the relationship between school and family from the perspective of the parents. Results. Sample consisting of 38761 representative parents for the population of Constanta county was obtained randomized; we used a questionnaire for parents interpreted by practitioners and representatives County School Inspectorate of Constanta, in collaboration with a team of psychologists from County Center of Resources and Educational Assistance of Constanta, after its' application in schools, supported by managers, psychologists and teachers. Statistical data obtained revealed a high level of parental satisfaction about the educational process in schools (pre-primary cycle, primary, secondary and high school) especially about the educational offers and management, as well as the involvement of teachers and the directors of the school units and the importance of recommendations of the parents to streamline their activity. The partnership school - family can form effective team to initiate projects that invite parents to work together with teachers and to promote school activities in local community. Conclusions. This important study identify the perception of beneficiaries of educational services in relation to all aspects monitored and may be an important step in development of a functional relationship student - family - school. [ABSTRACT FROM AUTHOR]

Semiconductor nanocrystals (quantum dots QDs) are known to show desirable optical characteristics like photostability, fluorescence properties, broad absorption spectra and size-dependent narrow emission spectra, leading to major advances in medical diagnostics, targeted therapeutics, microbiology, molecular and cell biology. In this paper we present our results concerning the interaction of CdSe/ZnS core-shell quantum dots (490 nm; 520 nm; 560 nm and 600 nm) with long chain amine capping agent with hydrocarbon-oxidizing bacteria. The biological samples used are natural populations of cyanobacteria and heterotrophic bacteria from the Black Sea. Quantum dots that emit at 520 nm and 600 nm allow the visualization of the microorganisms, but the experimental values obtained are close to the number of dead cells (PI positive) and not the total number of cells (DAPI), suggesting that QD label almost exclusively dead cells. [ABSTRACT FROM AUTHOR]