Perspectives of High School Orchestra Teachers in Urban and Suburban Settings In Using Social-Emotional Learning Techniques

A need exists for more literature concerning high school orchestras in an urban setting versus a suburban neighborhood and the different styles of social-emotional learning strategies implemented in each. Universities and other professional development specialists now teach teachers social-emotional learning procedures and processes. However, these specialists often must provide orchestra directors with more specific skills. There also should be more differentiated instruction for high school orchestras in an urban setting versus what school corporations require of teachers in a suburban-specific area. Teachers must identify the demographics of where and to whom they teach and tailor lesson plans and social-emotional techniques to these particular environments. The review of the literature discusses this topic. A questionnaire surveyed teachers, asking them if they were instructed in the demographic area they were teaching from a social-emotional learning perspective. It also asked them to explain what they did to be successful. The third part of this study demonstrates how the literature review contributes to this topic based on the current environment for high school orchestra teachers. The survey also required orchestra teachers to respond to questions about strategies and techniques they employed to be successful

ECONOMIC ANALYSIS OF FRESHWATER FISH PRODUCTION IN THE REPUBLIC OF SERBIA

The authors present the basic characteristics of the fish production in the Republic of Serbia. In the case of the fishpond "OZZ Despotovo", in the municipality of Bačka Palanka, the main economic indicators achieved in the production of freshwater fish (carp, grass carp, silver carp, catfish) are analyzed. The observed production requires very high investment per unit area (€ 4,381.39 ha-1). Despite significant investment, achieved economic results are relatively modest (the contribution margin € 892.15 ha-1; the cost-effectiveness ratio 1.09; the profit rate 8.10%). System support of country in the modernization of existing fishponds and raising the new ones, it can significantly contribute to the improvement of production and economic results in the fish production on the territory of the Republic of Serbia

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International audienc

Generic flow profiles induced by a beating cilium

We describe a multipole expansion for the low Reynolds number fluid flows generated by a localized source embedded in a plane with a no-slip boundary condition. It contains 3 independent terms that fall quadratically with the distance and 6 terms that fall with the third power. Within this framework we discuss the flows induced by a beating cilium described in different ways: a small particle circling on an elliptical trajectory, a thin rod and a general ciliary beating pattern. We identify the flow modes present based on the symmetry properties of the ciliary beat.Comment: 12 pages, 6 figures, to appear in EPJ

The cooperative behaviour of antimicrobial peptides in model membranes

A systematic analysis of the hypothesis of the antimicrobial peptides' (AMPs) cooperative action is performed by means of full atomistic molecular dynamics simulations accompanied by circular dichroism experiments. Several AMPs from the aurein family (2.5,2.6, 3.1), have a similar sequence in the first ten amino acids, are investigated in different environments including aqueous solution, trifluoroethanol (TFE), palmitoyloleoylphosphatidylethanolamine (POPE), and palmitoyloleoylphosphatidylglycerol (POPG) lipid bilayers. It is found that the cooperative effect is stronger in aqueous solution and weaker in TFE. Moreover, in the presence of membranes, the cooperative effect plays an important role in the peptide/lipid bilayer interaction. The action of AMPs is a competition of the hydrophobic interactions between the side chains of the peptides and the hydrophobic region of lipid molecules, as well as the intra peptide interaction. The aureins 2.5-COOH and 2.6-COOH form a hydrophobic aggregate to minimize the interaction between the hydrophobic group and the water. Once that the peptides reach the water/lipid interface the hydrophobic aggregate becomes smaller and the peptides start to penetrate into the membrane. In contrast, aurein 3.1-COOH forms only a transient aggregate which disintegrates once the peptides reached the membrane, and it shows no cooperativity in membrane penetratio

Multi-year interlaboratory exercises for the analysis of illicit drugs and metabolites in wastewater:development of a quality control system

Thirty-seven laboratories from 25 countries present the development of an inter-laboratory testing scheme for the analysis of seven illicit drug residues in standard solutions, tap- and wastewater. Almost 10 000 concentration values were evaluated: triplicates of up to five samples and 26 laboratories per year. The setup was substantially improved with experiences gained across the six repetitions (e.g. matrix type, sample conditions, spiking levels). From this, (pre-)analytical issues (e.g. pH adjustment, filtration) were revealed for specific analytes which resulted in formulation of best-practice protocols for inter-laboratory setup and analytical procedures. The results illustrate the effectiveness of the inter-laboratory setup to assess laboratory performance in the framework of wastewater-based epidemiology. The exercise proved that measurements of laboratories were of high quality (>80% satisfactory results for six out of seven analytes) and that analytical follow-up is important to assist laboratories in improving robustness of wastewater-based epidemiology results