170 research outputs found

    INCLUSIVE PHYSICAL EDUCATION IN TIMES OF EDUCATIONAL URGENCY: TEACHERS' PERSPECTIVE IN THE VENETO REGION

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    Physical Education (PE) represents an important global-growth opportunity for pupils enhancing their physical, cognitive, emotional, and relational well-being. At the same time, the heterogeneity of the classrooms implies that the promotion of inclusive PE is a complex task, and students with special educational needs (SEN) are, more than others, at risk of marginalization. This aspect is particularly relevant in this period of restrictions due to the COVID-19 pandemic in which PE teachers must redesign their activities and the alliance with other educational figures has become an educational urgency. The aim of this study was twofold: on the one hand, to understand if and to what extent students with SEN participate in PE and how PE teachers collaborate with colleagues, other professionals and families to develop personalized and flexible teaching; on the other hand, to investigate any differences in the use of teaching styles in PE before and during the period of restrictions caused by the COVID-19 pandemic. In conclusion, the perspective of a voluntary sample of 32 PE teachers from the Veneto Region collected through a self-reported questionnaire is presented

    Quantitative analysis of fentanyl, several analogues and metabolites in urine by parallel artificial liquid membrane extraction and liquid chromatography tandem mass spectrometry analysis

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    The rapid introduction of new psychoactive substances (NPS) has definitively changed the drug market. Among the several NPS that were identified in the last decades, fentanyl and its analogues deserve special attention. These are synthetic opioids with high potency and are associated with increasing number of deaths; for this reason, forensic toxicologists are paying close attention to these analytes and sensitive analytical methods for their detection in biological samples of drug users are needed. The aim of this study was the development of a LC–MS/MS method for the determination of fentanyl, 23 analogues and metabolites in urine by exploiting parallel artificial liquid membrane extraction (PALME). This technique was shown to be particularly suitable for fentanyl extraction and allowed to obtain a high enrichment factor by using a few microliters of organic solvent (1-octanol) immobilized into a polyvinylidene fluoride (PVDF) membrane. The extraction was carried out on a 96 well plate providing high laboratory throughput. The applied strategy allowed to measure concentrations ranging from 0.1 ng mL − 1 for fentanyl and most analogues to 5 ng mL − 1 for metabolites, by using an entry level mass spectrometer. Because of the different concentration levels generally found in real samples, linearity was studied in different ranges i.e. LOQ to 50 ng mL − 1 for parent drugs and LOQ to 200 ng mL − 1 for metabolites. All the validation parameters were found within the imposed limits, and notably matrix effect was not significant for all the analytes, showing the selectivity achieved by PALME extraction

    Barriere all’attività fisica di giovani adulti con disabilità intellettiva percepite dai loro genitori e allenatori

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    Physical activity (PA) is essential for promoting well-being, health, and positive social relations. Nevertheless, in industrialized countries, high levels of physical inactivity are reported, with higherlevels in people with disabilities. People with intellectual disability (ID) are characterized by particularly high inactivity rates and have various barriers to regularly participating in PA. The aim ofthe present research was to explore the barriers to PA of young adults with ID perceived by their parents and sports coaches. The cross-sectional study involved 52 parents and 9 coaches, who provided information on 55 young adults with mild or moderate ID, filling two separate questionnaire packages, one for parents and the other for coaches.The main reported barriers were the low number of available PA programs, the prejudice toward the disability, the level of expertise of the sports coaches, and the lack of motivation to PA practice of people with ID.The intervention trajectories are therefore multiple including actions on policies at a general and a local level (PA programs availability and accessibility seem intervention targets), educational actions to promote inclusion and reduce stigma, and programs to support parents and to improve the relational and teaching abilities of coaches

    Interaction between Human NK Cells and Bone Marrow Stromal Cells Induces NK Cell Triggering: Role of NKp30 and NKG2D Receptors

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    Abstract In this study we have analyzed the interaction between in vitro cultured bone marrow stromal cells (BMSC) and NK cells. Ex vivo-isolated NK cells neoexpressed the activation Ag CD69 and released IFN-γ and TNF-α upon binding with BMSC. Production of these proinflammatory cytokines was dependent on ligation of ICAM1 expressed on BMSC and its receptor LFA1 on NK cells. Furthermore, the NKp30, among natural cytotoxicity receptors, appeared to be primarily involved in triggering NK cells upon interaction with BMSC. Unexpectedly, autologous IL-2-activated NK cells killed BMSC. Again, LFA1/ICAM1 interaction plays a key role in NK/BMSC interaction; this interaction is followed by a strong intracellular calcium increase in NK cells. More importantly, NKG2D/MHC-I-related stress-inducible molecule A and/or NKG2D/UL-16 binding protein 3 engagement is responsible for the delivery of a lethal hit. It appears that HLA-I molecules do not protect BMSC from NK cell-mediated injury. Thus, NK cells, activated upon binding with BMSC, may regulate BMSC survival

    Nano-Subsidence Assisted Precise Integration of Patterned Two-Dimensional Materials for High-Performance Photodetector Arrays

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    The spatially precise integration of arrays of micro-patterned two-dimensional (2D) crystals onto three-dimensionally structured Si/SiO2_2 substrates represents an attractive strategy towards the low-cost system-on-chip integration of extended functions in silicon microelectronics. However, the reliable integration of the arrays of 2D materials on non-flat surfaces has thus far proved extremely challenging due to their poor adhesion to underlying substrates as ruled by weak van der Waals interactions. Here we report on a novel fabrication method based on nano-subsidence which enables the precise and reliable integration of the micro-patterned 2D materials/silicon photodiode arrays exhibiting high uniformity. Our devices display peak sensitivity as high as 0.35 A/W and external quantum efficiency (EQE) of ca. 90%, outperforming most commercial photodiodes. The nano-subsidence technique opens a viable path to on-chip integrate 2D crystals onto silicon for beyond-silicon microelectronics.Comment: 41 pages, 5 figures, with S

    Mesoscopic 3D Charge Transport in Solution-Processed Graphene-Based Thin Films: A Multiscale Analysis

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    Graphene and related 2D material (GRM) thin films consist of 3D assembly of billions of 2D nanosheets randomly distributed and interacting via van der Waals forces. Their complexity and the multiscale nature yield a wide variety of electrical characteristics ranging from doped semiconductor to glassy metals depending on the crystalline quality of the nanosheets, their specific structural organization ant the operating temperature. Here, the charge transport (CT) mechanisms are studied that are occurring in GRM thin films near the metal-insulator transition (MIT) highlighting the role of defect density and local arrangement of the nanosheets. Two prototypical nanosheet types are compared, i.e., 2D reduced graphene oxide and few-layer-thick electrochemically exfoliated graphene flakes, forming thin films with comparable composition, morphology and room temperature conductivity, but different defect density and crystallinity. By investigating their structure, morphology, and the dependence of their electrical conductivity on temperature, noise and magnetic-field, a general model is developed describing the multiscale nature of CT in GRM thin films in terms of hopping among mesoscopic bricks, i.e., grains. The results suggest a general approach to describe disordered van der Waals thin films

    Foundation Pattern, Productivity and Colony Success of the Paper Wasp, Polistes versicolor

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    Polistes versicolor (Olivier) (Hymenoptera: Vespidae) colonies are easily found in anthropic environments; however there is little information available on biological, ecological and behavioral interactions of this species under these environmental conditions. The objective of this work was to characterize the foundation pattern, the productivity, and the success of colonies of P. versicolor in anthropic environments. From August 2003 to December 2004, several colonies were studied in the municipal district of Juiz de Fora, Southeastern Brazil. It was possible to determine that before the beginning of nest construction the foundress accomplishes recognition flights in the selected area, and later begins the construction of the peduncle and the first cell. As soon as new cells are built, the hexagonal outlines appear and the peduncle is reinforced. Foundation of nests on gypsum plaster was significantly larger (p < 0.0001; χ2 test) in relation to the other types of substrate, revealing the synantropism of the species. On average, the P. versicolor nest presents 244.2 ± 89.5 (100–493) cells and a medium production of 171.67 ± 109.94 (37–660) adults. Cells that produced six individuals were verified. Usually, new colonies were founded by an association of females, responsible for the success of 51.5%. Although these results enlarge knowledge on the foundation pattern of P. versicolor in anthropic environments, other aspects of the foundation process require further investigation

    Adaptability and stability of mungbean genotypes in the Mid-North of Mato Grosso, Brazil

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    ABSTRACT Evaluation of genotype x environment interactions is essential in plant breeding aimed at adapting crops to new settings. Considering the need for research on the adaptation of mungbean to grain-production regions of Brazil, this study evaluated the agronomic performance, adaptability, and stability of mungbean production in the mid-north of Mato Grosso using different genotypes. Two experiments (with and without fertilizer application) were carried out in Sorriso and Sinop in 2019 and 2020, totaling eight environments. The treatments were 10 mungbean lines and the control cultivar BRSMG Camaleão. In general, significant differences among the treatments were observed in the yield, mass of 100 grains, and value for cultivation. The genotype x environment interactions were significant for yield. On average, the yield was in the range of 734-1305 kg ha-1, the mass of 100 grains was 4.63-6.56 g, and the value for cultivation was 2.08-3.56. Genotypes BRA-08654-1, BRA-000027, BRA-084654-2, and BG3 combined high average yield and mass of 100 grains. These genotypes also showed good adaptability for cultivation in the mid-north of Mato Grosso. The yellow seed-coated genotype BRA-084689 also showed good agronomic performance and adaptability. Genotypes BRA-08654-1, BRA-000027, BRA-084654-2, BRA-084689, and BG3 are promising for further experiments evaluating the value for cultivation and use, the final breeding stage consisting of tests at a national level
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