Analysis on the vulnerabilities of middle school students in Mehedinți county

This research is part of the “Sustainable social and educational integration through sports activities” project, which aims to increase the school attendance rate and the transit rate to ISCED level 3. Mehedinți county presents a lot of vulnerabilities for middle school students. The purpose of the current study is to emphasise the structure of vulnerabilities for the middle school population from this Romanian county. The identified vulnerabilities were structured in eight categories, namely: Roma students, students with one or both parents working abroad, remigrated students, students from disorganised or single-parent families, students raised in foster care, students who are children of immigrants or refugees in Romania, students with a degree of disability and students at risk of early school dropout. This applied research was conducted over a period of 2 years. The participants are 170 students (93 boys and 77 girls) from two schools in rural areas, who have a moderate ISCED level. The methods used in this study are: literature review, survey, mathematical and statistical method, graphical method. The research results identify the structure of vulnerabilities affecting the middle school population in Mehedinți county. The research provides a deep insight into the social challenges faced by the lower secondary population in rural areas.

The influence of leadership and motivation work to discipline work teachers in high school

This study aims to 1 to test the leadership of 1 ) teachers work discipline , 2 ) influence motivation teachers tenure to teachers work discipline , and 3 ) influence leadership and motivation of teachers work in togher teachers work discipline. This study using quantitative methods derived from sources both primary and secondary. Population and a working and motivation of teachers work discipline .The study is done in high school patra independent 01 Palembang .The collection of data using the survey with samples from 36 teachers. The data that has been collected analyzed using descriptive analysis and analysis of multiple regression. The result showed that : (1) is significant influence among schools to head leadership style discipline teacher in high school patra independent 01 Palembang; (2) any impact of the significant work to discipline the teacher in high school patra independent 01 palembang; (3) Significant influence is of a style of leadership

The Effects of Photosensitizing Dyes Fagopyrin and Hypericin on Planktonic Growth and Multicellular Life in Budding Yeast

Naphthodianthrones such as fagopyrin and hypericin found mainly in buckwheat (Fagopyrum spp.) and St. John’s wort (SJW) (Hypericum perforatum L.) are natural photosensitizers inside the cell. The effect of photosensitizers was studied under dark conditions on growth, morphogenesis and induction of death in Saccharomyces cerevisiae. Fagopyrin and hypericin induced a biphasic and triphasic dose response in cellular growth, respectively, over a 10-fold concentration change. In fagopyrin-treated cells, disruptions in the normal cell cycle progression were evident by microscopy. DAPI staining revealed several cells that underwent premature mitosis without budding, a striking morphological abnormality. Flow Cytometric (FC) analysis using a concentration of 100 µM showed reduced cell viability by 41% in fagopyrin-treated cells and by 15% in hypericin-treated cells. FC revealed the development of a secondary population of G1 cells in photosensitizer-treated cultures characterized by small size and dense structures. Further, we show that fagopyrin and the closely related hypericin altered the shape and the associated fluorescence of biofilm-like structures. Colonies grown on solid medium containing photosensitizer had restricted growth, while cell-to-cell adherence within the colony was also affected. In conclusion, the photosensitizers under dark conditions affected culture growth, caused toxicity, and disrupted multicellular growth, albeit with different efficiencies.

ADOPTION AND ACCESS OF E-LIBRARY SERVICES IN UNIVERSITY LIBRARIES OF NORTH WEST ZONE OF NIGERIA

This paper examined the adoption and access of E-library services in University library of North west zone of Nigeria. Survey research method was adopted to carry out the study using descriptive research methodology. The population used under this study comprised all the state federal, state and private universities in North–West Geo-political zone of Nigeria, comprises of seventeen (17) studied universities, the population considered to be subject of the study includes other professional and non-professional staff in the Nigerian university libraries on the position of university librarian circumstantially. The sample size depends on the nature of the research of the study. It is however proposed to have a sample of seventeen (17) universities, therefore the number of the universities is manageable, and therefore no sampling is required. The instruments used data collection is questionnaire. Stratified sampling technique was used in selecting the secondary population of the study. Data was also analyzed using descriptive analysis using frequency tables and percentages. Stratified sampling technique was used in selecting the secondary population of the study. The administration of the questionnaire was carried out by the co researchers and assisted by three (3) research assistants. The study found that, adoption and accessing of the electronic library services and resources in Nigerian university libraries of North-west Geo-political Zone are basically for the purpose of effective, reliable, and adequate library information dissemination. The study has also identified that some universities have for long adopted and established the electronic unit earlier than other university libraries in the North-west Geo-political Zone of Nigeria. Consequent to that, it has been identified that all the sampled university libraries have established the electronic unit for the purpose of information dissemination via electronic devices for rapid and speedy information services. The study has further revealed that majority of the electronic unit or managers of the electronic section are specialists in the area of library and information science. The study recommends that encouragement from the government will give enough room and opportunity to provide adequate transformation of information electronically in Nigerian University libraries of north-west geo-political zone. There is the need for the university libraries to concretely form a consortium for the formation of unified electronic services and electronic resource sharing e.g. Universities library consortium, Hinary, Lefel, etc. One of the greatest challenges or threats to the adoption and accessing or sustainability of using the electronic resources in Nigeria is the issue of power supply. Efforts should be made by the authority concern to provide alternative in case of power failure during the transformation services. The alternative probably might be the provision of solar power or standby generator in order to alleviate the challenge of inadequacy or none supply of electricity power supply. University libraries being an academic institution library should try by all means to promote their electronic resources and services for the university community members to be aware of their availability and existence. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0770/a.php" alt="Hit counter" /></p>

Reactive Nanopattern in a Triple Structured Bio-Inspired Honeycomb Film as a Clickable Platform

A hierarchically structured platform was obtained from spontaneous self-assembly of a poly(styrene)-<i>b</i>-poly(vinylbenzylchloride) (PS-<i>b</i>-PVBC) block copolymer (BCP) during breath figure (BF) templating. The BF process using a water/ethanol atmosphere gave a unique double porosity in which hexagonally arranged micron-sized pores were encircled by a secondary population of smaller, nano-sized pores. A third level of structuration was simultaneously introduced between the pores by directed BCP self-assembly to form out-of-the-plane nano-cylinders, offering very rapid bottom-up access to a film with unprecedented triple structure which could be used as a reactive platform for introducing further surface functionality. The surface nano-domains of VBC were exploited as reactive nano-patterns for site-specific chemical functionalization by firstly substituting the exposed chlorine moiety with azide, then “clicking” an alkyne by copper (I) catalyzed azide-alkyne Huisgen cycloaddition (CuAAC). Successful chemical modification was verified by NMR spectroscopy, FTIR spectroscopy, and XPS, with retention of the micro- and nanostructuration confirmed by SEM and AFM respectively. Protonation of the cyclotriazole surface groups triggered a switch in macroscopic behavior from a Cassie-Baxter state to a Wenzel state, highlighting the possibility of producing responsive surfaces with hierarchical structure.

Reactive Nanopattern in a Triple Structured Bio-Inspired Honeycomb Film as a Clickable Platform

A hierarchically structured platform was obtained from spontaneous self-assembly of a poly(styrene)-<i>b</i>-poly(vinylbenzylchloride) (PS-<i>b</i>-PVBC) block copolymer (BCP) during breath figure (BF) templating. The BF process using a water/ethanol atmosphere gave a unique double porosity in which hexagonally arranged micron-sized pores were encircled by a secondary population of smaller, nano-sized pores. A third level of structuration was simultaneously introduced between the pores by directed BCP self-assembly to form out-of-the-plane nano-cylinders, offering very rapid bottom-up access to a film with unprecedented triple structure which could be used as a reactive platform for introducing further surface functionality. The surface nano-domains of VBC were exploited as reactive nano-patterns for site-specific chemical functionalization by firstly substituting the exposed chlorine moiety with azide, then “clicking” an alkyne by copper (I) catalyzed azide-alkyne Huisgen cycloaddition (CuAAC). Successful chemical modification was verified by NMR spectroscopy, FTIR spectroscopy, and XPS, with retention of the micro- and nanostructuration confirmed by SEM and AFM respectively. Protonation of the cyclotriazole surface groups triggered a switch in macroscopic behavior from a Cassie-Baxter state to a Wenzel state, highlighting the possibility of producing responsive surfaces with hierarchical structure.

Morphometric characteristics of sycamore maple (Acer pseudoplatanus L.) fruits in Novi Sad urban populations

This paper shows the results of the analysis of the fruit morphometric characteristics of 29 trees of sycamore maple (Acer pseudoplatanus L.) and red - leaf sycamore maple (Acer pseudoplatanus ??tropurpureum? Sp?th.) in Novi Sad area. Based on the test trees, it can be concluded that the analyzed secondary population of sycamore maple has a high level of intra - populations variability, based on different degrees of variability of measured parameters and statistically significant differences of all analyzed parameters within the analysed genotypes. The results indicate that there are certain differences between fruit of sycamore maple and its red - leaf variety. Given that there is no statistically significant difference between sites and different urban spaces, it can be concluded that stress factors caused by a high degree of urbanity do not affect the morphometric characteristics of fruits in the analyzed test trees. Testing the symmetry of fruits indicates a high level of genetic variability within the analyzed population.