Student Perceptions of Interactive Whiteboards in a Third Grade Classroom

This qualitative project presents students’ perceptions of interactive whiteboard (IWB) usage in a third grade elementary classroom. The use of the IWB was alternated with the overhead/chalkboard on an ABAB design. The study was based on semistructured interviews of 19 rural, elementary school students. The interview questions focused on the following constructs: benefits, limitations, and suggestions for improvement. The results established that students found the IWB to be interesting, fun, and engaging because it involved multi-media aspects and improved visuals. The study also noted the students’ perceived limitations of the IWB and areas for improvement. The results of this study can be used to inform other educators on possible uses for the IWB in the primary classroom setting

Utilizações do vinte de novembro: como o dia da consciência negra é percebido em sala de aula?

Anais do II Seminário Seminário Estadual PIBID do Paraná: tecendo saberes / organizado por Dulcyene Maria Ribeiro e Catarina Costa Fernandes — Foz do Iguaçu: Unioeste; Unila, 2014O presente trabalho se destina a expor a atividade desenvolvida pelos bolsistas do subprojeto do PIBID de História 1 da UFPR, sob coordenação da Profa. Dra. Karina KosickiBellotti, juntamente com os professores supervisores Alisson Gonçalves e Daniel Nodari, nos colégios Manoel Ribas e Dom Pedro II, respectivamente. Tais atividades, ocorridas em Novembro de 2013, foram designadas com o objetivo de discutir a questão da identidade negra e a ocasião do dia 20 de novembro – dia da Consciência Negra.Ao longo da atividade os bolsistas puderam perceber as dificuldades de cada turma em lidar com o tema e, principalmente, as diferenças de percepção que os alunos de cada escola (que continham perfis sócio-econômicos muito diferentes) apresentaram, mostrando a importância de se problematizar historicamente alguns conceitos que fazem parte do cotidiano dos próprios alunos e que se apresentam de formas diversas na sociedad

The effect of andiroba oil and chitosan concentration on the physical properties of chitosan emulsion film

Chitosan film is used as a dressing to heal burns. The physical and biological properties of the film can be modified by the addition of phytotherapic compounds. This work used the casting -solvent evaporation technique to prepare chitosan film containing andiroba oil (Carapa guianensis) which has anti-inflammatory, antibiotic, and healing properties. The objective of this study was to determine the effect of the concentrations of chitosan and andiroba oil on the physical properties of chitosan films. The emulsion films were evaluated concerning the mechanical properties and fluid handling capacity. Additionally, scanning electron microscopy and thermal analysis were performed. The results showed that the barrier and mechanical properties were affected by the addition of andiroba oil, and these may be modulated as a function of the concentration of oil added to the film. The thermal analysis showed no evidence of chemical interactions between the oil and chitosan.Sao Paulo Research Foundation (FAPESP)Univ Fed Sao Paulo UNIFESP, Inst Ciencias Quim Ambientais & Farmaceut, Lab Biotecnol & Prod Nat BION, Diadema, SP, BrazilUniv Fed Sao Paulo UNIFESP, Inst Ciencias Quim Ambientais & Farmaceut, Lab Biotecnol & Prod Nat BION, Diadema, SP, BrazilFAPESP: 2010/17.721-4Web of Scienc

β-amino alcohols and their respective 2-phenyl-N-alkyl aziridines as potential DNA minor groove binders

It is known that aziridines and nitrogen mustards exert their biological activities, especially in chemotherapy, via DNA alkylation. The studied scaffold, 2-phenyl-1-aziridine, provides a distinct conformation compared to commonly used aziridines, and therefore, leads to a change in high-strained ring reactivity towards biological nucleophiles, such as DNA. The above series of compounds was tested in three breast cell lines: MCF-10, a healthy cell; MCF-7, a hormone responsive cancer cell; and MDA-MB-231, a triple negative breast cancer cell. Both aziridines and their precursors, β-amino alcohols, showed activity towards these cells, and some of the compounds showed higher selectivity index than cisplatin, the drug used as control. When the type of cell death was investigated, the synthesized compounds demonstrated higher apoptosis and lower necrosis rates than cisplatin, and when the mechanism of action was studied, the compounds were shown to interact with DNA via its minor groove instead of alkylation or intercalation

USEFULNESS OF THE GQ DIET IN OVERWEIGHT PATIENTS

The research purpose was to analyze the anthropometric evolution in patients who follow the diet GQ. It was selected to 10 patients in Maracaibo, with average age of 36-62. Standard deviation of 4.85. Subjects were overweight and obesity with provision to lose weight, making them tracked for one year. Indicated a diet called diet GQ. Used to measure the weight lost is an electronic scale, being heavy every seven days and expressing the data of a quarterly basis. Results: the subjects significantly reduced their body weight in addition to stabilize it and keep it at the end of 12 months of study

Desenvolvimento de curativo a base de quitosana e gelatina contendo óleo de copaíba para tratamento de queimados

The importance of skin lesions has suggested studies for obtaining biomaterials in order to reduce healing time, enhance the healing quality and promote patient comfort, especially for the relief of pain. Healing, anti-inflammatory and antibiotic properties can be enhanced by the addition of herbal medicines, like copaiba oil (Copaifera sp.), to the films used as wound dressings. Biopolymers films from chitosan and gelatin have attracted much attention because they are nontoxic, hemostatic, biocompatible, antimicrobial, and they supposedly accelerate the healing process. Emulsified films with several chitosan/gelatin ratios, with or without copaiba oil, were prepared by the simultaneous homogenization of chitosan and gelatin solutions followed by the casting and slow drying on a flat support (Casting technique). Films were characterized by physical-chemical analysis like color parameter, barrier properties, mechanical properties, scanning electron microscopy, infrared spectroscopy, and thermal analysis, besides the biological analysis to ensure the biosafety of dressing like microbial permeation, antimicrobial activity, cytotoxicity and cell adhesion. The results indicated that the film containing the same proportions of the biopolymers (50%:50%) with copaiba oil (0.5%) presented the best physical and in vitro biological properties and that it has the potential to be evaluated in vivo. Concerning the physicochemical properties, it was observed that the films showed barrier and mechanical properties suitable for use as wound dressings. The micrographs obtained by scanning electron microscopy showed that the copaiba oil presented good dispersion in the biopolymers matrix. The thermal analysis, infrared and mechanical properties suggested the formation of a biopolymeric polyelectrolyte complex. The antimicrobial activity of the films was observed in relation to the assessed microorganisms. The results demonstrated the potential anti-microbial properties of the films and it was observed that the test on solid medium was the most effective compared to the assay in a liquid medium, due to interference that occurred when the films were in contact with the culture medium, resulting in higher absorption values. Cytotoxic properties of these films were evaluated showing that they are safe and nontoxic. Cell adhesion tests showed that the cells do not adhere to the film, which is a desirable characteristic for wound dressings.A importância das lesões de pele tem sugerido estudos para a obtenção de biomateriais com a finalidade de reduzir o período e melhorar a qualidade da cicatrização, além de promover o conforto do paciente, sobretudo, pelo alívio da dor. Propriedades cicatrizantes, anti-inflamatórias e antibióticas podem ser potencializadas com a incorporação de fitoterápicos, como óleo de copaíba (Copaifera sp.), em filmes utilizados como curativos em feridas. Filmes biopoliméricos de quitosana e gelatina têm atraído muita atenção por serem atóxicos, hemostáticos, biocompatíveis, antimicrobianos, além de supostamente acelerarem o processo de cicatrização. Filmes emulsionados com diferentes proporções de quitosana e gelatina, contendo ou não óleo de copaíba, foram preparados pela homogeneização simultânea da solução de quitosana/gelatina seguido pelo espalhamento e secagem lenta em um suporte plano (técnica Casting). Os filmes foram caracterizados por análises físico-químicas como parâmetros de cor, propriedades de barreira, propriedades mecânicas, microscopia eletrônica de varredura, espectroscopia de infravermelho e análises térmicas, além de análises biológicas a fim de assegurar a biossegurança do curativo como permeação microbiana, atividade antimicrobiana, citotoxicidade e adesão celular. Os resultados indicaram que o filme contendo as mesmas proporções dos biopolímeros (50%: 50%) com o óleo de copaíba (0,5%) apresentam as melhores propriedades físicas e biológicas in vitro, e que o mesmo tem potencial para ser avaliado in vivo. Quanto às suas propriedades físico-químicas, observou-se que os filmes apresentaram propriedades mecânicas e de barreira compatíveis para a aplicação como curativo. As micrografias obtidas por microscopia eletrônica mostraram que o óleo de copaíba apresentou boa dispersão nas matrizes biopoliméricas. As análises térmicas, de infravermelho e propriedades mecânicas sugeriram a formação de um complexo polieletrolítico entre os biopolímeros. Os resultados demonstraram as potenciais propriedades antimicrobianas dos filmes e observou-se que o ensaio em meio sólido foi o mais eficaz comparado ao ensaio em meio líquido, devido à interferência que os filmes sofreram em contato com o meio de cultura, que resultou em altos valores de absorção. Foram avaliadas as propriedades citotóxicas destes filmes mostrando que os mesmos são seguros e atóxicos. Os testes de adesão celular mostraram que as células não se aderem aos filmes, o que é uma característica desejável para um curativo.Dados abertos - Sucupira - Teses e dissertações (2013 a 2016

MANAGEMENT OF QUALITY OF THE HUMAN TALENT IN THE INTELLIGENT EDUCATIVE ORGANIZATIONS

The purpose of the study was to determine the incidence of human talent in smart commercial technical school educational organizations Robinsoniana "Hermágoras Chávez" in the municipality Cabimas quality management. Theoretically, it is based on input from Ivancevich (2005) among others. The research was descriptive analytic transeccional non-experimental field. Population and sample consisted of 55 coordinators. The technique used to obtain information was observation by survey and as a tool, a questionnaire designed by the author in two versions. The data were processed using descriptive statistics allowing to establish the existence of recognizing that human talent does not develop fully elements and management capacity in the studied variables