349 research outputs found
A Lei 10.639/03 e sua aplica??o na amplia??o da jornada escolar
O presente trabalho tem como inten??o verificar atrav?s de uma pesquisa de campo como se d? o cumprimento da Lei 10.639/03, que estabelece em car?ter obrigat?rio, o ensino da Hist?ria da ?frica e da Cultura Afro-Brasileira no sistema de ensino formal brasileiro, especificamente, na amplia??o da jornada escolar. Para que o trabalho pudesse ser realizado, buscamos na primeira parte, retomar a trajet?ria do Movimento Negro e sua luta pelo direito ? inclus?o da popula??o negra no sistema de ensino brasileiro, incluindo nesta abordagem a necessidade de implanta??o das a??es afirmativas no Brasil, a quest?o da democracia racial e o direito estabelecido pelo programa de cotas. Na segunda fase da pesquisa, nosso exerc?cio foi o de observar a concep??o de educa??o integral proposta pela filosofia pragm?tica, buscando perceber como a escola brasileira se comportou diante da influ?ncia do movimento da Escola Nova, e qual a proposta de educa??o integral ? apresentada pelo programa Mais Educa??o. Na terceira e ?ltima etapa, verificamos como a Hist?ria da ?frica e a Cultura Afro-Brasileira ? abordada no Manual Operacional de Educa??o Integral, que baliza os conte?dos a serem trabalhados na amplia??o da jornada escolar, e relatamos o estudo de caso que buscou descobrir se a Lei 10.639/03 est? sendo cumprida na educa??o integral
Seed germination characteristics of Phillyrea angustifolia L. and P. latifolia L. (Oleaceae), two Mediterranean shrub species having lignified endocarp
The aim of this study was to determine the germination characteristics of Phillyrea angustifolia L. and P. latifolia L. seeds in order to develop an optimized propagation protocol for Phillyrea species. Seeds of P. angustifolia and P. latifolia were collected from wild plants growing in Cáceres province (CW Spain) and Andalucía (S Spain), respectively. Percentage of water uptake for P. latifolia seeds was calculated. Seeds with and without endocarp were germinated at different constant and alternating temperatures. Seeds without endocarp were soaked in distilled water or gibberellic acid, and then set to germinate. Seeds with endocarp of both species were stratified at 5 ºC for 30 or 90 days and then the endocarp was completely removed from the seeds before they were sowed. Chemical scarification with sulfuric acid and mechanical scarification were tested on P. angustifolia seeds with endocarp. Phillyrea endocarp was permeable to water, since Phillyrea seeds with endocarp imbibed water, but water uptake was faster when the endocarp was removed. Moreover, the encodarp could interfere mechanically in the emergence of the radicle, since seed germination of Phillyrea species was promoted by the complete removal of the lignified endocarp surrounding each seed. Optimal germination temperature for both species was 15 ºC, and lower temperatures produced secondary dormancy. Soaking in distilled water or gibberellic acid did not significantly enhance seed germination. Cold stratification and chemical scarification treatments were detrimental for seed germination. Keywords cold stratification, Phillyrea species, treatments before sowing, seed germination, seed scarification, lignified endocarp
Psicologia, antropologia e conflitos relacionais nas organizações
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de ProduçãoEsta pesquisa tem por objetivo analisar a compreensão de autores do final do século XX quanto aos impasses na gestão da administração, mais precisamente nas relações humanas e do indivíduo nas organizações. Ressalta-se o avanço de Chanlat relativamente a outros autores, no que concerne à identificação da necessidade de uma nova antropologia para as organizações que permite resgatar o ser humano que, na expressão de Chanlat, permanec
Conductivity test in seeds of different passion flower species
The objective of this work was to evaluate the use of the conductivity test as a means of predicting seed viability in seven Passiflora species: P. alata, P. cincinnata, P. edulis f. edulis, P. edulis f. flavicarpa, P. morifolia, P. mucronata, and P. nitida. Conductivity of non?desiccated (control), desiccated, and non?desiccated cryopreserved seeds was determined and related to their germination percentage. The obtained results suggest that the electrical conductivity test has potential as a germination predictor for P. edulis f. flavicarpa seed lots, but not for the other tested species. Index terms: Passiflora, seed cryopreservation, seed desiccation, seed viability
Teste de condutividade em sementes de diferentes espécies de maracujá
The objective of this work was to evaluate the use of the conductivity test as a means of predicting seed viability in seven Passiflora species: P. alata, P. cincinnata, P. edulis f. edulis, P. edulis f. flavicarpa, P. morifolia, P. mucronata, and P. nitida. Conductivity of non‑desiccated (control), desiccated, and non‑desiccated cryopreserved seeds was determined and related to their germination percentage. The obtained results suggest that the electrical conductivity test has potential as a germination predictor for P. edulis f. flavicarpa seed lots, but not for the other tested species.O objetivo deste trabalho foi avaliar o uso do teste de condutividade como meio de predição da viabilidade de sementes de sete espécies de Passiflora: P. alata, P. cincinnata, P. edulis f. edulis, P. edulis f. flavicarpa, P. morifolia, P. mucronata e P. nitida. A condutividade de sementes não dessecadas (controle), dessecadas e não dessecadas criopreservadas foi determinada e relacionada ao seu percentual de germinação. Os resultados obtidos sugerem que o teste de condutividade elétrica tem potencial como preditor de germinação para os lotes de sementes de P. edulis f. flavicarpa, mas não para os das outras espécies testadas
Facebook addiction and emerging adults: the influence of sociodemographic variables, family communication, and differentiation of self
The growing use of social networking sites places them
among the most popular online activities. In particular,
Facebook is gaining increasing numbers of users. For some
individuals, such activity can develop into addictive online
behaviour. The main objective of this study was to assess
the influence of sociodemographic (e.g., gender, age), indi vidual (e.g., differentiation of self), and family (e.g., family
communication) factors on Facebook addiction in Portu guese emerging adults aged between 18 and 30 years. The
study included 403 participants, who followed a protocol in
which several instruments were administered (e.g., COMPA,
BSI, DSI-R, and BFAS). The results showed higher Face book use and a higher risk of addiction in individuals with
the following characteristics: (1) female gender; (2) aged
between 24 and 30 years; (3) lower differentiation of self; (4)
physically or emotionally distanced from significant others
(emotional cut-off); and (5) negative communication patterns
with their parents. An association was also found between
other psychopathological indicators (e.g., depression,
anxiety, and interpersonal sensitivity) and Facebook use.
Thus, the present study contributes to the field of research
on online addictions and has implications for prevention and
clinical intervention.El uso creciente de las redes sociales los ubica entre las
actividades on-line más populares. Facebook, en particular,
está ganando más y más usuarios y para algunas personas
puede convertirse en un comportamiento adictivo on-line.
El objetivo principal de este estudio fue evaluar la influen cia de factores sociodemográficos (e.g., género, edad),
individuales (e.g., diferenciación del self) y familiares (e.g.,
comunicación familiar) en la adicción a Facebook, dentro de
la población portuguesa de adultos emergentes (edad entre
18-30). Para este propósito, se recolectó una muestra de
403 participantes y se aplicó un protocolo con varios ins trumentos (por ejemplo, COMPA, BSI, DSI-R, BFAS). Los
resultados mostraron que las personas: (1) mujeres, (2) con
edades comprendidas entre 24 y 30 años, (3) con menor
diferenciación del self, (4) que se distancian física o emocio nalmente de otras personas importantes (corte emocional) y
( 5) quienes usan un patrón negativo de comunicación con
sus padres muestran un mayor uso de Facebook y un mayor
riesgo de adicción. También se analizaron otros indicado res psicopatológicos (por ejemplo, depresión, ansiedad y
sensibilidad interpersonal), revelando que están asociados
con el adicción a Facebook. Por lo tanto, el presente estudio
contribuye al campo de la investigación sobre las adicciones
a internet y tiene repercusiones en la prevención y la inter vención clínica.info:eu-repo/semantics/publishedVersio
Transcriptional and Posttranscriptional Regulations of the HLA-G
HLA-G has a relevant role in immune response regulation. The overall structure of the HLA-G coding region has been maintained during the evolution process, in which most of its variable sites are synonymous mutations or coincide with introns, preserving major functional HLA-G properties. The HLA-G promoter region is different from the classical class I promoters, mainly because (i) it lacks regulatory responsive elements for IFN-γ and NF-κB, (ii) the proximal promoter region (within 200 bases from the first translated ATG) does not mediate transactivation by the principal HLA class I transactivation mechanisms, and (iii) the presence of identified alternative regulatory elements (heat shock, progesterone and hypoxia-responsive elements) and unidentified responsive elements for IL-10, glucocorticoids, and other transcription factors is evident. At least three variable sites in the 3′ untranslated region have been studied that may influence HLA-G expression by modifying mRNA stability or microRNA binding sites, including the 14-base pair insertion/deletion, +3142C/G and +3187A/G polymorphisms. Other polymorphic sites have been described, but there are no functional studies on them. The HLA-G coding region polymorphisms might influence isoform production and at least two null alleles with premature stop codons have been described. We reviewed the structure of the HLA-G promoter region and its implication in transcriptional gene control, the structure of the HLA-G 3′UTR and the major actors of the posttranscriptional gene control, and, finally, the presence of regulatory elements in the coding region
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