Utilização de extrato de própolis verde no resfriamento de sêmen equino

Seminal cooling aims to prolong spermatic lifespan and fertilizing capacity due to reduction in energy metabolism of spermatozoa, providing enough period for transportation from the stallion to the mare. Cooling process can result in ultraestructural, biochemical and functional alterations to spermatozoa. The aim of this study was to evaluate the effect of green propolis hydroalcoholic extract (GPHE) added into equine semen extender and stored at 5ºC. For that, semen was collected from five stallions (Crioulo and Quarter horse) in four opportunities (n=20). These ejaculates were submitted to the following treatments: control group (skim milk glucose semen extender) and groups with the addition of green propolis extract in different concentrations (2,5μl/mL; 5μl/mL; 7,5μl/mL; 10μl/mL). Seminal analyses included motility, mitochondrial functionality, integrity of plasma membrane, DNA and acrossome, being used ejaculates with ≥70% of intact cells. Evaluation was performed at 0; 30; 60; 120; 180; 240; 300; 360 and 1440 minutes during cooled storage at 5ºC. Seminal parameters declined according to storage time in all treatments (P<0.05). Sperm motility reached 0% in 360 minutes in the groups with propolis. The addition of green propolis extract into the semen extender maintained structural characteristics of stallion sperm cell, however it was detrimental no functional characteristics.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESO resfriamento seminal tem como intuito o prolongamento da viabilidade espermática e capacidade fecundante pela redução no metabolismo energético dos espermatozoides, proporcionando período hábil para transporte do sêmen do garanhão até a égua. O processo de resfriamento pode resultar em alterações ultraestruturais, bioquímicas e funcionais na célula espermática. O objetivo deste experimento foi avaliar o efeito do extrato de própolis verde adicionado ao diluente para resfriamento de sêmen equino a 5ºC. Para isso, foram coletados 4 ejaculados de 5 garanhões da raça Crioula e Quarto de Milha (n=20). Estes ejaculados foram submetidos aos seguintes tratamentos: controle (diluente a base de leite desnatado) e grupos com adição de extrato de própolis verde em diferentes concentrações (2,5μl/mL; 5μl/mL; 7,5μl/mL; 10μl/mL). As análises espermáticas incluíram motilidade, funcionalidade mitocondrial, integridade de membrana plasmática, DNA e acrossoma, sendo utilizados ejaculados contendo ≥70% de células íntegras ás 0h. As avaliações foram realizadas ás 0; 30; 60; 120; 180; 240; 300; 360 e 1440 minutos durante o resfriamento a 5ºC. Os parâmetros seminais diminuíram de acordo com o aumento do tempo em resfriamento em todos tratamentos (P<0,05). A motilidade espermática atingiu 0% em 360 minutos nos tratamentos com própolis. A adição de extrato de própolis verde ao diluente de resfriamento seminal manteve as características estruturais da célula espermática equina, no entanto prejudicou as caraterísticas funcionais

Carbon and nitrogen dynamics from slow pools of soil organic matter in a temperate forest: pyrogenic organic matter and and root litter

Soil organic matter (SOM) is the dominant reservoir of organic carbon (OC) in terrestrial ecosystems, storing approximately three times the size of the C pool in the atmosphere. In temperate forests, a major fraction of the SOM consists of slowly decaying soil organic C (SOC) pools. While slowly cycling C pools constitute a large reservoir of stable C in soils, the dominant environmental factors controlling this C pool remain unresolved. This research investigates two significant, but poorly characterized slowly decaying C pools: fine root litter (\u3c 2mm) and thermally altered plant biomass (pyrogenic organic matter, PyOM). Specifically, I used compound-specific stable isotope analysis (13C and 15N) as my main methodological approach to examine the (1) decomposition of root litter and PyOM in temperate forest soils, and (2) the factors (soil type, nitrogen addition, and SOM) that affected the stability of these two SOC pools. This was accomplished by integrating the results of: a 180-d incubation study on PyOM decomposition, a study on the molecular composition and physicochemical structure of PyOM, δ13C measurements of PyOM molecular markers (13C-benzene polycarboxylic acids) in soils, measurements of atmospheric PyOM-C deposition, and a 2-yr field study on root litter decay. PyOM-C at 450oC had a centennial mean residence time (MRT) in temperate forest soils, and the mineralization of PyOM-N was affected by reactive mineral surfaces. Future tracing experiment studies will greatly benefit from the use of 13C-BPCA approach to quantify PyOM turnover rates in soils. In northern Michigan, PyOM-C deposition fluxes from the atmosphere to soils were low, but provided background data relevant for future assessments of atmospheric PyOM-C concentration. Lastly, maple roots decomposed faster than those reported by previous studies in temperate ecosystems, suggesting that root litter C is not a stable SOM pool in northern temperate forest soils. To improve long-term predictions of the impact of climate change on SOC fluxes, ecosystem scale C models should consider root detritus as a fast-cycling C pool in northern forest soils, incorporate the effect of soil mineral assemblage on the stability of SOM, and no longer assume that PyOM has a millennial MRT in soils

Planejamento financeiro e qualidade de vida: uma pesquisa survey com estudantes de ciências contábeis da UFSC. 2012

TCC (Graduação) - Universidade Federal de Santa Catarina. Centro Socioeconômico. Curso de Ciências ContábeisA preocupação em lidar com o dinheiro sempre foi - e continua sendo - tema importante, senão pela sua escassez, pela falta de planejamento financeiro pessoal satisfatório. Outro obstáculo encontrado é como fazê-lo corretamente e para que seja possível obter satisfação das necessidades de maneira consciente e equilibrada, obedecendo em todo o tempo aos limites de renda familiar. Este estudo objetivou identificar a relação entre o planejamento financeiro e a percepção de qualidade de vida dos alunos de ciências contábeis do período noturno da UFSC. A realização deste estudo justifica-se pela relevância do tema, visto que se compreende que o orçamento é essencial para o planejamento e o controle das finanças pessoais, bem como pela escassez de literatura sobre o assunto. A metodologia deste estudo caracteriza-se como descritiva, no sentido de destacar a qualidade de vida em função, também, da organização econômico-financeira. Utilizaram-se questionário e análises estatísticas, com o uso do software aplicativo Excel 2007, para alcançar o objetivo do trabalho. Os resultados obtidos com a amostra, diferentemente das obras anteriores pesquisadas, não indicaram claramente a existência de relação entre o planejamento financeiro e a qualidade de vida. Dentro dos objetivos específicos propostos pode-se concluir que a qualidade de vida dos alunos de ciências contábeis, do período noturno da UFSC, não está diretamente relacionada à elaboração do orçamento de acordo com suas respostas. Os resultados obtidos com a análise dos dados, na amostra proposta, não possibilitam afirmar, como feito em trabalhos anteriores, que existe relação direta entre o planejamento financeiro e a percepção de qualidade de vida, pelo menos entre a população pesquisada. Por mais que a literatura mostre uma realidade diferente em pesquisas anteriores, a percepção de qualidade de vida dos entrevistados não mostrou variação relevante entre os que têm alguma forma de planejamento e os que não têm

School rankings in Portugal : exploring some of their effects

No presente artigo reflectimos sobre alguns dos efeitos da publicação dos rankings na acção organizacional dos actores educativos da escola pública, nomeadamente em Portugal. Tendo em consideração que os efeitos dos rankings podem não ser lineares nem uniformes (PINTO, 2009), procuramos problematizar se os referidos rankings induzem efeitos de quase-mercado educacional. Para o desenvolvimento desta discussão, tomamos por base um estudo por nós realizado (no ano lectivo 2006/2007), junto de professores, dirigentes escolares, alunos e pais de uma escola localizada numa cidade do Douro Litoral. O quadro teórico-conceptual que sustenta a interpretação dos dados obtidos provém de diferentes abordagens conceptuais, embora de forma articulada. Por um lado, mobiliza-se conceitos da sociologia da educação crítica e, por outro, da sociologia das organizações educativas. A partir daqui, podemos afirmar que os rankings, ainda que não de modo exclusivo, contribuem para a emergência de processos de selecção social e académica dos alunos e de concorrência entre escolas; neste último caso, ganha expressão situações que classificamos como estratégias de promoção da escola e de fabricações (BALL, 2002). Práticas essas que enquadramos na imagem de escola enquanto organização de tipo organicista.In this article we have taken into account some of the effects of the publishing of the rankings on the organizational action of the public school educational actors, namely in Portugal. Bearing in mind the fact that the effects of the rankings may neither be lineal nor uniform (PINTO, 2009), we attempt to question whether the referred rankings produce educational quasi-market effects. To further this discussion, we based ourselves on a study (during the school year 2006/2007) conducted by us on teachers, school administration, students and parents in a school in a city belonging to the area of Douro Litoral. The theoretical-conceptual frame that supports the interpretation of the gathered data comes from different conceptual points of view, although in an articulated form. Both sociological concepts of the critical education and sociological concepts of Sociology of the educational institutions are called upon. Based on the interpretation of the gathered data, we came to a conclusion that, although not exclusively, the rankings contribute to the emergence of processes of social and academic selection of students and competition among schools; as for the latter case, situations stand out that we classify as school image promotion and fabrication (BALL, 2002). We encase those behaviours in the school image while an institution of organicist type

Neoliberal logics and new roles of parents in public schools: reflexions based on some investigations

In different parts of the world the reforms that are labeled as neoliberal have stimulated a redefinition of the parents' roles in the field of public education. Within this context, among the different steps adopted, we should like to highlight the publication of school rankings according to students' grades in national exams, which are designated as ranking of schools and parents' free choice of school. In theory, this redefinition of the role of parents, as consumers, raises new challenges and opportunities, but, simultaneously, it might result in a new form of reproduction of social and cultural inequalities that are present across the public school, as several authors have alerted (Ball, 1995). With this situation in mind, we seek, in this communication, to realize a review of works that look into empirical investigation on the new power that is bestowed on parents. Specifically, we reflect upon the issue of whether the results obtained point to a strengthening of the inequalities between parents of different social and cultural groups in their exercise of the new power that is attributed to them in their participation in the public school. To realize this work, we seek to develop an analysis of the content of several investigations carried out in different contexts, in order to identify the following categories: scope of the investigation, groups of parents involved in the investigation, techniques of information gathering, synthesis of the comparison between the results of these works, to obtain a global overview of the (in)ability of certain groups of parents to exercise their new power.info:eu-repo/semantics/acceptedVersio

Feelings evidenced by the parents and family members before the cancer diagnosis in the child

Objective: To reveal the feelings evidenced by the family members of hospitalized children before the cancer diagnosis and highlight the main capabilities of the Nursing in assisting the confrontation of the disease. Method: It is a descriptive, exploratory and bibliographic research, with a qualitative approach, which was conducted through searches the in VHL, with full papers published in Portuguese in the last eight years. The used descriptors were: Child; Cancer; Diagnosis; Relationships between nurse and patient. 12 bibliographies were selected. Results: Three thematic categories have emerged: The imbalance in the social and family coexistence after the cancer diagnosis; Adaptation tools and coping strategies; and Holistic and humanized care from the nursing staff. Conclusion: The cancer requires the complete change of the life routine of the family, by bringing anguishes to the main caregiver, since it neglects the other members when taking care of the sick relative. The cancer drives the family members to feelings of fear and anxiety, also makes the faith in God and the religious belief of each of the members are maximized, thus creating greater hopes in relation to the healing