Padrões de vegetação ciliar em imagens CBERS e indicações do estado de conservação em Mato Grosso do Sul.

A importância que a vegetação de margem de rios representa para o meio ambiente exercendo funções tais como proteção de mananciais, dos solos e equilíbrio ecológico ao ecossistema faz desta fisionomia um alvo importante a ser conservado. Este trabalho tem por objetivo apresentar padrões de vegetação ciliar em imagens CBERS e indicar seu estado de conservação em Mato Grosso do Sul. Foram utilizadas imagens do sensor CCD do satélite CBERS-2B do ano de 2007 e verificações de campo, sendo coletadas informações em 368 pontos. Resultados exemplificam padrões de imagem para 14 áreas de vegetação ciliar ocupadas por campos úmidos, vegetação arbustiva e vegetação arbórea, além de áreas impactadas por cultivo de arroz, desmatamentos, implantação de pasto exótico, erosão e assoreamento de cursos d?água. De maneira geral, a vegetação ciliar do Estado encontra-se impactada ou ausente na maior parte das áreas observadas.GeoPantanal 2009

Padrões de imagem CBERS da vegetação ciliar no Mato Grosso do Sul.

O Estado do Mato Grosso do Sul é drenado por duas bacias, a do Alto Rio Paraguai e a do Rio Paraná. A vegetação ciliar que acompanha os rios e córregos desse Estado se apresenta nas formas arbórea, arbustiva, e de campo úmido. Segundo Dutra (2005), essas áreas desempenham importantes funções ambientais. Este trabalho tem por objetivo identificar padrões de vegetação ciliar em imagens CBERS no MS de maneira a subsidiar o mapeamento da cobertura vegetal no projeto GeoMS, desenvolvido em parceria com a Embrapa, INPE, UFMS e Imasul.Poster. Trabalho apresentado na V Mostra de Trabalhos de Estagiários e Bolsistas, Campinas, out. 2009

Cardiovascular Responses Induced by Obstructive Apnea Are Enhanced in Hypertensive Rats Due to Enhanced Chemoreceptor Responsivity

Spontaneously hypertensive rats (SHR), like patients with sleep apnea, have hypertension, increased sympathetic activity, and increased chemoreceptor drive. We investigated the role of carotid chemoreceptors in cardiovascular responses induced by obstructive apnea in awake SHR. A tracheal balloon and vascular cannulas were implanted, and a week later, apneas of 15 s each were induced. the effects of apnea were more pronounced in SHR than in control rats (Wistar Kyoto; WKY). Blood pressure increased by 57 +/- 3 mmHg during apnea in SHR and by 28 +/- 3 mmHg in WKY (p < 0.05, n = 14/13). the respiratory effort increased by 53 +/- 6 mmHg in SHR and by 34 +/- 5 mmHg in WKY. the heart rate fell by 209 +/- 19 bpm in SHR and by 155 +/- 16 bpm in WKY. the carotid chemoreceptors were then inactivated by the ligation of the carotid body artery, and apneas were induced two days later. the inactivation of chemoreceptors reduced the responses to apnea and abolished the difference between SHR and controls. the apnea-induced hypertension was 11 +/- 4 mmHg in SHR and 8 +/- 4 mmHg in WKY. the respiratory effort was 15 +/- 2 mmHg in SHR and 15 +/- 2 mmHg in WKY. the heart rate fell 63 +/- 18 bpm in SHR and 52 +/- 14 bpm in WKY. Similarly, when the chemoreceptors were unloaded by the administration of 100% oxygen, the responses to apnea were reduced. in conclusion, arterial chemoreceptors contribute to the responses induced by apnea in both strains, but they are more important in SHR and account for the exaggerated responses of this strain to apnea.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de São Paulo, Escola Paulista Med, Dept Physiol, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med, Dept Physiol, São Paulo, BrazilFAPESP: 2010/19705-6CNPq: 472187/2010-4Web of Scienc

The long-term impact of engaged scholarship: How do SMEs capitalise on their engagement with academics to explore new opportunities?

We investigate whether—and how—small and medium-sized enterprises (SMEs) are able to capitalise on their engagement with academics in order to explore new opportunities beyond the achievement of the immediate objectives of their collaboration. Using empirical evidence drawn from academic-SME collaborations supported by the Knowledge Transfer Partnership programme in the UK, we find that, for many SMEs, engagement with academics has led to new business opportunities, including new market creation, new project engagement, new venture creation, and new strategic network development. The exploration of new business opportunities is facilitated when three overarching factors are present: i) a capable boundary spanner, who creates bridges within the SME and between the SME and the university, and gains an in-depth knowledge of the collaboration’s content; ii) a committed SME leadership willing to allocate resources and permissions to the collaboration, and encouraging an open flow of communication; iii) a strong relationship, characterised by trust and cognitive proximity, between the collaboration’s partners, who engage in open discussions and acknowledge and respect their different roles and responsibilities. These findings offer suggestions to SMEs, universities and policy makers in relation to improving the generation of long-term impacts on SMEs through engaged scholarship

Taxa de concepção de cabras inseminadas com sêmen caprino resfriado a 5°C, por 12 ou 24 horas, em meio diluidor à base de gema de ovo.

Avaliou-se a capacidade fecundante do sêmen caprino resfriado a 5°C, por 12 (TI) ou 24 horas (TII), em container especial. Para tanto, utilizaram-se 62 fêmeas e dois reprodutores (B1 e B2) da raça Toggenburg, distribuídos em um esquema fatorial 2x2 (dois reprodutores e dois períodos de estocagem do sêmen). Após a coleta, o sêmen foi diluído em Tris-frutose-gema de ovo a 2,5%, envasado em palhetas de 0,25mL, com 150x106 espermatozoides móveis e resfriado a 5oC. As fêmeas receberam duas doses de 22,5µg de PGF2a, em intervalos de 10 dias para a sincronização do estro. A partir da primeira aplicação de PGF2a, as fêmeas foram monitoradas para ocorrência de estro, três vezes ao dia. Realizou-se uma única inseminação, pela técnica de fixação da cérvice, 12 horas após o início do estro. A motilidade e o vigor, após 12 ou 24 horas de resfriamento, foram de 66,14±0,11% e 62,50±0,05%, e 3,46±0,61 e 3,27±0,50, respectivamente. Não houve influência (P>0,05) do reprodutor, nem do período de armazenamento do sêmen sobre a taxa de concepção das cabras, que foi de 49,1%. Conception rate of goats inseminated with semen cooled in egg yolk diluent at 5 degrees C, for 12 or 24 hours. Abstract: The fertilizing capacity of goat semen cooled in egg yolk diluent at 5 degrees C, for 12 or 24 hours was evaluated. Sixty-two Toggenburg does and two sexually mature Toggenburg bucks were used in a fatorial treatment combination (two bucks and two storage periods). The semen was diluted in 2.5% Tris-frutose-egg yolk; envased in 0.25mL plastic straws, with 150x10(6) mobile spermatozoa; and cooled at 5 degrees C for 12 or 24 hours. The females received two doses of 22.5 mu g of prostaglandine F2 alpha, at each 10-day intervals in order to synchronize the estrous. From the first PGF2 alpha injection, estrous occurrence was monitored three times per day. Only one insemination was used, using the cervix fixation method, 12 hours after the estrous onset. The means of motility and strength, 12 (TI) and 24 hours (TII) after semen cooling at 5 degrees C, were 66.14 +/- 0.11% and 62.50 +/- 0.05%, and 3.46 +/- 0.61 and 3.27 +/- 0.50, respectively. Neither the sire nor the period of semen influenced (P>0.05) the conception rate of the does, which was 49.1%