Multiple Monohydroxylation Products From Rac-camphor By Marine Fungus Botryosphaeria Sp Isolated From Marine Alga Bostrychia Radicans

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)This manuscript describes the biooxidation of rac-camphor using whole cells of marine-derived fungus Botryosphaeria sp. CBMAI 1197. The main biotransformation products of this monoterpene were achieved via a hydroxylation reaction and occurred with 5 days of rac-camphor incubation. Products were identified by means of gas chromatography mass spectrometry (GC-MS) and nuclear magnetic resonance (NMR) data. The major hydroxylated products were 6-endo-hydroxycamphor, 6-exo-hydroxycamphor, 5-exo-hydroxycamphor, 5-endo-hydroxycamphor, 3-exo-hydroxycamphor and 8-hydroxycamphor. The 6-exo-hydroxycamphor was obtained through a retro-aldol reaction when 6-endo-hydroxycamphor was maintained in presence of CDCl3; this isomerization was confirmed by H-1 NMR and GC-MS data.283498504Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Diversidade genética entre acessos de maracujazeiros avaliados a partir de caracteres morfoagronômicos.

A análise conjunta de variáveis qualitativas e quantitativas tem sido apontada como uma ferramenta útil na estimativa da divergência genética entre os acessos de uma coleção de germoplasma. O presente trabalho teve como objetivo quantificar a diversidade genética entre acessos de maracujazeiros mantidos no BAG-Maracujá da Embrapa Mandioca e Fruticultura, utilizando uma lista de descritores mínimos para a cultura

Avaliação de resistência a viroses de maracujazeiro em condições controladas.

O vírus do endurecimento dos frutos, conhecido como Cowpea aphid-borne mosaic virus (CABMV), é o principal patógeno responsável pela virose do maracujazeiro (Passiflora spp.). O seu difícil controle tem feito com que a doença continue apresentando elevada incidência em pomares nos principais polos produtivos desta cultura na Bahia. Este trabalho teve como objetivo identificar fontes de resistência ao CABMV em espécies silvestres e comerciais de maracujazeiro

MAC protocol for low-power real-time wireless sensing and actuation

This paper presents LPRT, a new medium access control (MAC) protocol for wireless sensing and actuation systems. Some of the characteristics of the proposed protocol are low power consumption, support for real-time and loss intolerant traffic through contention-free operation and a retransmission scheme, flexibility, and high throughput efficiency. The LPRT protocol was implemented it in the MICAz motes, a platform for the development of wireless sensor networks. We also briefly describe a wireless hydrotherapy application that benefits from the use of the proposed protocol. This paper also provides experimental results and comparison of the proposed protocol with the CSMA/CA protocol of IEEE 802.15.4.Agência de Inovação (ADI)Fundação para a Ciência e a Tecnologia (FCT

A região semiárida brasileira.

O Semiárido brasileiro ocupa uma área de 969.589 km2 e inclui os Estados do Ceará, Rio Grande do Norte, a maior parte da Paraíba e Pernambuco, Sudeste do Piauí, Oeste de Alagoas e Sergipe, região central da Bahia e uma faixa que se estende em Minas Gerais, seguindo o Rio São Francisco, juntamente com um enclave no vale seco da região média do rio Jequitinhonha. Clima. Solos e Vegetação e aspectos socieconômicos

Managing affect in learners' questions in undergraduate science

This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2012 Society for Research into Higher Education.This article aims to position students' classroom questioning within the literature surrounding affect and its impact on learning. The article consists of two main sections. First, the act of questioning is discussed in order to highlight how affect shapes the process of questioning, and a four-part genesis to question-asking that we call CARE is described: the construction, asking, reception and evaluation of a learner's question. This work is contextualised through studies in science education and through our work with university students in undergraduate chemistry, although conducted in the firm belief that it has more general application. The second section focuses on teaching strategies to encourage and manage learners' questions, based here upon the conviction that university students in this case learn through questioning, and that an inquiry-based environment promotes better learning than a simple ‘transmission’ setting. Seven teaching strategies developed from the authors' work are described, where university teachers ‘scaffold’ learning through supporting learners' questions, and working with these to structure and organise the content and the shape of their teaching. The article concludes with a summary of the main issues, highlighting the impact of the affective dimension of learning through questioning, and a discussion of the implications for future research