Liderança Situacional – uma Abordagem Teórica a partir do Modelo de Hersey e Blanchard

Este trabalho tem por objetivo trazer algumas concepções acerca do exercício da liderança situacional e de suas contribuições nas tomadas de decisão dentro das organizações, levando-se em conta a análise que o líder faz do perfil de cada colaborador e de sua equipe, em função do grau de maturidade de cada um deles, e as diversas situações enfrentadas nesse ambiente. Para isso foi realizada uma pesquisa bibliográfica dos principais autores da área e um enfoque no modelo de liderança situacional de Hersey e Blanchard. As reflexões e conclusões que se amparam nesse material teórico apontam para a necessidade de líderes cada vez mais eficazes, flexíveis e dinâmicos diante de tamanha volatilidade no mundo moderno, o que é fundamental para que as organizações continuem sobrevivendo e mantenham a competitividade em meio às situações apresentadas. A Liderança Situacional salienta a necessidade de os líderes adaptarem seus perfis de liderança para atuações cada vez mais eficazes aos distintos cenários no ambiente organizacional

An assay for secologanin in plant tissues based on enzymatic conversion into strictosidine

The secoiridoid glucoside secologanin is the terpenoid building block in the biosynthesis of terpenoid indole alkaloids. A method for its determination in plant tissues and in cell suspension cultures has been developed. This assay is based on the condensation of secologanin with tryptamine, yielding strictosidine, in a reaction catalysed by the enzyme strictosidine synthase (STR; E.C. 4.3.3.2). Subsequently, the formation of strictosidine is quantified by high performance liquid chromatography (HPLC). STR was isolated from transgenic Nicotiana tabacum cells expressing a cDNA-derived gene coding for STR from Catharanthus roseus. The high specificity of STR for secologanin, in combination with a sensitive and selective HPLC system, allows a simple extraction of secologanin from plant tissue. The detection limit of this method is 15 ng secologanin. Using this assay, secologanin contents were determined in tissues of various plant species; Lonicera xylosteum hairy roots were found to contain 1% of secologanin on a dry weight basis. # 1998 John Wiley & Sons, Ltd.info:eu-repo/semantics/publishedVersio

O professor de línguas e a lingüística aplicada

This paper discusses the work of the applied linguist. Este estudo discute o trabalho do lingüista aplicado

Polymeric Biocomposites from Renewable and Sustainable Natural Resources

The use of polymeric composite materials from renewable biomass hasacquired great importance in different and varied fields. Moreover, its applicationin the biomedical applications has found a fast development in recent years. In thiscontext, this chapter is focused on the use of biocomposites in tissue engineeringand analytical applications. The studied materials include polysaccharides such aschitosan, cellulose, and alginate, as well as polyhydroxyalcanoates as matrixes, andfillers like nanoparticles, carbon nanotubes or polymers, among other combinations.Fil: Fidalgo, Daniela Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; ArgentinaFil: Contin, Mario Daniel. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Kolender, Adriana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; ArgentinaFil: D'accorso, Norma Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentin

A NOVEL EPIPHYTIC CYANOBACTERIAL SPECIES FROM THE GENUS BRASILONEMA CAUSING DAMAGE TO EUCALYPTUS LEAVES

A cyanobacterial mat colonizing the leaves of Eucalyptus grandis was determined to be responsible for serious damage affecting the growth and development of whole plants under the clonal hybrid nursery conditions. The dominant cyanobacterial species was isolated in BG-11 medium lacking a source of combined nitrogen and identified by cell morphology characters and molecular phylogenetic analysis (16S rRNA gene and cpcBA-IGS sequences). The isolated strain represents a novel species of the genus Brasilonema and is designated Brasilonema octagenarum strain UFV-E1. Thin sections of E. grandis leaves analyzed by light and electron microscopy showed that the B. octagenarum UFV-E1 filaments penetrate into the leaf mesophyll. The depth of infection and the mechanism by which the cyanobacterium invades leaf tissue were not determined. A major consequence of colonization by this cyanobacterium is a reduction in photosynthesis in the host since the cyanobacterial mats decrease the amount of light incident on leaf surfaces. Moreover, the cyanobacteria also interfere with stomatal gas exchange, decreasing CO2 assimilation. To our knowledge, this is the first report of an epiphytic cyanobacterial species causing damage to E. grandis leaves.Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)[CRA/2004]Federal University of Vicosa (UFV)CNPqCAPESFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2005/56303-5]CNPq (National Council for Scientific and Technological Development)[140327/2004-5

An assay for secologanin in plant tissues based on enzymatic conversion into strictosidine

The secoiridoid glucoside secologanin is the terpenoid building block in the biosynthesis of terpenoid indole alkaloids. A method for its determination in plant tissues and in cell suspension cultures has been developed. This assay is based on the condensation of secologanin with tryptamine, yielding strictosidine, in a reaction catalysed by the enzyme strictosidine synthase (STR; E.C. 4.3.3.2). Subsequently, the formation of strictosidine is quantified by high performance liquid chromatography (HPLC). STR was isolated from transgenic Nicotiana tabacum cells expressing a cDNA-derived gene coding for STR from Catharanthus roseus. The high specificity of STR for secologanin, in combination with a sensitive and selective HPLC system, allows a simple extraction of secologanin from plant tissue. The detection limit of this method is 15 ng secologanin. Using this assay, secologanin contents were determined in tissues of various plant species; Lonicera xylosteum hairy roots were found to contain 1% of secologanin on a dry weight basis. # 1998 John Wiley & Sons, Ltd.info:eu-repo/semantics/publishedVersio