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Search Results: 1 - 10 of 256514 matches for " Carlos L.;Diniz "
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Influência governamental e estratégias institucionais na difus?o de inova??es em economias emergentes
Rodriguez, Carlos L.;Diniz, Eduardo H.;Ferrer, Florencia;
Revista de Administra??o de Empresas , 2007, DOI: 10.1590/S0034-75902007000100002
Abstract: in emerging economies, various public programs have been created to stimulate local ?rms to adopt innovations, with the ultimate goal of increasing rates of economic development. this paper provides a preliminary attempt to identify factors associated with institutional influences in the processes of innovation diffusion in those areas, and proposes some basic associations: between the governmental interventions and the phases of the process of innovation diffusion; between the actions of governments and the forces that stimulate the process; and between the public policies and the characteristics of the institutional environment generally found in emerging economies. the analysis integrates concepts from various ?elds in the social sciences to offer ?ve propositions, at different levels of analysis, describing various aspects of the potentially strong influence that national governments exert on the process through which innovations are diffused in the institutional environments of the areas known as emerging economies.
Quantification of Flavonoids in Brazilian Orange Peels and Industrial Orange Juice Processing Wastes  [PDF]
Regina M. S. Pereira, Bego?a Giménez-Cassina López, Susana N. Diniz, Alyne Alexandrino Antunes, Daniel Moreno Garcia, Carlos Rocha Oliveira, Maria Cristina Marcucci
Agricultural Sciences (AS) , 2017, DOI: 10.4236/as.2017.87048
Abstract:
The flavonoid content in orange peels of different Brazilian citrus varieties such as bahia, lima, lima-of-persian, morcote, pera, ponkan, seleta, cravo, kinkan and pomelo was assessed. Industry processing juice wastes such as bagasse, bagasse residues, animal feeding bagasse, pulp WEUE and CORE-wash were also analyzed. The HPLC analysis indicates that the most abundant flavonoids found in these Brazilian citrus peels are hesperidin and naringin. The solvents used are selective for flavonoid extraction, and depending on their polarity, glycoside or aglycone flavonoids are extracted. The use of multivariate analysis shows that DMSO is the best solvent to extract glycosides flavanones while hexane displays high selectivity in the extraction of polymethoxylated flavones. The flavonoids present in the orange wastes, obtained at different stages of the industrial processing, are qualitative and quantitatively different. The identification and quantification of the flavonoid composition in each Brazilian citrus variety were evaluated and allowed the selection of the best solvent for the extraction of each specific class of flavonoids. These compounds were found to be more abundant in the fruit peels than in their juices, revealing their great industrial potential. The residual portion of the processing juices is also rich in flavonoids, depending on the processing step.
Single-pass measurement of the optical quality of the opossum eye
Oswaldo-Cruz, Eduardo;Pican?o-Diniz, Cristovam W.;Silveira, Luiz Carlos L.;
Psychology & Neuroscience , 2011, DOI: 10.3922/j.psns.2011.1.002
Abstract: this paper reports the results that are part of a series of experiments designed to evaluate aspects of the spatial resolution of the visual system of the opossum, didelphis marsupialis aurita. this nocturnal marsupial presents a well-developed eye, displaying features that reflect specialization for operation at low levels of luminosity. the species was shown to be slightly myopic, a feature that may prove to be valuable because of the increased depth of field. opossum visual acuity has been previously evaluated by means of determining the contrast sensitivity function (csf). the results indicate rather poor visual acuity compared with other nocturnal animals. in this paper, we describe the results obtained for the optical quality of the opossum's eye using a single-pass method. the results suggest that the opossum's optical system is capable of forming images that can be resolved when separated by an angular distance on the order of 6 minutes of arc.
Single-pass measurement of the optical quality of the opossum eye
Eduardo Oswaldo-Cruz,Cristovam W. Pican?o-Diniz,Luiz Carlos L. Silveira
Psychology & Neuroscience , 2011,
Abstract: This paper reports the results that are part of a series of experiments designed to evaluate aspects of the spatial resolution of the visual system of the opossum, Didelphis marsupialis aurita. This nocturnal marsupial presents a well-developed eye, displaying features that refect specialization for operation at low levels of luminosity. The species was shown to be slightly myopic, a feature that may prove to be valuable because of the increased depth of feld. Opossum visual acuity has been previously evaluated by means of determining the Contrast Sensitivity Function (CSF). The results indicate rather poor visual acuity compared with other nocturnal animals. In this paper, we describe the results obtained for the optical quality of the opossum’s eye using a single-pass method. The results suggest that the opossum’s optical system is capable of forming images that can be resolved when separated by an angular distance on the order of 6 minutes of arc.
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes
Cristovam W. Pican?o-Diniz,Emiliana G. Rocha,Luiz Carlos L. Silveira,Guy Elston
Psychology & Neuroscience , 2011,
Abstract: n the present investigation we mapped the primary visual area of the South American diurnal rodent, Dasyprocta aguti, by standardized electrophysiological mapping techniques. In particular, we performed a series of mapping experiments of the visual streak in the primary visual cortex. We found that the representation of the visual streak in V1 is greatly expanded, the nasal 10 degrees of the visual streak representation occupies ten times more cortical area than equivalent areas in the central or temporal representation. Comparison of these data with those on the density of ganglion cells in the retina at corresponding locations in the visual feld reveal a signifcant mismatch between these two variables. The nasal representation is greatly expanded along the horizontal meridian in V1 as compared to the central and temporal regions whereas the density of ganglion cells decreases with progression along the visual streak from central region towards the nasal or temporal visual feld. A review of the available data reveals that all lateral-eyed mammals exhibit a similar mismatch between the retinal and cortical representation of the visual feld, and this mismatches is greater in those species with well defned visual streaks such as rabbit and agouti.
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes
Pican?o-Diniz, Cristovam W.;Rocha, Emiliana G.;Silveira, Luiz Carlos L.;Elston, Guy;Oswaldo-Cruz, Eduardo;
Psychology & Neuroscience , 2011, DOI: 10.3922/j.psns.2011.1.004
Abstract: in the present investigation we mapped the primary visual area of the south american diurnal rodent, dasyprocta aguti, by standardized electrophysiological mapping techniques. in particular, we performed a series of mapping experiments of the visual streak in the primary visual cortex. we found that the representation of the visual streak in v1 is greatly expanded, the nasal 10 degrees of the visual streak representation occupies ten times more cortical area than equivalent areas in the central or temporal representation. comparison of these data with those on the density of ganglion cells in the retina at corresponding locations in the visual field reveal a significant mismatch between these two variables. the nasal representation is greatly expanded along the horizontal meridian in v1 as compared to the central and temporal regions whereas the density of ganglion cells decreases with progression along the visual streak from central region towards the nasal or temporal visual field. a review of the available data reveals that all lateral-eyed mammals exhibit a similar mismatch between the retinal and cortical representation of the visual field, and this mismatches is greater in those species with well defined visual streaks such as rabbit and agouti.
Descri??o da fêmea, genitália do macho e larva de Ocyptamos sativus (Curran, 1941) (Diptera: Syrphidae)
Freitas, Carlos Diniz;
Memórias do Instituto Oswaldo Cruz , 1989, DOI: 10.1590/S0074-02761989000800041
Abstract: the female, male genital apparatus and larva of ocyptamus sativus are described. a short report of the predatory habits of this species is made.
As mudan?as nas regras da aposentadoria: os postos de trabalho est?o adaptados à popula??o que envelhece?
Silva, Carlos Alberto Diniz;
Produ??o , 1998, DOI: 10.1590/S0103-65131998000100007
Abstract: the changes observed on the rules of retirement point out the increasing of the elderly's stay on the market. this stay will only be viable if there are also changes at the work stations, making them more flexible and compatible with the characteristics of a population that ages. ergonomic analysis point out some directions of researches that can contribute to the improvement of work conditions: confections of technical and organizational provisions based on the analysis of the work how it's truly done and a politics of continuous formation that allows workers to stay actives on the actual context of technological innovations.
Reforming thought. Reformando el pensamiento. Reformando o pensamento.
Jos???? Carlos F. Diniz Gama
International Journal of High Dilution Research , 2007,
Abstract: This article discusses a proposal for a reform in thinking, grounded on Heisenberg’s principle of uncertanty, Chew’s bootstrap theory and Bohm’s principle of implicated order. By synthetizing all three grounds together, it is concluded that thought ought to be turned to the uncertainty of phenomena. Behind uncertainty lies an implicated order, which mantains the interactive pattern with onself, the others and the world.
A review of techniques for spatial modeling in geographical, conservation and landscape genetics
Diniz-Filho, José Alexandre Felizola;Nabout, Jo?o Carlos;Telles, Mariana Pires de Campos;Soares, Thannya Nascimento;Rangel, Thiago Fernando L.V.B.;
Genetics and Molecular Biology , 2009, DOI: 10.1590/S1415-47572009000200001
Abstract: most evolutionary processes occur in a spatial context and several spatial analysis techniques have been employed in an exploratory context. however, the existence of autocorrelation can also perturb significance tests when data is analyzed using standard correlation and regression techniques on modeling genetic data as a function of explanatory variables. in this case, more complex models incorporating the effects of autocorrelation must be used. here we review those models and compared their relative performances in a simple simulation, in which spatial patterns in allele frequencies were generated by a balance between random variation within populations and spatially-structured gene flow. notwithstanding the somewhat idiosyncratic behavior of the techniques evaluated, it is clear that spatial autocorrelation affects type i errors and that standard linear regression does not provide minimum variance estimators. due to its flexibility, we stress that principal coordinate of neighbor matrices (pcnm) and related eigenvector mapping techniques seem to be the best approaches to spatial regression. in general, we hope that our review of commonly used spatial regression techniques in biology and ecology may aid population geneticists towards providing better explanations for population structures dealing with more complex regression problems throughout geographic space.
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