Anisotropic osmosis filtering for shadow removal in images

We present an anisotropic extension of the isotropic osmosis model that has been introduced by Weickert et al.~(Weickert, 2013) for visual computing applications, and we adapt it specifically to shadow removal applications. We show that in the integrable setting, linear anisotropic osmosis minimises an energy that involves a suitable quadratic form which models local directional structures. In our shadow removal applications we estimate the local structure via a modified tensor voting approach (Moreno, 2012) and use this information within an anisotropic diffusion inpainting that resembles edge-enhancing anisotropic diffusion inpainting (Weickert, 2006, Gali\'c, 2008). Our numerical scheme combines the nonnegativity preserving stencil of Fehrenbach and Mirebeau (Fehrenbach, 2014) with an exact time stepping based on highly accurate polynomial approximations of the matrix exponential. The resulting anisotropic model is tested on several synthetic and natural images corrupted by constant shadows. We show that it outperforms isotropic osmosis, since it does not suffer from blurring artefacts at the shadow boundaries

EP-1840: Motion artifacts in 4DCT: frequency and correlation with breathing pattern

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Compostos orgânicos voláteis no controle do crescimento in vitro de fungos causadores de podridões pós-colheita em uvas de mesa e morangos.

As podridões causadas por Botrytis cinerea e Glomerella cingulata causam grandes prejuízos pós-colheita em uva de mesa e morango. O método mais comum para o controle dessas podridões em uvas é o uso de dióxido de enxofre (SO2 ), por meio do uso de liberadores no interior das embalagens, mas pode causar manchas nas bagas e descoloração da ráquis. Compostos voláteis apresentam atividade antifúngica in vitro e podem ser potenciais fumigantes para uso em pós-colheita

Haemodialysis plastic cannulae - a possible alternative to traditional metal needles?

Background: Haemodialysis plastic cannulae for arteriovenous fistulae (AVF) have been used for many years in Japan and recently this technique was introduced in Australia. Objectives: Find answers to the following questions: What are the pros and cons of plastic cannulae versus traditional metal needles for AVF and arteriovenous graft (AVG)? Is the use of plastic cannulae instead of traditional metal needles an option for European dialysis units as well? If it is an option, for which patients should plastic cannulae be used? Methods: Literature search via PubMed and Google. Results and conclusion: Due to the characteristics of plastic cannulae, they seem to be well suited for restless patients, patients with unpredictable behaviour, children, and patients who are allergic to metal. However, the evidence base provided by studies on the use of cannulae is currently weak. More controlled ran-domised studies are needed

Manejo de pomares de macieira sob diferentes cores de tela antigranizo: avaliação da qualidade pós-colheita.

A macieira (Malus domestica) é cultivada em regiões de altitude, onde a ocorrência de granizo é elevada, o que causa grandes prejuízos aos pomares. O objetivo desse trabalho foi avaliar a qualidade de maçãs ?Fuji Suprema? produzidas sob diferentes telas antigranizo

Compostos orgânicos voláteis no controle do crescimento in vitro do fungo causador da podridão olho de boi em maçãs.

O fungo Neofabraea brasiliensis, causador da podridão pós-colheita olho de boi em maçãs, é uma das principais ameaças à qualidade pós-colheita durante o armazenamento e comercialização dessas frutas. A busca por métodos eficazes de controle desse patógeno é de extrema importância. A utilização de compostos orgânicos voláteis tem despertado interesse como uma possível abordagem para inibir o crescimento de fungos e reduzir a incidência de doenças pós-colheita em maçãs

CO2 laser and fluoride on the inhibition of root caries-an in vitro microbial model

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)An increase in the dental caries prevalence on root surfaces has been observed mainly in elderly. This research assessed, in vitro, the effectiveness of a pulsed CO2 (lambda = 10.6 mu m) laser associated or not with fluoride, in reducing human root dentine demineralization in conditions that mimic an oral high cariogenic challenge. After sterilization, root dentine specimens were randomly assigned into 6 groups (n = 30), in triplicate. The groups were Control (C), Streptococcus mutans (SM), Fluoride (F), Laser (L), Fluoride + laser (FL), and Laser + fluoride (LF). Except for the control group, all the specimens were inoculated with SM and immersed 3 times a day in a 40% sucrose bath. After a 7-day cariogenic challenge, the mineral loss and lesion depth were evaluated by transverse microradiography and fluoride in the biofilm was determined using an ion-selective electrode. Results were statistically analyzed by analysis of variance, at 5% of significance level. For groups C, SM, F, L, FL and LF, the means (standard-deviation) of mineral loss were 816.3 (552.5)(a), 3291.5 (1476.2)(c), 2508.5 (1240.5)(bc), 2916.2 (1323.7)(c), 1839.7 (815.2)(b) and 1955.0 (1001.4)(b), respectively; while lesion depths were 39.6 (22.8)(a), 103.1 (38.9)(c), 90.3 (44.6)(bc), 91.7 (27.0)(bc), 73.3 (26.6)(b), 75.1 (35.2)(b), respectively (different superscript letters indicate significant differences among groups). In conclusion, irradiation of root dentine with a pulsed CO2 laser at fluency of 12.0 J/cm(2) was able to inhibit root surface demineralization only when associated with fluoride. No synergy effect on the inhibition of root dentine mineral loss was provided by the combination of fluoride application and laser irradiation.20918381843Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq [201746/2007-7

Influência do número de perfilhos do ano na produtividade da pupunha para palmito.

Espécie nativa da Amazônia, a pupunha apresenta, como vantagem em relação às outras espécies produtoras de palmito, o perfilhamento. A partir do segundo corte do palmito, a ocorrência de perfilhamento com mais de um perfilho apto ao corte por touceira acarreta o aumento de produção e os perfilhos da touceira garantem a longevidade da plantação