Produção de Mudas, Controle das Principais Pragas e Herborização de Essências Florestais Nativas e Exóticas no sul do Estado do Rio Grande do Sul.

Produção de mudas de essências florestais nativas e exóticas no sul do Estado do Rio Grande do Sul: viveiros e manejo, planejamento e instalação, substratos, espécies nativas, produção de mudas por sementes; seleção, marcação de matrizes e coleta de sementes, espécies exóticas, produção de mudas por sementes (propagação sexuada), semeadura em canteiros, semeadura em recipientes, propagação vegetativa (multiplicação), estaquia, Alporquia, divisão das touceiras, sombreamento, adubação, irrigação, rustificação das mudas, transporte, identificação e controle das principais pragas de essências florestais; coleoptera; buprestidae, cerambycidae, crysomelidae, lepidoptera, stenomatidae, phycitidae, Noções sobre coleta e herborização de plantas: coleta; herborização.bitstream/item/107223/1/2266.pd

Composição florística de primavera e relação com a qualidade da forragem em campos naturais na Apa do Ibirapuitã, RS.

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Características do sistema radicular de espécies de campo natural sob efeito de corte da parte aérea em diferentes solos na região de Alegrete (RS).

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Repeatability and Reproducibility of Retinal Thickness Measurements With Spectral-Domain Optical Coherence Tomography Using Different Scan Parameters

PURPOSE: To evaluate repeatability (test-retest) and reproducibility of retinal thickness measurements using spectral-domain optical coherence tomography with different densities of A-scans per B-scan and different frames per B-scan for real-time averaging. METHODS: Twelve healthy subjects were analyzed by spectral-domain optical coherence tomography. Raster lines analysis with 19 B-scans over the examined area centered on the macula was performed. Images were acquired both in standard-density (768 A-scans/B-scan) and high-density (1,536 A-scans/B-scan) modalities. Moreover, images were acquired using 2 and 20 frames/B-scan for real-time averaging. Each analysis was repeated twice to test for repeatability. RESULTS: Intersession repeatability was good for all studied analysis protocols, with Lin concordance correlation coefficient values ranging between 0.88 and 1.00. Reproducibility assessment showed consistent retinal thickness measurements using variable scan density, with Bland-Altman limits of agreement of -6 \u3bcm to 6 \u3bcm in the central area. Reproducibility assessment showed consistent retinal thickness measurements using different number of frames used in the real-time averaging process, with Bland-Altman limits of agreement of -8 \u3bcm to 4 \u3bcm in the central area. CONCLUSION: Spectral-domain optical coherence tomography is a very reliable tool for central retinal thickness assessment. Changes in the number of A-scans/B-scan and in frames used for real-time averaging do not affect repeatability and reproducibility

Evolução da vegetação de um campo natural (excluído e pastejado) e autoecologia de plantas indesejáveis

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Ação dos extratos de quatro plantas sobre larvas infectantes de nematódeos gastrintestinais de ovinos.

A ação de extratos hidroalcoólicos de Eugenia uniflora L. (pitangueira), Mentha x piperita L. (hortelã), Myrcianthes pungens (O. Berg) D. Legrand (guabiju) e Peltophorum dubium (Spreng.) Taub. (canafístula) foi avaliada sobre o desenvolvimento de nematódeos gastrintestinais nas coproculturas de ovinos.201

The dark atrophy with indocyanine green angiography in Stargardt disease

PURPOSE: To evaluate differences in fluorescein angiography (FA) and indocyanine green angiography (ICGA), findings between subjects affected by Stargardt disease (STGD) and atrophic AMD. METHODS: This was a consecutive, cross-sectional case series. A total of 24 eyes of 12 patients with STGD and 23 eyes of 14 patients with atrophic AMD were enrolled in the study. Patients underwent dynamic simultaneous FA and ICGA using a dual beam confocal scanning system. Images were recorded from the initial filling of choroidal and retinal vessels throughout all the phases of the angiogram. Spectral-domain optical coherence tomography (SD-OCT) and fundus autofluorescence were also executed. FA and ICGA findings in the two groups were evaluated. RESULTS: In 92% (22/24) of eyes affected by STGD, ICGA showed hypocyanescence from the areas of atrophy, more evident in the late phases. This finding, defined as ICGA-imaged "dark atrophy," was present in only 13% (3/23) of the eyes affected by atrophic AMD. The remaining eyes in both groups showed iso- or mild hypercyanescence from the areas of atrophy. Eyes with ICGA-imaged dark atrophy, both in STGD and in atrophic AMD groups, did not show early obscuration of the choroidal vessels by FA. SD-OCT revealed morphologically intact choroid in STGD patients with ICGA-imaged dark atrophy. In atrophic AMD eyes with ICGA-imaged dark atrophy, SD-OCT revealed a severely thinned choroid. CONCLUSIONS: Hypocyanescence by ICGA from the areas of atrophy was more frequent in STGD compared with atrophic AMD. This finding, along with SD-OCT evidence of intact choroid, suggests a possible selective damage of the choriocapillaris in STGD