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Mostrando 1-12 de 1520 artigos, teses e dissertações.
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1. Comparison of 15N isotope methods to determine the recovery efficiency of nitrogen from green manure
Resumo: O objetivo deste trabalho foi avaliar três métodos isotópicos de aplicação de 15N ao solo para determinar a eficiência de recuperação do nitrogênio derivado da adubação verde pelo milho (Zea mays). Utilizou-se o delineamento experimental de blocos ao acaso, com seis repetições. Os tratamentos consistiram de três métodos isotópicos de
Pesq. agropec. bras.. Publicado em: 21/10/2019
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2. Phosphorus acquisition by wheat from organic and inorganic sources labelled with 32P and 33P radioisotopes
ABSTRACT: Investment in soil phosphorus (P) capital in the tropics is often constrained by poor availability of mineral fertiliser to small-scale farmers. Consequently, new sustainable agricultural cropping strategies are required to maintain fertility and maximise crop yields. The co-application of Tithonia diversifolia (Tithonia) green manure and mineral f
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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3. Blueberry pomace, valorization of an industry by-product source of fibre with antioxidant capacity
Abstract The industrial by-product of blueberry juice, a source of fibre with antioxidant capacity was used to develop cookies. Once dried and ground the blueberries by-product, its composition and functional properties were analyzed and used to develop fibre enriched cookies. A central composite design was used to optimize the cookie formulation maximizing
Food Sci. Technol. Publicado em: 06/06/2019
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4. Scedosporium apiospermum, Scedosporium aurantiacum, Scedosporium minutisporum and Lomentospora prolificans: a comparative study of surface molecules produced by conidial and germinated conidial cells
BACKGROUND Scedosporium/Lomentospora species are opportunistic mould pathogens, presenting notable antifungal resistance. OBJECTIVES/METHODS We analysed the conidia and germinated conidia of S. apiospermum (Sap), S. aurantiacum (Sau), S. minutisporum (Smi) and L. prolificans (Lpr) by scanning electron microscopy and exposition of surface molecules by fluor
Mem. Inst. Oswaldo Cruz. Publicado em: 18/06/2018
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5. Reactive oxygen species generation mediated by NADPH oxidase and PI3K/Akt pathways contribute to invasion of Streptococcus agalactiae in human endothelial cells
BACKGROUND Streptococcus agalactiae can causes sepsis, pneumonia, and meningitis in neonates, the elderly, and immunocompromised patients. Although the virulence properties of S. agalactiae have been partially elucidated, the molecular mechanisms related to reactive oxygen species (ROS) generation in infected human endothelial cells need further investigati
Mem. Inst. Oswaldo Cruz. Publicado em: 05/04/2018
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6. Preliminary assessment of neck circumference in benign prostatic hyperplasia in patients with metabolic syndrome
ABSTRACT Objectives To investigate the impact of neck circumference (NC) in the treatment of bening prostatic hyperplasia (BPH) patients with metabolic syndrome (MtS). Additionally, we determined dose response to alpha-blockers and cut-off values for NC and waist circumference (WC), in these patients. Materials and Methods Non-randomized, open-labelled, an
Int. braz j urol.. Publicado em: 2017-02
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7. Water interaction and bond strength to dentin of dye-labelled adhesive as a function of the addition of rhodamine B
ABSTRACT Objective This study investigated the effect of the fluorescent dye rhodamine B (RB) for interfacial micromorphology analysis of dental composite restorations on water sorption/solubility (WS/WSL) and microtensile bond strength to dentin (µTBS) of a 3-step total etch and a 2-step self-etch adhesive system. Material and Methods The adhesives Adp
J. Appl. Oral Sci.. Publicado em: 2016-08
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8. Isolation and expression of two polyketide synthase genes from Trichoderma harzianum 88 during mycoparasitism
Abstract Metabolites of mycoparasitic fungal species such as Trichoderma harzianum 88 have important biological roles. In this study, two new ketoacyl synthase (KS) fragments were isolated from cultured Trichoderma harzianum 88 mycelia using degenerate primers and analysed using a phylogenetic tree. The gene fragments were determined to be present as single
Braz. J. Microbiol.. Publicado em: 2016-06
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9. Scintigraphic imaging with technetium-99M-labelled ceftizoxime is a reliable technique for the diagnosis of deep sternal wound infection in rats
PURPOSE:To evaluate whether scintigraphy with technetium-99m-labeled ceftizoxime (99mTc-CFT) can differentiate mediastinitis from aseptic inflammation associated with sternotomy.METHODS:Twenty female Wistar rats were randomly distributed into four groups: S (control) -partial upper median sternotomy with no treatment; SW (control) - sternotomy and treatment
Acta Cir. Bras.. Publicado em: 2015-09
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10. Synthesis Optimization of MCM-41 for CO2 Adsorption Using Simplex-centroid Design
There is a growing concern on the relationship between anthropogenic carbon dioxide and climate changes. A promising approach is the adsorption technology using mesoporous MCM-41 materials that can be easily synthesized to depict structures adequate to the flow of gas. The aim of this study was to improve the synthesis of MCM-41 using cationic surfactant mix
Mat. Res.. Publicado em: 2015-08
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11. Mechanisms of growth inhibition of Phytomonas serpens by the alkaloids tomatine and tomatidine
Phytomonas serpens are flagellates in the family Trypanosomatidae that parasitise the tomato plant (Solanum lycopersicum L.), which results in fruits with low commercial value. The tomato glycoalkaloid tomatine and its aglycone tomatidine inhibit the growth of P. serpens in axenic cultures. Tomatine, like many other saponins, induces permeabilisation of the
Mem. Inst. Oswaldo Cruz. Publicado em: 13/02/2015
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12. Composition of pectic polysaccharides in a Portuguese apple (Malus domestica Borkh. cv Bravo de Esmolfe)
Malus domestica Borkh. cv Bravo de Esmolfe is a typical Portuguese apple cultivar classified as Protected Designation and Origin (PDO). It is a traditional product produced under strict conditions and labelled with a specific law protected designation. This cultivar presents quite good sweetness and flavor. The monosaccharide composition of the pectic polysa
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08