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Mostrando 37-48 de 629 artigos, teses e dissertações.
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37. Rapid assessment of chemical compounds from Phyllogorgia dilatata using Raman spectroscopy
Abstract The gorgonian Phyllogorgia dilatata is endemic to the Brazilian coast which is listed as threatened with extinction. This species is known to produce sterols, mono- to tetra-terpenes, conjugated polyenals and peptides. The main objective of this study is to present an alternative method for identification of different classes of compounds based upon
Rev. bras. farmacogn.. Publicado em: 2015-12
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38. Endophytic bacteria affect sugarcane physiology without changing plant growth
ABSTRACT The aim of this study was to evaluate if endophytic bacteria inoculants would be beneficial to the sugarcane varieties IACSP94-2094 and IACSP95-5000, promoting changes in photosynthesis and plant growth. The plants, obtained from mini stalks with one bud, were treated with two bacteria mixtures (inoculum I or II) or did not receive any inoculum (con
Bragantia. Publicado em: 24/11/2015
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39. Periodontal status of Pakistani orthodontic patients
The objective of this study was to evaluate and compare the periodontal status of orthodontic patients and non-orthodontic patients, aged 15–28 years, of both genders. The cross-sectional study included 100 orthodontic and 100 non-orthodontic patients evaluated using a Community Periodontal Index for Treatment Need (CPITN) probe on the index teeth. A quest
Braz. oral res.. Publicado em: 07/07/2015
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40. Mechanical performance of concrete with incorporation of coarse waste from the marble industry
The waste resulting from marble extraction process is usually disposed of in landfills or dumps and its accumulation is causing serious environmental and landscaping problems. One way of reusing marble waste is to consider its incorporation in structural concrete as a non-primary aggregate. This research work attempts to alleviate the situation and provide i
Mat. Res.. Publicado em: 30/09/2014
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41. Duodenal jejunal bypass attenuates non-alcoholic fatty liver disease in western diet-obese rats
PURPOSE:To evaluate the effects of duodenal-jejunal bypass (DJB) on serum and hepatic profiles of obese rats fed on a western diet (WD).METHODS: Twenty eight male Wistar rats were fed a standard rodent chow diet (CTL group) or WD ad libitum. After 10 weeks, WD rats were submitted to sham (WD SHAM) or duodenal-jejunal bypass (WD DJB). Body weight, fat pad dep
Acta Cir. Bras.. Publicado em: 2014-09
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42. Soil phosphorus dynamics as affected by Congo grass and P fertilizer
Some plant species can change soil phosphorus (P) availability and this may be an important tool in managing tropical high fixing phosphorus soils. An experiment was conducted to evaluate phosphorus transformations in the soil and phosphatase activity during periods of Congo grass (Brachiaria ruziziensis, Germain et Evrard) growth in two tropical soils recei
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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43. Plant densities and modulation of symbiotic nitrogen fixation in soybean
Soybean nitrogen (N) demands can be supplied to a large extent via biological nitrogen fixation, but the mechanisms of source/sink regulating photosynthesis/nitrogen fixation in high yielding cultivars and current crop management arrangements need to be investigated. We investigated the modulation of symbiotic nitrogen fixation in soybean [Glycine max (L.) M
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-06
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44. The effect of fluoride toothpaste on root dentine demineralization progression: a pilot study
The anticaries effect of fluoride (F) toothpaste containing 1100 µg F/g in reducing enamel demineralization is well established, but its effect on dentine has not been extensively studied. Furthermore, it has been shown that toothpaste containing a high F concentration is necessary to remineralize root dentine lesions, suggesting that a 1100 µg F/g concent
Braz. oral res.. Publicado em: 12/02/2014
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45. Enhanced salt tolerance in maize plants induced by H2O2 leaf spraying is associated with improved gas exchange rather than with non-enzymatic antioxidant system
Hydrogen peroxide (H2O2) is an essential signaling molecule that mediates plant responses against several biotic and abiotic stresses. H2O2 pretreatment has emerged as a signaling way, inducing salt stress acclimation in plants. Here, we analyzed the effects of H2O2 leaf pretreatment on the non-enzymatic defense system (ascorbate and glutathione), plant grow
Theor. Exp. Plant Physiol.. Publicado em: 2013-12
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46. The shift from low to high non-structural protein 1 expression in rotavirus-infected MA-104 cells
A hallmark of group/species A rotavirus (RVA) replication in MA-104 cells is the logarithmic increase in viral mRNAs that occurs four-12 h post-infection. Viral protein synthesis typically lags closely behind mRNA synthesis but continues after mRNA levels plateau. However, RVA non-structural protein 1 (NSP1) is present at very low levels throughout viral rep
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-06
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47. Long term evaluation of morphometric and ultrastructural changes of testes of alloxan-induced diabetic rats
PURPOSE: To evaluate in a long term the morphometric and ultrastructural changes in seminiferous tubules (ST) of normal and diabetic rats, and to correlate any changes with animal age and diabetes duration. METHODS: Sixty male Wistar rats, three months-old, were randomly divided into two groups: 30 non-diabetic controls (N) and 30 alloxan untreated diabetic
Acta Cir. Bras.. Publicado em: 2013-04
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48. Changes in the accumulation of shikimic acid in mycorrhized Capsicum annuum L. grown with application of glyphosate and phosphorus
When glyphosate is added to the soil, it is absorbed by roots and transported by xylem causing growth inhibition in plants. Mycorrhiza is the beneficial association between roots of most plants and soil fungi. The methylphosphonic group of the glyphosate could compete with inorganic phosphates for sorption sites in the soil. The aim of this work was to study
Theor. Exp. Plant Physiol.. Publicado em: 2013