997 resultados para Miller, Marcia
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It has been studied the variability of stem radial growth in four radius orientations at the age of 25 years old trees. The species was Pinus uncinata. The sampling sites, located in the North East Spanish Pyrenees belong to different plant communities. An ANOVA analysis was performed in order to find out which factors, the radio orientation, plant community of the site and tree itself are significative or have some kind of influence on the tree radial growth.
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Pereskia aculeata Mill. (Ora-pro-nóbis) is a native cactaceae from tropical America, whose leaves have high protein content. In Brazil it is found in all territorial extension between the states of Bahia and Rio Grande do Sul. Most studies have focused on chemical characterization of the leaves of this specie. The objective was to assess the carotenoids profile and the total polyphenols present in the fruits of P. aculeate. Carotenoids were determined by HPLC-PAD (high performance liquid chromatography - photodiode array detector), total polyphenols were determined by Folin-Ciocalteu and vanillin methods. Trans-β-carotene was the main carotenoid, followed by α-carotene, lutein and other minor carotenoids. It was found 64.9 ± 1.1 mg.100g-1 of gallic acid equivalent, 14.8 ± 0.2 mg.100g-1 of catechin equivalent. Carotenoid identification of P. aculeate fruits are presented here by the first time and indicate that these fruits can be researched as source of bioactive substances, especially antioxidant and provitamin A carotenoids.
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Sequential extraction is not totally effective to dissolve distinct forms of trace elements. The extractive solution, for example, can dissolve less of the target fraction and more than another not wished fraction. The goal of this work is to compare the extraction of native iron with three sequential extraction methods of the heavy metals, using three soils with different physical chemistry characteristics: a histosol, an oxisol, and a mollisol. The results obtained in this work demonstrate that a smaller relation soil/extractor results in a larger extraction in almost all phases. The use of many stages of the sequential extraction, with the purpose of more association of the metal with different components of the soil, can result, among other things, in modification of the substratum by the action of the reagents used, besides reducing the selectivity of the more specific extractors. Readsorption and redistribution of the heavy metals could have happened with larger intensity in the fraction where hidroxilamine was used with higher temperature. Sequential extraction of iron, without enrichment of soil samples, in the respective fractions in each method, it was important to better understand the behavior of the reagents considered specific to each form of the metal in soil.
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Soitinnus: piano.
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Soitinnus: piano.
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kuv., 11 x 14 cm
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kuv., 11 x 14 cm
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kuv., 11 x 14 cm
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Soitinnus: orkesteri.
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The aim of this study was to evaluate the influence of high hydrostatic pressure (150, 250, 350, 450, and 550 MPa), applied for 5 minutes, on antioxidant capacity, total phenolic content, color, firmness, rehydration ratio, and water holding capacity of aloe vera gel stored for 60 days at 4 °C. The analyzed properties of the pressurized gel showed significant changes after the storage period. The highest value of total phenolic content was found at 550 MPa. However, a decrease in the antioxidant capacity was observed for all pressurized gel samples when compared to the control sample (p < 0.05). The smallest changes in product color were observed at pressure levels between 150 and 250 MP. The application of high hydrostatic pressure resulted in lower gel firmness, and the lowest value was found at 150 MPa (p < 0.05). On the other hand, the untreated sample showed a greater decrease in firmness, indicating that high pressure processing preserves this property. The application of high hydrostatic pressure exhibited modifications in the food matrix, which were evaluated in terms of rehydration ratio and water holding capacity.
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Acquis le 20 mars 1835 de M. Miller pour le prix de 300 francs; cf. B.n.F., département des Manuscrits, registre des acquisitions 1833-1848, n° 1779 "Cartulaire de Folquin, copie moderne page pour page et ligne pour ligne prix fixé 300 F"; — signature de E. Miller et note de la main de C. Claude qui a collationné le ms. de Boulogne avec celui de Saint-Omer (A); cf. Stein, n° 3328
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Professor J. Miller, left, of the Department of Chemistry, instructs Mr. E. Farnworth of Thorold, a second year Chemistry student and Summer Research Assistant, in the theory and practice of Nuclear Magnetic Resonance.
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John Miller (1774-1862) was a physician and politician who served in the United States Congress as a representative from New York from 1825-1827. He began his medical practice in Washington County, N.Y. in 1798. In 1801 he moved to Fabius, Onondaga County, N.Y. (now Truxton, Cortland County). He served as postmaster at Truxton from 1805-1825, a justice of the peace from 1812-1821 and in the State Assembly in 1817, 1820 and 1845. Archibald McIntire [McIntyre] (1772-1858) was a businessman and politician. He immigrated to the United States with his family and settled in New York City around 1773. He was a member of the New York State Assembly from 1798-1821 (intermittently), in the New York State Senate form 1822-1826 and was New York State Comptroller from 1806-1821.