Copper And Iron
Mostrando 37-48 de 317 artigos, teses e dissertações.
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37. Hourly, Daily, and Monthly Soil Temperature Fluctuations in a Drought Tolerant Crop
ABSTRACT Soil temperature is a physical property of great agricultural importance in the soil-plant relationship and in energy exchange with the atmosphere. This study was conducted in a degraded Cambissolo Háplico Ta Eutrófíco (Cambisol; Inceptisol) in the Irecê Identity Territory, Bahia, Brazil, aiming to evaluate the hourly, daily, and monthly fluctua
Rev. Bras. Ciênc. Solo. Publicado em: 22/01/2018
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38. Fungal Community Structure as an Indicator of Soil Agricultural Management Effects in the Cerrado
ABSTRACT Forest-to-agriculture conversion and soil management practices for soybean cropping are frequently performed in the Cerrado (Brazilian tropical savanna). However, the effects of these practices on the soil microbial communities are still unknown. We evaluated and compared the fungal community structure in soil from soybean cropland with soil under n
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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39. Copper Cobalt Magnetic Ceramic Materials Characterization at Terahertz Frequencies
ABSTRACT: This study presents the complex index of refraction and the complex permittivity of a magnetic ceramic material made of copper, cobalt, and iron oxides. The index of refraction and the extinction coefficient of the CuCo-ferrite exhibit an almost frequency independent behavior and were averaged to n = 3.62 ± 0.05 and k = 0.06 ± 0.02, respectively,
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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40. Mineral element and heavy metal (cadmium, lead and arsenic) levels of bee pollen in Turkey
Abstract In this study, mineral element and heavy metal levels in bee pollen produced in various regions of Turkey (20 samples) and imported bee pollen (4 samples), were determined using an Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) device. Mineral and heavy metal levels of bee pollens produced in Turkey were determined to be within t
Food Sci. Technol. Publicado em: 09/03/2017
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41. Retinol and mineral status in grazing foals during the dry season
ABSTRACT The objective of this study was to examine serum retinol and some mineral (zinc, iron, calcium, phosphorus, magnesium, and copper) levels in seven Mangalarga Marchador colts aged 329.48 days, reared on pasture in the city of Montes Claros, MG, Brazil, during the dry season. Equines were evaluated for four periods of 45 days during the total study pe
R. Bras. Zootec.. Publicado em: 2017-02
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42. Assessment of serum copper, iron and immune complexes in potentially malignant disorders and oral cancer
Abstract Potentially malignant disorders (PMDs) of oral cavity and oral cancer remain a cause of serious concern despite intensive research and development. Diet and immunity have been identified to play a crucial role as modifying factors in these diseases. Our study intended to explore this relationship by estimating and comparing the serum levels of coppe
Braz. oral res.. Publicado em: 10/10/2016
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43. Effect of Phosphorylation and Copper(II) or Iron(II) Ions Enrichment on Some Physicochemical Properties of Spelt Starch
ABSTRACT: This paper provides an assessment of the effect of saturation of spelt starch and monostarch phosphate with copper or iron ions on selected physicochemical properties of the resulting modified starches. Native and modified spelt starch samples were analyzed for selected mineral element content using Atomic Absorption Spectroscopy (AAS). Thermodynam
Braz. arch. biol. technol.. Publicado em: 27/06/2016
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44. Effect of Heavy Metals on Liver, Kidney, Gills and Muscles of Cyprinus carpio and Wallago attu inhabited in the Indus
ABSTRACT: The present study was aimed to evaluate the effect of heavy metals on an important tissue of two fish species Cyprinus carpio and Wallago attu, sampled from the Indus river, Mianwali District, Pakistan. The concentration of selected heavy metals Fe, Cr, Cu, and in gills, muscles, kidney and liver was compared with an International standard of food
Braz. arch. biol. technol.. Publicado em: 27/06/2016
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45. Essential minerals and inorganic contaminants (barium, cadmium, lithium, lead and vanadium) in dried bee pollen produced in Rio Grande do Sul State, Brazil
Abstract Like other beehive products, such as honey, royal jelly and propolis, bee pollen has attracted great interest because of the health benefits it can provide when consumed. Bee pollen has high contents of sugars and proteins and a low content of lipids, it is also a rich source of vitamins and other bioactive compounds, which makes it an attractive mi
Food Sci. Technol. Publicado em: 03/06/2016
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46. Effect of Microstructure on the Thermal Properties of Sintered Iron-copper Composites
Copper is a well know material for use as heat sink or heat exchanger. However, copper has a considerable low tensile strength and temperature limit. A material that has a good thermal conductivity, low cost, but also resistance is the desired. Effects of copper on the sintering and thermal properties of iron-copper composites produced by powder metallurgy a
Mat. Res.. Publicado em: 2015-12
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47. ESTUDO DO EFEITO DE MATRIZ NA DETERMINAÇÃO DE METAIS EM ÓLEOS BÁSICOS RERREFINADOS POR FLUORESCÊNCIA DE RAIOS X POR ENERGIA DISPERSIVA
In this article, the results of the study of the matrix effect in the determination of metals calcium, chromium, iron, nickel, copper, zinc, molybdenum, cadmium, barium and lead in base oil using Energy Dispersive X-Ray Fluorescence (EDX) are presented. Sensitivities obtained for each calibration curve were evaluated where calcium, chromium, copper, cadmi
Quím. Nova. Publicado em: 2015-06
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48. Nutritional quality and bioactive compounds of partially defatted baru almond flour
This study aimed to investigate the nutritional quality and bioactive potential of partially defatted baru (Dipteryx alataVog.) almond flour (BAF). The flour’s proximate and mineral compositions, total phenolic, tocopherols and carotenoids contents, antioxidant capacity, trypsin inhibitor and amino acid analyses were performed. An experiment was conducted
Food Sci. Technol. Publicado em: 2015-03