Icp Aes
Mostrando 1-12 de 94 artigos, teses e dissertações.
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1. Nutrient content in ora-pro-nóbis (Pereskia aculeata Mill.): unconventional vegetable of the Brazilian Atlantic Forest
Abstract Ora-pro-nóbis (Pereskia aculeata Mill.) is an unconventional vegetable found in the Brazilian Atlantic Forest and consumed, mainly by the rural population who lives in this biome. The present study investigated the nutritional value and contribution potential this species to the recommendations of daily nutrient intake for adults. Moisture and ash
Food Sci. Technol. Publicado em: 2021-06
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2. Chemometric Optimization of the Methodology for Determination of Molybdenum in Soils and Plants by Square Wave Adsorptive Stripping Voltammetry
The method is based on the adsorptive accumulation of complex molybdenum(VI) with 8-hydroxyquinoline, using voltammetric square wave cathodic stripping voltammetry. The composition and concentration of the supporting electrolyte, frequency (Hz), amplitude (mV) and deposition time (s), were optimized by factorial design in relation to current reduction of mol
J. Braz. Chem. Soc.. Publicado em: 2020-04
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3. Palladium Nanoparticles Supported on β-cyclodextrin Functionalised Poly(amido amine)s and their Application in Suzuki-Miyaura Cross-Coupling Reactions
Herein, the synthesis, characterization and catalytic application of an organic-inorganic, palladium (Pd)-containing hybrid material, poly(amidoamine)-cyclodextrin (Pd@PAAs-CD), is reported as an efficient catalyst for Suzuki-Miyaura coupling reactions. The structure of Pd@PAAs-CD was confirmed by Fourier transform infrared spectroscopy (FTIR), transmission
J. Braz. Chem. Soc.. Publicado em: 12/08/2019
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4. Chemical characterization and bioactive compounds of an unconventional vegetable - Erechtites valerianifolia (Wolf) DC.
Abstract Erechtites valerianifolia (Wolf) DC is an unconventional vegetable found in the Brazilian Atlantic Forest. Is consumed in high proportions by the population living in this biome. The objective of this study was to investigate the general chemical composition, occurrence and content of carotenoids, vitamins (C and E) and minerals in this vegetable. B
Food Sci. Technol. Publicado em: 27/05/2019
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5. Studies of the Colloidal Properties of Superparamagnetic Iron Oxide Nanoparticles Functionalized with Platinum Complexes in Aqueous and PBS Buffer Media
This work has focused on the synthesis of three nanosystems composed of superparamagnetic iron oxide nanoparticles (SPIONs) coated either with a carboxylate platinum(IV) complex (PD = cis,cis,trans-[Pt(NH3)2Cl2(HOOCCH2CH2COO)(OH)]) or with platinum(II) complex functionalized dextrans (DexPt1 = [Pt(Dex-NH2)Cl3] and DexPt2 = [Pt(Dex-NH2)(NH3)2(H2O)]). All nano
J. Braz. Chem. Soc.. Publicado em: 2017-05
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6. Pirólise de resíduos de borrachas do setor de mineração para a produção de combustíveis: estudos em escala piloto
Resumo Neste trabalho, estudou-se em escala piloto a pirólise de três diferentes rejeitos de borracha do setor de mineração, i.e. peças de moinho de composição nominal de borracha estireno e butadieno (SBR), peneiras e correias transportadoras com composição nominal à base de borracha natural e butadieno (NR/BR) e pneus offroad de composição comp
Polímeros. Publicado em: 16/03/2017
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7. ABACAXI DO MATO (Ananas bracteatus (Lindl.), var. albus) COLHIDO EM FRAGMENTOS FLORESTAIS NA ZONA RURAL DE VIÇOSA, MINAS GERAIS: EXCELENTE FONTE DE MINERAIS E BOA FONTE DE PROTEÍNAS E VITAMINA C
RESUMO Na zona rural do município de Viçosa, Minas Gerais, encontram-se fragmentos florestais que apresentam grande diversidade de frutas silvestres e alimentícias, sendo o abacaxi do mato (Ananas bracteatus (Lindl.), var. albus) uma das frutas de maior ocorrência. Tendo em vista que pouco se conhece a respeito das características nutricionais dessa fr
Rev. Bras. Frutic.. Publicado em: 22/08/2016
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8. Ions Release and pH of Calcium Hydroxide-, Chlorhexidine- and Bioactive Glass-Based Endodontic Medicaments
Resumo Este estudo avaliou o pH e a liberação de íons cálcio, sódio e fosfato de diferentes medicamentos em dentina humana. Cinquenta pré-molares foram preparados e divididos aleatoriamente em grupos: (CHX) - clorexidina gel 2%; (CHX + CH) - CHX + hidróxido de cálcio PA; (CH) - CH + propilenoglicol 600; (NPBG) - vidro experimental nióbio fosfato bio
Braz. Dent. J.. Publicado em: 2016-06
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9. USE OF A LOW-COST TEMPLATE-FREE ZSM-5 FOR ATMOSPHERIC PETROLEUM RESIDUE PYROLYSIS
To understand the physicochemical properties and catalytic activity during the pyrolysis of atmospheric petroleum residue, a template-free ZSM-5 zeolite was synthesized using a direct method without additional seeds or an organic structure director and compared with conventionally synthesized ZSM-5. The crystallinities of the two zeolites were evaluated by X
Quím. Nova. Publicado em: 2016-04
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10. Study of the physical and physicochemical characteristics of fruits of the licuri palm (Syagrus coronata (Mart.) Becc.) found in the Atlantic Forest of Minas Gerais, Brazil
AbstractThe Atlantic Forest has species of native fruits, consumed fresh and processed, which have an important contribution to food sovereignty of families that consume it. This study examined the physical and physicochemical characteristics, proximate composition, concentration of carotenoids, vitamin C, vitamin E and minerals in the pulp and kernels of fr
Food Sci. Technol. Publicado em: 25/08/2015
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11. Decalcifying efficacy of different irrigating solutions: effect of cetrimide addition
The objective of the present study was to evaluate and compare the influence of cetrimide on decalcifying capability of different irrigating solutions. Fifteen maxillary central incisor teeth has been collected. The canals were prepared in order to obtain four samples from each root. The specimens were randomly divided into 6 experimental groups (n=10) accor
Braz. oral res.. Publicado em: 26/09/2014
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12. Catalytic dehydration of ethanol to ethylene over alkali-Treated HZSM-5 zeolites
A performance catalítica de catalisadores HZSM-5 com tratamento alcalino foi investigada em um microrreator contínuo de leito fixo. As propriedades dos catalisadores HZSM-5 de origem e modificados foram caracterizadas por difração de raio X (XRD), espectroscopia de emissão atômica com plasma indutivamente acoplado (ICP-AES), adsorção de N2 e dessorç
J. Braz. Chem. Soc.. Publicado em: 2014-08