Results 21 to 30 of about 878 (145)
Revista Brasileira de Ciência do Solo, 2000 Este trabalho objetivou investigar as principais unidades estruturais de ácidos húmicos obtidos do composto de resíduos sólidos urbano (AH-CRSU) e lodo de estação de tratamento de esgoto (AH-LETE) por meio da pirólise acoplada à cromatografia gasosa ...
L. P. Canellas +3 more
doaj +1 more source
Synthesis and Characterization of Bio-Based Polyesters: Poly(2-methyl-1,3-propylene-2,5-furanoate), Poly(isosorbide-2,5-furanoate), Poly(1,4-cyclohexanedimethylene-2,5-furanoate) [PDF]
Materials, 2017 In the present study, three new biobased furanoate polyesters with potential use in food packaging applications, named poly(isosorbide furanoate) (PIsF), poly(methyl-propylene furanoate) (PMePF) and poly(1,4-cyclohexane-dimethylene 2,5-furanoate) (PCHDMF) were synthesized.
Zoi Terzopoulou +6 more
openaire +2 more sources
Dioxins and furans in breast milk: a case study of mothers from southern Rio de Janeiro, Brazil
Cadernos de Saúde Pública, 2015 A study of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (dl-PCBs) was conducted in a pooled sample of breast milk from 27 primiparous mothers living in 12 locations in the meso-region ...
Aldo Pacheco Ferreira +1 more
doaj +1 more source
Revista de Metalurgia, 2012 La incineración de lodos de aguas residuales urbanas acarrea la formación de compuestos derivados de combustiones incompletas, incluyendo especies cloradas como dioxinas y furanos (PCDD/Fs).
E. Peña +4 more
doaj +1 more source
Nuevas rutas sintéticas de perhidrofuro[2,3-b]furanos [PDF]
, 2011 En la presente memoria se describen nuevos métodos sintéticos desarrollados para la preparación de compuestos que poseen la unidad de perhidrofuro[2,3-b]furano.
Sánchez Terrés, Daniel
core +1 more source
Metodología para el análisis y retiro de activos: transformadores de potencia
Tecnología en Marcha, 2015 El siguiente artículo consiste en el desarrollo de una metodología en el ámbito de la ingeniería de alta tensión para el análisis y retiro de transformadores de potencia reparados, fundamentado en criterios ingenieriles, a fin de establecer una ...
Gustavo Adolfo Gómez-Ramírez
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.By harnessing chalcogen bonding (ChB) catalysis, an exclusive access into a highly stereoselective strain‐release C‐glycosylation pathway was discovered. This was surprisingly not replicable by the conceptually similar halogen bonding (XB) catalysis.
Hao Guo, Charles C. J. Loh
wiley +2 more sources
Revista Brasileira de Ciências Ambientais, 2017 O descarte de resíduos de dormentes de madeira tem importância ambiental e econômica. Todavia, os estudos específicos que testam e avaliam a sustentabilidade de alternativas de sua destinação adequada praticamente são inexistentes. Este artigo avaliou os
Fábio Gorayeb Damasceno +3 more
doaj +1 more source
Host desiccation and interspecific competition limit reproductive performance of a bark beetle
Agricultural and Forest Entomology, EarlyView.At high and moderate phloem moisture levels, Polygraphus proximus reproductive success was suppressed by sympatric species density. At low phloem moisture, P. proximus reproductive success was suppressed by the low phloem moisture regardless of the Cryphalus laricis hole density. Conspecific density (i.e., attack density of P.
Mai Aochi, Etsuro Takagi
wiley +1 more source
Emissões de dioxinas e furanos por indústrias cimenteiras [PDF]
, 2012 Este trabalho tem como objetivo apresentar um panorama da emissão de dioxinas e furanos por indústrias cimenteiras e o impacto destes componentes no meio ambiente.
Caio Marcio Siqueira Bahia
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