N Lignin
Mostrando 1-12 de 112 artigos, teses e dissertações.
-
1. CELLULOSE NANOFIBERS FROM CASSAVA AGRO-INDUSTRIAL WASTE AS REINFORCEMENT IN PVA FILMS
Cellulose nanofibers (CNF) have been applied in composite systems due to the abundance of raw material, excellent mechanical and thermal properties. In this work, CNF was prepared from agroindustrial waste and used in specified amounts in polyvinyl alcohol (PVA) composites. The FTIR spectra of CNF, chemically purified cellulose (CPC) and Cassava Agro-industr
Quím. Nova. Publicado em: 2020-06
-
2. Pyrolysis of the Caupi Bean Pod (Vigna unguiculata): Characterization of Biomass and Bio-Oil
The use of agricultural residues for the production of bio-oil is an important alternative to the use of fossil fuels. In this study, the Caupi bean pod (Vigna unguiculata) was characterized and used as biomass in the production of bio-oil. This biomass was evaluated in terms of physicochemical, morphological (scanning electron microscopy (SEM)), and thermal
J. Braz. Chem. Soc.. Publicado em: 2020-06
-
3. Effect of silicon on protein and lignin contents of two annual flower species
Resumo É conhecido o efeito benéfico do silício nas plantas, porém não há trabalhos que demonstre qual o efeito deste elemento na produção de proteína e lignina em plantas ornamentais. Este trabalho teve como objetivo avaliar os efeitos da aplicação via fertirrigação de ácido monossilícico nas doses de 0, 2, 4 e 8 mmol L-1 de Si, na produção
Ornam. Hortic.. Publicado em: 28/10/2019
-
4. Shredders prefer soft and fungal-conditioned leaves, regardless of their initial chemical traits
RESUMO Nós investigamos em experimento de campo e de laboratório os efeitos das características foliares e condicionamento microbiano de duas espécies de árvores na abundância, biomassa e preferência alimentar de um fragmentador típico. No experimento de campo, comparamos a associação do Phylloicus (Calamoceratidae, Trichoptera) entre duas espécie
Iheringia, Sér. Zool.. Publicado em: 14/01/2019
-
5. Development and evaluation of prediction equations for methane emission from Nellore cattle
ABSTRACT. Dry matter intake (DMI), nutrient intake and enteric CH4 emission were evaluated in 48 Nellore cattle (392 ± 27 days of age). Equations were generated from intake data and evaluated using root mean square prediction error (RMSPE), and validated by cross-validation. Equations that included DMI and hemicellulose intake (HEMI) [ C H 4 M J d
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
-
6. Quality of sorghum silage with leucaena
ASTRACT. This study evaluated the effect of increasing levels of leucaena forage in sorghum: forage. In addition to pure sorghum, it was evaluated different levels of inclusion of leucaena (15, 30 and 50%) at the time of ensiling. Forage was ensiled in PVC tubes (100 mm diameter, 500 mm length) under the density of 500 - 600 kg m-3, a total of 20 silos were
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
-
7. Contribution of Litter and Leaf Decomposition of Byrsonima gardneriana
ABSTRACT The litter in tropical ecosystems is one of the compartments responsible for the transference of nutrients to the soil, having great importance for the conservation and maintenance of biodiversity. Thus, this study aimed to quantify the contribution and stock of litter and the leaf decomposition rate of Gardneriana byrsonima A. Juss (murici) in two
Floresta Ambient.. Publicado em: 10/12/2018
-
8. Antiherbivory defense mechanisms along an environmental gradient in restinga
ABSTRACT Plant-herbivore interactions have directed the evolution of defense mechanisms in plants, which can vary intraspecifically according to environmental quality. This study evaluated variation in the production of antiherbivory defenses in plant species distributed along an environmental gradient of restinga. The study was performed in Parque Estadual
Acta Bot. Bras.. Publicado em: 21/09/2017
-
9. Biogas production: litter from broilers receiving direct-fed microbials and an enzyme blend
ABSTRACT The effect of additives used in the feed of broilers on anaerobic bio-digestion of poultry litter was evaluated. Four diets were used: NC: negative control; DFM: NC + 500 ppm direct-fed microbials (DFM) containing Bacillus subtilis and Bacillus licheniformis; ENZ: diet formulated with an enzyme blend (20 ppm phytase, 200 ppm protease and 200 ppm xyl
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
-
10. Cover Crops Effects on Soil Chemical Properties and Onion Yield
ABSTRACT Cover crops contribute to nutrient cycling and may improve soil chemical properties and, consequently, increase crop yield. The aim of this study was to evaluate cover crop residue decomposition and nutrient release, and the effects of these plants on soil chemical properties and on onion (Allium cepa L.) yield in a no-tillage system. The experiment
Rev. Bras. Ciênc. Solo. Publicado em: 23/06/2016
-
11. Autumn Maize Intercropped with Tropical Forages: Crop Residues, Nutrient Cycling, Subsequent Soybean and Soil Quality
ABSTRACT Autumn maize intercropped with tropical forages can raise the amount of crop residues and improve nutrient cycling, favoring subsequent soybean crop. The objective of this study was to evaluate the effect of forms of implementation of intercropping of irrigated autumn maize with tropical forages on yield, decomposition, nutrient accumulation and rel
Rev. Bras. Ciênc. Solo. Publicado em: 31/05/2016
-
12. Reduced Nutrient Excretion and Environmental Microbial Load with the Addition of a Combination of Enzymes and Direct-Fed Microbials to the Diet of Broiler Chickens
Abstract This study evaluated the effects of the dietary inclusion of an enzyme blend and a direct-fed microbials in broiler diets on litter production and quality. In total, 900 Cobb 500(r) broiler chicks were distributed according to a completely randomized design into 4 treatments and 9 replicates of 25 birds each. Broilers were reared from 1 to 42 days o
Rev. Bras. Cienc. Avic.. Publicado em: 2016-03