Zobrazeno 1 - 10
of 25
pro vyhledávání: '"J. D. Pedrosa De Jesus"'
Publikováno v:
Holz als Roh- und Werkstoff. 60:303-310
) was investigated for its solubility in water or aqueous NaOH, for its stability when stored in the form of a solution in 5% NaOH, and for the physical properties and bondability of formulations prepared by incorporation of tannins into a PF resin.
Chemical characterisation of bark and of alkaline bark extracts from maritime pine grown in Portugal
Autor:
Maria H. Gil, F. C. Jorge, C. Pascoal Neto, Mark Irle, D.M. Fradinho, J. D. Pedrosa De Jesus, Dmitry V. Evtuguin
Publikováno v:
Industrial Crops and Products. 16:23-32
The chemical composition of maritime pine (Pinus pinaster) bark and of alkaline bark extracts has been investigated with bark from trees grown in Portugal. Bark is composed of lignin and polyphenolics (ca. 44%), polysaccharides (ca. 39%), dichorometh
Publikováno v:
Journal of Materials Chemistry. 10:1353-1356
The second example of a microporous framework stannosilicate with a known structure (AV-7) has been reported. The structure of AV-7, which is very similar to the structure of both the zirconosilicate mineral kostylevite and the previously reported mi
Publikováno v:
Holzforschung. 53:465-473
Summary The aim of this study was to fix chromium chemically in wood from trivalent chromium solutions. Chromium(III) nitrate, chloride and sulphate salts were applied, both in aqueous and in methanolic solutions. To improve chromium fixation metalli
Publikováno v:
Applied Catalysis A: General. 167:123-139
The catalytic effect of molybdovanadophosphate heteropolyanions (HPAs) on the delignification of wood by oxygen has been investigated. The VO2+ ions produced via the dissociation of HPA in acidic conditions are suggested to have a much stronger catal
Autor:
João Rocha, J. D. Pedrosa De Jesus
Publikováno v:
Clay Minerals. 29:287-291
Highly crystalline kaolinite has been studied by 27Al satellite transition magic angle-spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy. This technique provides an additional narrowing of the MAS spectral lines by a factor of more than th
Publikováno v:
ChemInform. 25
Publikováno v:
ChemInform. 29
Publikováno v:
ChemInform. 29
The synthesis and structural characterization of AV-1 (Aveiro microporous solid no. 1), the first synthetic microporous yttrium silicate containing stoichiometric amounts of framework sodium (and yttrium) cations, are reported. AV-1, Na4K2Y2Si16O38·
Publikováno v:
Cell biology and toxicology. 20(5)
Transport of macromolecules from the interstitial testis tissue to cells at the adlumenal compartment of the seminiferous epithelium occurs naturally through Sertoli cells. In previous studies we have shown that Cr(V) intoxication disturbed spermatog