Results 151 to 160 of about 422,474 (351)
Polímeros, 2011 Neste trabalho foram preparadas misturas de borracha natural (NR) e copolímero de estireno-butadieno (SBR) na proporção 1:1 em massa. A sequência de adição dos aditivos e a influência de cargas, como negro de fumo e mica, foram avaliadas com relação a ...
Daniel de B. Coelho +4 more
doaj
VI.—The Development of Brown Mica from Augite by Reaction with Felspathic Material [PDF]
, 1900 J. Parsons
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The Canadian Journal of Chemical Engineering, EarlyView.Abstract In solid–liquid–vapour systems, the effect of film pressure (πe$$ {\pi}_e $$) by vapour adsorbate molecules becomes significant when the solid surface energy is similar to or larger than that of the liquid. We extend Young equation applicability to estimate contact angles of pure and mixed liquids on smooth solids by including πe$$ {\pi}_e $$,
Aliakbar Roosta, Nima Rezaei
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Chemistry–Methods, EarlyView.A customized apparatus for operando plasma‐diffuse reflectance infrared Fourier transform spectroscopy is developed by modifying the dome of a commercially available Harrick reaction chamber. The designed high‐voltage electrode is mounted and attached within a cylindrical holder made of PEEK.
Dilver Peña Fuentes +8 more
wiley +1 more source
Archaeometric Analyses of Medieval Pottery from the Lower Danube Region, Romania
ChemPlusChem, EarlyView.This study is about the pottery manufacturing in the Lower Danube region during the Early Medieval period (8th–10th c. AD). Optical microscopy, Particle induced X‐ray emission, and X‐ray diffraction analyses performed on 32 representative ceramic shards excavated at Pantelimonu de Sus, Constanţa County, Romania, provide clues on the raw materials and ...
Constantin Haită +3 more
wiley +1 more source
Experiments upon the constitution of certain micas and chlorites [PDF]
, 1892 F. W. Clarke, Ε. A. Schneider
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ChemPlusChem, EarlyView.Donor–acceptor (D/A) interactions between spheroidal C60F18 and three planar polycyclic aromatic hydrocarbons (PAHs)—coronene (CORO), perylene , and pyrene—show a strong dependence on PAH size. X‐Ray diffraction reveals increasing layered stacking (either D/A/D/A or D/A/A/D/A/A).
Nicholas J. DeWeerd +9 more
wiley +1 more source
Techniques for carrying out radiative transfer calculations for the Martian atmospheric dust [PDF]
A description is given of the modification of a theory on the reflectance of particulate media so as to apply it to analysis of the infrared spectra obtained by the IRIS instrument on Mariner 9.
Aronson, J. R. +2 more
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The Depositional Record, EarlyView.A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo +1 more
wiley +1 more source