Results 91 to 100 of about 16,231 (179)
Chemical Composition and Biological Activities of Fragrant Mexican Copal (Bursera spp.)
Molecules, 2015 Copal is the Spanish word used to describe aromatic resins from several genera of plants. Mexican copal derives from several Bursera spp., Protium copal, some Pinus spp. (e.g., P. pseudostrobus) and a few Fabaceae spp.
Giulia Gigliarelli +3 more
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Fenologia e crescimento de almécega no Pantanal da Nhecolândia, Mato Grosso do Sul. [PDF]
, 2013 Os principais eventos fenológicos de Protium heptaphyllum estão relacionados à sazonalidade da precipitação pluviométrica. A espécie apresenta potencial para estudos dendrocronológicos devido à correlação observada do crescimento diamétrico com a ...
DOMENE, V. D. +2 more
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Precision muon lifetime and capture experiments at PSI
, 2004 The muLan experiment at the Paul Scherrer Institute will measure the lifetime of the positive muon with a precision of 1 ppm, giving a value for the Fermi coupling constant G_F at the level of 0.5 ppm. Meanwhile, by measuring the observed lifetime of the
Bernard +6 more
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Química Nova, 2000 Eight triterpenes, maniladiol, breine, ursa-9(11):12-dien-3beta-ol, oleana-9(11):12-dien-3beta-ol, 3alpha-hydroxy-tirucalla-8,24-dien-21-oic acid, 3alpha-hydroxy-tirucalla-7,24-dien-21-oic, alpha and beta amyrines were isolated as binary mixtures ...
Maia Robinson Magalhães +4 more
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, 2007 Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 287, DOI: 10.5281/zenodo ...
openaire +1 more source
Características da estrutura de uma floresta de terra firme em Porto Velho, Rondônia. [PDF]
, 2011 O objetivo deste trabalho foi estudar a estrutura de um fragmento de floresta ombrófila aberta com a finalidade de ampliar o sistema de informações sobre a tipologia florestal no estado de Rondônia.
BARROS, J. de O. +5 more
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When can a Computer Simulation act as Substitute for an Experiment? A Case-Study from Chemisty [PDF]
In this paper we investigate with a case study from chemistry under what conditions a simulation can serve as a surrogate for an experiment. The case-study concerns a simulation of H2-formation in outer space. We find that in this case the simulation can
Arnold, Eckhart, Kästner, Johannes
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PHYSICA CONDITINS OF THE ‘LIGHT’ CORE FORMATION AND THERMONUCLEAR HEAT SOURCE DEEP INSIDE THE EARTH [PDF]
, 2018 Purpose. Experimental research into the physical model of the Earth’s core formation in the center of gas‑dust spiral vortex and numerical assessment of the physical conditions associated with the development of thermonuclear reactions in the Earth’s ...
Bilan, N.V., Sobolev, V.V.
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Nuclear high-radioactive residues: a new economic solution based on the emergence of a global competitive market [PDF]
Nuclear energy is economic and does not emit CO2 but has two central setbacks. First, it has not been yet implemented an efficient method of disposing the spent fuel.
Pedro Cosme da Costa Vieira
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He jishuBackgroundSolid-polymer electrolyte (SPE) water electrolysis has been widely used to concentrate low-level environmental tritium for measurements. It has the advantages of electrolyte elimination, infinite reduction ratio, high current, safety, and ...
WANG Chenxu +8 more
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