Претраживање
Приказ резултата 21-30 од 51
In vitro multiplication of willow gentian (Gentiana asclepiadea L.) and the production of gentiopicrine and mangiferin
(Phyton - Annales Rei Botanicae, 2006)
A protocol for in vitro propagation of Gentiana asclepiadea was developed. The best multiplication rate was obtained with woody plant medium (WPM) supplemented with 8.9 mu M BAP (6-benzylaminopurine) and 1.1 mu M IAA ...
Influence of carbohydrate source on Nepeta rtanjensis growth, morphogenesis, and nepetalactone production in vitro
(Brill Academic Publishers, Leiden, 2005)
A wide range of sucrose, fructose, and glucose levels in culture media was tested in vitro in order to determine those that provide optimum growth, morphogenesis, and the production of secondary metabolites in Nepeta ...
Photoacoustic determination of thermal and electron transport properties of single crystal NiO
(E D P Sciences, Les Ulis Cedex A, 2005)
Thermal and electron transport properties of single crystal NiO were determined using the photoacoustic technique. NiO single crystals were prepared using the Verneuil method and were easily cleaved parallel to the (100) ...
Fractal analysis of STM images of photochemical polymer of coniferyl alcohol
(R and D print, 2001)
Fractal analysis was applied to images of photochemical lignin polymer obtained using scanning tunneling microscope. We studied the polymer obtained in vitro by ionic mechanism through UV radiation - induced polymerization. ...
A phenomenological analysis of sintering kinetics of alumina
(Trans Tech Publications Ltd, Durnten-Zurich, 2004)
In this paper a phenomenological analysis of the sintering kinetics of alumina powder compacts with different proportions of small and large particles has been made. A phenomenological approach enables definition of ...
Electrical characterization of the grain-boundary region of SnO2 varistors
(Trans Tech Publications Ltd, 2006)
The effect of Co, Cr and Nb on the electrical properties of the grain boundaries of SnO2-based varistors was investigated. The powders were prepared by the method of evaporation and decomposition of solutions and suspensions. ...
Acid activation of bentonite clay in conditions of water deficiency
(Silicates Industriels, 2005)
The methods of X-ray diffraction, FTIR, electron microscopy, BET, CEC and others were used for investigation of bentonite activation with hydrochloric acid in conditions of water deficiency. It was established that during ...
Land degradation on barren hills: A case study in northeast Vietnam
(Springer, New York, 2008)
The term "barren hills" has been a keyword for land degradation in the uplands of Vietnam for over a decade. Nevertheless, the "barren" land is still not adequately ecologically characterized. In this work, we analyze land ...
Spectral sensitivity of the dogfish shark (Scyliorhinus canicula)
(Springer, Dordrecht, 2007)
The action spectrum of the electroretinographic (ERG) b-wave and the unmasked late receptor potential (LRP) were measured under a variety of conditions (isolated eyecup, detached retina, b-wave recording in fresh preparations, ...
Labile fractions of soil organic carbon in mollisols from different climatic regions
(Pisa Univ Press, Pisa, 2009)
Characterization of Labile Fractions of Soil Organic Carbon in Mollisols from different climatic regions. The research studied the potential mineralization and characterization of labile SOM of different types of Mollisols: ...