The work of painters from the twelfth fifteenth centuries is often discussed in the context of a short treatise on painting materials and methods written by an artist, Cennino Cennini, around 1390. His manual guides us to knowledge of how artists worked, but this very useful text tends to constrain our understanding of the potential richness and diversity of materials available to artists. Micr...

El presente trabajo de climatología histórica pretende aportar los resultados obtenidos para España en fuentes documentales y bibliográficas el siglo XIV. La crisis bajomedieval muestra una vertiente climática a pesar disponibilidad precaria información por contexto histórico la Península Ibérica falta instituciones administrativas con capacidad generar grandes series documentales.
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Learning motivation, self-handicapping, executive function, and school achievement are interrelated variables affecting students’ intension of learning in higher education. However, many educators unaware the ability these predictive fail to encourage further Therefore, with aim helping educators, this study was conducted predict intention education based on their achievement, mothers’ We sampl...

The sol–gel technique is a highly flexible technique for fabrication of oxide glasses, and various researchers have previously reported fluorescence studies of Er-doped sol–gel films and monoliths. Here we report the fabrication of Er-doped strip-loaded sol–gel silicate waveguides, using a silica–titania–alumina host composition, and Er concentrations up to f1.1=10 Er rcm, for possible applicat...

The mechanical properties and microstructures of β Ti-25%Nb-11%Sn ternary alloy rods were investigated for biomedical applications as a function of heat treatment temperature after swaging by an 86% reduction in cross-section area. An as-swaged rod consisting of a β (bcc) single phase shows a low Young's modulus of 53 GPa, which is interpreted in terms of both the metastable composition of the ...

We describe the synthesis of mesoporous silica fibers and discoids using disodium trioxosilicate (Na2SiO3 9H2O), a convenient silica source with cetyltrimethylmmonium chloride (CTAC) as a structure directing agent under acidic condition. The molar composition of the synthesis sol is 1Na2SiO3 9H2O:1.5CTAC:28HCl:729H2O. The fibers and discoids, both p6mm, hexagonal, are obtained at room temperatu...

A plasma source was developed at UCLA for planned underdense plasma lens experiments, where the plasma density is less than the electron beam density. The argon plasma, produced by a discharge between a LaB6 cathode at 1330 C and a tantalum anode, is con ned by a solenoidal magnetic eld and ows transversely across the electron beam path. Extensive test of the plasma source is under way for vari...

1. Pudukadan D, Thappa DM. Adverse cutaneous drug reactions: Clinical patterns and causative agents in a tertiary care center in South India. Indian J Dermatol Venereol Leprol 2004;70:20– 4. 2. Shear NH, Knowles SR, Sullivan JR, Shapiro L. Cutaneous reactions to drugs. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz SI, et al, editors. Fitzpatrick‘s Dermatology in general med...

Dust grain properties were investigated in two very different Galactic environments: the interstellar medium and an exoplanetary system. Two sounding rocket missions were developed to study these regions. Wide-field observations of the Orion OB stellar association were performed in the far-ultraviolet using the Spectrograph for Photometric Imaging with Numeric Reconstruction (SPINR) sounding ro...