Materials Literature
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We have utilized a T7 polymerase/promoter system for the high-level incorporation of methionine analogs with suitable labels for structural research (X-ray and NMR studies) on recombinant annexin V produced in Escherichia coli. Here, we describe, to our knowledge, the first biosynthetic high-level substitution of meth…
Hypocrellins and hypericins, structurally related plant pigments isolated from Hypocrella bambuase and Hypericum respectively, are known photodynamic agents. This review summarizes certain significant advances in the photophysics, photochemistry and photobiology of these pigments in the last 2 years and discusses thei…
The first attempt to combine luminescence spectroscopy with scanning soft x-ray microscopy has been realized in our experiment. A new imaging luminescence spectrometer with a Schwarzschild objective was designed and built with a spectral resolution of 1.3 nm in the energy range of 1.6–6.5 eV for this purpose. Some lum…
The analytical study described on this paper has been made due to the request formulated by the priest of Santiago church, D. José Mª Ballesteros, through the Provincial Delegation of Culture of Granada. In view of the degradation of the main door front, the Instituto Andaluz del Patrimonio Histórico has been asked fo…
The behaviour under different accelerated aging tests (freeze/thaw and crystallization cycles) of a new lime mortar with biocide properties destinated to monumental repair has been studied. New mortars (which have the biocide impregnated in a clay called sepiolite) have a similar behaviour to lime mortars used as a re…
The scarce references which exist in the bibliography on this subject and their vagueness on the factors which have an influence on the reduction of the strength of aluminous cement concrete due to the effect of alkalinity, have not yet allowed the limits to be clearly seen which could give rise to a situation of risk…
In the present paper, the possible relation among some petrophysical properties of five types of granitic materials, whether artificially aged or not, subject to different consolidation and/or water repellent treatments, has been studied. The study indicates a good correlation among imibition values and porosity (free…
Nafion ® was introduced into a polypyrrole (PPy) matrix, and the redox performance of the PPy/Nafion electrode was investigated in a poly(ethylene oxide) ( PEO ) ‐ LiClO 4 electrolyte. A rougher interface between polymer cathode and polymer electrolyte is usually needed for an all‐solid battery, however, the PPy/Nafio…
The crystal structure of potassium sulfate, K 2 SO 4 , was studied at five temperatures from 296 down to 15 K using an off-center four-circle diffractometer. The temperature dependence of lattice constants is well explained by the Gruneisen relation. The crystal structure is confirmed to be orthorhombic, space group P…
Abstract Liquid crystal dimers and trimers exhibit a range of unusual properties which are fascinating in their own right and which also parallel those found for semi‐flexible main‐chain liquid crystal polymers. This close similarity suggests that dimers and oligomers should form good model systems for their polymeric…