Materials Literature
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Formation of an IPN (interpenetrating polymer network) of organic polymer and silica gel in the form of polymer hybrids was accomplished by utilizing the Diels−Alder reaction between maleimide and furan. Maleimide and furan groups were introduced in the side chain of poly(2-methyl-2-oxazoline), respectively. Polymer h…
Book Review| June 01, 2000 Functional Morphology of the Invertebrate Skeleton TOMASZ K. BAUMILLER TOMASZ K. BAUMILLER 1Department of Geological Sciences, Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109 Search for other works by this author on: GSW Google Scholar Author and Article Information TOMAS…
In this study the structural and optical properties of nanocrystalline Si/SiO2 superlattices have been investigated and discussed. Ordered planar arrays of silicon nanocrystals (Si-nc) have been formed by thermal annealing of ten period amorphous Si/SiO2 superlattices prepared by plasma enhanced chemical vapor deposit…
Huge length silica nanotubes (see Figure) can be synthesized using a surfactant-mediated sol–gel method. In this article, the method and mechanism of nanotube formation are discussed and the strategy for controlling the geometry of the tubes is illustrated. The procedure described may be applicable to the fabrication…
Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines; reluctance motors; PM motors; transformers and reactors; and special problems and applications. Debates all of these in great detail and it…
The solution synthesis of Mg(OH)2 nanorods is discussed with emphasis on the influence of experimental conditions on the morphology of the products. A templating mechanism is suggested for the formation of the nanorods that involves solvent molecules (ethylenediamine) acting as bidentate ligands to form a complex (see…
The adsorption of Xe into carbon single walled nanotubes with both closed and open ends has been investigated using temperature programmed desorption and other surface analytical tools. It has been found that opening the ends of the nanotube by chemical cutting increases both the kinetic rate and the saturation capaci…
Mixing model colloidal particles with a thermotropic nematic liquid crystal results in a soft solid with significant storage modulus (G' approximately 10(3)-10(5) Pa). The soft solid comprises a network of particle aggregates, formed by the exclusion of particles from emergent nematic domains as the mixture is cooled…
Extensive networks of oriented single-walled carbon nanotubes (SWNTs) suspended on elevated tower structures can be synthesized by the enhanced chemical vapor deposition (CVD) process described in this article (the experimental setup is shown in the Figure). It is demonstrated that high yields of continuous SWNTs with…
The optical properties of vanadium dioxide (VO2) thin film have been studied for the potential application of intelligent windows. The results show that VO2 film deposited on sapphire substrates exhibits good thermochromic effects, its IR transmittance changes 60% before and after phase transition, and has less thickn…
This paper deals with the use of crushed limestone aggregate, fine and coarse, in High Performance Concrete (H.P.C.) manufacturing. Firstly, different international research projects about this subject are presented and following, a focus on the Spanish experience is made. In addition the paper provides a list of work…
Two types of black crusts showing gypsiferous and calcareous compositions are recognized on the front-walls of the Valladolid Cathedral. On the basis of several petrophysical parameters, in particular compacity, sorption and desorption kinematics of carbonate rocks used building the cathedral, we conclude that the mos…
This experimental program has studied the behavior of fresh paste made up from cements mixed with dolomite filler. Through prior experiments the starting point is obtained for the designs 22 and 23 factorials. With these designs the governing equations are established that influence the specific surface of the filler,…
The altarpiece of the Assumption of Mary is located in the High Altar of the Pilar Basilica in Zaragoza and is one of the most important works of the Spanish Artistic Heritage. The work, sculptured in alabaster, was carried out between 1509 and 1518 by Damián Forment. The present paper covers the guidelines for the de…