Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as the target material. The Organisation for Economic Co-...Read More
Porous polymer films with a regular arrangement of pores (see figure) with a narrow pore size distribution have recently been reported. The preparation of the films from a variety of star polystyrenes, micellar polystyrenes, and block copolymers, the mechanism of formation, and the potential applications of the materi…
The synthesis and characterization of a system for the study of molecular recognition phenomena are described. The system involves a tetraurea molecule that is capable of assembly into various associated states through hydrogen bonding. In organic solvents, the dynamic transition between a low-ordered (aggregate) stat…
Extraction of structure-factor amplitudes from a powder diffraction pattern is not a straightforward procedure. Peak overlapping and background estimation are the main obstacles to the process: they may introduce strong correlations among reflection intensities and heavy errors in their estimates. The program EXTRA is…
We present a detailed study on the effects of applied hydrostatic pressure on the magnetoresistance in doped LaMn${\mathrm{O}}_{3}$ at fixed doping level. In all cases, the application of external pressure monotonically increases the Curie temperature. This is compared with the application of "internal" pressure, whic…
This paper summarizes a study carried out on the Granada Cathedral which includes studies of indicators, factors and mechanisms of deterioration. A complete chemical and physical characterization of altered and unaltered material from the quarries and the building has been made. Eight commercial treatment products hav…
In the last years, considerable studies on the effect of phototrophic organisms (cyanobacteria, algae, lichens, mosses and vascular plants) on cultural heritage properties have been carried out. The data indicate that these organisms, instead of having an irrelevant role, actively participate in the deteriorating proc…
In this work a methodology is proposed for data processing, integrating the techniques of digital images processing and the analytical capacity of graphical referencing systems and relational databases, in relation with the monuments. The images are generated using the digital image processing and they are included in…
The work presents a study carried out to determine the bond strength reached by bricklaying mortars at 28 days. 23 different dosages were prepared using 4 cement types, 2 sand types and 4 aggregate types. The results prove the feasibility of using the mentioned method to determine bond strength. The values at 28 days…
When was silk first brought across the steppe from far China towards the European world? There is silk from the Middle Bronze Age of Uzbekistan, in Scythian burials of Siberia and among the Hallstatt grave-goods of western Europe. Teasing out the story of silk depends on identifying the textile, and distinguishing its…